LG LPC-LM440A Service manual

MP3/CD LOGIC DECK
CASSETTE RECORDER

SERVICE MANUAL

MODEL: LPC-LM440A

SERVICE MANUAL MODEL: LPC-LM440A

- 1-1 -

[CONTENTS]

❍ SECTION 1.GENERAL

• SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

• ESD PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

• SPECIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

• IDENTIFICATIONS OFCONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

❍ SECTION 2.ELECTRICAL SECTION

• ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

• TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

• INTERAL BLOCK DIAGRAM OF ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

• IC/TR VOLTAGE & PIN DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23

• BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27

• SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29

• WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-41

• PRINTED CIRCUIT BOARD DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43

❍ SECTION 3. EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

❍ SECTION 4. REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

- 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

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.

Resistor
(1 Mohm)

Conductive
Sheet

Resistor
(1 Mohm)

Armband

- 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]

[

TAPE

]

Power supply Refer to the back panel of the unit.

Power consumption 40W

Mass

External dimensions (W x H x D) 456 x 178 x 338 mm

Output Power 5W X 2 , 10W

Speakers

3.2Ω

X 3

Battery Operation DC 12V, 8 “D”(R20) batteries (not supplied)

Frequency response 100 - 18000 Hz

Signal-to-noise ratio 65 dB

T.H.D %

Tuning Range 87.5 -108 MHz, 65 -74 MHz or 87.5 -108 MHz

Intermediate Frequency 10.7 MHz

Antenna Telescopic antenna

Tuning Range 522 - 1620 kHz or 520 - 1720kHz

Intermediate Frequency 450 kHz

Antenna Ferrite bar antenna

Recording System 4 Tracks 2 channel stereo

Frequency Response 125 - 8000Hz

Signal to Noise Ratio 40/45dB (REC/PLAY)

Designs and specifications are subject to change without notice.

MODEL

SECTION

[Tuner]

AM

FM

(MW)

LPC-LM440A

5.1kg

0.5

- 1-6 -

❏ IDENTIFICATIONS OF CONTROLS

Front Front

- 1-7 -

Rear Panel

Remote Control

Bottom Panel

- 1-8 -

- 2-1 -

SECTION 2. ELECTRICAL

❏ ADJUSTMENTS

1.TAPE DECK ADJUSTMENT

DECK MODE TEST TAPE TEST POINT ADJUSTMENT ADJUST FOR

PLAY BACK MTT-114 L/R Output L/R Maximum

2.RECORD BIAS ADJUSTMENT

DECK MODE TEST TAPE TEST POINT ADJUSTMENT ADJUST FOR

AUTO-RVS 75KHz±5KHz

AUTO-STOP 65KHz±5KHz

3.TAPE SPEED ADJUSTMENT

DECK MODE TEST TAPE TEST POINT ADJUSTMENT ADJUST FOR

PLAYBACK MTT-111 L/R Output 3kHz±50Hz

Azimuth adjusting screw

SR490

REC MODE MTT-5511

C465 OR C415(DECK

CIRCUIT B- POINT)

L405

- 2-2 -

❏ TROUBLESHOOTING GUIDE

• CD PART

TURN ON CD

OPEN CLOSE CHECK

CONNECTOR CHECK (PN813)

“READING”

DISPLAY CHECK

CONNECTOR CHECK

(PN802,PN806)

CHECK MICOM INTERFACE

CIRCUIT (PN805)

READING OK CHECK

CONNECTOR CHECK (PN801)

CHECK PICKUP MOVEMENT

CHECK AM5810FP (IC802)

CHECK LC78690N (IC801)

CONNECTOR CHECK

(PN806 Pin1 & Pin3)

IF PLAY, AUDIO

OUTPUT CHECK

OK

YES

YES

YES

YES

NO

NO

NO

NO

NO

NO

NO

- 2-3 -

OPEN COLOSE NG

“READING ”DISLPAY CHECK (=ONLY “CD ”DISPLAY)

DOOR OPEN/CLOSE

DISLPLAY CHECK

OPEN/CLOSE S/W CHECK

DEFECTIVE CONNECTOR OR

MAIN POWER SUPPLY

DEFECTIVE IC804

DEFECTIVE MICOM OR

DSP &14P FFC CABLE

IC801 PIN=18 CHECK

“2.45V”

