LG DP372 Service Manual

PORTABLE DVD

SERVICE MANUAL

MODEL: DP372/DP372B-N

CAUTION

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

MODEL: DP372/DP372B-N

SERVICE MANUAL

P/NO : AFN56903618 MARCH , 2008

Website http://biz.lgservice.com

Internal Use Only

CONTENTS

SECTION 1.........SUMMARY

SECTION 2.........EXPLODED VIEWS

SECTION 3.........ELECTRICAL

SECTION 4.........REPLACEMENT PARTS LIST

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

1-1

LGE Internal Use Only

SECTION 1

SUMMARY

CONTENTS

PRODUCT SAFETY SERVICING GUIDELINES FOR PORTABLE DVD PRODUCTS.........1-3

SERVICING PRECAUTIONS....................................................................................................................1-4

• GENERAL SERVICING PRECAUTIONS

• INSULATION CHECKING PRODEDURE

• ELECTROSTATICALLY SENSITIVE (ES) DEVICES

SPECIFICATIONS ........................................................................................................................................1-5

LGE Internal Use Only

1-2

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

PRODUCT SAFETY SERVICING GUIDELINES FOR PORTABLE DVD PRODUCTS

IMPORTANT SAFETY NOTICE

This manual was prepared for use only by properly trained audio-video service tech­nicians.
When servicing this product, under no circumstances should the original design be
modified or altered without permission from LG Corporation. All components should
be replaced only with types identical to those in the original circuit and their physical
location, wiring and lead dress must conform to original layout upon completion of
repairs.

Special components are also used to prevent x-radiation, shock and fire hazard.
These components are indicated by the letter “x” included in their component desig­nators and are required to maintain safe performance. No deviations are allowed
without prior approval by LG Corporation.
Circuit diagrams may occasionally differ from the actual circuit used. This way, imple­mentation of the latest safety and performance improvement changes into the set are
not delayed until the new service literature is printed.

CAUTION

tomized installations without manufacturer’s approval. Unauthorized modifications will
not only void the warranty, but may lead to property damage or user injury.

Service work should be performed only after you are thoroughly familiar with these
safety checks and servicing guidelines.

: Do not attempt to modify this product in any way. Never perform cus-

GRAPHIC SYMBOLS

The exclamation point within an equilateral triangle is intended to alert
the service personnel to important safety information in the service lit­erature.
The lightning flash with arrowhead symbol within an equilateral trian­gle is intended to alert the service personnel to the presence of non­insulated “dangerous voltage” that may be of sufficient magnitude to
constitute a risk of electric shock.
The pictorial representation of a fuse and its rating within an equilater­al triangle is intended to convey to the service personnel the following
fuse replacement caution notice:
CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF
FIRE, REPLACE ALL FUSES WITH THE SAME TYPE AND RAT­ING AS MARKED NEAR EACH FUSE.

SERVICE INFORMATION

While servicing, use an isolation transformer for protection from AC line shock. After
the original service problem has been corrected, make a check of the following:

FIRE AND SHOCK HAZARD

1. Be sure that all components are positioned to avoid a possibility of adjacent com­ponent shorts. This is especially important on items trans-ported to and from the
repair shop.

2. Verify that all protective devices such as insulators, barriers, covers, shields, strain
reliefs, power supply cords, and other hardware have been reinstalled per the orig­inal design. Be sure that the safety purpose of the polarized line plug has not been
defeated.

3. Soldering must be inspected to discover possible cold solder joints, solder splash­es, or sharp solder points. Be certain to remove all loose foreign particles.

4. Check for physical evidence of damage or deterioration to parts and components,
for frayed leads or damaged insulation (including the AC cord), and replace if nec­essary.

5. No lead or component should touch a high current device or a resistor rated at 1
watt or more. Lead tension around protruding metal surfaces must be avoided.

6. After reassembly of the set, always perform an AC leakage test on all exposed
metallic parts of the cabinet (the channel selector knobs, antenna terminals, han­dle and screws) to be sure that set is safe to operate without danger of electrical
shock. DO NOT USE A LINE ISOLATION TRANSFORMER DURING THIS
TEST. Use an AC voltmeter having 5000 ohms per volt or more sensitivity in the
following manner: Connect a 1500 ohm, 10 watt resistor, paralleled by a .15 mfd
150V AC type capacitor between a known good earth ground water pipe, conduit,
etc.) and the exposed metallic parts, one at a time. Measure the AC voltage across
the combination of 1500 ohm resistor and .15 mfd capacitor. Reverse the AC plug
by using a non-polarized adaptor and repeat AC voltage measurements for each
exposed metallic part. Voltage measured must not exceed 0.75 volts RMS. This
corresponds to 0.5 milliamp AC. Any value exceeding this limit constitutes a poten­tial shock hazard and must be corrected immediately.

TIPS ON PROPER INSTALLATION

1. Never install any receiver in a closed-in recess, cubbyhole, or closely fitting shelf
space over, or close to, a heat duct, or in the path of heated air flow.

2. Avoid conditions of high humidity such as: outdoor patio installations where dew
is a factor, near steam radiators where steam leakage is a factor, etc.

3. Avoid placement where draperies may obstruct venting. The customer should also
avoid the use of decorative scarves or other coverings that might obstruct ventila­tion.

4. Wall- and shelf-mounted installations using a commercial mounting kit must follow
the factory-approved mounting instructions. A product mounted to a shelf or plat­form must retain its original feet (or the equivalent thickness in spacers) to provide
adequate air flow across the bottom. Bolts or screws used for fasteners must not
touch any parts or wiring. Perform leakage tests on customized installations.

5. Caution customers against mounting a product on a sloping shelf or in a tilted posi­tion, unless the receiver is properly secured.

6. A product on a roll-about cart should be stable in its mounting to the cart.
Caution the customer on the hazards of trying to roll a cart with small casters
across thresholds or deep pile carpets.

7. Caution customers against using extension cords. Explain that a forest of exten­sions, sprouting from a single outlet, can lead to disastrous consequences to
home and family.

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

1-3

LGE Internal Use Only

SERVICING PRECAUTIONS

CAUTION: Before servicing the PORTABLE DVD covered by
this service data and its supplements and addends, read and
follow the SAFETY PRECAUTIONS. NOTE: if unforeseen cir­cumstances create conflict between the following servicing
precautions and any of the safety precautions in this publica­tion, always follow the safety precautions.
Remember Safety First :

General Servicing Precautions

1. Always unplug the PORTABLE DVD AC power cord from
the AC power source before:
(1) Removing or reinstalling any component, circuit board,

module, or any other assembly.

(2) Disconnecting or reconnecting any internal electrical

plug or other electrical connection.

(3) Connecting a test substitute in parallel with an electrolyt-

ic capacitor.
Caution: A wrong part substitution or incorrect polarity
installation of electrolytic capacitors may result in an
explosion hazard.

2. Do not spray chemicals on or near this PORTABLE DVD or
any of its assemblies.

3. Unless specified otherwise in this service data, clean elec­trical contacts by applying an appropriate contact cleaning
solution to the contacts with a pipe cleaner, cotton-tipped
swab, or comparable soft applicator.
Unless specified otherwise in this service data, lubrication of
contacts is not required.

4. Do not defeat any plug/socket B+ voltage interlocks with
which instruments covered by this service manual might be
equipped.

5. Do not apply AC power to this PORTABLE DVD and / or any
of its electrical assemblies unless all solid state device heat
sinks are correctly installed.

6. Always connect the test instrument ground lead to an appro­priate ground before connecting the test instrument positive
lead. Always remove the test instrument ground lead last.

Electrostatically Sensitive (ES) Devices

Some semiconductor (solid state) devices can be damaged
easily by static electricity. Such components commonly are
called Electrostatically Sensitive (ES) Devices. Examples of
typical ES 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 ES
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
ES 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 ES devices.

5. Do not use freon-propelled chemicals. These can generate
an electrical charge sufficient to damage ES devices.

6. Do not remove a replacement ES device from its protective
package until immediately before you are ready to install it.
(Most replacement ES devices are packaged with leads
electrically shorted together by conductive foam, aluminum
foil, or comparable conductive material).

7. Immediately before removing the protective material from
the leads of a replacement ES device, touch the protective
material to the chassis or circuit assembly into which the
device will be installed.

Insulation Checking Procedure

Disconnect the attachment plug from the AC outlet and turn
the power on. Connect an insulation resistance meter (500V)
to the blades of the attachment plug. The insulation resistance
between each blade of the attachment plug and accessible
conductive parts (Note 1) should be more than 1Mohm.
Note 1: Accessible Conductive Parts include Metal panels,
Input terminals, Earphone jacks,etc.

LGE Internal Use Only

Caution: Be sure no power is applied to the chassis or cir­cuit, and observe all other safety precautions.

8. Minimize bodily motions when handling unpackaged
replacement ES devices. (Normally 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 ES device.)

1-4

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

SPECIFICATIONS

• DVD PLAYER

Power requirements DC 12V

Power consumption 12W

External dimensions 207 x 39 x 168mm (W x H x D)

Net weight (Approx.) 0.85kg

Operating temperature 5°C to 40°C

Operating humidity 5% to 90%

Laser semiconductor laser

Signal system NTSC

• CONNECTORS

Audio/Video Output ø3.5mm mini jack x 1

- Video: 1.0V(p-p), 75Ω, sync negative

- Audio: 1.5Vrms (1kHz, 0dB)

Earphone terminal ø3.5mm stereo mini jack x 2

• LIQUID CRYSTAL DISPLAY

Panel size 7inches wide (diagonal)

Projection system R.G.B. stripe

Driving system TFT active matrix

Resolution 480 x 234 (WQVGA)

• SUPPLIED ACCESSORIES

RCA Video/Audio cable

AC Adapter (MPA-630)

Automotive Adapter (DPDC1)

Remote Control

Battery for Remote Control (Lithium Battery)

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

1-5

LGE Internal Use Only

MEMO

LGE Internal Use Only

1-6

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

SECTION 2

EXPLODED VIEWS

CONTENTS

EXPLODED VIEWS .....................................................................................................................................2-2

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

2. PACKING ACCESSORY SECTION...........................................................................................................2-3

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

2-1

LGE Internal Use Only

EXPLODED VIEWS

1. CABINET AND MAIN FRAME SECTION

G

A00

295

CABLE3

263

CABLE2

296

K

D

809

262

262

M

279

F

E

L

CABLE10

K

I

78
2

89
2

9

CABLE

H

G

F

E

J

CABLE8

M

L

MAIN

BOARD

A46

A44

269

261

CABLE1

84
2

285

287

288

C

83
2

C

82
2

266

260

266

D

A45

RD
81
2

KEY

BOA

A53

A48

LGE Internal Use Only

293

264

265

A43

A51

A

I

A

H

B

A40

J

288

LCD

BOARD

B

2-2

85
2

53
2

277

A41

BOARD

INVERTER

286

277

A52

52
2

251

251A

72
2

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

2. PACKING ACCESSORY SECTION

834

CABLE, CIGAR JACK

806

PLUG ASS'Y(RCA CABLE)

808

BATTERY

833

ADAPTER

900

REMOTE CONTROL

835

801

OWNER'S MANUAL

804

PACKING SHEET

CAR-MOUNT

803

BAG

802B

802

MASTER BOX

BOX

802A

BOX

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

2-3

LGE Internal Use Only

MEMO

LGE Internal Use Only

2-4

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

SECTION 3

ELECTRICAL

CONTENTS

ELECTRICAL TROUBLESHOOTING GUIDE ...................................................................................3-2

1. POWER CHECK FLOW.........................................................................................................................3-2

2. SYSTEM OPERATION FLOW ...............................................................................................................3-3

3. SYSTEM TEST FLOW ..........................................................................................................................3-4

DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING .................................3-10

1. SYSTEM 27MHZ CLOCK, RESET, FLASH SCK SIGNAL. .................................................................3-10

2. SDRAM CLOCK ...................................................................................................................................3-12

3. TRAY OPEN/CLOSE SIGNAL..............................................................................................................3-12

4. SLED CONTROL RELATED SIGNAL ..................................................................................................3-13

5. LASER POWER CONTROL RELATED SIGNAL .................................................................................3-14

6. SPINDLE CONTROL WAVEFORM......................................................................................................3-14

7. FOCUS ON WAVEFORM.....................................................................................................................3-15

8. TRACKING CONTROL RELATED SIGNAL(System checking) ...........................................................3-16

9. 1389DE/LP VIDEO OUTPUT WAVEFORM .........................................................................................3-17

10. AUDIO OUTPUT FROM 1389DE/LP .................................................................................................3-17

WIRING CONNECTION DIAGRAMS..................................................................................................3-18

1. WIRING CONNECTION DIAGRAM-1..................................................................................................3-18

2. WIRING CONNECTION DIAGRAM-2..................................................................................................3-19

BLOCK DIAGRAMS.................................................................................................................................3-20

1. OVERALL BLOCK DIAGRAM..............................................................................................................3-20

2. POWER BLOCK DIAGRAM.................................................................................................................3-21

3. SERVO BLOCK DIAGRAM..................................................................................................................3-22

4. SYSTEM BLOCK DIAGRAM................................................................................................................3-23

5. AV BLOCK DIAGRAM ..........................................................................................................................3-24

6. LCD BLOCK DIAGRAM .......................................................................................................................3-25

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

1. MPEG CIRCUIT DIAGRAM .................................................................................................................3-27

2. MEMORY CIRCUIT DIAGRAM............................................................................................................3-29

3. OPU & MOTOR CIRCUIT DIAGRAM ..................................................................................................3-31

4. AV CIRCUIT DIAGRAM........................................................................................................................3-33

5. CHARGE CIRCUIT DIAGRAM.............................................................................................................3-35

6. LCD IF CIRCUIT DIAGRAM.................................................................................................................3-37

7. AUDIO CIRCUIT DIAGRAM.................................................................................................................3-39

8. KEY CIRCUIT DIAGRAM.....................................................................................................................3-41

9. LCD KEY CIRCUIT DIAGRAM.............................................................................................................3-43

CIRCUIT VOLTAGE CHART ..........................................................................................................3-45

PRINTED CIRCUIT BOARD DIAGRAMS .........................................................................................3-49

1. MAIN P.C.BOARD ................................................................................................................................3-49

2. LCD P.C.BOARD ..................................................................................................................................3-53

3. INVERTER P.C.BOARD .......................................................................................................................3-53

4. KEY P.C.BOARD ..................................................................................................................................3-53

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-1

LGE Internal Use Only

ELECTRICAL TROUBLESHOOTING GUIDE

1. POWER CHECK FLOW

A. B.

No 3.3VA

Is

5VA section

working?

