SERVICE MANUAL MODEL: LM-U2350A, LMS-U2350, LM-U4050A, LMS-U4050, LMS-U4050W, LM-U5050A, LMS-U5050, LMS-U5050W, LMS-U5050S
3CD CHANGER HI-FI SYSTEM
SERVICE MANUALCAUTIONBEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
MODEL: LM-U2350A, LMS-U2350 LM-U4050A, LMS-U4050, LMS-U4050W LM-U5050A, LMS-U5050, LMS-U5050W, LMS-U5050S
[CONTENTS] SECTION 1. GENERAL SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 ESD PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 SPECIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5
SECTION 2. ELECTRICAL SECTION ELECTRICAL TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 INTERNAL BLOCK DIAGRAM of ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15 SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19 WIREING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43 PRINTED CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
SECTION 3. EXPLODED VIEWS CABINET AND MAIN FRAME SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1 TAPE DECK MECHANISM (A/R & A/S : RIGHT A/R DECK) . . . . . . . . . . . . . . . . . . . . . . . . . .3-3 TAPE DECK MECHANISM (A/R & A/S : LEFT A/S DECK) . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5 CD MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
SECTION 4. SPEAKER PART SPEAKER PART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
SECTION 5. REPLACEMENT PARTS LIST REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
- 1-1 -
SECTION 1. GENERAL SERVICING PRECAUTIONSI NOTES REGARDING HANDLING OF THE PICK-UP1. Notes for transport and storage1) The pick-up should always be left in its conductive bag until immediately prior to use. 2) The pick-up should never be subjected to external pressure or impact.
Storage in conductive bag
Drop impact
2. Repair notes1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials. 2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/or damage to the printed-circuit board. 3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason the adjustment point and installation screws should absolutely never be touched. 4) Laser beams may damage the eyes! Absolutely never permit laser beams to enter the eyes! Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.
NEVER look directly at the laser beam, and dont let contact fingers or other exposed skin.
5) Cleaning the lens surface If there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as used for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cotton swab should be used, taking care not to distort this.
Pressure MagnetPressure
How to hold the pick-up Cotton swab
Conductive Sheet6) Never attempt to disassemble the pick-up. Spring by excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab. (Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.
- 1-2 -
I NOTES REGARDING COMPACT DISC PLAYER REPAIRS1. Preparations1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These components are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components can be damaged, and for that reason components should be handled with care. 2) The pick-up is composed of many optical components and other high-precision components. Care must be taken, therefore, to avoid repair or storage where the temperature of humidity is high, where strong magnetism is present, or where there is excessive dust.
2. Notes for repair1) Before replacing a component part, first disconnect the power supply lead wire from the unit 2) All equipment, measuring instruments and tools must be grounded. 3) The workbench should be covered with a conductive sheet and grounded. When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This is because there is the possibility of damage by static electricity.) 4) To prevent AC leakage, the metal part of the soldering iron should be grounded. 5) Workers should be grounded by an armband (1M ) 6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent static electricity changes in the clothing to escape from the armband. 7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin. Armband
Resistor (1 Mohm) Resistor (1 Mohm) Conductive Sheet
CLEARING MALFUNCTION You can reset your unit to initial status if malfunction occur(button malfunction, display, etc.). Using a pointed good conductor(such as driver), simply short the RESET jump wire on the inside of the volume knob for more than 3 seconds. If you reset your unit, you must reenter all its settings(stations, clock, timer) NOTE: 1. To operate the RESET jump wire, pull the volume rotary knob and release it. 2. If you wish to operate the RESET jump wire, it is necessary to unplug the power cord.VOLUME UP RESET jump wire
VOLUME KNOB
DOWN
- 1-3 -
ESD PRECAUTIONSI Electrostatically Sensitive Devices (ESD)Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated circuits and some field-effect transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity. 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed for potential shock reasons prior to applying power to the unit under test. 2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices. 4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can generate electrical charges sufficient to damage ESD devices. 5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD devices. 6. Do not remove a replacement ESD device from its protective package until immediately before you are ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive materials). 7. Immediately before removing the protective material from the leads of a replacement ESD device, touch the protective material to the chassis or circuit assembly into which the device will by installed. CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER SAFETY PRECAUTIONS. 8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ESD device).
