LG LMS-U5050, LMS-U5050W, LMS-U5050S, LMS-U4050, LMS-U2350 User Manual

...

3CD CHANGER HI-FI SYSTEM

SERVICE MANUAL

MODEL: LM-U2350A, LMS-U2350

LM-U4050A, LMS-U4050, LMS-U4050W LM-U5050A, LMS-U5050, LMS-U5050W, LMS-U5050S

SERVICE MANUAL MODEL: LM-U2350A, LMS-U2350, LM-U4050A, LMS-U4050, LMS-U4050W, LM-U5050A, LMS-U5050, LMS-U5050W, LMS-U5050S

CAUTION

BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL.

- 1-1 -

[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

- 1-2 -

SECTION 1. GENERAL

❏ SERVICING PRECAUTIONS

■ NOTES REGARDING HANDLING OF THE PICK-UP

1. Notes for transport and storage

1) 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.

2. Repair notes

1) 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.

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.

6) 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.

Storage in conductive bag

Drop impact

NEVER look directly at the laser beam, and don’t let contact fingers or other exposed skin.

Magnet

How to hold the pick-up

Conductive Sheet

Cotton swab

Pressure

- 1-3 -

■ NOTES REGARDING COMPACT DISC PLAYER REPAIRS

1. Preparations

1) 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 repair

1) 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 Ω)

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.

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.

Resistor (1 Mohm)

Conductive Sheet

Resistor (1 Mohm)

Armband

RESET jump wire

VOLUME

VOLUME KNOB

DOWN

- 1-4 -

❏ ESD PRECAUTIONS

■ 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 sur-

face 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 SYMBOLS

THE 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.

- 1-5 -

❏ SPECIFICATIONS

[General][CD]

[Tuner]

(MW)

[

Speakers

]

[Subwoofer]

[

TAPE

]

Power supply Refer to the back panel of the unit. Power consumption 200 W 110 W

Weight 8.5 kg External dimensions (W x H x D) 280 x 370 x 400 mm Frequency response 40 - 18000 Hz Signal-to-noise ratio 75 dB Dynamic range 70 dB Tuning Range 87.5 - 108.0 MHz or 65 - 74 MHz, 87.5 - 108.0 MHz Intermediate Frequency 10.7 MHz Signal to Noise Ratio 60/55 dB Frequency Response 60 - 10000 Hz Tuning Range 522 - 1620 kHz or 520 - 1720 kHz Intermediate Frequency 450 kHz Signal to Noise Ratio 30 dB Frequency Response 120 - 2000 Hz Output Power 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)

T.H.D 0.7% Frequency Response 42 - 20000 Hz Signal-to-noise ratio 80 dB Tape Speed 3000 ± 3 % (MTT-111. NORMAL-SPEED) Wow Flutter 0.25 % (MTT -111, JIS-WTD) F.F/REW Time 120 sec (C-60) Frequency Response 125 - 8000 Hz Signal to Noise Ratio 40 dB Channel Separation 50 dB (P/B)/45 dB (R/P) Erase Ratio 55dB (MTT-5511)

Type Bass Reflex 3Way 3 Speaker Bass Reflex 2Way 2Speaker Impedance 6Ω 24Ω Frequency Response 55 - 20000 Hz 60 - 20000 Hz Sound Pressure Level 86 dB/W (1m) 86 dB/W (1m) Rated Input Power 270 W 250 W 110 W Max. Input Power 540 W 500 W 220 W Net Dimensions (W x H x D) 250 X 300 X 415 mm 187 X 258 X 415 mm Weight 9.3 kg 4.3 kg

Speaker Name

Subwoofer (LMS-U5050W/U4050W)

Type 1 Way 1 Speaker Impedance 6Ω Frequency Response 45 - 15000 Hz Sound Pressure Level 84 dB/W (1m) Rated Input Power 350 W Max. Input Power 700 W Net Dimensions (W x H x D) 279 X 320 X 415 mm Weight 10.0 kg

LM-U5050

MODEL

SECTION

LM-U4050 LM-U2350

[

Amp

]

Front speaker (L/R)

LMS-U5050 LMS-U4050/U2350

Surround speaker (L/R)

[LMS-U5050S]

Speaker Name

- 1-6 -

- 2-1 -

SECTION 2. ELECTRICAL

❏ ELECTRICAL TROUBLESHOOTING GUIDE

■ SMPS POWER CIRCUIT

P-SENS PART

VKK CHECK

SMPS ASSY CN902 ➞ 7PIN 5.1V CHECK

MAIN PCB CN710 7PIN 5.1V CHECK

MAIN PCB CN304 5PIN 5.1VCHECK

FRONT PN302 36PIN 5.1VCHECK

FRONT IC306(RESET IC)