PICK-UP UNIT OR Q801

DEFECTIVE

MAIN B`D CHECK

Q102 “C ”➞ 4.6V)

Check Q101 “B ”4.5V

CONNECTOR LOCKING

CHECK (PN813)

AD 5V CHECK(PN805 Pin3)

CONNECTOR LOCKING CHECK

(PN801,PN805,PN802,PN806)

CHECK POWER SUPPLY

(MAIN PN251)

PN251 PIN 5=6.2V ,PIN 7=6.2V

CHECK VOLTAGE CD B`D IC804

Pin3=6.2V,Pin 2&4=3.3V

CHECK INTERFACE

WITH MICOM MAIN CN111 Pin

6,7,8,9 ,10,11,12 ,13

LASER ON

CD B`D PN801 Pin 10=1.96V

NO

NO

NO

NO

NO

NO

NO

YES

YES

YES

YES

YES

YES

- 2-4 -

READING OK CHECK (=“NO DISC ”DISPLAY)

CONNECTOR LOCKING

CHECK(PN801)

CHECK PN802 Pin3,4

(SL+,SL-)

CHECK PN801 Pin13,16

(FA-,FA+)

CHECK PN802 Pin5,6

(SP+,SP-)

CHECK PN801 Pin14,15

(TA+,TA-)

CHECK PN801 Pin10(LD)

DEFECTIVE PICKUP OR

IC802 OR IC801

DEFECTIVE PICKUP OR

IC802 OR IC801

DEFECTIVE PICK-UP OR

IC802 OR IC801

DEFECTIVE PICKUP OR

IC802 OR IC801

DEFECTIVE PICKUP OR

IC801 OR Q801

DOES SLED MOVE?

DOSE LENSE MOVE?

(UP&DOWN)

DOSE LASER LIGHT?

DOES SPINDLE ROTATE?

IS READING OK?

YES

YES

YES

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

YES

YES

A

B

C

D

E

- 2-5 -

READING OK CHECK #A(=“NO DISC ”DISPLAY)

DOSE SLIN WAVEFORM
APPEAR AT (IC802 Pin5)

DRIVE WAVE

DEFECTIVE IC801

DEFECTIVE IC802

DEFECTIVE PICK-UP

SLED MOTOR

DEFECTIVE PN802

CONNECTOR

DOSE SL+WAVEFORM

APPEAR AT(IC802 Pin13 )

SLED MOTOR WAVE

CHECK PN802

CONNECTOR LINE

YES

NO

NO

NO

NO

NO

A

- 2-6 -

READING OK CHECK #B(=“NO DISC ”DISPLAY)

DOSE FAIN WAVEFORM

APPEAR AT (IC802 Pin22)

DRIVE WAVE

DEFECTIVE IC801

DEFECTIVE IC802

DEFECTIVE PICK-UP

FOCUS ACTUATOR

DEFECTIVE PN801

CONNECTOR

DOSE FA+WAVEFORM

APPEAR AT(IC802 Pin16 )

FOCUS COIL DRIVE WAVE

CHECK PN801

CONNECTOR LINE

YES

NO

NO

NO

NO

NO

B

- 2-7 -

READING OK CHECK #C(=“NO DISC ”DISPLAY)

Q801 EMITTER VOLTAGE

CHECK .3.1V O.K

LASER CONTROL

VOLTAGE CHECK

IC801 Pin 18.2.45

DEFECTIVE IC801

DEFECTIVE IC801

DEFECTIVE Q801

DEFECTIVE PICK-UP

FOCUS ACTUATOR

DEFECTIVE PN801

CONNECTOR

Q801 VOLTAGE CHECK

.1.96V

CHECK PN801

CONNECTOR LINE

YES

YES

NO

NO

NO

NO

NO

NO

C

- 2-8 -

READING OK CHECK #D(=“NO DISC ”DISPLAY)

DOSE SPIN WAVEFORM
APPEAR AT (IC802 Pin6)

SPINDLE DRIVE WAVE

DEFECTIVE IC801

DEFECTIVE IC802

DEFECTIVE PICK-UP

SPINDLE MOTOOR

DEFECTIVE PN802

CONNECTOR

DOSE SP+WAVEFORM

APPEAR AT(IC802 Pin11)

SPINDLE MOTOR DRIVE WAVE

CHECK PN802

CONNECTOR LINE

YES

NO

NO

NO

NO

NO

D

- 2-9 -

READING OK CHECK #E(=“NO DISC ”DISPLAY)

DOSE TAIN WAVEFORM

APPEAR AT (IC801 Pin23)

TRACKING DRIVE WAVE

DEFECTIVE IC801

DEFECTIVE IC802

DEFECTIVE PICKUP

OR IC801

DEFECTIVE PN801

CONNECTOR

DOSE TA+WAVEFORM

APPEAR AT(IC802 Pin17 )

TRACKING COIL DRIVE WAVE

CHECK PN801

CONNECTOR LINE

DOSE RF SIGNAL APPEAR?