CAUTION. GRAPHIC SYMBOLSTHE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED DANGEROUS VOLTAGE THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK. THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE.
- 1-4 -
SPECIFICATIONSSECTION[General]
MODEL
LM-U5050
LM-U4050
LM-U2350
Power supply Power consumption Weight External dimensions (W x H x D) Frequency response Signal-to-noise ratio Dynamic range Tuning Range Intermediate Frequency Signal to Noise Ratio Frequency Response Tuning Range Intermediate Frequency Signal to Noise Ratio Frequency Response Output Power
T.H.D Frequency Response Signal-to-noise ratio Tape Speed Wow Flutter F.F/REW Time Frequency Response Signal to Noise Ratio Channel Separation Erase Ratio Speaker Name Type Impedance Frequency Response Sound Pressure Level Rated Input Power Max. Input Power Net Dimensions (W x H x D) Weight Speaker Name Type Impedance Frequency Response Sound Pressure Level Rated Input Power Max. Input Power Net Dimensions (W x H x D) Weight
Refer to the back panel of the unit. 200 W 110 W 8.5 kg 280 x 370 x 400 mm 40 - 18000 Hz 75 dB 70 dB 87.5 - 108.0 MHz or 65 - 74 MHz, 87.5 - 108.0 MHz 10.7 MHz 60/55 dB 60 - 10000 Hz 522 - 1620 kHz or 520 - 1720 kHz 450 kHz 30 dB 120 - 2000 Hz Front : 270 W + 270 W (LM-U5050 model only) 250 W + 250 W (LM-U4050/U2350 model only) Surround : 110 W + 110 W (LM-U5050 model only) Subwoofer : 350 W (LM-U5050/U4050 model only) 0.7% 42 - 20000 Hz 80 dB 3000 3 % (MTT-111. NORMAL-SPEED) 0.25 % (MTT -111, JIS-WTD) 120 sec (C-60) 125 - 8000 Hz 40 dB 50 dB (P/B)/45 dB (R/P) 55dB (MTT-5511) Front speaker (L/R) Surround speaker (L/R) [LMS-U5050S] LMS-U5050 LMS-U4050/U2350 Bass Reflex 3Way 3 Speaker Bass Reflex 2Way 2Speaker 6 24 55 - 20000 Hz 60 - 20000 Hz 86 dB/W (1m) 86 dB/W (1m) 270 W 250 W 110 W 540 W 500 W 220 W 250 X 300 X 415 mm 187 X 258 X 415 mm 9.3 kg 4.3 kg Subwoofer (LMS-U5050W/U4050W) 1 Way 1 Speaker 6 45 - 15000 Hz 84 dB/W (1m) 350 W 700 W 279 X 320 X 415 mm 10.0 kg
[CD] [Tuner] [Subwoofer] [Speakers] [TAPE] [Amp] AM (MW) FM
- 1-5 -
- 1-6 -
SECTION 2. ELECTRICAL ELECTRICAL TROUBLESHOOTING GUIDEI SMPS POWER CIRCUITP-SENS PARTSMPS ASSY CN902 7PIN 5.1V CHECK
YES
NO
SMPS TROUBLESHOOTING CONSULT
MAIN PCB CN710 7PIN 5.1V CHECK
