Internal Use Only

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SERVICE MANUAL
PORTABLE DVD
SERVICE MANUAL

MODEL: DP391B/DP392G
MODEL: DP391B/DP392G
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”
IN THIS MANUAL.

P/NO : AFN56903624 MARCH, 2008

 CONTENTS

SECTION 1.........SUMMARY
SECTION 2.........EXPLODED VIEWS
SECTION 3.........ELECTRICAL
SECTION 4.........REPLACEMENT PARTS LIST

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

UPGRADING FIRMWARE .........................................................................................................................1-5

SPECIFICATIONS ........................................................................................................................................1-7

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.
TIPS ON PROPER INSTALLATION
CAUTION: Do not attempt to modify this product in any way. Never perform
1. Never install any receiver in a closed-in recess, cubbyhole, or closely fitting shelf
customized installations without manufacturer’s approval. Unauthorized modifications
space over, or close to, a heat duct, or in the path of heated air flow.
will not only void the warranty, but may lead to property damage or user injury.
2. Avoid conditions of high humidity such as: outdoor patio installations where dew is a
Service work should be performed only after you are thoroughly familiar with these
factor, near steam radiators where steam leakage is a factor, etc.
safety checks and servicing guidelines.
3. Avoid placement where draperies may obstruct venting. The customer should also
GRAPHIC SYMBOLS avoid the use of decorative scarves or other coverings that might obstruct ventilation.
The exclamation point within an equilateral triangle is intended to alert
the service personnel to important safety information in the service 4. Wall- and shelf-mounted installations using a commercial mounting kit must follow
literature. the factory-approved mounting instructions. A product mounted to a shelf or platform
The lightning flash with arrowhead symbol within an equilateral triangle must retain its original feet (or the equivalent thickness in spacers) to provide
is intended to alert the service personnel to the presence of noninsulated adequate air flow across the bottom. Bolts or screws used for fasteners must not
“dangerous voltage” that may be of sufficient magnitude to constitute a touch any parts or wiring. Perform leakage tests on customized installations.
risk of electric shock. 5. Caution customers against mounting a product on a sloping shelf or in a tilted
The pictorial representation of a fuse and its rating within an equilateral position, unless the receiver is properly secured.
triangle is intended to convey to the service personnel the following fuse 6. A product on a roll-about cart should be stable in its mounting to the cart.
replacement caution notice: Caution the customer on the hazards of trying to roll a cart with small casters across
CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF thresholds or deep pile carpets.
FIRE, REPLACE ALL FUSES WITH THE SAME TYPE AND RATING
7. Caution customers against using extension cords. Explain that a forest of
AS MARKED NEAR EACH FUSE.
extensions, sprouting from a single outlet, can lead to disastrous consequences to
SERVICE INFORMATION home and family.
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.

Copyright © 2008 LG Electronics. Inc. All right reserved. 1-3 LGE Internal Use Only
Only for training and service purposes
 SERVICING PRECAUTIONS
CAUTION: Before servicing the PORTABLE DVD covered by Electrostatically Sensitive (ES) Devices
this service data and its supplements and addends, read and Some semiconductor (solid state) devices can be damaged
follow the SAFETY PRECAUTIONS. NOTE: if unforeseen easily by static electricity. Such components commonly are
circumstances create conflict between the following servicing called Electrostatically Sensitive (ES) Devices. Examples of
precautions and any of the safety precautions in this typical ES devices are integrated circuits and some field effect
publication, always follow the safety precautions. transistors and semiconductor chip components.
Remember Safety First : The following techniques should be used to help reduce the
incidence of component damage caused by static electricity.
General Servicing Precautions
1. Always unplug the PORTABLE DVD AC power cord from 1. Immediately before handling any semiconductor component
the AC power source before: or semiconductor-equipped assembly, drain off any
(1) Removing or reinstalling any component, circuit board, electrostatic charge on your body by touching a known earth
module, or any other assembly. ground. Alternatively, obtain and wear a commercially
(2) Disconnecting or reconnecting any internal electrical available discharging wrist strap device, which should be
plug or other electrical connection. removed for potential shock reasons prior to applying power
(3) Connecting a test substitute in parallel with an to the unit under test.
electrolytic capacitor.
Caution: A wrong part substitution or incorrect polarity 2. After removing an electrical assembly equipped with ES
installation of electrolytic capacitors may result in an devices, place the assembly on a conductive surface such
explosion hazard. as aluminum foil, to prevent electrostatic charge buildup or
exposure of the assembly.
2. Do not spray chemicals on or near this PORTABLE DVD or
any of its assemblies. 3. Use only a grounded-tip soldering iron to solder or unsolder
ES devices.
3. Unless specified otherwise in this service data, clean
electrical contacts by applying an appropriate contact 4. Use only an anti-static solder removal device. Some solder
cleaning solution to the contacts with a pipe cleaner, cotton- removal devices not classified as “anti-static” can generate
tipped swab, or comparable soft applicator. electrical charges sufficient to damage ES devices.
Unless specified otherwise in this service data, lubrication of
contacts is not required. 5. Do not use freon-propelled chemicals. These can generate
an electrical charge sufficient to damage ES devices.
4. Do not defeat any plug/socket B+ voltage interlocks with
which instruments covered by this service manual might be 6. Do not remove a replacement ES device from its protective
equipped. package until immediately before you are ready to install it.
(Most replacement ES devices are packaged with leads
5. Do not apply AC power to this PORTABLE DVD and / or any electrically shorted together by conductive foam, aluminum
of its electrical assemblies unless all solid state device heat foil, or comparable conductive material).
sinks are correctly installed.
7. Immediately before removing the protective material from
6. Always connect the test instrument ground lead to an the leads of a replacement ES device, touch the protective
appropriate ground before connecting the test instrument material to the chassis or circuit assembly into which the
positive lead. Always remove the test instrument ground device will be installed.
lead last.
Caution: Be sure no power is applied to the chassis or
Insulation Checking Procedure circuit, and observe all other safety precautions.
Disconnect the attachment plug from the AC outlet and turn
the power on. Connect an insulation resistance meter (500V) 8. Minimize bodily motions when handling unpackaged
to the blades of the attachment plug. The insulation resistance replacement ES devices. (Normally harmless motion such
between each blade of the attachment plug and accessible as the brushing together of your clothes fabric or the lifting
conductive parts (Note 1) should be more than 1Mohm. of your foot from a carpeted floor can generate static
Note 1: Accessible Conductive Parts include Metal panels, electricity sufficient to damage an ES device.)
Input terminals, Earphone jacks,etc.

LGE Internal Use Only 1-4 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
 UPGRADING FIRMWARE
Please follow the below process to download a program with disc
1. Turn on the DVD-player. 8. Insert the copied USB memory stick to DVD-player.
(Note. Be sure that there is no disc in DVD-player)
9. Press the MODE button on the Potable DVD-player.
2. Press “SETUP” button on Remote control.
10. Select External and USB.
3. Choose a “display” menu by using the cursor button
and then choose a “TV Aspect” menu. And choose
“16:9” menu.

4. Press the 1 --> 3 --> 9 --> 7 --> 1 --> 3 --> 11. If the below picture appears on the screen, Select
9(numerical button) --> Enter key on remote control “Start” and Press “OK” button on Remote controller.
to confirm the system information. While this menu appears, please don’t eject
disc or take out USB
5. Remember or write the model name.

12.After the below picture appears on the screen, New

6. Change the program file name of new version to DVD program will download from USB memory
the model name stick automatically.
Ex> New ver. program file --> Do not take out the USB memory stick.
LG_DV_LP81F32000AZV_V014.ROM
Model name --> LG_DV_LV80F32000AZV
Change New ver. program file like this -->
LG_DV_ LV80F32000AZV.ROM
If you don”t change the file name like that, Disc
download isn”t be worked.

7. Copy the changed file to a USB memory stick.

Copyright © 2008 LG Electronics. Inc. All right reserved. 1-5 LGE Internal Use Only
Only for training and service purposes
13.After USB download is completed, DVD-player 17.Do it again the process 1, 2, 3, 4 to confirm the
displays below picture automatically. version.

14.Press the Reset button on the DVD-Player. 18.Press the Reset button on the DVD-Player.

15.Remove the USB memory stick.

16.Turn on the DVD-player. Select the initial Language

and Press “Enter” button.
Then, Select “Enter” and Press “Enter” button.

LGE Internal Use Only 1-6 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
 SPECIFICATIONS
• DVD PLAYER
Power supply DC 12V (AC adapter terminal), DC 7.5V (Battery)
Power consumption 12W
Weight 980g (without battery pack)
External dimensions(W X D X H) 230 X 145.5 X 39(mm)
Signal system PAL
Laser Semiconductor laser and 1 beam / 2LD System
Frequency range (audio) DVD linear sound:48kHZ sampling 4HZ to 20kHZ
Signal-to-noise ratio(audio) More than 80dB
Dynamic range(audio) More than 80dB
Harmonic distortion(audio) 0.04%
Operating conditions(audio) Temperature: 41°F to 95°F

• TERMINALS
DC input 1
Composite Video IN/OUTPUT 1
Audio IN/OUTPUT
Earphone output 2
Mini USB input 1
3 in 1 memory slot 1

• LIQUID CRYSTAL DISPLAY

Panel size 8inches (16:9)
Projection system TN color transmission
Driving system TFT active matrix

• SUPPLIED ACCESSORIES
RCA Audio/Video cable 1
AC Adapter (MPA-630A) 1
Car Adapter (WLD-041) 1
USB Cable 1
Remote control 1
Battery for Remote control (Lithium) 1

Copyright © 2008 LG Electronics. Inc. All right reserved. 1-7 LGE Internal Use Only
Only for training and service purposes
 MEMO

LGE Internal Use Only 1-8 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. 2-1 LGE Internal Use Only
Only for training and service purposes
 EXPLODED VIEWS
1. CABINET AND MAIN FRAME SECTION
CAUTION)

O
Do not reuse the battery cell,
after separating the battery

A47
cell from the battery case.

A44
264

A00
279
262

CABLE5
N
CABLE8
260

CABLE1
A50
M

L
K

CABLE2
278

J
263

277

CABLE3
271

272

271
270

CABLE4
I

H
H

J
A40

G
L
N

276
M

E
O
A46
271

256
270

A48

274
A53

A
D
C

254
255
CABLE7
A51

275
255
258

256

273
G
F P
B
258

257
259

D
C

275
256

P
B

252
253
A52

CABLE6

257

251
250

A43

LGE Internal Use Only 2-2 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2. PACKING ACCESSORY SECTION

834 CABLE, CIGAR JACK 808 BATTERY

836 CABLE, USB 801 OWNER'S MANUAL

806 PLUG ASS'Y(RCA CABLE) 804 PACKING SHEET

833 CORD

803 BAG

900 REMOTE CONTROL

802B BOX

802A BOX

802 BOX

Copyright © 2008 LG Electronics. Inc. All right reserved. 2-3 LGE Internal Use Only
Only for training and service purposes
 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 7. LCD DRIVE IC(U701) SYSTEM CLOCK
LCD ELECTRICAL (27MHz)........................................................3-32
8. ZR36966 VIDEO OUTPUT WAVEFORM ....3-32
TROUBLESHOOTING GUIDE ....................3-2 9. AUDIO OUTPUT FROM AUDIO DAC .........3-33

WIRING CONNECTION DIAGRAM ...........3-3 WIRING CONNECTION DIAGRAMS ......3-34

LCD PCB <---> KEY PCB, BACK LIGHT, 1. OVERALL CONNECTION LAYOUT
LCD PANNEL .....................................................3-3 DIAGRAM.....................................................3-34
2. WIRING CONNECTION DIAGRAM-1 .........3-35
INTERFACE DIAGRAM .................................3-4 3. WIRING CONNECTION DIAGRAM-2 .........3-36
LCD PCB <---> KEY PCB INTERFACE.............3-4
INTERNAL BLOCK DIAGRAM OF ICs ..3-37
BLOCK DIAGRAM ..........................................3-5 1. MOTOR DRIVE IC(AM5898N).....................3-37
2. LCD DRIVE IC(T103)...................................3-39
CIRCUIT DIAGRAMS .....................................3-7 3. VOLUME CONTROLLER IC(PT2257).........3-43
1. LCD I/F CIRCUIT DIAGRAM .........................3-7 4. SPEAKER AMP IC(PT2303) ........................3-44
2. PANEL I/F CIRCUIT DIAGRAM .....................3-9 5. MICOM IC(GT6319).....................................3-45
3. FRONT KEY BOARD
CIRCUIT DIAGRAM .....................................3-11 INTERFACE DIAGRAM ...............................3-47
4. LCD BACKLIGHT CIRCUIT DIAGRAM .......3-13 MAIN <---> LCD PCB INTERFACE .................3-47

PRINTED CIRCUIT BOARD BLOCK DIAGRAMS .....................................3-48

DIAGRAMS ......................................................3-15 1. OVERALL BLOCK DIAGRAM......................3-48
1. LCD P.C.BOARD..........................................3-15 2. POWER BLOCK DIAGRAM ........................3-49
2. FRONT KEY P.C.BOARD ............................3-15 3. MPEG BLOCK DIAGRAM ...........................3-50
3. BACK-LIGHT P.C.BOARD ...........................3-16 4. DISC BLOCK DIAGRAM .............................3-51
5. AV BLOCK DIAGRAM..................................3-52

MAIN PART....................................................3-19
CIRCUIT DIAGRAMS ...................................3-53
MAIN ELECTRICAL 1. MPEG CIRCUIT DIAGRAM .........................3-53
TROUBLESHOOTING GUIDE ..................3-19 2. MEMORY CIRCUIT DIAGRAM....................3-55
1. POWER (DC-DC CONVERTER) 3. OPU & MOTOR CIRCUIT DIAGRAM ..........3-57
CIRCUIT.......................................................3-19 4. AV CIRCUIT DIAGRAM ...............................3-59
2. MPEG CIRCUIT ...........................................3-22 5. CHARGE CIRCUIT DIAGRAM ....................3-61
3. RF/SERVO CIRCUIT ...................................3-23 6. MAIN KEY CIRCUIT DIAGRAM ..................3-63
4. CHARGEING CIRCUIT................................3-26
CIRCUIT VOLTAGE CHART ......................3-65
DETAILS AND WAVEFORMS ON 1. IC VOLTAGE CHART...................................3-65
SYSTEM TEST AND DEBUGGING .........3-27 2. CAPACITOR VOLTAGE CHART..................3-66
1. SYSTEM 27MHz CLOCK ............................3-27
2. SDRAM CLOCK...........................................3-27 PRINTED CIRCUIT
3. DISC TYPE JUDGEMENT WAVEFORM.....3-28 BOARD DIAGRAMS .....................................3-67
4. FOCUS ON WAVEFORM ............................3-30 1. MAIN P.C.BOARD........................................3-67
5. SPINDLE CONTROL WAVEFORM 2. MAIN KEY P.C.BOARD................................3-67
(NO DISC CONDITION)...............................3-30 3. MIS P.C.BOARD ..........................................3-69
6. TRACKING CONTROL RELATED SIGNAL
(SYSTEM CHECKING) ................................3-31