STATE CHECK

U-COM IC304 26PIN 5VCHECK

SMPS TROUBLESHOOTING CONSULT

CN710 CONNECTION STATE CHECK

MAIN PCB PATTERN CUTTING AND

SHORT CHECK

IC306 INPUTVOLTAGE4V, OUTPUTVOLTAGE.2.1VSTATECHECK

IC306 KIA7042 CHANGE

YES

CN710 10PIN DC -33V CHECK

IC304 51PIN VOLTAGE CHECK

SMPS TROUBLESHOOTING CONSULT

YES

- 2-2 -

MICOM (IC301) CHECK

P-CTRL CHECK

"P-SENS" CHECK

"RESET" IC304 11 PIN CHECK

(HIGH

➞

LOW ➞HIGH)

X301 VIBRATION SIGNAL CHECK

IC301 CHANGE

PN302 33 PIN "P-CTRL" CHECK (HIGH)

CN710 5 PIN CHECK

SMPS TROUBLESHOOTING CONSULT

IC304 VDD(17,46,72,90) PIN VOLTAGE

CHECK

P-SENS TROUBLESHOOTING CONSULT

Q303 STATE CHECK

TR "Q303" CHANGE

SMPS TROUBLESHOOTING CONSULT

MICOM IC304 STATE CHECK

SMPS + MAIN BORD-TO-BORD CHECK

MAIN CN710 6 PIN CHECK

PN302 35 PIN +5.6V(MI) CHECK

X301 CHANGE

YES

- 2-3 -

MUTING TROUBLESHOOTING (MUTE STATE)

EXPEND IC(IC305/501/502) STATE

Q752(A102) BASE "HIGH"

Q701, Q751(D1302) BASE "HIGH"

CHECK

16 PIN VDD VOLTAGE CHECK

3 "EXP-CLK" CHECK

2 "EXP-DATA" CHECK

4 PIN ~ 15 PIN EACH PORT STATE

CHECK

EXPEND IC OK

MUTE

EXPEND IC(IC305) 5PIN HIGH STATE CHECK

Q752(A102)STATE CHECK

Q752(A102) FAULTY IS CHANGE

EACH PART TR CHANGE

D332/D553/D551(1SS133) CHECK

D332/D553/D551(1SS133) CHANGE

PCB PATTERN CHECK

MICOM (IC304) 4/84/85 PIN CHECK(CLK1/2/3)

MICOM (IC304) 3 PIN CHECK

EXPEND IC FAULTY IS CHANGE

YES

- 2-4 -

SPECIFIC FUNCTION MODE HAS NO SOUND (NJW1190) IC601

IC201 INPUT CHECK(HEAD

INPUT)"A"DECK 32,39 "B"DECK 34,37

DECK HEAD WIRE

CONNECTION STATE CHECK

IC502 10PIN(PB MUTE) STATE

STATE CHECK

IC502 4PIN(REC SW) "LOW"

STATE REC

Q212 (C) "HIGH" CHECK

Q213 (C) "LOW" CHECK

IC502 13 PIN "REC-BAIS" HIGH

CHECK

L203(4.7MH) COIL VIBRATION

SIGNAL CHECK

IC601 7 /32 INPUT REC'

SIGNAL CHECK

IC502 4PIN(REC SW) "HIGH"

CHECK

IC601(NJW1190)

TROUBLESHOOTING CONSULT

IC502 2 PIN/3 PIN

CHECK(DATA/CL

IC502 16 PIN VDD CHECK

IC502 EXPEND IC CHANGE

IC201 OUTPUT CHECK(5,26 PIN)

IC601 3,36PIN INPUT SIGNAL CHECK

IC601 17,22 PIN OUTPUT SIGNAL

CHECK

DECK OUTPUT

YES

- 2-5 -

AUX

JK601 SIGNALINPUT CHECK

IC601 5,34 PIN SIGNALINPUTCHECK

IC601 17,22 PIN OUTPUT SIGNAL

CHECK

MAIN PCB PATTERN CHECK

IC601(NJW1190)

TROUBLESHOOTING CONSULT

MAIN PCB PATTERN CHECK

IC601(NJW1190)