NO YESCN710 CONNECTION STATE CHECK
MAIN PCB PATTERN CUTTING AND SHORT CHECK MAIN PCB CN304 5PIN 5.1VCHECK
YESFRONT PN302 36PIN 5.1VCHECK
YESFRONT IC306(RESET IC) STATE CHECK
NO YES
IC306 INPUTVOLTAGE4V, OUTPUTVOLTAGE.2.1VSTATECHECK
U-COM IC304 26PIN 5VCHECK
IC306 KIA7042 CHANGE
VKK CHECKCN710 10PIN DC -33V CHECK
YES
NO
SMPS TROUBLESHOOTING CONSULT
IC304 51PIN VOLTAGE CHECK
- 2-1 -
MICOM (IC301) CHECK"P-SENS" CHECK
YES
NO
P-SENS TROUBLESHOOTING CONSULT
"RESET" IC304 11 PIN CHECK (HIGH LOW HIGH)
YES
NO
Q303 STATE CHECK TR "Q303" CHANGE PN302 35 PIN +5.6V(MI) CHECK MAIN CN710 6 PIN CHECK X301 CHANGE SMPS TROUBLESHOOTING CONSULT
IC304 VDD(17,46,72,90) PIN VOLTAGE CHECK
YES
NO
X301 VIBRATION SIGNAL CHECK
YES
NO
IC301 CHANGE
P-CTRL CHECKPN302 33 PIN "P-CTRL" CHECK (HIGH)
YES
NO
MICOM IC304 STATE CHECK
CN710 5 PIN CHECK
YES
NO
SMPS + MAIN BORD-TO-BORD CHECK
SMPS TROUBLESHOOTING CONSULT
- 2-2 -
MUTING TROUBLESHOOTING (MUTE STATE)Q752(A102) BASE "HIGH"
YES
NO
EXPEND IC(IC305) 5PIN HIGH STATE CHECK
YESQ752(A102)STATE CHECK
YESQ701, Q751(D1302) BASE "HIGH" CHECK Q752(A102) FAULTY IS CHANGE
YESMUTE
NO
YESEACH PART TR CHANGE
EXPEND IC(IC305/501/502) STATE16 PIN VDD VOLTAGE CHECK
YES
NOD332/D553/D551(1SS133) CHECK
3 "EXP-CLK" CHECK
YES
NO
YES
NOMICOM (IC304) 4/84/85 PIN CHECK(CLK1/2/3)
D332/D553/D551(1SS133) CHANGE
2 "EXP-DATA" CHECK
NO YESPCB PATTERN CHECK
YES
NOMICOM (IC304) 3 PIN CHECK
4 PIN ~ 15 PIN EACH PORT STATE CHECK
NO YESPCB PATTERN CHECK
YES
NOEXPEND IC FAULTY IS CHANGE
EXPEND IC OK
- 2-3 -
SPECIFIC FUNCTION MODE HAS NO SOUND (NJW1190) IC601IC201 INPUT CHECK(HEAD INPUT)"A"DECK 32,39 "B"DECK 34,37
YES
NO
DECK HEAD WIRE CONNECTION STATE CHECK
IC201 OUTPUT CHECK(5,26 PIN)
YES
NO
IC502 10PIN(PB MUTE) STATE STATE CHECK
NO 1)IC502 4PIN(REC SW) "LOW" STATE REC
IC601 3,36PIN INPUT SIGNAL CHECK
YESIC502 4PIN(REC SW) "HIGH" CHECK
YES
NO
IC601 17,22 PIN OUTPUT SIGNAL CHECK
YESIC601(NJW1190) TROUBLESHOOTING CONSULT Q212 (C) "HIGH" CHECK
YESDECK OUTPUT
NO
YESQ213 (C) "LOW" CHECK
YESIC502 2 PIN/3 PIN CHECK(DATA/CL IC502 13 PIN "REC-BAIS" HIGH CHECK
1)
YESIC502 16 PIN VDD CHECK
YESL203(4.7MH) COIL VIBRATION SIGNAL CHECK
YES YESIC502 EXPEND IC CHANGE IC601 7 /32 INPUT REC' SIGNAL CHECK
- 2-4 -
AUX
YESJK601 SIGNALINPUT CHECK
YES