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-1 LGE Internal Use Only
Only for training and service purposes
 LCD PART
LCD ELECTRICAL TROUBLESHOOTING GUIDE
Appear shadow form
interference in black background
Display condition? Inverter abnormal
NO

YES

NO
Backlight condition? U704, Q701, Q702 check

YES

NO
+10V, 15V, -10V normal? FB701, FB702, L703, U703 check

YES

NO
+10V normal? L801, L802, FB701, FB702

YES

Check LCD driver IC(U701)

NO R : 58, 59, 62, 63, 64, 65
RGB signal output? G : 49, 50, 52, 53, 54, 55
B : 38, 40, 42, 43, 44, 45
YES

NO
VOCM level(3.3V)? Check L802

LGE Internal Use Only 3-2 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
 WIRING CONNECTION DIAGRAM
LCD PCB <---> KEY PCB, BACK LIGHT, LCD PANNEL
Front key PCB

LCD Pannel
Back-light PCB

LCD PCB

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-3 LGE Internal Use Only
Only for training and service purposes
 INTERFACE DIAGRAM
LCD PCB <---> KEY PCB INTERFACE
J807
807 J901
901
1 K2 KEY data 8 K2
2 IR R/C d ata 7 IR
3 LED_G 6 LED_G
4 LED_R LED Control 5 LED_R
5 LED_B 4 LED_B
6 GND 3 GND
7 5VA Power 2 5VA
8 GND 1 GND

1 8

8 1

LGE Internal Use Only 3-4 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
 BAT_OUT 3.3V
PWRCTL_LCD LCD
LED_POWER
Backlight

Only for training and service purposes

INVERTER
LCD PANEL
8î inch

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

VID[0] ~ VID[7] 2.5V/3.3V INNOLUX
MPEG VCLK, SCL,
ZORAN SDA, STB
POL,STHR,STHL,DCLK
T103 LP,GCLK,GOE,STVL,
ZORAN966_LV STVR,R/L,U/P,EDGSL

3-5
LCD Drive R(0~5),G(0~5),B(0~5)
V1~V14

27MHz
Terawins VGH , VGL
BLOCK DIAGRAM

10V

3.3V GAMMA
LCD_POWER
VLC (10V) TABLE
BLOCK

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 DIAGRAMS
1. LCD I/F CIRCUIT DIAGRAM

3.3V
Changed component :
RN701~RN707 7EA(33ohm array resistant --> MEA3216L50R0T Array bead)
2 L707 <AVDD33>
FB0603
P.ON(3.25V/30mA)
1

DVD_PLAY(3.24V/30mA) CON20_0.8MM
AVDD33 J702
VDD33 VDD33 K2 1
D701 D704 IR 2
C703 C701 C704 C702 D_15V FB701 FB702 D_10V LED_G 3
0.1uF 0.1uF 0.1uF 0.1uF 1 2 1 2 VGH VGL 1 2 1 2 LED_R 4
VGH=+15V VGL=-10V RN701 5
FB0805 FB0805 R/L MEA3216L101R 1 9 6
B0 2 8 B0D 7 22
3.3V R701 R710 C723 C722 B1 B1D
3 7 8
0 NC B2 4 6 B2D 9 21
<VDD33> 4.7uF/25V 4.7uF/25V 10
2

R715 11
P.ON(3.25V/40mA)

10
L708 7.5K 12
R714
FB0603 DVD_PLAY(3.25V/40mA) 6.2K D703
RN702 G3D 13
VDD33 R/L U/D B3 MEA3216L101R 1 9 B3D G2D 14
1

1 C725 1uF B4 2 8 B4D 15

C726 C729 B5 3 7 R734 33 B5D G1D 16
C711 C712 C713 C714 1uF 2 G0 4 6 R735 33 G0D 17
0.1uF 0.1uF 0.1uF 0.1uF 18
R702 R703 3 C724 1uF G0D 19

10
NC 0 0.1uF 20
BAT54S
RN703
STHR MEA3216L101R 1 9 STHRD R731
D702 STHL 2 8 STHLD 0
D705
2.5V BAT54S CLK 3 7 CLKD
3 1 OEH 4 6 OEHD
VDD25 C730 C728
2 2

10
C706 C710 C709 C705 1 3
0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF
C727 RN704
BAT54S G1 MEA3216L101R G1D
0.1uF 1 9
G2 2 8 G2D
G3 3 7 G3D
G4 4 6 G4D
<VLC>
P.ON(3.25V/140mA)

10
L703 D706
L704 SS14
10uH DVD_PLAY(3.24V/155mA) RN705
3.3V 1 2 VLC G5 MEA3216L101R 1 9 R732 33 G5D

1
VLC=+10V R0 2 8 R733 33 R0D
+ R1 3 7 R1D
C734 C732 6.8uH R2 R2D STVRD
4 6 18
0.1uF 0.1uF C733 C735 C736 STVLD 18
<2.5V> 17 19
17 19

2
22uF/16V 22uF/16V 22uF/16V OEVD 16 20
P.ON(2.35V/90mA) 16 20

10
U702 2.5V CKVD 15
L702 15
3.3V AZ1117H-ADJ SMD DVD_PLAY(2.35V/92mA) OEHD 14
14
4 1 2 L701 AVDD33 RN706 CLKD 13
3 TAB 2 FB(1206) AVDD33 VDD25 VDD33 FB0603 R3 MEA3216L101R 1 9 R3D STHLD 12 13
GND

IN OUT 12
1

1 2 R4 2 8 R4D STHRD 11
R711 C721 CM701 R5 3 7 R5D POLD 10 11
+
10

1
680 100uF/10V CM704 R716 C731 U/D 4 6 U/DD U/DD 9
9
1

0.1uF 4 + 100uF/10V 68K 0.1uF R5D 8

8
2

C708 C707 R4D 7

7

10
0.1uF 0.1uF R3D 6
6

2
R712 680 1 2 3 RN707 R2D 5
11
99

17
41
66
89

35
48
61
73

91

95
5
1
6

U703 CKV MEA3216L101R 1 9 CKVD R1D 4

4

1
AZ1117H-ADJ SMD RCR2561 R718 OEV 2 8 OEVD R0D 3
AVDDG
AVDDB

AVDDP

AVDDP
VDD25
VDD25
VDD25
VDD25

VDD33
VDD33
VDD33
VDD33
AVDDR
AVDDDAC

2K STVL 3 7 STVLD G5D 2 3

SW
IN
2 36 R717 STVR 4 6 STVRD G4D 1 2
3 ACB2 QE0 37 10K 1
ACB1 QE1 B0 J701
4 38 4 3

GND
ACB0 QE2 EN FB

10
40 B1 CON18_0.8MM
QE3 B2
7 42
AY2 QE4 B3 POL R713 33 POLD
8 43
AY1 QE5/sRL

2
9 44 B4 R719
AY0 QE6/sUD B5 10K
45
QE7/sHSo
12 46
13 ACR2 QE8/sVSo 47
CVBS_IN_LCD 14 ACR1 QE9/sDEN 49 G0
ACR0 QE10/sD0 50 G1
QE11/sD1 G2
18 52
VSI QE12/sD2 G3 J703
19 53
HSI QE13/sD3 G4 VGH
54 12 13
QE14/sD4 G5 VGL 12 13
97 55 11 14
SOYIN QE15/sD5 56 VLC 10 11 14
VID0 QE16/sD6 10
VID1
78
79 VDT0
VDT1
U701 QE17/sD7
QE18/VDT10/CC_B
57
58 R0 LED_POWER
9
8 9
8
VID2 R1
VID3
80
81 VDT2
VDT3
T103 QE19/VDT11/CC_G
QE20/VDT12/CC_R
59
62 R2
7
6
7
6
VID4 82 63 R3 3.3V 5
VID5 VDT4 QE21/VDT13/CC_BOX R4 5
83 64 4
VID6 84 VDT5 QE22/VDT14/CC_Y 65 R5 3 4
VID7 85 VDT6 QE23/VDT15/CC_CKO 5VA 2 3
VCLK 86 VDT7 LED_B 1
2
VCLK 67 POL 1
C746 HSO/POL STHR CON12_0.8MM
30 68
20pF 34 PWM3/VDT8/CC_HSO VSO/STH1 69 STHL
33 GPIO3/VDT9/CC_VSO DEN/STH2 71 CLK R730 10
GPIO2/VDT17/VDT10/CC_B/AP CLKO/CLKH OEH TP703
32 72 L706 <Backlight>
31 GPIO1/VDT11/CC_G/Q1H LP 74 CKV TP704 FB1206
GPIO0/VDT12/CC_R GCLK OEV BAT_OUT P.ON(7.48V/140mA) U704 C742
29 75 1 2
PWM2/VDT16/VDT13/CC_BOX GOE
28
PWM1/VDT14/CCY STV1
76 STVL DVD_PLAY(7.48V/140mA) MP2359DT
27 77 STVR C743 5 1
87 IR1/VDT15/CC_CKO STV2 C741 C738 C737 IN BST 0.01uF
88 LODD/LVSync 0.1uF 10uF/25V 2.2uF/25V X5R L705
LHREF/LHSnC 10uF/25V 6
93 R723 SW LSS57S30-330
FILT C740

2
94 10K R720 LED_POWER

GND
SCL/SCANB

98 VPLL 100K 0.33uF 4 3 D707 D708

XCLK2MC

C719 VREF EN FB C744

CPUINT

SS14 13V
AGNDG
AGNDR

GNDAC
AGNDB

TP702
XTALO
1

GNDP
GNDP

330pF CM702 C739 0.1uF

XTALI

RSTB

GND
GND
GND
GND
GND
GND

2
SDA

3
E
+ + R726 2.2uF/16V X5R

1
2N3906
C718
3300pF C717 100uF/10V C720
CM703
100uF/10V
10K 1
B Q702 OFF-PAGE CONNECTION
2

21
22

24
25

26
23
20

5
10
15
92
96
100

16
39
51
60
70
90

C
0.1uF 0.1uF
Q701

2
R729 R722
2N3904

1
I2C_SDA R704 33 TP701 C 270K 1K VID0
R709 I2C_SCL R705 33 PWRCTL_LCD D709 2 VID0 VID1
1B
2 VID1
15K B340LA VID2
2 VID2 VID3
X701 R706 0 R725 E
2 VID3

2
27MHz R707 75(1%) 10K VID4
R721 2 VID4 VID5
1 2
R724 68K 2 VID5 VID6
2 VID6
10K VID7
3 2 VID7 VCLK
R727 R728
6.8 1% NC 2 VCLK
I2C_SCL
2,5 I2C_SCL I2C_SDA
2,5 I2C_SDA
C716 R708 C715 PWRCTL_LCD
20pF 1M 22pF /M_RESET 2 PWRCTL_LCD /M_RESET
2,3,6 /M_RESET CVBS_IN_LCD
2 CVBS_IN_LCD

K2
6 K2 IR
6 IR LED_G
6 LED_G
LED_R
6 LED_R LED_B
6 LED_B

BAT_OUT
4,6 BAT_OUT 3.3V
2,3,4 3.3V 5VA
4,5,6 5VA GND
2,3,4,5,6 GND

07.LCD I/F
Friday , February 15, 2008

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-7 3-8 LGE Internal Use Only
Only for training and service purposes
2. PANEL I/F CIRCUIT DIAGRAM

CON20_0.8MM

1
2 G0
3
4
5 G1 L801 CON8_1.0MM
6 10uH K2 1
22 7 G2 3.3V 3V3P IR 2
8 G3 LED_G 3
21 9 B5 LED_R 4 10
10 B4 C816 C818 C817 LED_B 5 9
11 B3 0.1uF 22uF/16V 0.1uF 6
12 B2 5VA 7
13 B1 R836 R840 8
14 B0 0 0
15 R/L VLC 10.0V 6.936V V5 3.064V V10 J807
16

2.2uF

2.2uF

2.2uF
17 LED_R C806 C811
18 LED_G R803 R804 C823 R813 R814 C824 R823 R824
19 IR 56 1K 2.2uF 91 1.5K 0.1uF 2.2uF 56 1K 0.1uF
20 K2 R837 R841

C801

C819

C820
0 0
J802 9.475V V1 6.157V V6 2.581V V11

C802 C807 C812 L802

R805 R806 R815 R816 C825 R825 R826 FB
J803 12 15 0.1uF 110 1.5K 0.1uF 2.2uF 68 3K 0.1uF 3.3V VCOM
R833 R838 R842
18 G4 0 0 0
18 G5 9.414V V2 5.400V V7 1.966V V12 3V3P 3V3P
19 17
19 17 R0
20 16
20 16 R1 C803 C808 C813
15
15 R2 R807 R808 R817 R818 C826 R827 R828 J804 J805
14
14 R3 150 6.2K 0.1uF 82 3.3K 0.1uF 2.2uF 150 6.2K 0.1uF 3V3P POL
13 1 1
13 R4 R834 R843 STVR G5
12 2 2
12 R5 0 0 OEV G4
11 3 3
11 U/D 8.034V V3 4.600V V8 0.586V V13 R801 CKV G3
10 4 4
10 POL NC STVL G2
9 5 5
9 STHR C821 C804 C809 C814 G1
8 6 32 6 32
8 STHL 2.2uF R809 R810 R819 R820 R829 R830 G0
7 7 31 7 31
7 CLK 68 3K 0.1uF 110 1.5K 0.1uF 12 15 0.1uF STHL
6 8 8
6 OEH C827 R835 R839 R802 V9 VCC=3.3V
5 9 9
5 CKV C828 56pF 0 0 0 VGL
4 10 10
4
3 OEV 20pF 7.419V V4 3.843V V9 0.525V V14 V2 11
VGL=-10V CLK 11
3 STVL VGH
2 12 12 VCC=3.3V
2 STVR C822 C805 C810 C815 V6 VGH=+15V STHR
1 13 13
1 2.2uF R811 R812 R821 R822 R831 R832 U/D OEH
14 14
CON18_0.8MM 56 1K 0.1uF 91 1.5K 0.1uF 1K 0.1uF VCOM 15 B5 15
56 VCOM=3.3V
16 B4 16
VLC 17 B3 17
V14
AVDD=+10V B2
18 18
V11 19 B1 19
V8 20 B0 20
V5 21 R/L 21
V3 22 V1 22
23 V4 23
R5 24 V7 24
J801 R4 25 V10 25
CON12_0.8MM R3 26 V12 26
1 VGH R2 27 V13 27
1 VGL R1 VLC
2 28 28 AVDD=+10V
2 VLC R0
3 29 29
3 VCOM
4 30 30 VCOM=3.3V
4 LED_POWER
5
5
6
6 CON30_0.5MM CON30_0.5MM
7
7 3.3V
8
8
9
9
10
10 5VA
14 11
14 11 LED_B
13 12
13 12
J806
CON4_1.0MM
4
3 5
2 6
LED_POWER 1