TROUBLESHOOTING CONSULT

AUX OUTPUT

CN709 1,3PIN SIGNALCHECK CD

TROUBLESHOOTINGCONSULT

IC601 4,35PIN SIGNALINPUTCHECK

IC601 17,22 PIN OUTPUT SIGNAL

CHECK

CD OUTPUT

YES

- 2-6 -

TUNER

TU101 3 /5 SIGNAL CHECK

IC601 2,37 PIN SIGNALINPUTCHECK

IC601 17,22 PIN OUTPUT SIGNAL

CHECK

TU101 2 PIN "+9V"

VOLTAGE CHECK

TU101 6,7,8,9 PIN CHECK

(PLL-CE, PLL-DI, CLK, PLL-DO)

TUNER MODULE CHANGE

TUNER OUTPUT

MIC

CN303 7 PIN "MIC-SIGNAL" CHECK

IC601 44 PIN SIGNAL CHECK(OW601

PATTERN)

IC601 17,22 PIN OUTPUT SIGNAL

CHECK

CN303 4 MIC-SENSE CHECK

PN400 3 PIN "+12V"CHECK

TR CHANGE

MIC MUTE CHECK(Q409/ Q408)

IC402 8 PIN SIGNAL INPUT CHECK

PN400 9 "VOL-IN"CHECK

IC402 2 PIN SIGNAL INPUT CHECK

PN400 10 PIN "VOL-OUT"CHECK

MIC OUTPUT

YES

- 2-7 -

IC601(NJW1190) TROUBLESHOOTING

IC601 24PIN VOLTAGE INPUT CHECK

IC601 19,20 SDA, SCA PULSE WAVE

CHECK (VOL UP, DOWN TURN CHECK)

IC601 17.22 PIN WAVE OUTPUT CHECK

IC601 OK

FUNCTION INPUT PORT SIGNAL

CHECK(NJW1190 TROUBLESHOOTING)

SMPS VOLTAGE CHECK CONSULT

IC301 10,8PIN CHECK

IC301 TROUBLESHOOTING

IC601 CHANGE

YES

AMP MODULE TROUBLESHOOTING

IC501 9 PIN(AMP-PWR)HIGH CHECK

EXPEND IC TROUBLESHOOTING CONSULT

PROTECTION " HIGH" ➞ SMPS VOLTAGE

AND AMP ON/ OFF STATE CHECK

AMP MODULE CHECK : MOS FET BOTH

ARE READ SHORT ➞AMP DEAD

AMP MODULE CHANGE

IC305 9 PIN(AMP-PWR) HIGH CHECK

IC701 11 PIN "AMP-ON/OFF" HIGH

CHECK

IC701 12 PIN "PROTECTION" LOW

CHECK

PN702 3 PIN "PROTECTION"CHECK

(HIGH ➞ LOW)

NONO

IC701 3 ,20 & 5 ,18 EACH +65V &-65V

CHECK

SMPS TROUBLESHOOTING CONSULT

YES

- 2-8 -

IC701 9 ,14 ±9V CHECK

IC701 10 , 13 INPUT SIGNAL CHECK

IC701 5 ,17 OUTPUT SIGNAL CHECK

SMPS TROUBLESHOOTING CONSULT

REC INPUTCHECK CHECK

INPUT LINE CHECK

IC202 4PIN STATECHECK

Q205 BASE 0.6V CHECK

VOLTAGE CHECK CONSULT

IC202 TROUBLESHOOTING CHECK

Q204 CHANGE

L203 CHANGE

Q204 COLLECTOR LOW

Q203 CHANGE

REC OUTPUTCHECK AFTER FAULTY IS ICCHANGE

YES

REC CHECK (Q252,Q202 ON :R273,R223 HIGH)

IC601 24PIN VOLTAGE INPUT CHECK

IC201 7,24 PIN INPUT CHECK

IC201 10.21 PIN OUTPUT CHECK

L203 2,3PIN CHECK

IC202 14 PIN STATESTATE CHECK

Q213.212 STATE STATECHECK

DECK CHANGE

IC401 EACH INPUTTUNER6,39.TAPE.

7.38.CD. 8.38.AUX.9.36 PIN SIGNAL INPUT CHECK

- 2-9 -

DUBBING CHECK ("NORMAL OR REC"//"HIGH")

IC401 11,34 OUTCHECK

REC INPUTCHECK CHECK

INPUT LINE CHECK

IC201 7,24 PIN INPUT CHECK

IC201 10.21PIN OUTPUT CHECK

IC401 EACH INPUTTUNER6,39.TAPE.