IC601 5,34 PIN SIGNALINPUTCHECK
YES
NO
MAIN PCB PATTERN CHECK
IC601 17,22 PIN OUTPUT SIGNAL CHECK
YES
NO
IC601(NJW1190) TROUBLESHOOTING CONSULT
AUX OUTPUT
CD
YESCN709 1,3PIN SIGNALCHECK CD TROUBLESHOOTINGCONSULT
YESIC601 4,35PIN SIGNALINPUTCHECK
YES
NOMAIN PCB PATTERN CHECK
IC601 17,22 PIN OUTPUT SIGNAL CHECK
YESCD OUTPUT
NO
IC601(NJW1190) TROUBLESHOOTING CONSULT
- 2-5 -
TUNER
YESTU101 3 /5 SIGNAL CHECK
YES
NO
TU101 2 PIN "+9V" VOLTAGE CHECK
IC601 2,37 PIN SIGNALINPUTCHECK
YESIC601 17,22 PIN OUTPUT SIGNAL CHECK
TU101 6,7,8,9 PIN CHECK (PLL-CE, PLL-DI, CLK, PLL-DO) TUNER MODULE CHANGE
YESTUNER OUTPUT
MIC
YESCN303 7 PIN "MIC-SIGNAL" CHECK
CN303 4 MIC-SENSE CHECK
YES
NO NOPN400 3 PIN "+12V"CHECK
IC601 44 PIN SIGNAL CHECK(OW601 PATTERN)
YES
IC402 8 PIN SIGNAL INPUT CHECK
YES YESIC601 17,22 PIN OUTPUT SIGNAL CHECK
NO
MIC MUTE CHECK(Q409/ Q408)
PN400 9 "VOL-IN"CHECK
YESMIC OUTPUT
YES
NO
TR CHANGE
IC402 2 PIN SIGNAL INPUT CHECK
YESPN400 10 PIN "VOL-OUT"CHECK
- 2-6 -
IC601(NJW1190) TROUBLESHOOTINGIC601 24PIN VOLTAGE INPUT CHECK
NO YESIC601 19,20 SDA, SCA PULSE WAVE CHECK (VOL UP, DOWN TURN CHECK)
SMPS VOLTAGE CHECK CONSULT
NO YESFUNCTION INPUT PORT SIGNAL CHECK(NJW1190 TROUBLESHOOTING)
IC301 10,8PIN CHECK
IC301 TROUBLESHOOTING
YES
NO
IC601 CHANGE
IC601 17.22 PIN WAVE OUTPUT CHECK
YESIC601 OK
AMP MODULE TROUBLESHOOTINGIC501 9 PIN(AMP-PWR)HIGH CHECK
NOEXPEND IC TROUBLESHOOTING CONSULT
YESIC305 9 PIN(AMP-PWR) HIGH CHECK
YESPN702 3 PIN "PROTECTION"CHECK (HIGH LOW)
NO YESIC701 11 PIN "AMP-ON/OFF" HIGH CHECK
PROTECTION " HIGH" SMPS VOLTAGE AND AMP ON/ OFF STATE CHECK AMP MODULE CHECK : MOS FET BOTH ARE READ SHORT AMP DEAD
YESIC701 12 PIN "PROTECTION" LOW CHECK
AMP MODULE CHANGE
YESIC701 3 ,20 & 5 ,18 EACH +65V &-65V CHECK
NOSMPS TROUBLESHOOTING CONSULT - 2-7 -
YES
IC701 9 ,14 9V CHECK
NO YESIC701 10 , 13 INPUT SIGNAL CHECK SMPS TROUBLESHOOTING CONSULT
YESIC701 5 ,17 OUTPUT SIGNAL CHECK
YESOK
REC CHECK (Q252,Q202 ON :R273,R223 HIGH)IC601 24PIN VOLTAGE INPUT CHECK
YESIC401 EACH INPUTTUNER6,39.TAPE. 7.38.CD. 8.38.AUX.9.36 PIN SIGNAL INPUT CHECK
YES
NO
REC INPUTCHECK CHECK
IC201 7,24 PIN INPUT CHECK
YES
NO
INPUT LINE CHECK
IC201 10.21 PIN OUTPUT CHECK
YESL203 2,3PIN CHECK
NO
REC OUTPUTCHECK AFTER FAULTY IS ICCHANGE
YES
NO
IC202 4PIN STATECHECK