08.PANEL I/F
Friday, February 15, 2008

LGE Internal Use Only 3-9 3-10 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. FRONT KEY BOARD CIRCUIT DIAGRAM
1
RIGHT
2

ENTER
3 4
UP DOWN

5 GND
6
LEFT

SW901
SOQ-152BJST
9 10
PAD PAD
RIGHT 1 4 DOWN
a c
ENTER 2 5
CEN COM

MAIN BOARD <-> FRONT BOARD UP 3

b d
6 LEFT

MAIN KEY <--> GT6319 8

PAD PAD
7

R904 R905 R902 R903 R908 R907 R901 R906

J901 1.2K 1% 1.5K 1% 2K 1% 3K 1% 4.7K 1% 8.2K 1% 15K 1% 39K 1%
8 K2
7 IR
6 LED_G

2
4

2
4

2
4

2
4
9 5 LED_R
10 4 LED_B

G
STOP
SW905

SW903

SW904

SW902
REW
PLAY

FF
3
2 5VA
1
G

G
CON8_1.0MM
1
3

1
3

1
3

1
3
J902
HRM538CB5100
5VA

R912 123
IR G VCC 1.Ref
R909
2.Anode

1
2
3
4.7K 100
3.Cathode

D901 PG05GBUSC
2
C901
20pF C903
C902
0.1uF 1 4
22uF/16V
A C
1

2 5
CENTER COM
5VA

R911
1K
R910
1K 3 6
B D
R914 R913 R915
3

2K 2K 2K
LED901
MUILT TACT SW CIRCUIT DIAGRAM
R/Y/O
G

1S0606V3G40CB01(SML-521)
1

1
RED GREEN
LED903 LED904 LED905
BLUE BLUE BLUE
4

2
09.KEY
Friday, February 15, 2008

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-11 3-12 LGE Internal Use Only
Only for training and service purposes
4. LCD BACKLIGHT CIRCUIT DIAGRAM

JB02
JB01 3.5-2P
CON4_1.0MM 1 4
1 4
4
5 3 LED_POWER LED_POWER 2 3
2 3
6 2
1

11. LCD Backlight

Friday, February 15, 2008

LGE Internal Use Only 3-13 3-14 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
PRINTED CIRCUIT BOARD DIAGRAMS
1. LCD P.C.BOARD
(TOP VIEW)

(BOTTOM VIEW)

2. FRONT KEY P.C.BOARD 3. BACK-LIGHT P.C.BOARD

(TOP VIEW) (TOP VIEW)

(BOTTOM VIEW) (BOTTOM VIEW)

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-15 3-16 LGE Internal Use Only
Only for training and service purposes
 MEMO MEMO

LGE Internal Use Only 3-17 3-18 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 No power on
by ADAPTOR by BATTERY

YES YES

NO Is NO
Is ADAPTOR Replace ADAPTOR Replace BATTERY
BATTERY OK?
out 12V

YES YES

NO A
Is D606 OK. Replace D606

YES

YES

No +1.8V No +3.3V No +5V No LCD power

YES

Is U204 NO
Replace U204 Replace U401 Replace U704
3.3V OK?

YES

Is U401 NO
Replace U401
3.3V OK?

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-19 LGE Internal Use Only
Only for training and service purposes
 MAIN ELECTRICAL TROUBLESHOOTING GUIDE

B. AUDIO OUT ABNORMAL C. VIDEO OUT ABNORMAL

Audio out abnormal Video out abnormal

YES YES

Check Audio jack & mode Check Video jack & mode

YES YES

Check U504 Check Video signals from MPEG

YES YES

Check signals from MPEG Check IC(U501)

YES YES

Replace IC(U504) Check LC filter

D. AUDIO IN/SPEAKER ABNORMAL E. VIDEO IN ABNORMAL

Audio in/speaker
Video in abnormal
abnormal

YES YES

Check Audio jack & Check Video jack

mode S/W & mode

YES YES

Is Q510 NO Replace NO Replace

and Q519 OK. Q510 and Q519 Is U501 OK. (U501 IC)

YES YES

NO Check
Is speakers OK. Speakers
Replace U701 Pin 14

YES YES

Replace IC(U502) Refer to LCD part

LGE Internal Use Only 3-20 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
 MAIN ELECTRICAL TROUBLESHOOTING GUIDE

F. PICTURE ABNORMAL G. DISC ERROR

Picture abnormal Disc error

YES YES

Check the disc. Check Disc

YES YES
YES(If OK)

Refer to SERVO part Refer to SERVO part

YES YES
(If OK) YES(If OK)
Check MPEG_CLK
Replace B/D
Signal of MPEG part
YES
YES(If OK)

Check MPEG (IC U201)

YES

Replace B/D

H. OPEN/CLOSE ABNORMAL

OPEN/CLOSE abnormal

YES

Check SW402 switch

YES

NO
Check IC(U203) Pin 130 Check the connectin of MD.

YES YES

Refer to SERVO part. Refer to SERVO part.

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-21 LGE Internal Use Only
Only for training and service purposes
 MAIN ELECTRICAL TROUBLESHOOTING GUIDE
2. MPEG CIRCUIT
Power is on

Does Logo appear NO

Check power & clock.
on the screen?
YES
YES

Does the NO NO
Is MPEG data Check CD/DVD DSP
Video of the DVD Disc
play properly? signal normal? output signal.
OK OK

YES Check MPEG Decoder

YES
input signal.

YES Is error NO Check CD/DVD DSP

signal normal? output signal.
YES

Check MPEG Decoder

input signal.

Does the NO NO Check CD/DVD DSP

Video of the video CD Is MPEG data
play properly? signal normal? output signal.

OK

OPTION Check MPEG Decoder

If included VCD function. input signal.

NO
Is Clock normal? Check clock signal

YES

Does NO Does the audio NO

the audio sound output signal output from MPEG Check clock signal
normally? decoder?

YES YES

END

LGE Internal Use Only 3-22 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
 MAIN ELECTRICAL TROUBLESHOOTING GUIDE
3. RF/SERVO CIRCUIT

NO
Put Disc in. Laser off

YES

Disc ID NO Proper RFL signal NO Check the related circuit on

is correct? on U203? U203 RFL signal .

YES

YES Check the RFL connection

between J401 and U203.

Does NO Proper DMSO NO Check DMSO

spindle rotate. signal on U203 related circuit on U203.

YES YES

Check the cable connection

Replace IC(U203)
between spindle and main PCBA.

YES

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-23 LGE Internal Use Only
Only for training and service purposes
 MAIN ELECTRICAL TROUBLESHOOTING GUIDE

YES

NO Proper NO Check connections between

Focus on OK. signals on A, B, C, D
U203 and pick-up head.
of U203

YES

Proper FEO signal NO Check the related circuit

on U203. on U203 FEO sugnal.
YES
YES

Check IC(U401)

NO Proper FEO NO Check the

Track on OK.
signal on U203. related circuit on U203

YES

Properly TRSO NO Check the TRSO connection

signal on U203. on U203 and motor dirver.

YES

YES
T+ & T- Check the tracking control
output properly. amp circuit on motor driver.

YES

Check cable connection

on pick-up head.

YES

NO
Disc is play? Check RF signal waveform.

YES

LGE Internal Use Only 3-24 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
 MAIN ELECTRICAL TROUBLESHOOTING GUIDE

YES

Normal NO Proper NO Check Aout_L related circuit

Audio output when Aout_L, Aout_R
signal on U203 Aout_R
disc playback.

YES NO Check the related circuit of

Audio DAC.

YES

Check Audio filter, amplify,

mute circuit.

Commu-
Normal NO nications between NO Check communication
IR. VFD & Front pannel IR.VFD Front pannel key & lines on U203
key functions. U203 & Front µ-com
is normally.

YES YES

NO Check the cable connection

TEST END
on Front pannel.

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-25 LGE Internal Use Only
Only for training and service purposes
 MAIN ELECTRICAL TROUBLESHOOTING GUIDE

4. CHARGEING CIRCUIT

NO
No turn on Red LED Is 8.4V of J605_Pin 1 OK?

YES

NO
Is F601 OK? Replace F601.

YES

NO
Is IC(U601) OK? Replace IC(U601).

YES

NO
Is L602 OK? Replace L602.

YES

NO
Is U603 OK? Replace IC(U603).

LGE Internal Use Only 3-26 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING
1. SYSTEM 27MHz CLOCK
1) ZR36966 main clock is at 27MHz (X201)

FIG 1-1

2. SDRAM CLOCK
1) ZR36966 main clock is at 27MHz (R308)

FIG 2-1

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-27 LGE Internal Use Only
Only for training and service purposes
3. DISC TYPE JUDGEMENT WAVEFORM

F+(U401 PIN8)

FE

RFL(J401 PIN9)

FIG 3-1

F+(U401 PIN8)

FE

RFL(J401 PIN9)

FIG 3-2

LGE Internal Use Only 3-28 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
 F+(U401 PIN8)

FE

RFL(J401 PIN9)

FIG 3-3

F+(U401 PIN8)

FE

RFL(J401 PIN9)

FIG 3-4

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-29 LGE Internal Use Only
Only for training and service purposes
4. FOCUS ON WAVEFORM

FOSO(U401 PIN11)

F+(U401 PIN8)

F-(U401 PIN9)

FIG 4-1

5. SPINDLE CONTROL WAVEFORM (NO DISC CONDITION)

DMSO(U401 PIN12)

SP-(U401 PIN15)

SP+(U401 PIN14)

FIG 5-1

LGE Internal Use Only 3-30 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
6. TRACKING CONTROL RELATED SIGNAL (SYSTEM CHECKING)

TE

TRSO(U401 PIN23)

T-(U401 PIN18)

T+(U401 PIN17)

FIG 6-1

TE

TRSO(U401 PIN23)

T-(U401 PIN18)

T+(U401 PIN17)

FIG 6-2

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-31 LGE Internal Use Only
Only for training and service purposes
7. LCD DRIVE IC(U701) SYSTEM CLOCK (27MHz)

FIG 7-1

8. ZR36966 VIDEO OUTPUT WAVEFORM

1) Full colorbar signal (CVBS)

(U501 PIN13)

FIG 8-1

LGE Internal Use Only 3-32 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
9. AUDIO OUTPUT FROM AUDIO DAC
1) Audio L/R

MR 1kHz 0dB

(JK601 PIN4, 5)

FIG 9-1

2) Audio related Signal

Audio R+
(U203 PIN113)

Audio R-
(U203 PIN114)

FIG 9-2

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-33 LGE Internal Use Only
Only for training and service purposes
 WIRING CONNECTION DIAGRAMS
1. OVERALL CONNECTION LAYOUT DIAGRAM
Front key PCB

LCD Panel

Back-light PCB
LCD PCB

Main
PCB

TOP Key PCB

PC
Speaker
Spe ker

Main
Chassis

LGE Internal Use Only 3-34 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2. WIRING CONNECTION DIAGRAM-1
(MAIN PCB <---> KEY PCB, Battery, Speaker)

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-35 LGE Internal Use Only
Only for training and service purposes
3. WIRING CONNECTION DIAGRAM-2
(MAIN PCB <---> LCD PCB)

Main
PCB

LCD PCB

LGE Internal Use Only 3-36 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
 INTERNAL BLOCK DIAGRAM OF ICs
1. MOTOR DRIVE IC(AM5898N)
1-1. Block Diagram

BIAS MUTE EN1 CT1 COMP1 SW1 IPK1 PGND2 PGND1 PGND VCC2 VINTK VINSP VOSP- VOSP+ MGND VOTK-

34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18
PGND PGND GND PGND MGND
CT1

COMP1 PVCC

SW1
Vcc2

DC-DC I
10K
IPK1
EN1

+ Spindle Actuator
- Driver(4X) Driver(6X)
MUTE 15K

10K +
-
25K
Vcc2

+ Vcc2
-
Vcc1
10K 25K

10K + Sled Actuator

- Driver(4X) Driver(6X)
25K
EN2

PVCC COMP2

IPK2

DC-DC II
SW2
CT2

GND Vcc1 MGND MGND

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
EN2 CT2 COMP2 SW2 IPK2 PVCC1 PVCC2 VOFC+ VOFC- VCC1 VINFC VINSL+ MGND VOSL+ VOSL- MGND VOTK+

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-37 LGE Internal Use Only
Only for training and service purposes
1-2. Pin Description

Pin No. Pin Name Function

1 EN2 Enable pin for buck converter 2

2 CT2 Timing capacitor input 2
3 COMP2 Comparator inverting input 2
4 SW2 Switching output 2
5 IPK2 Current sense 2
6 PVcc1 Vcc for step down converter 1
7 PVcc2 Vcc for step down conveter 2
8 VOFC+ Focus driver output (+)
9 VOFC- Focus driver output (-)
10 Vcc1 Vcc for power block of sled
11 VINFC Input for focus driver
12 VINSL+ Input for the sled driver
13 MGND Ground for motor driver
14 VOSL+ Sled driver output (+)
15 VOSL- Sled driver output (-)
16 MGND Ground for motor driver
17 VOTK+ Tracking driver output (+)
18 VOTK- Tracking driver output (-)
19 MGND Ground for motor driver
20 VOSP+ Spindle driver output (+)
21 VOSP- Spindle driver output (-)
22 VINSP Input for spindle driver
23 VINTK Input for tracking driver
24 Vcc2 Vcc for power block of spindle, tracking and focus
25 PGND Ground for analog ground
26 PGND1 Ground for step down converter 1
27 PGND2 Ground for step down converter 2
28 IPK1 Current sense 1
29 SW1 Switching output 1
30 COMP1 Comparator inverting input 1
31 CT1 Timing capacitor input 1
32 EN1 Enable pin for buck converter 1
33 MUTE Input for mute control
34 BIAS Input for reference voltage

Notes) Symbol of + and - (output of drivers) means polarity to input pin.

(For example, if voltage of pin10 is high, pin11 is high.)

