LG DP382B, DP1500, DP382-NR Troubleshooting Manual

PORTABLE DVD

SERVICE MANUAL

MODELS : DP382B, DP-1500, DP382-NR

CAUTION

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

MODELS : DP382B, DP-1500, DP382-NR

SERVICE MANUAL

P/NO : AFN70285045

NOVEMBER, 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

LGE Internal Use Only

SECTION 1

SUMMARY

CONTENTS

PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO 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 VIDEO 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

customized 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

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 ALINE 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

electrolytic 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, cotton­tipped 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.

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.

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.

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.)

LGE Internal Use Only

1-4

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

Only for training and service purposes

SPECIFICATIONS

• GENERAL

Power requirements DC 9V

Power consumption 13.5W

External dimensions 225 x 40 x 175mm (W x H x D)

Net Weight (Approx.) 1.06kg

Operating temperature: 5ºC to 40ºC

Operating humidity 5% to 90%

Laser Semiconductor laser

Signal system PAL

• CONNECTORS

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

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

- Audio: 2Vrms (1kHz, 0dB)

Earphone terminal ø3.5mm stereo mini jack x 2

• LIQUID CRYSTAL DISPLAY

Panel size 8.5 inches wide (diagonal)

Projection system R.G.B. stripe

Driving system TFT active matrix

Resolution 480 x 234 (WQVGA)

• ACCESSORIES

- RCA Video/Audio cable

- AC Adapter (IM090WU-150B)

- Automotive Adapter (G1000233)

- Remote Control

- Battery for Remote Control (Lithium Battery)

* Designs and specifications are subject to change without prior notice.

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

455

296

H

A00

295

CABLE3

263

262

279

453

262

J

261

CABLE2

K

285

450

260

282

288

266

455

266

A44

255

CABLE1

E

D

451

A46

MAIN

I

E

J

H

K

I

G

F

278

289

809

C

B

454

BOARD

255

450

G

450

F

A42

USB

BOARD

294

A48

293

251

264

A

294

A40

252

288

251

450

254

B

286

C

A

LCD

256

BOARD

A51

277

450

452

272

287

77
2

452

KEY

BOARD

A45

D

270

271

451

LGE Internal Use Only

2-2

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

Only for training and service purposes

2-3

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

LGE Internal Use Only

2. PACKING ACCESSORY SECTION

834

CABLE, CIGAR JACK

806

PLUG ASS'Y(RCA CABLE)

835

808

CAR-MOUNT

BATTERY

833

ADAPTER

900

REMOTE CONTROL

802A

GIFT BOX

802

BOX

801

OWNER'S MANUAL

804

PACKING SHEET

803

PACKING

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

LCD PART ...................................................................................................................................................3-2

LCD ADJUSTMENTS ................................................................................................................................3-2

LCD ELECTRICAL TROUBLESHOOTING GUIDE .........................................................................3-3

BLOCK DIAGRAM......................................................................................................................................3-5

CIRCUIT DIAGRAM ...................................................................................................................................3-7

CIRCUIT VOLTAGE CHART ...................................................................................................................3-9

PRINTED CIRCUIT BOARD DIAGRAM............................................................................................3-10

MAIN PART ...............................................................................................................................................3-11

MAIN ELECTRICAL TROUBLESHOOTING GUIDE .....................................................................3-11

1. POWER (DC-DC CONVERTER) CIRCUIT..........................................................................................3-11

2. MPEG CIRCUIT ...................................................................................................................................3-14

3. SERVO CIRCUIT .................................................................................................................................3-15

4. CHARGING CIRCUIT ..........................................................................................................................3-17

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

1. WIRING CONNECTION DIAGRAMS-1 ...............................................................................................3-18

2. WIRING CONNECTION DIAGRAMS-2 ...............................................................................................3-19

3. WIRING CONNECTION DIAGRAMS-3 ...............................................................................................3-20

BLOCK DIAGRAMS.................................................................................................................................3-21

1. OVERALL BLOCK DIAGRAM..............................................................................................................3-21

2. POWER BLOCK DIAGRAM.................................................................................................................3-22

3. SERVO BLOCK DIAGRAM..................................................................................................................3-23

4. SYSTEM BLOCK DIAGRAM................................................................................................................3-24

5. AV BLOCK DIAGRAM ..........................................................................................................................3-25

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

1. POWER CIRCUIT DIAGRAM ..............................................................................................................3-27

2. AV CIRCUIT DIAGRAM........................................................................................................................3-29

3. CONNECTION CIRCUIT DIAGRAM....................................................................................................3-31

4. DC-DC CIRCUIT DIAGRAM ................................................................................................................3-33

5. MPEG CIRCUIT DIAGRAM .................................................................................................................3-35

6. SDRAM, FLASH & EEPROM CIRCUIT DIAGRAM .............................................................................3-37

CIRCUIT VOLTAGE CHART .................................................................................................................3-39

PRINTED CIRCUIT BOARD DIAGRAMS .........................................................................................3-43

1. MAIN P.C.BOARD ................................................................................................................................3-43

2. KEY P.C.BOARD ..................................................................................................................................3-47

3. USB P.C.BOARD..................................................................................................................................3-48

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

3-1

LGE Internal Use Only

LCD PART

LCD ADJUSTMENTS

1) Power measuring

Measure each power after power supply.

CE38(+): 15V, CE41(-): -10V, CE50(+): 5V, CE49(+): 7.5V, C84(+): 3.5V,

CE47(+): 3.3V

2) VCOM DC level adjustment

Adjust the VCOM DC level by adjust the VR2.Make sure that the VCOM DC

level is between +1.9V and +2.4V.

+2.15

GND

Vcom Waveform

LGE Internal Use Only

3-2

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

Only for training and service purposes

LCD ELECTRICAL TROUBLESHOOTING GUIDE

Appear shadow in

Display condition?

YES

black backgroud

NO

LED Backlight/Driver abnormal

Power supply normal?

YES

7.5V, 15V, -10V normal?

YES

+5V normal?

YES

RGB signal output?

YES

NO

NO

NO

NO

NO

Check main B/D and repairing

D16, D17, D18, D19 Check and Replace

IC(U9) Check and Replace

MTK1389P (Pin:184, 185, 187)

Check and Replace

IC(U8) Check and ReplaceVCOM signal?

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

3-3

LGE Internal Use Only

LCD ELECTRICAL TROUBLESHOOTING GUIDE

LCD TCON signal

normal? (ALL"LOW")

YES

TFT LCD normal?

YES

TFT LCD

Power supply voltage?

+15V, -10V, +5V

YES

Color normal?

YES

Each connector?

NO

NO

NO

NO

NO

Main B/D Check

Replace

Power source, D16, D17, D18, D19

Check and Replace

Check RGB AMP circuit

(Q29, Q30, Q31) and Replace

Replace and Reassemble

YES

NO

ReplaceEND

LGE Internal Use Only

3-4

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

Only for training and service purposes

•STVR

•STVL

•STHR

•STHL

LCD PANEL

•UND

•LNR

BLOCK DIAGRAM

•CPH1

•CPH2

•CPH3

•VCOM

•VGH

•VGL •89P_R

•CKV

•OEV

•OEH

•89P_G

•89P_B

•SP L+

SPEAK

•SP L-

•SP R +

•SP R -

BACKLIGHT

LCD POWER BLOCK

M

•VCO

VCOM BLOCK

•NJM3414A IC

•VG H (15V)

•5V

SS6608 IC

•

SSPT4105 IC

•PWRCTL_LCD

•BAT_OUT

•

•8V

•VG L ( - 1 0V)

LED DRIVERCIRCUIT

•BOUT

•GOUT

•ROUT

R/G/B AMP

Circuit

KEY

•K2

D

Connector

(Main interface)

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

•CKV

•STVL

•STVR

•3.3V

•UND

•OEV

•LNR

•OEH

•VCOMO

•PWRCTL_LCD

•STHR

•STHL

•CPH1

•89P_R

•89P_G

•SP_R+

•SP_R-

•SP_L+

•SP_L--

•LED_CTR

•K2

•IR

•89P_B

3-5

•BAT_OUT

•GND

•PW R C T L _L C

LGE Internal Use Only

MEMO

LGE Internal Use Only

3-6

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

Only for training and service purposes

CIRCUIT DIAGRAM

DC-DC

Friday, February 22, 2008

BAT_OUT

BAT_OUT

89P_R

OEH

STVL

89P_G

VCOMO

VCOM

VGL

BOUT

7VD5

CPH1

MCU 3.3V

VGL

VCOM

89P_G

CKV

MOD

STHR

3.3V

SP_L-

K2

89P_B

VGH

LNR

VGL

IR

ROUT

STHL

89P_B

UND

SP_L+

OEV

STHL

5VD

PWRCTL_LCD

GOUT

K2

89P_R

OEV

STHR

MCU 3.3V

3.3V

STVL

UND

IR

PWRCTL_LCD

CKV

OEH

STVR

CPH1

STVR

3.3VVCOMO

BOUT

VGH

ROUT

SP_R-

LED3.3V

GOUT

SP_R+

LNR

LED_CTR

3.3V

LED3.3V

AMP_VDD

5VD

5VD

V_BIAS

V_BIAS

V_BIAS

3.3V

BAT_OU

T

V_BIAS

3.3V

AMP_VDD

AMP_VDD

AMP_VDD

C67

0.1uF

+

CE47

22uF/16V

+

CE39

10uF/16V

U8

CSC3414AM
1
2
3
4 5

6

7

8

AOUT
AIN­AIN+
GND BIN+

BIN-

BOUT

VDD

C68

22pF

+

CE44

10uF/16V

R7

8K2/1%

R137

20

K

C99

10uF/16V

Q31

39

04

1

3 2

R8

1K

R6

13K/1%

+

CE48

10uF/25V

C61

0.1u

+

CE50

47uF/10V

R160

27

0

R10

NC

+

CE40

10uF/16V

R169

7.5K

R9
100

K

J6

CON26 AUO8.5'