YES

Is

VCC_5V section

working?

Check Q402/Q415

and Replace

NO

YES

Check Q408/D401

and Replace

YESNO

Replace U401

No 5VA

BAT_OUT=12V?

YES

Check Q410/D402

and Replace

YES

NO

Check D606

Replace

LGE Internal Use Only

3-2

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

2. SYSTEM OPERATION FLOW

1.

8032 initializes SERVO,DSP & RISC registers

2. Write RISC code to SDRAM

3. Reset RISC

Show LOGO

Power on

YES

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

Tray closed?

NO

SLED at

inner side?

NO

Receive

OPEN/CLOSE Key?

YES

YES

1. Execute pressed Key & IR key

2. System operation routine loop

1. Stop playback & open Tray

2. Display tray open message & LOGO

NO

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

NO

Receive

CLOSE Key?

3-3

YES

LGE Internal Use Only

3. SYSTEM TEST FLOW

TEST

Check the

AC voltage power PCBA

(110V or 220V)

YES

Switch on the power PCBA

Is the DC voltage

outputs OK? (5V, 3.3V, 12V,

5.6V MOTOR)

YES

Make sure the main PCBA don't

short on VCCs and switch it on.

YES

Is 3.3V and 1.8V DC

outputs normal on main

PCBA?

YES

NO

NO

NO

Replace power PCBA or AC transformer.

Repair or Replace power PCBA

Check the regulators or related diodes.

Connect to PC RS232 cable and

update the FLASH memory code.

LGE Internal Use Only

Update FLASH

successfully?

YES

A

NO

1. Check 27MHz system clock.

2. Check system reset circuit.

3. Check FLASH R/W enable signal PRD,
RWR.

4. Check RS232 SIGNALS.

5. Check FLASH Memory related circuit.

3-4

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

A

RESET or power on.

Show LOGO?

YES

NO NO

Flash

memory operates

properly?

YES

SDRAM

NO

works properly?

YES

138PDE/LP

VIDEO outputs

NO

properly?

YES

Have TV

NO

signal output?

YES

Check AV cable

connection to TV set.

Check connection lines between

FLASH & MTK1389DE/LP and

the FLASH access time whether

is suitable or not.

Check connection lines

between SDRAM &

MTK1389DE/LP and the

SDRAM is damaged.

Check the related circuit

of1389DE/LP.

Check the filtering and

amp circuit of TV signal.

Does tray

move inside when

NO

it is not at closed

position?

YES

B

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

OPEN_SW & CLOSE_SW

Normal

signals?

YES

Normal

OPEN & CLOSE

signal?

YES

Normal

FAN_TRAY+ & FAN_TRAY-

signal?

YES

Check the cable connection

between main PCBA and loader.

3-5

NO

NO

NO

Check the load

OPEN & CLOSE switch

Check the Tray control IO pins

on 1389DE/LP & AM5898N.

Check the Tray control

amplifying circuit on Motor driver.

LGE Internal Use Only

B

Does the

SLED move to inner

side when it is at

outer position?

YES

Do not put in disc and

tray close.

Optical

lens has movements

for searching

focus?

Motor

driver DR_MUTE

pin is high?

YES

Is SLD_PWM

DC level higher

than 1.65V?

YES

FAN_SLD+ &

FAN_SLD- output

properly?

YES

Check the cable

connection with MECHA.

Proper

FOD outputs to motor

driver?

YES

NONO

NO

NO

NONO

Check the connection line of

DR_MUTE signal.

Check the related

circuit of SLD_PWM

Check the amp

circuit on motor driver.

Check FOD connection on

1389DE/LP and motor driver.

C

LGE Internal Use Only

YES

Proper

FCS+ & FCS

outputs?

YES

Check cable connect on

with pick-up head.

3-6

NO

Check the amp circuit

on motor driver.

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

C

Laser

turns on when

reading disc?

YES

Put disc in?

YES

Disc ID

is correct?

NO NO

DVD_LD,

CD_LD output

properly?

YES

voltage of power transistor

Collector

NO

is OK?

YES

Check cable connection

between transistor output

and pick-up head

NO

NO

Laser off

Proper RF

NO

signal on OPU

YES

Check the laser power circuit

on 1389DE/LP and connecting

to power transistor.

Check the related circuit on

laser power transistor

Check the related circuit

on RF signal.

YES

Does

NO

spindle rotate?

YES

D

between spindle and main PCBA.

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

Check

DVD_LD & CD_LD signal

Proper

SPD_PWM signal on

1389DE/LP

YES

FAN_SPN+

& FAN_SPN output

properly?

YES

Check the cable connection

3-7

NO

NO

Check SPD_PWM related

circuit on 1389DE/LP.

Check the spindle control

amp circuit of motor driver

LGE Internal Use Only

D

Focus

on OK?

YES

Track

on OK?

NO NO

Proper

signals on A,B,C,D of

1389DE/LP

YES

Check

FOD signal on

NO

1389DE/LP

YES

FCS+ & FCS-

output properly?

YES

Check cable connection

on pick-up head.

NO NO

Properly

TRD signal on

1389DE/LP?

YES

Check connections between

1389DE/LP and pick-up head.

Check the FOD connection on

1389DE/LP and motor driver.

Check the focus control

amp circuit on motor driver

Check the TRD

connection on 1389DE/LP

and motor driver

YES

Disc is play?

YES

E

NO

TRK+ & TRK-

output properly?

YES

Check cable connection

on pick-up head.

Check RF signal waveform.

NO

Check the tracking control

amp circuit on motor driver

LGE Internal Use Only

3-8

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

E

Normal

audio output when

disc playback?

YES

Normal

IR.VFD & Front panel

key functions?

YES

NO

AMP received correct

Audio

NO

data stream?

YES

Normal

audio AMP

NO

out?

YES

Check audio filter,

amplify, mute circuit.

Commu-

NO NO

nications between

IR.VFD front panel key &

1389DE/LP is

normally?

YES

Check connection between

1389DE/LP & audio AMP.

Check the related

circuit of audio AMP.

Check communication

lines on 1389DE/LP.

TEST END

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

Check the cable

connection on front panel.

3-9

LGE Internal Use Only

XI XO

CRYSTAL CIRCUIT

C204

1000pF/NC
C204

1000pF/NC

R201

100KR201 100K

R268

0R268 0

L209

2.7uH/NC

L209

2.7uH/NC

R269

0

R269

0

Y201
27M

Y201
27M

1 2

3

C212
27pF

C212
27pF

C232
27pF

C232
27pF

DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING

3.3V

V18

+

CE208

100uF/6.3V

+

CE208

100uF/6.3V

12

R230 330R230 330

C236

0.1uF

C236

0.1uF

L207

FB(1206)

L207

FB(1206)

R223

680

R223

680

U202
CM1117SCM233
SOT223

U202
CM1117SCM233
SOT223

OUT

2

IN

3

ADJ

1

TAB

4

+

CE209
100uF/6.3V

+

CE209
100uF/6.3V

12

URST#

DV33

L213
10uH

L213
10uH

+

CE213
22uF/16V

+

CE213
22uF/16V

12

R236
22K

R236
22K

B

C

E

Q202

3904

B

C

E

Q202

3904

1

3 2

R225

3.3K

R225

3.3K

L214
10uH

L214
10uH

D201
1N4148/NC

D201
1N4148/NC

1 2

B

C

E

Q201

3904

B

C

E

Q201

3904

1

3 2

R224

3.3K

R224

3.3K

R235

4.7K

R235

4.7K

R226
15K

R226
15K

1. SYSTEM 27MHz CLOCK, RESET, FLASH SCK SIGNAL.

1-1. 1389DE/LP main clock is at 27MHz(Y201)

1

1

FIG 1-1

1-2. 1389DE/LP reset is active high.

RESET

2

3

1.8V

2

3

FIG 1-2

3-10

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

LGE Internal Use Only

TXD

RXD

DV33

RS-232

J201

CON4_2.0MM_DIP
J201

CON4_2.0MM_DIP

1
2
3
4

1-3. RS232 waveform during procedure(Downloading)

SF_CK

SF_DI

SF_CS

SF_CS
SF_DO

SD33

SD33

SD33

SD33

16Mb/32Mb

S-FLASH

R314

0(600R EM

C)

R314

0(600R EMC)

R313

0R313 0

R312

0R312 0

R307

10KR307 10K

U302

AT26DF161A/AT26DF321

U302

AT26DF161A/AT26DF321

CS#

1

DO

2

WP#

3

VSS

4

DI

5

CLK

6

HOLD#

7

VCC

8

R315 0R315 0

R311

10KR311 10K

C309

0.1uF

C309

0.1uF

R310

NCR310 NC

R306

10KR306 10K

4

5

1-4. FLASH SCK

TXD

5

4

RXD

FIG 1-3

6

FIG 1-4

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-11

6

LGE Internal Use Only

SDCLK

DCAS#

BA1

DRAS#

BA0

CAS#
WE#

DCLK

RAS#

DBA0
DBA1

DWE#

DQM1

DRAS#

SDCKE

DCAS#

DCS#

DWE#

SDCLK

DQM0

EMC

R303

150/200 EM

C

R303

150/200 EMC

R305

33/150(EMC)

R305

33/150(EMC)
RN301
33x4

RN301
33x4

1 8
2 7
3 6
4 5

R304

33/150(EMC)

R304

33/150(EMC)

CLK

38

CKE

37

CS

19

RAS

18

CAS

17

WE

16

DQML

15

DQMH

39

NC1

36

NC2

40

VSS

54

VSS

41

VSS

28

2. SDRAM CLOCK

TRIN

DV33

L211L211

R218
10K

R218
10K

C234

0.1uF

C234

0.1uF

SW201

SW212

SW201

SW212

1 4

2 3

SW202

SW212

SW202

SW212

1 4

2 3

DCLK=128MHz, Vp-p=1.77, Vmax=2.35V

7

FIG 2-1

7

3. TRAY OPEN/CLOSE SIGNAL

8

LGE Internal Use Only

FIG 3-1

OPEN

CLOSE

3-12

8

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

CT1

FMSO

TRSO

STBY

V1P4

SL+

STANDBY

SL-

T+

R410 10KR410 10K

U401

AM5898N

U401

AM5898N

EN2

1

GND

VCC1

VINSL+

COMP2

3

CT2

2

VOSP-

21

PVCC2

7

VOSL+

MGND

PGND1

26

PGND

25

GND

36

COMP1

30

MUTE

33

PVCC1

6

SW2

4

IPK2

5

BIAS

34

VOFC-

9

VINFC

VINTK

23

VCC2

24

VINSP

22

SW1

29

IPK1

28

CT1

31

EN1

32

VOFC+

8

PGND2

27

VOSL­MGND
VOTK+

VOSP+

20

MGND

19

VOTK-

18

R402 20KR402 20KR460

10K/NC

R460
10K/NC

R448 10KR448 10K

C414

0.1uF

C414

0.1uF

C417 68pFC417 68pF

R434 0R434 0

R423 10KR423 10K
R429 15R429 15

4. SLED CONTROL RELATED SIGNAL

SL-

9

10

11

9

SL+

TRSO

FIG 4-1 < DVD >

9

SL-

10

11

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

FIG 4-2 < CD >

SL+

TRSO

3-13

10 11

LGE Internal Use Only

C

A

IOA

VR_CD

LDO1

LDO2

V20

LD_CD

F-

F+

T+

T-

D

B

E

GND

MDI1

MDI1

LD_DVD

F

RFO

VR_DVD

S3.3V

S3.3V

VCC_5V

3

2SB1132

1

C2EB

+

CE417
220uF/6.3v

+

CE417
220uF/6.3v

1 2

C430 0.1uFC430 0.1uF

+

CE416
100uF/10V

+

CE416
100uF/10V

12

L412
47

UH(

L412
47UH(

C436
NC

C436
NC

R424

4.7R424 4.7

R421

4.7R421 4.7

R461
47K/NC

R461
47K/NC

+

CE418
47uF/6.3v

+

CE418
47uF/6.3v

12

Q411

2SB1132

Q411

2SB1132

1

23

L413

10uH

L413

10uH

Q414

2SB1132

Q414

2SB1132

1

2 3

C427

0.1uF

C427

0.1uF

J401

HEADER 24 SMD0.5 TOP
CON24_0.5MM

J401

HEADER 24 SMD0.5 TOP
CON24_0.5MM

10
9
8
7
6
5
4
3
2
1

11

13
12

15
14

16

20
19
18
17

24
23
22
21

25
26

L414

10uH

L414

10uH

5. LASER POWER CONTROL RELATED SIGNAL

T-

SP-

SP+

DMSO

FOSO

F+
F-

U401

AM5898N

U401

AM5898N

EN2

1

GND

35

VCC1

10

VINSL+

12

COMP2

3

CT2

2

VOSP-

21

PVCC2

7

VOSL+

14

MGND

13

PGND1

26

PGND

25

GND

36

COMP1

30

MUTE

33

PVCC1

6

SW2

4

IPK2

5

BIAS

34

VOFC-

9

VINFC

11

VINTK

23

VCC2

24

VINSP

22

SW1

29

IPK1

28

CT1

31

EN1

32

VOFC+

8

PGND2

27

VOSL-

15

MGND

16

VOTK+

17

VOSP+

20

MGND

19

VOTK-

18

C416 68pFC416 68pF

C415
1000pF

C415
1000pF

R413
680K

R413
680K

R433 0R433 0
R432 10KR432 10K

R415 15R415 15

MDI1(0V/180mV)

12

13

CD_LD(3.3V//2.3V)

14

DVD_LD(3.3V/2.3V)

FIG 5-1

6. SPINDLE CONTROL WAVEFORM

12

CN201

13

14

15

16

17

LGE Internal Use Only

FIG 6-1

SP-(4.5V/2.8V)

SP+(1V/2.8V)

DMSO(1.65V/0.3V)