(IC801 PORT2)
WAVEFORM#6

YES

NO

NO

NO

NO

NO

E

- 2-10 -

• MAIN POWER

Main Power input (AC-cord in)

LCD Display ”Hello”

Check the Voltage-selector

110V/230V (Duble Voltage only)

Check the DC out

of C202(+)

Check the Fuse Replace the Fuse

Replace D201,D202,D203D204

Check theD901,D902,

D903,D904(POWER B`D)

Q251 Emittor Voltage

Check(.9.6V)

REPLACE Q251

REPLACE IC271

POWER SENSE

BLOCK CHECK

RESET

BLOCK CHECK

REPLACE D181,

D182,D183

REPLACE X102

REPLACE MICOM IC

(IC101 LC877480)

IC271 Vout Voltage Check(.5.2V)

Q265 Collector Voltage

Check(.5V)

Q173 Collector Voltage

Check(.4.6V)

D181,D182,D183 Cathode

Voltage Check(4.6V)

OSC CHECK(X102:9.8304MHz)

NO

NO

YES

NO

NO

NO

NO

NO

NO

NO

NO

- 2-11 -

• MUTING CIRCUIT(MUTE)

• FUNCTION MODE AUDIO ABNORMAL

Dose “HIGH ”appear at

Q601,Q651,Q256(SUB-W)“B ”

Check the “HIGH ”of the

IC101 Pin 9,47

Check the IC101

Check the pattern

Replace the Q601,Q651,

Q256

Check the signal input of PN251

“R-CH ”“L-CH ”

Check the CD B`D

Check the “LOW ”of Q601,

Q605,Q256 “E ”

MUTE

TAPE FUNCTION

Check the signal input

of IC301 Pin 3,26

Refer to “TAPE Trouble Shooting ”

CD FUNCTION

MUTECheck the signal input of

IC301 Pin 6,23

TUNER FUNCTION

Check the signal input of IC301

Pin 4,25

Refer to “Tuner Pack Trouble

Shooting ”

NO

NO

NO

NO

NO

YES

YES

YES

YES

YES

YES

YES

YES

- 2-12 -

• IC301 TROUBLESHOOTING

Check the Power supplying to

IC301 pin 1

Check the DC Output of

Q301(.6.8V)

Check the Pattern

Replace the IC301

Check the IC101

Check the Data of

IC101 pin 6,7

CD °˙TAPE Function)

Check the CLK Data of

IC301 pin 14,15

Check the IC101 Function

Selector

END

NO

NO

NO

NO

YES

YES

YES

YES

- 2-13 -

• TUNER PACK TROUBLESHOOTING

Check the Tuner Power of

PN403 Pin 2 “Tu-B+”

Check the DC output of

“HIGH ”Q231 “C ”

Check the “high ”

Q232 “B ”

Check the DC output

Q233 “E ”,pattern

CE :Chip Emable
DI :Data Input(From u-com)
DO :Data Output(to u-com)
CLK :Tuner Mode Clock

Replace Tuner pack or

Micom 35,36,37,38 Check

Is the normal?

END

NO

NO

NO

YES

YES

YES

- 2-14 -

• TAPE TROUBLESHOOTING

1) Play

Check the power supplying to

IC401 Pin16

Check the DC output

Q241 “C ”

Check the “high ”

IC101 Pin92 or Q242 “B ”

Check the pattern

Q405 “C ”Voltage Check(8.5V)

PN402 Pin 3 Voltage Check(12.5V) ➞

Q407,Q489 Check

PN402 Pin1 Pin2 Check(Normal

Speed:Q483,+10%:Q481,-10%:Q485)

Q487 “C ”Voltage Check:When solenoid is drived

Check the patternCheck(PB MUTE “Low ”REC

MUTE “High ”REC BIAS “Low ”)