IC202 14 PIN STATESTATE CHECK
NOQ205 BASE 0.6V CHECK
VOLTAGE CHECK CONSULT
YESQ213.212 STATE STATECHECK
NO
IC202 TROUBLESHOOTING CHECK
YESDECK CHANGE
Q204 COLLECTOR LOW
NOQ203 CHANGE
Q204 CHANGE
NOOK - 2-8 -
L203 CHANGE
DUBBING CHECK ("NORMAL OR REC"//"HIGH")IC401 11,34 OUTCHECK
YESIC401 EACH INPUTTUNER6,39.TAPE. 7.38.CD.8.38.AUX.9.36PIN SIGNAL INPUT CHECK
YESIC201 7,24 PIN INPUT CHECK
NOREC INPUTCHECK CHECK
NO YESIC201 10.21PIN OUTPUT CHECK INPUT LINE CHECK
- 2-9 -
INTERNAL BLOCK DIAGRAM of ICs HA12237FBLOCK DIAGRAM
- 2-10 -
NJW1190BLOCK DIAGRAM
AF330W20FSBLOCK DIAGRAM
- 2-11 -
PIN CONFIGURATION
PIN DESCRIPTIONPin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Symbol L_DO SUBGND VDD_L L_GND VSS_L L_OUT AM_F1 L_CS VCC L_IN STANDBY P_STATE R_IN VEE R_CS AM_F2 R_OUT VSS_R R_GND VDD_R SUBGND R_DO Type O G P P O G I I P I I O I P I I G O P P G O Description L-Channel Drain Output Sub Ground L-Channel Positive supply Voltage L-Channel Signal Ground L-Channel Negative supply Voltage L-Channel Audio Output AM Mode control Input 1 L-Channel Current Sense Input Positive supply Voltage L-Channel Audio Input ON/OFF control Protection State R-Channel Audio Input Negative supply Voltage R-Channel Current Sense Input AM Mode control Input 2 R-Channel Audio Output R-Channel Negative supply Voltage R-Channel Signal Ground R-Channel Positive supply Voltage Sub Ground R-Channel Drain Output
- 2-12 -
AF350W01FSBLOCK DIAGRAM
PIN CONFIGURATION
- 2-13 -
PIN DESCRIPTIONPin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol N_DO VSS N_CS P_CS NC NC VEE STANDBY IN P_STATE VCC OUT GND SUBGND VDD P_DO Type O P I I Description NMOS Drain Output Negative supply Voltage NMOS Current Sense Input PMOS Current Sense Input
P I I O P O G G P O
Negative supply Voltage ON/OFF control Audio Input Protection State Positive supply Voltage Audio Output Signal Ground Sub Ground Positive supply Voltage PMOS Drain Output
- 2-14 -
BLOCK DIAGRAM
2-15
2-16
WMA_USB BLOCK DIAGRAM
2-17
2-18
SCHEMATIC DIAGRAMS FRONT SCHEMATIC DIAGRAM
2-19
2-20
MAIN SCHEMATIC DIAGRAM
2-21
2-22
DECK SCHEMATIC DIAGRAM
2-23
2-24
MIC SCHEMATIC DIAGRAM
2-25
2-26
USB_AUX2_H/P SCHEMATIC DIAGRAM
2-27
2-28
WOOFER AMP SCHEMATIC DIAGRAM
2-29
2-30
AMP SCHEMATIC DIAGRAM
2-31
