kenwood - th-k4 service manual · th-k4at/k4e 2 disassembly for repair how to remove the case...
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430MHz FM TRANSCEIVER
TH-K4AT/K4E© 2003-9 PRINTED IN JAPANB51-8660-00 (S) 497
SERVICE MANUAL
DISASSEMBLY FOR REPAIR ................................... 2
CIRCUIT DESCRIPTION ............................................ 6
SEMICONDUCTOR DATA ...................................... 14
COMPONENTS DESCRIPTION .............................. 15
PARTS LIST ............................................................. 17
EXPLODED VIEW.................................................... 23
PACKING ................................................................. 25
ADJUSTMENT ........................................................ 27
TERMINAL FUNCTION ........................................... 43
PC BOARD
TX-RX UNIT (X57-675X-XX) (A/3) ................... 44
TX-RX UNIT (X57-675X-XX) (B/3),(C/3) .......... 48
CONTENTSSCHEMATIC DIAGRAM.......................................... 50
LEVEL DIAGRAM .................................................... 55
BLOCK DIAGRAM ................................................... 56
BC-21 (WALL CHARGER) ....................................... 58
PB-43N (Ni-MH BATTERY PACK) .......................... 58
BT-14 (BATTERY CASE) ......................................... 59
PG-4Y (PROGRAMMING INTERFACE CABLE) ..... 59
MCP-1A (MEMORY CONTROL PROGRAM) ......... 59
SPECIFICATIONS ................................. BACK COVER
Knob (ENC)(K29-5159-03)
Knob (VOL)(K29-5150-03)
Cabinet assy(16key)(A02-3822-23)
Helical Antenna(T90-1019-25)
Key top (16key)(K29-9272-02)
Front glass(B10-2746-03)Knob
(PTT/LAMP/MON)(K29-9274-03)
Knob (ENC)(K29-5159-03)
Knob (VOL)(K29-5150-03)
Cabinet assy(4key)(A02-3823-23)
Helical Antenna(T90-1019-25)
Key top (4key)(K29-9276-02)
Front glass(B10-2746-03)Knob
(PTT/LAMP/MON)(K29-9274-03)
TH-K4AT TH-K4E
Cap(SP/MIC/DC IN)(B09-0675-03)
Cap(SP/MIC/DC IN)(B09-0675-03)
TH-K4AT/K4E
2
DISASSEMBLY FOR REPAIR
How to remove the case assembly from the
chassis1. Remove two screws (z) holding the chassis.2. Pull out two knobs (x) and remove two round nuts (c).3. Pull out the SP and MIC parts of the cap from jacks (v).4. Turn the unit over with the bottom of the chassis facing
upwards, and remove the chassis (n) from the caseassembly (b).
5. Remove the speaker lead (m) from the connector (CN2) ofthe TX-RX PC board (TX-RX unit A/3).
How to remove the PC board
Numeric key PC board (TX-RX unit B/3)
1. Remove three screws (,) on the numeric key PC board.2. Lift the numeric key PC board and remove it from the
connector (CN9) of the TX-RX PC board (.).
PTT PC board (TX-RX unit C/3)
3. Remove one screw on the PTT PC board (/).4. Pull the PTT PC board to the left and remove it from the
connector (CN6) of the TX-RX PC board (TX-RX unit A/3)(Ω).
TX-RX PC board (TX-RX unit A/3)
5. Remove the SP/MIC jack cover (≈).6. Remove two screws (ç) holding the shield
cover (antenna terminal section).7. Remove two screws (√) holding the shield
cover (final amplifier section).8. Remove eight screws (∫) on the TX-RX PC
board.9. Absorb solder from the antenna terminal (~)
with a solder absorber.Note: Do not melt the shadow plate (µ) when
moving the tip of the solder absorber closeto the antenna terminal.
10. Remove the TX-RX PC board from the chassis, then removethe encoder volume FPC (≤) from the flat cable connectorof the TX-RX PC board.
CN2
CN9
CN6
x
x
c
c
v
mb
,
,
.
ç
√
µ ∫∫
∫
∫∫Ω
/
∫
≈
~
≤
n
z
TX-RX unit (B/3)
TX-RX unit (C/3)
TX-RX unit (A/3)
TH-K4AT/K4E
3
DISASSEMBLY FOR REPAIR
Soldering the antenna terminal
1. With the shield cover removed from the antenna terminalsection, install two screws on the PC board and bring thePC board into contact with the chassis (z).
2. Solder the antenna terminal with a soldering iron (x).
3. Remove the two screws installed in step 1 above, and installthe two screws again on the PC board together with theshield cover (c).
Replacing the final FET (Q12)
1. Remove the two screws holding the shield cover of thefinal FET section (z).
2. Remove solder from the shield cover completely with asolder absorber.
3. Remove the shield cover (x).
z
x
c
z
x
4. Apply the tips of soldering irons to all the four pins of the finalFET at the same time (c), heat them sufficiently, and removethe final FET (v). (Two persons should be required to do this.)
5. Remove all PC boards from the chassis.6. Confirm that there is no space between the radiation plate
installed on the foil side of the TX-RX PC board (TX-RX unitA/3) and the PC board (b). If there is any space betweenthe radiation plate and PC board, eliminate it by applyingthe tip of the soldering iron to the radiation plate.
7. Apply the tip of the soldering iron to the installation side of theradiation plate of the TX-RX PC board, put a little amount ofsolder to the radiation plate that is seen through a square holein the final FET installation section and melt the solder (n).
8. When the solder in step 7 is melted, place the final FET onthe PC board by aligning it with the silk of the final FETinstallation section of the PC board (m).
9. Release the soldering iron and confirm that the final FETand radiation plate have been soldered.
10. Solder the four pins of the final FET with the soldering iron.11. Install all the PC boards.12. Reinstall the shield cover removed in step 3 above in its
original position and install two screws.13. Solder the shield cover to the PC board.14. Install the chassis on the case assembly and assemble them.15. Readjust transmission power.Note: Since the FET is sensitive to static electricity, always
wear a grounding band. Use a highly insulated ceramicheater solder iron.
Radiation plate
TX-RX PC board
b
cv
m
n
This illustration isM2 type.
TH-K4AT/K4E
4
Special care and attention required for assembly1. Gluing to the key top (MIC element section)
You must also glue on the speaker storage area and heapthe glue up until wealthy glued on the speaker storage areaand the key top for waterproofing the MIC element side ofthe key top. (Fig. 1)
Fig. 1
2. Bending the LCD hardware fixture (J21-8456-03) tabs
(1) Insert the tabs of the LCD hardware fixture into four holesin the LCD installing position of the TX-RX PCB (TX-RX unitA/3). (Fig. 2)
Heap the glue up until wealthy glued on the speakerstorage area and the key top (MIC element section).
Fig. 2
(2)By pressing the LCD hardware fixture from the componentside of the TX-RX PCB, you must bent all 4 tabs of the LCDhardware fixture being visible from the foil side until thebases of each tabs are folded at least 45 degrees (Fig. 3). Ifthe bending angle of the tabs of the LCD hardware fixtureis less than 45 degrees, a display error may occur.
Bending position
NG
NG
Min 45degrees
3. PTT PCB (TX-RX unit C/3) installation procedure
Installing the PTT PCB on the TX-RX PCB and chassis areas follows:(1) Insert the PTT PCB connector (CN7) into the TX-RX PCB
connector (CN6) lightly.(2)Push three parts of the PTT PCB to contact tightly with the
chassis. There may be a small gap between the connectors.(Fig. 4)
Note: A double-side adhesive tape (J99-0376-04) is usedbehind the PTT switch. When reassembling the PTTPCB to the chassis, press the PTT PCB (under the PTTswitch) so that the tape hold the PCB and chassissecurely.
Fig. 3
CN6Chassis
PTT switch
PTT PCB (C/3)
OK A bitclearance
Noclearance
NGCN6
CN7
CN7
ChassisPTT PCB (C/3)
PTT switch
Fig. 4
Push three parts of the PTT PCBto contact tightly with the chassis.
(3)Tighten one screw in the PTT PCB.
DISASSEMBLY FOR REPAIR
TH-K4AT/K4E
5
DISASSEMBLY FOR REPAIR
4. Packing (G53-1572-02) TX/BUSY lamp installation
procedure
(1)To assure waterproofing, install the packing in the chassisgroove as shown in Fig. 5. (z)
(2) Install the packing TX/BUSY lamp section on the chassis.(x)
z
x
OKPacking
NGPacking
Chassis
Chassis
5. Packing (G53-1572-02) bottom installation procedure
(1)Before installing the numeric key PCB (TX-RX unit B/3) onthe chassis, push three parts of the packing to contact tightlywith the chassis as shown in Fig. 6. If the packing is not incontact with the chassis, there may be a gap between thetransceiver bottom case assembly and the battery, andwater may enter through the gap.
Fig. 5
OK NG
Push three parts of the packing tocontact tightly with the chassis.
Clearance NG
Fig. 6
6. Cautions for installing the chassis on the case assembly
(1)Verify that the packing (G53-1572-02) TX/BUSY lamp sectionis has been past through the hole in the illumination guidesection on the top of the case assembly. (Fig. 7)
LAMP
LOW
PTT
Fig. 7
(2)Align the speaker lead as shown fig.8. Do not place theleads over the key top section, LCD section or SP/MIC/DCIN cap section.
Do not fix this part of thekey top to the rib of thecase assembly.
7. Cautions for installing the key top on the case assembly
(1) Install the key top keypad section and the power switchsection on the rib of the case assembly.
(2)Do not fix the part between the key top keypad section andthe power switch section to the rib of the case assembly,but install it as shown in Fig. 8.
The packing TX/BUSY lamp section is hasbeen past through the hole in the illuminationguide section on the top of the case assembly.
Fig. 8
TH-K4AT/K4E
6
CIRCUIT DESCRIPTION
Frequency Configuration
The frequency configuration is shown in Figure 1 andTable 1.
Fig. 1 Frequency configuration
361.150~431.145MHz(M2)391.150~401.145MHz(E)
400.000~469.995MHz(M2)430.000~439.995MHz(E)
400.000~469.995MHz(M2)430.000~439.995MHz(E)
TX/RX :
ANTSW
MCF
38.85MHz38.4MHz
12.8MHz
450kHzCF
MIX, IF,DET
AFAMP
SP
PREDRIVE
FINALTCXO
DRIVE
Triplerx 3
RFAMP
1st MIX
PLLVCO
MICAMP
MIC
ANT
Receiver System
Front End
The received signal from the antenna passes through a low-pass filter and then through a transmission/reception switchingcircuit (antenna switch) and enters the band-pass filter (L40,L41, L38).
The signal passing through the band-pass filter (L40, L41,L38) is amplified by with an RF amplifier (Q17), passes througha band-pass filter (L32, L34) and enters the first mixer (Q16).
These band-pass filters are tuned to a desired frequencyby varicaps (D21, D20, D19, D18).
A tuning voltage corresponding to the desired signal isapplied to each varicap through the BPF/APC terminal (pin 6)of the MPU (IC8) to tune to the receive frequency.
Double super heterodyneReception method 1st IF Frequency 38.85MHz (Lower)
2nd IF Frequency 450kHz (Lower)Transmission method VCO direct oscillation amplificationModulation Variable reactance phase modulation
Table 1 Basic configuration
ANTSW
SP
LPF
VCO
BPF/APCMPUIC8
PLL
IF AMP,DET
Triplerx 3
TCXO
BPFL41,L40,L38
BPFL32,L34
MIXERQ16
1st Local OSC(PLL)
RF AMPQ17
ANTMCFXF1
IF AMPQ24
FM ICIC3
Q23
2nd Local OSC
X1
AF AMPIC6
5R5R
D20D21
LV
6Tuning voltage
D18D19
38.85MHz
12.8MHz
First Mixer
The received signal passing through the band-pass filter(L32, L34) is mixed with the first local signal generated by theVCO by the first mixer (Q16) to produce a first IF signal (38.85MHz) (Lower heterodyne).
The first IF signal passes through a MCF (Monolithic crystalfilter: XF1) to remove unwanted components.
The first IF signal passing through the MCF (XF1) is amplifiedby an IF amplifier (Q24) and the resulting signal enters the FMIC (IC3).
Fig. 2 Receiver section configuration
Item Rating
Nominal center frequency (fo) 38.85MHzPass bandwidth ±6.0kHz or more at 3dBAttenuation bandwidth ±25kHz or less at 35dBUltimate attenuation 70dB or more (fo –910 kHz)Spurious response 40dB or more (fo +1MHz)Ripple 1dB or lessInsertion loss 4dB or lessTerminating impedance 610Ω ±5% // 3pF ±0.5pF
Table 2 MCF (L71-0619-05) characteristics (TX-RX unit XF1)
Item Rating
Nominal center frequency (fo) 450kHz3dB bandwidth ±6.5kHz or more50dB bandwidth ±15.5kHz or lessRipple 2dB or less (fo ±6.5kHz)Guaranteed attenuation 55dB or more
(fo ±18kHz to ±33kHz)50dB or more (fo ±100kHz)
Insertion loss 4dB or lessI/O matching impedance 1.5kΩ
Table 3 Ceramic filter (L72-0968-05) characteristics (TX-RX unit CF1)
TH-K4AT/K4E
7
CIRCUIT DESCRIPTION
IF Circuit
The first IF signal (38.85 MHz) amplified by the IF amplifier (Q24)and the second IF signal (38.4 MHz) generated by tripling the 12.8MHz reference oscillator frequency of the TCXO (X1) by Q23, aremixed in the FM IC to produce a second IF signal (450 kHz) (Lowerheterodyne).
The second IF signal passes through a ceramic filter (CF1)to remove unwanted components.
The second IF signal passing through the ceramic filter (CF1)passes through the IF amplifier in the FM IC again and isdetected to produced an audio signal.
Squelch and Mute Circuit
A noise component is obtained by passing FM detectionoutput (FM IC pin 9) through an operational amplifier in the
CF1450kHz
CD1
AF OUT
AFM
SM
SQ
IC8MPU
49
9
48
SMV
SQV
16 15 14 13 12 11 10 9
1 2 3 4 5 6 7 8
MIX
LocalOSC
Buffer
RSSI
Quadraturedetector
LPF
NoiseAMP
IF AMP InverterAMP
1st IF input(38.85MHz)
IC3FM IC
2nd local OSC(38.4MHz)
5R
Q21AF FILTER
Q20AF MUTESWITCH
VOL IN
R135
C173 C174
R125
R126
Noisecomp
Rectifier
5R
SP
AF OUT AFFILTER
Q21
AF MUTESWITCH
Q20
IC6AF AMP
IC3FM IC
VR201AF VOLUME
DTMF/BEEP
REMIC8MPU
SPKAFO
SPGREM/TXD
40
46
9
J4SP JACK
Fig. 3 IF, Squelch, Mute and S meter circuit
Fig. 4 AF amplifier
FM IC and band-pass filter consisting of R125, R126, R135,C173, C174. The noise component is rectified in the FM IC toproduce a DC voltage, which is output from the N-REC terminal(pin 14) of the FM IC as squelch voltage.
The squelch voltage enters the SQ terminal (pin 48) of theMPU (IC8) and is compared with the reference voltage presetin the MPU to control audio signal ON/OFF.
When "L" is output from the AFM terminal (pin 9) of the MPU,the AF mute switch (Q20) is activated to mute the audio signal.
S Meter Circuit
The S meter voltage is output from the RSSI terminal (pin12) of the FM IC (IC3) and input to the SM terminal (pin 49) ofthe MPU. Then the voltage is converted from analog to digitalin the MPU to control the S meter display on the LCD.
AF Amplifier
The detected audio signal passes through an AF filter (Q21)and enters an AF mute switch (Q20).
After passing through the AF mute switch (Q20), the signalpasses through an AF volume (VR201) and is amplified to aspecified output level with an AF amplifier (IC6).
The audio signal amplified with the AF amplifier (IC6) isoutput through an internal speaker or an external speakerjack (J4).
The beep tone and the DTMF signal are output from theDTMF/BEEP terminal (pin 40) of the MPU (IC8), enters the AFamplifier (IC6) and is output as a monitor tone.
TH-K4AT/K4E
8
CIRCUIT DESCRIPTION
Transmitter System
Microphone Amplifier Circuit
The audio signal from the microphone passes through ahigh-pass filter (IC5) and enters a microphone amplifier (IC16).
The signal passes through a pre-emphasis circuit, limiteramplifier and splatter filter inside the microphone amplifier.The splatter filter will remove distortion outside the audio band.
Modulation Circuit
The audio signal amplified by the microphone amplifier(IC16) passes through a semi-fixed volume (VR5) formodulation adjustment, and goes to the VCO modulationvaricap (D6) for variable reactance phase modulation.
Drive and Final Circuit
The output signal from VCO (Q1) passes through an RFamplifier (Q2, Q5, Q9) and drive amplifier (Q10, Q11), and isamplified by a power amplifier (Q12).
Transmission/Reception Switching Circuit
The signal amplified by the power amplifier (Q12) passesthrough a transmission/reception switching circuit and a low-pass filter, and is fed to the antenna.
MIC IC5
HPF
IC16MIC AMP
Pre-emphasis
Splatterfilter
VCO
Limiter6 1
Fig. 5 Microphone amplifier circuit
MIC
HPF MICAMP
IC16
ANTSW
D10,D11,L19D12,D13
VCO
Q1
LPF
IC5
VR5MAX DEV
Q2RF AMP
Q5RF AMP
Q9RF AMP
Q10DRIVE AMP
Q11DRIVE AMP
Q12POWER AMP
ANT
Fig. 6 Modulation, Drive, Final and
Transmission/reception switching circuit
APC Circuit
The APC (Automatic Power Control) circuit is used to obtaina stable transmission power and controls transmission outputby detecting the drain current of Q11 and Q12.
The transmission output can be changed in three levels:High, Mid, and Low.
The reference voltage is output from the BPF/APC terminal(pin 6) of the MPU (IC8) and the detection voltage generated byR70, R71 and R72 are fed to the APC differential amplifier (IC2).
The voltage in proportion to the difference betweenreference voltage and detection voltage is output from theBOUT terminal (pin 7) of IC2 as an APC voltage.
Q10
Q15
Q11
Q12
VG
G
Q58
VD
D
LPFD10
D11
ANT
D12
D13
RX
5T
B
1AOUT
IC2APC AMP
2A–IN
3A+IN
4
8
7
6
5GND
V+
BOUT
B–IN
B+IN
R72
R71
R70
Q14
B
Q13
+
TH
1
–t
Q55
7KAPC
51
6BPF/APC
THERM
16FINAL
IC8MPU
L19
Fig. 7 APC and Temperature protection circuit
The transmission/reception switching circuit consists ofD10, D11, L19, D12 and D13. These diodes are turned ON intransmit mode and OFF in receive mode to switch signals.
TH-K4AT/K4E
9
CIRCUIT DESCRIPTION
The APC voltage controls the gate voltage of Q11 and Q12,and keeps transmission output stable.
The MPU detects power supply voltage and controls Q58by transmission power supply voltage and transmission power.For example, if the power supply voltage during transmission,is equal to or higher than approx. 10.5 V and if power is at Midor Low level, the APC voltage level applied to Q12 is reducedby Q58.
Temperature Protection Circuit
To prevent thermal destruction of the power amplifier (Q12),this circuit reduces APC voltage when Q12 temperature rises.
The MPU (IC8) detects temperature with a thermistor (TH1)and controls reference voltage to the APC circuit.
PLL System
PLL Circuit
A reference frequency of 5 kHz or 6.25 kHz is produced bydividing the 12.8 MHz reference frequency of the TCXO (X1)with PLL IC (IC1). Comparison frequency is produced by
TCXOPLL IC
IC1
LOOPFILTER
TO
TCXO5C5/0V
5MS5/0V
PLL5C5/0V
VCX1
12.8MHz
CLOCKDATA
LE
Fo/LDIF Rectifier
LPF Q6
RFAmp
D1-D4
VCO
5C5/0V
LV1~5V
SHIFTH/L
RippleFilter
Q4
OSC
Q1BuffAmp
Q2RF
Amp
Q5
SW
D8,D9
MODSHIFT
SW
Q3
MOD
12.8MHz
TXRX
5T 5/0V5R 5/0V
VR
1
Fig. 8 PLL and VCO circuit
amplifying VCO output with an RF amplifier (Q6) and dividingit with the PLL IC.
The PLL synthesizer with 5 kHz and 6.25 kHz step isconfigured by comparing phases of the reference frequencyand comparison frequency.
The phase difference between reference frequency andcomparison frequency passes through a charge pump in thePLL IC, then ripples are removed with a loop filter with low-range passing characteristics to produce VCO control voltage(lock voltage).
VCO Circuit
The VCO produces a desired frequency directly with aColpits oscillation circuit containing an oscillation transistor (Q1)used for both transmission and reception.
The VCO control voltage is applied to varicap (D1, D2, D3,D4) to produce a desired frequency.
The SHIFT terminal (pin 113) of the MPU (IC8) goes "H"during transmission, and the shift control switch (Q3) is turnedON to change oscillation frequency.
Fo/LD PLL LD
IC8MPU
IC1PLL IC
R32
D16
C40
R3514 102
5C
Fig. 9 Unlock detection circuit
Unlock Detection Circuit
When the PLL is unlocked, the waveform of the pulseoutput from the Fo/LD terminal (pin 14) of the PLL IC (IC1) isrectified with R32, D16, R35 and C40, and the Fo/LD terminalis made "L" level. The voltage at the Fo/LD terminal is detectedby the MPU to control transmission/reception switching timing.
TH-K4AT/K4E
10
Power Supply Circuit
Charging Circuit
When an external power supply is connected to the DC INterminal, the constant-current circuit consisting of Q33 andD31 provides a constant current of approx. 110 mA to the Ni-MH battery.
If no external power supply is connected to the DC INterminal, the constant-current circuit does not function.
Power Supply Switching Circuit
The voltage supplied through the battery terminal or DC INterminal is branched in the power supply switching circuit asshown in Fig.10 and then supplied to the required components.
Battery Type Recognition Circuit
When the battery pack is attached to the transceiver, thebattery type is recognized with the T terminal on thetransceiver. This battery type recognition activates chargingfor the Ni-MH battery pack and displaying the battery meter.
+
-
T
B
J2
RN2701
XC6202PB 52FR
Q41
D32
D81
5T SW
Q37, Q38
2SK18305M
CHARGESW
RB051L-40
IC6D48,49D42,43,46D47,44
BATT CHARGE
5R SW
TK11250 CUCB
5.0V
TK11250 CM
AVR
5C SW
PROTECT
CPH3317
2SJ347
Q35
CHARGE
BTDET
Q34
Q57D33
IC12
AVR
2SB1184(Q,R)2SC4617(R)
IC4
5MS SW
Q55
5MV SW
Q36
RB521S-30
DC-IN DET
RN2105
AF AMP
2SB1184 (Q,R)
PROTECT5.0V
11.5V
AF/LAMP AVR
RN2105
Q53
PROTECT
THERMDET
2SK1830
B
RB051L-40
Q33
AVR
IC9
B
PROTECT
D36RB521S-30
D35
PROTECT
RB521S-30
PROTECT
D30RB521S-30
IC8MPU
D31DA221
CONSTANTCURRENT
BTEMP
DCDET
BATT TERMINAL7.5V Norminal(6.0 - 9.0V)
DC IN13.8V Norminal(12.0 - 16.0V)
IC1TCXOQ4,5,6D40,41
5R
5T
VR1ENC
5C
Q9,10,13D8,10TH1IC16Q47
5MV
IC3,17D9,14Q16,17Q22,23,24
IC5Q30
5MS
Fig. 10 Charging and Power supply switching circuit
Control System
Reset and Backup Circuit
When power is supplied to the transceiver, the 5M voltagegoes "H" as C303 is charged.
A rising edge of the 5M voltage is detected by the voltagedetection IC (IC11) and when its output (RESET) goes "H", thereset status of the MPU is released.
D35 R244 5M
5C
C307
R243
L63BATT 5V
AVR
IC9
IC8MPU
IC15EEPROM
Timing chart
PowerON
5V5M
0
PowerOFF
IN OUT
C303
+IC11
IN OUTRESET
IC10
IN OUT INT
5VRESET
0
5VINT
0
If the supplied voltage to the transceiver is reduced andthe 5M voltage falls below the detection voltage of the voltagedetection IC (IC10), the MPU detects it by an interruptprocessing, backs up data in EEPROM (IC15) and turns thepower off.
Fig. 11 Reset and Backup circuit
CIRCUIT DESCRIPTION
TH-K4AT/K4E
11
Voltage Detection Circuit
Various voltages are input to the A/D port of the MPU (IC8)for processing.
Battery voltage is divided with resistors (R240, R241) andenters the BATT terminal (pin 52) of the MPU.
Battery voltage is used for battery meter indication duringtransmission or for alert tone processing when an abnormalpower supply voltage (approx. 16.5 V or higher) is applied.
Squelch voltage becomes DC voltage by detecting changesin noise voltage in the FM IC (IC3), and the signal is used forsquelch control.
The S meter voltage is output from the RSSI pin of the FMIC to control S meter display.
Detection of thermistor voltage (temperature) in the Ni-MHbattery during charging, detection of remote microphone keypressing and VOX voltage monitoring are performed througheach A/D port of the MPU.
Battery Save Circuit
If there is no signal (squelch off, scan off or no key operation)for longer than 10 seconds, the transceiver will enter thebattery save mode.
Battery save operation is performed by controlling Q57 withan output signal from the 5C (SAVE) terminal (pin 15) of theMPU.
The 5C ON/OFF cycle ratio during battery saving can be setfrom a transceiver menu.
5MS 5C
5MQ41
Q57
37
15
5MS
5C (SAVE)
IC8MPU
Fig. 12 Battery save circuit
LED Drive Circuit
The LCD and key illumination LEDs are lighted by controllingQ51 for the LCD and Q50 for keys according to the outputvoltage from the AF/LAMP AVR (Q37).
The BUSY and TX illumination LEDs are lighted by controllingQ47.
B
AF AMP
D33
Q38
Q37
56LAMP
IC8MPU
99RX LED
D48
D49
D42
D43
D46
Q50
D41BUSY LED
R227
D40
TX LED
R226
5C
5T
D42
D43
Q51
Q47
D42
D43
D44
D47
Fig. 13 LED drive circuit
CIRCUIT DESCRIPTION
TH-K4AT/K4E
12
Key and Encoder Input Circuit
The POWER key is assigned to the interrupt port (pin 95) ofthe MPU.
The PTT key is assigned to the dedicated port (pins 13, 14)of the MPU.
SETCALL#0∗
MONIMR987
LAMPVFO654
MENUF321
KIN0 KOUT0 KOUT1 KOUT2 KOUT3 PWRSW
95
S7POWERSW
J3
ROTARYENCODER
KIN1 KIN2 KIN3 KIN4
IC8MPU
PTTI
14
PTTE
13
ENCB
36
ENCA
35
SET
MONI
LAMP
MENUCALLMRVFOF
KIN0 KOUT0 KOUT1 KOUT2 KOUT3
95
S7
J3
KIN1 KIN2 KIN3 KIN4
IC8MPU
PTTI
14
PTTE
13
ENCB
36
ENCA
35
PWRSW
POWERSW ROTARY
ENCODER
Other keys composes a matrix and key presses are detectedby scanning them by software.
The encoder reads data using the interrupt port (pins 35and 36) of the MPU.
16 key (M2 type)
Fig. 14 Key and Encoder input circuit
4 key (E type)
CIRCUIT DESCRIPTION
TH-K4AT/K4E
13
CTCSS/DCS
The encode signal is generated by the MPU (IC8) and outputfrom the TONE terminal (pin 41) of the MPU.
The unwanted high-frequency components of the encodesignal output from the MPU are removed with a low-pass filter,and applied to VCO modulation input (MOD) and TCXO VCterminal for modulation.
The VCO and TCXO modulation levels are adjusted by VR6to produce flat modulation characteristics in low and highranges.
The decode signal is input to the SIGIN pin (pin 47) of theMPU after the waveform of the audio signal from the FM IC isrectified with a CTCSS/DCS filter (IC17). Then the set CTCSStone frequency and DCS code are detected by digital signalprocessing in the MPU to control muting.
LPFVR6
VCO
VOL OUT
MOD
X1TCXO
VC
IC16
1
6
MICAMP
IC5
HPF
MIC
IC6AF AMP
Vin
IC8MPU
TONE41
40
47 9SIG INVOX IN
DTMF/BEEP
IC17D24Q30 IC3
CTCSS/DCSFILTER
FMIC
50
VR
5
AMP
DTMF
The DTMF signal is generated by the MPU (IC8) and isoutput from the DTMF/BEEP terminal (pin 40) of the MPU.
The DTMF signal is mixed with an audio signal at the inputside of the AF amplifier (IC6), and is output as a monitor tone.
The DTMF signal is mixed with a modulation signal at theinput side of pre-emphasis in the microphone amplifier (IC16)and used as a transmit signal.
VOX
The IC5 and Q30 amplify the audio signal captured in themicrophone, and then the signal is converted into the DCVoltage D24 rectifies.
The DC voltage activates the MPU (IC8), and the VOX starts.
Fig. 15 CTCSS/DCS and DTMF, VOX
Serial Control
Serial control must be enabled from a transceiver menu sothat the REM/TXD pin of the speaker jack (J4) and the PTT(RXD) pin of the microphone jack (J3) function as TXD andRXD, respectively, when communicating with a personalcomputer.
SP
POUT10
HPF
IC5
IC6AF AMP
PTTE
TXD
RXD
REM
IC8MPU
SPKAFO
SPGREM/TXD
13
46J4
SP JACK
IM
5MS
+
–
PTTMIC
J3MIC JACK
5MC
12
11
MIC
Fig. 16 Serial control
CIRCUIT DESCRIPTION
TH-K4AT/K4E
14
MPU : 90522BPFFG139 (IC8)
Pin function
1 CLOCK O Common serial clock output2 DATA O Common serial data output3 EEPDI I Data input from EEPROM4 EEPCS O Chip select output to EEPROM5 VOX O VOX power supply switch L:ON
6 BPF/APC OBPF tuning voltage output, APC voltageoutput (PWM)
7 KAPC O APC ON/OFF switch L:APC ON8 VCC - Positive power supply9 AFM O AF mute switch L:Mute10 SPM O Speaker mute switch H:Mute11 RXD I UART data input line from PC (9600bps)12 TXD O UART data output line to PC (9600bps)13 PTTE I External [PTT] key input L:ON14 PTTI I [PTT] key input L:ON15 5C(SAVE) O Save power supply switch L:ON
16 FINAL OGate bias control of TX final amplifier
L:Bias ON17 SEG0 O LCD segment output 018 SEG1 O LCD segment output 119 SEG2 O LCD segment output 220 SEG3 O LCD segment output 321 SEG4 O LCD segment output 422 SEG5 O LCD segment output 523 SEG6 O LCD segment output 624 SEG7 O LCD segment output 725 SEG8 O LCD segment output 826 SEG9 O LCD segment output 927 SEG10 O LCD segment output 1028 SEG11 O LCD segment output 1129 SEG12 O LCD segment output 1230 SEG13 O LCD segment output 1331 SEG14 O LCD segment output 1432 SEG15 O LCD segment output 1533 VSS - GND
34 COR1 -Power supply stabilization (Connected toVSS through 0.1uF)
35 ENCA I Encoder A side input36 ENCB I Encoder B side input37 5MS O 5MS main power supply switch L:ON38 DVCC - Reference voltage input for DAC39 DVSS - Ground for DAC
40DTMF/
OEncode waveform output of DTMF/BEEP/
BEEP 1750Hz (D/A)
41 TONE OEncode waveform output of CTCSS/DCS(D/A)
42 AVCC - Positive power supply for ADC43 AVRH - Reference voltage input for ADC44 AVRL - Ground reference voltage input for ADC45 AVSS - Ground for ADC
46 REM IRemote control microphone key voltageinput (A/D)
47 SIGIN IDecode waveform input of CTCSS/DCS(A/D)
Pin Pin I/O FunctionNo. NamePin Pin I/O FunctionNo. Name48 SQ I Noise voltage input for squelch (A/D)49 SM I RSSI voltage input for S-meter (A/D)50 VOXIN I Microphone voltage input for VOX (A/D)51 THERM I TX temperature compensation input(A/D)52 BATT I Battery voltage input (A/D)
53 BTEMP IDetection of thermistor voltage (temperature)in the Ni-MH battety (A/D)
54 VCC - Positive power supply
55 CHARGE OBattery charge circuit power supply switch
H:ON56 LAMP O Lamp power supply switch H:ON
57 AFAMP OAF amplifier/Lamp AVR power supplyswitch H:ON
58 NAR O Wide/Narrow switching H:Narrow59 COM0 O LCD common output 060 COM1 O LCD common output 161 COM2 O LCD common output 262 COM3 O LCD common output 363 VSS - GND64 SEG16 O LCD segment output 1665 SEG17 O LCD segment output 1766 SEG18 O LCD segment output 1867 SEG19 O LCD segment output 1968 SEG20 O LCD segment output 2069 SEG21 O LCD segment output 2170 SEG22 O LCD segment output 2271 SEG23 O LCD segment output 2372 SEG24 O LCD segment output 2473 NC - Not used74 NC - Not used75 SEG25 O LCD segment output 2576 SEG26 O LCD segment output 2677 SEG27 O LCD segment output 2778 SEG28 O LCD segment output 2879 SEG29 O LCD segment output 2980 SEG30 O LCD segment output 3081 SEG31 O LCD segment output 3182 V0 - Not used83 V1 - Not used84 V2 - Not used85 V3 - LCD drive power supply 386 HST(VCC) I Not used (VCC)87 MD2 I “L” fixed88 MD1 I “H” fixed89 MD0 I “H” fixed90 RESET I Reset input L:Reset91 VSS - GND92 X0 I System clock (7.9872MHz)93 X1 O System clock (7.9872MHz)94 VCC - Positive power supply95 PWRSW I Power switch interrupt input (↓)96 INTUP I Power supply voltage interrupt input (↑)97 INTDW I Power supply voltage interrupt input (↓)
SEMICONDUCTOR DATA
TH-K4AT/K4E
15
98 DCDET IDC IN detection interrupt input (↓)
L:DC IN connected99 RXLED O Busy LED output H:ON
100 BSFT O Beat shift swiching output H:ON101 PLLEN O Serial enable output to PLL IC102 PLLLD I Lock detection input from PLL IC H: Lock103 KIN0 I Key matrix input 0104 KIN1 I Key matrix input 1105 KIN2 I Key matrix input 2106 KIN3 I Key matrix input 3107 KIN4 I Key matrix input 4108 TYPE I Market code bit input109 VUKEY I Detection of VHF or UHF, 4 key or 16 key110 MICM O Microphone mute switch H:Mute111 NOAA I Not used112 5R O RX power supply switch L:ON113 SHIFT O VCO shift switch L:RX, H:TX114 5T O TX power supply switch L:ON115 KOUT0 O Key matrix output 0116 KOUT1 O Key matrix output 1117 KOUT2 O Key matrix output 2118 KOUT3 O Key matrix output 3119 VSS - GND120 BTDET O Battery detection switch L:ON
SEMICONDUCTOR DATA / COMPONENTS DESCRIPTION
Pin Pin I/O FunctionNo. Name
IC1 PLL IC
IC2APC differentialamplifier
IC3 FM ICIC4 11.5V AVRIC5 HPF Active filterIC6 AF amplifierIC8 MPUIC9 5.0V AVR
IC104.4V voltage
MPU INT voltage detectiondetection
IC113.3V voltage
MPU Reset voltage detectiondetection
IC12 5.0V AVRIC15 EE PROMIC16 MIC amplifier Limiter, splatter filter
IC17CTCSS/DCS
Active filterfilter
Q1 VCOQ2 RF amplifier
Q3VCO shift
On TXcontrol switch
Q4 Ripple filterQ5,6,9 RF amplifierQ10,11 Drive amplifier
Q12 Power amplifier
Q13APC circuit
On TXoperation switch
Q14APC output
On TXswitch
Q15Q10 operation
On TXswitch
Q16 1st mixerQ17 RX 1st amplifier
Q20Audio mute
Audio mute when offswitch
Q21 Audio filter Active filter
Q22Wide/narrow
On when wide is selectedswitching
Q23 Tripler 2nd localQ24 IF amplifier 1st IF 38.85MHz
Q27Wide/narrow
On when wide is selectedswitching
Q29MIC mute
Mutes when ONswitch
Q30VOX detectionamplifier
Q31Q56 operation
Off when the speaker outputs audioswitch
Q33 Charge switch
Ref. No. Use/Function Operation/Condition/Compatibility
TX-RX UNIT (X57-675X-XX)
COMPONENTS DESCRIPTION
TH-K4AT/K4E
16
D34AVRconstant-voltage
D35Reverse current
Batteryprevention
D36Reverse current
DC INprevention
D40 TX LED Lights on TXD41 BUSY LED Lights on RX
D42-44 Key illuminationKey backlight illumination
D46,47 LED
D48,49LCD illumination
LCD backlight illuminationLED
D60Key typedetection
D61UHF typedetection
D62-65market codedetection
D69-72Reverse current
Key matrixprevention
D73 Voltage drop
D74Over inputprotection
D79,80 Limiter
D81Reverse currentprevention
COMPONENTS DESCRIPTION
Ref. No. Use/Function Operation/Condition/Compatibility Ref. No. Use/Function Operation/Condition/Compatibility
Q34Q33 operation
On when chargingswitch
Q35 DC IN detection H: DC IN detection
Q36Ni-MH temperature
On when temperature detection is activateddetection
Q37AF amplifier/Lamp AVR
Q38Q37 operation On when the speaker outputs the audioswitch or lamp lights
Q41 5MS switch On when 5MS is applied
Q47TX/BUSY LEDswitch
Q50 Key LED switch On when the key LED lights
Q51LCD LED
On when the LCD LED lightsswitch
Q52Beat shiftswitch
Q53 5R/5MV switch On when 5R or 5MV is appliedQ55 5T switch On when 5T is applied
Q56Speaker muteswitch
Q57 5C switch On when 5C is applied
Q58Q12 gate
Off when High power is selectedvoltage switch
D1-4VCO frequencycontrol
D5 Frequency shiftD6 VCO modulationD7 Speed up Ripple filterD8 RF switch On TXD9 RF switch On RX
D10-13 Antenna switch On TX
D14Reverse current
APC reference voltageprevention
D15APC outputvoltage limiter
D16 PLL lock detectionD18-21 RX BPF tuning
D22MIC mutecontrol
D24VOX detectionrectification
D25Speaker mutespeed up
D26 C246 discharge
D27MIC ALCrectification
D30Reverse current
Charge currentprevention
D31Constant-current
Constant-current chargecircuit
D32Reverse current
DC INprevention
D33Reverse current
Batteryprevention
TH-K4AT/K4E
17
∗ New Parts. indicates safety critical components.Parts without Parts No. are not supplied.Les articles non mentionnes dans le Parts No. ne sont pas fournis.Teile ohne Parts No. werden nicht geliefert.
L: Scandinavia K: USA P: CanadaY: PX (Far East, Hawaii) T: England E: EuropeY: AAFES (Europe) X: Australia M: Other Areas
Parts No. DescriptionAddressNewpartsDestination Destination
TH-K4AT/K4E
Ref. No. Parts No. DescriptionAddressNewparts
TH-K4AT/K4E (Y50-581X-XX)TX-RX UNIT (X57-675X-XX)
Ref. No.
PARTS LIST
E : TH-K4E M2 : TH-K4AT
F 3A,3C N82-2007-46 PAN HEAD TAPTITE SCREW(CASE)G 2A,2C N09-2433-05 PAN HEAD TAPTITE SCREW(FINAL FET)
39 2B,2D R39-0602-05 VARIABLE RESISTOR
40 1A,1C T07-0341-15 SPEAKER41 2F,3G ∗ T90-1019-25 HELICAL ANTENNA ACCESSORY
42 2F ∗ W08-0959-05 CHARGER(230V/13.8V) ACCESSORY E43 2E ∗ W09-0991-05 BATTERY ASSY(7.2V/1100MAH) ACCESSORY E
D40 B30-2156-05 LED(RED)D41 B30-2157-05 LED(YELLOW)D42-44 B30-2205-05 LED(YG) M2D42,43 B30-2205-05 LED(YG) ED46 B30-2205-05 LED(YG) E
D46,47 B30-2205-05 LED(YG) M2D48,49 B30-2237-05 LED(YG)
C1 CK73HB1C103K CHIP C 0.010UF KC2 ∗ CC73HCH1H390G CHIP C 39PF GC3 CC73HCH1H020B CHIP C 2.0PF BC4 CK73HB1H471K CHIP C 470PF KC5 CK73HB1A104K CHIP C 0.10UF K
C6 CK73HB1H471K CHIP C 470PF KC7 CC73HCH1H0R5B CHIP C 0.5PF BC8,9 CC73HCH1H050B CHIP C 5.0PF BC10 CK73HB1C103K CHIP C 0.010UF KC11 CK73HB1H471K CHIP C 470PF K
C13 CC73HCH1H0R5B CHIP C 0.5PF BC14 CK73HB1H471K CHIP C 470PF KC15 CC73HCH1H120J CHIP C 12PF JC17,18 CK73HB1H471K CHIP C 470PF KC19 CC73HCH1H080D CHIP C 8.0PF D
C20 CC73HCH1H050C CHIP C 5.0PF CC21 CK73HB1H471K CHIP C 470PF KC22 CC73HCH1H040C CHIP C 4.0PF CC24-26 CK73HB1H471K CHIP C 470PF KC27 C92-0628-05 CHIP-TAN 10UF 10WV
C29 C92-0712-05 CHIP-TAN 22UF 6.3WVC30 CK73HB1H471K CHIP C 470PF KC33 C92-0002-05 CHIP-TAN 0.22UF 35WVC34 C92-0656-05 TANTALUM C 2.2UF 6.3WVC35 C92-0001-05 CHIP-C 0.1UF 35WV
C37 CK73HB1H471K CHIP C 470PF KC38 CK73HB1C103K CHIP C 0.010UF KC40 CK73HB1A104K CHIP C 0.10UF KC41 C92-0507-05 CHIP-TAN 4.7UF 6.3WVC42 CK73HB1H471K CHIP C 470PF K
C43 CK73HB1C103K CHIP C 0.010UF KC44-46 CC73HCH1H101J CHIP C 100PF JC50 CC73HCH1H220J CHIP C 22PF JC51 CC73GCH1H220J CHIP C 22PF JC52 CC73HCH1H100D CHIP C 10PF D
C54 CK73HB1H471K CHIP C 470PF KC55 CK73HB1C103K CHIP C 0.010UF K
1 3A,2G ∗ A02-3817-02 CABINET ASSY(BATTERY CASE) M22 1A ∗ A02-3822-23 CABINET ASSY(16KEY) M23 1C ∗ A02-3823-23 CABINET ASSY(4KEY) E4 3A,3C ∗ A10-4066-11 CHASSIS5 3B,3D ∗ A82-0053-02 REAR PANEL
6 1B,1D ∗ B09-0675-03 CAP(SP/MIC/DC IN)7 1A,1C ∗ B10-2746-03 FRONT GLASS8 1B,1D ∗ B11-1805-03 ILLUMINATION GUIDE(LCD)9 2B,2D ∗ B11-1806-04 FILTER(LCD)10 1B,1D ∗ B38-0881-05 LCD
11 1G ∗ B62-1695-00 INSTRUCTION MANUAL(CHINESE) M211 1E,1G ∗ B62-1696-00 INSTRUCTION MANUAL(ENGLISH)11 1E ∗ B62-1697-00 INSTRUCTION MANUAL(SPANISH) E11 1E ∗ B62-1699-00 INSTRUCTION MANUAL(GERMAN) E11 1E ∗ B62-1702-00 INSTRUCTION MANUAL(ITALIAN) E
11 1E ∗ B62-1757-00 INSTRUCTION MANUAL(FRENCH) E11 1E ∗ B62-1758-00 INSTRUCTION MANUAL(DUTCH) E12 3A ∗ B72-2131-04 MODEL NAME PLATE(TH-K4AT) M212 3C ∗ B72-2132-04 MODEL NAME PLATE(TH-K4E) E
13 2B,2D ∗ E04-0443-05 RF COAXIAL RECEPTACLE(SMA)14 2A,2C ∗ E23-1234-04 TERMINAL(BATTERY)15 2B,2D ∗ E29-1199-04 INTER CONNECTOR(LCD)16 1A,1C ∗ E37-1106-05 LEAD WIRE WITH CONNECTOR(SP)
17 2A ∗ F10-2464-04 SHIELDING COVER(FINAL FET) M218 2A,2C ∗ F10-2465-04 SHIELDING COVER(ANT TERMINAL)19 2C ∗ F10-2494-04 SHIELDING COVER(FINAL FET) E20 2B,2D ∗ F15-1008-04 SHADOW PLATE(LCD)- ∗ G10-1317-04 FIBROUS SHEET(SP NET)- G11-4296-04 SHEET21 3B,3D G53-1529-04 PACKING(VOL/ENC)22 2A,2C ∗ G53-1572-12 PACKING(CASE)23 2B,2D ∗ G53-1589-03 PACKING(SP/MIC)
24 3E ∗ H52-1964-02 ITEM CARTON CASE(TH-K4E) E25 2H ∗ H52-1965-12 ITEM CARTON CASE(TH-K4AT) M226 2F ∗ H12-3146-01 PACKING FIXTURE E27 3G ∗ H12-3147-03 PACKING FIXTURE M2
28 2A,2C ∗ J19-5451-03 HOLDER(TERMINAL)29 1B,1D J21-8456-03 HARDWARE FIXTURE(LCD)30 2E,3G ∗ J29-0709-04 BELTHOOK ASSY ACCESSORY31 2A,2C ∗ J30-1284-04 SPACER(PTT KNOB)32 3E,2G J69-0342-05 HANDSTRAP ACCESSORY
33 2B,2D J82-0076-05 FPC(VOL/ENC)44 3A,3C J99-0376-04 ADHESIVE TAPE
34 1B,1D K29-5150-03 KNOB(VOL)35 1B,1D K29-5159-03 KNOB(ENC)36 1A ∗ K29-9272-02 KEY TOP(16KEY) M237 1A,1C ∗ K29-9274-03 KNOB(PTT/LAMP/MONI)38 1C ∗ K29-9276-02 KEY TOP(4KEY) E
A 2B,2D N09-1492-05 PAN HEAD SCREW(SMA)B 1B,1D N14-0569-04 CIRCULAR NUT(VOL/ENC)C 1B,1D N14-0573-04 CIRCULAR NUT(SMA)D 1A,1C N79-2035-46 PAN HEAD TAPTITE SCREW(PCB)E 2A,2C N79-2040-45 PAN HEAD TAPTITE SCREW(HOLDER,R PANEL)
TX-RX UNIT (X54-675X-XX) 0-21 : M2 2-71 : E
TH-K4AT/K4EPARTS LIST
18
TX-RX UNIT (X57-675X-XX)
DestinationRef. No. Parts No. DescriptionAddressNewparts DestinationRef. No. Parts No. DescriptionAddress
Newparts
E : TH-K4E M2 : TH-K4AT
C56 CK73HB1H471K CHIP C 470PF KC57 CC73HCH1H100D CHIP C 10PF DC61 CK73HB1H471K CHIP C 470PF KC64 CK73HB1H471K CHIP C 470PF KC65 CC73HCH1H100D CHIP C 10PF D
C66 CK73GB1C104K CHIP C 0.10UF KC67 CK73HB1H471K CHIP C 470PF KC68 CC73HCH1H100D CHIP C 10PF DC70 CK73GB0J105K CHIP C 1.0UF KC71 CK73HB1H471K CHIP C 470PF K
C72 CK73GB1C104K CHIP C 0.10UF KC73 CK73HB1H471K CHIP C 470PF KC75 CK73HB1H471K CHIP C 470PF KC76 CC73GCH1H080D CHIP C 8.0PF DC77 CC73GCH1H470J CHIP C 47PF J
C78 CK73HB1H471K CHIP C 470PF KC82 CK73HB1H471K CHIP C 470PF KC83 CK73HB1C103K CHIP C 0.010UF KC84 CK73HB1A104K CHIP C 0.10UF KC86 ∗ C93-0766-05 CERAMIC C 56PF J
C87 ∗ C93-0754-05 CERAMIC C 18PF JC88 CC73GCH1H200G CHIP C 20PF GC89 CC73GCH1H330J CHIP C 33PF JC90,91 CK73HB1H471K CHIP C 470PF KC93 CC73GCH1H030B CHIP C 3.0PF B
C94 CK73GB1H471K CHIP C 470PF KC95 CC73GCH1H020B CHIP C 2.0PF BC96 CC73GCH1H010B CHIP C 1.0PF BC97 CC73GCH1H040B CHIP C 4.0PF BC98 CC73GCH1H020B CHIP C 2.0PF B
C99 CC73GCH1H050B CHIP C 5.0PF BC100 CC73GCH1H020B CHIP C 2.0PF BC101 CC73GCH1H040B CHIP C 4.0PF BC102 CC73GCH1H030B CHIP C 3.0PF BC105-107 CK73HB1H471K CHIP C 470PF K
C108 CC73HCH1H101J CHIP C 100PF JC109-115 CK73HB1H471K CHIP C 470PF KC116 C92-0544-05 CHIP-TAN 10UF 4WVC117,118 CK73HB1H471K CHIP C 470PF KC124 CK73HF1C104Z CERAMIC C 0.1UF Z
C125 CC73HCH1H1R5C CHIP C 1.5PF CC126 CC73HCH1H100D CHIP C 10PF DC128 CK73HB1C103K CHIP C 0.010UF KC129 CC73HCH1H110J CHIP C 11PF JC130 CK73HB1H471K CHIP C 470PF K
C131-133 CK73HB1C103K CHIP C 0.010UF KC134 CK73HB1H471K CHIP C 470PF KC135,136 CC73HCH1H050C CHIP C 5.0PF CC137 CC73HCH1H070D CHIP C 7.0PF DC139 CK73HB1H471K CHIP C 470PF K
C140 CC73HCH1H040B CHIP C 4.0PF BC141,142 CK73HB1H471K CHIP C 470PF KC144 ∗ CC73HCH1H180G CHIP C 18PF GC145 CC73HCH1H080B CHIP C 8.0PF BC146 CC73HCH1H040B CHIP C 4.0PF B
C147 CK73HB1H471K CHIP C 470PF KC148 CC73HCH1H060B CHIP C 6.0PF BC152,153 CK73HB1H471K CHIP C 470PF KC156 CK73HB1H471K CHIP C 470PF KC157 ∗ CC73HCH1H180G CHIP C 18PF G
C158 CC73HCH1H130G CHIP C 13PF GC159 CC73HCH1H030B CHIP C 3.0PF BC160 CC73HCH1H130G CHIP C 13PF GC161 CC73HCH1H030B CHIP C 3.0PF BC162-164 CK73HB1H471K CHIP C 470PF K
C165 CC73HCH1H030B CHIP C 3.0PF BC166 CK73HB1C103K CHIP C 0.010UF KC167,168 CK73HB1A104K CHIP C 0.10UF KC169,170 CK73HB1A683K CHIP C 0.068UF KC171 CK73HB1H471K CHIP C 470PF K
C172 CK73HB1H182K CHIP C 1800PF KC173,174 ∗ CC73HCH1H181J CHIP C 180PF JC175 CC73HCH1H220J CHIP C 22PF JC176 CK73HB1A104K CHIP C 0.10UF KC177 C92-0628-05 CHIP-TAN 10UF 10WV
C178 CK73HB1C103K CHIP C 0.010UF KC179 CK73HB1A104K CHIP C 0.10UF KC180 CC73HCH1H121J CHIP C 120PF JC182,183 CK73HB1A104K CHIP C 0.10UF KC186 CC73HCH1H240J CHIP C 24PF J
C187 CC73HCH1H020C CHIP C 2.0PF CC188 CC73HCH1H240J CHIP C 24PF JC189 CK73HB1H471K CHIP C 470PF KC190-192 CK73HB1C103K CHIP C 0.010UF KC193 C92-0507-05 CHIP-TAN 4.7UF 6.3WV
C194 CK73HB1A104K CHIP C 0.10UF KC195 C92-0628-05 CHIP-TAN 10UF 10WVC196,197 CK73GB1C273K CHIP C 0.027UF KC198 CK73EF1C105Z CHIP C 1.0UF ZC200 CK73HB1C103K CHIP C 0.010UF K
C201 CK73HB1H122K CHIP C 1200PF KC202 CK73HB1H271K CHIP C 270PF KC203 CC73HCH1H121J CHIP C 120PF JC204 CK73HB1A333K CHIP C 0.033UF KC205 CK73HB1A473K CHIP C 0.047UF K
C206 ∗ CK73HB1C183K CHIP C 0.018UF KC207 CK73HB1C223K CHIP C 0.022UF KC208 CC73HCH1H820J CHIP C 82PF JC209 CK73HB1H471K CHIP C 470PF KC210 CK73HB1C103K CHIP C 0.010UF K
C211 CK73HB1H222K CHIP C 2200PF KC212 CK73HB1C123K CHIP C 0.012UF KC213 C92-0714-05 TANTALUM C 4.7UF 6.3WVC219 CK73HB1A473K CHIP C 0.047UF KC220 CK73HB1E472K CHIP C 4700PF K
C221,222 CK73HB1C103K CHIP C 0.010UF KC223 CK73HB1H471K CHIP C 470PF KC224 CK73HB1A104K CHIP C 0.10UF KC225 CK73GB0J105K CHIP C 1.0UF KC226 CK73HB1A104K CHIP C 0.10UF K
C227 C92-0587-05 CHIP-TAN 2.2UF 4WVC228,229 CK73HB1A104K CHIP C 0.10UF KC230 CK73FB1C105K CHIP C 1.0UF KC231 CK73HB1H471K CHIP C 470PF KC235,236 CK73HB1C103K CHIP C 0.010UF K
C237 C92-0628-05 CHIP-TAN 10UF 10WVC238-241 CK73HB1H471K CHIP C 470PF KC242 CK73HB1C103K CHIP C 0.010UF KC243 CK73HB1H471K CHIP C 470PF KC246 C92-1327-05 CHIP-TAN 100UF 10WV
TH-K4AT/K4EPARTS LIST
19
TX-RX UNIT (X57-675X-XX)
DestinationRef. No. Parts No. DescriptionAddressNewparts DestinationRef. No. Parts No. DescriptionAddress
Newparts
E : TH-K4E M2 : TH-K4AT
C247,248 CK73HB1A104K CHIP C 0.10UF KC249 CK73HB1H471K CHIP C 470PF KC250 CK73EF1C105Z CHIP C 1.0UF ZC252 CC73HCH1H101J CHIP C 100PF JC253 C92-0628-05 CHIP-TAN 10UF 10WV
C255 C92-0628-05 CHIP-TAN 10UF 10WVC256,257 CK73HB1H102K CHIP C 1000PF KC258 CK73HB1A104K CHIP C 0.10UF KC270-272 CK73HB1H471K CHIP C 470PF KC276 CK73HB1H471K CHIP C 470PF K
C279-285 CK73HB1H471K CHIP C 470PF KC286 CK73FB1C105K CHIP C 1.0UF KC290,291 CK73HB1H471K CHIP C 470PF KC293 CC73HCH1H470J CHIP C 47PF JC294,295 CC73HCH1H050C CHIP C 5.0PF C
C297 CK73HB1A104K CHIP C 0.10UF KC298 CK73HB1H471K CHIP C 470PF KC299 CK73FB1C105K CHIP C 1.0UF KC300 CK73HB1H471K CHIP C 470PF KC302 CK73HB1H471K CHIP C 470PF K
C303 C92-0605-05 TANTALUM C 150UF 6.3WVC304-306 CK73HB1H471K CHIP C 470PF KC307 CK73HB1A104K CHIP C 0.10UF KC308 CK73HB1H471K CHIP C 470PF KC309 CK73FB1C105K CHIP C 1.0UF K
C310 CK73EF1C105Z CHIP C 1.0UF ZC311 CK73GB1C104K CHIP C 0.10UF KC312,313 CK73HB1A393K CHIP C 0.039UF KC314 CK73HB1H471K CHIP C 470PF KC316 CK73GB1C104K CHIP C 0.10UF K
C317,318 CK73HB1H471K CHIP C 470PF KC319 C92-0628-05 CHIP-TAN 10UF 10WVC323,324 CK73HB1H471K CHIP C 470PF KC326 CK73HB1H471K CHIP C 470PF KC327 CK73HB1A104K CHIP C 0.10UF K
C328 CK73GB0J105K CHIP C 1.0UF KC329 CC73FCH1H120J CHIP C 12PF JC330,331 CK73HB1H471K CHIP C 470PF KC332 CK73HB1A104K CHIP C 0.10UF KC335,336 CK73HB1A104K CHIP C 0.10UF K
C338 CK73FB1C105K CHIP C 1.0UF KC339 CK73HB1A473K CHIP C 0.047UF KC344-348 CK73HB1H471K CHIP C 470PF KC349 CK73HB1A104K CHIP C 0.10UF KC351 CK73HB1C103K CHIP C 0.010UF K
C352-354 CK73HB1H471K CHIP C 470PF KC355,356 CK73HB1C103K CHIP C 0.010UF KC357 CK73EF1C105Z CHIP C 1.0UF ZC358 CK73HB1A473K CHIP C 0.047UF KC359,360 CK73HB1A104K CHIP C 0.10UF K
C361 CK73HB1H471K CHIP C 470PF KC363 CC73HCH1H100C CHIP C 10PF CC364 CC73FCH1H180J CHIP C 18PF JC365-367 CK73HB1H471K CHIP C 470PF KC368 CK73GB1H471K CHIP C 470PF K
C369-371 CK73HB1H471K CHIP C 470PF KC372 CK73GB1H471K CHIP C 470PF KC374 CC73HCH1H101J CHIP C 100PF J EC510 CK73HB1A473K CHIP C 0.047UF KC511 CK73HB1H471K CHIP C 470PF K
C512 CC73HCH1H101J CHIP C 100PF J E
CN1 E40-5915-05 FLAT CABLE CONNECTORCN2 E40-5929-05 PIN ASSYCN6 ∗ E40-6327-05 PIN ASSYCN7 E40-5630-05 PIN ASSY SOCKETCN8 ∗ E40-6308-05 PIN ASSY
CN9 ∗ E40-6309-05 PIN ASSY SOCKETCN15 E23-1081-05 TERMINALCN17 E23-1081-05 TERMINALJ2 E03-0190-05 DC JACKJ3 E11-0484-05 3.5D PHONE JACK(3.5D)
J4 E11-0483-05 2.5D PHONE JACK(2.5D)
CN10 F01-1032-05 RADIATION PLATEF1 F53-0286-05 FUSE(2.5A/32V)F3 F53-0287-05 FUSE(0.5A/32V)
CD1 L79-1474-05 TUNING COILCF1 L72-0968-05 CERAMIC FILTERL1,2 L40-2785-92 SMALL FIXED INDUCTOR(270NH)L3 ∗ L41-2278-14 SMALL FIXED INDUCTORL4 L41-6868-14 SMALL FIXED INDUCTOR
L5,6 L40-2785-92 SMALL FIXED INDUCTOR(270NH)L8 L40-1875-71 SMALL FIXED INDUCTOR(18NH)L9 L40-2275-71 SMALL FIXED INDUCTOR(22NH)L10 L40-1875-71 SMALL FIXED INDUCTOR(18NH)L11 L40-1575-71 SMALL FIXED INDUCTOR(15NH)
L13 L92-0149-05 FERRITE CHIPL14,15 ∗ L41-4763-14 SMALL FIXED INDUCTORL16 L34-4577-05 AIR-CORE COILL17 L34-4602-05 AIR-CORE COILL18 ∗ L41-2285-14 SMALL FIXED INDUCTOR
L19-22 L34-4564-05 AIR-CORE COILL23 L40-1092-81 SMALL FIXED INDUCTORL24 L40-2775-71 SMALL FIXED INDUCTOR(27NH)L25 L92-0149-05 FERRITE CHIPL26 ∗ L41-4785-14 SMALL FIXED INDUCTOR
L27 ∗ L41-6885-14 SMALL FIXED INDUCTORL28 L40-1275-71 SMALL FIXED INDUCTOR(12NH)L29 L40-1575-71 SMALL FIXED INDUCTOR(15NH)L30 L34-4564-05 AIR-CORE COILL32 L41-2778-14 SMALL FIXED INDUCTOR
L34 L41-2778-14 SMALL FIXED INDUCTORL35 ∗ L41-1585-14 SMALL FIXED INDUCTORL36 L41-5678-14 SMALL FIXED INDUCTORL38 L41-1278-14 SMALL FIXED INDUCTORL40 ∗ L41-4763-14 SMALL FIXED INDUCTOR
L41 L41-6868-14 SMALL FIXED INDUCTORL45,46 ∗ L41-5685-14 SMALL FIXED INDUCTORL49 L92-0131-05 FERRITE CHIPL50 L92-0137-05 FERRITE CHIPL53 L40-1275-71 SMALL FIXED INDUCTOR(12NH)
L54 L40-4768-71 SMALL FIXED INDUCTOR(4.7NH)L56 L41-6868-14 SMALL FIXED INDUCTORL58 ∗ L41-8285-14 SMALL FIXED INDUCTORL63 L92-0140-05 FERRITE CHIPL64 L40-4795-85 SMALL FIXED INDUCTOR(4.7UH)
L65 L40-2775-71 SMALL FIXED INDUCTOR(27NH)L67 L92-0161-05 BEADS COREL68 L92-0163-05 BEADS CORE
TH-K4AT/K4EPARTS LIST
20
TX-RX UNIT (X57-675X-XX)
DestinationRef. No. Parts No. DescriptionAddressNewparts DestinationRef. No. Parts No. DescriptionAddress
Newparts
E : TH-K4E M2 : TH-K4AT
X1 ∗ L77-1931-05 TCXO(12.8MHZ)X3 ∗ L77-1940-05 CRYSTAL RESONATOR(7.982MHZ)XF1 ∗ L71-0619-05 MCF(38.85MHZ)
CP1 ∗ RK75HA1J272J CHIP-COM 2.7K J 1/16WCP2 RK75GB1J392J CHIP-COM 3.9K J 1/16WCP31 RK75GB1J392J CHIP-COM 3.9K J 1/16WCP32-35 RK75HA1J102J CHIP-COM 1.0K J 1/16WR4 RK73HB1J102J CHIP R 1.0K J 1/16W
R5 RK73HB1J104J CHIP R 100K J 1/16WR6 RK73HB1J102J CHIP R 1.0K J 1/16WR7 RK73HB1J473J CHIP R 47K J 1/16WR8 RK73HB1J104J CHIP R 100K J 1/16WR9 RK73HB1J151J CHIP R 150 J 1/16W
R10 RK73HB1J470J CHIP R 47 J 1/16WR11 RK73HB1J154J CHIP R 150K J 1/16WR12 RK73HB1J470J CHIP R 47 J 1/16WR14 RK73HB1J332J CHIP R 3.3K J 1/16WR15 RK73HB1J562J CHIP R 5.6K J 1/16W
R16 RK73HB1J271J CHIP R 270 J 1/16WR17 RK73HB1J332J CHIP R 3.3K J 1/16WR18 RK73HB1J330J CHIP R 33 J 1/16WR19 RK73HB1J124J CHIP R 120K J 1/16WR20 RK73HB1J102J CHIP R 1.0K J 1/16W
R21 RK73HB1J472J CHIP R 4.7K J 1/16WR24 RK73HB1J122J CHIP R 1.2K J 1/16WR30 RK73HB1J102J CHIP R 1.0K J 1/16WR31 RK73HB1J222J CHIP R 2.2K J 1/16WR32 RK73HB1J102J CHIP R 1.0K J 1/16W
R33 RK73HB1J220J CHIP R 22 J 1/16WR34 RK73HB1J332J CHIP R 3.3K J 1/16WR35 RK73HB1J124J CHIP R 120K J 1/16WR36 RK73HB1J100J CHIP R 10 J 1/16WR37,38 RK73HB1J273J CHIP R 27K J 1/16W
R39 RK73HB1J271J CHIP R 270 J 1/16WR41 RK73HB1J271J CHIP R 270 J 1/16WR42 R92-1368-05 CHIP R 0 OHMR45 RK73HB1J332J CHIP R 3.3K J 1/16WR46 RK73HB1J103J CHIP R 10K J 1/16W
R47 RK73HB1J562J CHIP R 5.6K J 1/16WR49 RK73HB1J102J CHIP R 1.0K J 1/16WR50 RK73HB1J330J CHIP R 33 J 1/16WR51 RK73HB1J471J CHIP R 470 J 1/16WR52,53 RK73HB1J102J CHIP R 1.0K J 1/16W
R54 RK73HB1J470J CHIP R 47 J 1/16WR55 RK73HB1J472J CHIP R 4.7K J 1/16WR56 RK73HB1J103J CHIP R 10K J 1/16WR58 RK73HB1J470J CHIP R 47 J 1/16WR59 RK73HB1J123J CHIP R 12K J 1/16W
R60 RK73HB1J563J CHIP R 56K J 1/16WR61,62 RK73HB1J271J CHIP R 270 J 1/16WR64 R92-1368-05 CHIP R 0 OHMR70-72 RK73EB2ER39K CHIP R 0.39 K 1/4WR74,75 RK73HH1J104D RESISTOR 100K D 1/16W
R76-79 RK73HH1J154D RESISTOR 150K D 1/16WR80 RK73HB1J103J CHIP R 10K J 1/16WR81 RK73HB1J394J CHIP R 390K J 1/16WR82 RK73HB1J273J CHIP R 27K J 1/16WR83 RK73HB1J563J CHIP R 56K J 1/16W
R84 RK73HB1J104J CHIP R 100K J 1/16W
R85 RK73GB1J561J CHIP R 560 J 1/16WR86 RK73HB1J562J CHIP R 5.6K J 1/16WR88 RK73HB1J331J CHIP R 330 J 1/16WR90 RK73HB1J331J CHIP R 330 J 1/16WR91 RK73HB1J102J CHIP R 1.0K J 1/16W
R92 RK73HB1J332J CHIP R 3.3K J 1/16WR93 RK73HB1J470J CHIP R 47 J 1/16WR94 RK73HB1J331J CHIP R 330 J 1/16WR95 RK73HB1J184J CHIP R 180K J 1/16WR96 RK73HB1J104J CHIP R 100K J 1/16W
R97 RK73HB1J154J CHIP R 150K J 1/16WR98 RK73HB1J104J CHIP R 100K J 1/16WR99,100 RK73HB1J105J CHIP R 1.0M J 1/16WR101 RK73HB1J470J CHIP R 47 J 1/16WR103 RK73HB1J182J CHIP R 1.8K J 1/16W
R104 RK73HB1J151J CHIP R 150 J 1/16WR107 RK73HB1J104J CHIP R 100K J 1/16WR108 RK73HB1J124J CHIP R 120K J 1/16WR109 RK73HB1J104J CHIP R 100K J 1/16WR110,111 RK73HB1J105J CHIP R 1.0M J 1/16W
R115 RK73HB1J562J CHIP R 5.6K J 1/16WR116 RK73HB1J124J CHIP R 120K J 1/16WR117 RK73HH1J272D RESISTOR 2.7K D 1/16WR118 RK73HB1J273J CHIP R 27K J 1/16WR119 RK73HB1J182J CHIP R 1.8K J 1/16W
R120 RK73HB1J272J CHIP R 2.7K J 1/16WR122 RK73HB1J272J CHIP R 2.7K J 1/16WR123 RK73HB1J182J CHIP R 1.8K J 1/16WR124 RK73HB1J332J CHIP R 3.3K J 1/16WR125 RK73HB1J561J CHIP R 560 J 1/16W
R126 RK73HB1J273J CHIP R 27K J 1/16WR127 RK73HB1J470J CHIP R 47 J 1/16WR128 RK73HB1J332J CHIP R 3.3K J 1/16WR130 RK73HB1J101J CHIP R 100 J 1/16WR131 RK73HB1J334J CHIP R 330K J 1/16W
R132 RK73HB1J222J CHIP R 2.2K J 1/16WR133 RK73HB1J102J CHIP R 1.0K J 1/16WR134 RK73HB1J394J CHIP R 390K J 1/16WR135 RK73HB1J474J CHIP R 470K J 1/16WR137 RK73HB1J472J CHIP R 4.7K J 1/16W
R139 RK73HB1J472J CHIP R 4.7K J 1/16WR140 RK73HB1J103J CHIP R 10K J 1/16WR141,142 RK73HB1J102J CHIP R 1.0K J 1/16WR143 RK73HB1J273J CHIP R 27K J 1/16WR144 R92-1368-05 CHIP R 0 OHM
R145,146 RK73HB1J472J CHIP R 4.7K J 1/16WR147 RK73HB1J103J CHIP R 10K J 1/16WR148 RK73HB1J562J CHIP R 5.6K J 1/16WR151 RK73HB1J122J CHIP R 1.2K J 1/16WR152 RK73HB1J222J CHIP R 2.2K J 1/16W
R153 RK73HB1J102J CHIP R 1.0K J 1/16WR154 RK73HB1J472J CHIP R 4.7K J 1/16WR155,156 RK73HB1J104J CHIP R 100K J 1/16WR157,158 RK73HB1J334J CHIP R 330K J 1/16WR159 RK73HB1J124J CHIP R 120K J 1/16W
R160 RK73HB1J472J CHIP R 4.7K J 1/16WR161 RK73HB1J182J CHIP R 1.8K J 1/16WR162 RK73HB1J274J CHIP R 270K J 1/16WR163 RK73HB1J474J CHIP R 470K J 1/16WR164 RK73HB1J473J CHIP R 47K J 1/16W
TH-K4AT/K4EPARTS LIST
21
TX-RX UNIT (X57-675X-XX)
DestinationRef. No. Parts No. DescriptionAddressNewparts DestinationRef. No. Parts No. DescriptionAddress
Newparts
E : TH-K4E M2 : TH-K4AT
R165,166 RK73HB1J824J CHIP R 820K J 1/16WR167,168 RK73HB1J184J CHIP R 180K J 1/16WR170 ∗ RK73HH1J563D RESISTOR 56K D 1/16WR171 ∗ RK73HH1J393D RESISTOR 39K D 1/16WR172 RK73HB1J103J CHIP R 10K J 1/16W
R173 RK73HB1J153J CHIP R 15K J 1/16WR174 RK73HB1J564J CHIP R 560K J 1/16WR175 RK73HB1J222J CHIP R 2.2K J 1/16WR176 RK73HB1J824J CHIP R 820K J 1/16WR177 RK73HB1J103J CHIP R 10K J 1/16W
R178 R92-1368-05 CHIP R 0 OHMR179 RK73HB1J224J CHIP R 220K J 1/16WR180 RK73HB1J393J CHIP R 39K J 1/16WR181 RK73HB1J471J CHIP R 470 J 1/16WR182 RK73HB1J102J CHIP R 1.0K J 1/16W
R183 RK73HB1J333J CHIP R 33K J 1/16WR185 RK73HB1J274J CHIP R 270K J 1/16WR186 RK73HB1J683J CHIP R 68K J 1/16WR188 RK73HB1J470J CHIP R 47 J 1/16WR189 R92-1368-05 CHIP R 0 OHM
R190,191 RK73HB1J473J CHIP R 47K J 1/16WR192 RK73HB1J471J CHIP R 470 J 1/16WR193 RK73HB1J182J CHIP R 1.8K J 1/16WR194 RK73HB1J103J CHIP R 10K J 1/16WR195 RK73HB1J101J CHIP R 100 J 1/16W
R196 RK73HB1J103J CHIP R 10K J 1/16WR197 RK73HB1J101J CHIP R 100 J 1/16WR198 RK73HB1J103J CHIP R 10K J 1/16WR199 RK73HB1J102J CHIP R 1.0K J 1/16WR200 RK73HB1J103J CHIP R 10K J 1/16W
R201 RK73HB1J472J CHIP R 4.7K J 1/16WR202 RK73HB1J473J CHIP R 47K J 1/16WR203 RK73HB1J474J CHIP R 470K J 1/16WR204 RK73HB1J184J CHIP R 180K J 1/16WR205 RK73HB1J101J CHIP R 100 J 1/16W
R206 RK73HB1J150J CHIP R 15 J 1/16WR207 RK73HB1J102J CHIP R 1.0K J 1/16WR208 RK73HB1J100J CHIP R 10 J 1/16WR209 RK73HB1J104J CHIP R 100K J 1/16WR210 RK73FB2A120J CHIP R 12 J 1/10W
R211 RK73HB1J474J CHIP R 470K J 1/16WR212 RK73HB1J103J CHIP R 10K J 1/16WR213 RK73HB1J223J CHIP R 22K J 1/16WR214 RK73HB1J103J CHIP R 10K J 1/16WR215 RK73HB1J474J CHIP R 470K J 1/16W
R216 RK73HB1J103J CHIP R 10K J 1/16WR217 RK73HB1J821J CHIP R 820 J 1/16WR218 R92-1368-05 CHIP R 0 OHMR223 RK73HB1J104J CHIP R 100K J 1/16WR226 RK73HB1J221J CHIP R 220 J 1/16W
R227 RK73HB1J101J CHIP R 100 J 1/16WR230 RK73HB1J221J CHIP R 220 J 1/16W M2R231 RK73HB1J151J CHIP R 150 J 1/16WR234 RK73HB1J183J CHIP R 18K J 1/16WR235,236 RK73HB1J102J CHIP R 1.0K J 1/16W
R237 RK73HB1J104J CHIP R 100K J 1/16WR238,239 RK73HB1J102J CHIP R 1.0K J 1/16WR240 RK73HB1J104J CHIP R 100K J 1/16WR241-243 RK73HB1J334J CHIP R 330K J 1/16WR244 R92-1252-05 CHIP R 0 OHM J 1/16W
R246 RK73HB1J392J CHIP R 3.9K J 1/16WR248 RK73HB1J392J CHIP R 3.9K J 1/16WR252 RK73HB1J104J CHIP R 100K J 1/16WR253,254 RK73HB1J102J CHIP R 1.0K J 1/16WR255 R92-1368-05 CHIP R 0 OHM
R256 RK73HB1J102J CHIP R 1.0K J 1/16WR263 RK73HB1J103J CHIP R 10K J 1/16WR271 RK73HB1J120J CHIP R 12 J 1/16WR272 RK73HB1J472J CHIP R 4.7K J 1/16WR273 RK73HB1J102J CHIP R 1.0K J 1/16W
R275-277 RK73HB1J473J CHIP R 47K J 1/16WR282,283 R92-1368-05 CHIP R 0 OHMR285,286 R92-1368-05 CHIP R 0 OHMR289 R92-1368-05 CHIP R 0 OHMR310 RK73HB1J392J CHIP R 3.9K J 1/16W
R312 RK73HB1J472J CHIP R 4.7K J 1/16WR313 RK73HB1J332J CHIP R 3.3K J 1/16WR318 RK73HB1J102J CHIP R 1.0K J 1/16WR323 RK73HB1J472J CHIP R 4.7K J 1/16WR324,325 RK73HB1J473J CHIP R 47K J 1/16W
R326 R92-1368-05 CHIP R 0 OHMR328 RK73HB1J474J CHIP R 470K J 1/16WR330 RK73HB1J471J CHIP R 470 J 1/16WR332 RK73FB2A150J CHIP R 15 J 1/10WR335 RK73HB1J102J CHIP R 1.0K J 1/16W
R336 RK73HB1J221J CHIP R 220 J 1/16WR337 RK73HB1J471J CHIP R 470 J 1/16WR342,343 R92-1252-05 CHIP R 0 OHM J 1/16WR344 RK73HB1J470J CHIP R 47 J 1/16WR346 RK73HB1J101J CHIP R 100 J 1/16W
R347 RK73HB1J151J CHIP R 150 J 1/16WR348 RK73HB1J680J CHIP R 68 J 1/16WR351 RK73HB1J221J CHIP R 220 J 1/16WR352,353 R92-1368-05 CHIP R 0 OHMR354 RK73HB1J333J CHIP R 33K J 1/16W
R355 R92-1368-05 CHIP R 0 OHMVR1 R32-0658-05 SEMI FIXED VARIABLE RESISTOR(100K)VR5,6 R32-0668-05 SEMI FIXED VARIABLE RESISTOR(50K)
S7 ∗ S70-0485-05 TACT SWITCH (PTT)
MIC1 T91-0580-05 MIC ELEMENT
D1-4 HVC376B VARIABLE CAPACITANCE DIODED5 HSC277 DIODED6 1SV278 VARIABLE CAPACITANCE DIODED7 MA2S111 DIODED8,9 HSC277 DIODE
D10-13 HVC131 DIODED14 RB521-S30 DIODED15 MA8039 ZENER DIODED16 MA2S111 DIODED18-21 1SV305 VARIABLE CAPACITANCE DIODE
D22 1SS361 DIODED24 MA742 DIODED25 MA2S111 DIODED26 1SS388 DIODED27 RB706F-40 DIODE
D30 RB521S-30 DIODED31 DA221 DIODED32,33 RB051L-40 DIODE
TH-K4AT/K4EPARTS LIST
22
TX-RX UNIT (X57-675X-XX)
DestinationRef. No. Parts No. DescriptionAddressNewparts DestinationRef. No. Parts No. DescriptionAddress
Newparts
E : TH-K4E M2 : TH-K4AT
D34 ∗ MAZS0270H ZENER DIODED35,36 RB521S-30 DIODED60-62 MA2S111 DIODE ED61 MA2S111 DIODE M2D63-65 MA2S111 DIODE M2
D64,65 MA2S111 DIODE ED69-73 MA2S111 DIODED74 HSM88AS DIODED79,80 DA221 DIODED81 RB521S-30 DIODE
IC1 LMX2316TMX MOS ICIC2 NJM2904V MOS ICIC3 TA31136FN MOS ICIC4 ∗ XC6202PB52FR MOS ICIC5 NJM2107F MOS IC
IC6 TA7368F MOS ICIC8 ∗ 90522BPFFG139 MPUIC9 ∗ TK11250CM MOS ICIC10 ∗ S-80844CNNBB85 MOS ICIC11 ∗ S-80930CNNBG80 MOS IC
IC12 ∗ TK11250CUCB MOS ICIC15 AT25160N10SI27 ROM ICIC16,17 NJM2904V MOS ICQ1 2SK508NV(52K) FETQ2 ∗ 2SC5488 TRANSISTOR
Q3 2SK1830 FETQ4 2SC4617(R) TRANSISTORQ5,6 ∗ 2SC5488 TRANSISTORQ9 ∗ 2SC5488 TRANSISTORQ10 2SC4926YD TRANSISTOR
Q11 2SK2596 FETQ12 2SK3476 FETQ13 2SK1830 FETQ14 ∗ RN4902 TRANSISTORQ15 2SC4617(R) TRANSISTOR
Q16,17 3SK318 FETQ20 2SK1830 FETQ21 2SC4617(R) TRANSISTORQ22 ∗ RN2105 TRANSISTORQ23 KTC4082 TRANSISTOR
Q24 ∗ 2SC5488 TRANSISTORQ27 2SK1830 FETQ29 2SC4919 TRANSISTORQ30 2SC4617(R) TRANSISTORQ31 2SK1830 FET
Q33 2SB1184(Q,R) TRANSISTORQ34,35 2SK1830 FETQ36 2SJ347 FETQ37 2SB1184(Q,R) TRANSISTORQ38 2SC4617(R) TRANSISTOR
Q41 ∗ RN2105 TRANSISTORQ47 RN1701 TRANSISTORQ50 2SK1830 FETQ51 ∗ RN4902 TRANSISTORQ52 ∗ RN1107 TRANSISTOR
Q53 RN2701 TRANSISTORQ55 ∗ CPH3317 FETQ56 ∗ CPH3417 FETQ57 ∗ RN2105 TRANSISTORQ58 2SK1830 FET
TH1 ∗ B57331V2103J THERMISTORTH2-4 B57331V2104J THERMISTOR
TH-K4AT/K4E
23
EXPLODED VIEW (TH-K4AT)
Parts with the exploded numbers larger than 700 are not supplied.
A B
1
2
3
2
7C
B34
35
6
40
16D
DD
29
10
8
9
15
201817
36
37
D
TX-RX Unit (B/3)
TX-RX Unit (C/3)
TX-RX Unit (A/3)
Dx2D
D EEx2D
Dx2
D
2333
39
28
14
22
Ax2
1321
E
E
54
12701. STICKER
Fx2
1
Gx2
A : N09-1492-05B : N14-0569-04C : N14-0573-04D : N79-2035-46E : N79-2040-45F : N82-2007-46G : N09-2433-05
31
44
TH-K4AT/K4E
24 Parts with the exploded numbers larger than 700 are not supplied.
EXPLODED VIEW (TH-K4E)C D
1
2
3
3
7C
B34
35
6
40
16D
DD
29
10
8
9
15
201819
38
37
D
TX-RX Unit (B/3)
TX-RX Unit (C/3)
TX-RX Unit (A/3)
DD D
2333
39
28
14
22
1321
E
E
54
12
A : N09-1492-05B : N14-0569-04C : N14-0573-04D : N79-2035-46E : N79-2040-45F : N82-2007-46G : N09-2433-05
31
Dx2EEx2
D
Dx2
Ax2
701. STICKER
Fx2
Gx2
44
TH-K4AT/K4E
25
E F
1
2
3
703. PAMPHLET
11.INSTRUCTION MANUAL(B62-1696-00)(B62-1697-00)(B62-1699-00)(B62-1702-00)(B62-1757-00)(B62-1758-00)
41.HELICAL ANTENNA(T90-1019-25)42.CHARGER (230V/13.8V)
(W08-0959-05)
30. BELT HOOK ASSY(J29-0709-04)
32.HANDSTRAP(J69-0342-05)
24.ITEM CARTON CASE(H52-1964-02)
705. UK PLUG ATTACHMENT
26.PACKING FIXTURE(H12-3146-01)
704. WARRANTY CARD
PACKING (TH-K4E)
Parts with the exploded numbers larger than 700 are not supplied.
702. PAMPHLET (R & TTE)
43.BATTERY ASSY(7.2V/1100mAh)(W09-0991-05)
TH-K4AT/K4E
26
PACKING (TH-K4AT)
Parts with the exploded numbers larger than 700 are not supplied.
G H
1
2
3
11.INSTRUCTION MANUAL(B62-1695-00)(B62-1696-00)
703. PAMPHLET
25.ITEM CARTON CASE(H52-1965-12)41.HELICAL ANTENNA
(T90-1019-25)
32.HANDSTRAP(J69-0342-05)
27.PACKING FIXTURE(H12-3147-03)
30.BELT HOOK ASSY(J29-0709-04)
1.CABINET ASSY(BATTERY CASE)(A02-3817-02)
TH-K4AT/K4E
27
ADJUSTMENT
Single Tone Mode
This mode is used to check the DTMF deviation.
Operation
16key (M2 type)
1. Press the [PTT] key on the transceiver to switch to thetransmission mode.
2. Press the [MONI] key to enter the single tone mode.3. Press any key from [1] to [8] keys to transmit a single tone.
The single tone is consisting of eight frequencies.[1] 697Hz[2] 770Hz[3] 852Hz[4] 941Hz[5] 1209Hz[6] 1336Hz[7] 1477Hz[8] 1633Hz
4. When the [MONI] key is pressed again during thetransmission, the transceiver switches to the receptionmode, the single tone mode turns OFF.
4key (E type)
1. Press the [PTT] key on the transceiver to switch to thetransmission mode.
2. Press the [MONI] key to enter the single tone mode.3. When the [VFO] key is pressed during the transmission, a
DTMF “D” dual tone (combination of 1633 Hz and 941 Hzfrequencies) is transmitted.
4. When the [MR] key is pressed during the transmission,single-tone 1633 Hz is transmitted.
5. When the [MONI] key is pressed again during thetransmission, the transceiver switch to the reception mode,the single tone mode is turned OFF.
• The single tone mode can be enabled only during thetransmission.
• When DTMF memory is transmitted in the single tonemode, the single tone mode turns OFF.
Adjustment Mode
This mode is used to replace or readjust the IC15 (EEPROM).Adjust the following adjustment items after setting the
transceiver to “Adjustment Mode”.
Adjustment Items
A. Overvoltage warning reference voltage (14.8V [DC IN])B. Battery terminal reference voltage (7.5 V [Battery terminal])C. Squelch (SQL1, SQL2)D. S-meter (Two segments in S-meter light, all segments in S-
meter light)E. RX BPF (Lower limit frequency, center frequency, upper
limit frequency)F. 7.5V TX H power (Lower limit frequency, center frequency,
upper limit frequency)
G. 7.5V TX M power (Lower limit frequency, center frequency,upper limit frequency)
H. 7.5V TX L power (Lower limit frequency, center frequency,upper limit frequency)
I. 13.8V TX H power (Lower limit frequency, center frequency,upper limit frequency)
J. 13.8V TX M power (Lower limit frequency, center frequency,upper limit frequency)
K. 13.8V TX L power (Lower limit frequency, center frequency,upper limit frequency)
L. DCS modulation balanceM.Tone deviation (Lower limit frequency, center frequency,
upper limit frequency)N. DCS deviation (Lower limit frequency, center frequency,
upper limit frequency)O. VOX sensitivity (Level 1, level 9)
Operation in Adjustment Mode
1. Turn the transceiver ON.2. Set the tone frequency to 151.4 Hz and the DCS code to
023 in Menu Mode to adjust tone and DCS modulation.3. Set Adjustment Mode by shorting two lands (SET) on the
component side of the TX-RX unit (A/3).
4. When the Adjustment Mode is set, the “Overvoltagewarning reference voltage (14.8V [DC IN])” adjustment itemis displayed. (The “ ” icon on the upper side of the LCDblinks while the transceiver is in the Adjustment Mode.)The current adjustment value is displayed at the lower digitsof the frequency display, and the value stored in theEEPROM is displayed on the memory channel numberdisplay.
5. The functions of transceiver keys in Adjustment Mode areas follows:
Short these two lands
SET
Adjustment item
Blink
The value stored in theEEPROM. (00-FE)
Current adjustmentvalue (00-FE)
TH-K4AT/K4E
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6. To exit the Adjustment Mode, turn the transceiver OFF.Note:
• When you press [LAMP] or [MONI] key, ensure the bossesof rubber keys align with the LAMP and MONI contacts ofthe PTT PCB (C/3).
• In the Adjustment Mode, Transmission and Receptionfrequencies becomes extensive.
A. Overvoltage warning reference voltage (14.8V [DC IN])
(1) Press the [LAMP] or [MONI] key on the transceiver to display“DC” on the LCD.The current voltage value is displayed at the lower digits ofthe frequency display, and the value stored in the EEPROMis displayed on the memory channel number display.
(2) Press the [MENU] key to write the current voltage valueinto the EEPROM.
B. Battery terminal reference voltage (7.5 V [Battery
terminal])
(1) Press the [LAMP] or [MONI] key on the transceiver to display“BAT” on the LCD.Press the [F] key and then the [PTT] key repeatedly to turnthe “ ” icon ON. The current voltage value is displayed atthe lower digits of the frequency display, and the valuestored in the EEPROM is displayed on the memory channelnumber display.
(2) Press the [PTT] key to enable the transmit mode.(3) Adjust the output voltage from DC power supply until the
voltage at the battery terminal becomes 7.5V while thetransceiver is transmitting.
(4) Press the [MENU] key to write the current voltage valueinto the EEPROM.
C. Squelch (SQL1, SQL2)
1Squelch (SQL1)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“SQ1” on the LCD.The detected DC voltage value to the current noise level isdisplayed at the lower digits of the frequency display, andthe value stored in the EEPROM is displayed on the memorychannel number display.
(2) Press the [MENU] key to write the current noise level valueinto the EEPROM.
2Squelch (SQL2)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“SQ2” on the LCD.
(2) Press the [MENU] key to write the current noise level valueinto the EEPROM.
Key name
PTT
LAMP
MONI
MENU
F
VFO
MR
CALL
Encoder
ADJUSTMENT
[key]
Transmit while this key is held down.Changes adjustment items. (Forward)When this key is pressed on the frequency display, it switches to the adjustment display.Changes adjustment items. (Back)When this key is pressed on the frequency display, it switches to the adjustment display.Write adjustment values (adjustment display)Sound error tone (frequency display)Function mode/MHz mode ONVFO modeWhen this key is pressed on the adjustment display, it switches to the frequency display.Memory modeWhen this key is pressed on the adjustment display, it switches to the frequency display.Switch between frequency display and adjustment display.Each time this key is pressed, the LCD switches between the frequency display andadjustment display.Increase or decrease adjustment values (00 - FE). (adjustment display)Increase or decrease frequency and memory channel number. (frequency display)
[F] key → [key]
Selecting a TX power (High/Mid/Low)
Lamp always ON
Squelch level setting mode
-
Function mode/MHz mode OFF
M→V (Memory shift)
M.IN (Memory registration)
-
Increase or decrease frequency (1MHzstep). (frequency display)
TH-K4AT/K4E
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D. S-meter (Two segments in S-meter light, all segments
in S-meter light)
1S-meter (Two segments in S-meter light)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“S1” on the LCD.The current RSSI level value is displayed at the lower digitsof the frequency display, and the value stored in theEEPROM is displayed on the memory channel numberdisplay.
(2) Press the [MENU] key to write the current RSSI level valueinto the EEPROM.
2S-meter (All segments in S-meter light)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“S9” on the LCD.
(2) Press the [MENU] key to write the current RSSI level valueinto the EEPROM.
E. RX BPF (Lower limit frequency, center frequency, upper
limit frequency)
1RX BPF (Lower limit frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“BPL” on the LCD.The current BPF tuning value is displayed at the lower digitsof the frequency display, and the value stored in theEEPROM is displayed on the memory channel numberdisplay.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the lower limit frequency onthe LCD.
(4) Press the [CALL] key to switch to the adjustment display.(5) Turn the encoder to change the current BPF tuning value
and adjust RX BPF.(6) Press the [MENU] key to write the current BPF tuning value
into the EEPROM.
2RX BPF (Center frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“BPC” on the LCD.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the center frequency on theLCD.
(4) Repeat steps (4) to (6) of “1RX BPF (Lower limitfrequency)” described on page 29.
3RX BPF (Upper limit frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“BPH” on the LCD.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the upper frequency on theLCD.
(4) Repeat steps (4) to (6) of “1RX BPF (Lower limitfrequency)” described on page 29.
F. 7.5V TX H power (Lower limit frequency, center
frequency, upper limit frequency)
17.5V TX H power (Lower limit frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7L” on the LCD.In this case, the “ ” icon appears.The current APC value is displayed at the lower digits ofthe frequency display, and the value stored in the EEPROMis displayed on the memory channel number display.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the lower limit frequency onthe LCD.
(4) Press the [CALL] key to switch to the adjustment display.(5) Press the [PTT] key to enable the transmit mode.(6) Adjust the output voltage from DC power supply until the
voltage at the battery terminal becomes 7.5V while thetransceiver is transmitting.
(7) Turn the encoder to change the current APC value and adjustthe transmission power.
ADJUSTMENT
TH-K4AT/K4E
30
(8) Press the [MENU] key to write the current APC value intothe EEPROM.
27.5V TX H power (Center frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7C” on the LCD.In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the center frequency on theLCD.
(4) Repeat steps (4) to (8) of “17.5V TX H power (Lower limitfrequency)” described on page 29.
37.5V TX H power (Upper limit frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7H” on the LCD.In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the upper limit frequency onthe LCD.
(4) Repeat steps (4) to (8) of “17.5V TX H power (Lower limitfrequency)” described on page 29.
G. 7.5V TX M power (Lower limit frequency, center
frequency, upper limit frequency)
17.5V TX M power (Lower limit frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7L” on the LCD.In this case, the “ ” icon appears.The current APC value is displayed at the lower digits ofthe frequency display, and the value stored in the EEPROMis displayed on the memory channel number display.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the lower limit frequency onthe LCD.
(4) Press the [CALL] key to switch to the adjustment display.
(5) Press the [PTT] key to enable the transmit mode.(6) Adjust the output voltage from DC power supply until the
voltage at the battery terminal becomes 7.5V while thetransceiver is transmitting.
(7) Turn the encoder to change the current APC value and adjustthe transmission power.
(8) Press the [MENU] key to write the current APC value intothe EEPROM.
27.5V TX M power (Center frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7C” on the LCD.In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the center frequency on theLCD.
(4) Repeat steps (4) to (8) of “17.5V TX M power (Lower limitfrequency)” described on page 30.
37.5VTX M power (Upper limit frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7H” on the LCD.In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display upper limit frequency on theLCD.
(4) Repeat steps (4) to (8) of “17.5V TX M power (Lower limitfrequency)” described on page 30.
H. 7.5V TX L power (Lower limit frequency, center
frequency, upper limit frequency)
17.5V TX L power (Lower limit frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7L” on the LCD.In this case, the “ ” icon appears.The current APC value is displayed at the lower digits ofthe frequency display, and the value stored in the EEPROMis displayed on the memory channel number display.
ADJUSTMENT
TH-K4AT/K4E
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(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the lower limit frequency onthe LCD.
(4) Press the [CALL] key to switch to the adjustment display.(5) Press the [PTT] key to enable the transmit mode.(6) Adjust the output voltage from DC power supply until the
voltage at the battery terminal becomes 7.5V while thetransceiver is transmitting.
(7) Turn the encoder to change the current APC value and adjustthe transmission power.
(8) Press the [MENU] key to write the current APC value intothe EEPROM.
27.5V TX L power (Center frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7C” on the LCD.In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the center frequency on theLCD.
(4) Repeat steps (4) to (8) of “17.5V TX L power (Lower limitfrequency)” described on page 30.
37.5V TX L power (Upper limit frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7H” on the LCD.In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the upper limit frequency onthe LCD.
(4) Repeat steps (4) to (8) of “17.5V TX L power (Lower limitfrequency)” described on page 30.
I. 13.8V TX H power (Lower limit frequency, center
frequency, upper limit frequency)
113.8V TX H power (Lower limit frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13L” on the LCD.In this case, the “ ” icon appears.
The current APC value is displayed at the lower digits ofthe frequency display, and the value stored in the EEPROMis displayed on the memory channel number display.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the lower limit frequency onthe LCD.
(4) Press the [CALL] key to switch to the adjustment display.(5) Press the [PTT] key to enable the transmit mode.(6) Turn the encoder to change the current APC value and adjust
the transmission power.(7) Press the [MENU] key to write the current APC value into
the EEPROM.
213.8V TX H power (Center frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13C” on the LCD.In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display center frequency on the LCD.(4) Repeat steps (4) to (7) of “113.8V TX H power (Lower
limit frequency)” described on page 31.
313.8V TX H power (Upper limit frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13H” on the LCD.In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display upper limit frequency on theLCD.
(4) Repeat steps (4) to (7) of “113.8V TX H power (Lowerlimit frequency)” described on page 31.
ADJUSTMENT
TH-K4AT/K4E
32
J. 13.8V TX M power (Lower limit frequency, center
frequency, upper limit frequency)
113.8V TX M power (Lower limit frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13L” on the LCD. In this case, the “ ” icon appears.The current APC value is displayed at the lower digits ofthe frequency display, and the value stored in the EEPROMis displayed on the memory channel number display.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the lower limit frequency onthe LCD.
(4) Press the [CALL] key to switch to the adjustment display.(5) Press the [PTT] key to enable the transmit mode.(6) Turn the encoder to change the current APC value and adjust
the transmission power.(7) Press the [MENU] key to write the current APC value into
the EEPROM.
213.8V TX M power (Center frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13C” on the LCD. In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the center frequency on theLCD.
(4) Repeat steps (4) to (7) of “113.8V TX M power (Lowerlimit frequency)” described on page 32.
313.8V TX M power (Upper limit frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13H” on the LCD. In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the upper limit frequency onthe LCD.
(4) Repeat steps (4) to (7) of “113.8V TX M power (Lowerlimit frequency)” described on page 32.
K. 13.8V TX L power (Lower limit frequency, center
frequency, upper limit frequency)
113.8V TX L power (Lower limit frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13L” on the LCD. In this case, the “ ” icon appears.The current APC value is displayed at the lower digits ofthe frequency display, and the value stored in the EEPROMis displayed on the memory channel number display.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the lower limit frequency onthe LCD.
(4) Press the [CALL] key to switch to the adjustment display.(5) Press the [PTT] key to enable transmit mode.(6) Turn the encoder to change the current APC value and adjust
transmission power.(7) Press the [MENU] key to write the current APC value into
the EEPROM.
213.8V TX L power (Center frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13C” on the LCD.In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the center frequency on theLCD.
(4) Repeat steps (4) to (7) of “113.8V TX L power (Lower limitfrequency)” described on page 32.
313.8V TX L power (Upper limit frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13H” on the LCD.In this case, the “ ” icon appears.
ADJUSTMENT
TH-K4AT/K4E
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(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the upper limit frequency onthe LCD.
(4) Repeat steps (4) to (7) of “113.8V TX L power (Lower limitfrequency)” described on page 32.
L. DCS modulation balance
(1) Press the [LAMP] or [MONI] key on the transceiver to display“DCS.BAL” on the LCD. Press the [F] key and then the[PTT] key repeatedly to turns the “ ” icon ON.
(2) When the [PTT] key is pressed to enable transmit mode, a100Hz square waveform is internally generated andmodulated.
(3) While observing the waveforms on the oscilloscope, turnthe semi-fixed volume (VR6) to adjust the DCS modulationwaveform to a square waveform.
(4) When the DCS modulation waveform becomes a squarewaveform, release the [PTT] key.
M.Tone deviation (Lower limit frequency, center
frequency, upper limit frequency)
1Tone deviation (Lower limit frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“DVL” on the LCD.In this case, the “ ” icon appears. Press the [F] key andthen the [PTT] key repeatedly to turn the “ ” icon ON.The current adjustment value is displayed at the lower digitsof the frequency display, and the value stored in theEEPROM is displayed on the memory channel numberdisplay.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the lower limit frequency onthe LCD.
(4) Press the [CALL] key to switch to the adjustment display.(5) When the [PTT] key is pressed to enable transmit mode, a
preset tone frequency (151.4Hz) is internally generated andmodulated.
(6) Turn the encoder to change the current adjustment valueand adjust tone deviation.
(7) Press the [MENU] key to write the current adjustment valueinto the EEPROM.
2Tone deviation (Center frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“DVC” on the LCD.In this case, the “ ” icon appears. Press the [F] key andthen the [PTT] key repeatedly to turn the “ ” icon ON.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the center frequency on theLCD.
(4) Repeat steps (4) to (7) of “1Tone deviation (Lower limitfrequency)” described on page 33.
3Tone deviation (Upper limit frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“DVH” on the LCD.In this case, the “ ” icon appears. Press the [F] key andthen the [PTT] key repeatedly to turn the “ ” icon ON.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the upper limit frequency onthe LCD.
(4) Repeat steps (4) to (7) of “1Tone deviation (Lower limitfrequency)” described on page 33.
N. DCS deviation (Lower limit frequency, center frequency,
upper limit frequency)
1DCS deviation (Lower limit frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“DVL” on the LCD.In this case, the “ ” icon appears. Press the [F] key andthen the [PTT] key repeatedly to turn the “ ” icon ON.The current adjustment value is displayed at the lower digitsof the frequency display, and the value stored in theEEPROM is displayed on the memory channel numberdisplay.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the lower limit frequency onthe LCD.
ADJUSTMENT
TH-K4AT/K4E
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ADJUSTMENT
(4) Press the [CALL] key to switch to the adjustment display.(5) When the [PTT] key is pressed to enable transmit mode, a
preset DCS code (023) is internally generated andmodulated.
(6) Turn the encoder to change the current adjustment valueand adjust DCS deviation.
(7) Press the [MENU] key to write the current adjustment valueinto the EEPROM.
2DCS deviation (Center frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“DVC” on the LCD.In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the center frequency on theLCD.
(4) Repeat steps (4) to (7) of “1DCS deviation (Lower limitfrequency)” described on page 33.
3DCS deviation (Upper limit frequency)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“DVH” on the LCD.In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the upper limit frequency onthe LCD.
(4) Repeat steps (4) to (7) of “1DCS deviation (Lower limitfrequency)” described on page 33.
O. VOX sensitivity (Level 1, level 9)
1VOX sensitivity (Level 1)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“VOX1” on the LCD.Press the [F] key and then the [PTT] key repeatedly to turnthe “ ” icon ON.The current microphone input level value is displayed atthe lower digits of the frequency display, and the valuestored in the EEPROM is displayed on the memory channelnumber display.
(2) Input a specified AG signal to microphone input.(3) Press the [MENU] key to write the current microphone input
level value into the EEPROM.
2VOX sensitivity (Level 9)(1) Press the [LAMP] or [MONI] key on the transceiver to display
“VOX9” on the LCD.(2) Input a specified AG signal to microphone input.(3) Press the [MENU] key to write the current microphone input
level value into the EEPROM.
TH-K4AT/K4E
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ADJUSTMENT
1.Setting and Connect the optional PG-2W LCD total illumination display Initial configuration displayed afterresetting DC cable to the power supply. the full-reset.
DC IN terminal voltage: 13.8V1) Total illumination display
confirmationTurn the Transceiver Power ON by pressing the power switch while the [F] key is pressed.While the [F] key is pressed, all LCD segments light.
2) Full-resettingAfter confirming that all LCD segments have lighted described in the Step 1 above, releasethe [F] key, and then press the [F] key twice while “FL.RST?” appears on the display.
2 VCO After removing 3 screws fixingLock voltage the TX-RX unit (B/3), removeCheck the TX-RX (B/3) unit from the
CN9 connector of the TX-RXunit (A/3).1) Frequency: 400.000MHz DVM TX-RX LV Check 0.7V or more
RX 2) Frequency: 469.990MHz (A/3) 4.3V or less TX TX power: Low
1) Frequency: 400.000MHz 0.7V or morePTT: ON
2) Frequency: 469.990MHz 4.3V or lessPTT: ONAfter observing the VCOlock voltage, connect theTX-RX unit (B/3) to theoriginal position.
3.TX frequency 1) TX power: Low f. counter ANT TX-RX VR1 439.990MHz ±400HzAdjust Frequency: 439.990MHz (A/3)
PTT: ON4.Overvoltage Switch to Adjustment mode
warning and carry out the operationsreference for adjustment item A.voltage (Refer to page 28)Adjust/Check 1) LCD display: DC DC power supply [MENU] Write
Frequency: 435.050MHzDC IN terminal voltage: 14.8V
To exit from the AdjustmentMode, turn the transceiverpower OFF and then ON.2) Frequency: 435.050MHz Check Alarm sound and
DC IN terminal voltage: 17.5V display “DC ERR”message.
Common Section
Item ConditionMeasurement Adjustment Specifications/
Test equipment Unit Terminal Unit Parts Method Remarks
TH-K4AT/K4E
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1.RX BPF Squelch level: 0 Adjust 1) Frequency: 435.050MHz SSG TX-RX ANT VOL Turn the VOL knob 0.63V
SSG output: –53dBm (501 uV) Oscilloscope (A/3) SP knob to obtain 0.63V AFSSG MOD: 1kHz Distortion meter output.SSG DEV: 3kHz AF V.M
Switch to Adjustment mode Dummy loadand carry out the operationsfor adjustment item E.(Refer to page 29)2) LCD display: BPL Encoder Write Max Sensitivity
Frequency: 400.050MHz [MENU]SSG: –119dBm (0.25 uV)
3) SSG: –110dBm (0.707 uV) Check 12dB SINAD ormore
4) LCD display: BPC Encoder Write Max SensitivityFrequency: 435.050MHz [MENU]SSG: –120dBm (0.22 uV)
5) SSG: –120dBm (0.22 uV) Check 12dB SINAD ormore
6) LCD display: BPH Encoder Write Max SensitivityFrequency: 469.990MHz [MENU]SSG: –121dBm (0.199 uV)
7) SSG: –113dBm (0.501uV) Check 12dB SINAD ormore
2.IF response 1) Frequency : 469.990MHz SSG Check 12dB SINAD orCheck SSG Frequency: 450.565MHz Oscilloscope less
SSG output: –53dBm (501uV) Distortion meter Note: If theSSG MOD: 1kHz specification is notSSG DEV: 3kHz satisfied, repeat theAF output: 0.63V/8Ω operations for
2) Frequency : 400.050MHz “1. RX BPFSSG Frequency: 380.625MHz Adjust”.SSG output: –53dBm (501uV)
3) Frequency : 435.000MHzSSG Frequency: 415.575MHzSSG output: –53dBm (501uV)
3.Squelch / Switch to Adjustment mode SSG ANTS-meter and carry out the operationsWrite for adjustment item C.
(Refer to page 28)1) LCD display: SQ1 [MENU] Write Note: In the
Frequency: 435.050MHz Squelch adjustSSG: –125dBm (0.126uV) ments, all 4
Squelch 2) LCD display: SQ2 [MENU] Write adjusting pointsFrequency: 435.050MHz including the S-SSG: –120dBm (0.22uV) meter must be
adjusted.
ADJUSTMENT
Receiver section
Item ConditionMeasurement Adjustment Specifications/
Test equipment Unit Terminal Unit Parts Method Remarks
TH-K4AT/K4E
37
ADJUSTMENT
Item ConditionMeasurement Adjustment Specifications/
Test equipment Unit Terminal Unit Parts Method Remarks
Switch to Adjustment modeand carry out the operationsfor adjustment item D.(Refer to page 29)
S-meter 3) LCD display: S1 SSG TX-RX ANT [MENU] WriteFrequency: 435.050MHz (A/3)SSG: –120dBm (0.22uV)
4) LCD display: S9 [MENU] WriteFrequency: 435.050MHzSSG: –105dBm (1.26uV)
4.Squelch Squelch level: 1 Check 1) Frequency: 435.050MHz SSG Check Open Squelch
SSG output: –123dBm (0.158uV) OscilloscopeSSG MOD: 1kHz Distortion meterSSG DEV: 3kHz
2) SSG: OFF Close Squelch5.S-meter 1) Frequency: 435.050MHz SSG Check Two segments
Check SSG output: –120dBm (0.22uV) in S-meter light.
2) SSG output: –105dBm (1.26uV) All segments inS-meter light.
6.Hum and 1) Frequency: 435.050MHz SSG TX-RX ANTnoise ratio SSG output: –53dBm (501uV) Oscilloscope (A/3) SPCheck SSG MOD: 1kHz Distortion meter
SSG DEV: 3kHz AF V.MAF Output: 0.63V/8ΩAF V.M = 0dB
2) SSG DEV: OFF Check –38dB or less7.AF distortion 1) Frequency: 435.050MHz Check 5% or less
Check SSG output: –53dBm (501uV)SSG MOD: 1kHzSSG DEV: 3kHzAF Output: 0.63V/8Ω
8.AF output 1) Frequency: 435.050MHz Check 400mW or moreCheck SSG output: –53dBm (501uV)
SSG MOD: 1kHzSSG DEV: 3kHzAF distortion: 10%
9.Current Squelch level: 5Drain 1) Frequency: 435.050MHz SSG Check 80mA or lessCheck SSG output: OFF Am meter
2) Frequency: 435.050MHz 400mA or lessSSG output: –53dBm (501uV)SSG MOD: 1kHzSSG DEV: 3kHzVOL knob: Max
TH-K4AT/K4E
38
ADJUSTMENT
Transmitter section
Item ConditionMeasurement Adjustment Specifications/
Test equipment Unit Terminal Unit Parts Method Remarks
1.TX powerWrite (Batteryterminal: 7.5V)
High power
Mid power
Low power
Battery terminal voltage:7.5V
Switch to Adjustment modeand carry out the operationsfor adjustment item F.(Refer to page 29)1)LCD display: P7L,
Frequency: 430.000MHzPTT: ON
2)LCD display: P7C, Frequency: 435.000MHzPTT: ON
3) LCD display: P7H, Frequency: 439.995MHz
PTT: ONSwitch to Adjustment modeand carry out the operationsfor adjustment item G.(Refer to page 30)4)LCD display: P7L,
Frequency: 430.000MHzPTT: ON
5)LCD display: P7C, Frequency: 435.000MHz PTT: ON6)LCD display: P7H, Frequency: 439.995MHz PTT: ONSwitch to Adjustment modeand carryout the operationsfor adjustment item H.(Refer to page 30)7)LCD display: P7L,
Frequency: 430.000MHzPTT: ON
8)LCD display: P7C, Frequency: 435.000MHzPTT: ON
9)LCD display: P7H, Frequency: 439.995MHzPTT: ON
DC power supplyDVM
Power meterAm meter
TX-RX(A/3)
BGND
ANT Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Write
Write
Write
Write
Write
Write
Write
Write
Write
Note: Do notuse the DC INterminal.
4.8W ±0.05W2.1A or less
1.5W ±0.05W1.4A or less
0.5W ±0.05W0.8A or less
Note: Adjust the output voltage from DC power supply until the voltage at the battery terminalbecomes 7.5V while the transceiver is transmitting.
TH-K4AT/K4E
39
ADJUSTMENT
Item ConditionMeasurement Adjustment Specifications/
Test equipment Unit Terminal Unit Parts Method Remarks
2.TX powerWrite (DC INterminal: 13.8V)
High power
Mid power
Low power
3.BatteryterminalreferencevoltageAdjust/Check
Connect the optional PG-2WDC cable to the power supply.DC IN terminal voltage: 13.8VSwitch to Adjustment modeand carry out the operationsfor adjustment item I.(Refer to page 31)1)LCD display: P13L,
Frequency: 430.000MHzPTT: ON
2)LCD display: P13C, Frequency: 435.000MHzPTT: ON
3)LCD display: P13H, Frequency: 439.995MHz PTT: ONSwitch to Adjustment modeand carry out the operationsfor adjustment item J.(Refer to page 32)4)LCD display: P13L,
Frequency: 430.000MHzPTT: ON
5)LCD display: P13C, Frequency: 435.000MHzPTT: ON
6)LCD display: P13H, Frequency: 439.995MHzPTT: ON
Switch to Adjustment modeand carry out the operationsfor adjustment item K.(Refer to page 32)7)LCD display: P13L, Frequency: 430.000MHz PTT: ON8) LCD display: P13C, Frequency: 435.000MHz PTT: ON9) LCD display: P13H, Frequency: 439.995MHz PTT: ONSwitch to Adjustment modeand carry out the operationsfor adjustment item B.(Refer to page 28)TX power: Low1)LCD display: BAT Frequency: 435.000MHz
PTT: ONBattery terminal voltage: 7.5V
DC power supplyDVM
Power meterAm meter
DC power supplyDVM
TX-RX(A/3)
DC IN
ANT
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
[MENU]LCD
Write
Write
Write
Write
Write
Write
Write
Write
Write
WriteCheck
5.0W - 5.1W2.0A or less
1.5W ±0.05W1.4A or less
0.5W ±0.05W0.8A or less
All segmentsare lighted.
(Adjust the output voltage from DC power supply until the voltage at thebattery terminal becomes 7.5V while the transceiver is transmitting.)
TH-K4AT/K4E
40
ANT
ANTMIC
LCD
VR6
VR5
Check
By tuning theVR6, adjustthe modulationwave untilif becomes thesquare wave.4.2kHzAccording to thelarger +, –.
Change the AGoutput level toobtain 3kHzdeviation.
4 to 6 seg-ments arelighted. ~
±0.1kHz
4mV - 12mV
Item ConditionMeasurement Adjustment Specifications/
Test equipment Unit Terminal Unit Parts Method Remarks
4.DCSmodulationbalance
5.MAX DEV
6.MICsensitivity
Check
To exit from the AdjustmentMode, turn the transceiverpower OFF and then ON.2)Frequency: 435.000MHz
PTT: ONBattery terminal voltage: 6.4V
Switch to Adjustment modeand carry out the operationsfor adjustment item L.(Refer to page 33)Detector: +P, –PHPF: OFF LPF: 3kHzDe-emphasis: OFFTX power: Low1)LCD display: DCS.BAL
Frequency: 435.000MHzPTT: ON
To exit from the AdjustmentMode, turn the transceiverpower OFF and then ON.MIC terminal inputAG: 1kHz/80mVDetector: +P, –PHPF: OFF LPF: 15kHzDe-emphasis: OFFTX power: Low1)Frequency: 435.000MHz PTT: ONMIC terminal inputAG: 1kHzDetector: P-P/2HPF: OFFLPF: 15kHzDe-emphasis: OFFTX power: Low1)Frequency: 435.000MHz
PTT: ON
DC power supplyDVM
Linear detectorOscilloscope
Linear detectorAGOscilloscope
TX-RX(A/3)
ADJUSTMENT
(Adjust the output voltage from DC power supply until the voltage at thebattery terminal becomes 6.4V while the transceiver is transmitting.)
TH-K4AT/K4E
41
Item ConditionMeasurement Adjustment Specifications/
Test equipment Unit Terminal Unit Parts Method Remarks
7.Tonedeviation
8.DCSdeviation
9.VOXSensitivityWrite
Switch to Adjustment modeand carry out the operationsfor adjustment item M.(Refer to page 33)Detector: P-P/2HPF: OFFLPF: 3kHzDe-emphasis: OFFTX power: Low1)LCD display: DVL,
Frequency: 430.000MHzPTT: ON
2)LCD display: DVC, Frequency: 435.000MHzPTT: ON
3)LCD display: DVH, Frequency: 439.990MHz PTT: ONSwitch to Adjustment modeand carry out the operationsfor adjustment item N.(Refer to page 33)Detector: +P HOLDHPF: OFFLPF: 3kHzDe-emphasis: OFFTX power: Low1)LCD display: DVL,
Frequency: 430.000MHzPTT: ON
2)LCD display: DVC, Frequency: 435.000MHzPTT: ON
3)LCD display: DVH, Frequency: 439.990MHzPTT: ON
Switch to Adjustment modeand carry out the operationsfor adjustment item O.(Refer to page 34)TX power: Low1)LCD display: VOX1
Frequency: 435.000MHzAG: 1kHz/80mV
2)LCD display: VOX9Frequency: 435.000MHzAG: 1kHz/1.5mV
Linear detector
AG
ANT
MIC
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
[MENU]
[MENU]
Write
Write
Write
Write
Write
Write
Write
Write
0.8kHz ±50Hz
0.8kHz ±50Hz
ADJUSTMENT
TX-RX(A/3)
TH-K4AT/K4E
42
Adjustment points
TX-RX unit (A/3)
Component side view
J2DC IN
J3MIC
J4SP
VR1
VR5
VR6
LV
B
LCD
ANT
BTEMP
GND
SET
TX-RX UNIT (A/3)Component side view
10. VOXOperationCheck
11. DTMFDEVCheck
12. 1750HzTone DEVCheck
(E type only)
13. ProtectionCheck
(DC INterminal: 13.8V)
To exit from the AdjustmentMode, turn the transceiverpower OFF and then ON.1)Frequency: 435.000MHz
VOX Gain: 4AG: OFF
2)AG: 1kHz/100mVDetector: P-P/2HPF: OFFLPF: 15kHzDe-emphasis: OFFTX power: Low
1)Frequency: 435.000MHz Send DTMF code “D”
Detector: P-P/2HPF: OFFLPF: 15kHzDe-emphasis: OFFTX power: Low1)Frequency: 435.000MHz
Send 1750Hz ToneTX power: High1)Frequency: 435.000MHz
ANT: OPENPTT: ON
AG
Linear detector
Am meter
Check
Check
Check
Check
Does nottransmit.
Transmits.
2.0kHz - 4.2kHz
2.5kHz - 4.5kHz
2.4A or less
Item ConditionMeasurement Adjustment Specifications/
Test equipment Unit Terminal Unit Parts Method Remarks
MIC
ANT
TX-RX(A/3)
ADJUSTMENT
Note: For details of sending DTMF code “D”,refer to the “Single Tone Mode” on page 27.
VR1 : TX frequencyVR5 : MAX DEVVR6 : DCS modulation valanceLV : VCO lock voltage terminal
TH-K4AT/K4E
43
TERMINAL FUNCTION
CN1 1 GND GND2 Vol-OUT RX audio volume output3 Vol-IN RX audio volume input4 EN2 Encoder 25 GND GND6 EN1 Encoder 1
CN2 1 SPK Internal speaker audio2 SPG Audio ground
CN6, 1 PTT PTTCN7 2 KIN4 Key matrix input
3 KYO2 Key matrix output (MONI key)4 KYO1 Key matrix output (LAMP key)5 BL LCD backlight control6 GND GND
CN8, 1 KIN1 Key matrix inputCN9 2 IM Internal microphone
3 KYO3 Key matrix output4 8M 8V power supply5 KIN4 Key matrix input6 MIG Microphone ground7 LAMP Key illumination control8 GND GND9 KYO0 Key matrix output10 KIN2 Key matrix input11 KYO1 Key matrix output12 KIN0 Key matrix input13 KYO2 Key matrix output14 KIN3 Key matrix input
CN No. Pin No. Pin Name Function
TX-RX UNIT (A/3) : TX-RX↔VOL/ENC
TX-RX UNIT (A/3) : TX-RX↔Internal speaker
TX-RX UNIT (A/3) : TX-RX↔TX-RX UNIT (B/3) : 10KEY
TX-RX UNIT (A/3) : TX-RX↔TX-RX UNIT (C/3) : PTT
JIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C20
C21
C22
R210
C24
R211
C25
R212
C26
R213
C27
R214
R215
C29
1
134 6
13K
YO
2K
YO
1K
YO
0LA
MP
KIN
4K
YO
3K
IN1
KIN
3K
IN0
KIN
2G
ND
MIG
8MIM
142
R216
R218
C30
C33
C34
C35
C37
C38
C40
C41
C42
C43
C44
R231
C45
C46
C200
C50
C51 C
52
C203
R172C204
C54
C55
C56
C57
C211 C212
C213
Q12
R252
C66
Q13
Q14
134 6
R255
Q15
C70
Q20
D
G
G
S
S D
Q21Q22
Q23
Q24
C78
G D
S
S
Q27DS
G
R272
C86
Q34
Q35
Q36
C1 Q51
D7
C271
C272
F1F3
XF1
TH1
TH2
TH3
J2DC IN
D14
D15
D16
R115
R116
R117
R118R119
R120
R122
R123
R124
R125
R126
R127
R128
D31
R323
R324
R131
R132
R133
R134
R135
R137
R139
R330
R332
R140
C105
R141
C106
R142
C107
R143
C108
R144
C109
R145
R146
R147
R148
C110
C111
IC1
C112
IC2
1
45
8
C113
IC3
C114
C115
R151
C116
R152
C117
R153
C118
R154
R157
R158
D60
R159
D61
D62
D63
D64
R351
D65
C318
1 5
2 6G
ND
KY
O1
KIN
4
BL
KY
O2
PT
T
C125
C126
R18
C128
C511
R19
R165
C512
R166
R167
R168
D70
D71
D69
D72
R20
R21
L45
L46
R24
R1
C328
R171
Q4
Q6
D81
C331
L53
R30
R31
R32
R33
L58
R34
R35
C339
R36
R37
R38
R188
R189
L64
L67
C349
VR1
VR
5
MA
X D
EV
VR6
C351
C356
C166
C167
R58
C168
C169
C170
C171
C172
C173
C174
C175
C176
C370
C371
C372
R70
C180
R71
R72
C182
C183
R74
R75
R76
C186
R77
C187
R78
C188
R79
C189
R80
C190
R81
C191
R82C
192
C193
R83R
84
C194
R85
C195
R86
C196
C197
C198
R90
CN6
X1
CN9
CP
1
CP
2
IC17
+
+
+
+
+
LV
BB
TE
MP
GN
D
1
8 9
16
+
1
8 9
16
+
+
DCS BAL
+
+
FREQ
DS
G
DS
G
DS G
1
4 5
8
SET
44
TH-K4AT/K4E PC BOARD
TX-RX UNIT (X57-675X-XX) (A/3) 0-21 : M2 2-71 : E
Component side view (J72-0884-19 A/3)
Ref. No. Address
IC1 4D
IC2 8F
IC3 9B
IC6 6M
IC9 9P
IC10 6P
IC11 6Q
IC15 7P
Ref. No. Address
IC17 9I
Q4 4C
Q6 3E
Q12 5J
Q13 7F
Q14 9E
Q15 5E
Q20 10E
Ref. No. Address
Q21 10D
Q22 10D
Q23 6B
Q24 8D
Q27 6H
Q31 6L
Q34 9F
Q35 10F
Ref. No. Address
Q36 10E
Q37 8L
Q38 7K
Q41 9Q
Q47 7S
Q51 4H
Q53 9Q
Q55 5P
Ref. No. Address
Q56 7L
Q57 8Q
D7 4B
D14 8E
D15 9D
D16 4D
D25 6K
D26 7L
Ref. No. Address
D31 9F
D34 7L
D40 7S
D41 7S
D60 3H
D61 3H
D62 3H
D63 3H
Ref. No. Address
D64 4H
D65 4H
D69 3G
D70 3H
D71 3H
D72 3G
D81 10G
J K L M N O P Q R S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R217
R223
R226
R227
R234
R236
R237
R238
C203
R172204
R242
R243
R246 R248
212
Q12
R252
R263
D
S
S Q31
C86
R276
Q37
B
E
C
Q38
Q41
C246
C247
C248
C249
Q471 3
45C250
C252
C253
C255
C256
C257
Q53
C258
Q55
COM3
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG3136
COM01
COM1
COM2
Q56
G
G
G
S
S
S
D
D
D
Q57
C279
C280
C290
C291TH1
J3MIC
J4SP
D25
D26
D34
CP
34C
P35
R328
D40
D41
R335
C300
C302
C304
C305
C306
C307
C308
C309
IC6
156 10
C118
IC9
1 346
R157
C310
R158
C311
R159
C312
C313
C317
C318
1 5
2 6G
ND
KY
O1
KIN
4
BL
KY
O2
PT
T
R355
C319
65
C512
R170
R171
L49
–+
C331
R244
L63
C344
C345
C346
C347
C348
C351
C354
C355
C359
C360
C368
R86
CN
2IN
T. SP
CN6
R202
R203
R204
IC101
1
23
4
4
1
34
5
5
8
R205
IC11
123 4
R206
R207
R208
R209
IC15
+
5
8
+
+
+
POWER
+
J72-0884-19 (A/3)
LCD
ANT
45
Component side
Foil side
Layer 1Layer 2Layer 3Layer 4
TX-RX UNIT (X57-675X-XX) (A/3) 0-21 : M2 2-71 : E
Component side view (J72-0884-19 A/3)
PC BOARD TH-K4AT/K4E
JIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R235
R239 C297
R240R241
C206
C20
R253
R254
R256
Q17
1
23
4
C223
C224
C226
C227
C228
C229
Q29
C230
C231
C82
C83
Q30
C84
C235
1 6E
NC
AG
ND
EN
CB
VO
L INV
OL O
UT
GN
D
C236
C237
C238
C88
C239
C89
R275
R277
C240
C90
C241
C91
C242
C93
C94
C95
C96
R282
C97
R283
C98
C99
R285
R286
R289
Q52
C281
C283
C284
C285
C286
C293 C294
C295
C298
C299
TH
4
CN
10
R1
R103
R104
CN15
CN
17
R107
D10R108
D11
R109
D12
D13
R110
R111
D20
D21
D22
D24
R310
R312
R313
D27
R318
CP
31
D36
CP32 CP33
R325
R326
C100
C101
C102
L16
L17
L18
L19L20L21L22
C303
L23
L25
R342
R343
1
2
3
4IC4
15
IC8
L30
C314
R352
C316
L36R353
R354
L38
R162
C510
L40
L41
D74
D79
R1D80
C330
R179C332 C335 C336
R180
R181
R182
R183
R185
C152
C153
L68
R190
R191
R192
C156
R193
R194
C158
R195
C159
R196
R197
R198
R199
C160
C161
C162
C357
C163
C164
C358
C165
C361
C365
R186
R61
C366
R62
C367
C87
CN1
X3
R200
R201
IC12
1
46
3
+
1120
3031 60
61
90
91
+
J72-0884-19 (A/3)
46
TH-K4AT/K4E PC BOARD
TX-RX UNIT (X57-675X-XX) (A/3) 0-21 : M2 2-71 : E
Foil side view (J72-0884-19 A/3)
Ref. No. Address
IC4 10E
IC5 10K
IC8 7E
IC12 6B
IC16 8L
Q1 4P
Q2 3O
Q3 3P
Ref. No. Address
Q5 3N
Q9 4N
Q10 5N
Q11 6M
Q16 4L
Q17 3J
Q29 10J
Q30 8J
Ref. No. Address
Q33 9N
Q52 7G
Q58 6K
D1 4R
D2 3R
D3 3R
D4 3R
D5 2Q
Ref. No. Address
D6 3Q
D8 4M
D9 3M
D10 3G
D11 4G
D12 3F
D13 3G
D18 2L
Ref. No. Address
D19 2L
D20 3I
D21 3H
D22 10J
D24 8I
D27 9J
D30 8N
D32 8M
Ref. No. Address
D33 8N
D35 7N
D36 9D
D73 7N
D74 3F
D79 11I
D80 11I
J K L M N O P Q R S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C201
C202
C205
C206
C207
C208
C209
C210
C61
Q10
1
2 3
4
C64
Q11
GSD
C65
C67
C68
C219
Q16
1
23
4
Q17
1
23
4
C220
C221
C71
C222
C72
C223
C73
C224
C225
C75
C226
C76
C77
C227
C228
229
Q29
C231
C83
Q30
C84
R271
Q33
E
B
C
R273
C90
C2
C3
C4
C5
C6
C7
C8C
9
D1
D2
D3
D4
Q58
DS
G
D5
D6
D8
D9
C270
C276
C282
CN
10
R100R101
R103
R104
R107
R109
D18
D19
D27
L1
L2
L3
L4
L5
L6
D30
L8
L9
D32
D33
D35
R130
L10
L11
CD
1
L13
L14
L15
L24
L25L26
L27
R344
L28
L29
IC5
1 345
R346
R347
R348
R155 R156
CF1
L32
R10
L34
R11
L35
R12
L36
C124
R14
R160
R15
R161
R16
R162
R17
R163
R164
C129
C323
D73
C130
C324
C131
C132
C326
C133
C327
C134
Q1
G
S D
C135
C329
Q2C136
Q3
DSG
C137
R173
R174
C139
Q5
R175
R176
R177
L50
R178
Q9
R179
L54
C140
C141
L56
C142
C144
R180
C338
C145
R181
R182
C146
C147
R183
R4
C148
R39
R5
R6
R7
R8
R9
L65
R41
R42
C152
C153
R45
R46
C157
R47
R49
C352
C353
R50
R51
BR
52
R53
C164
C358
R54
R55R56
R59
C363
C364
R60
R62
R64
C369
C177
C178
C179
R88
R91
R92R93
R94
R95
R96
R97
R98
R99
C10
C11
C13
C14
C15
C17C18
C19
IC16
1
45
8
+
LV
47
Component side
Foil side
Layer 1Layer 2Layer 3Layer 4
TX-RX UNIT (X57-675X-XX) (A/3) 0-21 : M2 2-71 : E
Foil side view (J72-0884-19 A/3)
PC BOARD TH-K4AT/K4E
J K L M N O P Q R SIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C20
C21
C22
R210
C24
R211
C25
R212
C26
R213
C27
R214
R215
C29
1
134 6
13K
YO
2K
YO
1K
YO
0LA
MP
KIN
4K
YO
3K
IN1
KIN
3K
IN0
KIN
2G
ND
MIG
8MIM
142
R216
R217
R218
C30
C33
C34
C35
R223
C37
C38
R226
R227
C40
C41
C42
C43
C44
R231
C45
C46
R234
R236
R237
R238
C200
C50
C51 C
52
C203
R172C204
C54
C55
C56
R242
C57
R243
R246 R248
C211 C212
C213
Q12
R252
C66
Q13
Q14
134 6
R255
Q15
C70
Q20
D
G
G
S
S D
Q21Q22
Q23
R263
Q24
C78
G D
S
S
Q27DS
G
Q31
R272
C86
Q34
Q35
Q36
R276
Q37
B
E
C
Q38
Q41
C246
C247
C248
C1
C249
Q471 3
45C250
C252
C253
Q51
C255
C256
C257
Q53
C258
Q55
COM3
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG3136
COM01
COM1
COM2
Q56
G
G
G
S
S
S
D
D
D
Q57
D7
C271
C272
F1
C279
F3
C280
C290
C291
XF1
TH1
TH2
TH3
J2DC IN
J3MIC
J4SP
D14
D15
D16
R115
R116
R117
R118R119
D25
D26
R120
R122
R123
R124
R125
R126
R127
R128
D31
D34
R323
R324
CP
34
R131
CP
35
R132
R133
R134
R328
R135
R137
D40
R139
D41
R330
R332
R140
R335
C105
R141
C106
R142
C107
R143
C108
R144
C109
R145
R146
R147
C300
R148
C302
C304
C110
C305
C111
IC1C
306
C112
IC2
1
45
8
C307
C113
IC3
C308
C114
C309
C115
R151
C116
IC6
156 10
R152
C117
R153
C118
R154
IC9
1 346
R157
C310
R158
D60
C311
R159
D61
C312
D62
C313
D63
D64
R351
D65
C317
C318
1 5
2 6G
ND
KY
O1
KIN
4
BL
KY
O2
PT
T
R355
C319
C125
C126
R18
C128
C511
R19
R165
C512
R166
R167
R168
D70
D71
D69
D72
R20
R21
L45
L46
R24
R170
C328
R171
L49
–+
Q4
Q6
D81
C331
R244
L53
R30
R31
R32
R33
L58
R34
R35
C339
R36
R37
R38
R188
R189
L63
C344
L64
C345
C346
L67
C347
C348
C349
VR1
VR
5
MA
X D
EV
VR6
C351
C354
C355
C356
C359
C166
C167
R58
C168
C169
C360
C170
C171
C172
C173
C368
C174
C175
C176
C370
C371
C372
R70
C180
R71
R72
C182
C183
R74
R75
R76
C186
R77
C187
R78
C188
R79
C189
R80
C190
R81
C191
R82
C192
C193
R83R
84
C194
R85
C195
R86
C196
C197
C198
CN
2IN
T. SP
R90
CN6
X1
CN9
CP
1
CP
2
R202
R203
R204
IC101
1
23
4
4
1
34
5
5
8
R205
IC11
123 4
R206
R207
R208
R209
IC15
IC17
+
+
+
+
+
LV
BB
TE
MP
GN
D
1
8 9
16
+
1
8 9
16
+
+
DCS BAL
+
+
FREQ
DS
G
DS
G
DS G
1
4 5
8
SET
+
+
+
POWER
+
J72-0884-19 (A/3)
LCD
ANT
44 45
TH-K4AT/K4E PC BOARD
Component side
Foil side
Layer 1Layer 2Layer 3Layer 4
TX-RX UNIT (X57-675X-XX) (A/3) 0-21 : M2 2-71 : E
Component side view (J72-0884-19 A/3)
TX-RX UNIT (X57-675X-XX) (A/3) 0-21 : M2 2-71 : E
Component side view (J72-0884-19 A/3)
PC BOARD TH-K4AT/K4E
Ref. No. Address
IC1 4D
IC2 8F
IC3 9B
IC6 6M
IC9 9P
IC10 6P
IC11 6Q
IC15 7P
Ref. No. Address
IC17 9I
Q4 4C
Q6 3E
Q12 5J
Q13 7F
Q14 9E
Q15 5E
Q20 10E
Ref. No. Address
Q21 10D
Q22 10D
Q23 6B
Q24 8D
Q27 6H
Q31 6L
Q34 9F
Q35 10F
Ref. No. Address
Q36 10E
Q37 8L
Q38 7K
Q41 9Q
Q47 7S
Q51 4H
Q53 9Q
Q55 5P
Ref. No. Address
Q56 7L
Q57 8Q
D7 4B
D14 8E
D15 9D
D16 4D
D25 6K
D26 7L
Ref. No. Address
D31 9F
D34 7L
D40 7S
D41 7S
D60 3H
D61 3H
D62 3H
D63 3H
Ref. No. Address
D64 4H
D65 4H
D69 3G
D70 3H
D71 3H
D72 3G
D81 10G
J K L M N O P Q R SIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R235
R239 C297
C201
C202
R240
C205
R241
C206
C207
C208
C209
C210
C61
Q10
1
2 3
4
C64
Q11
GSD
C65
R253
C67
R254
C68
C219
Q16
1
23
4
R256
Q17
1
23
4
C220
C221
C71
C222
C72
C223
C73
C224
C225
C75
C226
C76
C77
C227
C228
C229
Q29
C230
C231
C82
C83
Q30
C84
C235
1 6E
NC
AG
ND
EN
CB
VO
L INV
OL O
UT
GN
D
R271
C236
Q33
E
B
CC237
R273
C238
C88
C239
C89
R275
R277
C240
C90
C241
C91
C242
C93
C94
C95
C96
R282
C97
R283
C98
C99
R285
C2
R286
C3
C4
C5
R289
C6
C7
C8C
9
Q52
D1
D2
D3
D4
Q58
DS
G
D5
D6
D8
D9
C270
C276
C281
C282
C283
C284
C285
C286
C293 C294
C295
C298
C299
TH
4
CN
10
R100R101
R103
R104
CN15
CN
17
R107
D10R108
D11
R109
D12
D13
R110
D18
R111
D19
D20
D21
D22
D24
R310
R312
R313
D27
L1
L2
L3
L4
R318
L5
L6
D30
L8
L9
D32
D33
D35
CP
31
D36
CP32 CP33
R130
R325
R326
L10
L11
CD
1
L13
C100
L14
C101
L15
C102
L16
L17
L18
L19L20L21L22
C303
L23
L24
L25
R342
L26
R343
L27
R344
1
2
3
4IC4
L28
L29
IC5
1 345
R346
R347
R348
IC8
R155 R156
L30
CF1
L32
C314
R10
L34
R11
L35R352
C316
R12
L36R353
R354
C124
R14
L38
R160
R15
R161
R16
R162
R17
R163
C510
R164
C129
L40
L41
C323
D73
D74
C130
C324
C131
C132
C326
C133
C327
C134
D79
Q1
G
S D
C135
C329
Q2C136
Q3
DSG
C137
R173
R174
C139
Q5
R175
R176
R177
D80
C330
L50
R178
Q9
R179C332
L54
C140
C141
C335L56
C336
C142
C144
R180
C338
C145
R181
R182
C146
C147
R183
R4
C148
R39
R5
R185
R6
R7
R8
R9
L65
R41
R42
C152
C153
L68
R190
R45
R191
R46
R192
C156
C157
R47
R193
R194
C158
R49
R195
C159
R196
R197
R198
R199
C352
C353
R50
C160
R51
B
C161
R52
C162
C357
R53
C163
C164
C358
R54
R55
C165
R56
R59
C361
C363
C364
R60
C365
R186
R61
C366
R62
C367
R64
C369
C177
C178
C179
C87
R88
CN1
R91
R92R93
R94
R95
R96
R97
X3
R98
R99
C10
C11
C13
R200
C14
R201
C15
C17C18
C19
IC12
1
46
3
IC16
1
45
8
+
1120
3031 60
61
90
91
+
+
LV
J72-0884-19 (A/3)
46 47
TH-K4AT/K4E PC BOARD
Component side
Foil side
Layer 1Layer 2Layer 3Layer 4
TX-RX UNIT (X57-675X-XX) (A/3) 0-21 : M2 2-71 : E
Foil side view (J72-0884-19 A/3)
TX-RX UNIT (X57-675X-XX) (A/3) 0-21 : M2 2-71 : E
Foil side view (J72-0884-19 A/3)
PC BOARD TH-K4AT/K4E
Ref. No. Address
IC4 10E
IC5 10K
IC8 7E
IC12 6B
IC16 8L
Q1 4P
Q2 3O
Q3 3P
Ref. No. Address
Q5 3N
Q9 4N
Q10 5N
Q11 6M
Q16 4L
Q17 3J
Q29 10J
Q30 8J
Ref. No. Address
Q33 9N
Q52 7G
Q58 6K
D1 4R
D2 3R
D3 3R
D4 3R
D5 2Q
Ref. No. Address
D6 3Q
D8 4M
D9 3M
D10 3G
D11 4G
D12 3F
D13 3G
D18 2L
Ref. No. Address
D19 2L
D20 3I
D21 3H
D22 10J
D24 8I
D27 9J
D30 8N
D32 8M
Ref. No. Address
D33 8N
D35 7N
D36 9D
D73 7N
D74 3F
D79 11I
D80 11I
JIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
*
MIC1
+ –
D42
D43
D44
D46
D47
S7PTT
MENU
1/F 2/VFO 3/MR F/CALL
VFO654
7 8 9 MR
CALL#0
LAMPMONI
J72-0884-19 (B/3)
J72-0884-19 (C/3)
48
TH-K4AT/K4E PC BOARD
Component side
Foil side
Layer 1Layer 2Layer 3Layer 4
TX-RX UNIT (X57-675X-XX) (B,C/3) 0-21 : M2 2-71 : E
Component side view (J72-0884-19 B,C/3)
Ref. No. Address
D42 4D
D43 5D
D44 8D
D46 5G
D47 8G
A B C D E F G H I J
1
2
3
4
5
6
7
8
9
10
11
12
13
14
J72-0884-19 (B/3)
J72-0884-19 (C/3)
R230
C243
+–
Q50
DG
12
14 13
S
D48
D49
R336
R337
C374
CN7
1P
TT
KY
O2
BL
5
2K
IN4
KY
O1
GN
D6
CN8
KIN3KIN0KIN2GNDMIG8MIM
KYO2KYO1KYO0LAMPKIN4
KYO3KIN1
49
PC BOARD TH-K4AT/K4E
TX-RX UNIT (X57-675X-XX) (B,C/3) 0-21 : M2 2-71 : E
Foil side view (J72-0884-19 B,C/3)
Component side
Foil side
Layer 1Layer 2Layer 3Layer 4
Ref. No. Address
Q50 3I
D48 11C
D49 11B
50
TH-K4AT/K4E SCHEMATIC DIAGRAM
A B C D E
1
2
3
4
5
6
7
X57-675 1/5
-t
-t
-t
5MS
2SC4919Q29
R194
10k
C258
0.1u
C290
470p
C246
100u10
R14
0
10k
IC16NJM2904V
1
2
3
4GND
5
6
7
8V+
R155
100k
C36
747
0p
R206
15
D80DA221
D40
B30
-215
6-05
R183
33k
R27
3
1k
R17
4
560k
R200
10k
C20
7
0.02
2u
2SK1830Q35
C352
470p
R15
1
1.2k
C202
270p
C25
7
1000
p
R191
47k
D25
MA2S111
R21
210
k
R21
5
470k
C25
5
10u1
0
D30RB521S-30
R182
1k
R17
9
220k
D79DA221
R27
24.
7k
R161
1.8k
C228
0.1u
R201
4.7k
R20
4
180k
R21
8
0
C22
60.
1u
R164
47k
F3
0.5A
C28
61u
J4
SP
D26
1SS
388
R19
8
10k
C25
6
1000
p
C22
3
470p
R153
1k
D36
RB521S-30
C24
2
0.01
u
D27RB706F-40
R21
6
10k
R207
1k
C23
9
470p
C208
82p
R17
7
10k
C36
6
470p
2SJ347Q36
C205
0.047u
C22
4
0.1u
R17
3
15k
R147
10k
C24
9
470p
D35
RB521S-30
R210 12
R15
22.
2k
J2
R35
50
R332 15
R197
100
D24MA742
C281 470p
C36
5
470p
IC6 TA7368F
1
2
3
4
56NF
7PHASE
8PRE-GND
9PW-GND
10POUT
L50R203
470k
IC5NJM2107F
1
2
3 4
5V+
2SK1830Q31
C24
1
470p
J3
MIC
Q47
RN
1701
D32RB051L-40
C229
0.1u
CN1
1
2
3
4
5
6
C220
4700p
C27
6
470p
C19
7
0.02
7u
R18
147
0
R144
0
R163
470k
C284470p
C24
7
0.1u
CN21
2
D221SS361
C24
8
0.1u
R22
6
220
R156
100k
C23
1
470p
D81RB521S-30
C219
0.047u
2SK1830Q27
R195
100
TH
3
100k
R20
2
47k
C210 0.01u
2SC4617(R)Q38
C225
1u
D31DA221
TH
4
100k
F1
2.5AD33
RB051L-40
R145
4.7k
C22
7
2.2u
4
C358
0.047u
R20
5
100
R141
1k
IC4
XC
6202
PB
52F
R
124
GN
D
3
C221
0.01u
R330
470
C27
9
470p
C338
1u
2SC4617(R)Q30
C24
0
470p
C285
470p
R22
7
100
R19
3
1.8k
C270470p
R33
5
1k
CPH3417Q56
R14
8
5.6k
R178
0
L49
R16
2
270k
2SK1830Q34
C195
10u10
C291
470p
R18
5
270k
C193
4.7u6.3
D41
B30
-215
7-05
R16
0
4.7k
C282 470p
C28
0
470p
C201
1200p
C22
2
0.01
u
C23
8
470p
R20
810
R18
0
39k
C236
0.01u
R21
3
22k
C235
0.01u
C25
0
1u
D34
MA
ZS
0270
H
C252
100p
C511
470p
C206
0.018u
C23
0
1u
C353 470p
R199
1k
VR550k
R17
6
820k
R211
470k
R13
7
4.7k
R209
100k
C23
7
10u1
0
R21
7
820
R190
47k
C27
1
470p
C198
1u
2SB1184(Q,R)Q37
C27
2
470p
2SB1184(Q,R)Q33
C19
6
0.02
7u
R196
10k
C253
10u10
C209 470p
R192
470
R175
2.2k
C28
347
0p
R21
4
10k
C36
847
0p
L68
C20
0
0.01
u
R154
4.7k
R143
27k VR650k
TH
2
100k
R13
9
4.7k
R146
4.7k
R142
1k
R165
820k
C349
0.1u
R158
330k
IC17NJM2904V
1 2 3 4G
ND
5678V
+
C33
9
0.04
7u
C20
4
0.03
3u
R324
47k
C331
470p
C21
1
2200
p
C20
3
120p
R168
180kC212
0.012u
R15
9
120k
R16
6
820k
R167
180k
C35
1
0.01
u
C21
3
4.7u
6.3
R17
1
39k
(D)
R170
56k(D)
R15
7
330k
C510
0.047u
R223
100k
R234
18k
R35
4
33k
NI-MHTEMPERATUREDETECTION
Q37
TX/BUSYLED SW
VOLOUT
D81
Q36
Q33 OPERATION SW
AVRCONSTANT-VOLTAGE
SP
5C/5R/5T AVR
T0
+B
SPG
DCS BAL
SP MUTE SW
REM
DC IN
CHARGE SW
Q31Q56 OPERATION SW
WIDE/NARROWCHANGEOVER SW
TX-RX UNIT (X57-675X-XX)(A/3)
SPK
SPG
DC INDETECTION
REVERSE CURRENTPREVENTION
BTEMP
PTTE
TXD
RE
M
RXD
5MS
W/N
8 OHM
MICM
CHARGE
MIC ALCRECTIFICATION
MIC MUTECONTROL
REVERSE CURRENTPREVENTION
D79,80
LIMITER
SP MUTESPEED UP
VOX DETECTIONRECTIFICATION
11.5V AVR
5C/5R/5T AVR
5MS
8V
BATTERYTERMINAL
AF AMP/LAMP AVR
DTMF/BEEP/1750
VOXDETECTION AMP
REVERSE CURRENTPREVENTION
5MV
MICMUTESW
MIG
VO
LOU
T
IM
CTCSS/DCS FILTER
MIC AMP
PTTMIC
MIG
DT
MF
/175
0
SPM
MAX DEV
TXD
IM
CONSTANT-CURRENTCIRCUIT
IM
REM/TXD
AF AMP
PTTESPK
HPF
AFO
RXD
5M
QT/DQT
5T
MOD
ENCB
5MS
TO
VOLIN
NAR
ENCA
5MS
MO
D
NA
R
VO
LIN
EN
CB
EN
CA
BUSY LEDTX LED
ROTARYENCODER
&VOL KNOB
GND
ENCA
GND
ENCB
VOLIN
VOLOUT
1
VCC
VIN
RIPPLE
D26
C246 DISCHARGE
VO
UT
VS
S
VIN
D33,35,36
REVERSECURRENTPREVENTION
Q38
Q37 OPERATION SW
DCDETBTDET
8V
BTEMPCHARGE
AFAMP5M
+B
IM
MICM
TXDSPM
RXD
MIG
PTTE
REM
TONE
VOXIN
DTMF/BEEP
RXLED
5C
+B
5MS
ENCB
NARTO
SIGIN
MOD
5T
5RQT/DQT
ENCA
VOLIN
5MV
R17
2
10k
R18
6
68k
T:4.95VR:0V
T:3.29VR:110mV
T:73mVR:3.39V
T:4.95VR:0V
3.23V
7.14V
4.93V
13.57V 7.12V
11.43V
13.8V
13.40V
4.42V
T:0VR:4.90V
2.02V
TH-K4AT/K4ESCHEMATIC DIAGRAM
F G H I J
X57-675 2/5
TX-RX UNIT (X57-675X-XX)(A/3)
SEG31
SE
G5
R313
3.3k
R31
2
4.7k
COM3
R27
5
47k
CP
331k
R235
1k
CO
M2
SE
G3
SE
G26
SE
G4
R32
3
4.7k
CP
321k
R318
1k
CO
M3
R342 0
SEG5
R25
61k
SE
G6
SE
G23
SEG18
CP
341k
CP313.9k
C29
5
5p
R343 0S
EG
17
SEG17
SE
G1
R285
0
SE
G21
IC8
90522BPFFG139
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
313233343536373839404142434445464748495051525354555657585960
61COM2
62COM3
63VSS
64SEG16
65SEG17
66SEG18
67SEG19
68SEG20
69SEG21
70SEG22
71SEG23
72SEG24
73NC
74NC
75SEG25
76SEG26
77SEG27
78SEG28
79SEG29
80SEG30
81SEG31
82V0
83V1
84V2
85V3
86HST(VCC)
87MD2
88MD1
89MD0
90RESET
91V
SS
92X
0
93X
1
94V
CC
95P
WR
SW
96IN
TU
P
97IN
TD
W
98D
CD
ET
99R
XLE
D
100
BS
FT
101
PLL
EN
102
PLL
LD
103
KIN
0
104
KIN
1
105
KIN
2
106
KIN
3
107
KIN
4
108
TY
PE
109
VU
KE
Y
110
MIC
M
111
NO
AA
112
5R
113
SH
IFT
114
5T
115
KO
UT
0
116
KO
UT
1
117
KO
UT
2
118
KO
UT
3
119
VS
S
120
BT
DE
T
SE
G2
SEG1
R310
3.9k
R28
6
0
SE
G24
C29
4
5p
SEG19
SEG6
SE
G19
R32
6
0
SE
G16
SEG11
SE
G18
SEG30
SE
G22
C3600.1u
Q52RN1107
CP
351k
SE
G12
SE
G0
SEG8
R25
41k
R283
0
SE
G15
SEG22
SE
G11
SEG0
R32
547
k
SEG21
SEG7
SE
G29
C3350.1u
R25
31k
SEG20
SE
G27
SEG25
COM0
SEG3
SE
G9
C359
0.1u
SEG13
SE
G28
SEG24
SEG12
SE
G30
SEG2
X3
7.98
2MH
z
R282
0
CO
M0
SE
G14
SEG23
SE
G13
C293
47p
SEG14
SEG29
C3320.1u
SE
G8
R27
6
47k
SEG28
R27
7
47k
COM2
COM1
SEG27
SEG9
SE
G10
LCD (B38-0881-05)
1C
OM
0
2C
OM
1
3C
OM
2
4C
OM
3
5S
EG
0
6S
EG
1
7S
EG
2
8S
EG
3
9S
EG
4
10S
EG
5
11S
EG
6
12S
EG
7
13S
EG
8
14S
EG
9
15S
EG
10
16S
EG
11
17S
EG
12
18S
EG
13
19S
EG
14
20S
EG
15
21S
EG
16
22S
EG
17
23S
EG
18
24S
EG
19
25S
EG
20
26S
EG
21
27S
EG
22
28S
EG
23
29S
EG
24
30S
EG
25
31S
EG
26
32S
EG
27
33S
EG
28
34S
EG
29
35S
EG
30
36S
EG
31
SE
G7
SEG26
C336
0.1u
SE
G25
SEG16
SEG15
SE
G31
SE
G20
SEG4
CO
M1
SEG10
BEAT SHIFT SW
5C/5R/5T AVR5C/5R/5T AVR
ENCBENCA
SQV
MPU
SMV
PTTE
SPM
RXD
TXD
TEMP
8V
BTDETDCDET
5M
CHARGE
+BBTEMP
AFAMP
TXD
IM
RXD
MIG
SPM
PTTE
MICMRXD
IM
SPM
PTTE
MIGTXD
REM
TONE
VOXIN
DTMF/BEEP
RXLED
SIGIN
VOLIN
NAR
ENCA
MOD
ENCB
5C
TO
5MS
5RQT/DQT
5T
5MV
+B
SE
G14
SE
G15
VS
S
C0R
1
EN
CA
EN
CB
5MS
DV
CC
DV
SS
DT
MF
/BE
EP
TON
E
AV
CC
AV
RH
AV
RL
AV
SS
RE
M
SIG
INSQ
SM
VO
XIN
TH
ER
M
BAT
T
BT
EM
P
VC
C
CH
AR
GE
LAM
P
AFA
MP
NA
R
CO
M0
CO
M1
CLOCK
DATA
EEPDI
EEPCS
VOX
BPF/APC
KAPC
VCC
AFM
SPM
RXD
TXD
PTTE
PTTI
5C(SAVE)
FINAL
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
KA
PC
AF
M
SH
IFT
FIN
AL
CLO
CK
DAT
A
PLL
EN
PLL
LD
5MS
5MV
CLOCK
5T
NAR
VOLIN
+B
SQVSMV
PLLLD
KAPCAFM
PLLEN
SHIFT
TO
MOD
5R5C
DATA
QT/DQT
FINALTEMP
5M
BATT
LAMP5MS SW
5M
+B
8V
IMMIG
5M
PTTI
5C SW
5R SW5T SW
VOX
EEPCS
EEPDI
BPF/APC
INT0
PWR SWRESET
KIN4
KOUT2
KIN0
KOUT1
TYPE
KIN1
VUKEYKOUT0
KOUT3
KIN3KIN2
4.95V
ON:4.91V
TH-K4AT/K4E SCHEMATIC DIAGRAM
R25
2
100k
Q51RN4902
C30
8
470p
R238 1k
C34
6
470p
IC10S-80844CNNBB85
1O
UT
2V
DD
4V
SS
3N
C
C31
0
1u
C30
2
470p
CN71
2
3
4
5
6
Q53
RN
2701
C311
0.1u
D43
B30
-220
5-05
D46
B30
-220
5-05
MIC1
C30
547
0p
C31
3
0.03
9u
CN61
2
3
4
5
6
R26
3
10k
C34
447
0p
C30
91u
C34
5
470p
D72
MA
2S11
1
R242
330k
R236 1k
IC11S-80930CNNBG80
1VSS
2VDD
4OUT
3CD
CN81234567891011121314
C30
7
0.1u
L63
S7S70-0485-05
C31
7
470p
C30
047
0p
D42
B30
-220
5-05
IC9
TK
1125
0CM
1 2 34
VO
UT
5G
ND
2
6V
IN
IC15AT25160N10SI27
1
2
3
4 5
6
7
8
CN91234567891011121314
D64
MA
2S11
1
D48
B30-2237-05
C24
3
470p
C35
5
0.01
u
C316
0.1u
R23
0*
C30
3
150u
6.3
D71
MA
2S11
1
C31
9
10u1
0
R246
3.9k
C33
0
470p
CPH3317Q55
C35
4
470p
R33
6
220
C31
8
470p
R32
8
470k
R23
1
150
D65
MA
2S11
1
R25
5
0
IC12
TK
1125
0CU
CB
1N
P
2G
ND
3C
ON
T4
VIN
6V
OU
T
R33
7
470
D60
*
C31
2
0.03
9u
D70
MA
2S11
1
R243
330k
D63
*
C30
447
0p
R237 100k
C347
470p
Q57RN2105
D69
MA
2S11
1
C31
4
470p
R248
3.9k
Q41RN2105
C348
470p
D62
*
D47
*
2SK1830Q50
D49
B30-2237-05
C30
647
p
D44
*
C37
1
470p
C37
2
470p
C37
0
470p
D61
MA
2S11
1 C374*
R241
330k
R24
010
0k
C29
91u
C29
847
0p
KIN
3
GND
BL
KYO1
KYO2
KIN4
PTT
RESETINT0
KEY LED SW
SET
LCD LED SW
5T SW5C SW
5MS SW
EEPROM
5.0V AVR
TX-RX UNIT(X57-675X-XX)(C/3)MARKET CODE
DETECTION
D62-65
D69-72
PTT BOARDREVERSECURRENTPREVENTION
BIT
0
KEYILLUMINATIONLED
D42-44,46,47
BIT
3
BIT
1
BIT
2
TYPE
KE
Y
LAMP
PTT
JUM
PE
R
MONI
MENU
4
CALL#0
TX-RX UNIT(X57-675X-XX)(B/3)8M
VFO
KIN
4
5
MIG
F/CALL
LAM
P
10KEY BOARD
GN
D
KY
O0
1/F
KIN
2
KY
O1
6
KIN
0
KY
O2
*
2/VFO
PO
WE
R S
W
KIN
1
IMKY
O3
5R/5MVSW
3.3V VOLTAGE DETECTION
3/MR
4.4V VOLTAGE DETECTION
5.0V AVR
V/U
5R5MV
5T
+B
5MS
LAM
P
BPF/APC
R239
QT/DQT
5MV
+B
SQVSMV
DATAKAPC
PLLLD
AFM
PLLEN
SHIFT
NAR
5T5MS
TO
MOD
5R5C
VOLIN
CLOCK
TEMPFINAL
5M
SI
SCK
HOLD
VCCCS
SO
WP
GND
5M
+B
5C/5R/5T AVR
IMMIG
8V
RESET
5R SW5T SW
PWR SW
INT0
VUKEY
KIN3
KOUT0
TYPE
KIN2
KOUT3
KOUT1
KIN1KIN0
KIN4
KOUT2
VOX
BPF/APC
EEPDI
EEPCS
5C SW
PTTI
5M
BATT
5MS SWLAMP
5C5MS
DAT
A
CLO
CK
D61
UHF TYPE DETECTION
KEY TYPE DETECTION
D60
D48,49
LCDILLUMINATIONLED
5T
NAR
VOLIN
+B
SHIFTPLLLD
5C
PLLEN
AFMKAPCDATA
QT/DQT
5MS
5R
TO
MOD
CLOCK
SMVSQV
FINALTEMP
8 9 MR7
1k
C29
70.
1u
R244
0
CO
NT
GN
D1
NP
ON:4.92V
4.80V
4.79V
4.98V
4.83V4.95V
ON:6.98V
T:0VR:4.90V
5.03V
T:4.95VR:0V
T:4.99VR:0V
K L M N O
X57-675 3/5
TX-RX UNIT (X57-675X-XX)(A/3)
TH-K4AT/K4ESCHEMATIC DIAGRAM
R12
6
27k
C26
470p
CP23.9k
C17
470p
D5
HSC277
L58
820n
C54
470p
C24
470p
C52
10p
C167
0.1u
2SC4617(R)Q4
C191
0.01u
C187
2p
R12
7
47
L64
4.7u
R11
55.
6k
2SC5488Q6
C19
8p
2SC5488Q2
D16
MA2S111
C170
0.068u
R117
2.7k(D)
Q22RN2105
C180
120p
C18
6
24p
C1
0.01
u
C11
470p
R20 1k
C16
8
0.1u
C46
100p
CP
12.
7k
R15
5.6k
R5
100k
R1243.3k
C41
4.7u
6.3
C27
10u1
0
L46
560n
CF1L72-0968-05
L922
n
C4
470p
R9
150
R13
5
470k
C45
100p
R116
120k
R346
100
R37 27k
R18
33
R7
47k
C190
0.01u
C20
5p
R36 10
C22
4p
C174
180p
R6
1k
C10
0.01
u
R119
1.8k
C17
5
22p
C56
470p
C12
4
0.1u
C17
6
0.1u
C42
470p
R12
5
560
C13
0.5p(B)
C40 0.1u
R11 150k
C173
180p
2SC4617(R)Q21
X1
12.8MHz
L77-1931-05
VC
GND OUTPUT
VCC
R132
2.2k
R122
2.7k
LV
2SK1830Q3
2SC5488Q5
2SC5488Q24
R128
3.3k
R38
27k
R13
0
100
C37470p
C18
2
0.1u
R18
847
R11
827
k
L53
12n
R17
3.3k
C51
22p
C17
2
1800
p
C18
3
0.1u
C169
0.068u
R32
1k
R120
2.7k
R13
3
1k
C21
470p
C6
470p
D7
MA
2S11
1
C7
0.5p (B
)
R12
47
C166
0.01u
IC1LMX2316TMX
12345678G
ND
3
CE
CLK
DAT
A
LE FO
/LD
VC
C2
VP
C43
0.01
u
C50 22p
IC3TA31136FN
123456789
AF
OU
T
10Q
UA
D
11IF
OU
T
12R
SS
I
13N
-DE
T
14N
-RE
C
15G
ND
16M
IXIN
R8
100k R10 47
C18
947
0p
C17
1
470p
R134390k
R4
1k
R131 330k
C57
10p
2SK1830Q20
R16
270
L67
C30
470p
R21
4.7k
R35 120k
R14
3.3k
C15
12p
R18
9
0
R19
120k
C38
0.01u
C18
824
p
C5
0.1u
R123
1.8k
KTC4082Q23
CD1450kHz
VR1
100k
C44
100p
C19
4
0.1u
C25
470p
C18
470p
C14
470p
L818
n
C55
0.01
u
L45
560n
C19
2
0.01
u
C29
22u6
.3
L5
270n
2SK508NV(52K)Q1
L627
0n
C8 5p (B)
C3
2p(B
)
L3
22n
C2
39p (G)
L2
270n
CN15 CN17
L4
6.8n
D3
HV
C37
6BD
4
HV
C37
6B
D1
HVC376BD2
HVC376B
L1
270nC
34
2.2u
6.3 C
33
0.22
u35
R31
2.2k
C35
0.1u
35
R24
1.2k
R30
1k
C9
5p(B
)
C17
7
10u1
0
C17
8
0.01
u
C17
9
0.1u
D6
1SV
278
IF AMP
SQ FILTER
D1-4
RF AMP
5R
VCO FREQUENCY CONTROL
SM
V
RF AMP
FREQUENCY SHIFT
SQ
V
RIPPLE FILTER
VCO SHIFTCONTROL SW
RF AMP
AF MUTE SW
VCO
SHIFT
VO
LIN
+B5T
2nd L.O.
PLLENDATACLOCKPLLLD
450kHz
AF FILTER
FM IC
PLL ICFREQ
SPEED UP
TRIPLER
D6
VCO MODULATION
5R
5R5R
KAPC
BPF/APC
BPF/APC
BPF/APC
PLLLDPLLEN
SHIFT
+B
5C
NAR
VOLIN
5T
QT/DQT
5MS
5R
TO
MOD
CLOCKDATAKAPCAFM
SQVSMV
TEMPFINAL
DAT
A
5R
CLO
CK
TO
PLL
LD5C
SH
IFT
AF
M
5MS
PLL
EN
MO
D
NA
R
QT
/DQ
T
SM
VS
QV
VO
LIN
VO
LIN
PLL
LDC
LOC
K
5R
PLL
EN
AF
M
5CSQ
VS
MV
QT
/DQ
T
NA
R
DAT
A
BP
F/A
PC
SQ
VS
MV
NA
R
AF
M5R
BP
F/A
PC
OS
CIN
OS
CO
UT
MIX
OU
T
VC
C
IFIN
DE
C
FIL
OU
T
FIL
IN
FLO
CP
O
GN
D1
GN
D2
FIN
FIN
VC
C1
OS
CI
D16
PLL LOCK DETECTION
KAPC
TEMPFINAL
FINALTEMP
9 10 11 12 13 14 15 16
WIDE/NARROWCHANGEOVER SW
1.51V 4.81V
T:0VR:4.62V
4.63V
3.76V
4.63V
0.72V
0.51V
4.77V
W:115mVN:4.94V
4.81V
TX-RX UNIT (X57-675X-XX)(A/3)
X57-675 4/5
P Q R S T
TH-K4AT/K4E SCHEMATIC DIAGRAM
YXWVU
1
2
3
4
5
6
7
-t
5R
D13
HV
C13
1
R47
5.6k
L65
27n
2SK2596Q11
C78
470p
C96 1p
(B)
CN10
L17
2.5n L21
4T
R41
270
D73
MA
2S11
1
2SK3476Q12
D12
HV
C13
1
C82
470p
C364
18p
L54
4.7n
C363
10p
C61
470p
R56
10k
L18
220n
C36
9
470p
C83
0.01
u
R64
0
C36
1
470p
R46
10k
R39
270
L19 4T
C93
3p
(B)
2SK1830Q58
C32
4
470p
C97
4p
(B)
C100 2p
(B)
C95
2p
(B)
2SC4617(R)Q15
R271
12
R33
22
D8
HSC277
L14
4.7n
L20
4T
R54 47
C75
470p
C94470p
L30
C66
0.1u
R55
4.7k
C32
81u
C67
470p
R49 1k
R62 270
C64
470p
C72
0.1u
C71
470p
R53
1k
R60
56k
C329
12p
C91
470p
C99
5p
(B)
C32
3
470p
L10
18n
R45
3.3k
L22
4T 4T
R42
0
R347
150
R58
47
C88 20
p
(G)
D10
HVC131
C70 1u
C86
56p
L23
1u
L11
15n
L16
L13
L56
6.8n
R289
0
R51
470
C10
23p
(B)
R50 33
D9
HSC277
L15
4.7n
C77
47p
C89
33p
R61 270C35
7
1u
D11
HVC131
C84
0.1u
C32
7
0.1u
2SC5488Q9
C87
18p
C73
470p
R34
4
47
R52
1k
C10
14p
(B)
C90
470p
C76 8p
C98 2p
(B)
C65 10p C326
470p
D74
HS
M88
AS
C68
10p
2SC4926YDQ10
R59
12k
R34
3.3k
R34
8
68
R85 560
R77
150k (D
)
Q14RN4902
R78
150k
(D)
C11
3
470p
R86
5.6k
TH
1
10k
C11
8
470pC112 470p
R74 100k
(D)
D14
RB
521S
-30
R71
0.39
R70
0.39
R83
56k
C10
9
470p
2SK1830Q13
C10
5
470p
C108
100p
R82 27
k
C10
6
470p
C11
5
470p
C11
147
0p
C11
7
470p
R76 150k
(D)C51
2*
R75
100k (D)
R80
10k
IC2 NJM2904V
1AOUT
2A-IN
3A+IN
4GND
5
6
7
8
R84
100k
R81 390k
C10
7
470p
R72
0.39
C11
6
10u4
C11
4
470p
R79
150k (D)
D15
MA
8039
C356 0.01u
C110 470p
L25
C13
2
0.01
u
C16
447
0p
C162
470p
3SK318Q16C128
0.01u
R10
710
0k
L36
56n
R88
330
D20
1SV
305
R10
3
1.8k L4
0
4.7n
R97
150k
C13
1
0.01
u
L26
470n
R91 1k
R352
0
R11
11.
0M
C146
4p (B)
C140
4p (B)
C13
3
0.01
u
D18
1SV
305
L35
150n
C12
9
11p
R10
812
0k
C13
047
0p
R11
01.
0M
C15
247
0p
XF1L71-0619-05
C12
6
10p
C14
1
470p
C14
58p (B
)
L41
6.8n
L32
27n
C15
8
13p
(G)
L38
12n
L34
27n
C12
5
1.5p
R90
330
R35
1
220
C156470p
D21
1SV
305
C142
470p
D19
1SV
305
C14
4
18p
(G)
R10
1
47
C16
1
3p(B
)
R10
415
0
R10
910
0k
R98
100k 3SK318
Q17
R95
180k
C14
86p
(B)
C165 3p
(B)
R96
100k
R99
1.0M
C13
4
470p
C15
347
0p
C14
7
470p
C159 3p
(B)
R10
0
1.0M
R92
3.3k
C16
0
13p
(G)
C16
3
470p
C15
7
18p
(G)
R93
47
R94
330
C137
7pC136
5p
C13
9
470p
C13
5
5p
L24
27n
L28
12n
L29
15n
L27
680n
R353
0
+B5T
VGGVDD
ANT
RF SW
RF SW
RF AMP
5R
DRIVEAMP
Q10 OPERATION SW
5T
VOLTAGEDROP
DRIVEAMP
5T
OVER INPUTPROTECTION
ANTENNA SWD12,13
ANTENNA SW
ANTENNA SW
5T
POWERAMP
Q12 GATEVOLTAGE SW
APC
+B
KAPC(APC KILL)
1st MIXER
RX 1st AMP
5R
TEMP COMPENSATION
KAPC
5R
X57-675X-XX
APC DIFFERENTIALAMP
APC OUTPUT SW
VGG
APCCIRCUITOPERATIONSWITCH
5T
5T
BPF/APC
TH-K4AT
TH-K4E
FINALTEMP
B+IN
B-IN
BOUT
V+
D14
REVERSE CURRENT PREVENTION
APC OUTPUTVOLTAGE LIMITTER
D15
1st IF
38.85MHz
D18,19
RX BPF TUNING RX BPF TUNING
D20,21
0-21
2-71 E
M2
NO
D44
B30-2205-05
NO
B30-2205-05
D47
MA2S111
NO
D60
MA2S111
D62
NO
D63
MA2S111
NO
R230
220
NO
C374
NO
100p
C512
100p
NO
Reference voltage value are measured when the power supply voltage is 13.8V(DC IN).
2.03V
T:4.31VR:0V
1.43V
T:4.86VR:0V
1.98V
10.37V
4.91V
10.56V
T:0VR:0V
4.56V
2.80V
4.30V
4.56V3.10V
3.14V
2.30V(HIGH POWER)
Note : The components marked with adot ( ) are parts of layer1.
X57-675 5/5
TX-RX UNIT (X57-675X-XX)(A/3)
-t
-t
-t
-t
5R
5MS
R12
6
27k
2SC4919Q29
R194
10k
C258
0.1u
C290
470p
SEG31
C246
100u10
R14
0
10k
R25
2
100k
IC16NJM2904V
1
2
3
4GND
5
6
7
8V+
R155
100k
C36
747
0p
Q51RN4902
SE
G5
C30
8
470p
R313
3.3k
R238 1k
C26
470p
CP23.9k
R31
2
4.7k
C34
6
470p
R206
15
IC10S-80844CNNBB85
1O
UT
2V
DD
4V
SS
3N
C
COM3
R27
5
47k
C17
470p
CP
331k
D5
HSC277
D80DA221
C31
0
1u
R235
1k
D40
B30
-215
6-05
CO
M2
SE
G3
L58
820n
C30
2
470p
C54
470p
SE
G26
SE
G4
C24
470p
R183
33k
C52
10p
C167
0.1u
R27
3
1k
R32
3
4.7k
CN71
2
3
4
5
6
R17
4
560k
CP
321k
R200
10k
Q53
RN
2701
R318
1k
C20
7
0.02
2u
2SK1830Q35
C352
470p
R15
1
1.2k
C202
270p
CO
M3
C311
0.1u
2SC4617(R)Q4
C25
7
1000
p
R191
47k
D25
MA2S111
D43
B30
-220
5-05
R21
210
k
R342 0
R21
5
470k
C25
5
10u1
0
SEG5
D30RB521S-30
D46
B30
-220
5-05
R25
61k
MIC1
C191
0.01u
R182
1k
R17
9
220k
D79DA221
SE
G6
SE
G23
SEG18
C187
2p
CP
341k
R12
7
47
CP313.9k
L64
4.7u
R27
24.
7k
R11
55.
6k
R161
1.8k
2SC5488Q6
C30
547
0p
C29
5
5p
C228
0.1u
R201
4.7k
R20
4
180k
R343 0
R21
8
0
SE
G17
SEG17
C19
8p
2SC5488Q2
C31
3
0.03
9u
SE
G1
C22
60.
1u
CN61
2
3
4
5
6
R285
0
D16
MA2S111
R164
47k
R26
3
10k
C170
0.068u
C34
447
0p
F3
0.5A
C28
61u
R117
2.7k(D)
J4
SP
D26
1SS
388
SE
G21
Q22RN2105
C180
120p
R19
8
10k
IC8
90522BPFFG139
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
313233343536373839404142434445464748495051525354555657585960
61COM2
62COM3
63VSS
64SEG16
65SEG17
66SEG18
67SEG19
68SEG20
69SEG21
70SEG22
71SEG23
72SEG24
73NC
74NC
75SEG25
76SEG26
77SEG27
78SEG28
79SEG29
80SEG30
81SEG31
82V0
83V1
84V2
85V3
86HST(VCC)
87MD2
88MD1
89MD0
90RESET
91V
SS
92X
0
93X
1
94V
CC
95P
WR
SW
96IN
TU
P
97IN
TD
W
98D
CD
ET
99R
XLE
D
100
BS
FT
101
PLL
EN
102
PLL
LD
103
KIN
0
104
KIN
1
105
KIN
2
106
KIN
3
107
KIN
4
108
TY
PE
109
VU
KE
Y
110
MIC
M
111
NO
AA
112
5R
113
SH
IFT
114
5T
115
KO
UT
0
116
KO
UT
1
117
KO
UT
2
118
KO
UT
3
119
VS
S
120
BT
DE
T
C18
6
24p
C1
0.01
u
C11
470p
C25
6
1000
p
R20 1k
SE
G2
C22
3
470p
C16
8
0.1u
SEG1
R153
1k
R310
3.9k
C46
100p
D36
RB521S-30
C24
2
0.01
u
C30
91u
CP
12.
7k
D27RB706F-40
C34
5
470p
R15
5.6k
R5
100k
R21
6
10k
R28
6
0
R1243.3k
SE
G24
C41
4.7u
6.3
C27
10u1
0
L46
560n
R207
1k
C29
4
5p
SEG19
C23
9
470p
CF1L72-0968-05
C208
82pR
177
10k
L922
n
C36
6
470p
D72
MA
2S11
1
C4
470p
2SJ347Q36
SEG6
C205
0.047u
R242
330k
SE
G19
C22
4
0.1u
R9
150
R17
3
15k
R147
10k
C24
9
470p
R32
6
0
R236 1k
IC11S-80930CNNBG80
1VSS
2VDD
4OUT
3CD
D35
RB521S-30
CN81234567891011121314
SE
G16
SEG11
C30
7
0.1u
R13
5
470k
C45
100p
R116
120k
R346
100
R210 12
SE
G18
R37 27k
R15
22.
2k
J2
R35
50
SEG30
R332 15
L63
S7S70-0485-05
C31
7
470p
R18
33
SE
G22
C30
047
0p
R197
100
C3600.1u
R7
47k
D24MA742
C281 470p
C36
5
470p
IC6 TA7368F
1
2
3
4
56NF
7PHASE
8PRE-GND
9PW-GND
10POUT
L50R203
470k
Q52RN1107
IC5NJM2107F
1
2
3 4
5V+
C190
0.01u
D42
B30
-220
5-05
C20
5p
CP
351k
R36 10
IC9
TK
1125
0CM
1 2 34
VO
UT
5G
ND
2
6V
IN
IC15AT25160N10SI27
1
2
3
4 5
6
7
8
2SK1830Q31
SE
G12
CN91234567891011121314
C24
1
470p
C22
4p
C174
180p
SE
G0
J3
MIC
SEG8
R6
1k
D64
MA
2S11
1
Q47
RN
1701
R25
41k
R283
0
C10
0.01
u
D32RB051L-40
D48
B30-2237-05
SE
G15
R119
1.8k
SEG22
C229
0.1u
CN1
1
2
3
4
5
6
SE
G11
C220
4700p
C17
5
22p
C24
3
470p
C56
470p
C27
6
470p
C19
7
0.02
7u
SEG0
R32
547
k
SEG21
R18
147
0
R144
0
C12
4
0.1u
R163
470k
C35
5
0.01
u
C316
0.1u
C17
6
0.1u
C284470p
C24
7
0.1u
R23
0*
CN21
2
D221SS361
C42
470p
R12
5
560
SEG7
C13
0.5p(B)
C40 0.1u
C24
8
0.1u
R11 150k
R22
6
220
SE
G29
C3350.1u
R25
31k
C30
3
150u
6.3
SEG20
D71
MA
2S11
1
C173
180p
R156
100k
C23
1
470p
D81RB521S-30
C219
0.047u
2SK1830Q27
2SC4617(R)Q21
X1
12.8MHz
L77-1931-05
VC
GND OUTPUT
VCC
C31
9
10u1
0
R132
2.2k
R246
3.9k
R122
2.7k
LV
2SK1830Q3
R195
100
2SC5488Q5
SE
G27
SEG25
2SC5488Q24
C33
0
470p
TH
3
100k
R128
3.3k
R38
27k
R20
2
47k
COM0
CPH3317Q55
R13
0
100
C210 0.01u
2SC4617(R)Q38
C225
1u
D31DA221
C35
4
470p
TH
4
100k
F1
2.5A
SEG3
D33
RB051L-40
R33
6
220
R145
4.7k
C31
8
470p
C22
7
2.2u
4
C358
0.047u
C37470p
C18
2
0.1u
R32
8
470k
R23
1
150
R20
5
100
R141
1k
SE
G9
D65
MA
2S11
1
R18
847
IC4
XC
6202
PB
52F
R
124
GN
D
3
C359
0.1u
SEG13
C221
0.01u
R330
470
R11
827
k
SE
G28
SEG24
C27
9
470p
R25
5
0
L53
12n
C338
1u
2SC4617(R)Q30
C24
0
470p
R17
3.3k
C51
22p
C285
470p
C17
2
1800
p
IC12
TK
1125
0CU
CB
1N
P
2G
ND
3C
ON
T4
VIN
6V
OU
T
R22
7
100
SEG12
R19
3
1.8k
SE
G30
C270470p
R33
7
470
C18
3
0.1u
R33
5
1k
C169
0.068u
CPH3417Q56
R14
8
5.6k
D60
*
SEG2
X3
7.98
2MH
z
R178
0
R282
0
R32
1k
R120
2.7k
R13
3
1k
CO
M0
C31
2
0.03
9u
D70
MA
2S11
1
C21
470p
L49
R16
2
270k
2SK1830Q34
SE
G14
SEG23
C6
470p
D7
MA
2S11
1
R243
330k
SE
G13
C195
10u10
C293
47p
SEG14
C7
0.5p (B
)
R12
47
C291
470p
R18
5
270k
C193
4.7u6.3
C166
0.01u
SEG29
D41
B30
-215
7-05
IC1LMX2316TMX
12345678G
ND
3
CE
CLK
DAT
A
LE FO
/LD
VC
C2
VP
C43
0.01
u
C3320.1u
C50 22p
IC3TA31136FN
123456789
AF
OU
T
10Q
UA
D
11IF
OU
T
12R
SS
I
13N
-DE
T
14N
-RE
C
15G
ND
16M
IXIN
R16
0
4.7k
C282 470p
R8
100k
D63
*
C28
0
470p
R10 47
C18
947
0p
C17
1
470p
C201
1200p
SE
G8
C22
2
0.01
u
R134390k
R27
6
47k
C23
8
470p
R4
1k
R20
810
SEG28
R18
0
39k
C236
0.01u
R27
7
47k
R131 330k
COM2
C57
10p
2SK1830Q20
R21
3
22k
C235
0.01u
R16
270
C30
447
0p
L67
C25
0
1u
R237 100k
C30
470p
R21
4.7k
D34
MA
ZS
0270
H
R35 120k
COM1
SEG27
C252
100p
C347
470p
R14
3.3k
C15
12p
C511
470p
R18
9
0
C206
0.018uC
230
1u
SEG9
SE
G10
R19
120k
C353 470p
C38
0.01u
R199
1k
Q57RN2105
VR550k
C18
824
pD69
MA
2S11
1
C5
0.1u
R123
1.8k
LCD (B38-0881-05)
1C
OM
0
2C
OM
1
3C
OM
2
4C
OM
3
5S
EG
0
6S
EG
1
7S
EG
2
8S
EG
3
9S
EG
4
10S
EG
5
11S
EG
6
12S
EG
7
13S
EG
8
14S
EG
9
15S
EG
10
16S
EG
11
17S
EG
12
18S
EG
13
19S
EG
14
20S
EG
15
21S
EG
16
22S
EG
17
23S
EG
18
24S
EG
19
25S
EG
20
26S
EG
21
27S
EG
22
28S
EG
23
29S
EG
24
30S
EG
25
31S
EG
26
32S
EG
27
33S
EG
28
34S
EG
29
35S
EG
30
36S
EG
31
KTC4082Q23
SE
G7
R17
6
820k
CD1450kHz
R211
470k
R13
7
4.7k
SEG26
VR1
100k
C31
4
470p
R209
100k
R248
3.9k
C23
7
10u1
0
C336
0.1u
R21
7
820
SE
G25 Q41
RN2105
C348
470p
D62
*
C44
100p
SEG16
R190
47k
C27
1
470p
C198
1u
D47
*
2SB1184(Q,R)Q37
C19
4
0.1u
C27
2
470p
C25
470p
SEG15
2SB1184(Q,R)Q33
C19
6
0.02
7u
R196
10k
C253
10u10
C18
470p
C14
470p
SE
G31
SE
G20
C209 470p
L818
n
R192
470
R175
2.2k
SEG4
2SK1830Q50
C55
0.01
u
D49
B30-2237-05
L45
560n
CO
M1
C30
647
p
SEG10
D44
*
C19
2
0.01
u
C28
347
0p
R21
4
10k
D13
HV
C13
1
R47
5.6k
L65
27n
2SK2596Q11
C78
470p
C96 1p
(B)
CN10
L17
2.5n L21
4T
R41
270
D73
MA
2S11
1
2SK3476Q12
D12
HV
C13
1
C82
470p
C364
18p
L54
4.7n
C363
10p
C61
470p
R56
10k
L18
220n
C36
9
470p
C83
0.01
u
R64
0
C36
1
470p
R46
10k
R39
270
L19 4T
C93
3p
(B)
2SK1830Q58
C32
4
470p
C97
4p
(B)
C100 2p
(B)
C95
2p
(B)
2SC4617(R)Q15
R271
12
R33
22
D8
HSC277
L14
4.7n
L20
4T
R54 47
C75
470p
C94470p
L30
C66
0.1u
R55
4.7k
C32
81u
C67
470p
R49 1k
R62 270
C64
470p
C72
0.1u
C71
470p
R53
1k
R60
56k
C329
12p
C91
470p
C99
5p
(B)
C32
3
470p
L10
18n
R45
3.3k
L22
4T 4T
R42
0
R347
150
R58
47
C88 20
p
(G)
D10
HVC131
C70 1u
C86
56p
L23
1u
L11
15n
L16
L13
L56
6.8n
R289
0
R51
470
C10
23p
(B)
R50 33
D9
HSC277
L15
4.7n
C77
47p
C89
33p
R61 270C35
7
1u
D11
HVC131
C84
0.1u
C32
7
0.1u
2SC5488Q9
C87
18p
C73
470p
R34
4
47
R52
1k
C10
14p
(B)
C90
470p
C76 8p
C98 2p
(B)
C65 10p C326
470p
D74
HS
M88
AS
C68
10p
2SC4926YDQ10
R59
12k
R34
3.3k
R34
8
68
R85 560
R77
150k (D
)
Q14RN4902
R78
150k
(D)
C11
3
470p
R86
5.6k
TH
1
10k
C11
8
470pC112 470p
R74 100k
(D)
D14
RB
521S
-30
R71
0.39
R70
0.39
R83
56k
C10
9
470p
2SK1830Q13
C10
5
470p
C108
100p
R82 27
k
C10
6
470p
C11
5
470p
C11
147
0p
C11
7
470p
R76 150k
(D)C51
2*
R75
100k (D)
R80
10k
IC2 NJM2904V
1AOUT
2A-IN
3A+IN
4GND
5
6
7
8
R84
100k
R81 390k
C10
7
470p
R72
0.39
C11
6
10u4
C11
4
470p
R79
150k (D)
D15
MA
8039
C356 0.01u
C110 470p
L25
C13
2
0.01
u
C16
447
0p
C162
470p
3SK318Q16C128
0.01u
R10
710
0k
L36
56n
R88
330
D20
1SV
305
R10
3
1.8k L4
0
4.7n
R97
150k
C13
1
0.01
u
L26
470n
R91 1k
R352
0
R11
11.
0M
C146
4p (B)
C140
4p (B)
C13
3
0.01
u
D18
1SV
305
L35
150n
C12
9
11p
R10
812
0k
C13
047
0p
R11
01.
0M
C15
247
0p
XF1L71-0619-05
C12
6
10p
C14
1
470p
C14
58p (B
)
L41
6.8n
L32
27n
C15
8
13p
(G)
L38
12n
L34
27n
C12
5
1.5p
R90
330
R35
1
220
C156470p
D21
1SV
305
C142
470p
D19
1SV
305
C14
4
18p
(G)
R10
1
47
C16
1
3p(B
)
R10
415
0
R10
910
0k
R98
100k 3SK318
Q17
R95
180k
C14
86p
(B)
C165 3p
(B)
R96
100k
R99
1.0M
C13
4
470p
C15
347
0p
C14
7
470p
C159 3p
(B)
R10
0
1.0M
R92
3.3k
C16
0
13p
(G)
C16
3
470p
C15
7
18p
(G)
R93
47
R94
330
C137
7pC136
5p
C13
9
470p
C13
5
5p
L24
27n
L28
12n
L29
15n
C29
22u6
.3
L5
270n
2SK508NV(52K)Q1
L627
0n
C8 5p (B)
C3
2p(B
)
L3
22n
C2
39p (G)
L2
270n
CN15 CN17
L4
6.8n
D3
HV
C37
6BD
4
HV
C37
6B
D1
HVC376BD2
HVC376B
L1
270n
C34
2.2u
6.3 C
33
0.22
u35
R31
2.2k
C35
0.1u
35
R24
1.2k
R30
1k
C37
1
470p
C37
2
470p
C37
0
470p
D61
MA
2S11
1
C36
847
0p
L68
C20
0
0.01
u
R154
4.7k
R143
27k VR650k
TH
2
100k
R13
9
4.7k
R146
4.7k
R142
1k
R165
820k
C349
0.1u
R158
330k
IC17NJM2904V
1 2 3 4G
ND
5678V
+
C33
9
0.04
7u
C20
4
0.03
3u
R324
47k
C331
470p
C21
1
2200
p
C20
3
120p
R168
180kC212
0.012u
R15
9
120k
R16
6
820k
R167
180k
C35
1
0.01
u
C21
3
4.7u
6.3
R17
1
39k
(D)
R170
56k(D)
R15
7
330k
C9
5p(B
)
C17
7
10u1
0
C17
8
0.01
u
C17
9
0.1u
C374*
C510
0.047u
D6
1SV
278
L27
680n
R223
100k
R234
18k
R353
0
R35
4
33k
R241
330k
R24
010
0k
C29
91u
C29
847
0p
NI-MHTEMPERATUREDETECTION
IF AMP
SQ FILTER
D1-4
RF AMP
5R
VCO FREQUENCY CONTROL
KIN
3
SM
V
RF AMP
GND
FREQUENCY SHIFT
SQ
V
BL
RIPPLE FILTER
KYO1
VCO SHIFTCONTROL SW
Q37
RF AMP
KYO2
AF MUTE SW
VCO
KIN4
PTT
RESET
TX/BUSYLED SW
INT0
KEY LED SW
SET
LCD LED SW
SHIFT
VO
LIN
+B
VOLOUT
+B
D81
BEAT SHIFT SW
Q36
5T SW
Q33 OPERATION SW
AVRCONSTANT-VOLTAGE
5C SW5MS SW
5T
5C/5R/5T AVR5C/5R/5T AVR
SP
5C/5R/5T AVR
5T
T0
+B
SPG
DCS BAL
SP MUTE SW
EEPROM
REM
DC IN
CHARGE SW
2nd L.O.
PLLENDATACLOCKPLLLD
Q31
450kHz
Q56 OPERATION SW
WIDE/NARROWCHANGEOVER SW
AF FILTER
5.0V AVR
TX-RX UNIT(X57-675X-XX)(C/3)
FM IC
TX-RX UNIT (X57-675X-XX)(A/3)
SPK
MARKET CODEDETECTION
SPG
D62-65
PLL ICFREQ
D69-72
PTT BOARDREVERSECURRENTPREVENTION
BIT
0
SPEED UP
DC INDETECTION
KEYILLUMINATIONLED
REVERSE CURRENTPREVENTION
BTEMP
PTTE
ENCB
TXD
ENCA
RE
M
RXD
D42-44,46,47
BIT
3
5MS
BIT
1
BIT
2
TYPE
KE
Y
W/N
8 OHM
MICM
LAMP
CHARGE
PTT
JUM
PE
R
MIC ALCRECTIFICATION
MONIMIC MUTECONTROL
REVERSE CURRENTPREVENTION
D79,80
MENU
LIMITER
SP MUTESPEED UP
4
VOX DETECTIONRECTIFICATION
CALL
11.5V AVR
5C/5R/5T AVR
#
5MS
0
8V
BATTERYTERMINAL
TX-RX UNIT(X57-675X-XX)(B/3)
AF AMP/LAMP AVR
8M
VFO
KIN
4DTMF/BEEP/1750
5
MIG
VOXDETECTION AMP
F/CALL
REVERSE CURRENTPREVENTION
LAM
P
5MV
10KEY BOARD
GN
D
KY
O0
1/F
KIN
2
MICMUTESW
TRIPLER
KY
O1
6
KIN
0
KY
O2
SQV
*
MIG
2/VFO
D6
VO
LOU
T
PO
WE
R S
W
VCO MODULATION
IM
KIN
1
IM
CTCSS/DCS FILTER
KY
O3
MIC AMP
5R/5MVSW
PTT
5R
3.3V VOLTAGE DETECTION
MIC
5R
3/MR
5R
4.4V VOLTAGE DETECTION
MIG
DT
MF
/175
0
SPM
MAX DEV5.0V AVR
TXD
IM
MPU
CONSTANT-CURRENTCIRCUIT
IM
REM/TXD
AF AMP
PTTESPK
HPF
AFO
RXD
SMV
VGGVDD
ANT
RF SW
RF SW
RF AMP
5R
DRIVEAMP
Q10 OPERATION SW
5T
VOLTAGEDROP
DRIVEAMP
5T
OVER INPUTPROTECTION
ANTENNA SWD12,13
ANTENNA SW
ANTENNA SW
5T
POWERAMP
Q12 GATEVOLTAGE SW
APC
+B
KAPC(APC KILL)
1st MIXER
RX 1st AMP
5R
TEMP COMPENSATION
KAPC KAPC
5R
V/U
5M
QT/DQT
X57-675X-XX
5R5MV
5T
APC DIFFERENTIALAMP
APC OUTPUT SW
VGG
APCCIRCUITOPERATIONSWITCH
5T
5T
PTTE
SPM
RXD
TXD
5T
TEMP
+B
5MS
LAM
P
BPF/APC BPF/APC
BPF/APC BPF/APC
BPF/APC
TH-K4AT
TH-K4E
R239
MOD
ENCB
5MS
TO
VOLIN
NAR
ENCA
5MS
MO
D
NA
R
VO
LIN
EN
CB
EN
CA
BUSY LEDTX LED
ROTARYENCODER
&VOL KNOB
GND
ENCA
GND
ENCB
VOLIN
VOLOUT
1
VCC
VIN
RIPPLE
D26
C246 DISCHARGE
VO
UT
VS
S
VIN
D33,35,36
REVERSECURRENTPREVENTION
Q38
Q37 OPERATION SW
DCDETBTDET
8V
BTEMPCHARGE
AFAMP5M
+B
8V
BTDETDCDET
5M
CHARGE
+BBTEMP
AFAMP
TXD
IM
RXD
MIG
SPM
PTTE
MICMRXD
IM
SPM
PTTE
MIGTXD
IM
MICM
TXDSPM
RXD
MIG
PTTE
REM
TONE
VOXIN
DTMF/BEEP
RXLED
REM
TONE
VOXIN
DTMF/BEEP
RXLED
SIGIN
VOLIN
NAR
ENCA
MOD
ENCB
5C
TO
5MS
5RQT/DQT
5T
5MV
+B
5C
+B
5MS
ENCB
NARTO
SIGIN
MOD
5T
5RQT/DQT
ENCA
VOLIN
5MV
SE
G14
SE
G15
VS
S
C0R
1
EN
CA
EN
CB
5MS
DV
CC
DV
SS
DT
MF
/BE
EP
TON
E
AV
CC
AV
RH
AV
RL
AV
SS
RE
M
SIG
INSQ
SM
VO
XIN
TH
ER
M
BAT
T
BT
EM
P
VC
C
CH
AR
GE
LAM
P
AFA
MP
NA
R
CO
M0
CO
M1
CLOCK
DATA
EEPDI
EEPCS
VOX
BPF/APC
KAPC
VCC
AFM
SPM
RXD
TXD
PTTE
PTTI
5C(SAVE)
FINAL
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
KA
PC
AF
M
SH
IFT
FIN
AL
CLO
CK
DAT
A
PLL
EN
PLL
LD
5MS
5MV
CLOCK
5T
NAR
VOLIN
+B
SQVSMV
PLLLD
KAPCAFM
PLLEN
SHIFT
TO
MOD
5R5C
DATA
QT/DQT
FINALTEMP
5M
QT/DQT
5MV
+B
SQVSMV
DATAKAPC
PLLLD
AFM
PLLEN
SHIFT
NAR
5T5MS
TO
MOD
5R5C
VOLIN
CLOCK
TEMPFINAL
5M
BATT
LAMP5MS SW
SI
SCK
HOLD
VCCCS
SO
WP
GND
5M
+B
8V
IMMIG
5M
PTTI
5C SW
5R SW5T SW
VOX
EEPCS
EEPDI
BPF/APC
INT0
PWR SWRESET
KIN4
KOUT2
KIN0
KOUT1
TYPE
KIN1
VUKEYKOUT0
KOUT3
KIN3KIN2
5M
+B
5C/5R/5T AVR
IMMIG
8V
RESET
5R SW5T SW
PWR SW
INT0
VUKEY
KIN3
KOUT0
TYPE
KIN2
KOUT3
KOUT1
KIN1KIN0
KIN4
KOUT2
VOX
BPF/APC
EEPDI
EEPCS
5C SW
PTTI
5M
BATT
5MS SWLAMP
5C5MS
DAT
A
CLO
CK
D61
UHF TYPE DETECTION
KEY TYPE DETECTION
D60
D48,49
LCDILLUMINATIONLED
5T
NAR
VOLIN
+B
SHIFTPLLLD
5C
PLLEN
AFMKAPCDATA
QT/DQT
5MS
5R
TO
MOD
CLOCK
SMVSQV
FINALTEMP
PLLLDPLLEN
SHIFT
+B
5C
NAR
VOLIN
5T
QT/DQT
5MS
5R
TO
MOD
CLOCKDATAKAPCAFM
SQVSMV
TEMPFINAL
DAT
A
5R
CLO
CK
TO
PLL
LD5C
SH
IFT
AF
M
5MS
PLL
EN
MO
D
NA
R
QT
/DQ
T
SM
VS
QV
VO
LIN
VO
LIN
PLL
LDC
LOC
K
5R
PLL
EN
AF
M
5CSQ
VS
MV
QT
/DQ
T
NA
R
DAT
A
BP
F/A
PC
SQ
VS
MV
NA
R
AF
M5R
BP
F/A
PC
OS
CIN
OS
CO
UT
MIX
OU
T
VC
C
IFIN
DE
C
FIL
OU
T
FIL
IN
FLO
CP
O
GN
D1
GN
D2
FIN
FIN
VC
C1
OS
CI
D16
PLL LOCK DETECTION
KAPC
TEMPFINAL
FINALTEMP
FINALTEMP
B+IN
B-IN
BOUT
V+
D14
REVERSE CURRENT PREVENTION
APC OUTPUTVOLTAGE LIMITTER
D15
1st IF
38.85MHz
D18,19
RX BPF TUNING RX BPF TUNING
D20,21
0-21
2-71 E
M2
NO
D44
B30-2205-05
NO
B30-2205-05
D47
MA2S111
NO
D60
MA2S111
D62
NO
D63
MA2S111
NO
R230
220
NO
C374
NO
100p
C512
100p
NO
9 10 11 12 13 14 15 16
8 9 MR7
1k
C29
70.
1u
R244
0
WIDE/NARROWCHANGEOVER SW
CO
NT
GN
D1
NP
R17
2
10k
R18
6
68k
T:4.95VR:0V
Reference voltage value are measured when the power supply voltage is 13.8V(DC IN).
1.51V 4.81V
4.95V
T:3.29VR:110mV
T:73mVR:3.39V
T:0VR:4.62V
ON:4.91V
ON:4.92V
4.63V
3.76V
T:4.95VR:0V
3.23V
7.14V
4.93V
13.57V
4.80V
4.79V
4.98V
4.83V4.95V
ON:6.98V
7.12V
11.43V
13.8V
13.40V
4.63V
T:0VR:4.90V
5.03V
T:4.95VR:0V
T:4.99VR:0V
0.72V
0.51V
4.77V
W:115mVN:4.94V
4.42V
2.03V
T:4.31VR:0V
1.43V
T:4.86VR:0V
1.98V
10.37V
4.91V
10.56V
T:0VR:0V
4.56V
2.80V
4.30V
4.56V3.10V
3.14V
4.81V
2.30V(HIGH POWER)
T:0VR:4.90V
2.02V
Note :The components marked with adot ( ) are parts of layer1.
TH-K4AT/K4E SCHEMATIC DIAGRAM
TH-K4AT/K4E
55
BPF
Q10
Q11
Q24
Q12
Q9
BPF
Q16
Q17
0.28Vrms
IC3
ANT
-21.00dBm
FILTER
14.00dBm
5.67dBm
-36.33dBm
ANT
SP
AF(1kHz)
FM IC
-20.00dBm
-53.00dBm
7.33dBm
8.23mVrms
0.83Vrms
26.33dBm
-60.50dBm
IC6
ANT
27.50dBm
RF(435.05MHz)
-40.33dBm
50Ω
AF(1kHz)
AMP
14.17dBm
0.58Vrms
IF(38.85MHz)
0.66Vrms
9.70Vrms
MIC
ANT
-42.33dBm
vco
RF(435.05MHz)
MIC AMP
11.50dBm
FILTER
-41.17dBm
vco
IC16
-4.00dBm
LEVEL DIAGRAM
All
volta
ge le
vels
mus
t be
mea
sure
d at
Hig
h po
wer
tra
nsm
issi
on.
The
RF
and
IF s
ectio
ns a
re m
easu
red
by u
sing
a s
pect
rum
ana
lyze
r.A
fter
set
ting
the
stan
dard
(1 k
Hz,
3 k
Hz
Dev
.) de
viat
ion,
eac
h vo
ltage
of t
he A
F se
ctio
n is
mea
sure
d by
usi
ng a
n A
F V
TVM
or
osci
losc
ope.
The
leve
l for
eac
h po
int i
s m
easu
red
with
out r
emov
ing
part
s or
cut
ting
the
patt
ern.
All
volta
ge le
vels
mus
t be
mea
sure
d af
ter
sett
ing
the
AF
outp
ut v
olt-
age
at 0
.58V
rm
s.Th
e R
F an
d IF
sec
tions
are
mea
sure
d by
usi
ng a
spe
ctru
m a
naly
zer.
Eac
h vo
ltage
of
the
AF
sect
ion
is m
easu
red
by u
sing
an
AF
VTV
M o
ros
cilo
scop
e.Th
e le
vel f
or e
ach
poin
t is
mea
sure
d w
ithou
t rem
ovin
g pa
rts
or c
uttin
gth
e pa
tter
n.
Tra
nsm
itte
r S
ecti
on
Rec
eive
r S
ecti
on
TH-K4AT/K4E
56
BLOCK DIAGRAM
J3
Q23TCXO
LOOP FILTER
LPF
Q6
D1,2,3,4
Q1
Q3
SHIFT SW
OSC
12.8MHz
D74,D79
IC5
HPF
Q30
VOX AMP
Q29,D22,D27
MIC AGC
IC16
SPLATTER FILTER
LIMITTER AMP
Q27
WIDE/NARR
IC8
MPU
HVC376B
2SK508NV (52K)
2SK1830
KTC4082
2SK18302SC4617(R)2SC49191SS361RB706F-40
NJM2107F NJM2904V
DA221
TRIPLER
2nd Local
INT
S-80844 CNNBB85
IC10
RESET
IC11S-80930CNNBG80
IC15AT25160N 10SI27EEPROM
BEAT SHIFT
Q52RN1107
LCD
1SV278D6
REM,SQ,SM,BATT
DTMF/BEEP,TONE
BPF/APC
SEG0~31COM0~3
RXD,PTTE,PTTI,ENCA,ENCB,PWRSW,KIN0~4,TYPE
AFM,SPM,MICM,KAPC,FINAL,CHARGE,AFAMP,RXLED,BTDET,TXD5MS,5R,5T,5C(SAVE),VOX,KYO0~3,VUKEY
VCC,DVCCAVCC,AVRHHST(VCC),V3RESET
INTUPINTDW
CLOCKDATAEEPCSEEPDI
BSFT
X0
X1
PLLENPLLLDCLOCKDATA
BTEMP
KEY ILLMI
B30-2205-05
D42,43,46D44,47
2SK1830Q50
KEY ILLMI SW
LAMP
PTT
LAMP
MONI
D48,49RN4902
LCD ILLMI SW
Q51B30-2205-05
LCD ILLMI
DCDET
MOD
PTTIKIN4
KYO1KYO2
2SC5488
RF AMP
SIGIN
NAR
X57-675 B/3
NAR5MV
5R
5C
SHIFT
5C
Q47RN1701
TX/BUSYLED SW
TX/RX LED
B30-2156-05D40,41
B30-2157-05
5T
RXLED
5C
D24MA742
VOX DET
VOXIN
5T
5MV
VR1
5MS
VR5
VR6
TONE
TONE
KIN0~3
KYO0~3
VR6
VSS,DVSS,AVSS,AVRL
MICM
DTMF/BEEP
X57-675 C/3
H/L
H/L
D/A
A/D
PWM
X1
SWLIMITTER
PTTE/RXD
5M
X57-675 A/3
IC1
PLL IC
LMX2316TMX
TH-K4AT/K4E
57
BLOCK DIAGRAM
J4
Q24
XF1Q16
Q2 Q5
Q4,D7
LIPPLE FILTER
RF AMP RF AMP
D8, D9 Q9 Q10 Q11 Q12 D10,11
LPF
FINAL AMP ANT SW
Q58
BIAS SW
DRIVE AMPPRE-DRIVERF AMPTX/RX SW
Q17D18,D19 D20,D21
IC3
CD1
CF1
TA31136FN
FM IC IF AMP
MCF
RF AMPBPF BPF
AF AMP
IC6Q20
AF MUTE SW
Q21
AF FILTER
LPF
WIDE/NARR SW
Q22
Q15
SW
B
IC2
APC AMP
NJM2904V
Q14RN4902
APC SWAPC KILL SW
2SK1830
38.85MHz
3SK318MIXER
3SK3181SV305 1SV305
HVC1312SK34762SK25962SC4926YD
2SC4617(R)
HSC277 2SC54882SC54882SC5488
2SC4617 2SK1830 TA7368FRN2105
SW
Q132SK1830
5T
5T
38.4MHz
DE-EMPH
BATT CHARGE
Q332SB1184
(Q,R)
Q34
CHARGE SW
2SK1830
THERM DET
Q362SJ347
+
-
T
2SC5488
CT/DCS FILTER
IC17NJM2904V
5C5R
5C
5R
5R5R 5R BPF/APC
B
5R AFM AF AVR
BPF/APC
SPM
TEMP DET
TH1B57331V
2103J
5R
5R
APC V
D14RB521S-30
CHARGE
FINAL
DTMF/BEEP
SQ,SM
J2
ANT
REM
/TXD
AMP
450kHz
(R)
BATT TERMINAL7.5V Norminal(6.0 - 9.0V)
B
DC IN
13.8V Norminal(12.0 - 16.0V)
D33
PROTECT
RB051L-40
RB051L-40
PROTECT
D32
PROTECT
RB521S-30D81
VR
BPF/APC
B
PROTECT
D30RB521S-30
Q56CPH3417D261SS388SP MUTE SW
2SK1830D25MA2S111
Q31
MUTE SW
D12,D13
ANT SW
HVC131
D17HSM88AS
ANT SW
CN2
IC6D48,49D42,43,46D47,44
5MV
PROTECT
PROTECT
XC6202PB 52FR
5MS
Q55
IC9
5MS SW
2SK1830
AVR
BTDET
Q9,10,13D8,10TH1IC16Q47
5C
CPH3317 RB521S-30D36
Q57
VR1ENC
Q37, Q38
5M
11.5V
5.0V
5C SW
5.0V
RB521S-30
5T SW
5R
D35
5R SW
IC1TCXOQ4,5,6D40,41
IC4
AVR
AF/LAMP AVR
IC12Q53
RN2105
Q41
DC-IN DET
IC5Q30 RN2701
AVR
AF AMP
TK11250 CM
IC3,17D9,14Q16,17Q22,23,24
TK11250 CUCB
5MV SW
5T
2SB1184(Q,R)2SC4617(R)
RN2105
Q35
TH-K4AT/K4E
58
BC-21 (WALL CHARGER) / PB-43N (Ni-MH BATTERY PACK)
BC-21 External View
Rated output voltage ......... DC 13.8V ±5%Rated output current ......... 150mACharging time .................... Approx. 12 hours (PB-43N)
Photo is K type.
BC-21 Specifications
PB-43N External View
PB-43N Schematic diagram
T
Discharge terminal side
Rear charge terminal side
Thermister(DTN-103F3H-SYS)
T
Diode(ERB83-004)
Breaker(BBS80A2Y-01 80˚C)
Breaker(BBS70 A1N-01 70˚C)
(4N) (2N)
Thermister(DTN-103F3H-SYS)
Voltage .......................................... 7.2V (1.2V x 6)Charging current ............................ 1100mAhDimensions (Projections included) ... 58W x 100.8H x 16.8D (mm)Charger and charging time
KSC-24 (Rapid charger) ............. Approx. 60 minutesWeight ........................................... 210g
PB-43N Specifications
TH-K4AT/K4E
59
BT-14 (BATTERY CASE) / PG-4Y (PROGRAMMING INTERFACE CABLE) /MCP-1A (MEMORY CONTROL PROGRAM)
BT-14 (6 AA/LR6)
External View
PG-4Y
External View
MCP-1A
• Available free for downloading from the Kenwood website:http://www.kenwood.com/i/products/info/amateur.html
TH-K4AT/K4ESPECIFICATIONS
KENWOOD CORPORATION2967-3, Ishikawa-machi, Hachioji-shi, Tokyo 192-8525, Japan
KENWOOD U.S.A. CORPORATIONP.O. BOX 22745, 2201 East Dominguez Street, Long Beach, CA 90801-5745,U.S.A.
KENWOOD ELECTRONICS CANADA INC.6070 Kestrel Road, Mississauga, Ontario, Canada L5T 1S8
KENWOOD ELECTRONICS DEUTSCHLAND GMBHRembrücker Str. 15, 63150 Heusenstamm, Germany
KENWOOD ELECTRONICS BELGIUM N.V.Leuvensesteenweg 248 J, 1800 Vilvoorde, Belgium
KENWOOD ELECTRONICS FRANCE S.A.13, Boulevard Ney, 75018 Paris, France
KENWOOD ELECTRONICS U.K. LIMITEDKENWOOD House, Dwight Road, Watford, Herts., WD18 9EB, United Kingdom
KENWOOD ELECTRONICS EUROPE B.V.Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands
KENWOOD ELECTRONICS ITALIA S.p.A.Via G. Sirtori, 7/9 20129 Milano, Italy
KENWOOD IBERICA S.A.Bolivia, 239-08020 Barcelona, Spain
KENWOOD ELECTRONICS AUSTRALIA PTY. LTD.(A.C.N. 001 499 074)16 Giffnock Avenue, Centrecourt Estate, North Ryde, N.S.W. 2113, Australia
KENWOOD ELECTRONICS (HONG KONG) LTD.Unit 3712-3724, Level 37, Tower one Metroplaza, 223 Hing Fong Road,Kwai Fong, N.T., Hong Kong
KENWOOD ELECTRONICS TECHNOLOGIES(S) PTE LTD.Sales Marketing Division1 Ang Mo Kio Street 63, Singapore 569110
Note: All specifications (General, Transmitter and Receiver) are guaranteed within the amateur radio band.
General TH-K4AT TH-K4E
Market code M2 E
Number of memory channels 100 (50) + 8 special function memories
Antenna impedance (Connector type) 50 Ω (SMA)
Operating VoltageDC IN Jack DC 12.0 ~ 16.0 V (13.8 V nominal)
Battery terminal DC 6.0 ~ 9.0 V (7.2 V nominal)
Grounding method Negative ground
Current
Transmit with H, 13.8 V (DC IN) 1.8 A or less
Transmit with H, 7.2 V (PB-43N) 2.0 A or less
Transmit with M, 7.2 V (PB-43N) 1.5 A or less
Transmit with L, 7.2 V (PB-43N) 0.8 A or less
Receive (no signal) 100 mA or less
Battery Saver ON (Average) 30 mA or less
Usable temperature range –20° C ~ 60° C (–4° F ~ 140° F)–10° C ~ 60° C (+14° F ~ 140° F) with PB-43N
Frequency stability Within ±5 ppm (–20° C ~ 60° C)
Dimensions (W x H x D Projections not included) 58 x 110 x 28.4 mm / 2 7/16" x 4 6/16" x 1 2/16" with PB-43N58 x 110 x 29.6 mm / 2 7/16" x 4 6/16" x 1 5/32" with BT-14
weight Approx. 320 g / 11.3 oz with PB-43NApprox. 320 g / 11.3 oz with BT-14
Transmitter
Transmission Mode F3E (FM) / F2D (FM)
Frequency range 400 ~ 470 MHz 430 ~ 440 MHz
Output Power
DC-IN jack (13.8 V) H: 5.0 W (approx.) M: 1.5 W (approx.) L: 0.5 W (approx.)
PB-43N (7.2 V) H: 5.0 W (approx.) M: 1.5 W (approx.) L: 0.5 W (approx.)
BT-14 (9.0 V) H: 3.5 W (approx.) M: 1.2 W (approx.) L: 0.3 W (approx.)
Modulation Reactance
Maximum frequency deviation ±5 kHz (FM) / ±2.5 kHz (NFM)
Squrious emissions –60 dB or less (H and M power), –50 dB or less (L power)
Microphone impedance 2 kΩ
Receiver
Reception Mode F3E (FM) / F2D (FM)
Frequency range 400 ~ 470 MHz 430 ~ 440 MHz
Intermediate Frequency (IF) 1st IF : 38.85 MHz2nd IF : 450kHz
Circuit type Double super - heterodyne
Sensitivity FM (12 dB SINAD)70 cm amateur radio band: 0.18 µV or less
Squelch Sensitivity 0.13 µV or less (within 70 cm amateur radio band)
Selectivity –6 dB / 10 kHz or less–40 dB / 28 kHz or less (within 70 cm amateur radio band)
Audio output (10% distortion) 400 mW or higher (7.2 V, 8 Ω load)
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