3-14

16

1715

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

T-

SP-

SP+

DMSO

FOSO

STANDB

F+
F-

0.1 1%0.1 1%

U401

AM5898N

U401

AM5898N

EN2

1

GND

35

VCC1

10

VINSL+

12

COMP2

3

CT2

2

PVCC2

7

VOSL+

14

MGND

13

PVCC1

6

SW2

4

IPK2

5

VOFC-

9

VINFC

11

VOFC+

8

VOSL-

15

MGND

16

VOTK+

17

C416 68pFC416 68pF

1.2K 1%1.2K 1%

000pF

000pF

10K10K

R413
680K

R413
680K

R433 0R433 0
R432 10KR432 10K

R415 15R415 15

10K10K

7. FOCUS ON WAVEFORM

18

19

F+

F-

20

FIG 7-1 < DVD >

18

19

20

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

FIG 7-2 < CD >

FOSO

F+

F-

FOSO

3-15

18

19

20

LGE Internal Use Only

T-

CT1

FMSO

TRSO

STBY

V1P4

SP- SL+

SP+

DMSO

FOSO

STANDBY

SL-

F+
F-

T+

BAT_OU

M5V

3333

R410

10KR410 10K

0.1 1%0.1 1%

U401

AM5898N

U401

AM5898N

EN2

1

GND

35

VCC1

10

VINSL+

12

COMP2

3

CT2

2

VOSP-

21

PVCC2

7

VOSL+

14

MGND

13

PGND1

26

PGND

25

GND

36

COMP1

30

MUTE

33

PVCC1

6

SW2

4

IPK2

5

BIAS

34

VOFC-

9

VINFC

11

VINTK

23

VCC2

24

VINSP

22

SW1

29

IPK1

28

CT1

31

EN1

32

VOFC+

8

PGND2

27

VOSL-

15

MGND

16

VOTK+

17

VOSP+

20

MGND

19

VOTK-

18

R430R430

R416R416

R402 20KR402 20K

C416 68pFC416 68pF

R460
10K/NC

R460
10K/NC

1.2K 1%1.2K 1%

R448

10KR448 10K

15

15

R411R411

C414

0.1uF

C414

0.1uF

10K10K

C417 68pFC417 68pF

R433 0R433 0
R432 10KR432 10K

R415 15R415 15

R434 0R434 0

R423

10KR423 10K

10K10K

R420

R420

R429 15R429 15

8. TRACKING CONTROL RELATED SIGNAL(System checking)

T+

21

T-

22

23

21

22

FIG 8-1 < DVD >

TRSO

T+

T-

22 21

23

23

LGE Internal Use Only

FIG 8-2 < CD >

TRSO

3-16

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

A+5V

<-->

C504
56pF-102(EMC)

C504
56pF-102(EMC)

Q509

BAT54S

Q509

BAT54S

3

2

1

R524
10

R524
10

C522
ESD(15pF/56P)

C522
ESD(15pF/56P)

J510

PJ-3513B-3531
J510

PJ-3513B-3531

1122334

4

5

5

6

6

C526
56pF-102(EMC)

C526
56pF-102(EMC)

9. 1389DE/LP VIDEO OUTPUT WAVEFORM

A+5V

<-->

C504
56pF-102(EMC)

C504
56pF-102(EMC)

Q509

BAT54S

Q509

BAT54S

3

2

1

R524
10

R524
10

C522
ESD(15pF/56P)

C522
ESD(15pF/56P)

J510

PJ-3513B-3531
J510

PJ-3513B-3531

1122334

4

5

5

6

6

C526
56pF-102(EMC)

C526
56pF-102(EMC)

24

FIG 9-1

24

10. AUDIO OUTPUT FROM 1389DE/LP

25

FIG 10-1

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-17

25

LGE Internal Use Only

WIRING CONNECTION DIAGRAMS

MAIMAIN PCBCB

LCDLCD PCB

INVERTOR PCB

1. WIRING CONNECTION DIAGRAM-1

(MAIN PCB <---> LCD & INVERTOR PCB)

LGE Internal Use Only

3-18

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

2. WIRING CONNECTION DIAGRAM-2

kekey Py PCB

MAIMAIN PCBCB

(MAIN PCB <---> KEY PCB)

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-19

LGE Internal Use Only

BLOCK DIAGRAMS

1. OVERALL BLOCK DIAGRAM

AV OUT

VOLUME

SPK

H/P

A+5V

3.3V3.3V

3.3V/BAT_OUT

M

USBP,USB

USB JACK

KEY

DVD_KEY1

DVD_KEY2

DVD_KEY3

DVD_KEY4

DVD_KEY5

D

RED,

GREEN

Power,

Charge LE

IR_OUT

5VA

STANDBY

PWM

AD_PR

GT6312

AD_T

AD_U

AD_I

IR

AD_K

REMOCON

KEY

R

RECEIVE

SP_L/R-

A+5V

OPO

PT2303

UTE

SP_M

MPEG

MT1389DE/LP

OP-,OP+

SP_L/R+/-

BS
CV

QN8000

ML/R_OUT

FM+3.3V

AF2301P

3.3V FM+3.3V

FM_MUTE

DQ[0..15]

DCLK,DCKE
WE#,DQM[0..1]

I

CS#,CAS#,RAS#,
MA[0..11], BA[0..1],

SF_DO

SF_D
SF_CK
SF_CS

CKV,PWRCTL_LCD
OEH/V,LNR,UND,
STHL/R, STVL/R,
MOD,89P_R/G/B,
VCOMO,CPH1,

1.8V/3.3V

O

XI,X

64MBit

SDRAM

FLASH

16/32MBit

MEMORY

LCD PANEL

A,

SCL,SD

12V

PEN

TRO

AOUT_L/R

NJM4580M

A_MUTE_SW

LIMIT

LGE Internal Use Only

DISC

27MHz

LDO1,LDO2,IOA,V20

A,B,C,D,E,F,RFO,MDI1/2

UP

PICK

M

MOTOR

SPINDLE

SLED

R

MOTO

V

A+5V

LD_5

M5V

2F2301P

V1P4,FOSO,TRSO,FMSO,DMSO,STBY

5VA

F+,F-,

T+,T-

-

SP+,

SP

SL-

M5V

AM5898N

DC-DC BLOCK1

MOTOR DRIVER

SL+,

M

DECK MECHANISM

3-20

1.8V

CM1117

3.3V

DC-DC BLOCK2

Copyright © 2008 LG Electronics. Inc. All right reserved.

BAT_OUT

P-

APM4953K

BC

P+

DC_IN

R5460/SM9926

B-

BATTERY

Only for training and service purposes

2. POWER BLOCK DIAGRAM

12V

in

BAT

ou

SW

(12

in

Cha

rge

E

na

ble

Cha

rge

The

rmi

st

DC

Sen

se

BAT

Se

ns

5VA

3.3

1.8

A+5

Sta

ndb

A+5

Bat

ter

y

ou

3.3

1.8

7.5

15V

-10

D5V

7.5

15V

-10

D5V

A+5

M5V

RCR

256

GT6

312

5VA

Charge

Discharge

REMOCON

5VA

RECEIVER

Servo

M5V

LCD

V

7.5

D5V

V

-10

Panel

D5V

15V

Video

Audio

t
ou

V

y
ter

A+5

Bat

V

A+5

System

V

3.3

V

7.5

1

256

RCR

V

1.8

V

-10

LCD

15V

Vcc

)

V in

(12

SW

BAT Con

t
ou

BAT

e
ns

Se

BAT

Divide Divide

se

Sen

DC

312

GT6

in

12V

FET

er
st

rge

rmi

Cha

The

ble
na

E

rge

Battery Charge Circuit

Cha

5VA

V

A+5

y

ndb

Sta

S/W

DC-DC

AM5898N

V

3.3

S/W

V

1.8

Reg

AC/DC Adapter

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-21

LGE Internal Use Only

3. SERVO BLOCK DIAGRAM

Spi

dle

Mo

Steppi

ng

Mo

L

27MHz

X-TA

Y201

U201

ONE CHIP

ALPC

P-DVDPLAYER

MTK1389DE/LP

FMSO,DMSO,FOSO,

V1P4

TRSO,STBY,

Driver

U401

AM5898N

Motor

DVD : A,B,C,D,RF

F,RF

CD : A,B,C,D,E,

FO+, FO-,

TR+, TR-

IOA

MDI1,MDI2

CDLD(LD01),DVDLD(LD02)

O

OP

OP+,OP-

LGE Internal Use Only

PICK

UP

SL-,SL+

LIMIT

SP-,SP+

ng

ter
Mo

Steppi

ndle

Spi

ter
Mo

3-22

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

4. SYSTEM BLOCK DIAGRAM

2^14*2^8*16=64Mbit

27MHz

3.3V

16/32MBit

SF_DI

SF_DO

FLASH

MEMORY

SF_CS

SF_CK

3.3V

64MBit

DQ0~DQ15

MA0~MA11,DBA0/1

DCLK,DCKE

MPEG

SDRAM

CS#,CAS#,RAS#

WE#,DQM0,DQM1

DVD_K1,DVD_K2,DVD_K3,

DVD_K4,DVD_K5

IROUT

LCD MODE,DISPLAY,SETUP,MENU

UP,DOWN,LEFT,RIGHT,ENTER

KEY1

GT6312

POWER,PLAY/PAUSE,REW,FF,STOP,

COLOR/BRIGHT

KEY2

AD_KEY

GREEN

RED,

Power,

Charge LED

1.8V/3.3V

USBP,USBM

A+5V

USB JACK

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

MT1389DE/LP

3-23

5VA

IR

RECEIVER

REMOCON

LGE Internal Use Only

5. AV BLOCK DIAGRAM

GT

6312

6312
GT

SP_MUTE

VIDEO

< AV OUT >

AUDIO

SPK

SP_L+/L-

PT2303

A+5V

VOLUME

SPK

SP_R+/R-

H/P JACK

H/P JACK

SP_L-/R-

SP_L-/R-

QN8000

FM+3.3V

ML_OUT,MR_OUT

3.3V

FM+3.3V

AF2301P

V

3.3

LGE Internal Use Only

1.8V/3.3V

5VA

VIDEO ADC

CVBS

A_MUTE_SW

12V

NJM4580M

AOUT_L/R

2CH DAC

OP-AMP

3-24

SDA,SCL,

FM_MUTE

MPEG

MT1389DE/LP

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

6. LCD BLOCK DIAGRAM

•VGH

•VGL

•STVR

•STVL

•CKV

•UND

•OEV

•VCOMO

LCD PANEL

•VGH (15V)

•VGL (-10V)

•LNR

•7.5V

•5V

•MOD

•OEH

•STHL

•RCR2561IC

•STHR

•CPH3

•CPH2

•CPH1

•89P_R

•89P_G

•89P_B

•SP L-

SPEAK

•SP L+

•SP R-

•SP R+

BACKLIGHT

LCD POWER BLOCK

•VCOM

•NJM3414A IC

•VOLTAGE SUPPLY

VCOM BLOCK

SMOTHLY

Connector

(Main interface)

•STVR

•STVL

•ROUT

BLOCK

R/G/B Circuit

•CKV

•UND

•OEV

•VCOMO

•LNR

•GOUT

•BOUT

•MOD

•OEH

•STHL

•STHR

•CPH3

•CPH2

•CPH1

•89P_R

•89P_G

•89P_B

INVERTER

•SP L-

•SP L+

•SP R-

•BAT_OUT

•LCD_CTRL

•MP2359 IC

POWER BLOCK

•SP R+

•3.3V

•BAT_OUT

•PWRCTL_LCD

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-25

LGE Internal Use Only

MEMO

LGE Internal Use Only

3-26

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

CIRCUIT DIAGRAMS

RFV18-2

IOA

TRIN

IR_OUT

XO

STBY

FMO

DVD_KEY1

DVD_KEY3

DVD_KEY2

DVD_KEY4
DVD_KEY5

VCOMO

OEV

LDO1

OP-

RFVDD3

AVCM

MA3

IR_OUT

AVDD33

OP+

LIMIT

V20

MA1

TRO

FOO

V1P4

FMO
DMO

FOSOFOSOFOSOFOSOFOSOFOSO
TRSOTRSOTRSOTRSOTRSOTRSO

DMSODMSODMSODMSODMSODMSO

FMSOFMSOFMSOFMSO

TRIN

MA0

TXD

VCC_5V

RFO

FS

RXD

MA10

SDA1

DVD_KEY4

BA1

BA0

D

A

B

C

RAS#

STVL

AADVDD

CAS#

CKV

OPO

RFV18-1

WE#

AADVDD

MA4

MA11

APLLVDD3

MA5

DCLK

V20

DQM1

MA6
MA7

SF_CS

SF_DI

SF_DO

SF_CK

URST#

SF_C

S

SF_D

O

SF_D

I

DACVDD3

LDO2

TXD

RXD

RFV18-1

RFV18-2

V1P4

C

LDO1

D

LDO2

STBY

E

V1P4

F
RFO

DMSO

TRSO

FOSO
FMSO

IOA

MDI1

OPO

A

LIMIT

V20

OP-

DVD_SLEEP

B

SF_CK

SCL

1

DVD_

KEY5

DQ0

DQ1

DQ2

DQ3

BA1

DACVDD3

BA0

DQ4

DQ5

ADACVDD

DACVDD3

DVD_

KEY1

DQ7

DQ6

DVD_

KEY2

DVD_

KEY3

DQM

0

DQ1

5

DQ12DQ13DQ10DQ1

1

DQ8

APLLVDD3

ADACVDD

MA9

MA8

DACVDD3

VCOMO

DQ9

89L_G

DQ1

4

F

89L_B

DVD_SL

EEP

89L_R

E

AL

AR

FM_MUT

E

STHL

OE

H

V1P4

VCC_5V

DVD_KEY5

DVD_KEY1

DVD_KEY2

DVD_KEY3

DVD_KEY4

OP+

USBP

CPH1

CVBS

SDA

OPO

XI

USBM

CVBS

ASPDIF

SCL

DCLK

DQM[0..1]

URST#

WE#

RAS#

MA[0..11]

CAS#

FM_MUTE

XO

3.3VMA2

GND

MDI1

89L_B

89L_G

89L_R

CPH1

DV33

STHL

OEH

OEV

CKV

STVL

DQ[0..15]