2-32
POWER SCHEMATIC DIAGRAM
2-33
2-34
POWER SCHEMATIC DIAGRAM
2-35
2-36
SUB POWER SCHEMATIC DIAGRAM
2-37
2-38
CDP SCHEMATIC DIAGRAM
2-39
2-40
USB SCHEMATIC DIAGRAM
2-41
2-42
WIRING DIAGRAMS
2-43
2-44
PRINTED CIRCUIT DIAGRAMS MAIN P.C. BOARD
2-45
2-46
MAIN AMP P.C. BOARD
2-47
2-48
MAIN AMP P.C. BOARD
2-49
2-50
FRONT P.C. BOARD
2-51
2-52
CDP P.C. BOARD
2-53
2-54
CDP P.C. BOARD
2-55
2-56
POWER P.C. BOARD
2-57
2-58
POWER P.C. BOARD
2-59
2-60
SUB POWER P.C. BOARD
2-61
2-62
WOOFER AMP P.C. BOARD
2-63
2-64
2-65
2-66
SECTION 3. EXPLODED VIEWS CABINET AND MAIN FRAME SECTION450 A48 303 452
Caution pointA50: Headphone + MIC + USB + Main array assembly pcb.
254 250 251
A49 286
A26
288 255 252
253 267 287 A54
*OPTION290
256 258
266 450 248 260 259 265 262 261 263 274 264 450 A51 301 275 A41
450 280
257 268
279
270 272 273 271 A46 453 A47 283 A43 284 276 278 296 A00 450 305 285 302 A56 269 283
450
281 289 277 451 451 282
A52
3-1
3-2
TAPE DECK MECHANISM (A/R & A/S : RIGHT A/R DECK)
006 001 007 016 008 002 401 402 017 506 037 019 018
021 505 020LOCA. NO. A00 A01 A02 001 002 003 006 007 008 009 011 013 LG PART NO. 6720AG0009A 6768R-UP04A 6768R-EP05A 6768R-BP03D 6768R-BP03E 6768R-PP03A 6768R-QP04A 6768RZGP01A 6768R-SP01F 6768R-MP01C 6768R-SP01A 6768R-SP03A 6768R-AP01A 6768R-GP01H 6768R-AP01C 6768R-GP01J 6768R-SP01P 6768R-BP01C 6768R-LP01C 6768R-VP03A 6768R-GP03A 6768R-JP03B 6768R-JP03A 6768R-CP01B 6768R-CP01A 6768R-CP01D 6768R-WP03A 6768R-WP03B 6768R-WP01D 6768R-WP01E 6768R-WP01H 6768R-WP01F DESCRIPTION DECK,AUDIO DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS SPECIFICATION CWN42RR05 TOKYO PIGEON L-DOUBL 50-093-41285 PIGEON UNIT 50-093-41234 PIGEON HEAD ASSY 02-083-4254 PIGEON BELT/FELT C 02-083-4256 PIGEON BELT/FELT C 33-160-4309 PIGEON PRESS CASSE 50-093-41299 PIGEON MOTOR(ASSY 50-222-41226 PIGEON A/R A/R GE 01-082-4598 PIGEON SPRING CWL4 50-219-4014 PIGEON MOLD CWL44 01-081-4601 PIGEON SPRING CWL4 01-082-4686 PIGEON SPRING CRM4 50-268-3016 PIGEON ARM CWL44 50-093-4503 PIGEON GEAR CRL442 50-239-4072 PIGEON ARM CWL44 50-222-4428 PIGEON GEAR CRL442 01-081-4678 PIGEON SPRING CRL4 02-083-4188 PIGEON BELT/FELT C 50-223-4429 PIGEON PULLEY/FLYW 50-093-4748 PIGEON SOLENOID AS 50-093-4810 PIGEON GEAR ASSY C 50-093-31009 PIGEON PULLEY/FLY 50-093-4674 PIGEON PULLEY/FLYW GSE20A2005 PIGEON SCREW CWL44 GSE10A2003 PIGEON SCREW CWL44 GSL10A1704 PIGEON SCREW CWL44 GWN19S035040 PIGEON WASHER CRM 03-000-4532 PIGEON WASHER CRM4 GWP21X045020 PIGEON WASHER CWL GWP12X030040S PIGEON WASHER CW GWP23X040020 PIGEON WASHER CWL GWN21X040040 PIGEON WASHER CWL