26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1

+

CE45

10uF/16V

R168

1M

R139

100R

C59

0.1uF

C72

1uF

C62

1uF

R174

1K

J7

CON20

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

D21

LED

R136

15

K

C78

0.1uF

R186

7.5K

+

CE52

10uF/16V

R177

27

0

U9
SS9

969

2

31

GND

IN OUT

+

CE38

10uF/25V

R187

75

C58

0.1uF

D24

LED

C1

0.1uF

D18

DA204

C80

100pF

C2

OPEN

R151

10

0

R159

20K

L32

18uH

L38

22uH

R153

10

0

Q32
390

6

1

32

C79

100pF

+

CE53

10uF/16V

D13

OPEN

C71

1uF

+

CE49

10uF/20V

S18

NEX

T

S15

PAUSE

D19

SSD03

C101

100PF

C83

100pF

VR2 10

K

1 2

3

12

3

C50

1000pF

C74

0.1uF

+

CE56

10uF/16V

D17

DA204

L31

18uH

CE58

10uF/16V

R150

910

K

R178

910

K

D16

DA204

Q30

39

04

1

3 2

+

CE46

10uF/16V

R172

1K

L1

600R

+

CE35

10uF/16V

R152

1M

R182

3R 0805

R188

100

K

R170

75

R145

33R

Q1 SSP04

03S

1

23

L34

22uH

+

CE51

10uF/16V

L39

1.8uH

R141

20

0

R132

100R

D23

LED

C77

0.1uF

U10

SS66

08

2

3

1

5

4

GND

FB

SW

IN

EN

R4

1K2/1%

R184

1M

R142

0

C76

0.1uF

R3

1K5/1%

R220

4.7K

R140

0

R2

2K/1%

R134

33

K

R135

10R

L37

22uH

R1

3K/1%

R155

75

R191

10K

R143

NC

L35

1.8uH

+

CE55

10uF/16V

R133

10

K

+

CE42

10uF/25V

R181

3R 0805

R189

1K

C64

1uF

R220

10R

R157

10

K

R167

100

R149

27

0

R192

68

K

C66

1uF

C86

100pF

R138 10

K

C65

1uF

S16

PLAY

R148

20K

+

CE36

10uF/16V

R146

33R

+

CE37

10uF/16V

R180

3R 0805

D20

LED

L30

18uH

R179

3R 0805 C87

100pF

C81

100pF

IC2

IR RECEIVE

R

A

K

R154

7.5K

+

CE43

10uF/16V

Q29

39

04

1

3 2

R173

1K

C70

22pF

C69

22pF

Q33
39

04

1

3 2

CE57

10uF/16

L33

22uH

R218

10

R161

910

K

R171

1K

J9

CON18

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

U11 SSPT

4105
1
2
3
4 5

6

7

8

CE
NC
VIN
NC NC

LX

GND

FB

R190
10

K

C75

0.1uF

S17

PREVIOUS

D26 SS1

4

R185

10

K

C84

47/16V

D22

LED

+

CE54

10uF/16V

R5

0R

R183

100

C73

0.1uF

S14

STO

P

R156

51

K

R175

1K

J10

CON2 1.25

1
2

L36

1.8uH

R131

100R

+

CE41

10uF/25V

R176

20K

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

3-7 3-8

LGE Internal Use Only

CIRCUIT VOLTAGE CHART

PIN NO. STOP PLAY

CE39

+ 1.51 1.51

- -0.1 -0.1

CE40

+ 2.05 2.05

- 0.43 0.43

CE47

+ 3.23 3.23

-00

CE49

+ 7.99 7.99

-00

CE50

+ 5.02 5.02

-00

CE51

+ 3.24 3.24

- 2.58 2.58

CE52

+ 1.91 1.91

- 0.44 0.44

CE53

+ 3.28 3.28

- 2.59 2.59

CE54

+ 1.18 1.18

- 0.44 0.44

CE55

+ 3.26 3.26

- 2.59 2.59

CE56

+ 1.18 1.18

- 0.44 0.44

C84

+ 3.58 3.58

- 0.21 0.21

Q1

Emitter 3.3 3.3

Collector 0.01 0.01

Base 3.3 3.3

Q29

Emitter 0.5 0.5

Collector 3.24 3.24

Base 1.18 1.18

Q30

Emitter 0.49 0.49

Collector 3.27 3.27

Base 1.18 1.18

PIN NO. STOP PLAY

Q31

Emitter 0.49 0.49

Collector 3.26 3.26

Base 1.18 1.18

Q32

Emitter 1.01 1.01

Collector 1.02 1.02

Base 0.51 0.51

Q33

Emitter 0 0

Collector 0.04 0.04

Base 0.64 0.64

U8(NJM3414A)

1 0.42 0.42

200

300

4-11.59 -11.59

5 0.42 0.42

6 0.42 0.42

7 0.42 0.42

8 5.02 5.02

U9(SS9969)

188

200

3 5.02 5.02

U10(SS6608)

1 3.18 3.18

200

3 1.26 1.26

4 3.22 3.22

5 3.22 3.22

U11(SSPT4105)

1 1.02 1.02

2 4.98 4.98

3 4.98 4.98

4 4.98 4.98

5 3.63 3.63

6 3.63 3.63

7 0.2 0.2

8 0.2 0.2

PRINTED CIRCUIT BOARD DIAGRAM

(TOP VIEW)

(BOTTOM VIEW)

LGE Internal Use Only

3-9 3-10

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

Only for training and service purposes

MAIN PART

MAIN ELECTRICAL TROUBLESHOOTING GUIDE

1. POWER (DC-DC CONVERTER) CIRCUIT

A. POWER

No power on

by ADAPTOR

YES

Is ADAPTOR

out 9V

YES

Is F1 OK.

YES

A

A

NO

NO

Replace ADAPTOR

Replace F1

No power on

by BATTERY

YES

Is

BATTERY

OK?

YES

A

NO

Replace BATTERY

YES

YES

Is U4

3.3V OK?

NO

Replace U4

No +3.3V No +5V No LCD powerNo +1.8V

Replace U4

Replace

CON1 or CON2

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

3-11

LGE Internal Use Only

MAIN ELECTRICAL TROUBLESHOOTING GUIDE

B. AUDIO OUT ABNORMAL

Audio out abnormal

YES

Check Audio jack & mode

YES

Check +5V

YES

Check signals from MPEG

YES

Replace IC(U2)

C. VIDEO OUT ABNORMAL

Video out abnormal

YES

Check Video jack & mode

YES

Check Video signals from MPEG

YES

Check IC(U1)

D. AUDIO IN/SPEAKER ABNORMAL

Audio in/speaker

abnormal

YES

Check Audio jack &

mode S/W

YES

Is Q4

and Q6 OK.

YES

Is speakers OK.

Replace

YES

Replace IC(U3)

NO

NO

Replace

Q4 and Q6

Replace Speakers

E. VIDEO IN ABNORMAL

Video in abnormal

YES

Check Video jack

& mode

YES

NO

Is U1 OK.

YES

Check

R250, R251, C112

YES

Refer to LCD part

Replace (U1 IC)

LGE Internal Use Only

3-12

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

Only for training and service purposes

MAIN ELECTRICAL TROUBLESHOOTING GUIDE

F. PICTURE ABNORMAL

Picture abnormal

YES

Check the disc.

YES

Refer to SERVO part

YES

Check MPEG_CLK

signal of MPEG part

YES

Check MPEG (IC U9)

(If OK)

YES(If OK)

G. DISC ERROR

Disc error

Check Disc

Refer to SERVO part

YES

YES

YES(If OK)

H. OPEN/CLOSE ABNORMAL

OPEN/CLOSE abnormal

YES

Check SW1, SW2 switch

YES

Check IC(U9) Pin130

YES

Refer to SERVO part.

NO

Check the connectin of MD.

YES

Refer to SERVO part.

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

3-13

LGE Internal Use Only

MAIN ELECTRICAL TROUBLESHOOTING GUIDE

2. MPEG CIRCUIT

Power is on

Does Logo appear

on the screen?

YES

Does the

Video of the DVD Disc

play properly?

YES

Does the

Video of the video CD

play properly?

OPTION

If included VCD function.

NO

NO

YES

NO

Check power & clock.

YES

Is MPEG data

signal normal?

YES

Is error

signal normal?

Is MPEG data

signal normal?

NO

OK

NO

NO

Check CD/DVD DSP

output signal.

OK

Check MPEG Decoder

input signal.

Check CD/DVD DSP

output signal.

YES

Check MPEG Decoder

input signal.

Check CD/DVD DSP

output signal.

OK

Check MPEG Decoder

input signal.

the audio sound output

normally?

YES

LGE Internal Use Only

Does

END

NO

Is Clock normal?

YES

Does the audio

signal output from MPEG

decoder?

YES

3-14

NO

NO

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

Check clock signal

Check clock signal

Only for training and service purposes

MAIN ELECTRICAL TROUBLESHOOTING GUIDE

3. SERVO CIRCUIT

Focus on OK.

YES

Track on OK.

YES

NO

NO

Proper

signals on A, B, C, D

of MT1389P.

YES

Proper

FEO signal on

MT1389P.

YES

Check IC(U4)

Proper

FEO signal on

MT1389P.

YES

Properly

TRSO signal on

MT1389P.

YES

NO

NO

NO

NO

Check connections between
MT1389P and pick-up head.

Check the related circuit

on MT1389P FEO sugnal.

Check the related

circuit on MT1389P

Check the TRSO connection

on MT1389P and motor dirver.

Disc is play?

YES

B

NO

T+ & T-

output properly.

YES

Check cable connection

on pick-up head.

Check the tracking control

amp circuit on motor driver.

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

3-15

LGE Internal Use Only

MAIN ELECTRICAL TROUBLESHOOTING GUIDE

B

YES

Normal

Audio output when

disc playback.

YES

Normal

IR. VFD & Front pannel

key functions.

YES

NO

NO

Aout_L, Aout_R signal

Proper

on MT1389P

YES

Check Audio filter,

amplify, mute circuit.

Commu-

nications between

IR.VFD Front pannel key &

MT1389P & Front µ-com

is normally.

YES

NO

NO

NO

Check Aout_L related circuit

Aout_R

Check the related circuit of

Audio DAC.

Check communication

lines on MT1389P

TEST END

LGE Internal Use Only

NO

Check the cable connection

on Front pannel.

3-16

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

Only for training and service purposes

MAIN ELECTRICAL TROUBLESHOOTING GUIDE

4. CHARGING CIRCUIT

No turn on Red LED

YES

Is L27 OK?

YES

Is IC(U14) OK?

YES

Is Q29 OK?

YES

NO

NO

NO

NO

Is 8.4V of J9 RED Pin.

Replace L27.

Replace IC(U14).

Replace Q29.

Is U15 OK?

NO

Replace IC(U15).

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

3-17

LGE Internal Use Only

WIRING CONNECTION DIAGRAMS

1. WIRING CONNECTION DIAGRAMS-1

(MAIN PCB <---> LCD PCB)

LCD PCB

MAIN PCB

LGE Internal Use Only

3-18

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

Only for training and service purposes

2. WIRING CONNECTION DIAGRAMS-2

(MAIN PCB <---> USB PCB)

MAIN PCB

USB PCB

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

3-19

LGE Internal Use Only

3. WIRING CONNECTION DIAGRAMS-3

(MAIN PCB <---> KEY PCB)

KEY PCB

MAIN PCB

LGE Internal Use Only

3-20

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

Only for training and service purposes

BLOCK DIAGRAMS

1. OVERALL BLOCK DIAGRAM

K_IN

/AV_JAC

AV IN/OUT

VOLUME

SPK

H/P

COAXIAL

USB JACK

/-

SP_L/R-

SP_L/R+

A+5V

System & AV Part

4KBit

EEPROM

3.3V

64MBit

SDRAM

3.3V3.3V

,PWR#

FLASH

MEMORY

8/16/32MBit

3.3V/5V

LCD PANEL

SDA

SCL

DQ[0..15]

DCLK,DCKE
WE#,DQM[0..1]
CS#,CAS#,RAS#,
MA[0..11], BA[0..1],

AD[0..7]

PCE#,PRD#
A[0..21]

CKV,PWRCTL_LCD
OEH/V,LNR,UND,
STHL/R, STVL/R,
MOD,89P_R/G/B,
VCOMO,CPH1/2/3,

1.8V/3.3V

O

XI,X

A± 5V

TROPEN

RFO,MDI1/2

AOUT_L/R

NJM4580M

LIMIT

PT2303

A+5V

MUTE

OPO

SP_

MPEG

MT1389P

OP-,OP+

A_MUTE_SW

FSAV330

A+5V

IN

,USBM

ASPDIF

VIDEO_IO_CTL

CVBS

CVBS_

USBP

SDI

CH_SCS,

SCLK,

SDO

GT6319

/M_RESET

5VA

PWM

AD_T

AD_U

AD_PR

STANDBY

A-5V

TPS60400

A+5V

LED

RED,

GREEN

Power,

Charge

ER

IR

RECEIV

REMOCON

AD_K1,

AD_K2

KEY

AD_I

LDO1,LDO2,IOA,V20

27MHz

DISC

A,B,C,D,E,F,

UP

PICK

M

SLED

MOTOR

SPINDLE

MOTOR

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

5V

A+5V

LD_

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

1.8V

3.3V

DC-DC BLOCK2

3-21

CM1117

BAT_OUT

3904

4053

P+

DC_IN

P-

BATTERY

LGE Internal Use Only

2. POWER BLOCK DIAGRAM

BAT

(9V

Cha

na

Cha

rge

The

rmi

DC

se

BAT

Se

ns

5VA

3.3

1.8

3.

3V

TU/

-5V

Sta

ndb

Sta

ndb

ndb

5VA

3.3

1.8

-5V

3.3

7.5

15V

15V

-10

D5V

SW(

TU/

DV

D5V

5V

3.3

GT6

31

AM5898N

Charge

Discharge

LCD

Panel

Video

Audio

System

Servo

319

GT6

in)

SW (9V

BAT Con

Battery Charge Circuit

9V in

FET

rge

Cha

ble

rge Ena

Cha

ster

rmi

The

out

BAT

e
ns

Se

BAT

Divide Divide

7.5V

V

-10

15V

D5V

5VA

D5V

y

Standb

S/W

DC-DC

AM5898N

5VA

5V

DVB 5V

S/W

V

3.3

-5V

5V

-5V

D)
DV

TU/

SW(

Voltage Inverter

DC-DC

5VA

y

ndb

Sta

V

3.3

V

7.5

V

3.3

V

1.8

15V

-10V

Vcc

LCD

DC-DC

D5V

D5V

3V

DVB 3.

DVD)

SW( TU/

S/W

y

ndb

Sta

5V

V

1.8

V

3.3

Reg

LGE Internal Use Only

Sense

DC

AC/DC Adapter

3-22

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

Only for training and service purposes

3. SERVO BLOCK DIAGRAM

Spi

dle

Mo

Steppi

ng

AL

X501

27MHz

X-T

U9

MTK1389P

P-DVDPLAYER

ONE CHIP

FMSO,DMSO,FOSO,

,V1P4

TRSO,STBY

ALPC

U4

AM5898N

F,RF

DVD : A,B,C,D,RF

,

CD : A,B,C,D,E

TR+, TR-

FO+, FO-,

SL-,SL+

LIMIT

IOA

MDI1,MDI2

CDLD(LD01),DVDLD(LD02)

ng

PICK

UP

Moter

Steppi

Motor Driverv

SP-,SP+

ter

ndle

Mo

Spi

OPO

OP+,OP-

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

3-23

LGE Internal Use Only

4. SYSTEM BLOCK DIAGRAM

2^20*8= 8Mbit

2^21*8=16Mbit

2^22*8=32Mbit

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

4KBit

EEPROM

3.3V

System & AV Part

SDA

SCL

27MHz

FLASH

A0~A19,AA20,AA21

8/16/32MBit

AD0~AD7

MEMORY

3.3V

3.3V

PCE#,PRD#,PWR#

MPEG

64MBit

SDRAM

KEY1

CS#,CAS#,RAS#

MA0~MA11,DBA0/1

DQ0~DQ15

WE#,DQM0,DQM1

DCLK,DCKE

SDI

CH_SCS,

SCLK,

SDO

AD_K1

KEY2

LCD MODE,DISPLAY,SETUP,MENU

UP,DOWN,LEFT,RIGHT,LCD-OPEN

AD_K2

GT6319

POWER,COLOR/BRIGHT, MODE, ENTER

RED,

GREEN

Power,

Charge LED

MT1389P

/M_RESET

5VA

LGE Internal Use Only

1.8V/3.3V

USB JACK

A+5V

USBP,USBM

3-24

IR

RECEIVER

REMOCON

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

Only for training and service purposes

5. AV BLOCK DIAGRAM

±

AV OUT PATH

AV IN PATH

System & AV Part

A+5V

VIDEO

FSAV330

AUDIO

< AV IN/OUT >

SP_L+/L-

A+5V

SPK

SP_R+/R-

PT2303

VOLUME

SPK

H/P JACK

SP_L-/R-

CVBS_IN

/AV_JACK_IN

1.8V/3.3V

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

CVBS

VIDEO ADC

VIDEO_IO_CTL

5V

A±

NJM4580M

AOUT_L/R

2CH DAC

3-25

OP-AMP

A_MUTE_SW

SP_MUTE

MPEG

MT1389P

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

Monday, March 03, 2008

LG

VER:4.0

100R-->1K

R134

/M_RESET

AD_U
AD_I
AD_T
AD_K1

IR

STANDBY

MSDI
MSDO
MCLK

VREF

AD_PR
AD_K2

AD_TVREF

K2

K1

5VA

AD_K1
AD_K2

MCSCH_SCS MCLKSCLK

MSDISDO SDI MSDO

/M_RESET
CH_SCS

K2

PWM

IR

SDI
5VA

BAT_9V

SCLK
SDO

AD_U

GND

AD_PR

P+

P+

AD_I

5V

MCU_MUTE

A_MUTE_SW

MCS
PWM

MCU_MUTE

P+

STANDBY

P-

P+

5V

A

GND

1,2,3,5,6

SDI

5

A_MUTE_SW 1,

5

IR

2,5

CH_SCS

5

BAT_9V

1,2,3

5VA

3

SDO

5

/M_RESET

5

K2

1,2

SCLK

5

5V

1,2,3

MCU_MUTE

3

5V

5V

5V

5V

5V

5V 5V

5V

BAT_OUT

BAT_OUT

5V

A

BAT_9V

BAT_OUT

L43 N

C

U15
HT7150-

1

231

vin

vout

GND

R141 1K

Q32

390

6

1

23

R56 51R

R149

51

K

+

CE34

NC

U14

GT6319

3

11
12

14

5

4

19

9

25

23

24

28

8

6
7

10

13

21

22

20

27
26

2

1

18
17
16
15

CMSDA

AD_BATU
AD_CHG1

AD_K1

NC2

CMCLK

VCC

RST

MSDO

PIE

MCLK

IR_DA

PR_CTL

MCS
PWM

GND

AD_BATT

PRCTL2

VREF

OSC

NC1

MSCI

GRN

RED

NC4
NC3

AD_PR

AD_K2

D11

SK3

4

2 1

C112

0.1uF

R114

10

K

C60

10

4

R131

1K

Q34

390

4

1

2 3

R112 2K

D12

SK34

2 1

NTC1

10

K

C58

0.1uF

R123

10

K

Q24
SSPT0403

1

32

R124

1K

C63

0.1uF

F1

FUSE

R129 10

K

R143

20

K

C64

0.1uF

J10

2PIN/2M

M

1

2

C72
100pF

C68

0.1uF

D8
1N4148

1 2

J6

3PIN/1.25

2

1

3

K2

K1

GND

R196

NC

R113

10

K

Q23
390

4

1

2 3

R109

10

K

R142

100

K

R138

39

K

R1331

K

R117
10R

R93 20

K

CE14

100uF/10V

C65

0.1uF

R53

120

K

C71

0.1uF

R132

9.53K 1%

T1

10M

H

1 2
34

12
34

R135
1K

C46

0.1uF

R92
20

K

C81

0.1uF

C110

0.1uF

R121

150K1

%

D16

LL414

8

C69

0.1uF

R136
NC/4.7M

D10

SK3

4

2 1

R118

10

K

R137

10K 1%

D9

NC/SK34

2 1

IC1

KA431 1

%

C75

0.1uF

R63

10K 1%

C57

0.1uF

R134 1

K

R115
2K

R144

0.1R1/4W

R58 1K

J9

3PIN/2.54MM

2

1

3

R64

10K 1%

Q29A

495

3

127

8

R119

2K

Q30
390

4

1

2 3

R126

51K1

%

J5

DC_JACK

1

2

POWER

GND

R147

1K

C66

0.1uF

QB1

992

6

123

45

678

C73
100pF

R116

120

K

R61 1

K

C67

0.1uF

C61
100pF

R122

*

R120

2K

R110

10

K

D13

LED-G&R

R139

2K

R145

0.1R1/4W

D14

PG05GBUSC

U6

S-8242AAD-M6TZG

Z

3

5

4

2 6

1

VM

VCC

VC

CO VSS

DO

R140

1K

C45

0.1uF

R127

*

R11120

K

C70

0.1uF

R125

3.6K

C111

0.1uF

C59

10

4

+

CE35

100uF/25V

D15

PG05GBUSC

R146

4.7K

+

CE36

220uF/16V

C74
100pF

L27

47uH

R91

5.1K

R130

20

K

R128 10

K

Q29B
495

3

3

4

5

6

1. POWER 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. AV CIRCUIT DIAGRAM

AV

Monday, March 03, 2008

L:AV OUT
H:AV IN

H:AV IN

L:AV OUT

CVBS

OFF-PAGE CONNECTION

POWER I/F

MPEG I/F

LCD I/F

VER:3.0

AOUTL

CVBS

CVBS_IN

VIDEO_IO_CTL

CVBS_OUT

CVBS_OUT

AV+5V

AOUT_L

AOUT_R

AV-5V

AMP+5V

AV-5V

AMP+5V

L_SPEAKER

AOUTL

A_MUTE

A_MUTE

R_SPEAKER

AOUTR

AOUTR

MUTE

A_MUTE

AV+5V

VIDEO_IO_CTL

SP_L-

SP_R-

SP_R-

SP_R+SP_L+

GND

HP-IN

AAR

A_MUTE

R_SPEAKER

L_SPEAKER

AAR

A_MUTE

SP_R-

A_MUTE

ASPDIF

SP_L-

5VA
A+5V

A-5V

CVBS

AOUT_L
AOUT_R
ASPDIF
A_MUTE_SW

VIDEO_IO_CTL

SP_L­SP_L+
SP_R­SP_R+

CVBS_IN

SP_L-

A_MUTE

3.3V

GND

A_MUTE_SW

SP_MUTE

HP-IN

MCU_MUTE

5V

BAT_9V

MCU_MUTE

AMP+5V

AV-5V

SP_MUTE

AAL

AA

L

5VA

3,4

A+5V

3,5

A-5V

3

CVBS 5

AOUT_L

5

AOUT_R

5

ASPDIF

5

A_MUTE_SW

4,5

GND

2,3,4,5,6

VIDEO_IO_CTL

5

CVBS_IN

5

SP_L-

2

SP_L+

2

SP_R-

2

SP_R+

2

3.3V

2,3,5,6

5V

3,4

BAT_9V

2,3,4

MCU_MUTE

4,5

SP_MUTE

3

A+

5V

A+

5V

A+

5V

A+5V

A+

5V

AV+5

V

A-5V

3.3V

BAT

_9V

5V

5V

A+

5V

Q17

NC/3906

1

2 3

+

CE12

10uF/16V

C19
680pF

R14

10

K

Q2

390

4

1

2 3

+

CE9

NC

R21

NC

R20 10K

R57
NC/1K

R22

1.2K

Q19

NC/3906

1

2 3

+

CE3

10uF/16V

R49

4.7K

C1

100pF

R160

1K

R52

100R

+

CE17

NC/100uF/16V

D1

BAT

54S

3

1

2

C20 100pF

+

CE6

10uF/16V

C14

680PF

R12

10

0K

R62

NC /10K

C26
3300pF

R8
100

K

R27
47

K

R39

100R

Q4

390

4

1

2 3

+

CE10

22uF/16V

R59

NC/0R

Q7 390

6

1

2 3

C23
56pF

C22
1000pF

R55

4.7K

R95

4.7K

R25

NC/4.7K

C10

100pF

+

CE15

100uF/10V

R96

1K

R6

100

K

R24 27

K

R29

10

K

R37

100R

L9

600ohmFB

R1

4.7K

+

CE8

10uF/16V

R60

NC/47K

R31 10

K

R26 10

K

R54

1K

Q33

390

4

1

2 3

Q13

3904

1

2 3

R34

4.7K

R41

1K

R16

47

K

+

-

U2B

NJM458

0M

5

6

7

8 4

C12

0.1uF

R7

100R

C15
NC

R32

100R

C18
680pF

3300pf

2

4

1

3

5

J1

AV_JACK

3
1
4
2

5

Q5
NC/2N3906

1

23

R23

0R

R18

10

K

R38

100R

R36 100R

R35

1K

Q9

390

4

1

2 3

C7
ESD(15pF)

R9

0R

PH1

JACK4

11

9

10

86

1

2

3

457

R17 100R

R30

5.1K

+

CE13

10uF/16V

R19

4.7K

R15

5.1K

C11

0.1uF

+

CE7

NC/10uF/16V

R42

0R

C25

3300pF

L3

FB

L7

600ohmFB

R3

68R1%

C13

0.1uF

+

CE16

100uF/10V

C6

0.1UF

PH2

JACK4

11

9

10

86

1

2

3

457

+

CE1 10uF/16V

Q3

39

04

1

2 3

R2

10R(NC)

C16
1000pF

Q11

390

4

1

2 3

D2

BAT54S(NC)

3

1

2

R46

4.7K

R28

10K

R13 10

K

C21
NC

R65

NC/10K

L1

1.8uH

R43

10K

L2

FB

C28
3300pF

C27

3300pF

C5
100pF

L5

FB 120 ohm

L4

FB 120 ohm

C8

0.1uF

Q10

390

4

1

2 3

U3

PT2303

1
2
3
4
5
6
7
8

16
15
14
13
12
11
10
9

SHUT
GND
+OUT1
VDD

-OUT1

-IN1
GND
+IN1

HP-IN

GND

+OUT2

VDD

-OUT2

-IN2

VREF

+IN2

C2
ESD(15pF)

L8

600ohmFB

R48

10

K

+

CE11

10uF/16V

L6

600ohmFB

C4
100pF

R51

220R

Q6

390

4

1

2 3

Q1

390

4

1

2 3

R45

4.7K

C3
56pF

U1

FSAV330

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

S

1B1

1B2

1A

2B1

2B2

2A

GND

VCC

OE

4B1

4B2

4A

3B1

3B2

3A

+

-

U2A

NJM458

0M

3

2

1

8 4

+

CE21

NC/10uF/16V

Q14

390

4

1

2 3

R33

4.7K

R10 27

K

R5 150R

D3

NC/3.3V

1 2

+

CE4

220UF/6.3V

+

CE5

10uF/16V

C17
56pF

R4

4.7K

+

CE2 10uF/16V

R40
0R

C9
330pF

R11

10R(NC)

VR1

VOLUM

E

1
2
3
4
5

1
2
3
4
5

6

7

Q8
39

06

1

23

C24
680pF

3300pf

2

3

J2

COAXIAL_JACK

3

1

2

R44

10

K

R47

10

K

R50

100R

LGE Internal Use Only

3-29 3-30

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

Only for training and service purposes

3. CONNECTION CIRCUIT DIAGRAM

CONNECTION

Monday, March 03, 2008

OFF-PAGE CONNECTION

PANEL T-CON I/F

SP_L-

SP_L+

SP_R­SP_R+

GND
STVR

STVL
CKV

UND
OEV

LNR
OEH

STHL
STHR

CPH1
VCOMO

BAT_9V

PWRCTL_LCD

89P_R
89P_G
89P_B

K2

3.3V

PWRCTL_LCD

VCOMO
OEH

LNR
OEV
UND
CKV
STVL
STVR

5V
IR

3.3V

3.3V

SP_L+
SP_L-

SP_R+
SP_R-

STHL
STHR

CPH

89P_R
89P_B
89P_G

CPH1

BL_POWER

K2

STHL STHR CPH STVR CKV STVL OEV OEH VCOMO

89P_R 89P_B 89P_G

5V

IR

LNR UND

LED_CTR

LED_CTR

BAT_9V

5VA

5VA

3.3V

1,3,5,6

SP_L-

1

SP_L+

1

SP_R-

1

SP_R+

1

STVR

5

STVL

5

CKV

5

UND

5

OEV

5

LNR

5

OEH

5

STHL

5

STHR

5

CPH1

5

VCOMO

5

BAT_9V

1,3,4

PWRCTL_LCD

5

89P_R

5

89P_G

5

89P_B

5

GND

1,3,4,5,6

K2

1,4,5

5V

1,2,3

IR

4,5

LED_CTR

2

5VA

4,5

C47
100PF

C124
100PF

C122
220PF

C128
100PF

CON1

20pin/0.8mm

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

C123
100PF

C127
100PF

CON2

18pin/0.8mm

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18

C54
100PF

C121
100PF

C126
100PF

L10

300 Ohm FB

L15

100Ohm FB

C62
100PF

C52
100PF

C125
100PF

C129
100PF

C114
100PF

L16 N

C

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

3-31 3-32

LGE Internal Use Only

4. DC-DC CIRCUIT DIAGRAM

DC-DC

Monday, March 03, 2008

S

G

D

13

2

CSM2307

SERVO I/FSERVO I/F

OFF-PAGE CONNECTION

GND

DM-520 SPINDLE MOTOR

1 SL+

2 SL-

DM-520 SLED MOTOR

1
2
3
4

SP-

LIMIT

SP+

C

VCC

PD_CD

T-

NC

20

23

17

1200X

F+

VR-DVD

3

NC

19

2

1

1200X

15

B/b

F-

T+

18

B

E

16

GND-PD

CD/DVD SW

C/c

4

GND-LD

D/d

HFM

DVD-LD

13

22

1

10
11

21

24

3

C

F

RF

MD

7

E

2SB1132

Very Important to
reduce Noise

12

Vcc

8

Vc(Vref)

