LG MBD-K203Q Schematic

MODEL : MBD-K203Q (FBS203V)

SERVICE MANUAL

P/NO : AFN542679853 MARCH, 2008

KARAOKE MINI Hi-Fi SYSTEM

SERVICE MANUAL

CAUTION

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

MODEL : MBD-K203Q (FBS203V)

Website http://biz.lgservice.com

Internal Use Only

1-1

LGE Internal Use Only

[CONTENTS]

❍ SECTION 1. GENERAL

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

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

• SERVICE INFORMATION FOR EEPROM ............................................................................ 1-5

• PROGRM DOWNLOAD GUIDE ............................................................................................ 1-7

• SPECIFICATIONS .............................................................................................................. 1-11

❍ SECTION 2. EXPLODED VIEWS

• CABINET AND MAIN FRAME SECTION.............................................................................. 2-1

•

DECK MECHANISM EXPLODED VIEW................................................................................ 2-3

•

SPEAKER EXPLODED VIEW .............................................................................................. 2-5

• PACKING ACCESSORY

VIEW.............................................................................................. 2-6

❍ SECTION 3. ELECTRICAL PART

• TROUBLESHOOTING GUIDE

AUDIO PART TROUBLESHOOTING GUIDE ........................................................................ 3-1

DVD PART TROUBLESHOOTING GUIDE .......................................................................... 3-11

• WAVEFORMS OF MAJOR CHECK POINT ........................................................................ 3-19

• WIRING DIAGRAM .............................................................................................................. 3-25

• BLOCK DIAGRAM .............................................................................................................. 3-26

• CIRCUIT DIAGRAMS .......................................................................................................... 3-27

• INTERNAL BLOCK DIAGRAM OF IC ................................................................................ 3-47

• CIRCUIT VOLTAGE CHART ................................................................................................ 3-63

• PRINTED CIRCUIT DIARGAMS ........................................................................................ 3-67

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

1-2

Only for training and service purposes

LGE Internal Use Only

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 allow contact fingers or other exposed skin.

Magnet

How to hold the pick-up

Conductive Sheet

Cotton swab

Pressure

SECTION 1. GENERAL

1-3

LGE Internal Use Only

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

Only for training and service purposes

LGE Internal Use Only

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 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.

SAFETY PRECAUTIONS

1-5

LGE Internal Use Only

SERVICE INFORMATION FOR EEPROM (MICOM PART)

POWER ON

FLD no disc status

Remote control ‘2’ + Front ‘STOP’

push same timing during 5s

FLD ‘OP-0….

Use arrow key ( ) move to appropriate position and make changes

Press ENTER key once

FLD ‘write ok’

Remote control ‘2’ + Front ‘STOP’

push same timing

FLD display E2P CLR or EP CLR

Auto power off

MODEL : FBD203 NAME HEX

OPT 1 00 OPT 2 00 OPT 3 00 OPT 4 00 OPT 5 00

DETECT NEW EEPROM (OPTION EDIT SCREEN)

1-6

Only for training and service purposes

LGE Internal Use Only

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 character A~F (1~6 for a while)

Use arrow key ( ) to move to appropriate position and make changes

Press pause key once

Change will be applied when power

OFF-->ON.

NAME

OPT 1 OPT 2 OPT 3 OPT 4 OPT 5 OPT 6 OPT 7 OPT 8 OPT 9 OPT A OPT B OPT C OPT D OPT E OPT F OPT G

HEX

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

DETECT NEW EEPROM (OPTION EDIT SCREEN)

1-7

LGE Internal Use Only

PROGRM DOWNLOAD GUIDE

• AUDIO USB DOWNLOAD GUIDE

The name of the program file to download is FBD203_date.hex.

- At some PCs with the security program (Water Wall) installed, store it at the USB device, disable the security protection, and download it to the set.

Note) Do not perform any other work such as disconnecting the USB device, switching to the

other Function and turning off the power while downloading it to the set. The USB device should be disconnected after completing the download.

1. When the USB device is inserted at the USB function a after a while TV screen is displayed on the as following figure.

1-8

Only for training and service purposes

LGE Internal Use Only

2. The message “Upgrade” is displayed while downloading.

3. The power is automatically turned off when downloading is completed.

1-9

LGE Internal Use Only

• DVD USB DOWN LOAD GUIDE

The program file to download should be named as BANK30.ROM.

- The downloaded file should be modified as BANK30.ROM to use.

- At some PCs with the security program (Water Wall) installed, store BANK30.ROM at the USB

device, disable the security protection, and download it to the set.

- After safely storing BANK30. ROM at the USB device, perform the following steps.

Note) Do not perform any other work such as disconnecting the USB device, switching to the

other Function and turning off the power while downloading it to the set.

1. When the USB device is inserted at the USB functiona after a while TV screen is displayed on the as following figure.

2. When downloading is completed, the message “Completed” is displayed at the top left of the TV screen as shown at Figure(1). If the message “NO USB” is displayed as shown at Figure(2), downloading is completed.

FIG.1

FIG.2

1-10

Only for training and service purposes

LGE Internal Use Only

3. Turn on the power, press the SETUP button of the remote controller at the USB FUNCTION. When the SETUP window is displayed on the screen, move down once to select the DISPLAY menu. Go to the TV Aspect at the right menu, move to “16:9”, enter “1397139” by using the numeric key of the remote controller, and then press the Enter key. Then, the System Information screen is displayed as shown inthe following figure. If not, retry the steps at the above.

4. When Step 3 is completed, press the PAUSE KEY of the remote controller.

5. Disconnect the power code, and reconnect it after 5 seconds to complete downloading.

7. When the power is turned on again, the language selection menu is initially displayed.

After selecting the desired language, press the SELECT/ENTER.

Left Right

Down

1-11

LGE Internal Use Only

SPECIFICATIONS

General

Power supply Refer to main label. Power consumption Refer to main label. Net Weight 3.42 kg External dimensions (W x H x D) 330 x 138.5x 252.4 mm Operating conditions Temperature: 5° C to 35° C, Operation status: Horizontal Operating humidity 5% to 85%

Tuner

FM Tuning Range 87.5 - 108.0 MHz or 65.0 - 74.0 MHz, 87.5 - 108.0 MHz Intermediate Frequency 10.7 MHz AM Tuning Range 522 - 1,620 kHz or 520 - 1,720 kHz Intermediate Frequency 450 kHz

Amplifier

OUTPUT POWER 100 W + 100 W (4Ω, THD 0.5%) : MBD- K203Q

50 W + 50 W( 4Ω, THD 0.5%) : MBD- K103Q

Stereo Mode 100 W + 100 W (4Ω, THD 0.5%) : MBD- K203Q

50 W + 50 W( 4Ω, THD 0.5%) : MBD- K103Q Frequency Response 40 - 20000Hz Signal- to- noise ratio 75dB

DVD/ VCD/ CD player

Frequency response (audio) 40 - 20000 Hz Signal- to- noise ratio (audio) More than 75 dB (1 kHz) Signal- to- noise ratio (video) More than 55 dB (1 kHz) Dynamic range (audio) More than 80 dB Video output 1.0 V (p- p), 75 Ω Component Video output (Y) 1.0 V (p- p), 75 Ω

Speakers

FBS203V Type 2Way 2Speaker Impedance 4 Ω Rated Input Power 100 W Max. Input Power 200W Net Dimensions (W x H x D) 165 X 341 X 261 mm Net Weight 4.48 kg

Designs and specifications are subject to change without pior notice.

1-12

Only for training and service purposes

LGE Internal Use Only

2-1 2-2

LGE Internal Use Only

• CABINET AND MAIN FRAME SECTION

SECTION 2. EXPLODED VIEWS

453

NOTES) THE EXCLAMATION POINT WITHIN AN

EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE

B

LITERATURE.

453

A42

257

A46

A

C

MAIN

E

SCART

B

471

F

273

A43

453

CABLE2

259

FRONT

F

MIC

G

H

I

258

453

D

G

471

CABLE1

A47

C

SMPS

453

A

E

453

271

254

253

271

255

256

453

H

I

CABLE3

260

A26

272

D

270

A44

271

465

250

453

300

2-3 2-4

Only for training and service purposes

LGE Internal Use Only

DECK MECHANISM EXPLODED VIEW

1. DECK MECHANISM SECTION (DP-10)

A26

012

019

013

017

439

014

435

015

018

015B

015A

016

012

440

030

001

002

003

432

A01

A02

020

012A

010

026

A03

036

025

021

439

430

431

435

024

012A

2-5

LGE Internal Use Only

• FRONT SPEAKER (FBS203V)

SPEAKER EXPLODED VIEW

851

852

A80L

A80R

A81A

853

854

A81L

A81R

860

863

858

857

856

862

855

861

865L

865R

859

2-6

Only for training and service purposes

LGE Internal Use Only

• PACKING ACCESSORY

VIEW

808 Battery

900 Remote Control

801 Instruction Ass'y

811

Plug Ass'y, 1Way

Antenna Loop

824

827

825 Antenna

Micro Phone

832

DISC

803 Packing

804 Bag

801S

Song Book

803 Packing

802 Box

3-1

LGE Internal Use Only

1. MICOM PART CHECK I

OK OK

NO

NO NO

Replace the

related parts.