003 402
A01
015 502 507 009 401 501 403 504 025 502 022 023
015 016 017 018 019 020 021 022 023 025 037 401 402 403 501 502 504 505
009 401
A02
011
506 507
013
3-3
3-4
TAPE DECK MECHANISM (A/R & A/S : LEFT A/R DECK)
034 021 019 007 035 008 016 017 018 020LOCA. NO. A00 A01 A03 001 002 003 006 LG PART NO. 6720AG0009A 6768R-UP04A 6768RZEP04A 6768R-BP03D 6768R-BP03E 6768R-PP03A 6768R-QP04A 6768RZGP01A 6768R-SP01F 6768R-MP01C 6768R-SP01A 6768R-SP03A 6768R-AP01A 6768R-GP01H 6768R-AP01C 6768R-GP01J 6768R-SP01P 6768R-BP01C 6768R-LP01C 6768R-VP03A 6768R-GP03A 6768R-JP03B 6768RZBP01A 6768RZLP01A 6768RZLP02A 6768R-JP03A 6768R-CP01B 6768R-CP01A 6768R-CP01D 6768R-WP03A 6768R-WP03B 6768R-WP01D 6768R-WP01E 6768R-WP01H 6768R-WP01F DESCRIPTION DECK,AUDIO DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS DECK MECHANISM PARTS SPECIFICATION CWN42RR05 TOKYO PIGEON L-DOUBL 50-093-41285 PIGEON UNIT 50-093-41238 PIGEON A/R A/R HE 02-083-4254 PIGEON BELT/FELT C 02-083-4256 PIGEON BELT/FELT C 33-160-4309 PIGEON PRESS CASSE 50-093-41299 PIGEON MOTOR(ASSY 50-222-41226 PIGEON A/R A/R GE 01-082-4598 PIGEON SPRING CWL4 50-219-4014 PIGEON MOLD CWL44 01-081-4601 PIGEON SPRING CWL4 01-082-4686 PIGEON SPRING CRM4 50-268-3016 PIGEON ARM CWL44 50-093-4503 PIGEON GEAR CRL442 50-239-4072 PIGEON ARM CWL44 50-222-4428 PIGEON GEAR CRL442 01-081-4678 PIGEON SPRING CRL4 02-083-4188 PIGEON BELT/FELT C 50-223-4429 PIGEON PULLEY/FLYW 50-093-4748 PIGEON SOLENOID AS 50-093-4810 PIGEON GEAR ASSY C 50-093-31009 PIGEON PULLEY/FLY 02-083-4232 PIGEON A/R A/R BEL 50-093-41187 PIGEON A/R A/R PU 50-223-4933 PIGEON A/R A/R PUL 50-093-4674 PIGEON PULLEY/FLYW GSE20A2005 PIGEON SCREW CWL44 GSE10A2003 PIGEON SCREW CWL44 GSL10A1704 PIGEON SCREW CWL44 GWN19S035040 PIGEON WASHER CRM 03-000-4532 PIGEON WASHER CRM4 GWP21X045020 PIGEON WASHER CWL GWP12X030040S PIGEON WASHER CW GWP23X040020 PIGEON WASHER CWL GWN21X040040 PIGEON WASHER CWL
505
003 401