7.38.CD.8.38.AUX.9.36PIN SIGNAL INPUT CHECK

YES

- 2-10 -

❏ INTERNAL BLOCK DIAGRAM of ICs

• HA12237F

BLOCK DIAGRAM

- 2-11 -

• NJW1190

BLOCK DIAGRAM

• AF330W20FS

BLOCK DIAGRAM

- 2-12 -

PIN CONFIGURATION

PIN DESCRIPTION

Pin Number Symbol Type Description

1 L_DO O L-Channel Drain Output 2 SUBGND G Sub Ground 3 VDD_L P L-Channel Positive supply Voltage 4 L_GND P L-Channel Signal Ground 5 VSS_L O L-Channel Negative supply Voltage 6 L_OUT G L-Channel Audio Output 7 AM_F1 I AM Mode control Input 1 8 L_CS I L-Channel Current Sense Input 9 VCC P Positive supply Voltage 10 L_IN I L-Channel Audio Input 11 STANDBY I ON/OFF control 12 P_STATE O Protection State 13 R_IN I R-Channel Audio Input 14 VEE P Negative supply Voltage 15 R_CS I R-Channel Current Sense Input 16 AM_F2 I AM Mode control Input 2 17 R_OUT G R-Channel Audio Output 18 VSS_R O R-Channel Negative supply Voltage 19 R_GND P R-Channel Signal Ground 20 VDD_R P R-Channel Positive supply Voltage 21 SUBGND G Sub Ground 22 R_DO O R-Channel Drain Output

- 2-13 -

• AF350W01FS

BLOCK DIAGRAM

PIN CONFIGURATION

- 2-14 -

PIN DESCRIPTION

Pin Number Symbol Type Description

1 N_DO O NMOS Drain Output 2 VSS P Negative supply Voltage 3 N_CS I NMOS Current Sense Input 4 P_CS I PMOS Current Sense Input 5 NC 6 NC 7 VEE P Negative supply Voltage 8 STANDBY I ON/OFF control 9 IN I Audio Input 10 P_STATE O Protection State 11 VCC P Positive supply Voltage 12 OUT O Audio Output 13 GND G Signal Ground 14 SUBGND G Sub Ground 15 VDD P Positive supply Voltage 16 P_DO O PMOS Drain Output

2-15 2-16

❏ BLOCK DIAGRAM

2-17 2-18

❏ WMA_USB BLOCK DIAGRAM

2-19 2-20

❏ SCHEMATIC DIAGRAMS

• FRONT SCHEMATIC DIAGRAM

2-222-21

• MAIN SCHEMATIC DIAGRAM

2-23 2-24

• DECK SCHEMATIC DIAGRAM

2-262-25

• MIC SCHEMATIC DIAGRAM

2-27 2-28

• USB_AUX2_H/P SCHEMATIC DIAGRAM

2-302-29

• WOOFER AMP SCHEMATIC DIAGRAM

2-31 2-32

• AMP SCHEMATIC DIAGRAM

2-342-33

• POWER SCHEMATIC DIAGRAM

2-35 2-36

• POWER SCHEMATIC DIAGRAM

2-37 2-38

• SUB POWER SCHEMATIC DIAGRAM

2-39 2-40

• CDP SCHEMATIC DIAGRAM

2-41 2-42

• USB SCHEMATIC DIAGRAM

2-43 2-44

❏ WIRING DIAGRAMS

❏ PRINTED CIRCUIT DIAGRAMS

• MAIN P.C. BOARD

2-45 2-46

2-47 2-48

• MAIN AMP P.C. BOARD

2-49 2-50

• MAIN AMP P.C. BOARD

2-51 2-52

• FRONT P.C. BOARD

2-53 2-54

• CDP P.C. BOARD

2-55 2-56

• CDP P.C. BOARD

2-57 2-58

• POWER P.C. BOARD

2-59 2-60

• POWER P.C. BOARD

2-61 2-62

• SUB POWER P.C. BOARD

2-63 2-64

• WOOFER AMP P.C. BOARD

2-65 2-66

3-1 3-2

SECTION 3. EXPLODED VIEWS

A26

290

279

450

280

450

285

278

A52

281

451

282

277

276

A47

453

283

301

A46

275

248

A51

A56

A41

452

253

267

287

266

265

450

A54

255

251

258

250

288

303

450

A48

254

A49

256

257

270

272

273

271

A43

450

289

A00

274

269

261

262

263

264

260

268

259

450

252

286

284

302

296

305

*OPTION

Caution point

A50: Headphone + MIC + USB + Main array assembly pcb.

• CABINET AND MAIN FRAME SECTION

3-43-3

• TAPE DECK MECHANISM (A/R & A/S : RIGHT A/R DECK)

025

504

023

015

022

019

037

021

020

505

018

017

016

506

006

A01

402

008

401

001

002

003

502

507

501

502

402

401

009

401

009

011

013

A02

403

007

LOCA. NO. LG PART NO. DESCRIPTION SPECIFICATION

A00 6720AG0009A DECK,AUDIO CWN42RR05 TOKYO PIGEON L-DOUBL

A01 6768R-UP04A DECK MECHANISM PARTS 50-093-41285 PIGEON UNIT

A02 6768R-EP05A DECK MECHANISM PARTS 50-093-41234 PIGEON HEAD ASSY

001 6768R-BP03D DECK MECHANISM PARTS 02-083-4254 PIGEON BELT/FELT C

002 6768R-BP03E DECK MECHANISM PARTS 02-083-4256 PIGEON BELT/FELT C

003 6768R-PP03A DECK MECHANISM PARTS 33-160-4309 PIGEON PRESS CASSE

006 6768R-QP04A DECK MECHANISM PARTS 50-093-41299 PIGEON MOTOR(ASSY

007 6768RZGP01A DECK MECHANISM PARTS 50-222-41226 PIGEON A/R A/R GE

008 6768R-SP01F DECK MECHANISM PARTS 01-082-4598 PIGEON SPRING CWL4

009 6768R-MP01C DECK MECHANISM PARTS 50-219-4014 PIGEON MOLD CWL44

011 6768R-SP01A DECK MECHANISM PARTS 01-081-4601 PIGEON SPRING CWL4

013 6768R-SP03A DECK MECHANISM PARTS 01-082-4686 PIGEON SPRING CRM4

015 6768R-AP01A DECK MECHANISM PARTS 50-268-3016 PIGEON ARM CWL44

016 6768R-GP01H DECK MECHANISM PARTS 50-093-4503 PIGEON GEAR CRL442

017 6768R-AP01C DECK MECHANISM PARTS 50-239-4072 PIGEON ARM CWL44

018 6768R-GP01J DECK MECHANISM PARTS 50-222-4428 PIGEON GEAR CRL442

019 6768R-SP01P DECK MECHANISM PARTS 01-081-4678 PIGEON SPRING CRL4

020 6768R-BP01C DECK MECHANISM PARTS 02-083-4188 PIGEON BELT/FELT C

021 6768R-LP01C DECK MECHANISM PARTS 50-223-4429 PIGEON PULLEY/FLYW

022 6768R-VP03A DECK MECHANISM PARTS 50-093-4748 PIGEON SOLENOID AS

023 6768R-GP03A DECK MECHANISM PARTS 50-093-4810 PIGEON GEAR ASSY C

025 6768R-JP03B DECK MECHANISM PARTS 50-093-31009 PIGEON PULLEY/FLY

037 6768R-JP03A DECK MECHANISM PARTS 50-093-4674 PIGEON PULLEY/FLYW

401 6768R-CP01B DECK MECHANISM PARTS GSE20A2005 PIGEON SCREW CWL44

402 6768R-CP01A DECK MECHANISM PARTS GSE10A2003 PIGEON SCREW CWL44

403 6768R-CP01D DECK MECHANISM PARTS GSL10A1704 PIGEON SCREW CWL44

501 6768R-WP03A DECK MECHANISM PARTS GWN19S035040 PIGEON WASHER CRM

502 6768R-WP03B DECK MECHANISM PARTS 03-000-4532 PIGEON WASHER CRM4

504 6768R-WP01D DECK MECHANISM PARTS GWP21X045020 PIGEON WASHER CWL

505 6768R-WP01E DECK MECHANISM PARTS GWP12X030040S PIGEON WASHER CW

506 6768R-WP01H DECK MECHANISM PARTS GWP23X040020 PIGEON WASHER CWL

507 6768R-WP01F DECK MECHANISM PARTS GWN21X040040 PIGEON WASHER CWL

3-5 3-6

• TAPE DECK MECHANISM (A/R & A/S : LEFT A/R DECK)

016

401

018

007

035

008

015

023

019

021

034

020

505

017

403

504

025

033

502

009

401

003

501

401

011

013

009

022

A03

LOCA. NO. LG PART NO. DESCRIPTION SPECIFICATION

A00 6720AG0009A DECK,AUDIO CWN42RR05 TOKYO PIGEON L-DOUBL

A01 6768R-UP04A DECK MECHANISM PARTS 50-093-41285 PIGEON UNIT

A03 6768RZEP04A DECK MECHANISM PARTS 50-093-41238 PIGEON A/R A/R HE