LGE Internal Use Only 3-38 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2. LCD DRIVE IC(T103)
2-1. Pin Assignment

QE23/VDT15/CC_CKO

QE21/VDT13/CC_BOX
QE20/VDT12/CC_R

QE19/VDT11/CC_G
QE22/VDT14/CC_Y

QE18/VDT10/CC_B
CLKO/CLKH

DEN/STH2
VSO/STH1

QE17/sD7
QE16/sD6
QE15/sD5
QE14/sD4
QE13/sD3
QE12/sD2
HSO/POL
VDD33

VDD25

VDD33
GCLK
GOE

GND

GND

GND
LP
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
STV1 76 50 QE11/sD1
STV2 77 49 QE10/sD0
VDT0 78 48 VDD33
VDT1 79 47 QE9/sDEN
VDT2 80 46 QE8/sVSo

TERAWINS
VDT3 81 45 QE7/sHSo
VDT4 82 44 QE6/sUD
VDT5 83 43 QE5/sRL
VDT6 84 42 QE4
VDT7 85 41 VDD25
VCLK 86 40 QE3
LODD/LVSync 87 39 GND
LHREF/LHSync
VDD25
GND
88
89
90
T103 38
37
36
QE2
QE1
QE0
AVDDP 91 35 VDD33
GNDP 92 34 GPIO3/VDT9/CC_VSO
FILT 93 33 GPIO2/VDT17/VDT10/CC_B/AP
VPLL 94 32 GPIO1/VDT11/CC_G/Q1H
AVDDP 95 (Dec. 2005) 31 GPIO0/VDT12/CC_R
GNDP 96 30 PWM3/VDT8/CC_HSO
SOYIN 97 29 PWM2/VDT16/VDT13/CC_BOX
VREF 98 28 PWM1/VDT14/CC_Y
AVDDDAC 99 27 IR1/VDT15/CC_CKO
GNDAC 100 26 XCLK2MC
10

12
13
14
15
16
17
18
19
20
21
22
23
24
25
11
1
2
3
4
5
6
7
8
9
AVDDB
ACB2
ACB1
ACB0
AGNDB
AVDDG
AY2
AY1
AY0
AGNDR
AVDDR
ACR2
ACR1
ACR0
AGNDR
GND
VDD25
VSI
HSI
RSTB
SDA
SCL (SCAN#)
CPUINT (A3)
XTALI
XTALO

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-39 LGE Internal Use Only
Only for training and service purposes
2-2. Pin Description

Symbol Pin# Type Description

Power Supplies
VDD25 17, 41, 66, 89 PWR +2.5V digital core power supply
VD33 35, 48, 61, 73 PWR +3.3V digital output power supply
GND 16, 39, 51, 60, GND Digital ground
70, 90
AVDDB 1 PWR +3.3V analog power supply for ADC channel 2
AVDDG 6 PWR +3.3V analog power supply for ADC channel 1
AVDDR 11 PWR +3.3V analog power supply for ADC channel 0
AVDDP 91, 95 PWR +3.3V analog power supply for PLL
AVDDDAC 99 PWR +3.3V analog power supply for voltage slicer
AGNDB 5 GND Anlog ground for ADC channel 2
AGNDG 10 GND Anlog ground for ADC channel 1
AGNDR 15 GND Anlog ground for ADC channel 0
GNDP 92, 96 GND Anlog ground for PLL
GNDAC 100 GND Anlog ground for voltage slicer
TTL Output Interface Signals
QE0~QE23 36~38, 40, DIO, P/D TTL Output Data :
42~47, 49, 50 1. for 8-bit panel: QE[23:16]=R-channel; QE[15:8]=G-channel;
52~59, 62~65 QE[7:0]=B-channel
2. for 6-bit panel: QE[17:12]=R-channel; Qe[11:6]=G-channel;
QE[5:0]=B-channel; and the QE[23:18] are reserved for other interfaces
HSO 67 DIO, P/D Horizontal synchronization output control signal
VSO 68 DIO, P/D Vertical synchronization output control signal
DEN 69 DIO, P/D Horizontal output data enable signal
CLKO 71 DIO, P/D Output dot clock
Timing Controller Interface Signls
POL 67 DIO, P/D Source driver start pulse
STH1 68 DIO, P/D Source driver start pulse
INVO/STH2 69 DIO, P/D Source driver start pulse
LP 72 DIO, P/D Latch pulse for column driver
GCLK 74 DIO, P/D Gate driver clock
GOE 75 DIO, P/D Gate driver output enable
STV1 76 DIO, P/D Gate driver start pulse
STV2 77 DIO, P/D Gate driver start pulse
Serial RGB Output Interface Signals
sRL 43 DIO, P/D Right/Left control
sUD 44 DIO, P/D Up/Down control
sHSo 45 DIO, P/D sPanel_HSync
sVSo 46 DIO, P/D sPanel_VSync
sDEN 47 DIO, P/D sPanel_DEN
sD0~sD7 49~50, 52~57 DIO, P/D sPanel_Data
CLKO 71 DIO, P/D sPanel clock

LGE Internal Use Only 3-40 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
 Symbol Pin# Type Description

Configuration Interface Signals

SCL (SCANB) 22 DI, P/U 2-wire serial bus clock. Power down does not affect SCL. This pin
should be high when RSTB asserted for entering scan test mode.
SDA 21 DIO, P/U 2-wire serial bus data. Power down does not affect SDA.
CPUINT (A3) 23 DIO Internal Interrupt.
This pin is a reset strap pin I2C device address. When RSTB goes
high, if this pin is high, then default I2C device address is 50h, else 40h.
RSTB 20 DI, P/U Whole chip reset.
ADC Interface
ACB2 2 AI Analog input 2 of channel 2
ACB1 3 AI Analog input 1 of channel 2
ACB0 4 AI Analog input 0 of channel 2
AY2 7 AI Analog input 2 of channel 1
AY1 8 AI Analog input 1 of channel 1
AY0 9 AI Analog input 0 of channel 1
ACR2 12 AI Analog input 2 of channel 0
ACR1 13 AI Analog input 1 of channel 0
ACR0 14 AI Analog input 0 of channel 0
VSI 18 DI RGB Vertical synchronous input
HSI 19 DI RGB Horizontal synchronous input
PLL and Slicer Interface
FILT 93 AI PLL filler
VPLL 94 AI PLL reference
SOYIN 97 AI Sync on Y (of component) input
VREF 98 AI Voltage reference
ITU-R656 Video-In Interface
VDT0~7 78~85 DI, P/D Video data port of ITU-656 or 8-bit 601
VCLK 86 DI, P/D Video clock of ITU-656 or 8-bit 601
CCIR-601 8-bits Video-In Interface
VDT0~7 78~85 DI, P/D Video data port of 8-bit 601
VCLK 86 DI, P/D Video clock of 8-bit 601
LODD/LVSYNC 87 DI, P/D ITU-601 Odd or VSync input
LHREF/LHSYNC 88 DI, P/D ITU-601 HREF(HDE) or HSync input
CCIR-601 16-bits Video-In Interface
VDT0~7 78~85 DI, P/D Video data LSB port of 16-bit 601
VDT8~15 30, 34~31, DIO, P/D Video data MSB port of 16-bit 601 when panel is TTL 8 bits
29~27
VDT8~15 30, 34, 58~59 DIO, P/D Video data MSB port of 16-bit 601 when panel is TTL 6 bits or sPanel
62~65
VCLK 86 DI, P/D Video clock of 16-bit 601
LODD/LVSYNC 87 DI, P/D ITU-601 Odd or VSync input
LHREF/LHSYNC 88 DI, P/D ITU-601 HREF(HDE) or HSync input

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-41 LGE Internal Use Only
Only for training and service purposes
 Symbol Pin# Type Description

RGB565 Video-In Interface

B0~B4 78~82 DI, P/D Video data color-B port of RGB565
G0~G4 83~85, 30, 34 DIO, P/D Video data LSB color-G port of RGB565
G5 33 DIO, P/D Video data MSB color-G port of RGB565 when panel is TTL 8 bits
G5 58 DIO, P/D Video data MSB color-G port of RGB565 when panel is TTL 6 bits or
sPanel
R0~R4 32~31, 29~27 DIO, P/D Video data color-R port of RGB565 when panel is TTL 8 bits
R0~R4 59, 62~65 DIO, P/D Video data color-R port of RGB565 when panel is TTL 6 bits or sPanel
VCLK 86 DI, P/D Video clock of RGB565
LODD/LVSYNC 87 DI, P/D RGB565 Odd or VSync input
LHREF/LHSYNC 88 DI, P/D RGB565 HREF(HDE) or HSync input
RGB666 Video-In Interface
B0~B4 78~83 DI, P/D Video data color-B port of RGB666
G0~G5 84~85, 30, 34, DIO, P/D Video data color-G port of RGB666 (allowable only when panel is
58~59 TTL 6 bits or sPanel)
R0~R5 62~65, 29, 33 DIO, P/D Video data color-R port of RGB666 when panel is TTL 6 bits or sPanel
VCLK 86 DI, P/D Video clock of RGB666
LODD/LVSYNC 87 DI, P/D RGB666 Odd or VSync input
LHREF/LHSYNC 88 DI, P/D RGB666 HREF(HDE) or HSync input
PLL Reference Clock
XTALI 24 DI Output PLL reference clock input and I2C, timer operating clock
XTALO 25 DO Output PLL reference clock output
XCLK2MC 26 DO Buffered XTALI for external microprocessor.
PWM, GPIO and IR Interface Signals
PWM1~3 28~30 DIO, P/D Pulse width modulation 1~3 for backlight control / volume / ...
GPIO0~2 31~33 DIO, P/D GPIO port 0~2
GPIO3 34 DIO, P/U GPIO port 3
IRIN 27 DIO, P/U Infra Red decoder input
CC/Ext_OSD Mixer Interface Signals
CC_Y/R/G/B, 28, 31~33, 29 DIO, P/D The input color and the active window (BOX) of closed caption
CC_BOX or external OSD Mixer when (panel is TTL 8 bits and digital video
input is ITUR656 or CCIR601_8 bits) or (panel is TTL 6 bits and
digital video input is CCIR601_16 bits or RGB565)
CC_Y/R/G/B, 64, 62, 59~58, DIO, P/D The input color and the active window (BOX) of closed caption or
CC_BOX 63 external OSD Mixer when panel is TTL 6 bits and or sPanel digital
video input is ITUR656 or CCIR601_8 bits
CC_HSO, 30, 34 DIO, P/D Position reference ouput for closed caption or external OSD
CC_VSO
CC_CKO 27 DIO, P/D Operation clock output for closed caption or external OSD when panel
is TTL 8 bits and digital video input is ITUR656 or CCIR601_8 bits
CC_CKO 65 DIO, P/D Operation clock output for closed caption or external OSD when
(panel is TTL 6 bits or sPanel) and (digital video input is ITUR656 or
CCIR601_8 bits)

LGE Internal Use Only 3-42 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. VOLUME CONTROLLER IC(PT2257)
3-1. Block Diagram

VDD

LIN 1dB/Step

+
10dB/Ste p - LOUT

+
-
Ref

10dB/Ste p -
+ ROUT

RIN 1dB/Step

Control unit

SDA SCL VSS

3-2. Pin Description

Pin Name I/O Description Pin No.

Left Input Channel
LIN I 1
Connect a Capacitor to Audio Source
Left Output Channel
LOUT O 2
Connect a Capacitor to Audio Output
Vss - Ground 3
SDA I I2C Data Input 4
SCL I I2C Clock Input 5
VDD - Power Supply 6
Right Output Channel
ROUT O 7
Connect a Capacitor to Audio Output
Right Input Channel
RIN I 8
Connect a Capacitor to Audio Source

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-43 LGE Internal Use Only
Only for training and service purposes
4. SPEAKER AMP IC(PT2303)
4-1. Block Diagram

-IN1 -
AMP1N -OUT1
+IN1 +

Shutdown Power
Block
VDD -
AMP1P +OUT1
Vref +
GND

SE/BTL HP-IN

-IN2 -
AMP2N -OUT2
+IN2 +

-
AMP2P +OUT2
+

4-2. Pin Description

Pin No.
Pin Name I/O Description 16 Pins 20 Pins
Shutdown pin Entire IC into the shutdown mode
Shutdown I 1 1
when this pin connected to the Vcc.
GND - Ground 2 2
+OUT1 O Channel 1 output (+) 3 3
VDD - Supply voltage input 4 4
-OUT1 O Channel 1 output (-) 5 5
-IN1 I Channel 1 input (-) 6 6
GND - Ground 7 7
+IN1 I Channel 1 input (+) 8 8
+IN2 I Channel 2 input (+) 9 13
Vref I Bias reference bypassing 10 14
-IN2 I Channel 2 input (-) 11 15
-OUT2 O Channel 2 output (-) 12 16
VDD - Supply voltage input 13 17
+OUT2 O Channel 2 output (+) 14 18
GND - Ground 15 19
Output mode select, connected to the VDD for SE
HP-IN I 16 20
mode or GND for BTL mode
NC - No Connect - 9~12

LGE Internal Use Only 3-44 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
5. MICOM IC(GT6319)
5-1. Block Diagram

AD_BATT VCC GND RST OSC

MCS Temp. sampliing VDD GND RESET OSC IN

SPI Module

MSDI
IR IN IR_DA

Central Controler
MSDO
Wakeup Input PIE
MCLK

Touch screen interface CMSDA

Charge Control
LED Driver

RED
CMCLK
GRN

Key Input Samp AD_K2

AD_BATU Bat Voltage Samp.