022 023 033 009 401 502 501 403
015
007 008 009 011 013 015 016 017 018 019 020 021 022 023 025 033 034
025 504
009 401 011
035
A03
037 401 402 403 501 502 504 505 506 507
013
3-5
3-6
CD MECHANISM416
151
159
422 170 165 418 419 164 163 162 417 166 417 167 153 168 155 173
156
169
416
177 172 175
LOCA.NO. A26 A30 A35 151 153 155 156 159 162 163 164 165 166 167 168 169 170 172 173 175 177 184 185 186 187 416 417 418 419 421 422
PART NO 4405RCE008G 3041RBM001A 6717R-A002A 3390RB0002A 4470RB0005A 4681RBA001C 6871RF9211A 3390RB0001B 4400R-0012A 4470R-0190A 4470RB0003A 6871RZ7036A 4470RB0006A 4470RB0007A 4470RB0002A 4860RB0002B 3550R-0685A 3040RB0005A 4510RB0001A 4681RBA002A 4470RB0001A 4900RB0002A 3040SB0003A 4970RB0001A 4970RB0001B 88H-0004 88H-0002 353-025BAAA 88H-0003 6756SBX001A 353-028H
DESCRIPTION MECHANISM ASSEMBLY BASE ASSEMBLY PICK UP ASSEMBLY TRAY GEAR MOTOR ASSEMBLY PWB(PCB) ASSEMBLY,FRONT TRAY BELT GEAR GEAR PWB(PCB) ASSEMBLY,OTHERS GEAR GEAR GEAR CLAMP COVER BASE LEVER MOTOR ASSEMBLY GEAR DAMPER BASE SPRING SPRING CD MECHA PARTS CD MECHA PARTS "SCREW,DRAWING" CD MECHA PARTS CD MECHANISM PARTS SCREW
SPECIFICATION CDM-H1543 3 CD CHANGER (SPRING PU(SPRING DAMPER) SS P/UP CMS-D77SG6 SAMSUNG FRONT LOADI DISC(CDM-H1503) TRAY (CDM-H1503) HOME TRAY (CDM-H1503) MABUCHI 1503 T/D SENSOR DECK/MECHA CDM-H1503 MOLD LOAD DECK/MECHA MAIN CDM-H1503V OTH DECK/MECHA PULLEY CDM-H1503V M LOADING (CDM-H1503) CDM-H1503 UP/DW/OP/CL PU UP (CDM-H1503) PU DOWN (CDM-H1503) CAM (CDM-H1503) HOME CDM-H1503 MOLD CLAMP ASSY DECK/MECHA GUIDE MOTOR CDM-H15 MAIN (CDM-H1503) S/W CLOSE HOME LOADING (PULLEY 8.6) MAIN (CDM-H1503) HOME 3CD CHANGER MOLD RUBBER PU(CDM-H1303) COIL 3 CD CHANGER COIL 50 3CD CHANGER 3X12X12FNM 3X9X12FZMY #NAME? 3X12X10FZMY SCREW 2.6X10X10XFZMY CDM-H813 #NAME?
3-7
3-8
SECTION 4. SPEAKER SECTION MODEL: LMS-U2350, LMS-U4050, LMS-U5050850 (RIGHT) 868 (LEFT) 852 A80 853 854 855 WIRE 81
851
856 858 WIRE 80 866 869 851 870 864 865
867 (LEFT) 860 862 859 857
863
- 4-1 -
MODEL: LMS-U5050W, LMS-U4050W750
A70
WIRE 72 762
759 761 760
771 751752
WIRE 71
A75 758 757 755783
770
753772
756
754
- 4-2 -
MODEL: LMS-U5050S
A60
654 662 661 653 665 (RIGHT)
660
656
655 WIRE 63 651 650 (LEFT)
WIRE 62 WIRE 61
659
663 (RIGHT)
657 (LEFT) 658
- 4-3 -
- 4-4 -