Check if output voltage

of IC101 KIA7042 is

4.3V.

YES

YES YES

Check IC100

LC87F5NC8A 4 PIN

power.

YES

Refer to SMPS

troubleshooting.

MICOM PART

HECK I

Check

CN101 6PIN

P-SENS.

NO

Check

power of both

terminals of IC101

KIA7042

Check if IC101 KIA7042 input is over 5V.

Check the

related part of IC101

KIA7042.

AUDIO ELECTRICAL TROUBLESHOOTING GUIDE

SECTION 3. ELECTRICAL PART

3-2

Only for training and service purposes

LGE Internal Use Only

2. MICOM PART CHECK II

NO

YES

Refer to SMPS

Troubleshooting.

NO

Check D101 RS1G

output is working on 5V.

Check IC103 8PIN IC100

14,55,89 PIN 5V

YES

OK

YES

Check Q102 COLLECTOR

YES

Check the related part.

Replace the related parts.

Check the working condition

X100:32.768kHz

X101:9.8304MHz

Check CN101 5PIN 5.6V

Check power

of both terminals of D101

RS1G.

YES

NO

Check Q10

EMITTER 5V and

COLLECTOR 5V

Check the related part

MICOM PART CHECK II

NO

Replace the related parts.

Check Q102 BASE

PIN 0.6V HIGH

NO

Check output power of IC101

KIA7042 is over 4.3V.

Check the

related part.

NO

Replace the related parts.

OK

YES

OK

YES

OK

3-3

LGE Internal Use Only

3. IC103 S-24CS16A01 PART CHECK

YES

81 PIN DATA 82 PIN CLK

Check the related part.

NO

Check MICOM power 5V

CHECK IC100 LC87F5NC8A

81,82 PIN

NO

Replace the related parts.

NO

Refer to micom

troubleshooting.

OK

3-4

Only for training and service purposes

LGE Internal Use Only

4. FLD DISPLAY PART CHECK

NO

YES

Refer to SMPS

Troubleshooting

NO

Replace the related part

Check P3101 assembly

F1+,F2-both terminals:over

3.7V Check power VKK:over

-28V.

YES

FLT light on?

Check

CN101 1,2,3 power.

YES

Check

P3101 connection

condition and power F1+,F2-

both terminals:over 3.7V

Check power VKK:over -28V

Check 4,5 PIN:5.6V

YES

Check

IC304 PT6324

power 50 PIN VKK:-28V

9.52 PIN +5V

YES

Check

power of each PIN.

IC100

Check→IC304

Data communication.

PIN PIN 27PIN→3PIN STB 26PIN→2PIN DO 28PIN→1PIN CLK

OK

NO

Replace the related part.

NO

Replace the related part.

NO

When 5V fails,check D321SR35

input and output power.

IC100 27 PIN→STB

28 PIN→1PIN CLK

Check Data output.

Check 26 PIN→DO

→DATA input.

YES

Check the related part

YES

Check the related part

OK

YES

FLD DISPLAY CHECK

3-5

LGE Internal Use Only

5. TOUCH-PAD PART CHECK

NO

YES

PN3A2 1PIN 5V.

NO

Replace the related part.

NO

Refer to SMPS

Troubleshooting.

Check resistance output of

line CLK :R3A2 DATA :R3A3

IC3A1

28PIN check 5V.

Check

IC3A1 8Pin,9Pin,

IC100 97Pin :CLK,

96Pin :DATA

TOUCH-PAD CHECK

YES

OK

YES

OK

YES

OK

6. PWM MODULATION PART CHECK

Check

PN102 10PIN 3.3V.

PWM MODULATION

PART CHECK

Refer to SMPS

Troubleshooting.

NO

Check if X701

12.288MHz is working.

YES

Check IC702 PS9830 VDD

PIN power (3,10,22,29,39,47,

56,65,72,87,94)Check X701

2PIN 3.3V

Replace the related part.

NO

YES

Check the

related part of

X701.

OK

NO

3-6

Only for training and service purposes

LGE Internal Use Only

NO

Check

output of IC100

LC87F5NC8A

21→PWM_CLK

22→PWM_DATA

43→PWM_REST

YES

Check IC702

PS9830 DATA input

78 PIN→DATA

79 PIN→CLK

96 PIN→REST

Check

PWM MODULATOR

output

FL:75(+)74(-)

R:71(+)70(-)

OK

Replace the related part.

NO

Check

resistance output of LINE

DATA:R797

CLK:R795 RST:R790

Refer to DVD Troubleshooting.

NO

Check DVD

ASS`Y PS9830

communication condition

(P7403)

YES

OK

Check IC702 PS9830 part.

Check resistance

output of each LINE.

NO

Check IC702

PS9830 DATA input.

OK

YES

Check IC702 PS9830

86 PIN CLK input

Replace the related part.

NO

YES

Check R791(1M)output

OK

NO

3-7

LGE Internal Use Only

7. PWM AMP PART CHECK

YES

NO

Refer to SMPS Troubleshooting.

PN102

3PIN + 13,14,15 PIN 28V.

YES

NO

Check resistance power

IC700:R702,701,726,727,724.

Check input power of IC700,

1,36,17,18,19 PIN +12V

YES

NO

Replace the related parts.

Check output LINE COIL.

POWER AMP PART CHECK

OK

Check input power IC700

34,29,26,21 PIN.

YES

Check PWM MODULATOR

input 4,6,14,16 PIN.

YES

Check POWER IC 700 34,

29,27,20 PIN output.

3-8

Only for training and service purposes

LGE Internal Use Only

8. TUNER FUNCTION PART CHECK

YES

NO

Check TUNER MODUEL

power(Check 4PIN 9V).

Check TUNER

module(TU100)is working.

YES

NO

Check IC201(CS5345) 5,14,30:5V 36,46,:3.3V

Replace the related parts

Check IC201(CS5345)

14PIN output waveform.

TUNER FUNCTION PART CHECK

OK

Check IC201(CS5345)

26,27PIN input waveform.

YES

3-9

LGE Internal Use Only

9. SMPS POWER CIRCUIT

NO

YES

Replace the fuse.

Check the FUSE

F901.

NO

YES

Check BD901,LF901,902.

NO

Check short of P9702 line.

Check short of P9701,P9702 line.

NO

Check short of P9701 line.

NO

Replace IC901,902.

Check

the DC V of C905

if DC V is over

400V.

NO

YES

Check the

DC V of C909,C903,C921

If DC V is in 14~19V

And it is steady

Check IC901,902.

YES

Check the

DC V of C981,C945.

If DC V is 6.1V.

YES

Check the

DC V of C950,C951

If DC V is in

29V.

OK

MAIN PART

3-10

Only for training and service purposes

LGE Internal Use Only

P-SENS VKK PART CHECK

NO

Check power circuit

Troubleshooting.

YES

P-SENS

Check

the PIN6 of P9702

if DC V is over

5.6V

YES

OK

NO

Check power circuit

Troubleshooting.

YES

VKK CHECK

Check

the PIN3 of P9702

if DC V is over

-30V ±1.

YES

OK

10. IPOD PART(ONLY NORTH AMERICA)

YES

NO

Check the JK3C1 13pin, 30pin.

Check the JK3C1 13pin and 30pin line.

LOADING

NO

Check the JK3C1 18pin, 19pin.

Check theJK3C1 18pin and 19pin line

OSD IPOD

TURN ON IPOD

OK

YES

OK

YES

3-11

LGE Internal Use Only

DVD ELECTRICAL TROUBLESHOOTING GUIDE

1. POWER CHECK GUIDE

YES

Does DVD

appear at FLD?

Does No DISC or

Time are appeared at

FLD?

Check Connector

(P4405,P4407,P4408).

NO

Does it

appear DVD ERROR at

FLD?

POWER ON

NO

Check an Audio Micom

Select the DVD Mode

Reconnect it.

YES

Check DVD MD Module.

Check the voltage

of each pin on PN102.

OK

3-12

Only for training and service purposes

LGE Internal Use Only

2. TEST & DEBUG FLOW

NO

Check connection lines between

FLASH & ES8390 or the FLASH

access time whether is suitable or not.

YES

Check AV cable connection

to TV set.

Show LOGO?

YESYES

Flash Memory

operates properly?

