lg_ht-303_sh32sd-s_w

MO

DEL :HT303SD(SH32SD-S/SH32SD-W

)SERVICE M

ANUAL

DVD/CD RECEIVERSERVICE MANUAL

MODEL : HT303SD(SH32SD-S/SH32SD-W)

http://biz.lgservice.com

P/NO : AFN31640743

P/NO : AFN31640741 JANUARY, 2007

JANUARY, 2007

1-1

[CONTENTS] SECTION 1. GENERAL

SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 ESD PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 SERVICE INFORMATION FOR EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7

SECTION 2. AUDIO PART AUDIO TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8 PRINTED CIRCUIT DIARGAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22

SECTION 3. DVD & AMP PART ELECTRICAL TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 DVD & AMP CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24

SECTION 4. EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 SECTION 5. SPEAKER PART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 SECTION 6. REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

1-2

SERVICING PRECAUTIONSNOTES REGARDING HANDLING OF THE PICK-UP1. 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 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/ordamage to the printed-circuit board.

3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reasonthe 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 surfaceIf there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as usedfor camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cottonswab should be used, taking care not to distort lens.

6) Never attempt to disassemble the pick-up.Spring has 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 muchof 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 dont allow contact with fingers or other exposed skin.

Magnet

How to hold the pick-up

Conductive Sheet

Cotton swab

Pressure

Pressure

SECTION 1. GENERAL

1-3

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, componentscan 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 betaken, therefore, to avoid repair or storage where the temperature or humidity is high, where strong magnet-ism 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 unit2) 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 isbecause 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 sta-

tic 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) ConductiveSheet

Resistor(1 Mohm)

Armband

1-4

ESD PRECAUTIONSElectrostatically Sensitive Devices (ESD)Some semiconductor (solid state) devices can be damaged easily by static electricity. Such componentscommonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integratedcircuits and some field-effect transistors and semiconductor chip components. The following techniques shouldbe 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 acommercially available discharging wrist strap device, which should be removed for potential shock reasonsprior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surfacesuch 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 byconductive foam, aluminum foil or comparable conductive materials).

7. Immediately before removing the protective material from the leads of a replacement ESD device, touch theprotective 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 OTHERSAFETY PRECAUTIONS.

8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motionsuch as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can gener-ate static electricity sufficient to damage an ESD device).

CAUTION. GRAPHIC SYMBOLS

THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, ISINTENDED 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 THESERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICELITERATURE.

1-5

SERVICE INFORMATION FOR EEPROM (DVD PART)

POWER ON

DVD LOGO Status (NO Disk status)

Remote control Pause key-->1-->4-->7-->2 in order.

Press number 0~9, Press charaterA~F (1~6 for a while)

Use arrow key ( ) tomove to appropriate position andmake changes

Press pause key once

Change will be applied when powerOFF-->ON.

NAME

OPT 1OPT 2OPT 3OPT 4OPT 5OPT 6OPT 7OPT 8OPT 9OPT AOPT BOPT COPT DOPT EOPT FOPT G

HEX

485523FF2205FC314D00000000000000

DETECT NEW EEPROM(OPTION EDIT SCREEN)

1-6

SERVICE INFORMATION FOR EEPROM (AMP PART)

POWER ON

FLD no disc status

Remote control 2 + Front STOPpush same timing during 5s

FLD OP-0.

Use arrow key ( ) moveto appropriate position and makechanges

Press ENTER key once

FLD write ok or up ok

Remote control 2 + Front STOPpush same timing

FLD display E2P CLR or EP CLR

Auto power off

NAME HEXOPT 1 86OPT 2 C2OPT 3 10OPT 4 00OPT 5 00

DETECT NEW EEPROM(OPTION EDIT SCREEN)

1-7

SPECIFICATIONSGENERALPower supply Refer to main labelPower consumption Refer to main labelNet Weight 2.4 kgExternal dimensions (W x H x D) 360 x 63 x 307 mmOperating conditions Temperature: 5C to 35C, Operation status: HorizontalOperating humidity 5% to 85%

CD/DVDLaser Semiconductor laser, wavelength 650 nmSignal system PAL 625/50, NTSC 525/60Frequency response (audio) 160 Hz to 18 kHzSignal-to-noise ratio (audio) More than 75 dB (1 kHz, NOP -6 dB, 20 kHz LPF/A-Filter)Dynamic range (audio) More than 70 dBHarmonic distortion (audio) 0.5 % (1 kHz, at 1W position) (20 kHz LPF)

VIDEOVideo output 1.0 V (p-p), 75 , negative sync./ SCART (TO TV)COMPONENT VIDEO OUT (Y) 1.0 V (p-p), 75 ohms, negative sync, RCA jack x 1

(Pb)/(Pr) 0.7 V (p-p), 75 ohms, RCA jack x 1

TUNERFM

Tuning Range 87.5 - 108.0 MHz or 65.0 - 74.0 MHz, 87.5 - 108.0 MHzIntermediate Frequency 10.7 MHzSignal-to Noise Ratio 60 dB (Mono)Frequency Response 160 - 8,000 Hz

AM [MW]Tuning Range 522 - 1,620 kHz or 520 - 1,720 kHzIntermediate Frequency 450 kHz

AMPLIFIERStereo mode 45W + 45W (Rated Output Power 30W, 4at 1 kHz, THD 10 %)Surround mode Front: 45W + 45W (Rated Output Power 30W, THD 10 %)

Centre*: 45WSurround*: 45W + 45W (Rated Output Power 30W, 4at 1 kHz, THD 10 %)Subwoofer*: 75W (Rated Output Power 60W, 8at 30 Hz, THD 10 %)

Inputs AUX IN, MIC

SPEAKERSFront/Center/Rear Speaker Passive Subwoofer(SH32SD-S) (SH32SD-W)

Type 1 Way1 Speaker 1 Way1 SpeakerImpedance 4 8 Frequency Response 160 - 20,000 Hz 65 - 1,500 HzSound Pressure Level 84 dB/W (1m) 87 dB/W (1m)Rated Input Power 45 W 75 WMax. Input Power 90 W 150 WNet Dimensions (W x H x D) 98 x 101 x 105 mm 181 x 351 x 278 mmNet Weight 0.52kg 3.4kg

(* Depending on the sound modesettings and the source, there maybe no sound output.)

2-1

SECTION 2. AUDIO PARTAUDIO TROUBLESHOOTING GUIDE

1. Power Supply Circuit

Insert power cord.

Check power plug and powersupply circuit.

Turn power on.

OK

No

Yes

Yes

Yes

Yes

Yes

Yes

No

No

No

No

Does red power ledturn on?

Check power supply circuit.Is power on?

Check tracking servo circuit.Does it play?

Check audio circuit.Does it outputaudio?

Check laser circuit.

Check focus circuit.

Check disc.

Does red power ledturn on?

2-2

2. Front circuit (1/2)

Power on.

Reconnect it.(Refer to notice *1)

Refer to SMPS part.

Check pattern and resoldering

Front B/D ok.

Red LED turn off?Check if

PN1301 is ok?

Is the Digitron oncorrectly?

Check if the frontpower is ok?(*2)

Check if allbuttons are ok?

Check if the remotecontrol is ok?

Check ifRM301 is ok?

Yes Yes

YesYes

Yes

Yes

No

No

No

No

No

1

2

NO

2-3

3. Front circuit (2/2)

Refer toMICOM circuit.

Check if thepower part of the

front is ok?

Check ifR345~R350

ok?

Refer to power(SMPS).No

Replace R345 ~ R350.

No

Yes

Yes

1

Resolder orReplace RM301.

Check if the powerpart of the front is ok?

Check if the remotecontrol waveform of PN3101

pin11 is ok?

Check if RM301voltage is ok(5V)?

Refer to power(SMPS).No

Check RM circuit

Refer to MICOM circuit.Yes

No

Yes

No

Yes

2

2-4 2-5

WIRING DIAGRAM

061026

2-6 2-7

BLOCK DIAGRAM

061026

061026

IMPORTANT SAFETY NOTICE

WHEN SERVICING THIS CHASSIS, UNDER NO CIR-CUMSTANCES SHOULD THE ORIGINAL DESIGN BEMODIFIED OR ALTERED WITHOUT PERMISSIONFROM THE LG CORPORA TION. ALL COMPONENTS

SHOULD BE REPLACED ONLY WITH TYPESIDENTICAL TO THOSE IN THE ORIGINAL CIR- CUIT.

SPECIAL COMPONENTS ARE SHADED ON THESCHEMATIC FOR EASY IDENTIFICATION.THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIF-

FER FROM THE ACTUAL CIRCUIT USED. THIS WAY,IMPLEMENTATION OF THE LATEST SAFETY ANDPERFORMANCE IMPROVEMENT CHANGES INTOTHE SET IS NOT DELAYED UNTIL THE NEW SERVICELITERATURE IS PRINTED.

NOTE : 1. Shaded( ) parts are critical for safety. Replace only

with specified part number.2. Voltages are DC-measured with a digital voltmeter

during Play mode.

NOTE) WarningNOTE) Parts that are shaded are criticalNOTE) With respect to risk of fire orNOTE) electricial shock.

NOTES) Symbol denotes AC ground.NOTES) Symbol denotes DC chassis ground.

2-8 2-9

CIRCUIT DIAGRAMS 1. SMPS(POWER) CIRCUIT DIAGRAM

2-10 2-11

2. -COM(MAIN) CIRCUIT DIAGRAM

061026

2-12 2-13

3. MOTOR & SERVO CIRCUIT DIAGRAM

061026

2-14 2-15

4. I/O CIRCUIT DIAGRAM

061026

2-16 2-17

5. MIC CIRCUIT DIAGRAM

061026

2-18 2-19

6. FRONT JACK CIRCUIT DIAGRAM

061026

2-20 2-21

7. FRONT CIRCUIT DIAGRAM(WITH RDS)

061026

2-22 2-23

8. FRONT CIRCUIT DIAGRAM(WITHOUT RDS)

061026

2-24 2-25

PRINTED CIRCUIT BOARD DIAGRAMS1. MAIN P.C. BOARD DIAGRAM ( TOP VIEW )

2-26 2-27

2. MAIN P.C. BOARD DIAGRAM ( BOTTOM VIEW )

2-28 2-29

3. SMPS P.C. BOARD

NOTE: WarningParts that are shaded are critical withrespect to risk of fire or electrical shock.

2-30 2-31

4. FRONT JACK P.C BOARD

5. FRONT P.C. BOARD(WITH RDS)

6. FRONT P.C. BOARD(WITHOUT RDS)

3-1

ELECTRICAL TROUBLESHOOTING GUIDE1. System operation flow

SECTION 3. DVD & AMP PART

1. Initializes SERVO, DSP & RISC registers.2. Write RISC code to SDRAM.3. Reset RISC.

Show LOGO.

Yes

Yes

YesNo

No

No

No

Tray close to closed position.

SLED moves to inner position.

1. Judge whether have disc and disc type.2. Jump to related disc reading procedure.

1. Execute Pressed Key & IR Key.2. System operation routine loop.

1. Stop Playback & Open Tray.2. Display tray open message & LOGO.

POWER ON.

Tray closed?

SLED at innerside?

RecieveOPEN/ CLOSE

Key?

ReceiveCLOSE Key?

3-2

2. Test & debug flow

Yes

Yes

Yes

Yes

No

Switch on the Power PCBA.

Replace FLASH.

Check the POWER PART.

NoCheck the POWER PART.

NoCheck the regulators or diode.

No 1. Check 27MHz system clock.2. Check system reset circuit.3. Check FLASH R/W enable signal PRD, RWR.4. Check FLASH Memory related circuit.

Check theAC voltage

Power PCBA (110Vor 220V).

UpdateFLASH

successfully?

Are 3.5V and 5V DCoutputs normal on main

PCBA?

Are theDC Voltage

outputs OK? (12V, 5.6V,3.5V, 5V,7V, 34V).

TEST.

A

3-3

A

Power On.

Check AV cableconnection to TV set.

Check connection lines between FLASH &ES8380 and the FLASH access time whetheris suitable or not.

Check connection lines betweenSDRAM(IC502) & ES8380 and the SDRAM isdamaged.

Check the related circuit of ES8380IC501 Pins133, 134, 137, 138, 139, 140.

Check the load OPEN & CLOSE switch.

Check the Tray control IO pins on ES8380.

Check the Tray control MOTOR & SERVOcircuit IC401.

Show LOGO?

DoesTray move insidewhen it is not atclosed position?

FlashMemory operates

properly?

SDRAMworks properly?

ES8380VIDEO outputs

properly?

Check AV cable connection betweenmain PCBA and loader. (MECHA)

NormalOPEN_SW,CLOSE_SW

signal?

NormalIN_SW & OUT_SW

signal?

NormalLOAD+ & LOAD-

signal?

B

3-4

B

Do not put in disc and closetray.

Does the SLEDmove to inner side when it is

at outer position?

Optical Lenshas movements forsearching Focus?

C

Check the cable connectionwith MECHA.

Check the connection line ofDRV_MUTE.

Check the related circuit of SLEGN.

Check the amp circuit on motor driver.

MotorDriver DRV_MUTE

pin is high?

MotorDriver DRV_MUTE

pin is High?

SLED+ andSLED- output

properly?

Check cable connection withpick-up head.

Check Focus connection onES8381 and motor driver.

Check the amp circuit on motor driver.

Proper Focus outputsto motor dricer?

Proper F+ & F- outputs?

Yes

YesYes

Yes

Yes

Yes

Yes

No

No

No

No

NoNo

3-5

C

Laser turns on whenreading disc?

Put disc in?

D

Check the laser power circuit onES8380 and connecting topower transistor.(Q405, Q406).

Check the related circuit on laserpower transistor.

Check the related circuit onES8380 RF signal.

Check the SPINDLE related circuiton ES8380.

Check the spindle control amp circuitof motor driver.

Laser off.

Check the RF connectionbetween IP9009 and ES8380.

Check the cable connectionbetween spindle and main PCB.

Check cable connectionbetween transistor output andpick-up head.

DVDLD orCDLD output

property?

Disc ID is correct?

Does spindle rotate?

Collectorvoltage of powertransistor is OK?

(Q405, Q406)

ProperRF signal on ES8380.

ProperSPINDLE signal on

ES8380.

SPNPSPNN output

properly?

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No No

No

No

No

No

No

No

No

3-6

D

Focus on ok?

E

Check connections betweenES8380 and pick-up head.

Check the related circuit onES8380 CD-DVDCT.

Check the TRACK connectionon ES8380 and motor driver.

Check the tracking control ampcircuit on motor driver.

Check the related circuit onES8380.

Check cable connectionon pick-up head.

Check RF signal waveform.

Check CD_DVDCT connectionbetween IP9009 and ES8380.

Propersignals on A, B, C,

D of ES8380.

Track On OK?

Disc Playback?

ProperCD-DVDCT signal

on ES8380.

ProperTRACK signalon ES8380.

TR+ & TR-output properly?

ProperCD-DVDCT signal

on ES8380.

YesYes

Yes

Yes

Yes

Yes

Yes

Yes

No No

No

No

No

No

No

3-7

E

Normal Audiooutput when disc

playback?

Check connection betweenIC701 BCK, LRCK, ADATAO.

Check the related circuit ofPWM.(Check Audio outPins 54, 55, 58, 59, 61, 62,67, 68, 70, 71, 74, 75.

Check Digital Amp circuit(IC702, IC703).

PWM ICreceived correct data

stream?

NormalPWM IC out?(IC701).

TEST END.

3-8

3. AUDIO -COM Circuit(DVD & AMP)

YES

Does CD/DVD appearat FLD?

Does AUX, SCART, OPTand FM 87.5 appear at FLD. OK

Does Loading appearat FLD?

POWER ON.

YES NO

YES

Does no Disc or Timeappear at FLD?

NO YES

NO

NO

NO

NO

NO

NO

Does it appear DVD Errorat FLD?

Refer to SMPS.

Refer to oscillator circuit.

Check IC101 resetwaveform.

Check 3.3V line.

Check power sectioncircuit.

NO

Check power part of MainB/D.

Check oscillator of X101.

Check if IC101 Pin41is high.

Check if IC101 Pin15, 16,47 are high(5V).

Check if IC101 Pin1is high.

Replace IC101.

NO

NO

Check if DVD an audiomicom insert is OK.

Check Power.

YES

Check DVD Module.

YES

Check SMPS.

YES YES

YES

YES

YES

YES

YES

3-9

DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING1. SYSTEM 27MHz CLOCK,RESET,FLASH R/W SIGNAL

1) ES8380 main clock is at 27MHz(X501)

3.8V, 27MHz

FIG 1-1

2) ES8380 reset is high active.

PWR_CTL(SYSTEM -COM)(IC101 PIN2)

5.2VA

Power Cord in

DVD_RESET(IC101 PIN 41)

MRST#(IC501 PIN 203)

FIG 1-2

3-10

2. SDRAM CLOCK

1) ES8380 main clock is at 27MHz(X501)

(IC502 PIN 38)

DCLK = 93MHz, Vp-p=2.2, Vmax=2.7V

FIG 2-1

3) Flash R/W enable signal during download(Downloading)

FRD(IC503 PIN 28)

FWR(IC503 PIN 11)

FIG 1-4

3-11

3. TRAY OPEN/CLOSE SIGNAL

1) Tray open/close waveform

OPENSW(P401 PIN3)

CLOSESW(P401 PIN4)

OPEN(IC401 PIN 1)

CLOSE(IC401 PIN 2)

FIG 3-1

2) Tray close waveform

OPENSW(P401 PIN3)

CLOSESW(P401 PIN4)

OPEN(IC401 PIN 1)

CLOSE(IC401 PIN 2)

FIG 3-2

3-12

4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION)

SLO(2.0V/1.4V/1.0V)(IC501 PIN 173)DRV_MUTE(5V) (IC401 PIN 21)

SLED+(4.7V/3.6V/1.9V)(IC401 PIN 17)

SLED-(5.3V/3.7V/2.5V)(IC401 PIN 18)

FIG 4-1

3) Tray open waveform

OPENSW(P401 PIN3)

CLOSESW(P401 PIN4)

OPEN(IC401 PIN 1)

CLOSE(IC401 PIN 2)

FIG 3-3

3-13

5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION)

FOO(1.5V/1.4V/1.3V)(IC501 PIN 172)

F+(4.0V/3.6V/3.2V)(IC401 PIN 13)

F-(4.0V/3.6V/3.2V)(IC401 PIN 14)

FIG 5-1

6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION)

DVD MDI(0V/180mV)(IC501 PIN 152)

DVDLDO501(5.0V//3.5V)(IC501 PIN 149)

CDLDO(5.0V/3.6V)(IC501 PIN 150)

FIG 6-1

3-14

F+(IC401 PIN 13)

CD_DVDCT(IC501 PIN 133)

RF(IC501 PIN 160)

FIG 7-2 (DVD)

7. DISC TYPE JUDGEMENT WAVEFORMS

F+(IC401 PIN 13)

CD_DVDCT(IC501 PIN 133)

RF(IC501 PIN 160)

FIG 7-1 (DVD)

3-15

F+(IC401 PIN 13)

CD_DVDCT(IC501 PIN 133)

RF(IC501 PIN 160)

FIG 7-3 (CD)

F+(IC401 PIN 13)

CD_DVDCT(IC501 PIN 133)

RF(IC501 PIN 160)

FIG 7-4 (CD)

3-16

CD_DVDCT(IC501 PIN 133)

FOO(IC501 PIN172)

F+(IC401 PIN 13)

F-(IC401 PIN 14)

FIG 8-2 (CD)

8. FOCUS ON WAVEFORMS

CD_DVDCT(IC501 PIN 133)

FOO(IC501 PIN172)

F+(IC401 PIN 13)

F-(IC401 PIN 14)

FIG 8-1 (DVD)

3-17

9. SPINDLE CONTROL WAVEFORMS (NO DISC CONDITION)

SPINO(1.4V/1.8V)(IC501 PIN 171)SP-(3.6V/2.4V)(IC501 PIN 156)

SP+(3.6V/4.8V)(IC501 PIN 155)

FIG 9-1

10. TRACKING CONTROL RELATED SIGNAL(System checking)

CD_DVDCT(IC501 PIN 133)

TRO(IC501 PIN 174)

TR-(IC401 PIN 12)

TR+(IC401 PIN 11)

FIG 10-1(DVD)

3-18

CD_DVDCT(IC501 PIN 133)

TRO(IC501 PIN 174)

TR-(IC401 PIN 12)

TR+(IC401 PIN 11)

FIG 10-2(CD)

11. ES8380 VIDEO OUTPUT WAVEFORMS

1) Full colorbar signal(COMPOSIT)

(IC501 PIN 110)

FIG 11-1

3-19

2) Y

(IC501 PIN 113)

FIG 11-2

1) Audio L/R

FIG 12-1

12. AUDIO OUTPUT FROM PWM IC

(IC701 PIN 1, 7)

3-20

BCK(IC501 PIN 124)

LRCK(IC501 PIN 117)

ASDATA3

2) Audio related Signal

ADATA0(IC501 PIN 118)

FIG 12-2

3-21

1)

R620 TP611orR621 TP612

2)

R618 TP609orR619 TP610

3)

R612 TP603orR613 TP604

4)

R610 TP601orR611 TP602

5)

R614 TP605orR615 TP606

6)

R616 TP607orR617 TP608

13. DVD & AMP WAVEFORMS

061026

3-23 3-24

DVD & AMP CIRCUIT DIAGRAM1. MPEG CIRCUIT DIAGRAM

061026

3-25 3-26

2. DSP & AMP CIRCUIT DIAGRAM

4-1 4-2

CABINET AND MAIN FRAME SECTION

D

AB

D

A

B

MAIN

SMPS

NOTES) THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICELITERATURE.

CC

275 465

A50

A43

280

273

283

P3502

279

273

CABLE1

465

A47 300

A46473

463

463

463

463

A26

250

A44

261

260

SECTION 4. EXPLODED VIEWS

Copyright 2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

LGE Internal Use Only

462

4-3 4-4

DECK MECHANISM EXPLODED VIEW(DP-10T)

026

001002

003

A01

020

018

014

013

017

435012

A26

019

012

440

015B

015A

015

016

A02

439

012A

012A

010

432

030

025

024

439

431435

430

021

036

A03

4-5

PACKING ACCESSORY SECTION

BATTERY808

INSTRUCTION ASSEMBLY801REMOCON900

824 ANTENNA LOOP(AM)

825 ANTENNA (FM)

BAG804

PACKING, CASING803

BOX802

PACKING, CASING803

5-1

SECTION 5. SPEAKER SECTION FRONT/CENTER/REAR SPEAKER (SH32SD-S)

852

853

850

851

WIRE84WIRE83WIRE82WIRE81WIRE80

A84A83A82A81A80 F.R SPK

F.R SPKF.L SPK CENTER SPK R.R SPK R.L SPK

F.L SPK

R.R SPKR.L SPK

CENTER SPK A80SLA80SRA80CA80FLA80FR F.R CASE Assembly

F.L CASE Assembly

R.R AssemblyR.L Assembly

CENTER Assembly

5-2

4. LHS-96SB PASSIVE SUBWOOFER SPEAKER (SH32SD-W)

951

WIRE90

953

952

954950

A90

#EV##EV##EV##EV##EV#