Check the Deck Mecha

Replace the IC201

Replace

the Deck Mecha

Check the signal output of

IC401 Pin 5,26

NO NO

YES

NO

NO

YES

YES

- 2-15 -

2) REC

Check signal out of

IC401 Pin 10,21

Check signal in from IC301

IC301 Pin 7,22)

Replace IC301

Replace IC401

Check the signal of IC401

Pin 7,24 OR Pattern

Check REC_B+Voltage(9V)

Check the Oscillation of

Q472 “E ”

Check Q211 “E ”

Voltage(9V)

Check Q211 “E ”

Voltage(9V)

Check Q211 “E ”

Voltage(9V)

Check the signal of

R463,R413 or L402

Pin2,Pin3

Check Q405 “B ”➞“Low ”
Check Q405 “C ”➞“Low ”

Check REC_BIAS “High ”

Check Mechanism Head or

Replace Mechanism

Is the normal?

NO

NO

NO

NO

NO

NO

NO

YES

YES

YES

YES

YES

YES

- 2-16 -

• POWER IC TROUBLESHOOTING

1)2CH(L/R)

2)SUB-WOOFER

Check Signal in

IC901 Pin6,Pin8

Check IC 901 PIN10(Mode1) ➞

MAIN Vcc

Check IC 901 PIN11(SVR) ➞ MAIN Vcc/2

Check Micom port 99(Mode1_control)➞”0.6V ”

Check Q271,Q272

OUTPUT O.K

Check the IC301 Pin12,

Pin17

Check Q252,Q253

Check Signal in

IC901 Pin6,Pin8

Check the IC301 Pin12,

Pin17

Check Q252,Q253

Check Signal in

IC901 Pin9,Pin12

Check the Low-pass

Block(IC802)

Check IC802 Pin 5
Check IC802 Pin 8

Check IC 901 Pin5(Mode2)

➞

MAIN Vcc

Check Micom port

97(Mode2_control) ➞ “HIGH”

OUTPUT O.K

YES

YES

YES

YES

NO NO

NO

NO NO

NO

Check Signal in
IC601Pin3,Pin5

If head phone jack is inserted

1) Micom port 48(H/P IN) ➞ ”Low ”

2) Micom port 9(AMUTE) ➞ ”High ”

3) IC901 Pin 5&Pin10 ➞ ”Low ”

OUTPUT O.K

Check the Q601,Q651

Check IC601 Pin8(6.8V)

YES

NO

- 2-17 -

❏ INTERAL BLOCK DIAGRAM OF ICs

■ TDA8947J

• BLOCK DIAGRAM

- 2-18 -

• PINNING INFORMATION

TDA8947J

5

Mode 2

4

OUT2-

3

V

CC1

2

GND1

1

OUT1+

6

IN2+

7

SGND

8

IN1+

9

IN3+

10

Mode 1

11

SVR

12

IN4+

13

CIV

14

OUT3-

15

GND2

16

V

CC2

17

OUT4+

Table 3: Pin description

Symbol Pin Description

OUT1+ 1 non inverted loudspeaker terminal 1

GND1 2 ground channel 1

V

CC1

3 supply voltage channel 1

OUT2- 4 inverted loudspeaker terminal 2

Mode 2 5 mode selection of subwoofer (channel 3/4)

IN2+ 6 input 2

SGND 7 signal ground

IN1+ 8 input 1

IN3+ 9 input 3

Mode 1 10 mode selection input (standby, mute, operating)

SVR 11 half supply voltage decoupling (ripple rejection)

IN4+ 12 input 4

CIV 13 Common input voltage decoupling

OUT3− 14 inverted loudspeaker terminal 3

GND2 15 ground channel 2

V

CC2

16 supply voltage channel 2

OUT4+ 17 non inverted loudspeaker terminal 4

- 2-19 -

■ TDA7468D

• BLOCK DIAGRAM

- 2-20 -

• PIN CONNECTION

■ HA12237F

• BLOCK DIAGRAM

- 2-21 -

■ AM5810(Motor Driver ICs)

• BLOCK DIAGRAM

• PIN CONFIGURATION

- 2-22 -

• PIN DESCRIPTION

- 2-23 -

❏ IC/TR VOLTAGE & PIN DESCRIPTION

- 2-24 -

- 2-25 -

- 2-26 -

2-27 2-28

❏ BLOCK DIAGRAM

2-29 2-30

❏ SCHEMATIC DIAGRAMS

• MAIN SCHEMATIC DIAGRAM

2-31 2-32

• MICOM SCHEMATIC DIAGRAM

2-33 2-34

• KEY SCHEMATIC DIAGRAM

• POWER SCHEMATIC DIAGRAM

2-35 2-36

2-37 2-38

• DECK SCHEMATIC DIAGRAM

2-39 2-40

• CHIP WMA MODULE SCHEMATIC DIAGRAM

2-41 2-42

❏ WIRING DIAGRAM

2-43 2-44

❏ PRINTED CIRCUIT DIAGRAM

• MAIN P.C. BOARD

2-45 2-46

• FRONT P.C. BOARD

2-47 2-48

• CDP P.C. BOARD (COMPONENT SIDE)

2-49 2-50

• CDP P.C. BOARD (SOLDER SIDE)

2-51 2-52

• POWER P.C. BOARD

3-1 3-2

SECTION 3. EXPLODED VIEWS

284

263

264

265

450

267

269

452

452

268

452

301

A50

277

452

A46

272

452

272

282

280

281

456

289

A00

271

452

290

451

451

270

452

253

254

A26

299

255

256

453

257

258

454

286

260

261

452

260

A43

266

284

259

252

251

250

285

455

262

454

A45

A44

A41

A51

A47

274

276

275

A48

A49

288

A42

NOTE) Refer to SECTION 4 REPLACE-

MENT PARTS LIST in order to look
for the part number of each part.

Exposed blade will cause severe injury.

CAUTION

3-3 3-4

• DECK MECHANISM (LPC-LM440)

505

009

008

007

006

005

004

003

001

016

017

018

015

011

010

012

504

014

013

503

022

021

401

020

019

402

LOCA.NO. PART NO. DESCRIPTION SPECIFICATION

A00 6720AF0013A DECK,AUDIO CFM3211 TOKYO PIGEON L-SINGLE
001 6768RZQP01A DECK MECHANISM PARTS 50-093-41144 PIGEON CST MOTOR(
002 6768R-JP03A DECK MECHANISM PARTS 50-093-4674 PIGEON PULLEY/FLYW
003 6768RZGP002A DECK MECHANISM PARTS 50-093-41136 PIGEON GEAR ASSY CLUTCH
004 6768R-AP01C DECK MECHANISM PARTS 50-239-4072 PIGEON ARM CWL44
005 6768R-GP01J DECK MECHANISM PARTS 50-222-4428 PIGEON GEAR CRL442
006 6768R-SP01P DECK MECHANISM PARTS 01-081-4678 PIGEON SPRING CRL4
007 6768R-LP01C DECK MECHANISM PARTS 50-223-4429 PIGEON PULLEY/FLYW
008 6768R-BP01C DECK MECHANISM PARTS 02-083-4188 PIGEON BELT/FELT C
009 6768RZVP02A DECK MECHANISM PARTS 50-093-41073 PIGEON CST SOLENO
010 6768RZXP02A DECK MECHANISM PARTS 50-093-41076 PIGEON SPECIAL PW
011 6768R-GP03A DECK MECHANISM PARTS 50-093-4810 PIGEON GEAR ASSY C
012 6768RZJP01A DECK MECHANISM PARTS 50-093-31032 PIGEON CST PULLEY
013 6768RZHP01A DECK MECHANISM PARTS 50-093-4960 PIGEON HEAD ASSY C
014 6768R-SP01D DECK MECHANISM PARTS 01-080-4609 PIGEON SPRING CWL4
015 6768R-AP01A DECK MECHANISM PARTS 50-268-3016 PIGEON ARM CWL44
016 6768RZBP03A DECK MECHANISM PARTS 02-083-4268 PIGEON BELT/FELT B
017 6768R-GP03B DECK MECHANISM PARTS 50-222-4578 PIGEON GEAR IDLER
018 6768R-SP01F DECK MECHANISM PARTS 01-082-4598 PIGEON SPRING CWL4
019 6768R-PP03A DECK MECHANISM PARTS 33-160-4309 PIGEON PRESS CASSE
020 6768R-MP01C DECK MECHANISM PARTS 50-219-4014 PIGEON MOLD CWL44
021 6768R-SP01A DECK MECHANISM PARTS 01-081-4601 PIGEON SPRING CWL4
022 6768RZSP01A DECK MECHANISM PARTS 01-082-4688 PIGEON CST SPRING
401 6768R-CP01B DECK MECHANISM PARTS GSE20A2005 PIGEON SCREW CWL44
402 6768R-CP01A DECK MECHANISM PARTS GSE10A2003 PIGEON SCREW CWL44
501 6768R-WP01F DECK MECHANISM PARTS GWN21X040040 PIGEON WASHER CWL
502 6768R-WP03B DECK MECHANISM PARTS 03-000-4532 PIGEON WASHER CRM4
503 6768R-WP03A DECK MECHANISM PARTS GWN19S035040 PIGEON WASHER CRM
504 6768R-WP01D DECK MECHANISM PARTS GWP21X045020 PIGEON WASHER CWL
505 6768R-WP01E DECK MECHANISM PARTS GWP12X030040S PIGEON WASHER CW