NO

Check connection lines between

SDRAM.

(IC502) & ES8390 or the SDRAM is

damaged.

YES

SDRAM works

properly?

NO

Check the related circuit of

ES8390 (IC501)

PIN80,83,84,85

YES

ES8390 VIDEO

outputs properly?

NO

Check the MD mecha

Check the cable connection between

DVD PCB and MD (MECHA).

Does DISC was

inserted inside when

you push Disc1~5

button?

YESYES

SW5 & SW7 signals on PN4402 are OK?

NO

Check the output signal of

ES8390 to IC401 for control

OPEN/CLOSE.

YES

OPEN / CLOSE

signals on IC401 are

OK?

NO

Check the Tray control I/O

Pin on IC401.

YES

Load+ & load- signals

on PN4402 are OK?

POWER ON

A

3-13

LGE Internal Use Only

NO

YES

Check the MD

YES

Check the related circuit of SLED

and Motor driver IC ( IC401)

YES

Check the cable connection

with MECHA.

Do not put in disc and

tray close.

Does the

SLED move to inner side

when it is at outer

position?

YESYES

Motor Drive

DRV_MUTE pin

is high?

YES

SLED signal is OK?

NO

Check Focus connection on

ES8390 and motor driver IC.

Check cable connection

with pick-up head.

Optical

Lens is moving

for searching Focus?

YESYES

Proper

Focus outputs

to motor driver?

NO

Check the motor driver (IC401).

YES

Proper F+ & F-outputs?

A

B

3-14

Only for training and service purposes

LGE Internal Use Only

NO

Check the laser power circuit between

ES8390 and power transistor.

(Q405, Q406)

YES

Check cable connection

between PN4401 and pick-up head.

Put disc in SLOT.

Laser turns on

when reading

disc?

YESYES

DVDLD or CDLD

output properly?

NO

Check the related circuit of laser

power transistor.

YES

Collector

voltage of power transistor

is ok? (Q405, Q406)

NO

Check the SPINDLE related

circuit on ES8390

NO

Laser off.

Check the cable connection

between PN4401 and MD.

Does SPINDLE

rotate?

YES

Proper SPINDLE

signal on ES8390.

NO

Check the SPINDLE control of

motor driver IC401.

SPIN+&SPIN- output

properly?

B

C

3-15

LGE Internal Use Only

NO

Check the connections between

PN4401 and pick-up head.

YES

Check cable connection

between PN4401 and MD.

Focus On OK?

YESYES

Proper signal on

A,B,C,D from MD?

NO

Check the related circuit of

ES8390 FOCUS signal.

YES

Proper FOD signal on

IC401?

NO

Check the related circuit

between IC401 and ES8390.

Check cable connection on

pick-up head.

Tracking OK?

YES

Proper TRD signal on

IC401?

NO

Check the Tracking control

on motor driver (IC401).

T+ & T- output

properly?

NO

Check RF signal waveform.

Disc play?

C

D

3-16

Only for training and service purposes

LGE Internal Use Only

NO

Check the SERIAL RESISTOR

between ES8390 and IC702.

YES

Check the IC702.

All

outputs are Ok

during playing

DISK ?

YESYES

Audio signal data on

ES8390 is OK?

NO

For example composite video ,

Check the video mute TR

(Q501), Output of Video buffer

IC (IC507) and ES8390

video signal data.

Picture

signal data on

ES8390 is OK?

D

TEST END

3-17

LGE Internal Use Only

3. USB PART

YES

NO

Check the POWER supply circuit.

(Check PN102)

Check the HRST#signal.

Check the HRST#signal.Check the USB PART

and DVD PART line.

"Checking" or

"USB" Display check.

YES

NO

Check the USB JACK POWER supply.

(Check PN205)

Check the USB DATA LINE. (PN205)

Reading OK check.

YES

Check the ES8390.

Check DATA LINE PIN 91(USB-No)90(USB-Po)

TURN ON USB

OK

3-18

Only for training and service purposes

LGE Internal Use Only

3-19

LGE Internal Use Only

WAVEFORMS OF MAJOR CHECK POINT

1. WHEN POWER ON, RESET & DATA ETC WAVEFORM

2. WHEN USB FUNCTION OPERATING

1

2 1

3

2

4

1

2

3

4

1

2

IC501

RESET(DVD)

SPI_CS3

DI

DO

5V

D+

D-

3-20

Only for training and service purposes

LGE Internal Use Only

3. OPEN/CLOSE WAVEFORM AT POWER ON (OPEN AND CLOSE)

1

2

1

2

4. STARTING ACTION WAVEFORM IN MD DEVICE (SLED HOME)

1

2

3

1

2

3

OPEN(High/Low)

CLOSE(Low/Low)

SLO (from MPEG)

SLED-

SLED+

IC501

3-21

LGE Internal Use Only

FOCUS WAVEFORM (IN CASE OF CD-RW)

1

2

3

4

TE

PI

FOD

FE

5. FOCUS WAVEFORM (IN CASE OF CD)

4

1

2

3

1

2

3

4

TE

PI

FOD

FE

IC501

FOCUS WAVEFORM (IN CASE OF DVD5)

1

2

3

4

FOCUS WAVEFORM (IN CASE OF DVD-RW)

2

1

3

4

TE

PI

FOD

TE

PI

FOD

TE

IC501

3-22

Only for training and service purposes

LGE Internal Use Only

6. WHEN DISC READING , SPINDLE KICK SIGNAL

(SPNN &SPNP BE USED SPINDLE BREAK DIRECTION)

4

12

3

1

2

3

4

SPNN

WHEN WE PUSH OPEN OR STOP KEY ,SPIDLE BREAK SIGNAL

(SPNN &SPNP BE USED SPINDLE BREAK DIRECTION)

1

2

3

4

SPD

TE

SPNN

SPD

TE

IC501

3-23

LGE Internal Use Only

7. DVD & CD DISTINCTION

(DISC SURFACE & DATA LAYER DISTANCE IS DIFFERENT)

IN CASE OF CD 30MS

8. DVD & CD DISTINCTION

(DISC SURFACE & DATA LAYER DISTANCE IS DIFFERENT)

IN CASE OF DVD 14MS

13

2

1

2

3

Mirror

PI

FOD

SPNN

IC501

3-24

Only for training and service purposes

LGE Internal Use Only

9. AT FIRST ACTION, FOCUS SIGNAL A,B,C,D

4

3

2

1

2

3

4

A

B

C

D

10. RF WAVEFORM (ANALOG SCOPE)

F+

IC501

3-25

LGE Internal Use Only

1page MD

9PIN

18PIN

WIRING DIAGRAM

3-26

Only for training and service purposes

LGE Internal Use Only

BLOCK DIAGRAM

SPK FL+

SPK FL-

TAS53X2

12.288MHZ

1page MD

SPK FR+

SPK FR-

FL+/FL-

FR+/FR-

`

PWM

9830B

5)

)

PICK_UP

SLED-/+(6 LOAD-/+,SPIN-/+

MOTOR

BUFFER

N

IP9010

DRV. IC

MOTOR

DRV. IC

COMP.

FLASH

SDRAM

FLASH

SDRAM

EEPROM

Composite

Y, Pb, Pr (4)

VIDEO

BCK,LRCK, ADTA0,ADATA3

Composite

Y, Pb, Pr (4)

MC4580

HP_L/R

PWM_CLK,DAT,RST,AMP_PD

AMP_SD/PROTECT

CD_DVDCT,VC,DVDMDI,CDLDO,DVDLDO(

RF,PUDET,F,E,A,D,C,B,LOAD_SW1/SW2(10)

Y Pr Pb

VIDEO

DRIVER

27MHZ

L R C

8

BH786

AUX

SERVO

)

SPNN,SPNP(2

DRV_MUTE,SVREF(8) CLOSE,FOO,TRO, SLO,SPINO,OPEN,

SCART JACK PCB

R,G,B,V

PART

DVD RST(1)

PART

VIDEO

MPEG

DVD_DI_DO_CLK (3)

SCART

ESS8390

IPOD_RX, TX

RT

AUDIO PA

MCLK,BCK,LRCK,

ADTAT

IPOD

TUNER

R,

AUX_L/R,

TUNER_L/R

SCART_L/

ADC

CS5345

,

PORT_L/R,

IPOD_VIDEO

BT_L/R,

IPOD_L/R

TUNER_DI,DO,CE,,MUTE,RDS_CLK,DAT / HDRADIO_RX, TX

ADC_CLK, DAT,

FRONT PCB

VFD

RCU

PT6324

TOUCH PCB

IC

DRVER

POT HDP

USB

MIC

G

FAN

HP_L/R

MIC_SI

PORT_L/R

USB_N,P

ET

-COM

sanyo

100PIN

CLK

100PIN

DAT

P_CTL (1)

RST IC

+12V

-12V +5V

3.3V +36V

P_SENS(1)

9.8304MHZ

MIC_VOL,,MIC_D STBY_LED,KEY,H/P_SENS, RCU,TOUCH_CLK,TOUCH_DAT VFD_DO,VFD_STB,VFD_CLK

FAN_CTL

SMPS

EEPROM

+5.6VA

VKK

FL-

FL+

3-27 3-28

CIRCUIT DIAGRAMS

1. SMPS(POWER) CIRCUIT DIAGRAM

LGE Internal Use Only

IMPORTANT SAFETY NOTICE

WHEN SERVICING THIS CHASSIS, UNDER NO CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE MODIFIED OR ALTERED WITHOUT PERMISSION FROM THE LG CORPORATION. ALL COMPONENTS SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIRCUIT. SPECIAL

COMPONENTS ARE SHADED ON THE SCHEMATIC FOR EASY IDENTIFICATION.

THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFFER FROM THE ACTUAL CIRCUIT USED. THIS WAY, IMPLEMENTATION OF THE LATEST SAFETY AND PERFORMANCE IMPROVEMENT CHANGES INTO THE SET IS NOT DELAYED UNTIL THE NEW SERVICE LITERATURE 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.

12

11

10

9

8

7

6

5

4

3

2

NOTES) Symbol denotes DC chassis ground.

1

NOTE) Warning

NOTE) Parts that are shaded are critical NOTE) With respect to risk of fire or NOTE) electricial shock.

2008.02.19

A

B C D E F G H I J K L M N O P Q RST

3-29 3-30

2. MICOM CIRCUIT DIAGRAM

Only for training and service purposes

LGE Internal Use Only

12

11

10

9

8

7

6

5

4

3

2

1

A

2008.02.19

B C D E F G H I J K L M N O P Q R ST

3-31 3-32

3. MPEG CIRCUIT DIAGRAM

LGE Internal Use Only

12

11

10

9

8

7

6

5

4

3

2

1

A

B C D E F G H I J K L M N O P Q R ST

2008.02.19

3-33 3-34

4. SERVO CIRCUIT DIAGRAM

2008.02.19

A

1

2

3

4

5

6

7

8

9

10

11

12

B C D E F G H I J K L M N O P Q R ST

Only for training and service purposes

LGE Internal Use Only

3-35 3-36

5. I/O CIRCUIT DIAGRAM

LGE Internal Use Only

12

11

10

9

8

7

6

5

4

3

2

1

A

B C D E F G H I J K L M N O P Q R ST

2008.02.19

3-37 3-38

6. AMP CIRCUIT DIAGRAM

Only for training and service purposes

LGE Internal Use Only

12

11

10

9

8

7

6

5

4

3

2

1

A

2008.02.19

B C D E F G H I J K L M N O P Q R ST

3-39 3-40

7. SCART CIRCUIT DIAGRAM

LGE Internal Use Only

12

11

10

9

8

7

6

5

4

3

2

1

A

B C D E F G H I J K L M N O P Q RST

2008.02.19

3-41 3-42

8. FRONT CIRCUIT DIAGRAM

Only for training and service purposes

LGE Internal Use Only

12

11

10

9

8

7

6

5

4

3

2

1

A

2008.02.19

B C D E F G H I J K L M N O P Q RST

3-43 3-44

9. TOUCH KEY CIRCUIT DIAGRAM

LGE Internal Use Only

2008.02.19

A

1

2

3

4

5

6

7

8

9

10

11

12

B C D E F G H I J K L M N O P Q RST

3-45 3-46

Only for training and service purposes

LGE Internal Use Only

10. MIC CIRCUIT DIAGRAM

12

11

10

9

8

7

6

5

4

3

2

1

A

2008.02.19

B C D E F G H I J K L M N O P Q RST

3-47

LGE Internal Use Only

• PS9830B

1) PIN CONFIGURATION

/

INTERNAL BLOCK DIAGRAM OF IC

2) BLOCK DIAGRAM

/CS/I2C_AD2

DMIX_SDOUT

DMIX_MCL

TEST_MODE1

TEST_MODE2

TEST_MODE3

OVERLOAD

EPD_ENA

SO/SDA

SCK/SCL

DVDD

DVSS

SI/I2C_AD0

SPI/I2C

IO_VSS

XOUT

DMIX_LRCK

DMIX_BCK

DVDD

DVSS

IO_VDD

IO_VSS

/RESET

SCAN_ENA

7

8

XIN

8

9

K

9

1

IO_VSS

PWM8_P

PWM8_M

IO_VDD

727374

75

6

7

8

9

0

1

2

3

4

5

6

7

8

9

0

1

2

3

4

5

6

7

8

9

0

1234567

IO_VSS

IO_VDD

PLL_DVSS

PLL_DVDD

PWM4_P

PWM6_P

PWM6_M

IO_VSS

PWM7_P

PWM7_M

71

69

70

IO_VSS

IO_VDD

DVSS

DVDD

666768

PWM5_P

62

63

64

65

PWM4_M

IO_VSS

PWM5_M

61

58

59

60

PULSUS

PS9830B

9101112131415

8

MBCK

MLRCK

IO_VSS

IO_VDD

IO_VSS

PLL_AVSS

PLL_AVDD

DVDD

DVSS

MSDIN0

16

171819

MSDIN1

MSDIN2

MSDIN3

IO_VSS

57

SBCK

IO_VDD

20

SLRCK

PWM2_P

PWM3_P

PWM3_M

IO_VSS

53

545556

52

2122232425

SSDIN0

SSDIN1

IO_VSS

IO_VDD

PWM2_M

51

SSDIN2

50

49

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

IO_VSS

PWM1_P

PWM1_M

IO_VDD

PWM_HP_L_P

PWM_HP_L_M

IO_VSS

DVSS

DVDD

PWM_HP_R_P

PWM_HP_R_M

IO_VDD

IO_VSS

PWM_SWL_P

PWM_SWL_M

DVSS

DVDD

MIC_SDIN

MIC_LRCK

MIC_BCK

MIC_MCLK

IO_VDD

IO_VSS

EXT_MUTE

SSDIN3

MBCK

MLRCK

MSDIN[0:3]

SBCK

SLRCK

SSDIN[0:3]

MIC_MC

LK

MIC_BCK

MIC_LRCK

MIC_SDIN

SPI/I2C

SO/SDA

SCK/SCL

SI/I2C_AD0

CS/I2C_AD2

EXT_MUTE

Input

&

Output

MUX

Sample

Rate

Converte

Input

Mapper

Mic.

Input

Processo

Host

Interface

2

(I

C, SPI)

r

Internal Controls

Down Mixe

Mixe

Crystal

Oscillator

XIN

r

OXUT

EQ

Internal Clock

Reset & Po

PLL

Serial Audio

Output

interfac

Internal Reset

wer Down

e

Bass

Manager

/RESET

Automatic

Gain

Limiter

Main

Volum

Power Supply

PLL_DVSS

PLL_DVDD

Serial Audio

Output

inter

face

Trim

e

Volume

Output Mapper

PWM

Modulator

POP

NR

SS

DVSS

DVDD

IO_V

IO_VDD

PLL_AVSS

PLL_AVDD

DMIX_MCLK OLRCK OBCK

DOUT

DMIX_S

PWM1_P/M

PWM2_P/M

PWM3_P/M

PWM4_P/M

PWM5_P/M

PWM6_P

/M

PWM7_P/M

PWM8_P/M

PWM_HP_L_P/M

PWM_HP_R_P/M

PWM_

SWL_P/M

EPD_ENA

OVERLOAD

3-48

Only for training and service purposes

LGE Internal Use Only

SLRCK 20 I/O PCM word clock (left-right clock) input/output of sub 8-channel

audio. User can select the master/slave mode of this signal.

Schmitt-Trigger i

nput.

SSDIN [3:0] 23, 24, 25, 26 I/O PCM serial data input of sub-channel audio.

User can set this sub-channel data input pins to PCM serial data output pins. See the Control Register Description part.

Schmitt-Trigger i

nput

3) PIN DESCRIPTIONS

Name Pin NO. Type Description

PLL_AVDD 6 Analog

PLL_AVSS 8 Analog

PLL_DVDD 3 PLL

PLL_DVSS 2 PLL

DVDD 13, 34, 42,

DVSS 14, 35, 43,

IO_VDD 4,

10, 22, 29, 39, 47,

56, 65, 72, 94

IO_VSS 1, 5, 7, 9, 21,

28, 38, 44, 50,

53, 57, 60, 64,

69, 73, 85, 95

/RESET 96 I H/W reset signal. Active Low Schmitt-Trigger input.

XIN 86 Analog Cryst

XOUT 87 Analog Cryst

MBCK 11 I/O PCM bit clock input/output of main 8-channel audio.

MLRCK 12 I/O PCM Word clock (left-right clock) input/output of main 8-channel

MSDIN [3:0] 15, 16, 17, 18 I PCM serial data input of main 8-channel audio.

SBCK 19 I/O PCM bit clock input/output of 8-channel audio.

66, 80, 91

63, 81, 92

Power and Ground

Power

Ground

Power

Ground

Power Core power supply

Ground Core digit

Power I/O power supply. 3.3V Digital power supply.

Ground I/O digital ground.

PCM Audio Input/Output Interface

PLL analog power supply.

analog ground.

PLL

PLL digital power supply.

PLL digit

Reset and Clock

The Schmitt-Trigger input allows a slowly rising input to reset the chip reliably. The RESET signal must be asserted ‘Low’ during power up. De-assert ‘High’ for normal operation.

User can select the master/slave mode of this signal.

Schmitt-Trigger i

audio. User can select the master/slave mode of this signal. Schmitt-Trigger i

Schmitt-Trigger i

User can select the master/slave mode of this signal.

Schmitt-Trigger i

al ground.

al Oscillator input pin.

al Oscillator output pin.

.

nput.

3-49

LGE Internal Use Only

MIC_MCLK 30 O Main clock for external microphone input A/DC.

Clock frequency can be selected between 6.144MHz,

12.288MHz, and 24.576MHz.

MIC_BCK 31 I/O PCM bit clock input/output of external microphone.

Bit clock frequency

is 3.072MHz (48kHz x 64, fixed)

MIC_LRCK 32 I/O PCM Word clock (left-right clock) input/output of external

microphone. Word clock rate is 48

kHz (fixed).

MIC_SDIN 33 I PCM serial data input of external microphone.

Schmitt-Trigger i

nput.

DMIX_MCLK 93 O Main clock for external down-mix line output D/AC.

DMIX_BCK 89 O PCM bit clock output of down-mix signal.

Bit clock frequency

is 6.144MHz (96kHz x 64, fixed)

DMIX_LRCK 88 O PCM Word clock (left-right clock) output of down-mix signal.

Word clock rate is 96kHz (fixed).

DMIX_SDOUT 90 O PCM serial dat

a output of down-mix signal.

PWM Audio Output

PWM1_P 49 O Positive PWM output of channel 1.

PWM1_M 48 O

Negative PWM output of channel 1.

PWM2_P 52 O Positive PWM output of channel 2.

PWM2_M 51 O

Negative PWM output of channel 2.

PWM3_P 55 O Positive PWM output of channel 3.

PWM3_M 54 O

Negative PWM output of channel 3.

PWM4_P 59 O Positive PWM output of channel 4.

PWM4_M 58 O

Negative PWM output of channel 4.

PWM5_P 62 O Positive PWM output of channel 5.

PWM5_M 61 O

Negative PWM output of channel 5.

PWM6_P 68 O Positive PWM output of channel 6.

PWM6_M 67 O

Negative PWM output of channel 6.

PWM7_P 71 O Positive PWM output of channel 7.

PWM7_M 70 O

Negative PWM output of channel 7.

PWM8_P 75 O Positive PWM output of channel 8.

PWM8_M 74 O

Negative PWM output of channel 8.

PWM_HP_L_P 46 O Positive PWM output of headphone lef

t channel.

PWM_HP_L_M 45 O Negative PWM output of headphone lef

t channel.

PWM_HP_R_P 41 O Positive PWM output of headphone right channel.

PWM_HP_R_M 40 O Negative PWM output of headphone right channel.

PWM_SWL_P 37 O

Positive PWM output of subwoofer line output.

PWM_SWL_M 36 O

Negative PWM output of subwoofer line output.

3-50

Only for training and service purposes

LGE Internal Use Only

4) SPECIFICATIONS

Parameter Min Max Units

Power Supply Voltage (IO_VDD) - 0.5 4.0 V

Power Supply Voltage* (DVDD, PLL_AVDD, PLL_DVDD)

V

Output Current (/Pin) - 25

mA

Input Voltage V

SS

– 0.5 5.5 V

Storage Temperature -65 +150

°

C

Stresses greater than those listed over Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability

.

The *power supply voltage (DVDD, PLL_AVDD, PLL_DVDD) is supplied by internal regulator.

RECOMMENDED OPERATING CONDITIONS

Parameter Min Typ Max Units

Power Supply Voltage (IO_VDD) 2.97 3.3 3.63 V

Supply Current (IO_VDD = 3.3V) - 160 -

mA

Input Voltage - 0.3 - 5.5 V

Ambient Operating Temperature -20 25 75

°

C

ELECTRICAL CHARACTERISTICS

Parameter Min Typ Max Units

Input Leakage Current (except Pull-up, Pull-down Input)

- - 10

µ

A

High-Level Input Voltage (except Schmitt Input) 2.0 - 5.5 V

Low-Level Input Voltage (except Schmitt Input) -0.3 - 0.8

V

VT+(Schmitt trigger positive threshold voltage) 1.44 1.5 1.56

V

VT-(Schmitt trigger negative threshold voltage) 0.89 0.94 0.99

V

High-Level Output Voltage (I

O

= 24mA) 2.4 - - V

Low-Level Output Voltage (I

O

= 24mA) - - 0.4 V

Pull-up Resistance 39 65 116

k

Ω

Pull-down Resistance 40 56 108

k

Ω

Input Capacitance (f = 1MHz, VDD = 0V) - - 10 pF

Output Capacitance (f = 1MHz, V

DD

= 0V) - - 10 pF

Low Level output current @Vol=0.4V 2mA 4mA

2.4

4.7

4.0

8.0

5.0

10.0

mA

High Level output current @Voh=2.4V 2mA 4mA

2.8

5.6

5.9

11.9

9.5 19

mA

3-51

LGE Internal Use Only

• LC87F5NC8AVU

1) PIN CONFIGURATION

3-52

Only for training and service purposes

LGE Internal Use Only

2) BIOCK DIAGRAM

3-53

LGE Internal Use Only

3) PIN DESCRIPTIONS

3-54

Only for training and service purposes

LGE Internal Use Only

SR[23]

SR[20]

SR[27]

AUX2[3]

UDAC/YUV0

COMP/YUV3

IDAC/YUV1

YDAC/YUV5

VD33DAC

FDAC/YUV7

VD33

AUX3[0]/CAMIN0

AUX3[2]/CAMIN2

VDD

AUX3[5]/CAMIN5

AUX3[7]/CAMIN7

AUX15/656CLK

VS33

AUX10/TSD[3]

CDAC/YUV2

VS33DAC

VDAC/YUV6

RSET/YUV4

VS33

AUX3[1]/CAMIN1

AUX3[3]/CAMIN3 AUX3[4]/CAMIN4

AUX3[6]/CAMIN6

AUX2[3]

AUX12/RBCK/TDMCL AUX11/RSD/TDMDR

AUX8/VSYNC/RXD2

VREF

SR[21]

SR[26]

SR[22]

CLK/TDMCLK/RBCK RESET# MCLK

AUX9/HSYNC/TXD2 VD33

SPI_C

LK

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204

ES8391

1 2 3 4 5 6 7 8 9101112131415161718192021222324252627282930313233343536373839404142434445464748495051

52

205 206 207 208 209 210 211 212 213 214 215 216

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

11

0

53

54

55

56

57

58

59

60

61

62

63

64

65

66

F

DRFP

SLV

MIN

H

G

DRFN

VGA

DMO

FOO

DRAS2#

SR[16]

SR[15]

SLO

SR[17]

VD33

DMA2

TRO

AUX2[6]

VS33

DMA1

CDPD

SR[13]

DMA4

DMA6

DMA0

VPA

REFD

SR[14]

DMA5

DMA7

DMA10

A

D E

DRAS1#

VBO

SPNN /MNTRN

SPNP /MNTRP /IMS R

AGC1

DVDLD

CDLD

SR[37]

SR[36]

SR[35]

VID_X I

INV_ OUT

REX

AGC2

DVDPD

PI

V165O

OPEN

OPENSW

AUX2[ 4]

SR[30]

SR[31]

SR[34]

TEFEMBDBMP

VGB

VPB

SR[32]

VID_X O

VDD

TBCK/PWM_01R/DAC_O1R

TSD3/PWM_O3R/DAC_O3R

TSD2/PWM_O3L/DAC_O3L

USB_P0

AV D3 3

USB_N0

ADC_ BIAS

SR[33]

DB1

DB2

SR[03]

DB0

SR[04]

SR[00]

SR[01]

AUX4

VD33

DB13

DB12

DB11

DB14

SR[02]

VD33

DB5

DQM

DCAS#/SEL_PLL3

VD33

DOE#/SEL_PLL0

DWE#/SEL_PLL1

DSCK

DB6

VS33

DB7

DB9

DB10

VDD

VS33

DB8

AUX7

AUX6

AUX5

SR[05]

SR[06]

VS33

VDD

AUX3

AUX2

AUX1

SPI_CS3

VD33

SPI_CS2

AUX0

AUX2[1]

SR[07]

VS33

DCS1#

DCS0#

DB4

DB3

DB15

AUX2[0]

CLOSE

CLOSESW

AMPSTBY

LDCO

VD33

VS33

VD33

TSD1/PWM_O2R/DAC_O2R

TSD0/PWM_O2L/DAC_O2L

TWS/PWM_O1L/DAC_O1L

AVS33

MIC_R

MIC_L

VS33PLL VD33PLL

SR[24] SR[25]

VS33 VD33

AUX14/TBCK/TXD1 AUX13/RWS/TDMFS

SPDIF_OUT

SPI_DO SPI_DI

B C

AV D3 3 AVS 33

DVCC

VD33 VS33

VDD

SIN

SOUT

AUX2[5]

SR[10] SR[11] SR[12]

DMA3

DMA11

DMA9

DMA8

SPDIF_IN

3-55

LGE Internal Use Only

• ES8391

1) PIN CONFIGURATION

3-56

Only for training and service purposes

LGE Internal Use Only

ES8391 Pin Description

Table 1 lists the pin descriptions for the ES8391.

Table 1 ES8391 Pin Description

Names Pin Numbers I/O Definitions

VD33

1, 14, 30, 46, 62, 77, 95, 119, 133,

186, 203

P I/O power supply.

VS33

2, 15, 29, 47, 61, 78, 94, 120, 132,

187, 204

G Ground.

DCS1# 3 O DRAM chip select 1 (active-low).

DCS0# 4 O DRAM chip select 0 (active-low).

DRAS0# 5 I/O DRAM row address strobes (active-low).

SEL_PLL2 I Strap pin: System and DSCK output clock frequency selection is made at the

rising edge of RESET#. The matrix below lists the available PLL bit settings. Strapped to VD33PLL or VS33PLL via 4.7-kΩ resistor; read-only during reset.

SEL_PLL3 6 I Clock source select: Strapped to VD33PLL or VS33PLL via 4.7-k! resistor; read

only during reset.

DCAS# O DRAM column address strobe (active-low).

SEL_PLL0

7

I Strap pin. Refer to the description and matrix for SEL_PLL2, pin 5.

DOE# O DRAM output enable (active-low).

DWE#

8

O DRAM write enable (active-low).

SEL_PLL1 Strap pin. Refer to the description and matrix for SEL_PLL2, pin 5.

DSCK 9 O Output clock to DRAM.

DQM 1 0 O Data input/output mask.

DB[15:0]

31, 28-22, 11-13,

17-21

I/O DRAM data bus.

VDD 16, 48, 79, 124, 188 P Core power supply.

AUX2[6-0]

200, 191, 138, 93,

70, 41, 32

I/O Aux2 data I/O

6-0.

SEL_PLL2 SEL_PLL1 SEL_PLL0 Clock Type (MHz)

000 Bypass

0 0 1 121.5MHz

0 1 0 128.25MHz

0 1 1 135MHz

1 0 0 141.75MHz

1 0 1 155.25MHz

1 1 0 162MHz

1 1 1 148.5M

Hz

SEL_PLL3 Clock Source

1 Crystal oscillator

0 CLK input

I

2) PIN DESCRIPTIONS

3-57

LGE Internal Use Only

SR[00:07] 33-40 I/O Application specific pins. Refer to Table 2 for details.

AUX7-0 42-45, 49-52 I/O Auxiliary ports 7-0.

SPI_CS2 53 O SPI boot select.

SPI_CS3 54 O SPI bank-swap select.

SPI_CLK 55 O SPI clock.

SPI_DI 56 I SPI data input.

SPI_DO 57 SPI data output.

SPDIF_IN 58 IO S/PDIF input.

SPDIF_OUT 59 O S/PDIF output.

VSYNC#

60

I/O Vertical sync (active-low).

RXD2 I Serial port 2 receive.

AUX8 I/O Auxiliary port 8.

HSYNC

63

I/O Horizontal sync.

TXD2 O Serial port 2 transmit.

AUX9 I/O Auxiliary port 9.

TSD[3]

64

O Audio transmit serial data (for down-mix).

AUX10 I/O Auxiliary port 10.

RSD

65

I Audio receive serial data.

TDMDR I TDM serial data.

AUX11 I/O Auxiliary port 11.

RBCK

66

I/O Audio receive bit clock.

TDMCLK I TDM bit clock.

AUX12 I/O Auxiliary port 12.

RWS

67

I Audio receive frame sync.

TDMFS I TDM frame sync.

AUX13 I/O Auxiliary port 13.

TBCK

68

I/O Audio transmit bit clock.

TXD1 O Serial port 1 transmit.

AUX14 I/O Auxiliary port 14.

656CLK

69

O BT656 clock.

AUX15 I/O Auxiliary port 15.

AUX3[7]

71

I/O Aux3 data I/O 7.

CAMIN7 I Camera input 7.

AUX3[6]

72

I/O Aux3 data I/O 6.

CAMIN6 I Camera input 6.

AUX3[5]

73

I/O Aux3 data I/O 5.

CAMIN5 I Camera input 5.

Names Pin Numbers I/O Definit

ions

3-58

Only for training and service purposes

LGE Internal Use Only

AUX3[4]

74

I/O Aux3 data I/O 4.

CAMIN4 I Camera input 4.

AUX3[3]

75

I/O Aux3 data I/O 3.

CAMIN3 I Camera input 3.

CAMIN2 76 I Camera input 2.

AUX3[2] I/O Aux3 data I/O 2.

CAMIN1

80

I Camera input 1.

AUX3[1] I/O Aux3 data I/O 1.

CAMIN0

81

I Camera input 0.

AUX3[0] I/O Aux3 data I/O 0.

MCLK 82 I/O Audio master clock for audio DAC.

RESET# 83 I Reset (active-low).

RBCK

84

I/O Audio receive bit clock.

TDMCLK I TDM bit clock.

CLK I System clock.

SR[20:27] 85-92 I/O Application specific pins. Refer to Table 2 for details.

VREF 96 I Internal voltage reference to video DAC.

COMP

97

I Compensation input.

YUV3 O YUV pixel 3 output data.

RSET

98

I DAC current adjustment resistor input.

YUV4 O YUV pixel 4 output data.

Names Pin Numbers I/O Definit

ions

3-59

LGE Internal Use Only

• IP9010

1) PIN CONFIGURATION

NO SY M B OL I/O DESCRIPTI ON

1 DO1- O CH1 driver output(-)

2DO1+ OCH1driveroutput(+)

3 DO2- O CH2 driver output(-)

4DO2+OCH2driveroutput(+)

5VCC1 -Powersupplyvoltage 1

6 I N2 I CH2 i nput

7 I N1 I CH1 i nput

8MUTE IMute

9 CTL3 I Loading motor speed control

10 REV3 I L oading motor r everse i nput

11 FWD3 I L oadi ng mot or for ward i nput

12 SVCC - Signal supply voltage

13 DO3+ O CH3 dri ver output(+)

14 DO3- O CH3 dri ver output

(-)

NO SY M B OL I/O DESCRIPTI ON

15 DO4- O CH4 dri ver output(-)

16 DO4+ O CH4 dri ver output(+)

17 DO5- O CH5 dri ver output(-)

18 DO5+ O CH5 dri ver output(+)

19 VCC2 - Power supply v ol tage 2

20 IN5 I CH5 input

21 IN4 I CH4 input

22 GND - Ground

23 BI A S I Bi as

24 V DET I Reset detecti on

25 RESET O Reset out put

26 FB I A djustable regulator f eed back

27

REGV CC O Regul ator supply vol tage

28

REO - A dj ust abl e r egul ator out put

2) PIN DESCRIPTIONS

3-60

Only for training and service purposes

LGE Internal Use Only

3) BIOCK DIAGRAM

3-61

LGE Internal Use Only

2nd-Order L-C

Output Filter

for Each

Half-Bridge

Bootstrap

Capacitors

2-Channel

H-Bridge

BTL

Mode

System

Microcontroller

OUT_A

OUT_B

OUT_C

OUT_D

BST_A

BST_B

BST_C

BST_D

RESET_AB RESET_CD

System

Power

Supply

Hardwire

Mode

Control

PVDD

GVDD (12 V)/VDD (12 V)

GND

Hardwire

OC

Limit

M1

M3

PVDD Power

Supply

Decoupling

35.5 V

12 V

GND

VAC

PWM_A

PWM_C

PWM_D

PWM_B

V

ALID

M2

Left-

Channel

Output

Right-

Channel

Output

Input H-Bridge

1

Input H-Bridge

2

GVDD

VDD

VREG

Power Supply

Decoupling

4 44

Bootstrap

Capacitors

2nd-Order L-C

Output Filter

for Each

Half-Bridge

Output

H-Bridge

2

Output

H-Bridge 1

OTW

SD

TAS5518

PVDD_A,

B, C, D

GND_A,

B, C, D

GVDD_A,

B, C, D

GND

VDD

VREG

AGND

OC_ADJ

• TAS5342

1) TYPICAL SYSTEM BLOCK DIAGRAM

3-62

Only for training and service purposes

LGE Internal Use Only

2) FUNCTIONAL BLOCK DIAGRAM

4

Under-

OTW

SD

M1

M2

Internal Pullup

Resistors to VREG

Protection

and

voltage

Protection

Power

On

Reset

4

VREG VREG

I/O Logic

M3

Temp. Sense

RESET_AB

Timing

Overload

Protection

Gate

Drive

Gate

Drive

Gate

Drive

Gate

Drive

RESET_CD

PWM_D OUT_D

PWM_C OUT_C

PWM_B OUT_B

PWM_A OUT_A

PWM

Rcv.

PWM

Rcv.

PWM

Rcv.

PWM

Rcv.

Ctrl.

I

sense

BTL/PBTLConfiguration

Pulldown Resistor

VDD

AGND

GND

OC_ADJ

GVDD_D

BST_D

PVDD_D

GND_D

GVDD_C

BST_C

PVDD_C

GND_C

GVDD_B

BST_B

PVDD_B

GND_B

GVDD_A

BST_A

PVDD_A

GND_A

B0034-03

3-63 3-64

LGE Internal Use Only

CIRCUIT VOLTAGE CHART

IC MAIN

IC 100 (audio Micom)LC87F5NC8A

1 1.31 2 0.35

3 0.21 4 3.81 5 0.86 6 1.09 7 4.44 8 5.02

9 2.34 10 2.54 11 0.01 12 2.45 13 2.55 14 5.07 15 5.02 16 4.98 17 4.99 18 4.9 19 0.01 20 0.9 21 0.83 22 4.98 23 0.02 24 0.23 25 3.37 26 5.03 27 5.03 28 5.03 29 4.64 30 0.01 31 0.01 32 0.01 33 0.01 34 5.03 35 0.01 36 5.03 37 0.01 38 5.04 39 0.01 40 5.04 41 0.32 42 0.39 43 0.01 44 0.01 45 0.01 46 4.95 47 0.23 48 0.27 49 0.26

50 0.28 51 0.3 52 0.28 53 0.39 54 5.02 55 5.04 56 0.01 57 0.81 58 0.02 59 0.01 60 0.01 61 0.21

PIN NO.

62 0.29 63 0.57 64 0.64 65 2.03 66 2.08 67 2.09 68 2.14 69 0.01 70 5.52 71 5.01 72 3.23 73 3.9 74 2.04 75 2.12 76 2.11 77 5.04 78 5.04 79 5.01 80 5.01 81 5.04 82 5.04 83 4.22 84 0.01 85 0.02 86 2.82 87 0.07 88 0.01 89 5.04 90 0.12 91 0.12 92 0.1 93 0.03 94 2.27 95 2.08 96 4.74 97 4.82 98 0.01 99 0.01

100 0.01

IC 702 Pulsus (PS9830)

1 0.001 2 0.001 3 1.93 4 3.46 5 0.001 6 1.95 7 0.001 8 0.001

9 0.001 10 3.44 11 1.79 12 1.8 13 1.9 14 0.001 15 0.03 16 1.69 17 1.68 18 1.76 19 1.68 20 1.71 21 0.001 22 3.44 23 0.02

EE Mode (V)

PIN NO.

EE Mode (V)

PIN NO.

EE Mode (V)

PIN NO.

VOLT

PIN NO.

EE Mode (V)

PIN NO.

EE Mode (V)

24 0.02 25 0.02 26 0.02 27 0.001 28 0.001 29 3.44 30 1.67 31 1.71 32 1.71 33 0.01 34 1.9 35 0.001 36 1.71 37 1.71 38 0.001 39 3.44 40 1.71 41 1.71 42 1.9 43 0.001 44 0.001 45 1.71 46 1.71 47 3.44 48 1.71 49 1.71 50 0.001 51 1.71 52 1.71 53 0.001 54 1.71 55 1.71 56 3.44 57 0.001 58 1.71 59 1.71 60 0.001 61 1.71 62 1.71 63 0.002 64 0.001 65 3.44 66 1.9 67 1.71 68 1.71 69 0.001 70 1.71 71 1.71 72 3.44 73 0.001 74 1.71 75 1.71 76 3.37 77 3.44 78 4.98 79 4.98 80 1.9 81 0.002 82 0.002 83 0.002 84 0.002 85 0.002 86 1.71

87 1.76 88 1.69 89 1.68 90 1.68 91 1.9 92 0.002 93 1.66 94 3.44 95 0.002 96 5.01 97 0.002 98 0.002 99 0.002

100 0.002

IC703 (MC4580)

1 0.06 2 0.04 3 0.04 4 -12.23 5 0.04 6 0.06 7 0.06 8 11.58

IC704 (MSGEQ7N)

1 5.14 2 0.01 3 0.4 4 0.04 5 2.2 6 2.58 7 0.08 8 2.54

IC103 (S24CS1)

1 0.01 2 0.01 3 0.01 4 0.01 5 5.04 6 5.04 7 0.01 8 5.04

IC102 (KIA70)

1 5.04 2 0.01 3 5.03

IC101 (KIA70)

1 5.23 2 0.01 3 4.08

IC MAIN_AMP

IC 700 Pulsus (PS9830)

1 0.001 2 0.001 3 3.44 4 3.46 5 0.001 6 1.95 7 0.001 8 0.001

9 0.001 10 3.44 11 1.79 12 1.8

76 3.37 77 3.44 78 4.98 79 4.98 80 1.9 81 0.001 82 0.001 83 0.001 84 0.001 85 0.001 86 1.71 87 1.71 88 1.69 89 1.89 90 1.68 91 1.9 92 0.002 93 1.66 94 3.44 95 0.001 96 5.01 97 0.001 98 0.001 99 0.001

100 0.001

IC 501 Mpeg (ES8390)

1 3.37 2 0 3 0.22 4 3.26 5 3.2 6 3.3 7 3.46 8 0

9 1.45 10 0.02 11 0.92 12 0.94 13 0.86 14 3.35 15 0 16 1.5 17 0.71 18 0.91 19 0.71 20 0.71 21 0.6 22 0.83 23 0.89 24 0.77 25 0.76 26 0.68 27 0.87 28 0.95 29 0 30 3.35 31 1.11 32 3.35 33 1.17 34 0.42 35 0.29 36 3.35 37 0.02

38 1.5 39 0.04 40 1.19 41 3.4 42 3.4 43 3.19 44 3.19 45 3.29 46 0.96 47 0.65 48 3.4 49 0.09 50 4.08 51 0.01 52 3.35 53 4.87 54 3.37 55 1.69 56 1.65 57 1.7 58 1.65 59 3.38 60 3.38 61 0.01 62 3.38 63 3.38 64 1.36 65 3.38 66 3.38 67 0.01 68 1.5 69 3.37 70 3.38 71 1.65 72 4.29 73 1.8 74 0.01 75 3.35 76 0.02 77 2.36 78 1.31 79 3.38 80 0.94 81 3.35 82 0 83 0.93 84 0.9 85 0.76 86 3.36 87 3.4 88 0.01 89 3.4 90 0.02 91 0.02 92 0.59 93 1.08 94 1.09 95 0 96 1.69 97 0.02 98 0.02 99 3.37

100 0.01

PIN NO.

EE Mode (V)

13 1.9 14 0.001 15 0.03 16 1.69 17 1.68 18 1.76 19 1.68 20 1.71 21 0.001 22 3.44 23 0.029 24 0.029 25 0.029 26 0.001 27 0.001 28 0.001 29 3.44 30 1.67 31 1.71 32 1.71 33 0.001 34 1.9 35 0.001 36 1.71 37 1.71 38 0.001 39 3.44 40 1.71 41 1.71 42 1.9 43 0.001 44 0.001 45 1.71 46 1.71 47 3.44 48 1.71 49 1.71 50 0.001 51 1.71 52 1.71 53 0.001 54 1.71 55 1.71 56 3.44 57 0.001 58 1.71 59 1.71 60 0.001 61 1.71 62 1.71 63 0.001 64 0.001 65 3.44 66 1.9 67 1.71 68 1.71 69 0.001 70 1.71 71 1.71 72 3.44 73 0.001 74 1.71 75 1.71

3-65 3-66

Only for training and service purposes

LGE Internal Use Only

PIN NO.

EE Mode (V)

101 0.02 102 0.02 103 1.68 104 1.5 105 1.81 106 1.75 107 0.01 108 3.35 109 0.01 110 0.02 111 3.37 112 0.01 113 3.38 114 0.01 115 3.36 116 0.01 117 0.63 118 0.56 119 1.97 120 1.65 121 1.95 122 1.7 123 0.08 124 1.29 125 3.4 126 3.41 127 2.14 128 1.54 129 0.59 130 3.29 131 0.09 132 0.5 133 3.37 134 0.02 135 1.7 136 1.7 137 1.88 138 1.88 139 1.88 140 1.88 141 1.84 142 1.84 143 2.13 144 2.14 145 1.65 146 0.02 147 1.71 148 1.71 149 1.71 150 1.73 151 1.35 152 3.37 153 0 154 0 155 1.53 156 3.35 157 0 158 1.5 159 1.23 160 1.23 161 1.38 162 1.53 163 3.47

PIN NO.

EE Mode (V)

164 0 165 1.79 166 1.38 167 2.62 168 0 169 0.02 170 1.6 171 0.56 172 0.55 173 0.09 174 0.09 175 0.03 176 0.09

IC 501 Mpeg (ES8390)

PIN NO.

EE Mode (V)

Playback Mode (V)

1 VD33 3.45 3.36

2 VS33 0 0

14 VD33 3.38 3.36

15 VS33 0 0

29VS33 0 0 30 VD33 3.37 3.36 36 VD33 3.37 3.36

37 VS33 0.02 0

38 VDD 1.53 1.51

51 VS33 0.01 0 52 VD33 3.38 3.36 66 VD33 3.38 3.36

67 VS33 0.01 0

68 VDD 1.53 1.51

72 RESET 4.29 4.31

74 VS33 0.01 0 75 VD33 3.37 3.36

81 VD33DAC 3.4 3.4 82 VS33DAC 0 0 87 VD33PLL 3.4 3.25

88 VS33PLL 0.01 0

89 AVD33 3.4 3.4 95 AVS33 0 0

99 VD33 3.37 3.36

100 VS33 0.01 0

104 VDD 1.53 1.51

107 VS33 0.01 0

108 VD33 3.37 3.36

115 VPB 3.37 3.35 116 VGD 0.01 0

122 V1650 1.95 1.7

127 VBD0 2.14 2.15

133 VPA 3.37 3.35 134 VGA 0.02 0

153 AVD33 0 0 154 AVS33 0 0

155 DVCC 1.53 1.51

156 VD33 3.38 3.36

157 VS33 0 0

158 VDD 1.54 1.51

163 VD33 3.38 3.36

164 VS33 0 0

PIN NO.

EE Mode (V)

IC508

1 3.22 2 3.22

PIN NO.

EE Mode (V)

3 0.15 4 0.15 5 0.15 6 3.26 7 0 8 3.48

9 2.58 10 2.49 11 3.48 12 2.48 13 2.46 14 3.48

IC502

1 3.39

2 0.6

3 3.39

4 0.71

5 0.71

6 0

7 0.91

8 0.71

9 3.38 10 0.86 11 0.94 12 0 13 0.92 14 3.38 15 0.02 16 0 17 3.3 18 3.2 19 3.26 20 0.09 21 0.03 22 0.09 23 0.09 24 0.55 25 0.56 26 1.6 27 3.38 28 0.01 29 1.38 30 1.53 31 1.79 32 1.38 33 2.62 34 0 35 0.02 36 0.02 37 3.38 38 1.45 39 0.02 40 0 41 0.01 42 0.83 43 3.38 44 0.89 45 0.77 46 0.01 47 0.76 48 0.68 49 3.39 50 0.87

PIN NO.

EE Mode (V)

51 0.95 52 0.01 53 1.11 54 0.01

IC503

1 3.16 2 1.65 3 3.4 4 0.01 5 0.63 6 2.51 7 3.4 8 3.41

IC504

1 0.01 2 0.01 3 0.01 4 0.01 5 0.19 6 3.47 7 0 8 3.48

IC401 (IP9010)

PIN NO.

EE Mode (V)

Playback M

1 0.12 2.12 2 0.11 2.16 3 0.1 2.05 4 0.09 2.18 5 4.97 4.9 6 1.7 1.72 7 1.71 1.71

GND 0 0

8 0.02 3.29

9 1.09 1.08 10 0 0 11 0 0 12 4.97 4.89 13 0.09 0.21 14 0.09 0.21 15 0.04 3.39 16 0.36 0.826 17 0.11 2.08 18 0.11 2.18 19 4.97 4.9 20 1.7 1.72 21 1.7 1.41

GND 0 0

22 0 0 23 1.7 1.7 24 0.08 0.16 25 0 0 26 1.28 1.23 27 2.21 2.21 28 1.56 1.56

IC201

PIN NO.

EE Mode (V)

1 4.99 2 4.99 3 3.42 4 3.41 5 4.95

PIN NO.

EE Mode (V)

PIN NO.

EE Mode (V)

PIN NO.

EE Mode (V)

6 5.03 7 2.47 8 2.49

9 2.47 10 2.49 11 0.49 12 0.22 13 0.01 14 4.96 15 2.25 16 2.48 17 2.48 18 0 19 4.98 20 0 21 2.47 22 2.48 23 2.47 24 2.48 25 4.06 26 2.47 27 2.48 28 1.52 29 1.52 30 4.96 31 0 32 0 33 0 34 0 35 0 36 3.42 37 0.01 38 0.01 39 0.01 40 0.01 41 1.62 42 1.65 43 1.71 44 1.65 45 0.01 46 3.42 47 4.96 48 0.04

IC 304 (PT6324)

1 4.65

2 3.8

3 3.7

4 1.4

5 0.059

6 0.06

7 2.82

8 0.14

9 4.99 10 -19.65 11 -25.24 12 -27.09 13 -27.11 14 -25.32 15 -27.09 16 -27.09 17 -27.09 18 -21.75 19 -25.3

20 -25.27 21 -27.05 22 -19.24 23 -19.37 24 -25.31 25 -23.55 26 -18.38 27 -20.04 28 -27.2 29 -23.48 30 -25.43 31 -18.34 32 -27.27 33 -27.27 34 -25.71 35 -25.69 36 -25.69 37 -25.7 38 -25.7 39 -25.7 40 -25.7 41 -25.7 42 -25.7 43 -25.71 44 -25.74 45 -25.73 46 -25.71 47 -25.7 48 -25.74 49 -27.44 50 -27.52 51 4.98 52 0.014

IC 3A1 (touch pad)

1 0.1 2 0.312 3 0.311 4 0.312 5 0.314 6 0.311 7 0.073 8 4.67

9 4.59 10 0.305 11 0.337 12 0.307 13 0.308 14 0.31 15 0.033 16 0.034 17 0.028 18 0.04 19 0.04 20 0.041 21 0.04 22 0.041 23 0.041 24 0.04 25 0.04 26 0.039 27 0.039 28 5.03 29 0.312

30 0.312 31 0.312 32 0.014

IC 303 (BA3308)

1 1.74 2 0.008 3 1.74 4 0.008 5 0.01 6 10.9 7 1.75 8 0.008 9 1.75

3-67 3-68

LGE Internal Use Only

PRINTED CIRCUIT BOARD DIAGRAMS

1. MAIN P.C. BOARD DIAGRAM ( TOP VIEW )

3-69 3-70

Only for training and service purposes

LGE Internal Use Only

MAIN P.C. BOARD DIAGRAM ( BOTTOM VIEW )

3-71 3-72

LGE Internal Use Only

2. SMPS P.C. BOARD DIAGRAM

NOTE: Warning

Parts that are shaded are critical With respect to risk of fire or electrical shock.

3-73 3-74

Only for training and service purposes

LGE Internal Use Only

3. SCART P.C. BOARD DIAGRAM ( TOP VIEW )

SCART P.C. BOARD DIAGRAM ( BOTTOM VIEW )

4. TOUCH KEY P.C. BOARD DIAGRAM ( TOP VIEW )

TOUCH KEY P.C. BOARD DIAGRAM ( BOTTOM VIEW )

3-75 3-76

LGE Internal Use Only

5. FRONT P.C. BOARD DIAGRAM

6. MIC P.C. BOARD DIAGRAM

3-78 3-79

Only for training and service purposes

LGE Internal Use Only

LG MBD-K203Q Schematic

Specifications and Main Features

Frequently Asked Questions

User Manual