AD_CHGI Bat Current Samp. AD_K1

AD_PR Adapter Voltage Samp. PWM Out Vref Input Control signals out

PWM VREF PR_CTL1 PR_CTL2

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-45 LGE Internal Use Only
Only for training and service purposes
5-2. Pin Description

Pin No. Designation Description

1 RED Red led port

2 GRN Green led port
3 CMSDA Touch screen interface data line
4 CMCLK Touch screen interface clock line
5 NC For expansion
6 MCS SPI Module CS port
7 PWM PWM out
8 PR CTL1 Export control line 1
9 RST Reset port
10 GND GND
11 AD_BATU Battery Voltage sampling port
12 AD_CHGI Charge current sampling port
13 AD_BATT Bat temperature sampling port
14 AD_K1 Keyswitch identification port 1
15 AD_K2 Keyswitch identification port 2
16 AD_PR Adapter checking port
17 NC For expansion
18 NC For expansion
19 VCC Chip power
20 OSC External clock input
21 PR_CTL2 Export control line 2
22 VREF 2.495V Precision reference voltage
23 PIE Chip sleep awaken port£¨active falling edge
24 MCLK SPI Module Clock port
25 MSDO SPI Module Data out port
26 MSDI SPI Module Data in port
27 NC For expansion
28 IR_DA Infrared input port

LGE Internal Use Only 3-46 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
 INTERFACE DIAGRAM
MAIN <---> LCD PCB INTERFACE

J701
701 J803
803 J702
702 J802
802
18 STVRD 1 STVRD 20 GND 1 GND
17 STVLD 2 STVLD 19 G0D 2 G0D
16 OEVD 3 OEVD 18 GND 3 GND
15 CKVD LCD 4 CKVD 17 GND 4 GND
14 OEHD 5 OEHD 16 G1D 5 G1D
13 CLKD Control 6 CLKD 15 GND 6 GND
LCD
12 STHLD signal 7 STHLD 14 G2D 7 G2D
11 STHRD 8 STHRD 13 G3D RGBData 8 G3D
10 POLD 9 POLD 12 B5D 9 B5D
9 10 U/DD 11 B4D signal 10 B4D
U/DD
8 R5D 11 R5D 10 B3D 11 B3D
7 R4D 12 R4D 9 B2D 12 B2D
6 R3D 13 R3D 8 B1D 13 B1D
5 R2D
LCD 14 R2D 7 B0D 14 B0D
6 GND 15 GND
4 R1D RGBData 15 R1D
5 R/L 16 R/L
3 R0D 16 R0D
2 G5D
signal 17 G5D
4 LED_R 17 LED_R
1 G4D 18 G4D
3 LED_G Key PCB 18 LED_G
2 IR 19 IR
1 K2 signal 20 K2

J703
703 J801
801 Main PCB
Ma CB
12 VGH LCD 1 VGH
11 VGL GAMMA 2 VGL 1 2
20
10 VLC 3 VLC
9 VLC
signal 4 VLC
8 LED_POWER 5 LED_POWER
7 LED_POWER
Backlight 6 LED_POWER
6 GND power 7 GND
5 3.3V 8 3.3V 1 18
1
4 3.3V LCD 9 3.3V
3 GND power 10 GND
2 5VA 11 5VA
1 LED_B Key PCB 12 LED_B

1 1
12

LCD
LCD PC
PCB

12 1 20 1 18 1

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-47 LGE Internal Use Only
Only for training and service purposes
 3.3V 3.3V 3.3V

16/32MBit NAND FLASH

256MByte
VCOMO,CPH1/2/3, FLASH 64MBit
3.3V/BAT_OUT 3.3V
STHL/R, STVL/R, MEMORY SDRAM

LGE Internal Use Only

OEH/V,LNR,UND,CKV MOD, CCIR656,
T103 PWRCTL_LCD
LCD PANEL R[ 0..5]G[ 0.. 5] ,B[0.. 5]
LCD DRIVER IC

DISC

A[0..21]
PCE#,PRD#,PWR#
DQ[0..15]

AD[0..7]
MA[0..11], BA[0..1],
CS#,CAS#,RAS#,
WE#,DQM[0..1]
DCLK,DCKE
IO[0..7]/IO[8..15]

CLE, ALE, CE, WE

RE, WP, R/B,
27MHz
XI,XO 1.8V/3.3V

LDO1,LDO2,IOA,V20
SPINDLE PICK SD[1..9], SD-WP[1..2]
M A,B,C,D,E,F,RFO,MDI1/2 3 IN 1 Memory slot
MOTOR UP MS[1..10], SD-CD[1..2]
SLED
TROPEN
MOTOR
LIMIT /AV_JACK_IN
1. OVERALL BLOCK DIAGRAM

DECK MECHANISM
A± 5V
AOUT_L/R
NJM4580M A+5V
SL+, SP+, F+,F-, OPO PT2257
SL- SP- T+,T- OP-,OP+ ZORAN 966LV A_MUTE_SW
Digital Volume IC
M5V V1P4,FOSO,TRSO,FMSO,DMSO,STBY MPEG A+5V SP_L/R+/-

3-48
AM5898N
PT2303 SPK
MOTOR DRIVER
A+5V SP_MUTE SP_L/R-
5VA LD_5V H/P
DC-DC BLOCK1 2F2301P
M5V
CVBS A+5V
3.3V FSAV330
DC-DC BLOCK2
VIDEO_IO_CTL
1.8V
CM1117
BLOCK DIAGRAMS

CVBS_IN

CH_SCS,
BAT_OUT /M_RESET SCLK, SDI
DC_IN SDO USBP,USBM A+5V
STANDBY 5VA
USB JACK
P+ AD_PR
SI4335
PWM
GT6319
AD_U
FDS4435
AD_T
AD_I

BATTERY
AD_K1, RED, A+5V A-5V
IR TPS60400
AD_K2 GREEN
P-
REMOCON Power,
KEY
RECEIVER Charge LED

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

Only for training and service purposes
 M5V
SW A+5V
AC/DC Adapter V inverter
TPS60400 A-5V

Only for training and service purposes

DC-DC 5 VA
Divide AM5898 3.3 VA
AD_P
AD_PR

REG 1.8 V
CM1117

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

2. POWER BLOCK DIAGRAM

REG
CM1117 2.5 V 1.2
1.2V
3.3V
3.3
.3V
- 9.3V LCD
+15V -10V
-10 Panel
15V

3-49
Step up converter +10V D5V
MP1540
-10V
5VA
5V Video
-5V Audio
Step down converter -9.3V 3.3V
3.3
MP2359

5VA
3.3
3.3V System
1.8
1.8V
BAT
AD_I
AD_I
Divide AD_V
AD_V
M5V
load 5V
Servo
PWM
PW SW

LGE Internal Use Only

 LGE Internal Use Only
SD[1..9], SD-WP[1..2] 3.3V
3 IN 1
MS[1..10], SD-CD[1..2] MEMORY CARD
27MHz

USB JACK
5V 1.8V/3.3V 3.3V
USBP,USBM A0~A19,AA20,AA21
16MBit
AD0~AD7 FLASH 2^21*8=16Mbit
3. MPEG BLOCK DIAGRAM

PCE#,PRD#,PWR# MEMORY

SCL
T103
3.3V
LCD DRIVER SDA MA0~MA11,DBA0/1
ZR966LV DQ0~DQ15
64MBit
VID[0..7] MPEG SDCLK,SDCKE 2^14*2^8*16=64Mbit
SDRAM

3-50
PWR_CTL_LCD DCS#,DRAS#,DCAS#
5V DWE#,DQM0,DQM1
AM5898N
MOTOR DRIVER
SCL 3.3V

SDA 16K 2048*8=16KBit

V1P4,FOSO,TRSO EEPROM
FMSO,DMSO,STBY M_REQ
/M_RESET VFD_SCK VFD_RXD 3.3V
IO[0..7]/IO[8..15]
VFD_TXD
5V 256MBYTE
REMOCON 5V NAND
RECEIVER GT6319 CLE, ALE, CE, WE, RE, WP, R/B FLASH
FRONT MICOM MEMORY
KEY1/2

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

Only for training and service purposes
 IM Traverse
Travers e CMS-
SP1CHU
ALPC
CD_LD,DVD_LD
CD_DVD
VR_CD, VR_DVD IC201
201

Only for training and service purposes

PICK ZR966LV
DVD : A,B,C,D,RF
UP CD : A,B,C,D,E,F,RF P-DVD PLAYER
(SOH-DP10U)
VC(2.1V) ONE CHIP
4. DISC BLOCK DIAGRAM

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

FO+, FO-, TR+, TR-

3-51
FOCUS_S, TRACK_S
SLED_S, SPINDLE_S

Sled
Sled HOME SW
M5V
Motor
Mo SL-,SL+

IC401 2( A)
2(A) 5V

AM5898N Voltage -5V

Spi dle
Spindle SP-,SP+ Motor Driver Inverter
Motor
Mo TPS604
TPS 60400
00
2(A)
2( A) 3.3V
3.3

Tray_Open SW Block
4 1 SPINDLE_SENS+ , SPINDLE_SENS_

Door Closed
3 2
SW PUSHBUTTON

LGE Internal Use Only

 1.8V/3.3V

LGE Internal Use Only

CVBS B1 5V A
ZORAN FSAV330 VIDEO JACK
VIDEO S/W
966 L : AV OUT
VIDEO_IO_CON H : AV IN S B2
MPEG
5. AV BLOCK DIAGRAM

Video ADC

Audio ADC

3-52
L/R +5V/-5V
2CH DAC NJM4580M AUDIO JACK
OP-AMP
5V 5V SP_L+/L-
PT2257 PT2303 SPK
+5V S/W AUDIO S/W SPK AMP
SP_R+/R-
SPK
L : AV OUT
H : AV IN
SP_L+
H/P JACK
/SP_MUTE
SP_R+
H/P JACK

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

Only for training and service purposes
CIRCUIT DIAGRAMS
1. MPEG CIRCUIT DIAGRAM

OFF-PAGE CONNECTION
A+5V
EMC usage
3,4,5 A+5V
3.3V

SPDL_SENS+

SPDL_SENS-
3,4,7 3.3V
3.3V
Important power supplies!

LD_DVD
RF_C

RF_D
RF_A

RF_B

RF_E

RF_F

LD_CD
GND
3,4,5,6,7 GND
SF_CS
POWER I/F C229 C230 C231 C232 C233 C234 C235 C236 C237 C238
SFCS NC NC NC NC NC NC NC NC NC NC
[33pF] [33pF] [33pF] [33pF] [33pF] [33pF] [33pF] [33pF] [33pF] [33pF] MPEG_3.3V
R227 1 2
RAMADD0 1K(NC) <MPEG> L209
3 RAMADD0
RAMADD1 MEMADD2 FB0805
3 RAMADD1 P.ON(3.26V/13mA)
RAMADD2
3 RAMADD2
3 RAMADD3 RAMADD3
Close to Vaddis! DVD_PLAY(3.26V/15mA)
3 RAMADD4 RAMADD4 R235
RAMADD5 FOCUS_S R205 51K L201 FB0805
3 RAMADD5 1K(NC)
RAMADD6 MEMADD1 TRACK_S R202 51K VDDPWM 1 2
3 RAMADD6 3.3V
RAMADD7 TP212 <PWM>
3 RAMADD7
3 RAMADD8 RAMADD8 R234 0(NC) R233 0 SPDL_S R206 22K
RAMADD9 SLED_S R201 51K P.ON(3.26V/2mA) C209
3 RAMADD9
3 RAMADD10
RAMADD10 DVD_PLAY(3.26V/2mA) 1uF C259
RAMADD11 10uF/16V

WP
3 RAMADD11
C202 C203 C201 C247

Debug Boot Setup: 1000pF 1000pF 0.027uF 0.022uF L203 FB0805

RAMDAT0 VDDAFE 1 2
3 RAMDAT0 RAMDAT1 a)Release mode : R233->0ohm, R227->NC, R235->NC
3 RAMDAT1 <AFE>

1
RAMDAT2 C243
3 RAMDAT2 RAMDAT3
b)Debug mode : R234->0ohm, R227->1K, R235->NC R204 0.1uF P.ON(3.26V/1mA) +
3 RAMDAT3
3 RAMDAT4
RAMDAT4 c)Download mode : R233->0ohm, R227->NC, R235->0ohm Changed 3IN1 Detect Port 15.4K(1%) DVD_PLAY(3.26V/120mA) C208 CM207
RAMDAT5 0.1uF 100uF/10V
3 RAMDAT5 d)MP mode : R233->0ohm, R227->NC, R235->NC

2
RAMDAT6 C239 1000pF
3 RAMDAT6 RAMDAT7

SPDL_SENS+

SPDL_SENS-
3 RAMDAT7 RAMDAT8 C240 1000pF RF L205 FB0805

0(NC)
MEMADD0
MEMDAT1

MEMDAT0
3 RAMDAT8

SD_SCLK
MEMRD#
RAMDAT9 VDDDAC 1 2

SD_CMD

MD_DVD
I2C_SDA

RESOUT
I2C_SCL

LD_DVD
3 RAMDAT9

MD_CD
LD_CD
RAMDAT10

SD_D3
SD_D1
SD_D2
SD_D0
C241 <DAC>

RF_D
RF_C
RF_E

RF_B
RF_A
RF_F
3 RAMDAT10 RAMDAT11

RFP
33pF

CD
P.ON(3.26V/91mA)

VC
3 RAMDAT11 RAMDAT12
3 RAMDAT12 RAMDAT13 DVD_PLAY(3.24V/94mA) C210

R237
3 RAMDAT13

VDDPWM
0
RAMDAT14
Close to Vaddis! 0.1uF C260

VDDAFE

VDDAFE

VDDAFE
3 RAMDAT14 RAMDAT15 10uF/16V
3 RAMDAT15

R238
3 PCLK PCLK 1.8V
3 RAMCAS RAMCAS MPEG_3.3V
RAMRAS- L204 FB0805
3 RAMRAS-
RAMWE- VDDPLL 1 2
3 RAMWE- 1.8V
RAMCS1 U203A
3 RAMCS1

1
3 RAMBA RAMBA ZR36966-LV

208
207
206
205
204
203
202
201
200
199
198
197
196
195
194
193
192
191
190
189
188
187
186
185
184
183
182
181
180
179
178
177
176
175
174
173
172
171
170
169
168
167
166
165
164
163
162
161
160
159
158
157
3 RAMDQM RAMDQM C207 +
RAMCKE 0.1uF CM206
3 RAMCKE
100uF/10V

G
VDDP

VDDSAFE

GND1AFE

GNDAFE

K
E

VDDAFE
B
A
VDD1AFE

RFP
MEMRD#
MEMCS0#

SLED-PWM
SPINDLE-PWM
GNDPWM
TRACK-PWM
VDDPWM
FOCUS-PWM
GNDC
VDDC

DVD_LD
CD_LD
DVD_MD
CD_MD

VC

D
C

RFN
GNDREF
RESOUT
VREF

J
MEMDAT[9]
MEMDAT[1]
MEMDAT[8]
MEMDAT[0]

MEMADD[0]
GPIO[63]
GPIO[62]
CARD_DET/GPIO[61]
FCUIOWR#-SD_SCLK/GPIO[60]
FCUIF-SD_SMD/GPIO[59]
FCUIF-SD_D3/GPIO[58]
FCUWAIT#-SD_D1/GPIO[57]
FCURST-SD_D2/GPIO[56]
FCUIRQ-SD_D0/IGPIO[55]

IGPIO[54]
PWMCO[4]/GPIO[53]

2
MARK5
DRAM I/F

SF_CS
3 SF_CS SFDI R203
3 SFDI SFCLK Delete CM202 (100uF/10V)
3 SFCLK 392ohm 1%
3 SFDO
SFDO <1.8V> MEMDAT2 1
2 MEMDAT[2] GNDDACBS2
156
155
Crystal
L206 P.ON(1.82V/252mA) 1.8V MEMDAT3 MEMDAT[10] RSET
U204 3 154 Use it to connect the shell of the crystal with ground.
3.3V AZ1117H-ADJ SMD FB1206 DVD_PLAY(1.82V/282mA) 4 MEMDAT[3] DAC1 153 VDDDAC TP209
MEMDAT4 MEMDAT[11] VDDDAC
4 1 2 5 152
TAB MEMDAT[4] DAC2
FLASH I/F 3
IN OUT
2 6
MEMDAT[12] DAC3
151 TP210 CVBS TP222
ADJ

MEMDAT5 7 150 VDDDAC 2GND

R218 C251 MEMDAT[5] VDDDAC
8 149
SD_SCLK 750 MEMDAT6 MEMDAT[13] DAC4 TP211 OSCOUT C206 22pF
9 148
MEMDAT[6] GNDDAC_D
1

3 SD_SCLK
1

SD_D0 0.1uF 4 SFCS 10 147

3 SD_D0 MEMDAT[14] DAC5
3 SD_D1 SD_D1 + CM201 11 146 OSCIN
SD_D2 100uF/10V SFDO 12 GNDC XIN 145 OSCOUT R211 R209
3 SD_D2 1 3 MEMDAT[7] XO
SD_D3 R219 330 2 SFDI 13 144 VDDPLL 75 1% 75
3 SD_D3 MEMDAT[15] VDDPLL
2