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• DECK MECHANISM (LPC-LM445)

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LOCA.NO. PART NO. DESCRIPTION SPECIFICATION

A00 6720AF0014A DECK,AUDIO CRM3213 TOKYO PIGEON L-SINGLE
001 6768RZQP01A DECK MECHANISM PARTS 50-093-41144 PIGEON CST MOTOR
002 6768R-JP03A DECK MECHANISM PARTS 50-093-4674 PIGEON PULLEY/FLYW
003 6768RZGP002A DECK MECHANISM PARTS 50-093-41136 PIGEON GEAR ASSY CLUTCH
004 6768R-AP01C DECK MECHANISM PARTS 50-239-4072 PIGEON ARM CWL44
005 6768R-GP01J DECK MECHANISM PARTS 50-222-4428 PIGEON GEAR CRL442
006 6768R-SP01P DECK MECHANISM PARTS 01-081-4678 PIGEON SPRING CRL4
007 6768R-LP01C DECK MECHANISM PARTS 50-223-4429 PIGEON PULLEY/FLYW
008 6768R-BP01C DECK MECHANISM PARTS 02-083-4188 PIGEON BELT/FELT C
009 6768RZVP02A DECK MECHANISM PARTS 50-093-41073 PIGEON CST SOLENO
010 6768RZXP01A DECK MECHANISM PARTS 50-093-41073 PIGEON CST SPECIA
011 6768R-GP03A DECK MECHANISM PARTS 50-093-4810 PIGEON GEAR ASSY C
012 6768RZJP01A DECK MECHANISM PARTS 50-093-31032 PIGEON CST PULLEY
013 6768RZEP05A DECK MECHANISM PARTS 50-093-4809 PIGEON CST HEAD AS
014 6768R-SP01D DECK MECHANISM PARTS 01-080-4609 PIGEON SPRING CWL4
015 6768R-AP01A DECK MECHANISM PARTS 50-268-3016 PIGEON ARM CWL44
016 6768RZBP02A DECK MECHANISM PARTS 02-083-4267 PIGEON CST BELT/FE
017 6768R-GP03B DECK MECHANISM PARTS 50-222-4578 PIGEON GEAR IDLER
018 6768R-SP01F DECK MECHANISM PARTS 01-082-4598 PIGEON SPRING CWL4
019 6768R-PP03A DECK MECHANISM PARTS 33-160-4309 PIGEON PRESS CASSE
020 6768R-MP01C DECK MECHANISM PARTS 50-219-4014 PIGEON MOLD CWL44
021 6768R-SP01A DECK MECHANISM PARTS 01-081-4601 PIGEON SPRING CWL4
022 6768RZSP01A DECK MECHANISM PARTS 01-082-4688 PIGEON CST SPRING
401 6768R-CP01B DECK MECHANISM PARTS GSE20A2005 PIGEON SCREW CWL44
402 6768R-CP01A DECK MECHANISM PARTS GSE10A2003 PIGEON SCREW CWL44
501 6768R-WP01F DECK MECHANISM PARTS GWN21X040040 PIGEON WASHER CWL
502 6768R-WP03B DECK MECHANISM PARTS 03-000-4532 PIGEON WASHER CRM4
503 6768R-WP03A DECK MECHANISM PARTS GWN19S035040 PIGEON WASHER CRM
504 6768R-WP01D DECK MECHANISM PARTS GWP21X045020 PIGEON WASHER CWL
505 6768R-WP01E DECK MECHANISM PARTS GWP12X030040S PIGEON WASHER CW