2

A/a

VR-CD

6

9

5

C

14

CD-LD

3

LD_CD
VR

20

18

PD_DVD

16

D
F

12

24

1

8

F-

GND

HITACHI HOP1200

9

B

21

5

10

VR

LD_DVD

15

7

T+

23

A

13

E

22

VCC

T-

19

Vs
GND

F+

VRF

11

GND

GND

17

2

6

14

4

3

2

TPS60400

4

51

F+
F-

FOSO

DMSO

SP+
SP-

T+

TRSO
FMSO

SL­SL+

T-

V1P4
STBY

CT1

5VA

A-5V

A+5V

3.3V

BAT_9V

V20

V1P4

STBY

FOSO

TRSO

DMSO

FMSO

OP+

OP-

OPO

LIMIT

TROPEN

LDO2_TO_USB

IOA

LDO1

D

A

B

C

MDI1

E

F

RFO

TROPEN

CT1

SP-

LIMIT

OPO

SP+

OP-

SL+

SL-

OP+

GND

GND

V1P4

T-

MDI1

IOA

T+

GND

LD-CD

F-

RFO

C

MDI1

LD-DVD

V20
GND

D

AVCC1

VR_DVD

AVCC1

LDO1

E

A

F

VR_CD

B

F+

LDO2_TO_USB

IOA

5V

A

5VA

4

A-5V

1

A+5V

1,5

3.3V

1,2,5,6

GND

1,2,4,5,6

BAT_9V

1,2,4

V20

5

V1P4

5

STBY

5

TRSO

5

DMSO

5

FOSO

5

FMSO

5

OP+

5

OP-

5

OPO

5

LIMIT

5

TROPEN

5

LDO1

5

LDO2_TO_USB

5

IOA

5

A5

B5

C5

D5

E5

F5

RFO

5

MDI1

5

GND

1,2,4,5,6

5VA

4,5

BAT_9

V

BAT_9V

3.3V

BAT_9V M5V

M5V

BAT_9V

BAT_9V

BAT_9V

5VA

M5V

S3.3V

M5V

S3.3V

S3.3V

VCC

VCC

VCC

M5V

A+

5V

A+

5V A-5V

S3.3V

DV33

5V

A

S3.3V

L26

10uH

C56

2200pF

R152
51

K

CE22

47uF/6.3V

R154

10k

R88

0R

+

CE28

10uF/16V

L18 F

B

D6

PG05GBUSC

+

CE18

220uF/10V

R158

100k

R67 10

K

TP7

R69 10

K

C53

0.1uF/NC

C36

0.1uF

R103

10K/NC

R98

NC

R153

6.8K

L13

47uH

L11

FB(1206)

Q28
2SB

1132

1

32

R107

10

K

CB5

10

2

J3

2PIN2

1

2

1

2

R84

0.1R/1%

R80 10

K

R79

3.6K1%

C51

1uF

R83

15R

CE23

47uF/6.3V

C55

2200pF

C49

0.1uF

R108

1R

C42

0.1uF

C31

68pF

R157

0

R86

0R

L25

10uH

CB2

0.1uF

+

CE31

47uF/6.3V

R81 680

K

L24

10uH

TOP

con3

HEADER 24 SMD0.5 TOP

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

L20 FB

Q21

CSM

2307

1

3 2

R77 15R

R99

4.7

Q31
2N3904

1

3 2

L14 FB(1206)

C35

1000pF

TP6

C37

0.1uF

R105

680

K

Q12
390

6

1

23

R66 20K

R71 2K1

%

U5

TPS60400

4

1

5

3

2

GND

OUT

CFLY+

CFLY-

IN

R106

NC

J4

4PIN2

4
3
2
1

4
3
2
1

R78

100R

C38

0.1uF/NC

D5

SS1

4

2 1

R68 20K

CB49 10

2

Q27
3906/NC

1

2 3

Q20

CSM230

7

1

32

L21 FB

Q26
3906/NC

1

2 3

R156

0

C34

0.1uF

C40

0.1uF

C32

68pF

R85

750R

+

CE27
100uF/10v

C30

0.1uF

R76 680

K

R159

10k

R155

100k

R82

0.1R/1%

L23

10uH

+

CE29

10uF/16V

R100

4.7

R102

150

K

R104

10K/NC

C48

0.1uF

L22

FB

R73

750R

CE25

47uF/6.3V

Q15

390

4

1

2 3

U4

AM5

898N

3

11
12

14

5

4

19

9

16

15

25

23

24

28

31

8

6
7

32

10

13

21

22

20

27
26

29

30

17

2

1

18

33

34

3635

COMP2

VINFC
VINSL+

VOSL+

IPK2

SW2

GND

VOFC-

GND

VOSL-

PGND

VINTK

VCC2

IPK1

CT1

VOFC+

PVCC1
PVCC2

EN1

VCC1

GND

VOSP-

VINSP

VOSP+

PGND2
PGND1

SW1

COMP1

VOTK+

CT2

EN2

VOTK-

MUTE

BAIS

GND

GND

R94 10

K

Q25
2SB

1132

1

3 2

C33

0.1uF

R72

0R

C29

1000pF

D4

SS1

4

2 1

R74 10K

R101

150

K

C39

0.1uF

Q18
2SK301

8

1

32

R87 10K

CE32

100uF/10V/NC

R70

1.2K1%

CB1

0.1uF

+

CE20

220uF/10V

+

CE30
220uF/6.3V

L12

47uH

TP5

R97

47

K

R151
27

K

Q16
2SK301

8

1

32

C41

0.1uF

R75

1.2K1%

CE26

47uF/6.3V

CB48
10

2

CE33

100uF/10V/NC

C50

0.1uF

+

CE19

100uF/25V

BAT_9V

LGE Internal Use Only

3-33 3-34

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

Only for training and service purposes

5. MPEG CIRCUIT DIAGRAM

Monday, March 03, 2008

1389P MPEG

VIDEO IN

Crystal

Chip Decopling CAP.

IIC I/F

SERVO I/F

PANEL I/F

AV I/F

POWER I/F

CHARGE & FM-TX I/F

FLASH I/F

MEMORY I/F

123

4

CM1117SCM223

VER:4.1 MODIFY GPIO

A

C
B

VIDEO_IO_CTL

AD1

RFVDD3

RAS#

A20

AD5

A15

DCKE
DCLK

AD7

MA3

A16A6A14

AD6

CS#

DQ7

DQ14

A4

A13

A8

PRD#

A9

CAS#

BA0

MA7

PCE#

A19

A18

A7

A5

AD3

A10

DQM1

MA2

A11

BA1A2

MA10

A1

AD4

WE#

MA0

MA1

PWR#

A17

AD0

A12

A0

AD2

A3

SDO

TXD

RXD

SDA

SCL

DQM0

DQ5

DQ6

DQ4

DQ3

DQ2

DQ1

DQ0

DQ15

DQ10

DQ12

DQ8

DQ9

MA8

MA11

MA9

MA4

CKV

STVL

DQ11

DACVDD3

CVBS

89P_G

89P_B

LED_CTR

CVBS_INP

V1P4

RFVDD3

RFVDD3

PLLVDD3

AVDD18_VPLL

A
D

B

C

SUBA
SUBB
E
F

V1P4

V2P8
V20

OP­OP+

FMO

DMO

OPO

TRO
FOO

USBP

FG

DACVDD3

JITFOXOJITFN

RFV18

ADACVDD

AOUT_L

AOUT_R

APLLVDD3

ASPDIF

VCOMO

DACVDD3

89P_R89P_R

XI

PLLVDD3

USBM

DQ13

MA6

MA5

OEH

OEV

STHL

CPH1

JITFNJITFO

D

TRO

FOO

DMSODMSODMSODMSODMSODMSO

FMO
DMO

FMSOFMSOFMSOFMSO

RXD
TxD

RFVDD3

V1P4

FOSOFOSOFOSOFOSOFOSOFOSO
TRSOTRSOTRSOTRSOTRSOTRSO

TROPEN

RFV33

89P_3V3

LDO2
LDO1

LIMIT

STBY

STVR

UND

LNR

STHR

XO XI

APLLVDD3

DACVDD3

ADACVDD

CVBS_INP CVBS_IN

VCOMO
CPH1

STHR

STHL

OEH
OEV
STVL

UND

LNR

CKV

CVBS

89P_R

PWRCTL_LCD

89P_B

AOUT_L

CVBS_IN

89P_G

ASPDIF

AOUT_R

A_MUTE_SW

VIDEO_IO_CTL

A+5V

3.3V

/M_RESET

CH_SCS

SDI

SDO

SCLK

PCE#

PRD#
PWR#

AD[0..7]

CAS#

DCKE

WE#
CS#

RAS#

A[0..20]

MA[0..11]

BA[0..1]

DQM[0..1]

DQ[0..15]

SDA

SCL

V20

V1P4

OPO
OP­OP+
LIMIT
IOA
LDO1

LDO2_TO_USB
A

C

B

D

RFO
MDI1

STBY
TRSO
DMSO

FMSO

FOSO

TROPEN

V2P8 V20 V1P4

RFV18

AVDD18_VPLL

IOAFG

STVR

DCLK

F

RFO

E

LDO2_TO_USB

LDO2

TROPEN

USBM

A+5V
USBP

GND

IR

IR

/M_RESET

5VA

SDI

SCLK

CH_SCS

A_MUTE_SW

MDI1

PWRCTL_LCD

SY_MUTE

LED_CTR

SP_MUTE

SP_MUTE

AD[0..7]

6

A[0..20]

6

MA[0..11]

6

BA[0..1]

6

DQM[0..1]

6

DQ[0..15]

6

VCOMO

2

CPH1

2

STHL

2

STHR

2

OEH

2

OEV

2

STVL

2

LNR

2

STVR

2

UND

2

CKV

2

89P_R

2

89P_G

2

89P_B

2

PWRCTL_LCD

2

CVBS

1

CVBS_IN

1

AOUT_L

1

AOUT_R

1

ASPDIF

1

A_MUTE_SW

1,4

VIDEO_IO_CTL

1

GND

1,2,3,4,6

A+5V

1,3

3.3V

1,2,3,6

/M_RESET

4

CH_SCS

4

SCLK

4

SDO

4

SDI

4

PRD#

6

PWR#

6

PCE#

6

DCLK

6

DCKE

6

CAS#

6

RAS#

6

WE#

6

CS#

6

SCL

6

SDA

6

V1P4

3

V20

3

OPO

3

OP-

3

OP+

3

LIMIT

3

IOA

3

LDO1

3

LDO2_TO_USB

3
A3
B3
C3
D3
E3
F3
RFO

3

MDI1

3

STBY

3

TRSO

3

DMSO

3

FOSO

3

FMSO

3

TROPEN

3

GND

1,2,3,4,6

IR

2,4

5VA

3

LED_CTR

2

SP_MUTE

3

89P_3V3

1.8V

1.8V

89P_3V3

1.8V

1.8V

89P_3V3

1.8V

89P_3V3

89P_3V3

89P_3V3

89P_3V3

1.8v

89P_3V3

RFV33

89P_3V3

89P_3V3

1.8V

3.3V

3.3V

1.8V

3.3V

1.8V

Y1

27MHz

+

CE50

100uF/6.3v

C101

4.7uF

C76

0.01uF

TP29

TP26

CB22

0.1uF

+

CE44

47uF/6.3v

CB31

0.1uF

R180

2.2K

CB21

0.1uF

R174

0R

C84 0.1uF

L34 FB

C102

0.1uF

+

CE48

100uF/10V

R173

560R1%

C107

0.015uF

L40

FB

TP17

TP30

L37

FB

CB9

0.1uF

TP1

2

CB25

0.1uF

CB8 0.1uF

TP33

C89 0.047uF

TP18

R182

47K

R166

750k

C103
1uF

C109
33pF

C90 0.047uF

C96 1uF

CB13

0.1uF

+

CE37

100uF/6.3v

TP32

CB26

0.1uF

R176

2K

R185

100K

+

CE43

47uF/6.3v

R177

0R

R169 100k

TP23

CB18

0.1uF

TP22

L39

FB

+

CE49

100uF/6.3v

R171 15k

TP19

C93

1uF

+

CE45

10uF/10V

CB16

0.1uF

L35

FB

CB10 0.1uF

L33 F

B

R179 5.1K

CB32

0.1uF

CB20

0.1uF

C78

1000pF

C108

33pF

C83 4.7uF

CB3

330pF

C92

1uF

CB36

0.1uF

C80

20pF

CB23

0.1uF

CB34

0.1uF

TP31

TP20

CB24

0.1uF

CB15

0.1uF

L28

FB

R184

10K

CB12

0.1uF

+

CE42

47uF/6.3v

R183

15K

R172 100k

U10

CM1117-1.8V

3

1

2

4

IN

GND

OUT

TAB

R164

0R

TP25

+

CE38

10uF/16v

CB27

0.1uF

L32
FB

TP14

TP1

3

L36

FB

CB11

0.1uF

R165

18R

C94

1uF

C77

2200pF

CB17

0.1uF

CB6

0.1uF

C106

0.01uF

C91

0.1uF

C87 0

.1uF

CB30

0.1uF

C99

0.1uF

TP21

L31

FB

+

CE41 10uF/10V

R148
470R

C98

0.1uF

C105

330pF

CB7 0.1uF

CB37

0.1uF

C85 4.7uF

R167 6.8R

R168

56R

CB14

0.1uF

C100

4.7uF

TP15

C95

1uF

R181

47K

C97

120pF/NC

C104

330pF

CB28

0.1uF

CB4

0.1uF

+

CE46

10uF/10V

C79

0.047uF

+

CE39 100uF/6.3v

CB33

0.1uF

C113

3300pF

L29

10uH

TP11

TP28

J7

7*1.25mm

3
2
1

4

5

6

7

3
2
1

4

5

6

7

C86 1500pF

L30 10uH

L38

FB

C82

1000pF

TP16

+

CE40 220uF/6.3V

CB19

0.1uF

CB35

0.1uF

C88 0.033uF

J8

4PIN/2

1
2
3
4

CB29

0.1uF

Pin Assignment v1.0

MT1389P

U9

MT1389P

2

250

3
4
5

1

252

253

6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23

256

28

27

30

29

32

31

43

26

25

33
34
35
36

42

41

45

39
40

46

38

37

59

75747271706968

52

91

62
63

87

86

64

65

848382

81

73

93

53
54
55
56

80

57
58

67

92

85

60
61

76

7890796677

949596979899100

101

102

103

104

105

116

106

107

244

245

108

109

110

111

112

122

113

114

115

117

118

120

119

121

123

124

125

126

128

127

129

192
191
190
189
188
187
186
185
184
183
182
181
180
179
178
177
176
175
174
173
172
171
170
169

167

168

166
165
164
163
162
161
160
159
158

156

157

155
154
153
152
151
150

148

149

147
146
145
144
143

141

142

140
139
138
137
136

134

135

133
132
131
130

249

25524254

231

230

238

237

248

247

236

251

246

243

241

242

240

239

234

235

232

224

225

222

221

220

219

226

218

217

215

213

214

204

211

210

209

208

212

207

206

205

203

202

201

200

199

198

197

196

195

194

193

233

44

47
48
49
50
51

88

89

216

223

228

229

227

DVDA

CRTPLP

DVDB
DVDC
DVDD

AGND

OSP

OSN

DVDRFIP
MA
MB
MC
MD
SA
SB
SC / TNI
SD / TPI
MDI1
MDI2
LDO2
LDO1
SVDD3
CSO/RFOP
RFLVL / RFON
SGND
V2REFO

AVDD3

TEZISLV

TEO

OP_INN

OP_OUT

DMO

OP_INP

VSS33_USB

FEO

VREFO

FMO
TROPENPWM
PWMOUT1 / V_ADIN0
TRO

VDD33_USB

USB_DM

VDD18_USB

AVDD33_DMPLL
USB_DP

VSS18_USB

AGND33_DMPLL

FOO

IOA5

IOA20

HIGHA1

HIGHA3

HIGHA4

HIGHA5

HIGHA6

HIGHA7

DVSS33

A17

HIGHA0
IOA18

IOA21 / GPIO17

AD6

IOA19

DVDD33

AD4

AD3

AD2

DVSS18

HIGHA2

DVDD18

DVSS18
IOA22 / GPIO18
DVDD18
IOA2

AD1

IOA3
IOA4

A16

IOA0

AD5

IOA6
IOA7

IOCS#

IOOE#

DVSS33

AD0

IOWR#

IOA1

UWR#

URD#

DVDD33

UP1_2 / GPIO19

UP1_3 / VSCK

UP1_4 / VSTB

UP1_5 / VSDA

UP1_6 / SCL

UP1_7 / SDA

UP3_0

UP3_1

UP3_4 / RXD

RD4

UP3_5 / TXD

ICE

ADCVDD3

ADCVSS

PRST#IRGPIO22 / SD_DATA0 / INT0#

DQM0

GPIO21 / SD_CLK

RD15

RD7

RD6

RD5

RD3

DVDD33

RD1

RD2

RD0

RD14

RD13

RD12

RD11

RD9

RD10

RD8

DACVSSC

CVBS(Y)
DACVDDB
DACVSSB
DACVDDA

G

DACVSSA

B
R

HCK
HSTR
HSTL

HOE

LR

DVSS18

VOE

UD

VCK

DVDD18

VSTU
VSTD

GPIO100
DVDD33
GPIO101

GPIO103

GPIO102

SD_D3
SD_D2
SD_D1
MS_D3
MS_D2

MS_D1
DVDD18
MS_CLK

MS_BS

DVDD33

MS_D0

RA4
RA5
RA6
RA7
RA8
RA9

DVSS33

RA11

CKE

RCLK

DVDD33

RA3
RA2

RA1

DVDD18

RA0

RA10

BA1
BA0

RCS#

CAS#

RAS#

RWE#
DQM1

DVDD33

GPIO20 / SD_CMD

HRFZC

IREF

V20

RFGC

ADACVDD1

ADACVDD2

PLLVSS

JITFN

RFRPAC

RFRPDC

JITFO

RFGND

RFVDD3

LPFOP

LPFIP

LPFIN

LPFON

PLLVDD3

XTALO

XTALI

RFGND18

APLLVSS

ADACVSS2

APLLVDD

AVDD18_VPLL

VPLL_TST

AGND18_VPLL

ADACVSS1

VFE_TSTP / AUDIO_IN1

VFE_TSTN / AUDIO_IN2

CVBS_INP

CVBS_INN / BATTERY

AVDD33_VFE

GPIO10 (ASDATA3)

AGND_ADC

DVDD33_ADC

DGND_ADC

SPDIF / GPIO23

AVDD33_ADC

GGPIO12 (MCDATA)

GPIO11 (ASDATA4)

DVDD18

GPIO9 (ACLK)

GPIO8 (ABCK)

GPIO7 (ALRCK)

DVDD33

GPIO6 (ASDATA2)

GPIO5 (ASDATA1)

GPIO4 (ASDATA0)

VCOM / GPIO3

DACVDDC

VREF

FS

RFVDD18

PAD_VRT

USB_XTALO / GPIO15
USB_XTALI / GPIO14
DVDD33
DVDD18
FG / GPIO16

ALE

AD7

AGND_VFE

APLLCAP

AVCM

AL / SDATA2 / GPIO1

AR / SDATA0 / GPIO

0

TP27

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

3-35 3-36

LGE Internal Use Only

6. SDRAM, FLASH & EEPROM CIRCUIT DIAGRAM

SDRAM & FLASH & EEPROM

Friday, January 18, 2008

NORMAL:16MBit

DRAM I/F

FLASH I/F

IIC

POWER I/F

SDRAM

1.HYNIX :HY57V641620ETP-7-C

2.

3.

FLASH Memory

-Normal model(16.MBit)

1.KH :KH29LV160CBTC-70G

2.

3.

-Game model (32MBit)

1.KH :KH29LV320CBTC-70G

2.

3.

GAME :32Mit

OFF-PAGE CONNECTION

VER:4.0
R191 33R--->120R

A9

A3

AD3

A1

A19

A4

AD6

AD1

A17

A16

A13
A14

AD0

A2

A6

A8

A18

AD7

A7

AD5

A12

A15

A10

AD2

AD4

A11

A5

A0

DBA1

DQ8

DQ14

MA11

DRAS#

MA2

DQ15

MA5

DQ10

MA4

DQ13

MA8

DBA0

DQM1

DCS#

DQ9

SDCLK

MA9

DQ11

MA3

MA6

DQM0

MA7

MA0

DCAS#
DWE#

MA10

SDCKE

DQ12

MA1

PCE#
PRD#
PWR#

AA20

DQ2

DQ5

DQ1

DQ6

DQ4
DQ3

DQ0

DQ7

SCL
SDA

WE#
CS#

PCE#
PRD#

DCLK

PWR#

DCKE
CAS#
RAS#

AD[0..7]

A[0..20]

3.3V

A20AA20

BA0

DWE#

CS#

DCKE

DCAS#

RAS#

WE#

SDCLK

DBA1

CAS#

DCS#

SDCKE

DBA0

DCLK

DRAS#

BA1

SCL

DQM[0..1]

MA[0..11]

BA[0..1]

DQ[0..15]

SDA

GND

WE#

5

CS#

5

DCLK

5

DCKE

5

CAS#

5

RAS#

5

A[0..20]

5

SDA

5

AD[0..7]

5

PWR# 5

PRD#

5

PCE#

5

3.3V

1,2,3,5

GND

1,2,3,4,5

DQM[0..1]

5

MA[0..11]

5

BA[0..1]

5

DQ[0..15]

5

SCL

5

GND

1,2,3,4,5

3.3V

SD33

SD33

DV33

DV33

DV33

DV33

SD33

U11

HY57V641620ETP-7-C

1

2
4

12

5
7

9

8
10

46

11
13

15

16

17

18

19

35

22

23
24
25
26

14

41

29
30
31
32
33
34

36

37

38

39

40

43

42
44

52

45
47

49

48
50
51
53

54

20
21

3

6

27

28

VCC

DQ0
DQ1

VSSQ

DQ2
DQ3

VCCQ

DQ4
DQ5

VSSQ

DQ6
DQ7

DQML

WE

CAS

RAS

CS

A11

A10/AP

A0
A1
A2
A3

VCC

VSS

A4
A5
A6
A7
A8
A9

NC

CKE

CLK

DQMH

NC

VCCQ

DQ8
DQ9

VSSQ

DQ10
DQ11

VCCQ

DQ12
DQ13
DQ14
DQ15

VSS

BA0/A13
BA1/A12

VCCQ

VSSQ

VCC

VSS

R189

33

CB41

0.1uF

R190

33

R195

1k

L41

FB

CB40

0.1uF

CB43

0.1uF

U12

KH29LV160BTC-70G

25
24
23
22
21
20
19
18

8

10

28

47

16

29
31
33
35

7

26

38
40
42
44
30
32

14

36
39
41
43
45

37

27

11

9

34

46

6

4

5

3
2

1
48
17

12

A0
A1
A2
A3
A4
A5
A6
A7
A8

A20

OE

BYTE

A18

D0
D1
D2
D3

A9

CE

D4
D5
D6
D7
D8
D9

WP/ACC

D11
D12
D13
D14
D15

VCC

GND

WE

A19

D10

GND

A10

A12

A11

A13
A14
A15
A16
A17

RESET

R186

0

+

CE52

47uF/10v

R191

33

R192

0

U13

24C02
SOP8

1
2
3
4 5

6

7

8

A0
A1
A2
GND SDA

SCL

WP

VCC

CB38

0.1uF

R193

10k

CB44

0.1uF

RN1

33x4

1 2

3 4

5 6

7 8

CB45

0.1uF

CB42

0.1uF

R188

33

CB39

0.1uF

CB47

0.1uF

CB46

0.1uF

+

CE51

100uF/6.3v

R194

1k

LGE Internal Use Only

3-37 3-38

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

Only for training and service purposes

CIRCUIT VOLTAGE CHART

MODE

PIN NO.

STOP PLAY

CE3

(+) 5.11 5.11

(-) 0 0

CE4

(+) 5.11 5.11

(-) 0 0

CE6

(+) 0 0

(-) 0.01 0.01

CE10

(+) 2.44 2.44

(-) 0 0

CE13

(+) 5.11 5.11

(-) 0 0

CE13

(+) 0 0

(-) 0.02 0.02

CE14

(+) 4.96 4.96

(-) 0 0

CE15

(+) 4.25 4.25

(-) 0 0

CE16

(+) 4.25 4.25

(-) 0 0

CE18

(+) 3.35 3.35

(-) 0 0

CE19

(+) 8.57 8.57

(-) 0 0

CE20

(+) 5.11 5.11

(-) 0 0

CE22

(+) 3.31 3.31

(-) 0 0

CE23

(+) 5.11 5.11

(-) 0 0

CE24

(+) 3.31 3.31

(-) 0 0

CE26

(+) 5.11 5.11

(-) 0 0

CE27

(+) 5.11 5.11

(-) 0 0

CE28

(+) 5.11 5.11

(-) 0 0

CE29

(+) 0 0

(-) -4.89 -4.89

CE30

(+) 3.31 3.31

(-) 3.31 3.31

MODE

PIN NO.

STOP PLAY

CE31

(+) 3.31 3.31

(-) 3.29 3.29

CE32

(+) 3.31 3.31

(-) 0 0

CE33

(+) 3.31 3.31

(-) 0 0

CE34

(+) 8.99 8.99

(-) 0 0

CE35

(+) 8.95 8.95

(-) 0 0

CE36

(+) 7.44 7.44

(-) 0 0

CE37

(+) 3.25 3.25

(-) 0 0

CE39

(+) 3.31 3.31

(-) 0 0

CE40

(+) 3.32 3.32

(-) 0 0

CE42

(+) 2.75 2.75

(-) 0 0

CE43

(+) 1.99 1.99

(-) 0 0

CE44

(+) 0.38 0.38

(-) 0 0

CE48

(+) 3.31 3.31

(-) 0 0

CE49

(+) 1.79 1.79

(-) 0 0

CE50

(+) 3.33 3.33

(-) 0 0

CE51

(+) 3.31 3.31

(-) 0 0

CE52

(+) 3.31 3.31

(-) 0 0

QB1(9926)

100
2 0.06 0.06

300.01
4 0.05 0.06
500
600

700.01
800

MODE

PIN NO.

STOP PLAY

Q1

Base -0.43 -0.43

Emitter 0 0

Collector 0 0

Q2

Base -0.35 -0.35

Emitter 0 0

Collector 0 0

Q3

Base 0.58 0.58

Emitter 0 0

Collector 0 0

Q4

Base 0 0

Emitter 0 0

Collector 0 0

Q6

Base 0 0

Emitter 0 0

Collector 0 0

Q7

Base 4.43 4.43

Emitter 5.11 5.11

Collector 5.02 5.02

Q8

Base 4.96 4.96

Emitter 4.96 4.96

Collector -1.90 -1.90

Q9

Base -2.06 -2.06

Emitter 0 0

Collector 0 0

Q10

Base 0.69 0.69

Emitter 0 0

Collector 0.03 0.03

Q11

Base 0 0

Emitter 0 0

Collector 0 0

Q12

Base 5.61 5.61

Emitter 0 0

Collector 5.11 5.11

Q13

Base 0 0

Emitter 0 0

Collector 0.69 0.69

Q14

Base -1.33 -1.33

Emitter 0 0

Collector 0 0

Q15

Base 0 0

Emitter 0 0

Collector 0 0

Q23

Base 0.65 0.65

Emitter 0 0

Collector 0.02 0.02

MODE

PIN NO.

STOP PLAY

Q25

Base 3.31 2.55

Emitter 3.31 3.31

Collector 0 2.17

Q26

Base 3.31 3.31

Emitter 3.31 3.31

Collector 3.31 3.31

Q27

Base 3.31 3.31

Emitter 3.31 3.31

Collector 3.31 3.31

Q28

Base 3.29 3.33

Emitter 0 3.35

Collector 3.31 0.05

Q29(4953)

1 8.64 8.57
2 8.58 0
3 9.04 9.02
4 9.03 9.05
500
600
700
800

Q30

Base 8.96 8.96

Emitter 8.96 8.96

Collector 8.96 8.96

Q31

Base 0.01 0.01

Emitter 0 0

Collector 5.11 5.11

Q32

Base 0.02 0.02

Emitter 8.60 8.60

Collector 8.58 8.58

Q33

Base 0 0

Emitter 0 0

Collector 4.96 4.96

Q34

Base 0 0

Emitter 0 0

Collector 8.96 8.96

U1(FSAV330)

100
2 0.72 0.94
3 0.73 0.58
4 0.73 0.56

500.55
6 0.72 0.53
7 0.71 0.54
800

9 0.7 0.39
10 0.7 0.38
11 0.71 0.37
12 0.92 0.88
13 0 0
14 0.92 0.93

MODE

PIN NO.

15 0 0
16 5.14 5.15

STOP PLAY

U2(4580M)

100
200
300
4 -4.92 -4.91
500
600
700
8 5.06 5.06

U3(PT2303)

100
200
3 2.47 2.46
4 5.14 5.15
5 2.47 2.47
6 2.47 2.47
700
8 2.47 2.47

9 2.46 2.46
10 2.45 2.46
11 2.47 2.47
12 2.47 2.47
13 5.14 5.15
14 2.47 2.47
15 0 0
16 0.05 0.06

U4(AM5898N)

1 2.69 2.65

2 1.28 1.28

3 1.27 1.27

4 5.02 4.84

5 8.62 8.49

6 8.66 8.53

7 8.66 8.53

8 2.48 2.32

9 2.47 2.6
10 5.14 5.14
11 1.37 1.35
12 1.37 1.6
13 0 0
14 2.48 3.65
15 2.49 1.17
16 0 0
17 2.46 2.44
18 2.48 2.51
19 0 0
20 2.47 2.38
21 2.48 2.53
22 1.37 1.35
23 1.37 1.37
24 5.14 5.14
25 0 0
26 0 0
27 0 0
28 8.64 8.51
29 3.69 3.46
30 1.26 1.25
31 1.29 1.3

MODE

PIN NO.

32 2.68 2.65
33 3.32 3.32
34 1.37 1.37

STOP PLAY

U5(TPS60400)

1 -4.92 -4.91
2 5.14 5.14
3 -2.54 -2.56
400
5 2.48 2.46

U6(S-8242A)

1 0.06 -7.59
2 0.06 0.06
300
4 -3.74 -3.8
500
6 -7.5 -7.6

U9(MT1389P)

100
2 1.53 0.91

300.78

400.59
5 1.03 0.43
6 1.7 1.71
7 1.98 2.1

802.12

9 1.98 2.13
10 1.98 2.13
11 0.35 1.02
12 0 1.01
13 0 2.02
14 1.98 2.02
15 0 0.17
16 0 0.17
17 3.33 2.26
18 3.33 3.33
19 3.35 3.35
20 2.76 0
21 0.64 0
22 0 0
23 2.71 2.72
24 0 1.99
25 1.98 1.37
26 0 1.25
27 1.32 0
28 0 1.34
29 0 0
30 2.45 1.22
31 0 1.3
32 0 0
33 1.37 1.29
34 0 0
35 0 0
36 0 1.35
37 1.36 1.25
38 0 0
39 0 3.35
40 0 0
41 0 0
42 0 3.35
43 0 0

MODE

PIN NO.

44 0 0.77
45 1.79 1.78
46 0 0
47 0 0
48 0 0.98
49 0 3.35
50 0 1.78
51 0 0.01
52 0 0
53 0 0
54 0 3
55 0 0
56 0 2.05
57 0 1.97
58 0 1.64
59 0 0.02
60 2.22 0.03
61 0 0.05
62 2.45 0.06
63 0.58 0.03
64 0 0
65 0 3.35
66 0 0
67 0 2.85
68 1.42 0.64
69 0 0.62
70 2.26 3.21
71 0 2.54
72 0 0.61
73 0.54 0.91
74 0 0.61
75 0 0
76 0 0
77 2.16 2.05
78 0 0
79 0 1.42
80 0 1.62
81 0 0
82 0 1.36
83 0.77 1.02
84 0 1.48
85 0 1.65
86 1.63 1.21
87 0 0
88 0 3.32
89 0 1.18
90 0 0
91 0 0.02
92 0 1.95
93 0 1.78
94 0 0
95 0 0
96 0 3.35
97 0 3.29
98 0 4.87

99 0 4.05
100 4.39 4.39
101 0 3.35
102 0 3.35
103 0 0

STOP PLAY

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

3-39 3-40

LGE Internal Use Only

MODE

PIN NO.

104 0 0
105 0 3.34
106 0 3.35
107 0 0
108 0 0
109 0 0
110 0 0
111 2.44 1.6
112 0 0

11300.95
114 0.84 1.05
115 0.92 1.22
116 0.92 1.18
117 1.32 1.15

11803.35

11901.13
120 1.22 1.12
121 0 1.21
122 0 1.24
123 0 1.56
124 1.68 1.36
125 0 1.25
126 0 1.21
127 1.16 1.1
128 0.96 1.05
129 1.05 1.12
130 0 0
131 3.35 3.35
132 0 1.61
133 0 3.15
134 0 2.88
135 3.18 3.1
136 0 2.66
137 0 1.55
138 1.62 1.65
139 0.08 0.1
140 0.39 0.75
141 2.12 1.37
142 1.79 1.78
143 2.3 1.9
144 1.64 1.84
145 3.35 3.34
146 1.53 1.53
147 3.35 3.35
148 0 0
149 0.02 0.03
150 0.02 0.07
151 0 0.06
152 1.24 1.58
153 1.64 1.61
154 1.22 1.61
155 0 1.5
156 3.35 3.35
157 0 0
158 0 0
159 0 0
160 1.79 1.78
161 0 0
162 0.01 0
163 0.01 0

STOP PLAY

MODE

PIN NO.

164 0.01 0
165 0.01 0
166 0.01 0
167 0.01 0
168 0.01 0
169 0.01 0
170 3.35 3.34
171 3.37 3.37
172 0.02 0.02
173 0 0
174 1.79 1.79
175 0 0.24
176 0.02 0.02
177 0.3 0.3
178 0 0
179 3.34 3.34
180 3.24 3.24
181 0.03 0.03
182 0.02 0
183 1.61 1.62
184 0.45 0
185 0.45 0.45
186 0 0
187 0.45 0.45
188 3.35 3.35
189 0 0
190 3.35 3.35
191 0.61 0.9
192 0 0
193 1.33 1.33
194 0 1.33
195 3.35 3.35
196 1.53 1.53
197 0 0
198 0 3.35
199 3.35 0
200 3.35 3.34
201 0 0
202 0 0
203 0 0
204 3 0
205 1.79 1.79
206 3.33 3.33
207 3.35 3.35
208 0 1.26
209 0 0
210 3.35 3.35

211 0 0
212 3.35 3.35
213 0.2 0
214 0 3.35
215 0 0.02
216 0 0
217 0.25 0
218 0 0
219 0 0
220 0 0
221 1.79 1.78
222 0 3.35
223 0 1.22

STOP PLAY

MODE

PIN NO.

224 0 0
225 0 0
226 0 0
227 1.67 1.66
228 1.56 1.55
229 1.64 1.65
230 3.35 3.35
231 3.35 3.35
232 0 0
233 0 1.79
234 0 0.64
235 0.71 0.58
236 0 0.81
237 0 0.76
238 0 0
239 0 3.28
240 0 1.76
241 0 1.56
242 1.56 1.56
243 1.24 1.42
244 0 3.35
245 0 0
246 0 3.35
247 3.35 1.61
248 1.34 1.35
249 1.44 1.47
250 0 1.9
251 0 0
252 1.71 1.72
253 0 1.69
254 0 1.13
255 0 0.9
256 3.35 3.35

STOP PLAY

U10(LD1117)

100
2 1.8 1.81
3 3.36 3.36
4 1.8 1.81

U11(HY57V641620ETP-7-C)

1 3.34 3.34
2 0.91 0.95
3 3.34 3.34
4 0.82 1.05
5 0.91 1.22
600
7 0.91 1.18
8 1.29 1.15

9 3.34 3.34
10 1.1 1.13
11 1.2 1.12
12 0 0
13 1.27 1.21
14 3.33 3.33
15 2.43 1.6
16 3.26 3.15
17 3.11 2.87
18 3.18 3.11
19 2.95 2.65
20 1.38 1.55
21 1.59 1.66

MODE

PIN NO.

22 0.06 0.1
23 0.38 0.75
24 2.12 1.37
25 2.29 1.9
26 1.64 1.84
27 3.34 3.34
28 0 0
29 1.61 1.5
30 1.29 1.61
31 1.62 1.61
32 1.3 1.58
33 0.06 0.06
34 0 0.07
35 0.03 0.03
36 0 0
37 3.35 3.35
38 1.55 1.55
39 2.44 1.61
40 0 0
41 0 0
42 1.03 1.12
43 3.33 0
44 0.93 1.05
45 0 1010
46 0 0
47 1.25 1.21
48 1.3 1.25
49 3.33 3.33
50 1.64 1.36
51 1.78 1.56
52 0 0
53 0.72 1.24
54 0 0

STOP PLAY

U12(KH29LV160BTC-70G)

1 0.75 2.86
2 1.41 0.64
3 1.85 0.62
4 2.25 3.21
5 1.21 2.54
6 2.06 0.61
7 0.53 0.91
8 1.98 0.61
900

10 0 0

11 3.35 3.35
12 3.35 3.35
13 0 0
14 3.35 3.35
15 0.21 0.74
16 0 0
17 0.58 0
18 2.45 1.51
19 2.07 0
20 2.22 2.6
21 1.78 1.28
22 1.92 1.64
23 1.98 1.98
24 2.09 2.06
25 2.16 2.05
26 0 0

MODE

PIN NO.

27 0 0
28 0 0
29 1.18 1.42
30 0.4 0.32
31 1.34 1.62
32 0.38 0.31
33 0.89 1.36
34 0.39 0.31
35 0.77 1.02
36 0.4 0.31
37 3.35 3.35
38 1.42 1.48
39 0.31 0.31
40 1.61 1.65
41 0.18 0.3
42 1.62 1.21
43 0.11 0.3
44 1.7 1.18
45 2.15 1.95
46 0 0
47 0 0
48 0.01 0.02

STOP PLAY

U13(24C04)

100
200
300
400
5 3.35 3.35
6 3.35 3.35
700
8 3.35 3.35

U14(GT6319)

100
200
300
400
5 5.04 5.04
6 4.21 4.21
700
8 5.04 5.04

9 5.02 5.02
10 0 0
11 1.9 1.9
12 0 0
13 2.46 2.46
14 5.04 5.04
15 5.04 5.04
16 2.19 2.19
17 0 0
18 0 0
19 5.04 5.04
20 4.59 4.59
21 5.02 5.02
22 2.14 2.14
23 5.04 5.04
24 4.99 4.99
25 4.91 4.91
26 4.5 4.5
27 0 0
28 5.02 5.02

MODE

PIN NO.

STOP PLAY

U15(HT7150)

100
2 8.66 8.61
3 5.05 5.05
4 8.66 8.61

LGE Internal Use Only

3-41 3-42

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

Only for training and service purposes

PRINTED CIRCUIT BOARD DIAGRAMS

1. MAIN P.C.BOARD

(TOP VIEW)

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

3-43 3-44

LGE Internal Use Only

MAIN P.C.BOARD

(BOTTOM VIEW)

LGE Internal Use Only

3-45 3-46

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

Only for training and service purposes

2. KEY P.C.BOARD

(TOP VIEW) (BOTTOM VIEW)

3. USB P.C.BOARD

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

3-47 3-48

LGE Internal Use Only

MEMO MEMO

LGE Internal Use Only

3-49 3-50

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

Only for training and service purposes