Vaddis 9
SD_CMD 14 143

Crystal2
3 SD_CMD CD 15 VDDC GNDPLL 142 /M_RESET
3 CD AZ1117H-ADJ SMD VDDP RESET#
MEMWR# SFCLK 16 141
3 MEMWR# MEMRD# MEMADD[16] GNDC X201
17 140 C246 R207 2
3 MEMRD# GPIO43 18 MEMCS1# VDDC 139 NC(1000pF) DUPRD1 220K 27MHz
3 GPIO43 MEMADD[15] GPIO[48]/DUPRD1
ZR36966
CARD_CS2 19 138 DUPTD1 3
3 CARD_CS2
20 MEMADD[14] GPIO[47]/DUPTD1 137 DUPRD0
MEMDAT7 21 MEMADD[13] GPIO[46]/DUPRD0 136 DUPTD0
22 MEMADD[12] GPIO[45]/DUPTD0 135 1
/M_RESET MEMADD[11] VDDP OSCIN Cry stal1 C205 22pF
3,6,7 /M_RESET 23 134
24 MEMADD[10] IRRCV 133 GPIO43 R208 75
MEMADD[9] GPIO[43] CARD_CS2
25 132 Add card select port
MEMWR# MEMADD[8] GPIO[42]
26 131
R212 27 MEMWR# GPIO[41] 130 Door_Closed
MEMADD[18] DoorSwitch
3.3V
3.3V
MEMADD17 28
29
MEMADD[17] CD/DVD
129
128
CD_DVD
/DRVSB
Close to Vaddis!
NC MEMADD[7] /DriverMute(DRVSB) VIDEO_IO_CTL
30 127
[0R] MEMADD[6] IGPIO[37] /A_MUTE_SW
31 126
32 GNDC GPIO[36] 125
33 MEMADD[5] GPIO[35] 124 HOMESW
34 MEMADD[4] HOMESW 123 SCLK
35 MEMADD[3] GPIO[33] 122 C258 1uF
R226 R225 MEMADD2 VDDP S/PDIF-OUT CVBS_IN_LCD
36 121
4.7K 4.7K MEMADD1 37 MEMADD[2] ABCLK/GPIO[31] 120 SDO
38 MEMADD[1] ALRCLK/GPIO[30] 119
39 MEMADD[19] VDD-AMCLK 118
USB_DP USBVDD AMCLK/GPIO[29] C257 NC
40 117
I2C_SCL USB_DN 41 USBDP/GPO[68] GNDC 116 AOUT_L-
5,7 I2C_SCL USBDN/GPO[67] AOUT[0]/APWM0-/GPIO[28]
42 115 AOUT_L+ R222
I2C_SDA RAMADD4 USBGND APWM0+/GPIO[27] AOUT_R- L207 0
5,7 I2C_SDA 43 114
RAMADD3 44 RAMADD[4] AOUT[1]/APWM1-/GPIO[26]
113 AOUT_R+ CVBS_IN
RAMADD5 RAMADD[3] APWM1+/GPIO[25] R232 33 VCLK 2.7uH
45 112
RAMADD[5] TCON[4]/GPIO[24] PWRCTL_LCD
46 111
47 VDDIP TCON[3]/IGPIO[23] 110
IIC GNDC GNDC
R224 C255 C256
RAMADD2
RAMADD6
48
49
RAMADD[2] Pin129~134 are 5V tolerant. HSYNC#/GPIO[22]
109
108
75R 1% 330pF 330pF
R223
RAMADD1 RAMADD[6] VSYNC#/GPIO[21] VD7
MEMDAT0 RAMADD7
50
51 RAMADD[1] TFT-CLK1
107
106 VD6
CCIR656 R213
10
NC
3 MEMDAT0 RAMADD[7] PWMCO[5]/GPIO[19]
MEMDAT1 52 105
3 MEMDAT1 VDDC VDDP 3.3V
MEMDAT2

IGPIO[11]/LCDDIG[6]
3 MEMDAT2

1
MEMDAT3
OFF-PAGE CONNECTION

RAMCKE/GPO[66]

VCOM/LCDDIG[0]
3 MEMDAT3

TVDET/IGPIO[18]
MEMDAT4

OEH/LCDDIG[3]
STH/LCDDIG[4]

OEV/LCDDIG[2]
CKV/LCDDIG[1]
+ + + +

STV/LCDDIG[5]
3 MEMDAT4

L12/LCDDIG[7]
MEMDAT5 CM209 CM210 CM205 CM208

RAMADD[10]

RAMADD[11]

RAMDAT[10]

RAMDAT[11]

RAMDAT[12]

RAMDAT[13]

RAMDAT[14]

RAMDAT[15]
3 MEMDAT5

RAMADD[0]
RAMADD[8]

RAMADD[9]
MARK6

RAMDAT[8]
RAMDAT[7]
RAMDAT[9]
RAMDAT[6]

RAMDAT[5]

RAMDAT[4]

RAMDAT[3]

RAMDAT[2]

RAMDAT[1]

RAMDAT[0]
MEMDAT6 220uF/6.3V 220uF/6.3V 220uF/6.3V 220uF/6.3V

GNDPCLK
RAMRAS#
RAMCAS#

VDDPCLK
RAMCS0#

RAMCS1#
3 MEMDAT6

RAMDQM
RAMWE#

2
MEMDAT7 A/V AOUT_L+

RAMBA
3 MEMDAT7 AOUT_L+ 5

GNDC

GNDC

GNDC

GNDC

GNDC
VDDC
AOUT_L-

VDDP

VDDP

VDDP

VDDP

VDDP
PCLK
AOUT_R+ AOUT_L- 5
AOUT_R+ 5
J202 AOUT_R-
MEMADD0 PMUCT0-05FNXXXXX4X1-C USB AB VIDEO_IO_CTL AOUT_R- 5
L202 Close vaddis pin 105
3 MEMADD0 VIDEO_IO_CTL 5
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
MEMADD1 A+5V FB0805 6 /A_MUTE_SW
3 MEMADD1 RAMCS0- USB5V CVBS_IN_LCD /A_MUTE_SW 5
1 2 1 7 CVBS_IN_LCD 7
3 RAMCS0- VBUS
USB_DN R214 27 2 D- CVBS CVBS 5
USB_DP R215 27 3 D+
4 ID CVBS_IN
CVBS_IN 5
5 8
GND
9
R217 R216
15K 15K C244 C228 C245 VID0 VID0 7
0.1uF NC NC VID1
VID1 7
VID2
VID2 7

2
VID3

FB0805
VID3 7
MINI USB I/F VID4

L208
VID4 7
C248 CCIR656 VID5
0.1uF
VID5 7
VID6
VID6 7
1
VID7
56

VID7 7
RAMADD11
RAMADD10

RAMDAT10

RAMDAT11

RAMDAT12

RAMDAT13

RAMDAT14

RAMDAT15
RAMADD0
RAMADD8

RAMADD9

RAMDAT1

RAMDAT0
RAMDAT8 RN202
RAMDAT7
RAMDAT9
RAMDAT6

RAMDAT5

RAMDAT4

RAMDAT3

RAMDAT2
RAMRAS-

RAMDQM
RAMCS0-

RAMCKE
RAMCAS
RAMCS1

RAMWE-
RAMBA

VD7 5 4 VID7 VCLK

VD6 VID6 PWRCTL_LCD VCLK 7
6 3
R210

VID5 PWRCTL_LCD 7
7 2
8 1 VID4 DIGITAL VIDEO OUT

8
7
6
5
PCLK

MPEG_3.3V RES4-33R FOCUS_S

FOCUS_S 4
1

C212 C213 C214 C215 C216 C217 C218 C219 C220 C221 C222 RN201 TRACK_S
0.01uF 0.01uF 0.01uF 0.01uF 0.01uF 0.01uF 0.01uF 0.01uF 0.01uF 0.01uF 0.01uF CM203 C204 RES4-33R TRACK_S 4
+
100uF/10V NC SPDL_S
SPDL_S 4

1
2
3
4
SLED_S
SLED_S 4
2

VID0
VID1
VID2
VID3
MD_DVD
MD_CD MD_DVD 4
LD_CD MD_CD 4
LD_DVD LD_CD 4
VC LD_DVD 4
1.8V VC 4
1

C242 C224 C225 C226 C227 RF_F

0.01uF 0.01uF 0.01uF 0.01uF 0.01uF + CM204 SPDL_SENS+ RF_F 4
3.3V
100uF/10V RF_E SPDL_SENS+ 4
SPDL_SENS- RF_E 4
2

RF_D SPDL_SENS- 4
TP208 TP204 RF_C RF_D 4
TP207 DUPTD0 TP203 DUPTD1 RF_B RF_C 4
TP206 DUPRD0 TP202 DUPRD1 RF_A RF_B 4
TP205 TP201 RF_A 4
RF
RF 4
HOMESW
HOMESW 4
Door_Closed
Door_Closed 4
Place de-coupling capacitors close to power pins. CD_DVD
/DRVSB CD_DVD 4
/DRVSB 4

UART SCLK
SDO
SCLK 6
SDO 6

WP WP 3
02.MPEG
Friday , February 15, 2008

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-53 3-54 LGE Internal Use Only
Only for training and service purposes
2. MEMORY CIRCUIT DIAGRAM

OFF-PAGE CONNECTION

M5V M5V 2,4,5

<NAND FLASH> 3.3V
3.3V 2,4,7
P.ON(3.25V/3mA) GND
SDRAM3.3V SDRAM3.3V GND 2,4,5,6,7
DVD_PLAY(3.25V/3mA) L302 FB0805 Place de-coupling capacitors close to power pins.
3.3V 1 2 FCVCC33 POWER I/F
R301 R306 L301 FB0805
10K NC SDRAM3.3V 1 2 3.3V
R302 C320 C307 C308 C309 C318 C319 <SDRAM>
0(NC) C317 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF C312 C316 C303 C304 C305 C310 C311 RAMADD0
RAMCKE 10uF/16V 1000pF 10uF/16V 0.1uF 0.1uF 0.1uF 1000pF 1000pF
P.ON(3.25V/10mA) RAMADD1
RAMADD0 2
DVD_PLAY(3.25V/10mA) RAMADD1 2
RAMADD2
RAMADD2 2
RAMADD3
RAMADD3 2
C301 C302 RAMADD4
RAMADD4 2
NC NC RAMADD5
RAMADD5 2
RAMADD6
RAMADD6 2
RAMADD7
RAMADD7 2
RAMADD8
RAMADD8 2
RAMADD9
RAMADD9 2
RAMADD10
RAMADD10 2
RAMADD11
RAMADD11 2

RAMDAT0
RAMDAT1 RAMDAT0 2
RAMDAT2 RAMDAT1 2
RAMDAT2 2
SDRAMCKE

RAMDAT3
RAMADD11
RAMDAT15

RAMDAT14
RAMDAT13

RAMDAT12
RAMDAT11

RAMDAT10

RAMDAT3 2
RAMADD9
RAMADD8
RAMADD7
RAMADD6
RAMADD5
RAMADD4
RAMDAT9

RAMDAT8

RAMDQM

RAMDAT4
RAMDAT4 2
RAMDAT5
PCLK

RAMDAT6 RAMDAT5 2
SDRAM3.3V RAMDAT7 RAMDAT6 2
RAMDAT7 2
RAMDAT8
RAMDAT8 2
RAMDAT9
RN304 RAMDAT10 RAMDAT9 2
330Rx4 RAMDAT11 RAMDAT10 2
48
MEMDAT7 NC RAMDAT12 RAMDAT11 2
5 4 44 47
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28

MEMDAT6
I/O7 NC RAMDAT13
RAMDAT12 2
6 3 43 46 RAMDAT13 2
U302 MEMDAT5 I/O6 NC RAMDAT14
7 2 42 45
VSS

VSS

CLK
CKE

VSS
N.C
DQMH
VSSQ

VDDQ

VSSQ

VDDQ
DQ15

DQ14
DQ13

DQ12
DQ11

DQ10
DQ9

16X16 DQ8

A12
A11
A9
A8
A7
A6
A5
A4

HY57V641620ETP-7-C MEMDAT4 I/O5 NC RAMDAT15 RAMDAT14 2

8 1 41 40
MEMDAT3 I/O4 NC RAMDAT15 2
8 1 32 39
MEMDAT2 I/O3 NC RAMCS0-
7 2 31 38 RAMCS0- 2
MEMDAT1
I/O2 NC PCLK
6 3 30 35 PCLK 2
MEMDAT0 I/O1 NC RAMCAS
5 4 29 34 RAMCAS 2
I/O0 NC RAMRAS-
33 RAMRAS- 2
NC
VDDQ

VDDQ

RAMWE-
DQML

28
VSSQ

VSSQ

RN303 NC RAMWE- 2
VDD

VDD

VDD
DQ0

DQ1
DQ2

DQ3
DQ4

DQ5
DQ6

DQ7

CAS
RAS

BA0
BA1
A10

330Rx4 27 RAMCS1
WE

CS

A0
A1
A2
A3

NC RAMCS1 2
/M_RESET 19 26 RAMBA
WP NC RAMBA 2
18 25 RAMDQM
WE NC RAMDQM 2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27

17 23 RAMCKE
ALE NC RAMCKE 2
SM_WE# 8 1 16 24
CLE NC
MEMADD0 7 2
NC
22 DRAM I/F
MEMADD1 6 3 21
SM_OE# NC
5 4 20
NC
36 15
RAMADD10

RAMADD3

VSS NC
RAMDAT0

RAMDAT1
RAMDAT2

RAMDAT3
RAMDAT4

RAMDAT5

RAMDAT7

RAMADD0
RAMADD1
RAMADD2
RAMDAT6

RAMDQM

RAMRAS-

RAMCS0-

13 14
RAMCS1
RAMCAS
RAMWE-

RN308 VSS NC
RAMBA

330Rx4 11
FCVCC33 NC SFDO
37 10 SFDO 2
VCC NC SFCLK
12 6 SFCLK 2
VCC NC SF_CS
5 SF_CS 2
SD_CMD R321 NC NAND_CE# NC SFDI
9 4 SFDI 2
CE NC
8 3
NAND_BSY#
RE NC
FCVCC33 7 2
R/B NC
R322 0
NC
1 Serial FLASH I/F
8
7
6
5

RN305 SD_D0 R319 NC SD_DAT0 U303 MEMDAT0

MEMDAT0 2
10Kx4 HY27UF2G2A MEMDAT1 MEMDAT1 2
MEMDAT2 MEMDAT2 2
CARD_DAT0 R320 0 MEMDAT3 MEMDAT3 2
MEMDAT4 MEMDAT4 2
1
2
3
4

MEMWR# R313 300 SM_WE# MEMDAT5

Q301 MEMDAT5 2
MEMRD# R314 300 SM_OE# MEMDAT6
2N7002 MEMDAT6 2
CD R311 33 CD_INS MEMDAT7 MEMDAT7 2
SD_D0 3 2 CARD_DAT0
D

R316 33 FCVCC33
S

N-CHANNEL
GPIO43 R312 33(NC) MS_INS M5V
1G

MEMWR#
MEMWR# 2
J301 MEMRD#
MEMRD# 2
R318 4.7K R303 R009-03X-XX MEMADD0
MEMADD0 2
10K SDDAT0 2 MEMADD1
FCVCC33 SD_DAT0 MEMADD1 2
CARD_CS2 SDDAT1 1
SDDAT2 SD_DAT1
Card Detect 19
SD_DAT2
8
7
6
5

SDDAT3 17
SD_DAT3
RN301 NAND FLASH I/F
10Kx4 R317 75 NAND_BSY# SD_SCLK R315 33 6
SD_CMD SD_CLK
14
SD_CMD
WP 20
SD_WP_SW
1
2
3
4

CD_INS 21 SD_SCLK
SD_CD_SW SD_SCLK 2
22 SD_CMD
SD_WP/CD COM SD_CMD 2
FCVCC33 23
SD_WP/CD COM SD_D0 SD_D0 2
8
7
6
5

9 SD_D1 SD_D1 2
FCVCC33 SD_VCC
SD_CMD RN302 3 SD_D2 SD_D2 2
SD_GND SD_D3
10Kx4 11 SD_D3 2
SD_GND
WP SD GPIO43 GPIO43 2
CD CD 2
16 WP
FCVCC33 MS_VCC WP 2
1
2
3
4

18 MS /M_RESET
MS_GND CARD_CS2 /M_RESET 2,6,7
4
RN306 MS_GND CARD_CS2 2
75Rx4 CARD_DAT0 8
MS_DATA0 3IN1 CARD I/F
FCVCC33 7
SD_D0 SD_D1 SDDAT1 MS_DATA1
8 1 10
SD_D2 SD_D3 SDDAT3 MS_DATA2
7 2 13
SD_D1 SD_D2 SDDAT2 MS_DATA3
6 3
SD_D3 SD_DAT0 5 4 SDDAT0 15
MS_INS MS_SCLK
12
C313 C314 C306 C315 SD_CMD MS_INS
5
MS_BS
33pF(NC) 33pF(NC) 33pF(NC) 33pF(NC)

FCVCC33
Serial Flash Block
FCVCC33
FCVCC33 U305
AT26DF161A R307
SF_CS 1 8 4.7K
SFDI CE# Vcc R304 4.7K
2 7
4.7K R305 SO HOLD# SFCLK
3 6
WP# SCK
4
GND SI
5 SFDO
03.MEMORY
Friday, February 15, 2008

LGE Internal Use Only 3-55 3-56 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. OPU & MOTOR CIRCUIT DIAGRAM

BAT_OUT

3.3V R405 M5V

27K
C422 0.1uF

3
E
M5V R445 33K Q407
R453 10K 1 2N3906
B
R443 1K 1% R444 1K 1% CT1

2
R447 10K
C
C

2
C423 0.1uF 1B Q409
BAT_OUT 2N3904
E

3
R450 1.2K 1% R426 R422 2 2
R402 20K 51K 6.8K C C
R407 2K 1% R408 0
L408 BAT_OUT U401 R448 10K 1 B E3 1 B E3
3.3V L407 FB(1206) 47uH/SLF7045 C415 AM5898N
1 2 Q401
R409
1000pF 1
EN2 BIAS
34 SMBT3904 SMBT3906

2
D401 D AO3409 750 C416 68pF 2 33 /DRVSB R410 10K R411 1.2K 1%
C418 R413 CT2 MUTE
+ 3 32
0.1uF CM410 G1 680K R415 15 COMP2 EN1 CT1 C417 68pF R416 100 R418 3.6K 1%
4 31
100uF/16V SS24 SW2 CT1 R423 10K R420 680K
S 5 30
IPK2 COMP1

3
R427 0.1 1% 6 29 R429 15
PVCC1 SW1

1
7
PVCC2 IPK1
28 R430 0.1 1% BAT_OUT <5VA>
F+ 8 27
VOFC+ PGND2 P.OFF(5.05V/10mA)

3
S
F- 9 26 1
BAT_OUT TP405 VOFC- PGND1 R431
G
Q410 P.ON(5.04V/58mA)
TP406 Q402 VCC
2 M5V 35
GND GND
36 M5V
C419 AO3409 L409 5VA DVD_PLAY(5.04V/268mA)
AF2301P

1
D C420 47uH/7032 L410 FB(1206) L404 FB(1206)
D

2
CM411 + 0.1uF 10 25 1 2 3 2 1 2

D
VCC1 PGND

S
1 G S3 47uF/25V FOCUS_S R433 0 11
VINFC VCC2
24 750 1000pF C411

1
SLED_S R432 0 12 23 TRACK_S C408 R439 0.1uF(NC) C409
VINSL+ VINTK BAT_OUT

G
AO3409 13
MGND VINSP
22 R434 0 SPDL_S + C421 0.1uF 20K

1
1
SL+ 14 21 SP- D402 0.1uF 0.1uF
VOSL+ VOSP- Q415
SL- 15 20 SP+ CM413 + SS24 CM412
VOSL- VOSP+ 2N3904

2
16 19 47uF/25V 100uF/16V R437 C R438
MGND MGND

1
T+ 17 18 T- STANDBY 1B 20K
VOTK+ VOTK-

2
C410 5.1K E C403

3
0.1uF 1uF

VCC

M5V <Motor>
<S3.3V> P.ON(5.03V/1mA)
3.3V
P.ON(3.26V/0mA) S3.3V
L406 DVD_PLAY(4.98V/200mA)
DVD_PLAY(3.26V/50mA) 1 2
1 2

1
1 LD-GND
L411
FB0805 +
FB0805
+ C432 C431 C438 OFF-PAGE CONNECTION
2 DVD-LD CM421
3 CD-LD C426 CM415 100uF/10V 0.1uF 0.1uF 0.1uF

2
4 PD 0.1uF 47uF/16V M5V
M5V 3
5 N.C 5VA
5VA 5,6,7
6 N.C A+5V
A+5V 2,5
7 DVD-VR 3.3V
3.3V 2,3,7
8 CD-VR
9
10
RF
A4
Very Important to <A+5V>
GND
11 A3 reduce Noise VCC
P.ON(5.03V/27mA) GND 2,3,5,6,7
L412 DVD_PLAY(5.03V/27mA)
12 SW A+5V TP401
13 A2 1 2
14 A1 FB0805 <MD_5.0V> 1 2 A+5V
1

15 E1 L403 BAT_OUT
P.ON(5.03V/10mA) BAT_OUT 6,7

1
16 N.C. + CM416 FB0805 VC
VC 2
17 Vc C427 DVD_PLAY(5.03V/23mA) + CM403
18 Vcc 100uF/10V 0.1uF C435 47uF/16V
2

19 E2 0.1uF /DRVSB
/DRVSB 2

2
20 GND STANDBY
STANDBY 6
21 T+
22 T-
23 F+ TRACK_S
TRACK_S 2
24 F- SPDL_S
SPDL_S 2
FOCUS_S
FOCUS_S 2
SLED_S
SLED_S 2
Tray_Open_SW
J401
SPDL_SENS+
SPDL_SENS+ 2
1 LD_GND 3.3V SPDL_SENS-
SPDL_SENS- 2
2 DVD_LD
3 CD_LD 2SB1132 SW402
2

4 MPU11190MLB7
5 C437 1000pF 1 R446 220 LD_DVD R419
2

6 Door_Closed 1 2 HOMESW
HOMESW 2
7 DVD_VR Q411 C440 CM417 3 4 Door_Closed
Door_Closed 2
3

+
8 CD_VR C436 1000pF 0.1uF 47uF/16V 1K
9 RF R421 3.3
1

10 RF_B S3.3V C434 LD_CD

LD_CD 2
26 11 RF_C TP404 VCC R428 C433 LD_DVD
LD_DVD 2
25 12 CD_DVD R424 3.3 10K 0.1uF CD_DVD
CD_DVD 2
1

13 RF_D R451 3.3K 0.1uF MD_DVD

MD_DVD 2
14 RF_A
RF_F
Current Limit C441
0.1uF
+ CM418
47uF/16V
MD_CD
MD_CD 2
15
3

16
2

17 R442 33 VC 1 LD_CD RF_A

RF_A 2
18 Q414 R449 220 RF_B
RF_B 2
19 RF_E 2SB1132 RF_C
RF_C 2
2

20 PD_GND RF_D
2 RF_D 2
21 T+ C430 RF_E
RF_E 2
22 T- 0.1uF C RF_F
RF_F 2
23 F+ RF
1 3 RF 2
24 F-
B C E
CON24_0.5MM 2SB1132 DVD_VR R401 0 MD_CD SERVO I/F
CMS-SP1CH R436
SPDL_SENS+ CD_VR R403 0 MD_DVD

2K D403
BAT54C
3 3.3V

Traverse Deck 2
3.3V
1 SP- 1
2 SP+
3 LIMIT
4 GND R454 R435
5 SL- 10K SPDL_SENS-
6 SL+
2K

6 SP-
5 SP+
4 HOMESW R412 1(2012)
3
2 SL-
1 SL+ C439

J402
CON6_1.5MM_DIP_B
1000pF(NC)

04.OPU & MOTOR

TOP Friday, February 15, 2008

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-57 3-58 LGE Internal Use Only
Only for training and service purposes
4. AV CIRCUIT DIAGRAM

A+5V
C523 L509
U509 10uF/16V AUDIO5V 1 2
C521 PT2257
L_SPEAKER 1 8 R_SPEAKER R541 U502 FB0603
LIN RIN

1
2 7 56 PT2303 C519

13
LOUT ROUT

4
3 6 AUDIO5V 0.1uF + CM509 A+5V
10uF/16V VSS VDD SP_L- 100uF/10V
4 5

VDD

VDD
SDA SCL

1
C541

I2C_SDA

I2C_SCL

2
+ 1 5 SP_L-
0.1uF CM510 R519 R521 Shutdown -OUT1
220uF/6.3V NC C528 33K 3 SP_L+ R507 R508
+OUT1

2
10uF/16V C536 100K 100K
R502 10K 6 680pF R514
-IN1
PT2303 16
100K
HP-IN

2
R523 10K 11 C 2N3904
-IN2 C512 B1
C520 14 0.1uF
R504 10uF/16V R542 +OUT2 E Q511

3
NC 33K 12 SP_R-
-OUT2
8
SP_R- +IN1
9

GND1
GND2
GND3
AUDIO5V +IN2 C537
10
VREF 680pF
A+5V

2
R564
L502

2
7
15
FB0603 NC R565 R559
D501
1 2 NC C539 100
10uF/16V LL4148

1
A_MUTE
C540 C506
10uF/16V 0.1uF

CM506
U501 100uF/10V L503 600 ohm FB TP508

16
C530 FSAV330 TP501 JP_ST-35061
100pF SP_L- 1 2 R534 R539 1 2 2

+
VCC
CVBS_IN 14 100 100 3
4B1 L504
<-- 11 ST-066 TP506 CM502 4
3B1 <--> SP_R- R511 R550
5 12 1 2 1 2 5

+
L505 2B1 4A 100 100
2 9 6
1.8uH 1B1 3A 100uF/10V 600 ohm FB PHONEJACK
7 4 5 1
CVBS 2A 4 5 R518 R546 R517 R506
13 4 J502
4B2 1A

2
--> 10 3 1K 1K 1K 1K
3B2 Q518 3
6
2B2 C532 C533 TP507
3 BAT54S 2
C505 C502 1B2 C522 2 3300pF 3300pF
15
GND

100pF 100pF VIDEO_IO_CTL

OE ESD(15pF) C531
1 1 6
L:AV IN S 56pF 1 6
Q506
H:AV OUT
8

2
2N3904 C TP505

3
A-5V J504 R513 1B L506 600 ohm FB JP_ST-35061
4.7K R551 1 2 2
R544 E 100 3

3
47K L510 4
R538 R552 1 2 5
0 Q505 100 6

3
2N3904 600 ohm FB
E
1 PHONEJACK
AV-5V C510 A_MUTE R501 1 J503
B
47pF R532 4.7K
R524 15K
C
C534 C535

2
C518 15K R_SPEAKER 3300pF 3300pF TP504
0.1uF AV-5V
Q504

3
E
2N3904
R528 R531 1
4

B
R516 2.2K R510 4.7K
L507
C514 330
C
AOUT_R- 2 -

2
1 1 2
47K 3 + 0603-120 ohm PB
C507 Q502
10uF/16V 2N3904

2
U504A C
8

R522 1200pF NJM4558 R566 R563 R533 1B

AOUT_R+ NC C503 C504 100K 4.7K
AMP+5V 820pF 680pF E

3
47K R525 Q514
C508 47K R509 R553 2N3904
2

160pF 47K 4.7K C

A_MUTE 1B
J501
E CON2_1.25MM
3

C516 SP_L+ 2
47pF R535 4
R520 15K SP_R- 1 3
15K L_SPEAKER
AV-5V

R547
4

R505 2.2K R530

L508
AOUT_L- 6 - C517 330
7 1 2
47K C525 5 +
0603-120 ohm PB
1200pF U504B 10uF/16V
8

R512 NJM4558 R567

AOUT_L+ NC R562
AMP+5V C509 C526 100K
47K 820pF 680pF AMP+5V
C524
R515
47K
Q507
2N3904
1 5 OFF-PAGE CONNECTION
2

160pF R554 C
A_MUTE 4.7K 1B 2
2

5VA
5VA 4,6,7
E L512 3 4 L511 A+5V
TP502 A+5V 2,3,4
3

FB0603 TPS60400 10uH

A+5V 5VA A-5V GND
GND 2,3,4,6,7
1

U503
TPS60400
TP503
L501 1
OUT POWER I/F
10uH 5
A+5V CFLY+
3 2 2
C

IN
E

R543 R537 Q519 4 C515

GND CVBS
10K 10K R561 2N3906 C511 3 10uF/16V CVBS 2
CFLY-
B

10K 10uF/16V CVBS_IN

CVBS_IN 2
1

C513 1uF
R558 AOUT_L-
AOUT_L- 2
3

E
R545 10K AOUT_L+
2N3906 AOUT_L+ 2
10K 1 B Q512 Q510 AOUT_R-
2N3904 AOUT_R- 2
2

C
C AOUT_R+
AOUT_R+ 2
2
2

C A_MUTE VIDEO_IO_CTL 1B
1B Q509
R557 Q508 R560 E /A_MUTE_SW
2N3904 /A_MUTE_SW 2
3
2

1K C E 2N3904 L:AV IN 1K
3

/A_MUTE_SW 1B H:AV OUT VIDEO_IO_CTL

VIDEO_IO_CTL 2
E I2C_SDA
I2C_SDA 2,7
3

2 2 I2C_SCL
I2C_SCL 2,7
C C
MPEG I/F
1 B E3 1 B E3
SMBT3904 SMBT3906
05.AV
Friday, February 15, 2008

LGE Internal Use Only 3-59 3-60 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
5. CHARGE CIRCUIT DIAGRAM

IR
U603 D605
J604 D606 TP620 GT6319 LL4148
DC-030 SS5822 LED_R 1 28 2 1 5VA
BAT_OUT LED_G RED IR-DA LED_B
1 DC_IN 1 2 2 27
GRN NC1 R627
3 3 26
CMSDA MSDI

1
2 C613 SDA_GT 4 25 20K R632 5VA
POWERJACK 0.1uF SCLK_1 CMCLK MSDO 100K
+ 5 24 R631

ACGND
C615 NC2 MCLK R630

1
R652 CM605 C614 R639 SCLK_2 6 23
TP618 MCS PIE 1K 4.7K
5
4

120K 1% CM606 + 47uF/25V 0.1uF 0.1uF 10K PWM 7 22

PWM VREF

2
TP619 47uF/25V /M_RESET 8 21 R640 1K STANDBY
PR-CRT1 PR-CTL2 R629 9.53K 1%
9 20
RST OSC

2
AD_PR 10 19 C608 C620
C631 R658 AD_U GND VCC 0.1uF 0.1uF
11 18
AD_BATU NC4

1
1uF 20K AD_I 12 17 C607 U602
AD_T AD_CHG1 NC3 AD_PR 0.1uF + CM607
13 16 KA431 0.5%
0805-10uH

0805-10uH

0805-10uH

C616 R653 AD_K1 AD_BATT AD_PR AD_K2 100uF/10V

14 15
0.1uF 39K 1% AD_K1 AD_K2

2
5VA
L605

L606

L607

R620
1 2 51K 5VA

D603 R628 Change BATT CON

LL4148 51K R607
C606 10K 1%

1
1000pF C611 P+ 1
0.1uF SW610 2
RESET 3
R641
1K 4
AD_T 5 12
6

2
7 11
8
C609 9
0.1uF P- 10
D604
SS5822 U601 CON10_0.8MM
1 2 APM4953Kb1 J605
F601 TP609 1 8
FUSE[1206-2A] S1 D1 TP612
2 7
G1 D1
1 2 3 6
S2 D2

2
Q601 C 4 5 TP610
2N3904 1 B G2 D2
D601
1

SS5822 R610

2
+ E L602
10K

1
CM608 C619 R614 100uH TP611 R615 C617
47uF/25V 0.1uF 10 D602 + + R611 R612 1K 0.1uF
2

AD_I
R621
TP613 SS5822 CM603
100uF/16V
CM604
100uF/16V
150K 1% NC
OFF-PAGE CONNECTION

2
AD_U
10K
R633 R617 R618 R626
C618
3

E
51 R622 0.15 1W 0.15 1W 0.15 1W 5VA
C601 R642 0.1uF BAT_OUT 5VA 4,5,7
1 NC BAT_OUT 4,7
B Q602 0.1uF 51K 1% STANDBY
C STANDBY 4
2N3906
2

GND
J601 TP614 GND 2,3,4,5,7
CON2_1.0MM R623
2 2K
2

4 C POWER I/F
3 1 K1 Q603 B1 5VA 5VA 5VA
2N3904 TP615
E IR
IR 7
3

R625 PWM R619 R613 R606 LED_R

LED_R 7
3.6K(1%) 51K 51K 10K LED_G
R624 LED_B LED_G 7
10K R634 2K
SDA_GT SDO K2 LED_B 7
K2 7

R635 10K KEY I/F

SCLK_2 SCLK

5VA /M_RESET
SCLK_1 /M_RESET 2,3,7
SCLK
SCLK 2

2
C SDO
R636 10K SDO 2
B1
Q604
R609 R608 2N3904 E MPEG I/F

3
10K 1% 10K 1%

K1 R643 1K AD_K1
K2 R644 1K AD_K2

C612 C610
0.1uF 0.1uF

06.CHARGE
Friday, February 15, 2008

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-61 3-62 LGE Internal Use Only
Only for training and service purposes
6. MAIN KEY CIRCUIT DIAGRAM

MAIN KEY <--> GT6319

J101 R101 R102 R103 R104 R105 R106 R107 R108
CON2_1.0MM 1.2K 1% 1.5K 1% 2K 1% 3K 1% 4.7K 1% 8.2K 1% 15K 1% 39K 1%
2 K1 K1
4
3 1

2
4

2
4

2
4

2
4

2
4

2
4

2
4

2
4

2
4
VOL+
MENU
POWER

LCD MODE
DISPLAY

COLOR_BRIGHT
G

G
SETUP

MODE
SW101

SW102

SW103

SW104

SW105

SW106

SW107

SW108

SW109
VOL-
G

G
1
3

1
3

1
3

1
3

1
3

1
3

1
3

1
3

1
3
10. MAIN KEY
Friday, February 15, 2008

LGE Internal Use Only 3-63 3-64 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
CIRCUIT VOLTAGE CHART
1. IC VOLTAGE CHART
MODE MODE
PIN NAME PIN DESCRIPTION VOLTAGE SPEC PIN NAME PIN DESCRIPTION VOLTAGE SPEC
PIN. NO. PIN. NO.
U201(ZR966LV) U504 (TJM4558M)
14 VDDC 1.8 V Digital core power supply 1.865V 1.7V < Vcc < 1.9V 4 AV-5V supply voltage -4.8V +/- 22V
15 VDDP 3.3 V Digital periphery power supply 3.295V 3.135V < Vpp < 3.465V 8 AMP+5V supply voltage 4.92V +/- 22V
35 VDDP 3.3 V Digital periphery power supply 3.295V 3.135V < Vpp < 3.465V U509 (PT2257)
39 VDDUSB 3.3 V USB power supply 3.295V 3.135V < Vpp < 3.465V 6 Audio5V supply voltage 4.99V 4V ~ 10V
46 VDDP 3.3 V Digital periphery power supply 3.295V 3.135V < Vpp < 3.465V U603 (GT6319)
52 VDDC 1.8 V Digital core power supply 1.86V 1.7V < Vcc < 1.9V 19 VCC chip power 5.05V 4.5V ~ 5.5V
56 VDDP 3.3 V Digital periphery power supply 3.295V 3.135V < Vpp < 3.465V U701 (T103)
65 VDDP 3.3 V Digital periphery power supply 3.295V 3.135V < Vpp < 3.465V 1 AVDDB +3.3V analog power supply for ADC channel 2 3.29V 3.0V - 3.3V - 3.6V
71 VDDPCLK 3.3 V filtered digital power supply for PCLK 3.295V 3.135V < Vpp < 3.465V 6 AVBBG +3.3V analog power supply for ADC channel 1 3.29V 3.0V - 3.3V - 3.6V
76 VDDP 3.3 V Digital periphery power supply 3.295V 3.135V < Vpp < 3.465V 11 AVDDR +3.3V analog power supply for ADC channel 0 3.29V 3.0V - 3.3V - 3.6V
84 VDDP 3.3 V Digital periphery power supply 3.295V 3.135V < Vpp < 3.465V 17 VDD25 +2.5V digital core power supply 2.39V 2.25V - 2.50V - 2.75V
88 VDDC 1.8 V Digital core power supply 1.86V 1.7V < Vcc < 1.9V 35 VDD33 +3.3V digital output power supply 3.29V 3.0V - 3.3V - 3.6V
93 VDDP 3.3 V Digital periphery power supply (208 pin only) 3.295V 3.135V < Vpp < 3.465V 41 VDD25 +2.5V digital core power supply 2.39V 2.25V - 2.50V - 2.75V
105 VDDP 3.3 V Digital periphery power supply 3.266V 3.135V < Vpp < 3.465V 48 VDD33 +3.3V digital output power supply 3.29V 3.0V - 3.3V - 3.6V
119 VDDP-A2 3.3 V filtered digital power supply for AMCLK 3.295V 3.135V < Vpp < 3.465V 61 VDD33 +3.3V digital output power supply 3.29V 3.0V - 3.3V - 3.6V
135 VDDP 3.3 V Digital periphery power supply 3.295V 3.135V < Vpp < 3.465V 66 VDD25 +2.5V digital core power supply 2.39V 2.25V - 2.50V - 2.75V
140 VDDC 1.8 V Digital core power supply 1.86V 1.7V < Vcc < 1.9V 73 VDD33 +3.3V digital output power supply 3.29V 3.0V - 3.3V - 3.6V
144 VDDA 1.8 V Power supply for internal PLL circuit 1.86V 1.7V < Vcc < 1.9V 89 VDD25 +2.5V digital core power supply 2.40V 2.25V - 2.50V - 2.75V
150 VDDDAC 3.3 V Analog power supply for the video DACs 3.295V 3.135V < Vpp < 3.465V 91 AVDDP +3.3V analog power supply for PLL 3.29V 3.0V - 3.3V - 3.6V
153 VDDDAC 3.3 V Analog power supply for the video DACs 3.296V 3.135V < Vpp < 3.465V 95 AVDDP +3.3V analog power supply for PLL 3.29V 3.0V - 3.3V - 3.6V
159 VDDAFE Analog AFE 3.3 V supply 3.291V 3.135V < Vpp < 3.465V 99 AVDDDAC +3.3V analog power supply for Voltage Slicer 3.29V 3.0V - 3.3V - 3.6V
162 VDDAFE Analog AFE 3.3 V supply 3.29V 3.135V < Vpp < 3.465V U702 (AZ1117HAD)
177 VDDSAFE Analog AFE 3.3 V supply shield 3.29V 3.135V < Vpp < 3.465V 2 OUT OUPUT VOLTAGE 2.4V 2.25V ~ 2.75V
183 VDDPWMS 3.3 V SERVO PWM power supply 3.295V 3.135V < Vpp < 3.465V 3 IN INPUT VOLATAG 3.29V 2.7 V ~ 7V
190 VDDC 1.8 V Digital core power supply 1.86V 1.7V < Vcc < 1.9V U703 (RCR2561)
208 VDDP 3.3 V Digital periphery power supply 3.297V 3.135V < Vpp < 3.465V 5 VIN Supply Input Bypass to GND with a 1uF capacitor 3.23V 2.5V - - 5.5V
U204 (AZ1117HAD) U704 (MP2359)
2 OUT OUPUT VOLTAGE 1.88V 1.7V ~ 1.9V 5 IN Supply Voltage. The MP2359 operates from a 9.15V 4.5V - - 24V
3 IN INPUT VOLATAG 3.29V 2.7 V ~ 7V +4.5V to +24V unregulated input.
U302 (HY57V641620ETP-7-C) C1 is needed to prevent large voltage spikes
1 VDD Power supply for internal circuits and input buffers 3.293V 3.0V ~ 3.6V from appearing at the input.
3 VDDQ Power supply for outpur buffers 3.295V 3.0V ~ 3.6V
9 VDDQ Power supply for outpur buffers 3.293V 3.0V ~ 3.6V
14 VDD Power supply for internal circuits and input buffers 3.294V 3.0V ~ 3.6V
27 VDD Power supply for internal circuits and input buffers 3.294V 3.0V ~ 3.6V
43 VDDQ Power supply for outpur buffers 3.294V 3.0V ~ 3.6V
49 VDDQ Power supply for outpur buffers 3.295V 3.0V ~ 3.6V 2. CAPACITOR VOLTAGE CHART
U303 (HY27UF2G2A)
12 VCC The VCC supplies the power for all the operation 3.29V 2.7V ~ 3.6V LOCA. NO. CAPACITY + - LOCA. NO. CAPACITY + -
37 VCC The VCC supplies the power for all the operation 3.29V 2.7V ~ 3.6V CM201 100uF/10V 3.29V 0V CM418 47uF/16V 3.29V 2.32V
U305 (AT26DF161A) CM202 100uF/10V 1.87V 0V CM421 100uF/10V 4.97V 0V
8 VCC Device power supply 3.295V 2.7V ~ 3.6V CM203 47uF/16V 3.3V 0V CM502 100uF/10V 2.4V 0V
U401 (AM5898N) CM204 47uF/16V 1.87V 0V CM506 100uF/10V 2.4V 0V
6 PVCC1 Vcc for step down converter 1 9.2V 4.5 ~ 16V CM205 220uF/6.3V 3.26V 0V CM509 100uF/10V 4.95V 0V
7 PVCC2 Vcc for step down converter 2 9.2V 4.5 ~ 16V CM206 100uF/10V 1.86V 0V CM603 100uF/16V 8.3V 0V
10 VCC1 VCC for power block of sled 4.98V 4.3 ~ 13.2V CM207 100uF/10V 3.29V 0V CM604 100uF/16V 8.3V 0V
24 VCC2 VCC for power block of spindle,tracking and focus 4.98V 4.3 ~ 13.2V CM403 47uF/16V 4.96V 0V CM605 47uF/25V 9.22V 0V
U501 (FSAV330) CM410 100uF/16V 3.33V 0V CM606 47uF/25V 9.57V 0V
16 VCC supply voltage 4.96V 4.0V ~5.5V CM411 47uF/25V 9.17V 0V CM607 100uF/10V 5.05V 0V
U502 (PT2303) CM412 100uF/16V 5.07V 0V CM608 47uF/25V 9.58V 0V
4 VDD Supply voltage input 4.97V 0V ~ 7V CM413 47uF/25V 9.21V 0V CM701 100uF/10V 2.4V 0V
13 VDD Supply voltage input 4.98V 0V ~ 7V CM415 47uF/16V 3.29V 0V CM703 100uF/10V 1.29V 0V
U503 (TPS60400) CM416 100uF/10V 5,01V 0V CM704 100uF/10V 3.29V 0V
1 OUT power supply output with Vo = -Vi -4.8V CM417 47uF/16V 3.29V 3.28V
2 IN power supply input 4.96V 1.8V ~ 5.25V

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-65 3-66 LGE Internal Use Only
Only for training and service purposes
PRINTED CIRCUIT BOARD DIAGRAMS
1. MAIN P.C.BOARD
(TOP VIEW)

2. MAIN KEY P.C.BOARD

(TOP VIEW)

(BOTTOM VIEW)

LGE Internal Use Only 3-67 3-68 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
MAIN P.C.BOARD
(BOTTOM VIEW)

3. MIS P.C.BOARD
(TOP VIEW) (BOTTOM VIEW)

Copyright © 2008 LG Electronics. Inc. All right reserved. 3-69 3-70 LGE Internal Use Only
Only for training and service purposes
 MEMO MEMO

LGE Internal Use Only 3-71 3-72 Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes