toshiba 26wl46.a.e.t
TRANSCRIPT
WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "X-RAY RADIATION PRECAUTION", "SAFETYPRECAUTION" AND "PRODUCT SAFETY NOTICE" ON THE MANUAL FOR THIS MODEL.
CAUTION: The international hazard symbols " " in the schematic diagram and the parts list designate componentswhich have special characteristics important for safety and should be replaced only with types identical to those in theoriginal circuit or specified in the parts list. The mounting position of replacements is to be identical with originals.Before replacing any of these components, read carefully the PRODUCT SAFETY NOTICE on the MANUAL for thismodel. Do not degrade the safety of the receiver through improper servicing.
NOTE:1. RESISTOR Resistance is shown in ohm [K = 1.000, M = 1.000.000]. All resistors are 1/6W and 5% tolerance
carbon resistor, unless otherwise noted as the following marks.1/2R = Metal or Metal oxide of 1/2 watt 1/2S = Carbon compsistion of 1/2 watt1RF = Fuse resistor of 1 watt 10W = Cement of 10 wattK = ±10% G = ±2% F = ±1%
2. CAPACITOR Unless otherwise noted in schematic, all capacitor values less than 1 are expressed in µF, andthe values more than 1 in pF.All capacitors are ceramic 50V, unless otherwise noted as the following marks.
Electolytic capacitor Mylar capacitor
3. The parts indicated with " " have special characteristics, and should be replaced with identical parts only.4. Voltages read with DIGITAL MULTI-METER from point indicated to chassing ground, using a color bar signal with
all controls at normal, line voltage at 220 volts.5. Waveforms are taken receiving color bar signal with enough sensitivity.6. Voltage reading shown are nominal values and may vary ±20% except H.V.
SCHEMATIC DIAGRAM
– 63 –
MODEL : 26WL46A/26WL46E/26WL46T
SCHEMATIC DIAGRAM STRUCTURE:– SIGNAL Circuit CONNECTOR [ SHEET– 1/12 ] ................................................. 1/49
– AV [ SHEET– 2/12 ] ................................................. 2/49– Y/PB/PR_SW [ SHEET– 3/12 ] ................................................. 3/49– MICOM/TEXT [ SHEET– 4/12 ] ................................................. 4/49– V/C [ SHEET– 5/12 ] ................................................. 5/49– SIGNAL from AV [ SHEET– 6/12 ] ................................................. 6/49– PC AUDIO SWITCHING [ SHEET– 7/12 ] ................................................. 7/49– AUDIO-MUTE [ SHEET– 8/12 ] ................................................. 8/49– MON OUTPUT [ SHEET– 9/12 ] ................................................. 9/49– COLOUR DIFFERENCE SWITCHING [ SHEET– 10/12 ] ............................................. 10/49– SYNC_SW [ SHEET– 11/12 ] ............................................. 11/49– 3D YCS [ SHEET– 12/12 ] ............................................. 12/49
– TN-AOUT Circuit CONNECTOR [ SHEET– 1/7 ] ................................................. 13/49– TIF & MA [ SHEET– 2/7 ] ................................................. 14/49– AUDIO GAIN CORRECTION [ SHEET– 3/7 ] ................................................. 15/49– A-OUT [ SHEET– 4/7 ] ................................................. 16/49– HP-AMP [ SHEET– 5/7 ] ................................................. 17/49– PC_INPUT [ SHEET– 6/7 ] ................................................. 18/49– TEMP SENSOR [ SHEET– 7/7 ] ................................................. 19/49
– FRONT-AV Circuit ........................................................................................................................................................................ 20/49– AV-2 Circuit ................................................................................................................................................................................. 21/49– OVERALL CONNECTION Circuit ............................................................................................................................................... 22/49– KEY SW Circuit .......................................................................................................................................................................... 23/49– LED/RMT Circuit ........................................................................................................................................................................ 24/49– POWER SW Circuit .................................................................................................................................................................... 25/49– DATA_REWRITE Circuit ............................................................................................................................................................. 26/49– SCALER Circuit DIGITAL INPUT [ SHEET– 1/23 ] ............................................... 27/49
– CAPTURE INPUT [ SHEET– 2/23 ] ............................................... 28/49– MEMORY CONNECTION [ SHEET– 3/23 ] ............................................... 29/49– PLL [ SHEET– 4/23 ] ............................................... 30/49– IIC [ SHEET– 5/23 ] ............................................... 31/49– POWER [ SHEET– 6/23 ] ............................................... 32/49– SUB MICOM (1) [ SHEET– 7/23 ] ............................................... 33/49– SUB MICOM (2) [ SHEET– 8/23 ] ............................................... 34/49– SUB MICOM (3) [ SHEET– 9/23 ] ............................................... 35/49– LVDS OUT [ SHEET– 10/23 ] ............................................. 36/49– POWER CONNECTOR AND DIMMING [ SHEET– 11/23 ] ............................................. 37/49– LVDS POWER AND OTHERS [ SHEET– 12/23 ] ............................................. 38/49– LVDS OUT (SHARP LCD) [ SHEET– 13/23 ] ............................................. 39/49– CONNECTOR [ SHEET– 14/23 ] ............................................. 40/49– 3CHADC2_LPF [ SHEET– 15/23 ] ............................................. 41/49– 3CHADC1 [ SHEET– 16/23 ] ............................................. 42/49– DC/DC CONVERTER [ SHEET– 17/23 ] ............................................. 43/49– M2 (1) [ SHEET– 18/23 ] ............................................. 44/49– M2 (2) [ SHEET– 19/23 ] ............................................. 45/49– M2 (3) [ SHEET– 20/23 ] ............................................. 46/49– M2 (4) [ SHEET– 21/23 ] ............................................. 47/49– M2 (5) [ SHEET– 22/23 ] ............................................. 48/49– M2 (6) [ SHEET– 23/23 ] ............................................. 49/49
– 64 –
MEMO
B
LVDS
CONNECTOR
THC63LVDM83R(LVDS)TC90A94TBG
(SCALER)
128MDDR_SDRAM
MK1707STR
M30626FHPGPBEP MICOM
256KEEPROM
SDA6001
FPGA
MST9883-C3ch-A/DFilter
ICS487G-35T
13.5MHz
Ys,YmOSD_D-SIG
DATA
ADDR
A_in
B_in(PC)
RG
CbY
Cr
HD,VD,CLK
HD,VD,CLK
6.00MHz
64MSDRAM
ADDR
DATA
8MFLASH
ADDR
DATA
Cb or B
Y or G
Cr or R
Q610TA2024
A-OUT
Q630LA4525
H001 TADF-003A H002 MPSN11B/11
QS102 TIF MA QS103
UPD64084GCQD05NJM2150V
3DYCS
QV01W-OUT CXA2069Q
TV
EXT-1 AV-SW TDA9181T TA1274AF
COMBEXT-2VCD
EXT-3 OUT1
EXT-3 QS51 BA7603F(SCART) OUT2 RGB
SW
EXT-4(SCART) TA1318AF
FREQ.DETH/V
EXT-5 H/V(SCART)
M-OUTOUT3
A-OUTQS15
YFRONT-AV
EXT-6 SCART-RGB MM1519XQ(FRONT) SCART-RGB
HPSW YCbCr
orRGB
PC-INPUTRGB/HV
PC
TV-MICOM
SW
HP-AMP
BBE
R/L
W
PANEL
MODULE
H/V
L
R
SPEAKERS
CIRCUIT BLOCK DIAGRAM
(1/49)
26WL46A/26WL46E/26WL46TSIGNAL (CONNECTOR)SHEET-1/12
(2/49)
5.3
0
4.5
9.0
4.6
2.9
4.6
5.0
0
4.6
6.1
4.6
9.0
4.6
4.6
0
4.3
0
4.4
4.5
4.5
4.0
0
4.5
0
4.4
4.0
0
0
4.4
4.4
4.0
4.4
4.0
0 0
4.5
4.0
4.5
4.5 0
4.2
4.5
4.0
4.5 0
4.64.7
4.6
4.3
4.3 04.34.
5
4.5
4.5
4.5
5.0
6.5
0 12 6.5
00
6.5
3.5
5.8 0
5.8
3.5
6.5
0
0.1 0 0 0 0
5.0
5.0
5.0
5.0
2.0
5.0
0.7 0
0.7
0.7
5.0
2.0
2.0
0 2.0
5.0
5.0
2.0
0 2.0
3.2Vp-p
26WL46A/26WL46E/26WL46TSIGNAL (AV)SHEET-2/12
(3/49)
FRONT-AV (More than 32")(AV-1)
26WL46A/26WL46E/26WL46TSIGNAL (Y/PB/PR_SW)SHEET-3/12
(4/49)
0
0
5.0
0
5.0
0
0
0
5.0
5.0
0
3.5
0.2
4.5
0.2
5.0
5.0
4.9
5.0
4.9
4.4
4.3
0
5.0
0
5.0
4.6
5.0
5.0
0
2.1
2.3
3.5
5.0
5.0
0
4.3
5.0
5.0
4.7
5.0
5.0
5.0
4Vp-p
5Vp-p
5.8Vp-p
5Vp-p
5Vp-p
5Vp-p 26WL46A/26WL46E/26WL46TSIGNAL (MICOM/TEXT)SHEET-4/12
(5/49)
5.0
1.7
0
5.0
5.0
1.4
1.5
0
1.7
0
0.1
3.8
0.7
3.4
1.7
2.2
3.8
1.9
3.8
1.7
1.8
1.8
1.7
2.3
1.4
2.4
2.4
0
0.1
2.3
1.9
0.2
2.2
4.9
2.4 0
0.4
2.4
5.0
4.4
4.3
1.0
3.9
5.0
0 2.4
2.4
2.4
5.0
0 2.4
2.4
2.4
1.4Vp-p
1.8Vp-p
1.8Vp-p
26WL46A/26WL46E/26WL46TSIGNAL (V/C)SHEET-5/12
(6/49)
For Lightning
26WL46A/26WL46E/26WL46TSIGNAL (SIGNAL from AV)SHEET-6/12
(7/49)
9.0
4.9
4.9
4.9
9.0
9.0
9.0
5.2
5.2
5.2
0
0
0
26WL46A/26WL46E/26WL46TSIGNAL (PC AUDIO SWITCHING)SHEET-7/12
(8/49)
4.5 0
4.9
9.0 0
9.0
26WL46A/26WL46E/26WL46TSIGNAL (AUDIO-MUTE)SHEET-8/12
(9/49)
26WL46A/26WL46E/26WL46TSIGNAL (MON OUTPUT)SHEET-9/12
(10/49)
0
0
0
9.0
4.6
0
4.3
0
4.2
0
0
0
0
9.0
4.4
0
4.2
0
4.2
9.0
0
0
9.0
4.5
0
4.4
0
4.4
9.0
4.5
0
0
0
0 0 0 0 0
5.0
4.3
4.4
5.0 0
2.9
0 4.4
0 4.4
0 4.7
9.0
4.4
0 4.4
0 4.7
9.0
2.3Vp-p
2.5Vp-p
2.5Vp-p
DV
25
DV
24C
V24
710
V 1
u
CV
246
10V
1u
DV
23
CV
245
10V
1u
DV244, DV249, DV250, DV254UDZS-TE-17-10B
DV23-DV25DV245-DV247UDZS-TE-17-10B
26WL46A/26WL46E/26WL46TSIGNAL (COLOUR DIFFERENCE SWITCHING)SHEET-10/12
(11/49)
0.4
4.3
0
0
6.5
0
5.2
0
9.0
0
5.2
0.5
0
5.0
4.8
0.3
4.2
0
2.5
0
4.4
4.3
0
0
0
4.5
4.6
0
5.0
0.4
1.3
0
5.0
5.0
4Vp-p
5Vp-p
26WL46A/26WL46E/26WL46TSIGNAL (SYNC_SW)SHEET-11/12
(12/49)
2.500
3.33.4
000000
2.5
2.50.7
?
00003.3
2.5
3.5
02.2
2.51.1
1.5 1.31.10
00.90.70.81.3
1.1
2.5
2.5
0 2.5
3.6
0 2.5
1.3
0 0 1.4
0 0 0 0 0
26WL46A/26WL46E/26WL46TSIGNAL (3D YCS)SHEET-12/12
(13/49)
26WL46A/26WL46E/26WL46TTN-AOUT (CONNECTOR)SHEET-1/7
(14/49)
5.9
6.0
6.0
6.0
6.0
6.0
5.5
6.0
0
0
5.7
6.0
6.0
5.8
6.0
6.0
5.8
6.0
12
0
4.6
5.0
4.4
5.0
4.3
32 2.6 0 0 0
2.6
2.1
4.6
4.8
5.0
4.3
4.4
2.1
2.4
5.0
4.9 0
2.1
4.4
4.8
5.0
3.8
3.8 0 0 0
9.0
4.5
4.50 0
4.5
1.2Vp-p
Material GND
(Low Impedance Part)
GND For TUNER Peripheral and Material
26WL46A/26WL46E/26WL46TTN-AOUT (TIF & MA)SHEET-2/7
(15/49)
0 5.4
5.7
5.7
5.4
5.7
5.7 12
0 5.7
5.7
5.7
5.6
5.7
5.7 12
AUDIO GAIN CORRECTION
MA MODULE TERMINAL (#19 pin GND)
26WL46A/26WL46E/26WL46TTN-AOUT (AUDIO GAIN CORRECTION)SHEET-3/7
(16/49)
5.0
6.515.8
5.00
1.11.9
05.0
2.52.5
0
2.52.51.6
00
21.20
12
6.512126.5
126.5
126.5
0
00
The surface patterns under Q610 should be GND, and make many more through-holes between surface GNDs as much as possible.
Corresponded to shielding (should be enclosed with GND)
AUDIO OUTPUT (R / L)
(Screw : chassis GND)
26WL46A/26WL46E/26WL46TTN-AOUT (A-OUT)SHEET-4/7
(17/49)
0
1.4
1.4
3.9
8.2
3.7
0
26WL46A/26WL46E/26WL46TTN-AOUT (HP-AMP)SHEET-5/7
(18/49)
For Lightning
26WL46A/26WL46E/26WL46TTN-AOUT (PC_INPUT)SHEET-6/7
(19/49)
26WL46A/26WL46E/26WL46TTN-AOUT (TEMP SENSOR)SHEET-7/7
(20/49)
Ext
-3 (
Com
bin
e w
ith S
cart
)E
xt-2
All parts should be laid close by terminals
HEADPHONE
SIGNAL (More than 32")
26WL46A/26WL46E/26WL46TFRONT-AV
(21/49)
26WL46A/26WL46E/26WL46TAV-2
(22/49)
26WL46A/26WL46E/26WL46TOVERALL CONNECTION
(23/49)
26WL46A/26WL46E/26WL46TKEY SW
(24/49)
26WL46A/26WL46E/26WL46TLED/RMT
(25/49)
26WL46A/26WL46E/26WL46TPOWER SW
(26/49)
26WL46A/26WL46E/26WL46TDATA_REWRITE
(27/49)
26WL46A/26WL46E/26WL46TSCALER (DIGITAL INPUT)SHEET-1/23
(28/49)
26WL46A/26WL46E/26WL46TSCALER (CAPTURE INPUT)SHEET-2/23
(29/49)
26WL46A/26WL46E/26WL46TSCALER (MEMORY CONNECTION)SHEET-3/23
(30/49)
26WL46A/26WL46E/26WL46TSCALER (PLL)SHEET-4/23
(31/49)
26WL46A/26WL46E/26WL46TSCALER (IIC)SHEET-5/23
(32/49)
26WL46A/26WL46E/26WL46TSCALER (POWER)SHEET-6/23
(33/49)
26WL46A/26WL46E/26WL46TSCALER (SUB MICOM (1))SHEET-7/23
(34/49)
26WL46A/26WL46E/26WL46TSCALER (SUB MICOM (2))SHEET-8/23
(35/49)
26WL46A/26WL46E/26WL46TSCALER (SUB MICOM (3))SHEET-9/23
(36/49)
26WL46A/26WL46E/26WL46TSCALER (LVDS OUT)SHEET-10/23
(37/49)
26WL46A/26WL46E/26WL46TSCALER (POWER CONNECTOR AND DIMMING)SHEET-11/23
(38/49)
26WL46A/26WL46E/26WL46TSCALER (LVDS POWER AND OTHERS)SHEET-12/23
(39/49)
26WL46A/26WL46E/26WL46TSCALER (LVDS OUT (SHARP LCD))SHEET-13/23
(40/49)
26WL46A/26WL46E/26WL46TSCALER (CONNECTOR)SHEET-14/23
(41/49)
26WL46A/26WL46E/26WL46TSCALER (3CHADC2_LPF)SHEET-15/23
(42/49)
26WL46A/26WL46E/26WL46TSCALER (3CHADC1)SHEET-16/23
(43/49)
26WL46A/26WL46E/26WL46TSCALER (DC/DC CONVERTER)SHEET-17/23
(44/49)
26WL46A/26WL46E/26WL46TSCALER (M2 (1))SHEET-18/23
(45/49)
26WL46A/26WL46E/26WL46TSCALER (M2 (2))SHEET-19/23
(46/49)
26WL46A/26WL46E/26WL46TSCALER (M2 (3))SHEET-20/23
(47/49)
26WL46A/26WL46E/26WL46TSCALER (M2 (4))SHEET-21/23
(48/49)
26WL46A/26WL46E/26WL46TSCALER (M2 (5))SHEET-22/23
(49/49)
26WL46A/26WL46E/26WL46TSCALER (M2 (6))SHEET-23/23