AL
AR

FOO

XI

ASPDIF

DMO

FG

TRO

RFVDD3

AVDD33 SCLSCL1

SDA1

SCL

SDA

USBP
USBM

DV333.3V

3.3V

V18

DV33

V18

DV33

DV33 V18

V18

AVDD33

DV33

RFVDD3

DV33

AVDD33

DV33

AADVDD

V18

RFV18-1

RFV18-2

DV33

ADACVDD

APLLVDD3

DACVDD3

DV33

DV33

RFVDD3

RFV18-2

RFV18-1

V18

3.3V

DV33

IR_OUT 6

VCC_5V

4,5

DVD_KEY1

7

DVD_KEY3

7

DVD_KEY4

7

DVD_KEY2

7

DVD_KEY5

7

VCOMO

7

SF_CS

3

SF_DI

3

SF_CK

3

SF_DO

3

V20

4

V1P4

4

STBY

4

DMSO

4

FOSO

4

TRSO

4

FMSO

4

OPO

4

LIMIT

4

IOA

4

LDO1

4

LDO2

4
A4
B4
C4
D4
E4
F4
RFO

4
MDI1

4

OP-

4

BA1

3

BA0

3

CVBS

5

OP+

4

FM_MUTE

8

GND

3,4,5,6,7

3.3V

3.4,7

89L_B

7

89L_G

7

89L_R

7

CPH1

7

STHL

7

OEH

7

OEV

7

CKV

7

STVL

7

DQ[0..15]

3

SDA

3,8

ASPDIF

5

SCL

3,8

MA[0..11]

3

RAS#

3

WE#

3

CAS#

3

DVD_SLEEP

7

DCLK

3

DQM[0..1]

3

AR

5

AL 5

CRYSTAL CIRCUIT

RS-232

SERVO I/F

DVD_KEY

IC

LCD

AUDIO INTERFACE

MEMORY

POWER
CONTRL

IIC

FLASH

S-FLASH

H:FM
L:FM

EMC

EMC

FM/EMC

EMC

EMC

EMC

EMC

L213
10uH

L213
10uH

R228

0R228 0

L206

FB(50)

L206

FB(50)

C220

10uF/10V

C220

10uF/10V

R234 0R/NCR234 0R/NC

C230 0.1uFC230 0.1uF

L211

CBV160808A471B

L211

CBV160808A471B

+

CE204
10uF/16V

+

CE204
10uF/16V

12

R217 10kR217 10k

L218

FB(600)L218FB(600)

L210

47uH L21047uH

+

CE213
22uF/16V

+

CE213
22uF/16V

12

C229

330pF

C229

330pF

C204

1000pF/NC
C204

1000pF/NC

C217

NCC217 NC

R214

27KR214 27K

C249
102

C249
102

R202

0RR202 0R

+

CE208

100uF/6.3V

+

CE208

100uF/6.3V

12

L217 FB(600)L217 FB(600)

C235

0.1uF

C235

0.1uF

R236
22K

R236
22K

B

C

E

Q202

3904

B

C

E

Q202

3904

1

3 2

C207

0.015uF

C207

0.015uF

R209

0R209 0

R206

0R206 0

C251

0.1uF

C251

0.1uF

R205

10

R205

10

C206

0.1uF

C206

0.1uF

C210

6800pF

C210

6800pF

C205

0.1uF

C205

0.1uF

R259

0R259 0

R207

10R207 10

R230

330R230 330

+

CE203

100uF/6.3v

+

CE203

100uF/6.3v

12

+

CE202

100uF/6.3v

+

CE202

100uF/6.3v

12

L204

FB(50)

L204

FB(50)

L202

FB(50)

L202

FB(50)

R212

0R212 0

C241
180pF

C241
180pF

L201

FB(50)

L201

FB(50)

R233

0R/NC

R233

0R/NC

C244
33pF

C244
33pF

C209
120pF/NC

C209
120pF/NC

R204

560R 1%

R204

560R 1%

C248
102

C248
102

R219
10K

R219
10K

L205

FB(50)

L205

FB(50)

C236

0.1uF

C236

0.1uF

R225

3.3K

R225

3.3K

L214
10uH

L214
10uH

+

CE201
100uF/6.3V

+

CE201
100uF/6.3V

1 2

R201 100KR201 100K

C203

0.1uF

C203

0.1uF

R218
10K

R218
10K

+

CE207

47uF/6.3v

+

CE207

47uF/6.3v

12

L207

FB(1206)

L207

FB(1206)

MT1389LP

U201

MT1389L/SMD
LQFP-128

MT1389LP

U201

MT1389L/SMD
LQFP-128

RFA

1

RFB

2

RFC

3

RFD

4

RFE

5

RFF

6

AVDD18_2

7

AVDD33_1

8

XTALI

9

XTALO

10

AGND33

11

V20

12

V14

13

REXT

14

MDI1

15

MDI2

16

LDO1

17

MDILDO2

18

AVDD33_2

19

DMO

20

FMO

21

TRAY_OPEN

22

TRAY_CLOSE

23

TRO

24

FOO

25

PG/GPIO2

26

USB_DP

27

USB_DM

28

VDD33_USB

29

VSS33_USB

30

PAD_VRT

31

VDD18_USB

32

GPIO3/INT#

33

GPIO434GPIO635SF_CS_36SF_DO37SF_DI38SF_CK39UP1_6/SCL40UP1_7/SDA41ICE42PRST#43IR44RD045RD146RD247RD348RD449DVDD3350RD551RD652RD753DVDD1854DQM055RD1556RD1457RD1358RD1259DVSS3360RD1161RD1062RD963RD8

64

VOE/GPIO15

96

VCK/GPIO14

95

VSTU/GPIO13

94

SPDIF/GPIO12

93

HSTR/11

92

LR/GPIO10

91

DVDD18

90

UD/GPIO9

89

VSTD/GPIO8

88

GPIO7/CKE

87

RA3

86

RA2

85

DVDD33

84

RA1

83

RA0

82

RA10

81

BA1

80

DVSS18

79

BA0

78

RAS#

77

CAS#

76

RWE#

75

RA4

74

RA5

73

RA6

72

RA7

71

RA8

70

RA9

69

DVDD33

68

RA11

67

RCLK

66

DQM1

65

HCK/GPIO18

99

HSTL/GPIO17

98

HOE/GPIO16

97

RFH/OPINN

128

RFG/OPINP

127

RFIN/OPOUT

126

RFIP

125

AGND18

124

AVDD18_1

123

ADACVDD2

122

ADACVDD1

121

AL/GPIO1

120

AVCM

119

AR/GPIO0

118

ADACVSS

117

APLLCAP

116

APLLVDD

115

AADVDD

114

AKIN1/GPIO21/Audio_mute

113

ADVCM/GPIO20

112

AKIN2/GPIO19/Audio_mute

111

AADVSS

110R109B108G107

DACVDDA

106

DACVDDB

105

CVBS

104

DACVSSC

103

FS

102

VREF

101

DACVDDC

100

R223

680

R223

680

C234

0.1uF

C234

0.1uF

D201
1N4148/NC

D201
1N4148/NC

1 2

R203 0RR203 0R

C211 4.7uFC211 4.7uF

+

CE211
220uF/6.3v

+

CE211
220uF/6.3v

12

C218

0.1uF

C218

0.1uF

C243
NC

C243
NC

C247
102

C247
102

B

C

E

Q201

3904

B

C

E

Q201

3904

1

3 2

R241

AVLC18S02003

R241

AVLC18S02003

C245
100pF

C245
100pF

C239

1uF

C239

1uF

R224

3.3K

R224

3.3K

R237

OR

R237

OR

R268

0R268 0

SW201

SW212

SW201

SW212

1 4

2 3

C233
6800pF

C233
6800pF

R240 15P(EMC)R240 15P(EMC)

U202
CM1117SCM233
SOT223

U202
CM1117SCM233
SOT223

OUT

2

IN

3

ADJ

1

TAB

4

R232 0R232 0

C225

0.1uF

C225

0.1uF

C208 0.1uFC208 0. 1uF

C246
100pF

C246
100pF

L209

2.7uH/NC

L209

2.7uH/NC

C227

0.1uF

C227

0.1uF

R221

27KR221 27K

R269

0

R269

0

R213

5.1KR213 5.1K

L215

10uh-20uH

L215

10uh-20uH

+

CE209
100uF/6.3V

+

CE209
100uF/6.3V

12

C252

0.1uF

C252

0.1uF

C201

0.1uF

C201

0.1uF

C240
102

C240
102

C221

0.1uF

C221

0.1uF

C238

0.1uF

C238

0.1uF

C215

0.1uF

C215

0.1uF

C250

18P

C250

18P

C226

0.1uF

C226

0.1uF

C223

0.1uF

C223

0.1uF

C214 220pFC214 220pF

R238
0R

R238
0R

Y201
27M

Y201
27M

1 2

3

R210 0R210 0

R235

4.7K

R235

4.7K

C242
180pF

C242
180pF

R229

10KR229 10K

C219

0.1uF

C219

0.1uF

J201

CON4_2.0MM_DIP
J201

CON4_2.0MM_DIP

1
2
3
4

C216

0.1uF

C216

0.1uF

C228 1uFC228 1uF

C224

0.1uF

C224

0.1uF

C213

0.1uF

C213

0.1uF

+

CE212
220uF/6.3v

+

CE212
220uF/6.3v

12

R242

AVLC18S02003

R242

AVLC18S02003

L20847uH/NC L20847uH/NC

R226
15K

R226
15K

1:GND

2:D+

3:D-

4:VCC

4

2

3

1

JP201

USB2.0-CUT-DIP

1:GND

2:D+

3:D-

4:VCC

4

2

3

1

JP201

USB2.0-CUT-DIP

3

2

1

4

56

7 8

C222 1500pFC222 1500pF

C212
27pF

C212
27pF

C202

330pF

C202

330pF

C237
102

C237
102

C231

0.1uF

C231

0.1uF

L212

FB(

600)

L212

FB(600)

L203 FB(50)L203 FB(50)

R211

15KR211 15K

R216

15KR216 15K

R222

0R222 0

+

CE205

100uF/6.3V

+

CE205

100uF/6.3V

12

R208 0R208 0

+

CE206
10uF/16V

+

CE206
10uF/16V

12

C232
27pF

C232
27pF

R249

2KR249 2K

R239 15P(EMC)R239 15P(EMC)

RN201 10Kx4RN20110Kx4

1 8
2 7
3 6
4 5

L216 50 PBL216 50 PB

SW202

SW212

SW202

SW212

1 4

2 3

02.MPEG

LG & MALATA

Saturday, November 17, 2007

02.MPEG

LG & MALATA

Saturday, November 17, 2007

02.MPEG

LG & MALATA

Saturday, November 17, 2007

1. MPEG CIRCUIT DIAGRAM

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-27 3-28

LGE Internal Use Only

2. MEMORY CIRCUIT DIAGRAM

GND

SF_CK

SF_DI

SF_CS

BA1

DQ[0..15]

DQM[0..1]

MA[0..11]

SCL
SDA

WE#

DCLK
CAS#
RAS#

BA0

3.3V

SF_CK
SF_CS

SF_DO

SF_DI

SDCLK

DCAS#

BA1

DRAS#

BA0

CAS#

SDCKE

WE#

GND

DCLK

RAS#

DBA0

SCL

DCS#

SDA

SCL

DBA1

SDA

DWE#

SF_CS
SF_DO

MA0

DQM1

DRAS#

MA5

MA9

DQ0

SDCKE

MA10

DQ9

DCAS#

DBA1

DQ1

MA8

DCS#

DQ11

DQ15

MA6
MA7

MA4

DQ3

DQ5

DWE#

MA11

MA1

DQ2

DQ7

MA2

DQ10

DQ8

DBA0

SDCLK

DQ4

MA3

DQM0

DQ14

DQ6

DQ13

DQ12

SD33

SD33

SD33

SD33

SD33

SD33

SD33

3.3V SD33

SD33

SD33

SD33

SD33

GND

2,4,5,6,7,8

BA1

2

WE#

2

DCLK

2

CAS#

2

RAS#

2

DQM[0..1]

2

SCL

2

SDA

2

DQ[0..15]

2

MA[0..11]

2

BA0

2

3.3V

2,4,7,8

SF_CK

2

SF_CS

2

SF_DO

2

SF_DI

2

DRAM

IIC

EEPROM

16Mb/32Mb

S-FLASH

S-FLASH

SDRAM

EMC

EMC

R314

0(600R EM

C)

R314

0(600R EMC)

R303

150/200 EM

C

R303

150/200 EMC

R313

0R313 0

C305

0.1uF

C305

0.1uF

R312

0R312 0

R307

10KR307 10K

R305

33/150(EMC)

R305

33/150(EMC)

U302

AT26DF161A/AT26DF321

U302

AT26DF161A/AT26DF321

CS#

1

DO

2

WP#

3

VSS

4

DI

5

CLK

6

HOLD#

7

VCC

8

R309
1K/NC

R309
1K/NC

C306

0.1uF

C306

0.1uF

R315

0R315 0

RN301
33x4

RN301
33x4

1 8
2 7
3 6
4 5

+

CE301

47uF/10V

+

CE301

47uF/10V

12

C307

0.1uF

C307

0.1uF

R311

10KR311 10K

C308

0.1uF

C308

0.1uF

C309

0.1uF

C309

0.1uF

C303

0.1uF

C303

0.1uF

R308
1K/NC

R308
1K/NC

R310

NCR310 NC

C302

0.1uF

C302

0.1uF

R304

33/150(EMC)

R304

33/150(EMC)

C310

0.1uF/NC

C310

0.1uF/NC

L301

FB(50)L301 FB(50)

C311
22P

C311
22P

U301
HY57V641620

U301
HY57V641620

A0

23

A1

24

A2

25

A3

26

A4

29

A5

30

A6

31

A7

32

A8

33

A9

34

A10/AP

22

A11

35

BA0/A13

20

BA1/A12

21

CLK

38

CKE

37

CS

19

RAS

18

CAS

17

WE

16

DQML

15

DQMH

39

NC1

36

NC2

40

VSS

54

VSS

41

VSS

28

DQ0

2

DQ1

4

DQ2

5

DQ3

7

DQ4

8

DQ5

10

DQ6

11

DQ7

13

DQ8

42

DQ9

44

DQ10

45

DQ11

47

DQ12

48

DQ13

50

DQ14

51

DQ15

53

VCC

1

VCC

14

VCC

27

VCCQ

3

VCCQ

9

VCCQ

43

VCCQ

49

VSSQ

6

VSSQ

12

VSSQ

46

VSSQ

52

C304

0.1uF

C304

0.1uF

R306

10KR306 10K

R301

10KR301 10K

R302

10KR302 10K

U303
EEPROM 24C02/NC

U303
EEPROM 24C02/NC

A0

1

A1

2

A2

3

GND

4

SDA

5

SCL

6

WP

7

VCC

8

C301

0.1uF

C301

0.1uF

03.MEMORY

LG & MALATA

Saturday, November 17, 2007

03.MEMORY

LG & MALATA

Saturday, November 17, 2007

03.MEMORY

LG & MALATA

Saturday, November 17, 2007

LGE Internal Use Only

3-29 3-30

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

3. OPU & MOTOR CIRCUIT DIAGRAM

04.OPU & MOTOR

LG & MALATA

Saturday, November 17, 2007

04.OPU & MOTOR

LG & MALATA

Saturday, November 17, 2007

04.OPU & MOTOR

LG & MALATA

Saturday, November 17, 2007

C

T-

3.3V

5VA

CT1

FMSO

TRSO

STBY

V1P4

A

V1P4

IOA

SP-

LIMIT

OP+

SP-

OP-

SL+

SL-

SP-A

SP+

SL+

LDO1

V1P4

V20

IOA

VR_CD

SP+

TRSO

C

LDO2

OPO

LDO1

LDO2

A+5V

D

V20

LIMIT

STBY

DMSO

RFO

VCC_5V

E

FOSO

MDI1

LD_CD

A

DMSO

FOSO

F-

F+

T+

T-

D

A-5V

B

A+5V

E

GND

IOA

FMSO

F

OP-

B

STANDBY

OPO

SP- OP-

SP+
SP-A

OPO

CT1

MDI1

MDI1

VCC_5V

GND

LD_DVD

LCD_3.3V

STANDBY

A-5V

BAT_OUT

SL-

F+
F-

F

OP+

T+ STANDBY

RFO

VR_DVD

LCD_3.3V

S3.3V

S3.3V

5VA

S3.3V

VCC_5V

BAT_OUT

M5V

M5V

3.3V

BAT_OUT

BAT_OUT

M5V

BAT_OUT

BAT_OUT

S3.3V3.3V

BAT_OUT

M5V

M5V

VCC_5V

M5VVCC_5V

A+5V

VCC_5V

7

LCD_3.3V

7

LDO1

2

V1P4

2

TRSO

2

C2

LDO2

2

OPO

2

D2

LIMIT

2

DMSO

2

RFO

2

E2

FOSO

2

MDI1

2

A2

FMSO

2

F2

OP-

2

B2

3.3V

2,3,7,8

A+5V

2,5

BAT_OUT

5,6,7

IOA

2

GND

2,3,5,6,7

STBY

2

STANDBY

6

V20

2

A-5V

5

OP+

2

5VA 6,7

SERVO I/F

OFF-PAGE CONNECTION

5V Power for Video Buffer & Motor Driver & OPU

3

2SB1132

1

C2EB

EMC

EMC

C437 105/NCC437 105/NC

R458

10KR458 10K

R408

33R408 33

R410

10KR410 10K

R427

0.1 1%R427 0.1 1%

R428

NCR428 NC

L406

10uH

L406

10uH

R404

680K/NCR404 680K/NC

R456

10K

R456

10K

R457
0

R457
0

J403

4x1 W/HOUSING

J403

4x1 W/HOUSING

1

2

3

4

R412

1/NC

R412

1/NC

D

S

G

Q402

AF2301P/RCR1521SI

P-CHANNEL

D

S

G

Q402

AF2301P/RCR1521SI

P-CHANNEL

1

3 2

R425
1R

R425
1R

C434

0.1uF

C434

0.1uF

C409

0.1uF

C409

0.1uF

R442
0

R442
0

U401

AM5898N

U401

AM5898N

EN2

1

GND

35

VCC1

10

VINSL+

12

COMP2

3

CT2

2

VOSP-

21

PVCC2

7

VOSL+

14

MGND

13

PGND1

26

PGND

25

GND

36

COMP1

30

MUTE

33

PVCC1

6

SW2

4

IPK2

5

BIAS

34

VOFC-

9

VINFC

11

VINTK

23

VCC2

24

VINSP

22

SW1

29

IPK1

28

CT1

31

EN1

32

VOFC+

8

PGND2

27

VOSL-

15

MGND

16

VOTK+

17

VOSP+

20

MGND

19

VOTK-

18

B

C

E

Q409

2N3904

B

C

E

Q409

2N3904

1

3 2

C401

0.1uF

C401

0.1uF

R441

10kR441 10k

C426

0.1uF

C426

0.1uF

R430

0.11%R430 0.11%

R416

100R416 100

G

S

D

Q418

2SK3018

G

S

D

Q418

2SK3018

1

2 3

L411 FB(50)L411 FB(50)

C408

0.1uF

C408

0.1uF

R443
0/NC

R443
0/NC

R451

680K/NC

R451

680K/NC

D402
1N5819

D402
1N5819

1 2

R418 3.6K 1%R418 3.6K 1%

+

CE401
10uF/16V/NC

+

CE401
10uF/16V/NC

1 2

R402 20KR402 20K

L403

50

L403

50

B

C

E

Q407

3906

B

C

E

Q407

3906

2 3

1

C411

1uF

C411

1uF

R459

100KR459 100K

C416

68pFC416 68pF

+

CE417
220uF/6.3v

+

CE417
220uF/6.3v

1 2

R460
10K/NC

R460
10K/NC

C430

0.1uFC430 0.1uF

+

CE411

100uF/25V

+

CE411

100uF/25V

12

R450 1.2K 1%R450 1.2K 1%

R448

10KR448 10K

+

CE416
100uF/10V

+

CE416
100uF/10V

12

R405

27K

R405

27K

C415
1000pF

C415
1000pF

B

C

E

Q415

2N3904

B

C

E

Q415

2N3904

1

3 2

R455
0

R455
0

R449

150K/NC

R449

150K/NC

C402

2200pF/NC

C402

2200pF/NC

C419

1000pF
C419

1000pF

L412
47

UH(

L412
47UH(

+

CE410

220uF/10V

+

CE410

220uF/10V

12

L408

47uH(LH)

L408

47uH(LH) R411 1.2K 1%R411 1.2K 1%

+

CE402

47uF/10V

+

CE402

47uF/10V

12

C436
NC

C436
NC

C414

0.1uF

C414

0.1uF

D401
1N5819

D401
1N5819

1 2

R406

150K/NC

R406

150K/NC

+

CE403

47uF/10V

+

CE403

47uF/10V

12

R424 4.7R424 4.7

R422

6.8K

R422

6.8K

L404

10uH

L404

10uH

D

S

G

Q410
AO3409

P-CHANNEL

D

S

G

Q410
AO3409

P-CHANNEL

1

32

R453 10KR453 10K

C410

0.1uF

C410

0.1uF

C420

0.1uF

C420

0.1uF R439

20K

R439

20K

R421

4.7R421 4.7

G

S

D

Q417

2SK3018

G

S

D

Q417

2SK3018

1

2 3

R413
680K

R413
680K

R461
47K/NC

R461
47K/NC

R431
750

R431
750

C435

0.1uF

C435

0.1uF

U402

TPS60400/NC

U402

TPS60400/NC

OUT

1

IN

2

CFLY-

3

GND

4

CFLY+

5

R438 20KR438 20K

C413

NC

C413

NC

L410

FB(50)

L410

FB(50)

L405

50

L405

50

+

CE415

47uF/6.3v

+

CE415

47uF/6.3v

12

L401 10uH/NCL401 10uH/NC

R426

51K

R426

51K

+

CE418
47uF/6.3v

+

CE418
47uF/6.3v

12

C422

0.1uF

C422

0.1uF

C428

0.1uF

C428

0.1uF

+

CE413

100uF/25V

+

CE413

100uF/25V

12

C417 68pFC417 68pF

Q411

2SB1132

Q411

2SB1132

1

23

R407 2K 1%R407 2K 1%

L413

10uH

L413

10uH

R433

0R433 0

L407

FB(50)

L407

FB(50)

Q414

2SB1132

Q414

2SB1132

1

2 3

C418

0.1uF

C418

0.1uF

L409

47uH(LH)

L409

47uH(LH)R432 10KR432 10K

R409

750

R409

750

+

CE412

220uF/10V

+

CE412

220uF/10V

12

R454 100KR454 100K

R415

15R415 15

R401

10kR401 10k

R437

4.7K

R437

4.7K

C429

0.1uF

C429

0.1uF

D

S

G

Q408

AO3409

P-CHANNEL

D

S

G

Q408

AO3409

P-CHANNEL

1

3 2

R434 0R434 0

C431

NC

C431

NC

J402
2x1 W/HOUSING
CON2_2.0MM_DIP_B

J402
2x1 W/HOUSING
CON2_2.0MM_DIP_B

2

1

R423 10KR423 10K

R452

OPEN

R452

OPEN

C427

0.1uF

C427

0.1uF

C423

2200pF/NCC423 2200pF/NC

J401

HEADER 24 SMD0.5 TOP
CON24_0.5MM

J401

HEADER 24 SMD0.5 TOP
CON24_0.5MM

10
9
8
7
6
5
4
3
2
1

11

13
12

15
14

16

20
19
18
17

24
23
22
21

25
26

C403

0.1uF

C403

0.1uF

D403

BAT54CD403BAT54C

3

2

1

+

CE404

10uF/16V/NC

+

CE404

10uF/16V/NC

12

+

CE406

100uF/10V

+

CE406

100uF/10V

12

R447 10KR447 10K

R420

680KR420 680K

C433

0.1uF

C433

0.1uF

L414

10uH

L414

10uH

C425

0.1uF

C425

0.1uF

R440

0R440 0

B

C

E

Q416

2N3904

B

C

E

Q416

2N3904

1

3 2

R429 15R429 15

L402

10uH/NCL402 10uH/NC

C412

0.1uF

C412

0.1uF

C421

0.1uF

C421

0.1uF

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-31 3-32

LGE Internal Use Only

4. AV CIRCUIT DIAGRAM

05.AV

LG & MALATA

Tuesday, November 20, 2007

05.AV

LG & MALATA

Tuesday, November 20, 2007

05.AV

LG & MALATA

Tuesday, November 20, 2007

L_SPEAKER

A_MUTE_SW SP_R-

ASPDIF

MR_OUT

4558_VCC2

ML_OUT

SP_R­SP_R+

4558_VCCSTANDBY

4558_VCC1

R_SPEAKER

SP_L-

ASPDIF

A_MUTE_SW

4558_VCC1

SP_L-

SP_L+

SP_R+

SP_R-

4558_VCC1

GND

SP_R-

SP_MUTE

SP_L-

AL

AR

SP_L­SP_L+

AL
AR

A_MUTE_SW

A+5V

MR_OUT

4558_VCC2

BAT_OUT

STANDBY

ML_OUT

CVBS

CVBS

A-5V

SP_MUTE

R_SPEAKER

L_SPEAKER

4558_VCC2

ML_OUT

A_MUTE_SW

A_MUTE_SW

MR_OUT

4558_VCC

A-5V

BAT_OUT

A+5V

A+5V

A+5V

A+5V

A+5V

A+5V

A+5V

ASPDIF

2

AL

2

AR

2

A_MUTE_SW

6

SP_L-

7

SP_L+

7

CVBS

2

A+5V

4

GND

2,3,4,6,7,

SP_R-

7

SP_R+

7

BAT_OUT

4,6,7

STANDBY

4,6

A-5V

4

SP_MUTE

6

MR_OUT

8

ML_OUT 8

POWER I/F

OFF-PAGE CONNECTION

MPEG I/F

--> <-->

L511
FB(600)

L511
FB(600)

+

CE503
1uF/50V

+

CE503
1uF/50V

1 2

C507

2000pF

C507

2000pF

R514
100K

R514
100K

+

CE511

10uF/16V

+

CE511

10uF/16V

1 2

L509
FB(50)

L509
FB(50)

C504
56pF-102(EMC)

C504
56pF-102(EMC)

R526
1K

R526
1K

R558
100k

R558
100k

R547

5.1K

R547

5.1K

R522

0R522 0

B

C

E

Q511

2N3904

B

C

E

Q511

2N3904

1

3 2

C515

NC

C515

NC

R527
0/NC

R527
0/NC

R502

10KR502 10K

R505

10K

R505

10K

R541
10K

R541
10K

B

C

E

Q516

2N3904

B

C

E

Q516

2N3904

1

3 2

+

-

U504B

TJM4558

+

-

U504B

TJM4558

5

6

7

8 4

R550

10k

R550

10k

R515
1K

R515
1K

C506

0.1uF

C506

0.1uF

+

CE508

10uF/16V

+

CE508

10uF/16V

12

L512
FB(600)

L512
FB(600)

R540
100K

R540
100K

C508

680pF

C508

680pF

C525

2000pF

C525

2000pF

R538

4.7K

R538

4.7K

R562

10k

R562

10k

C530
100pF

C530
100pF

D501

1N4148

D501

1N4148

1 2

+

CE507

100uF/25V

+

CE507

100uF/25V

12

R561

10k

R561

10k

R506
1K

R506
1K

C527

330pF

C527

330pF

C503
22pF

C503
22pF

+

CE504
1uF/50V

+

CE504
1uF/50V

12

R523 10KR523 10K

R530
100

R530
100

C516

220pFC516 220pF

Q509

BAT54S

Q509

BAT54S

321

C512

0.1uF

C512

0.1uF

R551

5.1KR551 5.1K

R555
100

R555
100

C509
22pF

C509
22pF

R536

75 1%

R536

75 1%

R529

4.7K

R529

4.7K

TP502TP502

R521
47K

R521
47K

C523
ESD(15pF)

C523
ESD(15pF)

L507
FB(50/600EMC)

L507
FB(50/600EMC)

R552
100K

R552
100K

B

C

E

Q503

2N3904

B

C

E

Q503

2N3904

1

3 2

R554
150

R554
150

L504
FB(50)/NC

L504
FB(50)/NC

R520

4.7K

R520

4.7K

C524

0.1uF

C524

0.1uF

B

C

E

Q804

Q_2N3906

B

C

E

Q804

Q_2N3906

2 3

1

R546
1K

R546
1K

R545
10k

R545
10k

B

C

E

Q514

3906

B

C

E

Q514

3906

2 3

1

B

C

E

Q508

2N3904

B

C

E

Q508

2N3904

1

3 2

C513
680pF

C513
680pF

C511
NC

C511
NC

R549

8.2K

R549

8.2K

B

C

E

Q512

2N3904

B

C

E

Q512

2N3904

1

3 2

R539

10k

R539

10k

L510
FB(600)

L510
FB(600)

R512

4.7K

R512

4.7K

R511
100

R511
100

R560

10k

R560

10k

L513

FB(600)

L513

FB(600)

PHONEJACK

J504

HPJACK

PHONE JACK

PHONEJACK

J504

HPJACK

PHONE JACK

2

3

4

5

6

1

PT2303

U502
PT2303

PT2303

U502
PT2303

Shutdown

1

GND1

2

+IN2

9

VDD

4

-IN2

11

-IN1

6

GND2

7

+IN1

8

+OUT2

14

VREF

10

-OUT2

12

HP-IN

16

VDD

13

-OUT1

5

GND3

15

+OUT1

3

R524
10

R524
10

+

CE509

10uF/16V

+

CE509

10uF/16V

12

R559
10k

R559
10k

R557

10k

R557

10k

TP506TP506

C528
68pF

C528
68pF

L503
FB(50)/NC

L503
FB(50)/NC

R543
100k

R543
100k

J511

COAXIAL JACK(ST-3531)J511 COAXIAL JACK(ST-3531)

2

3 4

1

5

6

R553

2K

R553

2K

B

C

E

Q513
2N3904

B

C

E

Q513
2N3904

1

3 2

R544
22K

R544
22K

+

CE502

100uF/10V

+

CE502

100uF/10V

1 2

TP501TP501

R534
100

R534
100

C502
100pF

C502
100pF

B

C

E

Q507

2N3904

B

C

E

Q507

2N3904

1

3 2

L505

1.8uH

L505

1.8uH

B

C

E

Q501

2N3904

B

C

E

Q501

2N3904

1

3 2

+

CE513

1UF/50V

+

CE513

1UF/50V

12

R519
10K

R519
10K

C522
ESD(15pF/56P)

C522
ESD(15pF/56P)

R509
22K

R509
22K

+

CE514

10uF/16V

+

CE514

10uF/16V

1 2

R516

10K

R516

10K

J510

PJ-3513B-3531
J510

PJ-3513B-3531

1122334

4

5

5

6

6

C514

104/NC

C514

104/NC

R532
10K

R532
10K

PHONEJACK

J501

HPJACK

PHONE JACK

PHONEJACK

J501

HPJACK

PHONE JACK

2

3

4

5

6

1

+

CE505
1uF/50V

+

CE505
1uF/50V

1 2

R528

5.1K

R528

5.1K

+

CE501

100uF/10V

+

CE501

100uF/10V

1 2

L502

FB(50)

L502

FB(50)

VR501

VOLUME

VR501

VOLUME

1

1

2

2

3

3

4

4

5

5

6

6

7

7

C526
56pF-102(EMC)

C526
56pF-102(EMC)

B

C

E

Q805

Q_2N3906

B

C

E

Q805

Q_2N3906

2 3

1

R556

10

R556

10

B

C

E

Q517

2N3904

B

C

E

Q517

2N3904

1

3 2

R504
10K

R504
10K

R548
10K

R548
10K

L508

FB(50/600EMC)

L508

FB(50/600EMC)

Q515

BAT54S

Q515

BAT54S

321

R517
1K

R517
1K

R510
100

R510
100

C505
100pF

C505
100pF

+

CE506
22uF/16V

+

CE506
22uF/16V

12

C519

0.1uF

C519

0.1uF

C510

220pFC510 220pF

B

C

E

Q510

2N3904

B

C

E

Q510

2N3904

1

3 2

+

CE515

1uF/50V

+

CE515

1uF/50V

12

R507
100K

R507
100K

+

-

U504A

TJM4558

+

-

U504A

TJM4558

3

2

1

8 4

R535
10K

R535
10K

R518
1K

R518
1K

R542
47K

R542
47K

+

CE517

47uF/10V/NC

+

CE517

47uF/10V/NC

1 2

+

CE510

10uF/16V

+

CE510

10uF/16V

1 2

+

CE516
47uF/10V

+

CE516
47uF/10V

12

R508
100K

R508
100K

L514
10uH

L514
10uH

+

CE512

10uF/16V

+

CE512

10uF/16V

1 2

R525
10K

R525
10K

LGE Internal Use Only

3-33 3-34

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

5. CHARGE CIRCUIT DIAGRAM

06.CHARGE

LG & MALATA

Saturday, November 17, 2007

06.CHARGE

LG & MALATA

Saturday, November 17, 2007

06.CHARGE

LG & MALATA

Saturday, November 17, 2007

A_MUTE_SW

AD_KEY

T_CTRL

VREF

BAT_OUT

GND

VREF

SP_MUTE

T_CTRL

DC_IN

AD_K

LCD_CTRL

GND

STANDBY

B+

P-

P+

B-

BC

AD_U
AD_I

LCD_CTRL

AD_PR

RED

AD_PR

AD_K

PWM

KEY_GND

IR

GREEN VREF1

GREEN

PWM

AD_U

P+

AD_I

5VA

IR_OUT

STANDBY

SP_MUTE

P-

IR_OUT

KEY_GND

A_MUTE_SW

P+

RED

IR

BAT_OUT

5VA

5VA

5VA

5VA

5VA VREF1

5VA

AD_K

7

KEY_GND

7

A_MUTE_SW

5

SP_MUTE

5

IR_OUT

2

STANDBY

4,5

IR

7

5VA

4,7

BAT_OUT

4,5,7

GND

2,3,4,5,7

LCD_CTRL 7

E

C

3

2

9013

MPEG I/F

1

BATTERY

B

OFF-PAGE CONNECTION

POWER I/F

+

CE604
220uF/16V

+

CE604
220uF/16V

12

R618

0.15 1W

R618

0.15 1W

R631
1K

R631
1K

TP620TP620

R627

330R627 330

R619

0.15 1W

R619

0.15 1W

C606

1000pF

C606

1000pF

TP615TP615

C617

0.1uF

C617

0.1uF

U605
SM9926K

U605
SM9926K

S1

1G12S23G24

D2

5D26D17D18

C614

0.1uF

C614

0.1uF U602

AZ431 0.5%

U602

AZ431 0.5%

TP619TP619

R622

R

R622

R

R653
51K

R653
51K

R629
330

R629
330

R610

10K

R610

10K

R626

9.1K 1%R626 9.1K 1%

R636
20K/NC

R636
20K/NC

R630

2.4K

R630

2.4K

C608

0.1uF

C608

0.1uF

R638

10K/NC

R638

10K/NC

C615

0.1uF

C615

0.1uF

R615

1K

R615

1K

C607

0.1uF

C607

0.1uF

C611

NC/20p

C611

NC/20p

+

CE606
100uF/25V

+

CE606
100uF/25V

12

L601

FUSE(2A)

L601

FUSE(2A)

R613
10K

R613
10K

D606

SS5822D606 SS5822

1 2

C622

0.1uF

C622

0.1uF

C610

0.1uF

C610

0.1uF

B

C

E

Q602

3906

B

C

E

Q602

3906

2 3

1

R634
10K/NC

R634
10K/NC

B

C

E

Q603

2N3904

B

C

E

Q603

2N3904

1

3 2

D602
SS5822

D602
SS5822

1 2

B

C

E

Q601
2N3904

B

C

E

Q601
2N3904

1

3 2

R614
10

R614
10

C621

0.1uF

C621

0.1uF

+

CE605
220uF/25V

+

CE605
220uF/25V

12

R617

0.15 1W

R617

0.15 1W

TP614TP614

R639
0

R639
0

R642

1K R6421K

L602
33UH

L602
33UH

TP607TP607

B

C

E

Q605

3906/NC

B

C

E

Q605

3906/NC

2 3

1

C618

0.1uF

C618

0.1uF

D603

LL4148

D603

LL4148

1 2

R625

3.6K

R625

3.6K

R632
330

R632
330

R608

10K 1%

R608

10K 1%

R616
51

R616
51

TP611TP611

TP609TP609

U603
GT6312A

U603
GT6312A

RED

3

SAM_U

9

SAM_I

10

GREEN

4

SAM_T

11

OSC

14

SAM_V

12

DO

2

TC_SET

1

VDD

13

FB

15

PWM

5

GND

8

RST

7

PWMT

6

VREF

16

DC_CTL

17

CHG_CTL

18

CC_SET

19

SC_SET

20

+

CE609

10U/16V/NC

+

CE609

10U/16V/NC

12

R611

150K 1%

R611

150K 1%

+

CE602

47uF/25V

+

CE602

47uF/25V

12

R652
150K

R652
150K

+

CE608

47U/25V/NC

+

CE608

47U/25V/NC

12

TP612TP612

U606
HT7150/NC

U606
HT7150/NC

VIN

2

GND

1

OUT

3

C626
104/NC

C626
104/NC

TP517TP517

R624
10K

R624
10K

C612

0.1uF

C612

0.1uF

C624

0.1uF

C624

0.1uF

TP618TP618

TP621TP621

R620

560R620 560

R637
10K/NC

R637
10K/NC

R612

R

R612

R

D604

1N5822(NC)

D604

1N5822(NC)

1 2

R628
51K

R628
51K

R633

1KR633 1K

+

CE607
100uF/10V

+

CE607
100uF/10V

12

B

C

E

Q604
2N3904/NC

B

C

E

Q604
2N3904/NC

1

3 2

J601

CON3_2.0MM_DIP_B

J601

CON3_2.0MM_DIP_B

1

2

3

TP610TP610

C613

0.1uF

C613

0.1uF

C619

0.1uF

C619

0.1uF

R635

1KR635 1K

+

CE610

47U/10V

+

CE610

47U/10V

12

C616

0.1uF

C616

0.1uF

C620

0.1uF

C620

0.1uF

+

CE603

100uF/16V/NC

+

CE603

100uF/16V/NC

12

R656

FB

(1206-100)

R656

FB(1206-100)

R657

FB

(1206-100)

R657

FB(1206-100)

U604

R5460

U604

R5460

Dout

1

Cout

2

V-

3

VC

4

VDD

5

VSS

6

C601

0.1uF

C601

0.1uF

POWERJACK

J604

POWERJACK

POWERJACK

J604

POWERJACK

1
3
2

4

5

R623
2K

R623
2K

U601
APM4953K

U601
APM4953K

S1

1

G1

2

S2

3

G2

4

D2

5

D2

6

D1

7

D1

8

D607
BAT54S

D607
BAT54S

3

2

1

TP518TP518

D601
SS5822

D601
SS5822

1 2

C625
104/NC

C625
104/NC

R655

FB

(1206-100)

R655

FB(1206-100)

R604
51K

R604
51K

R621
51K 1%

R621
51K 1%

LED603

LED3

LED603

LED3

1

2

3

TP616TP616

C623

0.1uF

C623

0.1uF

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-35 3-36

LGE Internal Use Only

6. LCD IF CIRCUIT DIAGRAM

07.LCD I/F

LG & MALATA

Saturday, November 17, 2007

07.LCD I/F

LG & MALATA

Saturday, November 17, 2007

07.LCD I/F

LG & MALATA

Saturday, November 17, 2007

DVD_KEY5

DVD_KEY5

DVD_KEY3

DVD_KEY2

DVD_KEY1

CKV

3.3V

DVD_SLEEP

VCOMO

89L_B

89L_G

89L_R

CPH1

STHL

OEH

OEV

CKV

STVL

OEV
OEH

GND

5VA

DVD_SLEEP

KEY_GND

VCOMO

DVD_SLEEP

IR

AD_K

KEY_PLAY
KEY_GND

AD_K

SP_R­SP_R+

SP_L­SP_L+

DVD_KEY5

DVD_KEY4

DVD_KEY1
DVD_KEY2
DVD_KEY3

3.3V

89L_R

SP_R-

SP_L+

SP_R+
SP_L-

LCD_3.3V

5VA

VCC_5V

KEY_PLAY

89L_G

DVD_KEY1

89L_B

DVD_KEY2

CPH1

LCD_3.3V

DVD_KEY3

BAT_OUT

LCD_CTRL

GND

STHL

IR

BAT_OUT
LCD_CTRL

DVD_KEY4

STVL

VCOMO

2

89L_B

2

89L_G

2

89L_R 2

CPH1

2

STHL

2

OEH

2

OEV

2

CKV

2

STVL

2

5VA

4,6

KEY_GND

6

IR 6

DVD_SLEEP

2

AD_K

6

GND

2,3,4,5,6

BAT_OUT

4,5,6

LCD_CTRL

6

SP_L-

5

SP_L+

5

SP_R-

5

SP_R+

5

DVD_KEY1

2

DVD_KEY2

2

DVD_KEY3

2

DVD_KEY5

2

DVD_KEY4

2

VCC_5V

4

LCD_3.3V

4

3.3V 2,3,4

TO SERVO

OFF-PAGE CONNECTION

PANEL T-CON I/F

EMC

L705 FB(600)L705 FB(600)

L710

FB(600)L710 FB(600)

L709

FB(600)L709 FB(600)

R716

0R716 0

J701

CON8_0.8MM

J701

CON8_0.8MM

1

2

3

4

5

6

7

8

9

10

+

CE701
47uF/25V

+

CE701
47uF/25V

12

L717 FB(600)L717 FB(600)

L708

FB(600)L708 FB(600)

R715

0R715 0

C704

33P

C704

33P

L714

FB(600)L714 FB(600)

L701

FB(50)L701 FB(50)

C709

0.1uF

C709

0.1uF

J704

CON20_0.8MM

J704

CON20_0.8MM

10
9
8
7
6
5
4
3
2
1

11

13
12

15
14

16

20
19
18
17

21

22

L707 FB(600)L707 FB(600)

R714 33/120

(EMC)R714 33/120 (EMC)

R707

0R707 0

C703

33P

C703

33P

L713

FB(600)L713 FB(600)

C705

33P

C705

33P

L712

FB(600)L712 FB(600)

C706

33P

C706

33P

J702

CON3

J702

CON3

1

2

3 4

5

L706 FB(600)L706 FB(600)

L702

FB(600)L702 FB(600)

R713 33/120

(EMC)R713 33/120 (EMC)

C702

33P

C702

33P

R704
NC

R704
NC

R712 33/120

(EMC)R712 33/120 (EMC)

R711 33/120

(EMC)R711 33/120 (EMC)

C710

33P

C710

33P

C707

33P

C707

33P

R710

33R710 33

L716

FB(600)L716 FB(600)

B

C

E

Q702
3904

B

C

E

Q702
3904

1

3 2

R709 33/120 (EMC)R709 33/120 (EMC)

J703

CON12

J703

CON12

10
9
8
7
6
5
4
3
2
1

11

12

R705

10K

R705

10K

L718

FB(600)L718 FB(600)

R708

0R708 0

L715

FB(600)L715 FB(600)

TP705TP705

L704

FB(600)L704 FB(600)

L703 FB(600)L703 FB(600) R706

10K

R706
10K

L711

FB(600)L711 FB(600)

LGE Internal Use Only

3-37 3-38

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

7. AUDIO CIRCUIT DIAGRAM

SCL

FM_MUTE

ML_OUT

MR_OUT

GND

3.3V

MR_OUT

SDA

SCL

FM_MUTE

ML_OUT

ANT

FM+3.3VFM+3.3V

SDA

ANT

3.3V

FM+3.3V

FM+3.3V

GND

2,3,4,5,6,7

3.3V

2,3,4

MR_OUT

5

FM_MUTE 2

SCL

2,3

SDA

2,3

ML_OUT

5

C

SMBT3906

1

2

EB

3

2

D

AF2301P

1

SG

3

H:FM
L:FM

EMC

EMC

POWER I/F

OFF-PAGE CONNECTION

MPEG I/F

AV I/F

R809
3K

R809
3K

L802

220nH(NC/EMC)

L802

220nH(NC/EMC)

C811
104

C811
104

C820
39pF(15P/EMC)

C820
39pF(15P/EMC)

C815

474C815 474

Q801
BFG540W/X

Q801
BFG540W/X

C

1

E

2

B

3

E

4

L801

FB

L801

FB

C816

474C816 474

C807
104

C807
104

C801

105C801 105

R810

5.1K

R810

5.1K

C808
105

C808
105

R805

5.1K

R805

5.1K

C819

102

C819

102

R808
10K

R808
10K

C814

100pF

C814

100pF

R813
10K

R813
10K

C809
104

C809
104

C818
15pF

C818
15pF

R816

0/NCR816 0/NC

R804
10K

R804
10K

C817

15pF

C817

15pF

R814

5.1kR814 5.1k

C806
10uF/10V

C806
10uF/10V

QN8000

U801
QN8000

QN8000

U801
QN8000

GND

1

GND

2

RFO

3

CEN

4

VCC

5

XTAL1

6

XTAL27GND8GND9LPF

10

GSL

20

MOD

19

SDA

18

SCL

17

GND

16

SEB

15

AL

14

GND

13

GND

12

AR

11

PAD

21

R801

0

R801

0

R803

NC/1k

R803

NC/1k

R815

5.1k

R815

5.1k

L803
220nH

L803
220nH

R802

1k

R802

1k

+

CE801

220uF/6.3V

+

CE801

220uF/6.3V

12

C812

102

C812

102 L804

560nH

L804

560nH

B

C

E

Q802

SMBT3906

B

C

E

Q802

SMBT3906

2 3

1

Y801

7.6MHZ

Y801

7.6MHZ
1 2

3

R811 0/600R /EM

CR811 0/600R /EMC

R819

OR

R819

OR

C805
1uF/10V

C805
1uF/10V

R807

47K

R807

47K

C802

105C802 105

C803

56pF

C803

56pF

C810
105

C810
105

R818

3.3K

R818

3.3K

R812

47K

R812

47K

C813

10uF/10V

C813

10uF/10V

G

S

D

Q803

MI2301

G

S

D

Q803

MI2301

1

23

R817

10KR817 10K

ANT801

ANTENNA

ANT801

ANTENNA

1

R806

5.1K

R806

5.1K

C804
104

C804
104

Saturday, November 17, 2007Saturday, November 17, 2007Saturday, November 17, 2007

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-39 3-40

LGE Internal Use Only

8. KEY CIRCUIT DIAGRAM

ROUT

BOUT

ROUT

BOUT
GOUT

STHR

OEH

STHL

OEV
UND
CKV
STVL
STVR

CPH1

LNR

+15V

+7.5V

IR

89L_B

5VA

DVD_KEY4

R_IN

89L_G

DVD_KEY1

KEY_PLAY

B_IN

IR

DVD_KEY2

G_IN

89L_R

-10V

GND

BIAS

89L_G
89L_B
GND
CPH1

STVL

STHL

LCD_3.3V

89L_R

OEV

VCOMO

5VA

GND

LCD_3.3V

CKV

OEH

SP_R­SP_R+

DVD_KEY5

SP_L-

DVD_KEY3

SP_L+

5VD

5VD

7VD5

VCOMO

+7.5V

-10V

VCOM

VCOM

LCD_3.3V

SP_L-

SP_R+
SP_R-

SP_L+

R_IN

G_IN

GOUT

B_INKEY_PLAY

DVD_KEY1

DVD_KEY3

DVD_KEY5

DVD_

KEY4

5VD

UND

5VD

LNR

DVD_KEY2

GND

SP_L-

SP_R+
SP_R-

SP_L+

5VD

LCD_3.3V

BIAS

BIAS

7VD5

7VD5

BIAS7VD5

Vdc

Vdc

Vdc

GND

CPH3
STHR
STHL

CKV

U/D

CPH1

VCOM
VCOM
OEV

VGL

VR
GND

VCC

VCC

L/R

VGH

VG

STVR

MOD

VB

AVSS
AVDD

CPH2

OEH

STVL

1.Ref

2.Anode

3.Cathode

123

89P VCOM DAC OUTPUT

Spec Sheet No.

DC TO DC

RCR2561

10

4

16

14

19

11

6

20

15

13
12

17

2

23

5

3

22

18

9
8
7

24

1

21

25

26

CPT CLAA070WA03

InnoLux AT070TN04

AUO A070FW03

Elite Star LR070WA01B

PVI PW070XU3

C55ESD(15pF) C55ESD(15pF)

R23

160

R23

160

CN2

CON20_0.8MM

CN2

CON20_0.8MM

10

9

8

7

6

5

4

3

2

1

11

13

12

15

14

16

20

19

18

17

21

22

IR G VCC

IR1
HRM538CB5100 DIP

IR G VCC

IR1
HRM538CB5100 DIP

123

R36

4.7K

R36

4.7K

C46

104

C46

104

C51ESD(15pF)C51ESD(15pF)

D3

BAT54SD3BAT54S

3

2

1

K1

PLAYK1 PLAY

1 2

C53ESD(15pF)C53ESD(15pF)

K4 NEXTK4 NEXT

1 2

C19

22uF/16V

C19

22uF/16V

C25

105

C25

105

R30

160

R30

160

TP4TP4

C38

10uF/16VC38 10uF/16V

B

C

E

Q3
SMBT3904

B

C

E

Q3
SMBT3904

1

3 2

TP1TP1

D1
D_15VD1D_15V

1 2

R27
47K

R27
47K

C7

4.7u/25uFC7 4.7u/25uF

R42

100/75

R42

100/75

C45

10uF/16VC45 10uF/16V

C42

105C42 105

D2
D_10VD2D_10V

1 2

R3
10KR310K R4

30KR430K

C47

100pF

C47

100pF

R33

0R

R33

0R

R11

0R11 0

CN3

CON8_0.8MM

CN3

CON8_0.8MM

1
2
3
4
5
6
7
8

9

10

K3

PLAUSEK3 PLAUSE

1 2

U1
NJM3414AM

U1
NJM3414AM

A OUT

1

A- IN

2

A+ IN

3

GND

4

B+ IN

5

B- IN

6

B OUT

7

V+

8

C39

100pF

C39

100pF

TP10TP10

R26
430/270

R26
430/270

C29
104

C29
104

C32

100pF

C32

100pF

R32

0R

R32

0R

R40
100

R40
100

D5

BAT54SD5BAT54S

3

2

1

R5
10KR510K

C23

104

C23

104

C31

100pF

C31

100pF

C30
22uF/10V

C30
22uF/10V

D6

1N5819D61N5819

1 2

R10

0R10 0

R44

NCR44 NC

R39
47K

R39
47K

C6

4.7u/25uFC6 4.7u/25uF

C49

100pF

C49

100pF

R22

100/75

R22

100/75

C44

10uF/16V

C44

10uF/16V

TP7TP7

C40

100pF

C40

100pF

L3

0RL3 0R

C13

104

C13

104

U3
MP1540U3MP1540

IN

5SW1

EN

4

GND

2

FB

3

C43
20pF

C43
20pF

R35

NCR35 NC

C17
105

C17
105

C34

104

C34

104

R2

2KR2 2K

C36
(NC)104

C36
(NC)104

TP3TP3

C50ESD(15pF)C50ESD(15pF)

C21

22uF/16V

C21

22uF/16V

TP5TP5

R37
39k

R37
39k

R14
10K

R14
10K

C10

104

C10

104

L6

1.8uHL61.8uH

C15
104

C15
104

C35

10uF/16V

C35

10uF/16V

C24

105C24 105

B

C

E

Q2
SMBT3904

B

C

E

Q2
SMBT3904

1

3 2

C9 105C9 105

C52ESD(15pF)C52ESD(15pF)

C4 10uF/16VC4 10uF/16V

D4

BAT54SD4BAT54S

3

2

1

C3
104C3104

C8

4.7uF/25VC84.7uF/25V

R18
20K

R18
20K

R9
330R9330

L2

6.8uHL2 6.8uH

R16
430/270

R16
430/270

R41
10K

R41
10K

R15
39k

R15
39k

C16
104

C16
104

R29

100/75

R29

100/75

R25
39K

R25
39K

R8

TBD/10KR8TBD/10K

R17
47K

R17
47K

TP8TP8

L1

4.7uHL1 4.7uH

R34

NC

R34

NC

K2

STOPK2 STOP

1 2

R19
51K

R19
51K

B

C

E

Q1
SMBT3904

B

C

E

Q1
SMBT3904

1

3 2

R31

NC

R31

NC

C5

10uF/16VC5 10uF/16V

R28
10K

R28
10K

TP2TP2

C2

10uF/16VC210uF/16V

C27
104

C27
104

R43

160

R43

160

R1

6.8KR16.8K

K5

PREK5 PRE

1 2

C48

100pF

C48

100pF

R7
10KR710K

+

C20

47uF/10V

+

C20

47uF/10V

12

C28
104

C28
104

R38
430/270

R38
430/270

R6
20KR620K

CN1

CON26_0.5MM
CN1

CON26_0.5MM

10

9

8

7

6

5

4

3

2

1

11

13

12

15

14

16

20

19

18

17

24

23

22

21

26

25

27

28

VR2
10K

VR2
10K

1

2

3

R21
10K

R21
10K

U2
78L05U278L05

GND

2

IN

3

OUT

1

C22

22uF/16V

C22

22uF/16V

C41

100pF

C41

100pF

C54ESD(15pF)C54ESD(15pF)

C11 105C11 105

C14

104

C14

104

R20
10K

R20
10K

C12

105

C12

105

C33

100pF

C33

100pF

C26

10uF/16VC26 10uF/16V

L4

1.8uHL41.8uH

C37

105C37 105

L7

1.8uHL71.8uH

L5

4.7uHL5 4.7uH

TP6TP6

TP9TP9

C1

10uF/16VC110uF/16V

C18
104

C18
104

R24
10K

R24
10K

Monday, October 15, 2007Monday, October 15, 2007Monday, October 15, 2007

LGE Internal Use Only

3-41 3-42

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

9. LCD KEY CIRCUIT DIAGRAM

DVD_KEY2

DVD_KEY1

SLEEP

DVD_KEY2

SLEEP

AD_K

DVD_KEY5

DVD_KEY3

DVD_KEY1

AD_K KEY_PLAY

KEY_PLAY
KEY_GND

DVD_KEY3

KEY_GND

DVD_KEY5

DVD_KEY

R801 1K 1%R801 1K 1%

C801

ESD(15pF)

C801

ESD(15pF)

K801

SETUP

K801

SETUP

1 2

R809 39K 1%R809 39K 1%

R807

8.2K 1%R807 8.2K 1%

R806

4.7K 1%R806 4.7K 1%

C808

ESD(15pF)

C808

ESD(15pF)

R805 2.7K 1%R805 2.7K 1%

C807

ESD(15pF)

C807

ESD(15pF)

K813
RI-01CS0BM

K813
RI-01CS0BM

R804

2K 1%R804 2K 1%

C806

ESD(15pF)

C806

ESD(15pF)

C802

ESD(15pF)

C802

ESD(15pF)

K812 DISPLAYK812 DISPLAY

1 2

R803 1.5K 1%R803 1.5K 1%

C805

ESD(15pF)

C805

ESD(15pF)

J801

CON10_1.0MM

J801

CON10_1.0MM

10

9

8

7

6

5

4

3

2

1

11

12

K811 MODEK811 MODE

1 2

R802 1.2K 1%R802 1.2K 1%

C804

ESD(15pF)

C804

ESD(15pF)

K810COLOR/BRIGHTK810COLOR/BRIGHT

1 2

K809 LEFTK809 LEFT

1 2

K808 RIGHTK808 RIGHT

1 2

K807 LCD_MODEK807 LCD_MODE

1 2

K806 POWERK806 POWER

1 2

R808 15K 1%R808 15K 1%

K805

MENU

K805

MENU

1 2

K804

ENTER

K804

ENTER

1 2

K803

DOWN

K803

DOWN

1 2

K802

UP

K802

UP

1 2

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-43 3-44

LGE Internal Use Only

CIRCUIT VOLTAGE CHART

MODE

PIN NO.

STOP PLAY

U1(MP2359)

1 4.10 4.12
2 -10.78 -10.78
3 -9.61 -9.61
4 -0.05 0
5 9.91 9.88
6 -0.04 -0.04

U1(NJM3414AM)

1 -0.29 -0.25
2 0.02 0.02
3 0.02 0.02
4 -9.49 -9.55
5 -0.29 -0.25
6 -0.29 -0.26
7 -0.29 -0.26
8 5.06 5.06

U2(78L05)

1 5.06 5.06
2 0.02 0.02
3 7.56 7.56

U201(MT1389LP)

1 2.01 2.21
2 2.01 2.23
3 2.01 2.22
4 2.01 2.19
5 2.04 2.59
6 2.04 2.62
7 1.87 1.87
8 3.33 3.33
9 0.92 0.94

10 0.87 0.92

11 0 0
12 2.02 2.02
13 1.41 1.41
14 0.59 0.59
15 0.12 0.18
16 0.12 0.18
17 3.33 2.51
18 3.33 3.33
19 3.33 3.33
20 1.41 1.94
21 1.41 1.32
22 0.01 3.26
23 1.96 3.27
24 1.41 1.40
25 1.38 1.31
26 3.33 3.33
27 0.02 0.01
28 0.02 0.01
29 4.87 3.33
30 0 0
31 0 0.01
32 1.87 1.87
33 3.31 3.32
34 2.92 2.92
35 2.92 2.92
36 3.30 0.24

MODE

PIN NO.

37 0.01 1.45
38 0.01 1.01
39 0.01 1.22
40 3.31 3.31
41 3.32 3.32
42 0.01 0
43 3.32 3.33
44 5.06 5.02
45 0.97 1.16
46 1.17 1.02
47 0.85 1.08
48 1.19 1.11
49 0.81 1.11
50 3.33 3.33
51 0.65 0.97
52 0.71 0.88
53 0.84 1.09
54 1.87 1.87
55 2.55 2.39
56 0.63 1.05
57 1.27 1.38
58 1.26 1.53
59 1.02 1.87
60 0 0
61 1.06 1.17
62 0.87 0
63 0.97 1.08
64 0.91 1.19
65 2.82 2.40
66 1.60 1.57
67 0 0.04
68 3.33 3.33
69 0.05 0.08
70 0.05 0.06
71 1.12 1.14
72 1.59 1.30
73 1.52 1.68
74 1.04 1.47
75 3.28 3.23
76 3.06 0
77 3.22 3.16
78 1.01 1.56
79 0 0
80 1.07 1.86
81 0.02 0.04
82 0 0.38
83 1.07 2.35
84 3.33 3.33
85 1.04 2.28
86 1.04 1.56
87 2.88 2.88
88 2.93 2.93
89 3.31 3.31
90 1.87 1.87
91 3.31 3.31
92 2.94 0
93 1.14 1.13

STOP PLAY

MODE

PIN NO.

94 0.03 0.04
95 0.22 0
96 3.20 3.20
97 0.07 0.07
98 0.02 0.02

99 1.43 1.44
100 3.32 3.33
101 0.01 0.01
102 0 1.23
103 0 0
104 0.97 1.12
105 3.32 3.33
106 3.32 3.33
107 0.6 0.60
108 0.6 0.60
109 0.6 0.60
110 0 0
111 1.72 1.72
112 1.30 1.30
113 3.31 3.33
114 3.33 3.33
115 3.32 3.32
116 1.2 1.21
117 0 0
118 1.62 1.63
119 1.54 1.61
120 1.58 1.56

1121 3.26 3.26

122 3.26 3.26
123 1.87 1.86
124 0 0
125 0.99 0.99
126 0.99 0.99
127 2.41 1.64
128 2.41 1.59

STOP PLAY

U202(AZ1117H-ADJ)

1 0.63 0.63
2 1.89 1.89
3 3.34 3.34
4 1.89 1.89

U3(MP1540)

1 2.87 2.89
2 0.02 0.02
3 1.26 1.26
4 3.00 3.01
5 3.00 3.01

U301(HY57V641620ETP

1 3.33 3.33
2 1.08 1.13
3 3.33 3.33
4 1.03 1.10
5 1.17 1.01
600
7 1.52 1.08
8 0.53 1.11
9 3.33 3.33

10 0.50 0.98

MODE

PIN NO.

11 0.46 0.88
12 0 0
13 1.29 1.09
14 3.33 3.33
15 2.82 2.40
16 3.28 3.23
17 3.08 2.94
18 3.23 3.16
19 0.01 0.01
20 1.01 1.60
21 1.07 1.85
22 0.02 0.04
23 0.21 0.37
24 1.06 2.37
25 1.04 2.27
26 1.04 1.58
27 3.33 3.33
28 0 0
29 1.05 1.48
30 1.52 0
31 1.59 0
32 1.12 1.12
33 0.05 0.06
34 0.05 0.08
35 0.01 0.04
36 0.01 0
37 3.33 3.33
38 1.60 1.60
39 2.82 2.40
40 0 0
41 0 0
42 0.92 1.19
43 3.33 3.33
44 0.99 1.07
45 0.89 1.12
46 0 0
47 1.07 1.17
48 1.03 1.38
49 3.33 0
50 0 1.55
51 1.64 1.37
52 0 0
53 0.1 1.04
54 0 0

STOP PLAY

IC302(AT26DF161A)

1 3.30 0.16
2 0.01 1.47
3 3.33 3.33
400
5 0.01 0.95
6 0.01 1.20
7 3.33 3.33
8 3.33 3.33

U401(AM5898N)

102.40
2 1.29 1.28
3 1.26 1.27

MODE

PIN NO.

4 0.01 0
5 9.92 9.89
6 9.94 9.91
7 9.94 9.91

802.21

9 2.43 2.57
10 5.07 4.95
11 1.40 1.38
12 1.40 1.57
13 0 0
14 2.42 3.27
15 2.42 1.55
16 0 0
17 2.44 2.35
18 2.44 2.42
19 0 0
20 2.44 2.31
21 2.44 2.55
22 1.40 1.38
23 1.40 1.40
24 5.06 4.95
25 0 0
26 0 0
27 0 0
28 9.94 9.88
29 7.51 4.78
30 1.30 1.25
31 1.31 1.30
32 3.14 3.14
33 0 3.26
34 1.41 1.41
35 0 0
36 0 0

STOP PLAY

U502(PT2303Y)

100

200

3 2.43 2.36

4 5.06 4.93

5 2.43 2.36

6 2.43 2.36

700

8 2.43 2.36

9 2.41 2.36
10 2.41 2.35
11 2.43 2.37
12 2.43 2.37
13 5.06 4.93
14 2.43 2.37
15 0 0
16 0 0.03

U504(TJM4558)

1 5.63 5.61

2 4.52 4.50

3 4.52 4.50

400

5 4.52 4.50

6 4.52 4.50

MODE

PIN NO.

7 5.63 5.61
8 9.92 9.89

STOP PLAY

U601(APM4953KC)

1 10.27 10.25
2 10.27 10.25
3 9.95 9.92
4 9.78 9.76
500
600
700
800

U603(GT6312)

1 5.06 5.01
2 5.05 5.01
3 4.95 4.91
400
500
600
7 5.05 5.01
800
900

10 0 0

11 2.62 2.62
12 5.06 5.03
13 0 5.03
14 4.62 4.58
15 0 0
16 0 2.51
17 5.05 5..01
18 4.97 4.93
19 5.02 4.98
20 0 5.01

U604(R5460N208AA)

1 0.04 0.04
2 0.04 0.04
300
400
500
600

U605(SM9926K)

100
2 0.03 0.04
300
4 0.04 0.04
5 0.3 0.3
6 0.3 0.3
7 0.3 0.3
8 0.3 0.3

LGE Internal Use Only

3-45 3-46

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

MODE

PIN NO.

STOP PLAY

CE201

+ 3.33 3.33

-00

CE202

+ 3.33 3.33

-00

CE203

+ 3.33 3.33

-00

CE204

+ 2.10 2.00

-00

CE205

+ 3.33 3.33

-00

CE206

+ 1.41 1.40

-00

CE207

+ 3.33 3.32

-00

CE208

+ 1.87 1.87

-00

CE209

+ 3.33 3.33

-00

CE211

+ 3.33 3.32

-00

CE212

+ 3.26 3.26

-00

CE213

+ 3.33 3.33

-00

CE301

+ 3.33 3.33

-00

CE402

+ 5.07 4.98

-00

CE403

+ 5.07 5.00

-00

CE406

+ 5.06 5.00

-00

CE410

+ 3.39 3.38

-00

CE411

+ 9.80 9.71

-00

MODE

PIN NO.

STOP PLAY

CE412

+ 5.06 5.04

-00

CE413

+ 9.80 9.71

-00

CE415

+ 3.37 3.36

-00

CE416

+ 5.15 4.99

-00

CE417

+ 3.34 3.33

- 3.34 3.33

CE418

+ 3.34 3.33

- 3.34 3.33

CE501

+ 2.45 2.40

-00

CE502

+ 2.45 2.40

-00

CE503

+ 5.37 5.30

-00

CE504

+ 2.46 2.36

-00

CE505

+ 5.37 5.30

-00

CE506

+ 5.06 5.00

-00

CE507

+ 9.78 9.71

-00

CE508

+ 4.05 4.02

- 1.63 1.63

CE509

+ 4.05 4.04

- 1.63 1.63

CE510

+ 1.65 1.50

-00

CE511

+ 5.38 5.30

-00

CE512

+ 5.55 5.50

-00

CE513

MODE

PIN NO.

+ 2.48 2.39

-00

STOP PLAY

CE514

+ 1.89 1.80

-00

CE515

+ 2.47 2.40

-00

CE516

+ 4.45 4.41

-00

CE602

+ 10.13 10.08

-00

CE604

+ 8.40 8.40

-00

CE605

+ 10.14 10.08

-00

CE606

+ 9.80 9.71

-00

CE607

+ 5.06 5.03

-00

CE610

+ 2.50 2.50

-00

CE701

+ 9.79 9.74

-00

Q1(5451)

Emitter 0.63 0.63

Collector 5 5

Base 1.33 1.33

Q2(5451)

Emitter 0.63 0.63

Collector 5 5

Base 1.32 1.32

Q3(5451)

Emitter 0.62 0.62

Collector 5 5

Base 1.32 1.32

Q1(5448)

Emitter 5.59 5.58

Collector 0 0

Base 0 0

Q2(5448)

Emitter 0 0

Collector 0 0

Base 0.70 0.70

Q201

Emitter 0 0

MODE

PIN NO.

Collector 0.11 0.11

Base 0.66 0.66

STOP PLAY

Q202

Emitter 0 0

Collector 3.32 3.33

Base 0.11 0.11

Q402

Source 5.07 5.03

Drain 5.07 5.01

Gate 0 0

Q407

Emitter 5.07 4.966

Collector 0 0

Base 6.52 6.51

Q408

Source 9.92 9.88

Drain 3.42 3.42

Gate 6.41 6.35

Q409

Emitter 0 0

Collector 1.32 1.29

Base 0 0

Q410

Emitter 9.94 9.88

Collector 5.06 5.07

Base 7.60 4.87

Q411

Emitter 3.32 3.34

Collector 0 0.06

Base 3.32 3.33

Q414

Emitter 3.33 3.17

Collector 0 2.16

Base 3.33 2.51

Q415

Emitter 0 0

Collector 0 0

Base 0.7 0.7

Q416

Emitter 0 0

Collector 5.06 0.03

Base 0 0.68

Q417

Emitter 0 0

Collector 0 0

Base 0 3.24

Q418

Emitter 0 0.

Collector 0 0.18

Base 5.01 0.03

Q501

Emitter 0 0

Collector 0 0

Base 0 0

MODE

PIN NO.

STOP PLAY

Q503

Emitter 0 0

Collector 0 0

Base 0 0

Q507

Emitter 0 0

Collector 1.58 1.46

Base 0 0

Q509

Emitter 5.06 4.94

Collector 0.97 1.12

Base 0 0

Q510

Emitter 0 0

Collector 2.3 1.58

Base 0 0

Q511

Emitter 0 0

Collector 0 0

Base 0.61 0.61

Q513

Emitter 0 0

Collector 0 0.03

Base 0.73 0.73

Q514

Emitter 9.95 9.92

Collector 9.92 9.89

Base 9.2 9.17

Q515

Emitter 5.06 4.96

Collector 0.5 0.48

Base 0 0

Q601

Emitter 10.26 10.25

Collector 10.26 10.26

Base 10.26 10.25

Q602

Emitter 10.26 10.25

Collector 0 0

Base 10.26 10.25

Q603

Emitter 0 0

Collector 10.26 10.25

Base 0 0

Q702

Emitter 0 0

Collector 0 0

Base 0 -1.92

MODE

PIN NO.

FM/ON FM/OFF

CE801

+ 3.5 1.84

-00

Q801

Emitter 0 0

Collector 3.43 1.64

Base 0.67 0.54

Q802

Emitter 0.06 3.33

Collector 0 0

Base 0 3.34

Q803

Emitter 3.34 3.34

Collector 3.34 1.8

Base 0.6 3.34

U801(QN8000)

100
200
3 0.02 0.03
4 3.34 1.68
5 3.34 1.68
6 0.86 0.40
7 0.86 0.44
800

900
10 1.56 1.1
11 0 0.1
12 0 0
13 0 0
14 0 0.1
15 0 0
16 0 0
17 0 0
18 3.34 0
19 0 0
20 0 0

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-47 3-48

LGE Internal Use Only

PRINTED CIRCUIT BOARD DIAGRAMS

1. MAIN P.C.BOARD

(TOP VIEW)

LGE Internal Use Only

3-49 3-50

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

MAIN P.C.BOARD

(BOTTOM VIEW)

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-51 3-52

LGE Internal Use Only

2. LCD P.C.BOARD

(TOP VIEW) (BOTTOM VIEW)

3. INVERTER P.C.BOARD

(TOP VIEW) (BOTTOM VIEW)

4. KEY P.C.BOARD

(TOP VIEW) (BOTTOM VIEW)

LGE Internal Use Only

3-53 3-54

Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes