LG 32LH35FD-AA Schematic

LCD TV

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : LB91A

MODEL : 32LH35FD

32LH35FD-AA

North/Latin America http://aic.lgservice.com
Europe/Africa http://eic.lgservice.com
Asia/Oceania http://biz.lgservice.com

Internal Use Only

P/NO : MFL60020317 (0904-REV00) Printed in Korea

Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

- 2 -

LGE Internal Use Only

CONTENTS

CONTENTS ............................................................................................. 2

PRODUCT SAFETY ................................................................................. 3

SPECIFICATION....................................................................................... 6

ADJUSTMENT INSTRUCTION .............................................................. 10

BLOCK DIAGRAM.................................................................................. 14

EXPLODED VIEW .................................................................................. 15

SVC. SHEET ...............................................................................................

Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

- 3 -

LGE Internal Use Only

SAFETY PRECAUTIONS

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the
Schematic Diagram and Exploded View.
It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent
Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.

General Guidance

An isolation Transformer should always be used during the
servicing of a receiver whose chassis is not isolated from the AC
power line. Use a transformer of adequate power rating as this
protects the technician from accidents resulting in personal injury
from electrical shocks.

It will also protect the receiver and it's components from being
damaged by accidental shorts of the circuitry that may be
inadvertently introduced during the service operation.

If any fuse (or Fusible Resistor) in this TV receiver is blown,
replace it with the specified.

When replacing a high wattage resistor (Oxide Metal Film Resistor,
over 1W), keep the resistor 10mm away from PCB.

Keep wires away from high voltage or high temperature parts.

Before returning the receiver to the customer,

always perform an AC leakage current check on the exposed
metallic parts of the cabinet, such as antennas, terminals, etc., to
be sure the set is safe to operate without damage of electrical
shock.

Leakage Current Cold Check(Antenna Cold Check)

With the instrument AC plug removed from AC source, connect an
electrical jumper across the two AC plug prongs. Place the AC
switch in the on position, connect one lead of ohm-meter to the AC
plug prongs tied together and touch other ohm-meter lead in turn to
each exposed metallic parts such as antenna terminals, phone
jacks, etc.
If the exposed metallic part has a return path to the chassis, the
measured resistance should be between 1MΩ and 5.2MΩ.
When the exposed metal has no return path to the chassis the
reading must be infinite.
An other abnormality exists that must be corrected before the
receiver is returned to the customer.

Leakage Current Hot Check (See below Figure)

Plug the AC cord directly into the AC outlet.

Do not use a line Isolation Transformer during this check.

Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor
between a known good earth ground (Water Pipe, Conduit, etc.)
and the exposed metallic parts.
Measure the AC voltage across the resistor using AC voltmeter
with 1000 ohms/volt or more sensitivity.
Reverse plug the AC cord into the AC outlet and repeat AC voltage
measurements for each exposed metallic part. Any voltage
measured must not exceed 0.75 volt RMS which is corresponds to

0.5mA.
In case any measurement is out of the limits specified, there is
possibility of shock hazard and the set must be checked and
repaired before it is returned to the customer.

Leakage Current Hot Check circuit

1.5 Kohm/10W

To Instrument's
exposed
METALLIC PARTS

Good Earth Ground
such as WATER PIPE,
CONDUIT etc.

AC Volt-meter

IMPORTANT SAFETY NOTICE

0.15uF

Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

- 4 -

CAUTION: Before servicing receivers covered by this service
manual and its supplements and addenda, read and follow the

SAFETY PRECAUTIONS on page 3 of this publication.
NOTE: If unforeseen circumstances create conflict between the

following servicing precautions and any of the safety precautions on
page 3 of this publication, always follow the safety precautions.
Remember: Safety First.

General Servicing Precautions

1. Always unplug the receiver AC power cord from the AC power
source before;
a. Removing or reinstalling any component, circuit board

module or any other receiver assembly.

b. Disconnecting or reconnecting any receiver electrical plug or

other electrical connection.

c. Connecting a test substitute in parallel with an electrolytic

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

2. Test high voltage only by measuring it with an appropriate high
voltage meter or other voltage measuring device (DVM,
FETVOM, etc) equipped with a suitable high voltage probe.
Do not test high voltage by "drawing an arc".

3. Do not spray chemicals on or near this receiver or any of its
assemblies.

4. Unless specified otherwise in this service manual, clean
electrical contacts only by applying the following mixture to the
contacts with a pipe cleaner, cotton-tipped stick or comparable
non-abrasive applicator; 10% (by volume) Acetone and 90% (by
volume) isopropyl alcohol (90%-99% strength)
CAUTION: This is a flammable mixture.
Unless specified otherwise in this service manual, lubrication of
contacts in not required.

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

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

7. Always connect the test receiver ground lead to the receiver
chassis ground before connecting the test receiver positive
lead.
Always remove the test receiver ground lead last.

8. Use with this receiver only the test fixtures specified in this

service manual.

CAUTION: Do not connect the test fixture ground strap to any
heat sink in this receiver.

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 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 to
prevent 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 type 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
electrical charges 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. (Otherwise harmless motion such as
the brushing together of your clothes fabric or the lifting of your
foot from a carpeted floor can generate static electricity
sufficient to damage an ES device.)

General Soldering Guidelines

1. Use a grounded-tip, low-wattage soldering iron and appropriate
tip size and shape that will maintain tip temperature within the
range or 500

°F to 600°F.

2. Use an appropriate gauge of RMA resin-core solder composed
of 60 parts tin/40 parts lead.

3. Keep the soldering iron tip clean and well tinned.

4. Thoroughly clean the surfaces to be soldered. Use a mall wire­bristle (0.5 inch, or 1.25cm) brush with a metal handle.
Do not use freon-propelled spray-on cleaners.

5. Use the following unsoldering technique
a. Allow the soldering iron tip to reach normal temperature.

(500

°F to 600°F)

b. Heat the component lead until the solder melts.
c. Quickly draw the melted solder with an anti-static, suction-

type solder removal device or with solder braid.
CAUTION: Work quickly to avoid overheating the circuit
board printed foil.

6. Use the following soldering technique.
a. Allow the soldering iron tip to reach a normal temperature

(500

°F to 600°F)

b. First, hold the soldering iron tip and solder the strand against

the component lead until the solder melts.

c. Quickly move the soldering iron tip to the junction of the

component lead and the printed circuit foil, and hold it there
only until the solder flows onto and around both the
component lead and the foil.
CAUTION: Work quickly to avoid overheating the circuit
board printed foil.

d. Closely inspect the solder area and remove any excess or

splashed solder with a small wire-bristle brush.

SERVICING PRECAUTIONS

Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

- 5 -

LGE Internal Use Only

IC Remove/Replacement

Some chassis circuit boards have slotted holes (oblong) through
which the IC leads are inserted and then bent flat against the
circuit foil. When holes are the slotted type, the following technique
should be used to remove and replace the IC. When working with
boards using the familiar round hole, use the standard technique
as outlined in paragraphs 5 and 6 above.

Removal

1. Desolder and straighten each IC lead in one operation by gently
prying up on the lead with the soldering iron tip as the solder
melts.

2. Draw away the melted solder with an anti-static suction-type
solder removal device (or with solder braid) before removing the
IC.

Replacement

1. Carefully insert the replacement IC in the circuit board.

2. Carefully bend each IC lead against the circuit foil pad and
solder it.

3. Clean the soldered areas with a small wire-bristle brush.
(It is not necessary to reapply acrylic coating to the areas).

"Small-Signal" Discrete Transistor
Removal/Replacement

1. Remove the defective transistor by clipping its leads as close as
possible to the component body.

2. Bend into a "U" shape the end of each of three leads remaining
on the circuit board.

3. Bend into a "U" shape the replacement transistor leads.

4. Connect the replacement transistor leads to the corresponding
leads extending from the circuit board and crimp the "U" with
long nose pliers to insure metal to metal contact then solder
each connection.

Power Output, Transistor Device
Removal/Replacement

1. Heat and remove all solder from around the transistor leads.

2. Remove the heat sink mounting screw (if so equipped).

3. Carefully remove the transistor from the heat sink of the circuit
board.

4. Insert new transistor in the circuit board.

5. Solder each transistor lead, and clip off excess lead.

6. Replace heat sink.

Diode Removal/Replacement

1. Remove defective diode by clipping its leads as close as
possible to diode body.

2. Bend the two remaining leads perpendicular y to the circuit
board.

3. Observing diode polarity, wrap each lead of the new diode
around the corresponding lead on the circuit board.

4. Securely crimp each connection and solder it.

5. Inspect (on the circuit board copper side) the solder joints of
the two "original" leads. If they are not shiny, reheat them and if
necessary, apply additional solder.

Fuse and Conventional Resistor
Removal/Replacement

1. Clip each fuse or resistor lead at top of the circuit board hollow
stake.

2. Securely crimp the leads of replacement component around
notch at stake top.

3. Solder the connections.
CAUTION: Maintain original spacing between the replaced
component and adjacent components and the circuit board to
prevent excessive component temperatures.

Circuit Board Foil Repair

Excessive heat applied to the copper foil of any printed circuit
board will weaken the adhesive that bonds the foil to the circuit
board causing the foil to separate from or "lift-off" the board. The
following guidelines and procedures should be followed whenever
this condition is encountered.

At IC Connections

To repair a defective copper pattern at IC connections use the
following procedure to install a jumper wire on the copper pattern
side of the circuit board. (Use this technique only on IC
connections).

1. Carefully remove the damaged copper pattern with a sharp
knife. (Remove only as much copper as absolutely necessary).

2. carefully scratch away the solder resist and acrylic coating (if
used) from the end of the remaining copper pattern.

3. Bend a small "U" in one end of a small gauge jumper wire and
carefully crimp it around the IC pin. Solder the IC connection.

4. Route the jumper wire along the path of the out-away copper
pattern and let it overlap the previously scraped end of the good
copper pattern. Solder the overlapped area and clip off any
excess jumper wire.

At Other Connections

Use the following technique to repair the defective copper pattern
at connections other than IC Pins. This technique involves the
installation of a jumper wire on the component side of the circuit
board.

1. Remove the defective copper pattern with a sharp knife.
Remove at least 1/4 inch of copper, to ensure that a hazardous
condition will not exist if the jumper wire opens.

2. Trace along the copper pattern from both sides of the pattern
break and locate the nearest component that is directly
connected to the affected copper pattern.

3. Connect insulated 20-gauge jumper wire from the lead of the
nearest component on one side of the pattern break to the lead
of the nearest component on the other side.
Carefully crimp and solder the connections.
CAUTION: Be sure the insulated jumper wire is dressed so the
it does not touch components or sharp edges.

Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

- 6 -

4. Module Specification

No. Item Specification Remark

1. Display Screen Device 32 Wide Color Display Module LCD

2. Aspect Ratio 16:9

3. LCD Module 32”TFT LCD FHD, with Inverter, Low Power LGD (LC320WUN-SBG1)

4. Operating Environment Temp.:0 ~ 50°C 240h
Humidity :Ta=40°C, 90% RH, 240h 32-LGD (FHD/50Hz)

5. Storage Environment Temp.:-20 ~ 60°C, 240h 32-LGD (FHD/50Hz)

6. Input Voltage AC 100 ~ 240V, 50/60Hz

7. Power Consumption Typ : 73.2W (Low Power) LCD(Module)+Backlight(Lamp)

8. Module Size 760.0 (H)x 450.0 (V)x 48.0 (D) With inverter

9. Pixel Pitch 0.36375 (H)x 0.363755 (V)

10. Back Light EEFL

11. Color Depth 10-bit(D), 1.06B colors

12. Coating 3H, Anti-glare

1. Application Range

This specification sheet is applied to the LCD TV used LB91A
chassis.

2. Specification

Each part is tested as below without special appointment

1) Temperature : 25 ± 5°C (77 ± 9ºF), CST : 40 ±5ºC

2) Relative Humidity : 65 ±10%

3) Power Voltage : Standard input voltage
(100-240V@ 50/60Hz)
* Standard Voltage of each products is marked by models

4) Specification and performance of each parts are followed
each drawing and specification by part number in
accordance with BOM.

5) The receiver must be operated for about 20 minutes prior to
the adjustment.

3. Test method

1) Performance : LGE TV test method followed.

2) Demanded other specification

- Safety : UL, CSA, IEC specification

- EMC : FCC, ICE, IEC specification

SPECIFICATION

NOTE : Specifications and others are subject to change without notice for improvement

.

Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

- 7 -

1) Optical characteristics are determined after the unit has been ‘ON’ and stable in a dark environment at 25±2°C

2) Surface luminance is the luminance value at center 1-point across the LCD surface 50cm from the surface with all pixels displaying
white.

No Item Min. Typ. Max. Remark

1 Viewing Angle R/L/U/D 178/178/178/178 CR >10
2 Luminance Luminance 400 500

Variation 1.3 PSM: Vivid, CSM: Cool, White: 100IRE
3 Contrast Ratio CR 900 1300 AllWhite, All Black
4 Color coordinate WHITE X 0.279

Y 0.292

RED X Typ. 0.638 Typ. PSM: Vivid, CSM: Cool, White: 85 IRE

Y +0.03 0.334 +0.03

GREEN X 0.291

Y 0.607

BLUE X 0.145

Y 0.062

P1

P2

P3

P4

P5

1W/4

2W/4

3W/4

1H/4

2H/4

3H/4

: Measurement position (5 point)

5. Chroma & Brightness

5.1 Module optical specifications

*** LGD module Uniformity Measurement Position ***

5.2 Chroma (PSM:Vivid, Color Temperature:Cool)

- except “RGB PC Mode PSM: Standard, Color Temperature: Medium”
** The W/B Tolerance is ±0.002 for Adjustment, but for DQA ±0.015

No Item Min Typ Max Remark

1. Cool White Balance, X axis 0.274 0.276 0.278 DQA : ±0.015
White Balance, Y axis 0.281 0.283 0.285 DQA : ±0.015 -PSM: Vivid, CSM: Cool,

2. Medium White Balance, X axis 0.283 0.285 0.287 DQA : ±0.015 White(85IRE),
White Balance, Y axis 0.291 0.293 0.295 DQA : ±0.015 Dynamic contrast : off,

3. Warm White Balance, X axis 0.311 0.313 0.315 DQA : ±0.015 Dynamic color :off
White Balance, Y axis 0.327 0.329 0.331 DQA : ±0.015

- 8 -

LGE Internal Use OnlyCopyright © 2009 LG Electronics. Inc. All right reserved.

Only for training and service purposes

No.

Specification

Remark

Resolution H-freq(kHz) V-freq(Hz)

1. 720x480 15.73 60.00 SDTV,DVD 480i

2. 720x480 15.63 59.94 SDTV,DVD 480i

3. 720x480 31.47 59.94 480p

4. 720x480 31.50 60.00 480p

5. 720x576 15.625 50.00 SDTV,DVD 625 Line

6. 720x576 31.25 50.00 HDTV 576p

7. 1280x720 45.00 50.00 HDTV 720p

8. 1280x720 44.96 59.94 HDTV 720p

9. 1280x720 45.00 60.00 HDTV 720p

10. 1920x1080 31.25 50.00 HDTV 1080i

11. 1920x1080 33.75 60.00 HDTV 1080i

12. 1920x1080 33.72 59.94 HDTV 1080i

13. 1920x1080 56.250 50 HDTV 1080p

14. 1920x1080 67.43/67.5 59.94/60 HDTV 1080p

7. Component Video Input (Y, CB/PB, CR/PR)

6. SET Optical Feature

6.1 General feature

(Measurement Condition:Full white/Vivid) -> Measure the black luminance after 30 seconds.

No Item

Module

Luminance(min) C/R(min)

Remark

AV, COMPONENT,HDMI AV, COMPONENT,HDMI

1 32 inch LGD FHD 360 cd/m

2

900 except from the PC mode.

No Item Min Inch Power B/D P/N Remark

1

Dynamic CR

40,000:1 32”FHD EAY58582801 HDMI 720p Full White/ Full Black Pattern

(Only HDMI mode)

6.2 Special feature

(Dynamic CR 50000:1) -> Measure the black luminance after 30 seconds.

Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

- 9 -

No. Specification

Remark

Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz) Proposed

1. 720*400 31.468 70.08 28.321 For only DOS mode

2. 640*480 31.469 59.94 25.17 VESA Input 848*480 60Hz, 852*480 60Hz

-> 640*480 60Hz Display

3. 800*600 37.879 60.31 40.00 VESA

4. 1024*768 48.363 60.00 65.00 VESA(XGA)

5. 1280*768 47.78 59.87 79.5 WXGA

6. 1360*768 47.72 59.8 84.75 WXGA

7. 1280*1024 63.595 60.0 108.875 SXGA FHD model

8. 1920*1080 66.587 59.93 138.625 WUXGA FHD model

8. RGB input (PC)

9. HDMI input (PC/DTV)

No. Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz) Remark

PC

1. 720*400 31.468 70.08 28.321 HDCP

2. 640*480 31.469 59.94 25.17 VESA HDCP

3. 800*600 37.879 60.31 40.00 VESA HDCP

4. 1024*768 48.363 60.00 65.00 VESA(XGA)HDCP

5. 1280*768 47.78 59.87 79.5 WXGA HDCP

6. 1360*768 47.72 59.8 84.75 WXGA HDCP

7. 1280*1024 63.595 60.0 108.875 SXGA HDCP

8. 1920*1080 67.5 60 148.5 WUXGA HDCP

DTV

1. 720*480 31.469 /31.5 59.94 /60 27.00/27.03 SDTV 480P

2. 720*576 31.25 50 54 SDTV 576P

3. 1280*720 37.500 50 74.25 HDTV 720P

4. 1280*720 44.96 /45 5 9.94 /60 74.17/74.25 HDTV 720P

5. 1920*1080 33.72 /33.75 59.94 /60 74.17/74.25 HDTV 1080I

6. 1920*1080 28.125 50.00 74.25 HDTV 1080I

7. 1920*1080 26.97 /27 23.97 /24 74.17/74.25 HDTV 1080P

8. 1920*1080 33.716 /33.75 29.976 /30.00 74.25 HDTV 1080P

9. 1920*1080 56.250 50 148.5 HDTV 1080P

10. 1920*1080 67.43 /67.5 59.94 /60 148.35/148.50 HDTV 1080P

Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

1. Application

This spec sheet is applied all of the LCD TV with LB91A
chassis.

2. Designation

(1) The adjustment is according to the order which is

designated and which must be followed, according to the

plan which can be changed only on agreeing.
(2) Power adjustment : Free Voltage.
(3) Magnetic Field Condition: Nil.
(4) Input signal Unit: Product Specification Standard.
(5) Reserve after operation: Above 5 Minutes (Heat Run)

Temperature : at 25 °C±5 °C
Relative humidity : 65 ±10%
Input voltage : 220V, 60Hz

(6) Adjustment equipments : Color Analyzer (CA-210 or CA-

110), Pattern Generator (MSPG-925L or Equivalent), DDC

Adjustment Jig equipment, SVC remote controller.
(7) Push The “IN STOP KEY” – For memory initialization.

3.Main PCB check process

# APC - After Manual-Insert, executing APC

3.1 Boot file Download

1. Execute ISP program “Mstar ISP Utility” and then click

“Config” tab.

2. Set as below, and then click “Auto Detect” and check “OK”

message
If “Error” is displayed, Check connection between computer,
jig, and set.

3. Click “Read” tab, and then load download file (XXXX.bin) by

clicking “Read”

4. Click “Connect” tab. If “Can’t ” is displayed, Check
connection between computer, jig, and set.

5. Click “Auto” tab and set as below

6. Click “Run”.

7. After downloading, check “OK” message.

LGE Internal Use Only

- 10 -

ADJUSTMENT INSTRUCTION

Case1 : Software version up

1. After downloading S/W by USB , TV set will reboot
automatically

2. Push “In-stop” key

3. Push “Power on” key

4. Function inspection

5. After function inspection, Push “In-stop” key.

Case2 : Function check at the assembly line

1. When TV set is entering on the assembly line, Push “In­stop” key at first.

2. Push “Power on” key for turning it on.

-> If you push “Power on” key, TV set will recover channel
information by itself.

3. After function inspection, Push “In-stop” key.

(4)

filexxx.bin

(1) (3)

Please Check the Speed :
To use speed between
from 200KHz to 400KHz

filexxx.bin

(7)

(5)

(8) ……….OK

(6)

3.2 USB DOWNLOAD(*.epk file download)

1. Put the USB Stick to the USB socket

2. Automatically detecting update file in USB Stick

- If your downloaded program version in USB Stick is Low, it
didn’t work.
But your downloaded version is High, USB data is
automatically detecting

3. Show the message “Copying files from memory”

4. Updating is staring.

5. Updating Completed, The TV will restart automatically.

6. If your TV is turned on, check your updated version and Tool
option. (explain the Tool option, next stage)

* If downloading version is more high than your TV have, TV

can lost all channel data. In this case, you have to
channel recover. if all channel data is cleared, you didn’t have
a DTV/ATV test on production line.

* After downloading, have to adjust TOOL OPTION again.

1. Push "IN-START" key in service remote controller.

2. Select "Tool Option 1" and Push “OK” button.

3. Punch in the number. (Each model has their number.)

4. Completed selecting Tool option.

3.3 ADC Process

3.3.1 ADC

• Input signal : Component

• Signal equipment displays.

Adjustment pattern

-Component 480I
MODEL: 209 in Pattern Generator(480i Mode)
PATTERN : 65 in Pattern Generator( MSPG-925 SERISE)

• Input Signal : RGB (You don’t need to connect RGB Cable)
Because We use TV internal pattern

• After enter Service Mode by pushing “ADJ” key,

• Enter Internal ADC mode by pushing “” key at “5. ADC

Calibration”

* Caution

Using ‘power on’ button of the Adjustment R/C , power on TV.

3.3.2 ADC Calibration Protocol (RS232)

* Adjustment can be done using only external ADC
* Required equipment : Adjustment R/C.

3.4 Function Check

3.4.1 Check display and sound

• Check Input and Signal items. (cf. work instructions)

1. TV

2. AV (CVBS)

3. COMPONENT (480i)

4. RGB (PC : 1024 x 768 @ 60hz)

5. HDMI

6. PC Audio In

* Display and Sound check is executed by Remote controller.

- 11 -

LGE Internal Use OnlyCopyright © 2009 LG Electronics. Inc. All right reserved.

Only for training and service purposes

Tool Option 1 2 3 4

32LH35 16577 2600 932 4352

NO Item

CMD1 CMD2

Data0 Data1
1 Main total mode A A 0 0 0 0
2 Change to Component X B 0 0 4 0
3 Adjust Component A D 0 0 1 0
4 Change to RGB X B 0 0 6 0
5 Adjust RGB A D 0 0 1 0

4. Total Assembly line process

4.1 Adjustment Preparation

• W/B Equipment condition
CA210 : CH 9, Test signal : Inner pattern (85IRE)

• Above 5 minutes H/run in the inner pattern. (Power on” key of

adjust remote control)

- Connecting picture of the measuring instrument
(On Automatic control )

Inside PATTERN is used when W/B is controlled. Connect to
auto controller or push Adjustment
R/C POWER-ON -> Enter the mode of White-Balance, the

pattern will come out.

4.1.1 Auto-control interface and directions

1. Adjust in the place where the influx of light like floodlight
around is blocked. (illumination is less than 10ux).

2. Adhere closely the Color Analyzer ( CA210 ) to the module
less than 10cm distance, keep it with the surface of the
Module and Color Analyzer’s Prove vertically.(80~100°).

3. Aging time

- After aging start, keep the power on (no suspension of power

supply) and heat-run over 15 minutes.

- Using ‘no signal’ or ‘full white pattern’ or the others, check the

back light on.

** Caution **
Color Temperature : COOL, Medium, Warm.
One of R Gain/G Gain/ B Gain should be kept on 0xC0, and
adjust other two lower than C0.
(when R/G/B Gain are all C0, it is the FULL Dynamic Range of
Module)

*Manual W/B process using adjusts Remote control.

• After enter Service Mode by pushing “ADJ” key,

• Enter White Balance by pushing “•” key at “3. White Balance”.

* After done all adjustments, Press “In-start” button and compare

Tool option and Area option value with its BOM, if it is correctly
same then unplug the AC cable.

If it is not same, then correct it same with BOM and unplug AC
cable.
For correct it to the model’s module from factory JIG model.

* Push The “IN STOP KEY” after completing the function

inspection.

4.2 DDC EDID Write (RGB 128Byte )

• Connect D-sub Signal Cable to D-Sub Jack.

• Write EDID DATA to EEPROM (24C02) by using DDC2B
protocol.

• Check whether written EDID data is correct or not.

* For SVC main Ass’y, EDID have to be downloaded to Insert
Process in advance.

4.3 DDC EDID Write (HDMI 256Byte)

• Connect HDMI Signal Cable to HDMI Jack.

• Write EDID DATA to EEPROM(24C02) by using DDC2B
protocol.

• Check whether written EDID data is correct or not.

* For SVC main Ass’y, EDID have to be downloaded to Insert

Process in advance.

4.4 EDID DATA

1) All Data : HEXA Value

2) Changeable Data :
*: Serial No : Controlled / Data:01
**: Month : Controlled / Data:00
***:Year : Controlled
****:Check sum

4.4.1 Auto Download

• After enter Service Mode by pushing “ADJ” key,

• Enter EDID D/L mode.

• Enter “START” by pushing “OK” key.

- 12 -

LGE Internal Use OnlyCopyright © 2009 LG Electronics. Inc. All right reserved.

Only for training and service purposes

Cool

11,000k

K

X=0.276

(±0.002)

Y=0.283

(±0.002)

Medium

9,300k

K

X=0.285

(±0.002)

Y=0.293

(±0.002)

Color

Temperature

Warm

6,500k

K

X=0.313

(±0.002)

Y=0.329

(±0.002)

<Test Signal>

Inner pattern

(216gray,85IRE)

COLOR
ANALYZER
TYPE: CA-100

4.4.2 Manual Download
* Caution
* Use the proper signal cable for EDID Download

- Analog EDID : Pin3 exists

- Digital EDID : Pin3 exists
* Caution:

- Never connect HDMI & D-sub Cable at the same time.

- Use the proper cables below for EDID Writing.

- Download HDMI1, HDMI2 separately because HDMI1 is

different from HDMI2.

4.4.3EDID DATA(32/37/42LH35FD-AA)

1. ANALOG DATA 128 Byte (2Bi)

2. DIGITAL DATA(HDMI-1/2/3) 256Byte
(1) FHD HDMI1/2/3 Block1

(2) FHD HDMI1 Block2

(3) FHD HDMI2 Block2

(4) FHD HDMI3 Block2

- 13 -

LGE Internal Use OnlyCopyright © 2009 LG Electronics. Inc. All right reserved.

Only for training and service purposes

For Analog EDID

For HDMI EDID

D-sub to D-sub DVI-D to HDMI or HDMI to HDMI

No. Item Condition Hex Data

1 Manufacturer ID GSM 1E6D

2 Version Digital : 1 01

3 Revision Digital : 3 03

• Detail EDID Options are below (a, , , , ,

)

Product ID

MODEL NAME HEX EDID Table

DDC

Func tion

FHD Model 0001 01 00 Analog/Digital

HD Model 0000 00 00 Analog/Digital

Serial No:

Controlled on production line.

Month, Year:

Controlled on production line: ex) Monthly : ‘09’ Q-> ‘09’

Year : ‘2006’ -> ‘10’

Model Name(Hex):

MODEL NAME MODEL NAME(HEX)

ALL 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 (LG TV)

c

d

f

b

e

a

b

c

d

Checksum: Changeable by total EDID data.
Vendor Specific(HDMI)

INPUT

MODEL NAME(HEX)

HDMI1

65030C001000

HD

(22/26/32/37/42LH20D-AA)

HDMI2

65030C002000

INPUT

MODEL NAME(HEX)

HDMI1

67030C001000B82D

HDMI2

65030C002000B82D

FHD

(32/37/42LH35FD-AA)

HDMI3 65030C003000B82D

f

e

Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

- 14 -

BLOCK DIAGRAM

DDR2 (1Gbit)

Qimonda / Hynix

NAND Flash

(512Mbit)

Digital Audio (Optic)

Digital AMP

NTP3100L

RS-232C (Ctrl./SVC)

I2S

DDR_Data[0:15], DQS, DM …

Addr.[ ], ctrl. data

MAX3232

RS232 IC

Saturn6

Saturn6

Data [0 … 7]

DTV IF +/-

Component 1

Y Pb Pr

Audio L/R

Addr[0…1], CS …

Phone (for RGB)

SPDI

F

RX/TX RX/TX

Tuner CVBS, SIF

TS_Serial In

TS_clk, Sync, Val, Err

TS_Parallel In[0-7]l

SCL,

SDA_3.3V

CVBS

LCD Module

LVDS

Buffer

CE6355

Intel Demod.

CVBS

RGB/H/V

EEPROM

AV 1

AV 2

RGB

Audio L/R

USB2.0

USB DP/DM

MIC2019

O.C. Protector

+5V+5V

Serial Flash

(32Mbit)

SPI

EEPROM

(512K)

CM3212

Sensor

SCL,

SDA_3.3V

XC5000

Tuner

LH30 LU20 : Side

LH20 : Rear

Rear

DDR2 (512Mbit)

Qimonda / Hynix

DDR_Data[0:15], DQS, DM …

Addr.[ ], ctrl. data

Rear

Audio L/R

Audio L/R

Audio L/R

SVC only

LH30 LU20 : Side

LH20 : Rear

HDMI 1

HDMI 2

HDMI 3

5V_HDMI1, HPD1, DDC SCL/SDA, CLK,

DATA

5V_HDMI2, HPD2, DDC SCL/SDA, CLK,

DATA

5V_HDMI3, HPD3, DDC SCL/SDA, CLK,

DATA

LH30 LU20 : Side

LH20 : Rear

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

- 15 -

LGE Internal Use Only

EXPLODED VIEW

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by in the Schematic Diagram and EXPLODED VIEW.
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.

IMPORTANT SAFETY NOTICE

300

200

200T

521

530

804

510

120

900

500

540

806

550

802

801

803

805

400

310

200N

A2

LV1

A10

IC102

Copyright ⓒ 2009 LG Electronics Inc. All right reserved.
Only for traning and service purposes

LGE Internal Use Only

NC_1

NC_2

NC_3

NC_4

NC_5

NC_6

NC_7

NC_8

VCC_1

VSS_1

NC_9

NC_10

NC_11

NC_12

NC_13

NC_14

NC_15

R/B

RE

CE

CLE

ALE

WE

WP

+3.3V

VCC

HOLD#

SCLK

SI

HY27US08121B-TPCB

1

Nand Flash

2

3

4

5

6

7

1386 WON

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

EAN38563401

L102

0.1uF

SPI_CK

SPI_DI

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

C102

R120

R117 3.9K

OPT

C101

IC103

Serial Flash

1

$0.76

2

3

4

+3.3V

0.1uF

8

7

6

5

NAND FLASH MEMORY

/PF_CE0
H : Serial Flash
L : NAND Flash
/PF_CE1
H : 16 bit
L : 8 bit

/F_RB

/PF_OE

/PF_CE0

+3.3V

OPT
R108

1K

/PF_CE1

10K

PF_ALE

R105

/PF_WE

0

C

R101

OPT

Q101

B

R103

R104

R102

OPT

KRC103S

+3.3V

Q102

OPT

0

KRC103S
OPT

E

HY27US08121B-TPCB 512MBIT 64MX8BIT 2.7VTO3.6V 50NSEC UNIFORM SECTOR TSOP TR 48P HYNIX SEMICONDOCTOR

+3.3V

SPI_CS

SPI_DO

10K

R106

0

C

B

0

E

PF_WP

Serial FLASH MEMORY
for BOOT

Flash_WP_1

MX25L3205DM2I-12G 32MBIT 4M X 8BIT 2.7VTO3.6V 12NSEC UNIFORM SECTOR SOIC(EIAJ) ST 8P MACRONIX INTERNATIONAL CO.,LTD.

1K

R112

R113 1K

R114

1K

MX25L3205DM2I-12G

R115

4.7K
CS#

SO

R109

33

WP#

GND

EAN39050401

NC_28

NC_27

NC_26

NC_25

I/O7

I/O6

I/O5

I/O4

NC_24

NC_23

PRE

VCC_2

VSS_2

NC_22

NC_21

NC_20

I/O3

I/O2

I/O1

I/O0

NC_19

NC_18

NC_17

NC_16

EEPROM

E0

E1

E2

VSS

0

+3.3V

AR102

22

C103

10uF 6.3V

C104 0.1uF

AR103

22

IC101

M24512-WMW6

VCC

8

1

$0.418

2

3

4

EAN43349001

WC

7

SCL

6

SDA

5

M24512-WMW6 512KBIT 64K x 8bit 1.8VTO5.5V 5MSEC SOIC(EIAJ) ST 8P STM

Model OPT Description, 081218 Updated

OPT1

OPT0

FHD

H

L

MODEL OPTION

R226
0

+3.3V

1.2K

R110

1/16W
5%

R111 4.7K

R116 4.7K

/DEMOD_RESET

R107 1.2K

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

R125

R127

+3.3V

1K

1K

R126

OPT

FHD

1K

R128

OPT

HD

R132

R134

1K

R133

26"UNDER

1K

32"UP

R135

LCD

PDP

1K

1K

R137

HD

1K

R138

FHD

+5V_GENERAL

R118 1.2K

MODEL_OPT_0

MODEL_OPT_1

MODEL_OPT_2

MODEL_OPT_3

MODEL_OPT_4

OPT

R119 1.2K

FRC

NO FRC

**LH35FD-AA

42/37/32LH20D-AA

26/22LH20D-AA

(Small)

I2C

FE_TUNER_SDA

FE_TUNER_SCL
EEPROM_SDA

EEPROM_SCL
SUB/AMP_SCL
SUB/AMP_SDA

HD/Small

LVDS_CH_B

LVDS_CH_A

Apply +5V_GENERAL and 12V_DIP_DET simultaneously for 26"Inch Up
Apply +5V_GENERAL and 15V_DIP_DET simultaneously for 22"Inch

PCM_A[0-7]

PCM_A[7]

PCM_A[6]

PCM_A[5]

PCM_A[4]

PCM_A[3]

PCM_A[2]

PCM_A[1]

PCM_A[0]

IC105: EAN43352801(ATMEL SHRINK)

+12V

0

0

22"UNDER_DIP_DET

R1001

Big_+24V/Small_+15V

26"UP_DIP_DET

R1004

R1002

12K1%

DIP_DET

DIP_DET

R1005

1K

R1003

1.1K
DIP_DET

+3.3V_ST

R231

0

VCC

MAX810 : CMOS
NCP810 : Open Drain

0IMMRMP008A(MICROCHIP)

+3.3V

L103

C105

0.1uF

001:I24;001:Y13;007:V23

EEPROM_SCL

001:I24;001:Y14;007:V23

EEPROM_SDA

OPT2

Blinking_LED

Moving_LED

OPT0 OPT1

H

H

H

+5V_GENERAL

R1006

10K

DIP_DET

DIP_DET
R1007

1K

C

R1008

Q103

B

E

2SC3052

DIP_DET

2.2K

DIP_DET

C

B

E

12V_DIP_DET

+5V_ST

R229

R230

OPT

MAX810RTR

IC106

3

1

GND

OPT

POWER_ON/OFF_RESETIC

R228

B

100

B

+3.3V_ST

C

Q106
2SC3052

E

C

Q107
2SC3052

E

R221

10K

SW101

12

4 3

R227

100

S6_RESET

C112

10uF

6.3V

RESET

2

R220

4.7K

R232

10K

C113

4.7uF
10V

Modified on 081217 by JIHWAN

-->REVISION 11

Modified on 090123 by HONGSU

-->REVISION13

MCU BOOT STRAP

OPT

OPT

R130 1K

1K

+3.3V

R131 1K

PWM0

PWM1

001:I24;001:M12;007:V23
001:I24;001:M13;007:V23
001:I24;001:M13;007:V23
001:I24;001:M12;007:V23

10 : BOOT 51
11 : BOOT RISC

R123 1K

R124

OPT3

FHD

009:J7

A_DIM

PWM_DIM

HD

OPT2

L

H

H

L

L

H

OPT3

H

L

L

POWER DETECT

+3.3V_ST

R1009

22

Q104
2SC3052

DIP_DET

100K

R218

10K

OPT

RESET

R219

NCP803SN293

2

1

GND

3

IC105

POWER_DET

VCC

26"UP_12V_POWER_DET

R234

LIPS_5V_POWER_DET

+12V

+5V_GENERAL

LIPS_5V_POWER_DET
R212
15K
1%

1608

0

1608

R213

30K

26"UP_12V_POWER_DET

1%

1/10W

R201

15K

1%

1608

R213-*1

6.2K

1%

EAX59793902(0)_MERCURY

For LH20_LH35 MP based on EAX59793901(13)

IC100

HWRESET

PCMD0/CI_D0
PCMD1/CI_D1
PCMD2/CI_D2
PCMD3/CI_D3
PCMD4/CI_D4
PCMD5/CI_D5
PCMD6/CI_D6
PCMD7/CI_D7

PCM_A0/CI_A0
PCM_A1/CI_A1
PCM_A2/CI_A2
PCM_A3/CI_A3
PCM_A4/CI_A4
PCM_A5/CI_A5
PCM_A6/CI_A6
PCM_A7/CI_A7
PCM_A8/CI_A8
PCM_A9/CI_A9
PCM_A10/CI_A10
PCM_A11/CI_A11
PCM_A12/CI_A12
PCM_A13/CI_A13
PCM_A14/CI_A14

PCM_RST/CI_RST
PCM_CD/CI_CD
/PCM_OE
PCM_REG/CI_CLK
PCM_WAIT/CI_WACK
/PCM_IRQA
/PCM_WE
PCM_IOWR/CI_WR
PCM_IOR/CI_RD
/PCM_CE
/PF_CE0
/PF_CE1
/PF_OE
/PF_WE
PF_ALE
PF_AD15
F_RBZ

UART2_TX/SCKM
UART2_RX/SDAM
DDCR_DA
DDCR_CK

DDCA_CLK
DDCA_DA
UART_RX2
UART_TX2

PWM0
PWM1
PWM2
PWM3

SAR0
SAR1
SAR2
SAR3
IRIN

GPIO44

GPIO96
GPIO88
GPIO90/I2S_OUT_MUTE
GPIO91
GPIO97
GPIO98
GPIO99
GPIO103/I2S_OUT_SD3
GPIO102

LHSYNC2/I2S_OUT_MUTE/RX1

XOUT

TESTPIN/GND

SPI_DI
SPI_DO

/SPI_CS

SPI_CK

USB_DP_1
USB_DM_1
USB_DM_2
USB_DP_2

GPIO_PM0/GPIO134
GPIO_PM1/GPIO135
GPIO_PM2/GPIO136
GPIO_PM3/GPIO137

GPIO_PM4/GPIO138
GPIO_PM5/INT1/GPIO139
GPIO_PM6/INT2/GPIO140

GPIO131/LDE/SPI_WPn1

GPIO130/LCK

GPIO132/LHSYNC/SPI_WPn

GPIO60/PCM2_RESET/RX1

GPIO62/PCM2_CD_N/TX1

LVSYNC/GPIO133

GPIO79/LVSYNC2/TX1

UART2_RX/GPIO84
UART2_TX/GPIO85
UART1_RX/GPIO86
UART1_TX/GPIO87

GPIO42/PCM2_CE_N

GPIO43/PCM2_IRQA_N

TS0_D0
TS0_D1
TS0_D2
TS0_D3
TS0_D4
TS0_D5
TS0_D6
TS0_D7

TS0_SYNC

TS0_VLD
TS0_CLK

TS1_D0

TS1_SYNC

TS1_VLD
TS1_CLK

ET_TXD0
ET_TXD1

ET_TX_CLK

ET_RXD0
ET_RXD1

ET_TX_EN

ET_MDC

ET_MDIO

ET_COL

GPIO67
GPIO68

B3

XIN

A3

R167 0

R168 0

E6

AE11

R169 33
AF12
AE12

R170 33
AD11

R171 33

B5

R172

A5

R173
AC10
AB10

E5

R176 100

R207 22

F5

R177

G5

R178

H5

R206

F6

R205 22

G6
H6
AC17

R184 100

AB17

R180 0

AF11

R181
R182

AA18

R183 0

AA17

E7
AC18

R186
C6
F9
F10
A6

R185

B6

R187
R190

AF5

R188 100

AF10

AA8
Y8
Y9
AB7
AA6
AB6
U4
AC5
AC4
AD5
AB4

AB19
AA20
AC19
AA19

C10

R189 22

B11

R191

A9

R192

C11

R194

C9
B10

R195 100

A10

R196 100

B9

R193 0

A11

R197 100

A7

R198 100

R199

B8

/PF_CE0

001:C4

/PF_CE1

001:D6

/PF_OE

001:C4

/PF_WE

001:D7

PF_ALE

001:D6

PF_WP

001:A7

/F_RB

001:C3

C108

1uF

SB_MUTE

Big_+24V/Small_+15V

22"UNDER_15V_POWER_DET

R223

22"UNDER_15V_POWER_DET

C109

1608

2.2uF

1%
33K

AR101

EEPROM_SCL
EEPROM_SDA
FE_TUNER_SDA
FE_TUNER_SCL

ISP_RXD
ISP_TXD

DBG_RX

DBG_TX

R213-*2

9.1K
1/10W
1%

R144
R145

22

+3.3V_ST

R174

S6_RESET

PCM_A[0-7]

001:M2

AR100

22

10K
100

PWM0
PWM1
PWM2

10K

LED_ON/LED_R

MODEL_OPT_4

MODEL_OPT_1
MODEL_OPT_2

MODEL_OPT_0

PWM0
PWM2

KEY1
KEY2

IR

AMP_RST

ERROR_OUT

NTP_MUTE

DSUB_DET

R155

R156 0

OPT

R210

OPT

R211

R147
R148 22
R149 22
R150 22

R152 100

PCM_A[0]
PCM_A[1]
PCM_A[2]
PCM_A[3]
PCM_A[4]
PCM_A[5]
PCM_A[6]
PCM_A[7]

0

0
0

R154 0

R160

R158 0

R165 100

R163 100

LGE3368A (Saturn6 No-DivX)

D4

AC16
AA15
AA16

AC6
Y10
Y11
Y12
Y13

AB16
AC15
AC14
AB14
AC12

AB8

AC13

AA9
AB5
AA4

V4

Y4
AB9
AA7
AD6

AA14
AB18

Y5

AB15
AA10

AC8
AC7
AA5

W4

T4
AE6
AF6

AA12
AA11

AC9
Y14

AB11

F8
D11

AB21
AC21

22

R157 0

R143 100

R153 0

100

R164 0
R161

R162 0

R166 100

R159
100

100

AB13
AB12
AD12
AA13

AC11

J1

J2

W5

V5

A4

B4

F4

E4

C4

D9
D10

D7
E11

E8
E10

D6

D5

C5

AUS_LH20/LH35

AUS_EAX59793902(0)

MSTAR-S6

C110

X100

20pF

12MHz

+3.3V_ST

USB_OCD
5V_HDMI_1
5V_HDMI_2
5V_HDMI_3
AV1_DET

50V

C111
20pF

50V

SPI_DI
SPI_DO
SPI_CS
SPI_CK

LVDS_SEL
/FE_RESET

Flash_WP_1
FE_TUNER_SDA
FE_TUNER_SCL

SUB/AMP_SCL
OPC_EN
SUB/AMP_SDA

AV2_DET

PANEL_AGP
LED_G
BIT_SEL

EDID_WP

MODEL_OPT_3

COMP1_DET

USB_CTL

001:G12

LED_G_SUB
DBG_TX
INV_CTL
PANEL_CTL

POWER_ON/OFF_GPIO

DBG_RX

005:AL11

SIDE_USB_DM
SIDE_USB_DP

R179

100

R233

100

OPT

005:O17;007:J14;007:X14;007:AL14

ISP_TXD

006:K14

001:P18

SIDE_USB

POWER_DET

FE_TS_DATA
FE_TS_SYNC
FE_TS_VAL
FE_TS_CLK

R200
1M

0
0

R204 10K

100
100
100

100

0

100

100
100

100

22
22

0

100

2009.01.31
1 11

+1.26V_VDDC

Copyright ⓒ 2009 LG Electronics Inc. All right reserved.
Only for traning and service purposes

LGE Internal Use Only

007:AK23

005:E21
005:E21
005:E25
005:E23
005:E22

005:AM4

005:P6
005:P8
005:P6

005:P9

004:H8

HDMI1_CLK+
HDMI1_CLK­HDMI1_RX0+
HDMI1_RX0­HDMI1_RX1+
HDMI1_RX1­HDMI1_RX2+
HDMI1_RX2­HDMI1_SDA
HDMI1_SCL
HPD1

HDMI2_CLK+
HDMI2_CLK­HDMI2_RX0+
HDMI2_RX0­HDMI2_RX1+
HDMI2_RX1­HDMI2_RX2+
HDMI2_RX2­HDMI2_SDA
HDMI2_SCL
HPD2

HDMI3_CLK+
HDMI3_CLK­HDMI3_RX0+
HDMI3_RX0­HDMI3_RX1+
HDMI3_RX1­HDMI3_RX2+
HDMI3_RX2­HDMI3_SDA
HDMI3_SCL
HPD3
HDMI_CEC

COMP1

DSUB

CVBS

TV/MNT

COMP1_Pr_IN

COMP1_Y_IN

COMP1_Pb_IN

DSUB_HSYNC
DSUB_VSYNC

DSUB_R
DSUB_G
DSUB_B

AV2_CVBS_IN
AV1_CVBS_IN

FE_VMAIN

R243 0
R244 0
R245

R246

10K

100

R248 0
R249 0
R250

R251 0
R252 0
R253
R254

R258

R260
R261
R262
R263 47
R264

R247

10K

R265
R266
R267 47

470

R268

R255 47
R256 47
R269 47
R270 47

R272 47
R273 47

R271
R257

100

100
100

47

47
470
47

47

47
47

100
100

R274 22

R275 22

C209

C201 0.047uF
C202

0.047uFR259 47

0.047uF

C203

0.047uF

C204
C205 0.047uF
C206

0.047uF

0.047uF

C207

0.047uF

C212
C208

0.047uF

0.047uF

C213

50V

1000pF

C210 0.047uF

0.047uF

C211
C214 0.047uF
C215 0.047uF

C218 0.047uF
C219 0.047uF

C216 0.047uF
C217 0.047uF

LGE3368A (Saturn6 No-DivX)

F1

RXACKP

F2

RXACKN

G2

RXA0P

G3

RXA0N

H3

RXA1P

G1

RXA1N

H1

RXA2P

H2

RXA2N

A1

DDCD_A_DA

B2

DDCD_A_CK

A2

HOTPLUG_A

C3

RXBCKP

B1

RXBCKN

C1

RXB0P

C2

RXB0N

D2

RXB1P

D3

RXB1N

E3

RXB2P

D1

RXB2N

E1

DDCD_B_DA

F3

DDCD_B_CK

E2

HOTPLUG_B

AE8

RXCCKP

AD8

RXCCKN

AD9

RXC0P

AF8

RXC0N

AF9

RXC1P

AE9

RXC1N

AE10

RXC2P

AD10

RXC2N

AE7

DDCD_C_DA

AF7

DDCD_C_CK

AD7

HOTPLUG_C

J3

CEC

N2

HSYNC0/SC1_ID

N1

VSYNC0/SC1_FB

P2

RIN0P/SC1_R

R3

GIN0P/SC1_G

R1

BIN0P/SC1_B

P3

SOGIN0/SC1_CVBS

P1

RINM

T3

BINM

R2

GINM

K3

HSYNC1/DSUB_HSYNC

K2

VSYNC1/DSUB_VSYNC

L1

RIN1P/DSUB_R

L3

GIN1P/DSUB_G

K1

BIN1P/DSUB_B

L2

SOGIN1

V1

RIN2P/COMP_PR+

V2

GIN2P/COMP_Y+

U1

BIN2P/COMP_PB+

V3

SOGIN2

J5

VSYNC2

U3

CVBS1/SC1_CVBS

U2

CVBS2/SC2_CVBS

T1

CVBS3/SIDE_CVBS

T2

VCOM1

M1

CVBS4/S-VIDEO_Y

M2

CVBS6/S-VIDEO_C

N3

CVBS5

M3

CVBS7

W1

CVBS0/RF_CVBS

Y3

VCOM0

Y2

CVBSOUT0/SC2_MNTOUT

AA2

CVBSOUT1

IC100

LVA0P
LVA0M
LVA1P
LVA1M
LVA2P
LVA2M
LVA3P
LVA3M
LVA4P
LVA4M

LVACKP
LVACKM

LVB0P
LVB0M
LVB1P
LVB1M
LVB2P
LVB2M
LVB3P
LVB3M
LVB4P
LVB4M

LVBCKP
LVBCKM

AUR0
AUL0
AUR1
AUL1
AUR2

AUL2

AUR3
AUL3
AUR4
AUL4
AUR5
AUL5

SIF0P
SIF0M

SPDIF_IN

SPDIF_OUT

AUOUTR0/HP_ROUT

AUOUTL0/HP_LOUT
AUOUTR1/SC1_ROUT
AUOUTL1/SC1_LOUT
AUOUTR2/SC2_ROUT
AUOUTL2/SC2_LOUT

I2S_OUT_MCK

I2S_OUT_WS

I2S_OUT_BCK

I2S_OUT_SD

I2S_IN_SD

VCLAMP

REFP
REFM
REXT

AUCOM
AUVRM
AUVRP
AUVAG

AE16
AD16
AD15
AF16
AF15
AE15
AD13
AF14
AF13
AE13

AE14
AD14

AE20
AD20
AD19
AF20
AF19
AE19
AD17
AF18
AF17
AE17

AE18
AD18

AA3
Y1
AE1
AF3
AE3

AE2

AA1
AB1
AB2
AC2
AB3
AC3

W3
W2

F11
E9

AF1
AF2
AD3
AD1
AC1
AD2

A8
B7
C7
D8
C8

K4

0.1uF

C220

H4
J4
G4

R277 390

1%

Check
AE5
AE4
AF4
AD4

C221 0.1uF

C222 10uF
C223 0.1uF
C224
C225 4.7uF

Close to IC
as close as possible

C226 2.2uF
C227
C228
C229
C230 2.2uF
C231
C232 2.2uF
C233

C236 2.2uF
C237 2.2uF

C238 0.1uF

R278 100

R279 100

R284
R285
R286
R287
R288
R289

R280 22
R281 22
R282 22
R283 22

+3.3V

C240

0.1uF

6.3V

1uF

LVDS_A0+
LVDS_A0­LVDS_A1+
LVDS_A1­LVDS_A2+
LVDS_A2­LVDS_A3+
LVDS_A3­LVDS_A4+
LVDS_A4-

LVDS_AC+
LVDS_AC-

LVDS_B0+
LVDS_B0­LVDS_B1+
LVDS_B1­LVDS_B2+
LVDS_B2­LVDS_B3+
LVDS_B3­LVDS_B4+
LVDS_B4-

LVDS_BC+
LVDS_BC-

2.2uF

2.2uF

2.2uF

2.2uF

2.2uF

100
100
100
100
100
100

C242 0.1uF

C241 0.1uF

C245
330uF
4V

OPT

+3.3V_VDDP

C246

0.1uF

006:H13
006:H14
006:H13
006:H13
006:H12
006:H12
006:H10
006:H11
006:H10
006:H10

006:H11
006:H11

006:H18;006:Z15;006:AI16
006:H18;006:Z15;006:AI16
006:H17;006:Z14;006:AI15
006:H18;006:Z14;006:AI15
006:H17;006:Z13;006:AI14
006:H17;006:Z13;006:AI14
006:H15;006:Z11;006:AI12
006:H15;006:Z11;006:AI12

006:H14
006:H15

006:H16
006:H16

COMP1_R_IN
COMP1_L_IN

AV2_R_IN
AV2_L_IN
AV1_R_IN
AV1_L_IN

PC_R_IN
PC_L_IN

R290

47

R291 47C239 0.1uF

C243

C244

22pF

22pF

OPT

OPT

C247
22pF
OPT

C248

0.1uF

C249

0.1uF

C250
22pF

OPT

C251

0.1uF

C252

0.1uF

FE_SIF

005:P4

005:P5

005:AM6

005:AM5
005:P13
005:P12

005:AB9

005:AB10

004:H5

C253

0.1uF

C254

0.1uF

rev 0

C255

0.1uF

C256

0.1uF

AUDIO IN

C257

0.1uF

C258

0.1uF

C259

0.1uF

C260

0.1uF

C261

0.1uF

BLM18PG121SN1D

C262

0.1uF

SPDIF_OUT

AUDIO_MASTER_CLK
MS_LRCK
MS_SCK
MS_LRCH

C264

0.1uF

C263

0.1uF

L201

C265

0.1uF

+3.3V

C266

0.1uF

C267

0.1uF

rev 0

005:AA3

008:K12
008:K17
008:K17
008:K17

C268

0.1uF

AUDIO OUT

C270

0.1uF

+1.8V_DDR

C271

C269

0.1uF

330uF
4V
OPT

C274

C272

0.1uF

C276

0.1uF

C275

0.1uF

GND_2
GND_3
GND_4
GND_5
GND_6
GND_7
GND_8

GND_9
GND_10
GND_11
GND_12
GND_13

GND_14
GND_15
GND_16

GND_17
GND_18

GND_19
GND_20
GND_21
GND_22
GND_23
GND_24

GND_25
GND_26
GND_27
GND_28
GND_29
GND_30
GND_31
GND_32

GND_33
GND_34
GND_35
GND_36
GND_37
GND_38
GND_39

GND_40
GND_41
GND_42
GND_43
GND_44
GND_45
GND_46
GND_47

GND_48
GND_49
GND_50
GND_51
GND_52
GND_53
GND_54
GND_55

GND_56
GND_57
GND_58
GND_59
GND_60
GND_61
GND_62
GND_63

GND_64
GND_65
GND_66
GND_67
GND_68
GND_69
GND_70
GND_71
GND_72
GND_73

C278

0.1uF

C277

0.1uF

IC100

AVDD_MEMPLL_1
AVDD_MEMPLL_2
AVDD_MEMPLL_3

0.1uF

C273

0.1uF

LGE3368A (Saturn6 No-DivX)

E16
E17
E18

F7

L9
L10
L11

L12
L13
L14
L15
L16
L17
L18

M9

M10
M11
M12
M13
M14
M15
M16
M17

M18

N4

N9
N10
N11
N12
N13
N14

N15
N16
N17
N18

P4

P9
P10

P11
P12
P13
P14
P15
P16
P17
P18

R4

R9
R10
R11
R12
R13
R14
R15

R16
R17
R18

T5

T9
T10
T11
T12

T13
T14
T15
T16
T17
T18

U5
W13
Y21

AA23

C282

C280

0.1uF

0.1uF

C281

C279

0.1uF

0.1uF

+1.26V_VDDC

D16

VDDC_1

D17

VDDC_2

D18

VDDC_3

D19

VDDC_4

D20

VDDC_5

H18

VDDC_6

H19

VDDC_7

H20

VDDC_8

J20

VDDC_9

K20

VDDC_10

L20

VDDC_11

M20

VDDC_12

P7

VDDC_13

R7

VDDC_14

T7

VDDC_15

T22

VDDC_16

U7

VDDC_17

U20

VDDC_18

U22

VDDC_19

V7

VDDC_20

V22

VDDC_21

W11

VDDC_22

W12

VDDC_23

W19

VDDC_24

W20

VDDC_25

W22

VDDC_26

Y22

VDDC_27

H9

VDDP_1

H10

VDDP_2

H11

VDDP_3

H12

VDDP_4

N20

VDDP_5

P20

VDDP_6

W9

VDDP_7

W10

VDDP_8

W7

AVDD_AU

G12

AVDD_DDR_1

G13

AVDD_DDR_2

H13

AVDD_DDR_3

H14

AVDD_DDR_4

H15

AVDD_DDR_5

H16

AVDD_DDR_6

W14

AVDD_DDR_7

W15

AVDD_DDR_8

W16

AVDD_DDR_9

AVDD_LPLL

AVDD_MPLL

AVDD_33_1
AVDD_33_2
AVDD_33_3
AVDD_33_4
AVDD_33_5

AVDD_DM

AVDD_USB

W17
W18

H17
T20
V20

R20

H7

J7
K7
L7
M7
N7

W8

H8

AVDD_DDR_10
AVDD_DDR_11

AVDD_OTG : 22.96mA

C284

0.1uF

C283

0.1uF

+1.8V_DDR

C288

0.1uF

PI_080719

C286

0.1uF

C285

0.1uF

+3.3V_VDDP

C287

0.1uF

+3.3V_S6

C297

C292

0.1uF

0.1uF

C296

C291

0.1uF

0.1uF

VDDC : 970mA

VDDP : 102.3mA

+3.3V_S6

C293

C300

0.1uF

0.1uF

+3.3V_AVDD_MPLL

C295
10uF

6.3V

C294

C289

0.1uF

0.1uF

C290

0.1uF

C303

0.1uF

C301

0.1uF

L202

BLM18PG121SN1D

C298

0.1uF

+3.3V_S6

C304

0.1uF

BLM18PG121SN1D

C302

C299

0.1uF

0.1uF

C316

2.2uF
16V

C306

C310

0.1uF

0.1uF

C305

0.1uF

+3.3V

AVDD_AU : 36.11mA

C307

0.1uF

AVDD_MEMPLL : 23.77mA

AVDD_LPLL : 4.69mA

+3.3V_S6

C308

0.1uF

L203

+3.3V_AVDD

AVDD_33 : 281mA

C309

0.1uF

+3.3V_S6

C311

0.1uF

C312

C313

0.1uF

0.1uF

AVDD_DM : 0.03mA

C314
10uF

C315
10uF

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

MAIN_2

EAX59793902(0)_AUS_MERCURY





For LH20_LH35 MP PCB_090131

AUS_LH20/LH35

EAX59793902(0)

MSTAR_S6

2009.01.31
2 11

Qimonda_1G_DDR

Copyright ⓒ 2009 LG Electronics Inc. All right reserved.
Only for traning and service purposes

LGE Internal Use Only

IC300-*1

HYB18TC1G160C2F-2.5

VREF

J2

A0

M8

A1

M3

A2

M7

A3

N2

A4

N8

A5

N3

A6

N7

A7

P2

A8

P8

A9

P3

A10/AP

M2

A11

P7

A12

R2

BA0

L2

BA1

L3

BA2

L1

CK

J8

CK

K8

CKE

K2

ODT

K9

CS

L8

RAS

K7

CAS

L7

WE

K3

LDQS

F7

UDQS

B7

LDM

F3

UDM

B3

LDQS

E8

UDQS

A8

NC4

R3

NC5

R7

NC1

A2

NC2

E2

NC3

R8

VSSDL

J7

VDDL

J1

Elpida_1G_DDR

IC300-*2

EDE1116AEBG-8E-F

VREF

J2

A0

M8

A1

M3

A2

M7

A3

N2

A4

N8

A5

N3

A6

N7

A7

P2

A8

P8

A9

P3

A10

M2

A11

P7

A12

R2

BA0

L2

BA1

L3

BA2

L1

CK

J8

CK

K8

CKE

K2

ODT

K9

CS

L8

RAS

K7

CAS

L7

WE

K3

LDQS

F7

UDQS

B7

LDM

F3

UDM

B3

LDQS

E8

UDQS

A8

NC_5

R3

NC_6

R7

NC_1

A2

NC_2

E2

NC_3

R8

VSSDL

J7

VDDL

J1

Qimonda_512M_DDR

IC301-*1

HYB18TC512160B2F-2.5

DQ0

G8

DQ1

G2

DQ2

H7

DQ3

H3

DQ4

H1

DQ5

H9

DQ6

F1

DQ7

F9

DQ8

C8

DQ9

C2

DQ10

D7

DQ11

D3

DQ12

D1

DQ13

D9

DQ14

B1

DQ15

B9

VDD5

A1

VDD4

E1

VDD3

J9

VDD2

M9

VDD1

R1

VDDQ10

A9

VDDQ9

C1

VDDQ8

C3

VDDQ7

C7

VDDQ6

C9

VDDQ5

E9

VDDQ4

G1

VDDQ3

G3

VDDQ2

G7

VDDQ1

G9

DQ10
DQ11
DQ12
DQ13
DQ14
DQ15

VDD5
VDD4
VDD3
VDD2
VDD1

VDDQ10

VDDQ9
VDDQ8
VDDQ7
VDDQ6
VDDQ5
VDDQ4
VDDQ3
VDDQ2
VDDQ1

VSS5
VSS4
VSS3
VSS2
VSS1

VSSQ10

VSSQ9
VSSQ8
VSSQ7
VSSQ6
VSSQ5
VSSQ4
VSSQ3
VSSQ2
VSSQ1

DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
DQ9

VSS5

A3

VSS4

E3

VSS3

J3

VSS2

N1

VSS1

P9

VSSQ10

B2

VSSQ9

B8

VSSQ8

A7

VSSQ7

D2

VSSQ6

D8

VSSQ5

E7

VSSQ4

F2

VSSQ3

F8

VSSQ2

H2

VSSQ1

H8

DQ0

G8

DQ1

G2

DQ2

H7

DQ3

H3

DQ4

H1

DQ5

H9

DQ6

F1

DQ7

F9

DQ8

C8

DQ9

C2

DQ10

D7

DQ11

D3

DQ12

D1

DQ13

D9

DQ14

B1

DQ15

B9

VDD_5

A1

VDD_4

E1

VDD_3

J9

VDD_2

M9

VDD_1

R1

VDDQ_10

A9

VDDQ_9

C1

VDDQ_8

C3

VDDQ_7

C7

VDDQ_6

C9

VDDQ_5

E9

VDDQ_4

G1

VDDQ_3

G3

VDDQ_2

G7

VDDQ_1

G9

VSS_5

A3

VSS_4

E3

VSS_3

J3

VSS_2

N1

VSS_1

P9

VSSQ_10

B2

VSSQ_9

B8

VSSQ_8

A7

VSSQ_7

D2

VSSQ_6

D8

VSSQ_5

E7

VSSQ_4

F2

VSSQ_3

F8

VSSQ_2

H2

VSSQ_1

H8

SDDR_D[0]
SDDR_D[1]
SDDR_D[2]
SDDR_D[3]
SDDR_D[4]
SDDR_D[5]
SDDR_D[6]
SDDR_D[7]
SDDR_D[8]
SDDR_D[9]
SDDR_D[10]

SDDR_D[0-15]

SDDR_D[11]
SDDR_D[12]
SDDR_D[13]
SDDR_D[14]
SDDR_D[15]

+1.8V_DDR

Hynix_1G_DDR

IC300

HY5PS1G1631CFP-S6

G8
G2
H7
H3
H1
H9
F1
F9
C8
C2
D7
D3
D1
D9
B1
B9

A1
E1
J9
M9
R1

A9
C1
C3
C7
C9
E9
G1
G3
G7
G9

A3
E3
J3
N1
P9

B2
B8
A7
D2
D8
E7
F2
F8
H2
H8

VREF

J2

A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10/AP
A11
A12

BA0
BA1
BA2

CK
CK
CKE

ODT
CS
RAS
CAS
WE

LDQS
UDQS

LDM
UDM

LDQS
UDQS

NC5
NC6

NC1
NC2
NC3

VSSDL

VDDL

SDDR_A[0]
SDDR_A[1]
SDDR_A[2]
SDDR_A[3]
SDDR_A[4]
SDDR_A[5]
SDDR_A[6]
SDDR_A[7]
SDDR_A[8]

SDDR_A[9]
SDDR_A[10]
SDDR_A[11]
SDDR_A[12]

OPT

R321

SDDR_CK

/SDDR_CK

0

R322 4.7K

M8
M3
M7
N2
N8
N3
N7
P2
P8
P3
M2
P7
R2

L2
L3
L1

J8
K8
K2

K9
L8
K7
L7
K3

F7
B7

F3
B3

E8
A8

R3
R7

A2
E2
R8

J7

J1

+1.8V_DDR

5%

1K

R325

0.1uF

0.1uF

R326 1K 5%

C322

C321

SDDR_A[5] ADDR2_A[5]
SDDR_A[3]
SDDR_A[1]
SDDR_A[10]

SDDR_A[9]
SDDR_A[12]
SDDR_A[7]

SDDR_A[0]

SDDR_A[0-12]

SDDR_A[2]
SDDR_A[4]
SDDR_A[6]
SDDR_A[11]
SDDR_A[8]

SDDR_BA[0]
SDDR_BA[1]
SDDR_BA[2]

OPT

R323

150

SDDR_CKE ADDR2_CKE

OPT

R324 4.7K

OPT

/SDDR_RAS
/SDDR_CAS

SDDR_DQS0_P
SDDR_DQS1_P

SDDR_DQM0_P
SDDR_DQM1_P

SDDR_DQS0_N
SDDR_DQS1_N

+1.8V_DDR

+1.8V_DDR

SDDR_ODT

/SDDR_WE

DDR2 1.8V By CAP - Place these Caps near Memory

+1.8V_DDR +1.8V_DDR

C323

0.1uF
C324

10uF

C325

0.1uF

C326

0.1uF

C327

0.1uF

C328

0.1uF

C329

0.1uF

C331

0.1uF

C333

0.1uF

C334

0.1uF

C335

0.1uF

C336

0.1uF

C337

0.1uF

C338

0.1uF

C339

0.1uF

C340

0.1uF

C341

0.1uF

C342

0.1uF

Close to DDR Power Pin Close to DDR Power Pin

+1.8V_DDR

R345

1K 5%

0.1uF

56

56

R32756

R32956

R33022

R33122
R33256

R33356

R33456

R33556

R33656

R33756

R33956
R34056

R34156
R34256

SDDR_D[11]
SDDR_D[12]
SDDR_D[9]
SDDR_D[14]

SDDR_D[4]
SDDR_D[3]
SDDR_D[1]
SDDR_D[6]

SDDR_D[15]
SDDR_D[8]
SDDR_D[10]
SDDR_D[13]

SDDR_D[7]
SDDR_D[0]
SDDR_D[2]
SDDR_D[5]

AR300

AR301

AR302

R344 56

AR306

AR308

R343

56

56

56

AR307

56

AR309

ADDR2_A[3]
ADDR2_A[1]

ADDR2_A[10]

ADDR2_A[9]

ADDR2_A[12]

ADDR2_A[7]
ADDR2_A[0]

ADDR2_A[2]
ADDR2_A[4]
ADDR2_A[6]
ADDR2_A[11]
ADDR2_A[8]

ADDR2_BA[0]
ADDR2_BA[1]
ADDR2_BA[2]

ADDR2_MCLK

/ADDR2_MCLK

ADDR2_ODT

/ADDR2_RAS
/ADDR2_CAS

/ADDR2_WE

ADDR2_DQS0_P
ADDR2_DQS1_P

ADDR2_DQM0_P
ADDR2_DQM1_P

ADDR2_DQS0_N
ADDR2_DQS1_N

ADDR2_D[11]
ADDR2_D[12]

ADDR2_D[9]

ADDR2_D[14]

ADDR2_D[4]
ADDR2_D[3]
ADDR2_D[1]
ADDR2_D[6]

56

ADDR2_D[15]

ADDR2_D[8]
ADDR2_D[10]
ADDR2_D[13]

ADDR2_D[7]

ADDR2_D[0]

ADDR2_D[2]

ADDR2_D[5]

56

R346

1K 5%

C330

ADDR2_A[0-12]

ADDR2_D[0-15]

0.1uF

LGE3368A (Saturn6 No-DivX)

C332

D15

C13

ADDR2_A[0]

A22

ADDR2_A[1]

B13

ADDR2_A[2]

C22

ADDR2_A[3]

A13

ADDR2_A[4]

A23

ADDR2_A[5]

C12

ADDR2_A[6]

B23

ADDR2_A[7]

B12

ADDR2_A[8]

C23

ADDR2_A[9]

B22

ADDR2_A[10]

A12

ADDR2_A[11]

A24

ADDR2_A[12]

C24
B24
D24
B14

A14
D23

D14

D13
D12
D22

B18
C17

C18
A19

A18
B17

B15

ADDR2_D[0]

A21

ADDR2_D[1]

A15

ADDR2_D[2]

B21

ADDR2_D[3]

C21

ADDR2_D[4]

C14

ADDR2_D[5]

C20

ADDR2_D[6]

C15

ADDR2_D[7]

C16

ADDR2_D[8]

C19

ADDR2_D[9]

B16

ADDR2_D[10]

B20

ADDR2_D[11]

A20

ADDR2_D[12]

A16

ADDR2_D[13]

B19

ADDR2_D[14]

A17

ADDR2_D[15]

A_MVREF

A_DDR2_A0
A_DDR2_A1
A_DDR2_A2
A_DDR2_A3
A_DDR2_A4
A_DDR2_A5
A_DDR2_A6
A_DDR2_A7
A_DDR2_A8
A_DDR2_A9
A_DDR2_A10
A_DDR2_A11
A_DDR2_A12

A_DDR2_BA0
A_DDR2_BA1
A_DDR2_BA2
A_DDR2_MCLK

/A_DDR2_MCLK
A_DDR2_CKE

A_DDR2_ODT

/A_DDR2_RAS
/A_DDR2_CAS
/A_DDR2_WE

A_DDR2_DQS0
A_DDR2_DQS1

A_DDR2_DQM0
A_DDR2_DQM1

A_DDR2_DQSB0
A_DDR2_DQSB1

A_DDR2_DQ0
A_DDR2_DQ1
A_DDR2_DQ2
A_DDR2_DQ3
A_DDR2_DQ4
A_DDR2_DQ5
A_DDR2_DQ6
A_DDR2_DQ7
A_DDR2_DQ8
A_DDR2_DQ9
A_DDR2_DQ10
A_DDR2_DQ11
A_DDR2_DQ12
A_DDR2_DQ13
A_DDR2_DQ14
A_DDR2_DQ15

IC100

B_DDR2_A0
B_DDR2_A1
B_DDR2_A2
B_DDR2_A3
B_DDR2_A4
B_DDR2_A5
B_DDR2_A6
B_DDR2_A7
B_DDR2_A8

B_DDR2_A9
B_DDR2_A10
B_DDR2_A11
B_DDR2_A12

B_DDR2_BA0
B_DDR2_BA1
B_DDR2_BA2

B_DDR2_MCLK

/B_DDR2_MCLK

B_DDR2_CKE

B_DDR2_ODT

/B_DDR2_RAS
/B_DDR2_CAS

/B_DDR2_WE

B_DDR2_DQS0
B_DDR2_DQS1

B_DDR2_DQM0
B_DDR2_DQM1

B_DDR2_DQSB0
B_DDR2_DQSB1

B_DDR2_DQ0
B_DDR2_DQ1
B_DDR2_DQ2
B_DDR2_DQ3
B_DDR2_DQ4
B_DDR2_DQ5
B_DDR2_DQ6
B_DDR2_DQ7
B_DDR2_DQ8
B_DDR2_DQ9

B_DDR2_DQ10
B_DDR2_DQ11
B_DDR2_DQ12
B_DDR2_DQ13
B_DDR2_DQ14
B_DDR2_DQ15

T26
AF26
T25
AF23
T24
AE23
R26
AD22
R25
AC22
AD23
R24
AE22

AC23
AC24
AB22
V25

V24
AB23

U26

U25
U24
AB24

AB26
AA26

AC25
AC26

AB25
AA25

W25
AE26
W24
AF24
AF25
V26
AE25
W26
Y26
AD25
Y25
AE24
AD26
Y24
AD24
AA24

BDDR2_A[0]
BDDR2_A[1]
BDDR2_A[2]
BDDR2_A[3]
BDDR2_A[4]
BDDR2_A[5]
BDDR2_A[6]
BDDR2_A[7]
BDDR2_A[8]

BDDR2_A[9]
BDDR2_A[10]
BDDR2_A[11]
BDDR2_A[12]

BDDR2_D[0]

BDDR2_D[1]

BDDR2_D[2]

BDDR2_D[3]

BDDR2_D[4]

BDDR2_D[5]

BDDR2_D[6]

BDDR2_D[7]

BDDR2_D[8]

BDDR2_D[9]
BDDR2_D[10]
BDDR2_D[11]
BDDR2_D[12]
BDDR2_D[13]
BDDR2_D[14]
BDDR2_D[15]

BDDR2_A[0-12]

BDDR2_D[0-15]

BDDR2_DQS0_P
BDDR2_DQS1_P

BDDR2_DQM0_P
BDDR2_DQM1_P

BDDR2_D[11]
BDDR2_D[12]
BDDR2_D[9]
BDDR2_D[14]

BDDR2_D[4]
BDDR2_D[3]
BDDR2_D[1]
BDDR2_D[6]

BDDR2_D[15]
BDDR2_D[8]
BDDR2_D[10]
BDDR2_D[13]

BDDR2_D[7]
BDDR2_D[0]
BDDR2_D[2]
BDDR2_D[5]

C346

C348

C344

C345

C343

BDDR2_A[9]
BDDR2_A[3]
BDDR2_A[1]
BDDR2_A[10]

BDDR2_A[5]
BDDR2_A[12]
BDDR2_A[7] TDDR_A[7]

BDDR2_A[0]
BDDR2_A[2]
BDDR2_A[4]
BDDR2_A[6]
BDDR2_A[11]
BDDR2_A[8]

BDDR2_BA[0]
BDDR2_BA[1]
BDDR2_BA[2]

BDDR2_MCLK

/BDDR2_MCLK

BDDR2_CKE

BDDR2_ODT

/BDDR2_RAS
/BDDR2_CAS

/BDDR2_WE

BDDR2_DQS0_N
BDDR2_DQS1_N

10uF

0.1uF

AR304

R347 56

R348 56

AR310

AR311

56

AR313

56

0.1uF

AR312

AR303

56

AR305

56

56

C347

0.1uF

0.1uF

56

56

R349 56
R350 56R32856
R351 56

R352 22

R353 22

R354 56

R355 56

R356 56

R357 56
R358 56

R359 56
R360 56R33856

R361 56
R362 56

R363 56
R364 56

TDDR_D[11]
TDDR_D[12]

TDDR_D[9]

TDDR_D[14]

TDDR_D[4]
TDDR_D[3]
TDDR_D[1]
TDDR_D[6]

TDDR_D[15]

TDDR_D[8]
TDDR_D[10]
TDDR_D[13]

TDDR_D[7]

TDDR_D[0]

TDDR_D[2]

TDDR_D[5]

0.1uF

TDDR_A[9]
TDDR_A[3]
TDDR_A[1]

TDDR_A[5]
TDDR_A[12]

TDDR_A[0]
TDDR_A[2]
TDDR_A[4]
TDDR_A[6]
TDDR_A[11]
TDDR_A[8]

OPT

+1.8V_DDR

C349

C350

0.1uF

R3651K5%

C353

C352

0.1uF

0.1uF

+1.8V_DDR

R3681K5%

C351

0.1uF

TDDR_A[0]
TDDR_A[1]
TDDR_A[2]TDDR_A[10]
TDDR_A[3]
TDDR_A[4]
TDDR_A[5]
TDDR_A[6]
TDDR_A[7]
TDDR_A[8]
TDDR_A[9]

TDDR_A[0-12]

TDDR_A[10]
TDDR_A[11]
TDDR_A[12]

TDDR_BA[0]
TDDR_BA[1]
TDDR_BA[2]

TDDR_MCLK

OPT

R366

150

/TDDR_MCLK

TDDR_CKE

OPT

R367 4.7K

OPT

R369
/TDDR_RAS
/TDDR_CAS

/TDDR_WE

TDDR_DQS0_P
TDDR_DQS1_P

TDDR_DQM0_P
TDDR_DQM1_P

TDDR_DQS0_N
TDDR_DQS1_N

+1.8V_DDR

0.1uF

C354

0.1uF

4.7K

C355

0.1uF

R370

C356

0.1uF

A10/AP

0

VSSDL

VREF

LDQS
UDQS

LDQS
UDQS

VDDL

C359

C358

C357

0.1uF

0.1uF

0.1uF

Hynix_512M_DDR

IC301

H5PS5162FFR-S6C

J2

A0

M8

A1

M3

A2

M7

A3

N2

A4

N8

A5

N3

A6

N7

A7

P2

A8

P8

A9

P3
M2

A11

P7

A12

R2

BA0

L2

BA1

L3

NC4

L1

CK

J8

CK

K8

CKE

K2

ODT

K9

CS

L8

RAS

K7

CAS

L7

WE

K3

F7
B7

LDM

F3

UDM

B3

E8
A8

NC5

R3

NC6

R7

NC1

A2

NC2

E2

NC3

R8

J7

J1

C360

0.1uF

C361

0.1uF

DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15

VDD5
VDD4
VDD3
VDD2
VDD1

VDDQ10
VDDQ9
VDDQ8
VDDQ7
VDDQ6
VDDQ5
VDDQ4
VDDQ3
VDDQ2
VDDQ1

VSS5
VSS4
VSS3
VSS2
VSS1

VSSQ10
VSSQ9
VSSQ8
VSSQ7
VSSQ6
VSSQ5
VSSQ4
VSSQ3
VSSQ2
VSSQ1

TDDR_D[0]
TDDR_D[1]
TDDR_D[2]
TDDR_D[3]
TDDR_D[4]
TDDR_D[5]
TDDR_D[6]
TDDR_D[7]
TDDR_D[8]

TDDR_D[9]
TDDR_D[10]
TDDR_D[11]
TDDR_D[12]
TDDR_D[13]
TDDR_D[14]
TDDR_D[15]

+1.8V_DDR

G8
G2
H7
H3
H1
H9
F1
F9
C8
C2
D7
D3
D1
D9
B1
B9

A1
E1
J9
M9
R1

A9
C1
C3
C7
C9
E9
G1
G3
G7
G9

A3
E3
J3
N1
P9

B2
B8
A7
D2
D8
E7
F2
F8
H2
H8

VREF

A0
A1
A2
A3
A4
A5
A6
A7
A8
A9

A10/AP

A11
A12

BA0
BA1

CK
CK

CKE

ODT

CS
RAS
CAS

WE

LDQS
UDQS

LDM
UDM

LDQS
UDQS

NC4
NC5
NC6

NC1
NC2

TDDR_D[0-15]

NC3

VSSDL

VDDL

EDE5116AJBG-8E-E

VREF

J2

A0

M8

A1

M3

A2

M7

A3

N2

A4

N8

A5

N3

A6

N7

A7

P2

A8

P8

A9

P3

A10

M2

A11

P7

A12

R2

BA0

L2

BA1

L3

CK

J8

CK

K8

CKE

K2

ODT

K9

CS

L8

RAS

K7

CAS

L7

WE

K3

LDQS

F7

UDQS

B7

LDM

F3

UDM

B3

LDQS

E8

UDQS

A8

NC_4

L1

NC_5

R3

NC_6

R7

NC_1

A2

NC_2

E2

NC_3

R8

VSSDL

J7

VDDL

J1

J2

M8
M3
M7
N2
N8
N3
N7
P2
P8
P3
M2
P7
R2

L2
L3

J8
K8
K2

K9
L8
K7
L7
K3

F7
B7

F3
B3

E8
A8

L1
R3
R7

A2
E2
R8

J7

J1

IC301-*2

DQ0

G8

DQ1

G2

DQ2

H7

DQ3

H3

DQ4

H1

DQ5

H9

DQ6

F1

DQ7

F9

DQ8

C8

DQ9

C2

DQ10

D7

DQ11

D3

DQ12

D1

DQ13

D9

DQ14

B1

DQ15

B9

VDD5

A1

VDD4

E1

VDD3

J9

VDD2

M9

VDD1

R1

VDDQ10

A9

VDDQ9

C1

VDDQ8

C3

VDDQ7

C7

VDDQ6

C9

VDDQ5

E9

VDDQ4

G1

VDDQ3

G3

VDDQ2

G7

VDDQ1

G9

VSS5

A3

VSS4

E3

VSS3

J3

VSS2

N1

VSS1

P9

VSSQ10

B2

VSSQ9

B8

VSSQ8

A7

VSSQ7

D2

VSSQ6

D8

VSSQ5

E7

VSSQ4

F2

VSSQ3

F8

VSSQ2

H2

VSSQ1

H8

DQ0

G8

DQ1

G2

DQ2

H7

DQ3

H3

DQ4

H1

DQ5

H9

DQ6

F1

DQ7

F9

DQ8

C8

DQ9

C2

DQ10

D7

DQ11

D3

DQ12

D1

DQ13

D9

DQ14

B1

DQ15

B9

VDD_5

A1

VDD_4

E1

VDD_3

J9

VDD_2

M9

VDD_1

R1

VDDQ_10

A9

VDDQ_9

C1

VDDQ_8

C3

VDDQ_7

C7

VDDQ_6

C9

VDDQ_5

E9

VDDQ_4

G1

VDDQ_3

G3

VDDQ_2

G7

VDDQ_1

G9

VSS_5

A3

VSS_4

E3

VSS_3

J3

VSS_2

N1

VSS_1

P9

VSSQ_10

B2

VSSQ_9

B8

VSSQ_8

A7

VSSQ_7

D2

VSSQ_6

D8

VSSQ_5

E7

VSSQ_4

F2

VSSQ_3

F8

VSSQ_2

H2

VSSQ_1

H8

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

DDR2

EAX59793902(0)_AUS_MERCURY





For LH20_LH35 MP PCB_090131

AUS_LH20/LH35

EAX59793902(0)

DDR2

2009.01.31

3 11

+5V_TUNER

Copyright ⓒ 2009 LG Electronics Inc. All right reserved.
Only for traning and service purposes

LGE Internal Use Only

C475

0.1uF
16V

C476

0.1uF
16V

+1.8V_TU_CE

C477

0.1uF
16V

C479

0.1uF
16V

L402

MLF1608A2R7J

TUNER_SIF_IF_N

L407

MLF1608A2R7J

TUNER_CVBS_IF_P

R401
680

R411
680

C423
10pF
50V

C409
10pF
50V

L410
0

1/10W
5%

+5V_TUNER

R413
0

R414
0

R404
0

1/16W
5%

R405
0

1/16W
5%

C430

0.1uF
16V

C452

0.1uF
16V

+1.8V_TUNER

C410

0.1uF

R409

390

16V

DTV_IF_N

004:AK27

E

Q402

ISA1530AC1

B

C

+5V_TUNER

R40 8

E

C

390

R41 5

0

E

R41 6

ISA1530AC1

Q403

C

B

C411

0.1uF

390

16V

R410
82

ISA1530AC1

Q401

R422
0

+5V_TUNER

R421

390

E

ISA1530AC1
Q404

C

C453
22uF

16V

C444
270pF

OPT

C442

0.1uF
16V

+5V_TUNER

FE_SIF
002:T16

FE_VMAIN
002:E22

DTV_IF_P

OPT

R406
0

B

B

L412

+3.3V_TUNER

L413

C468
10uF

6.3V

C467
10uF

6.3V

C470

0.1uF
16V

C469

0.1uF
16V

C472

0.1uF
16V

C471

0.1uF
16V

C473

0.1uF
16V

+3.3V_TU_CE

C474

0.1uF
16V

AZ1117H-3.3

INPUT

C450
8pF

50V

3

2

OUTPUT

1

IC403

ADJ/GND

L411

C455

0.1uF
16V

+3.3V_TUNER

C457
22uF
16V

IC405

AZ1117H-1.8TRE1(EH13A)

INPUT

C451

0.1uF
16V

3

2

OUTPUT

ADJ/GND

1

C454

0.1uF
16V

GND

+1.8V_TUNER

C456

0.1uF
16V

C458
22uF
16V

EAX59793902(0)_AUS_MERCURY

+3.3V_TUNER

+1.8V_TUNER

L414

L415

+3.3V_TU_XE

+1.8V_TU_XE

KCN-ET-0-0094

JK401

1

2

PAL-STRAIGHT

JK402

1

2

FE_TUNER_SCL

FE_TUNER_SDA

Shield PAL Jack

OPT

001:M18;004:L1

EAH36618701

/DEMOD_RESET

LD401

SAM2333

D401

+1.8V_TU_CE

16V

0.1uF
C433

16V

0.1uF
C437

16V

0.1uF
C434

16V

C427

16V

C426

16V

0.1uF
C428

R412

4.99K

13

VAGC

VDDC_314VDDA_4

0.1uF
C429

15

16

VIF

16V

16V

0.1uF
C431

1%

REXT45VDDA_746GND_947VDDC_948VDDA_8

44

IC402

XC5000

17

18

SIF

VDDA_5

0.1uF

16V

0.1uF
C432

0.1uF

19

GND_5

16V

C435

C436

16V

20

GND_6

VDDC_421VDDA_6

16V

0.1uF
C438

22

RESET38VI2C39VDDC_640VREF_N41VREF_P42VDDC_743VDDC_8

37

23

VDDD_1

TESTMODE

36
35
34
33
32
31
30
29
28
27
26
25

24

0.1uF

+3.3V_TU_XE

50V

L408

+3.3V_TU_XE

VDDA_1

GND_1

GND_2

EXTCHOKE

GND_3
VDDA_2
VDDA_3
VDDC_1

GND_4
VDDC_2

1000pF

IN1

IN2

C425

C424

0.1uF
16V

1
2
3
4
5
6
7
8
9
10
11
12

0.1uF

+1.8V_TU_XE

C418

0.1uF

16V

2%

L405

39pF

50V

C413

56pF

C415

6.8nH

C416

L406

C414
120pF

L404

270nH

2%

50V

OPT

1uH

L403

390nH

56pF

OPT

C417 0.1uF

C419

1000pF

50V

1008CS-821XGLC

820nH 2%

C420 0.1uF

C421 0.1uF

C422 0.1uF

+1.8V_TU_XE

+1.8V_TU_XE

GND_8
SDA
SCL
VDDD_2
EXTREF
X1
GND_7
X2
ADDRSEL
DDI2
VDDC_5
DDI1

L409

CM2012F2R2KT

C439

0.1uF
16V

R470 33

+5V_TUNER

C440

0.1uF

16V

0

R424

16V

C441

0.1uF

C443

0.1uF
16V

C445

0.1uF
16V

31.875MHz

GND_21X-TAL_1

4

X-TAL_2

3

+1.8V_TU_XE

X403

GND_1

2

/FE_RESET

C446

18pF

50V

50V

C44 7

18p F

C448
18pF
50V

C449
18pF
50V

R437 100

R438

FE_TUNER_SDA

100

FE_TUNER_SCL

IF_AGC

TUNER_CVBS_IF_P

TUNER_SIF_IF_N

004:B2

C480

0.1uF
16V

FE_TS_CLK

FE_TS_DATA

FE_TS_VAL

FE_TS_SYNC

001:AM18

R472
1K

C482

0.1uF
16V

IF_AGC

R44833

33

R458

33

R463
10K

R464
10K

33

+3.3V_TU_CE

R466

1K

+3.3V_TU_CE

R461

R462

R468
1K

DTV_IF_N

+3.3V_TU_CE

+1.8V_TU_CE

+3.3V_TU_CE

VSS_1

1

VDD_1

2

VSS_2

R4360

0

R435

CVDD_1

0

R443

R4420

1/16W
5%

R44 12K

A2[GN]

A1[RD]

STATUS

C

CLK1

DATA1

IRQ

VSS_3
RESET
SLEEP

SADD4
VDD_2
VSS_4
SADD3
SADD2

+1.8V_TU_CE

3
4
5
6
7
8
9
10
11
12
13
14
15
16

R444
10K

BKERR

MICLK

CVDD_6

63

64

17

SADD118SADD0

CVDD_2

R446

10K

OPT

62

19

MOCLK

61

20

VSS_5

MDO7

CVDD_5

VSS_11

58

59

60

IC404

CE6355

EAN60223501

21

23

XTI24XTO

PLLVDD22PLLGND

16V

C460

0.1uF

R449
100K

OPT

X402

20.48MHz

C459
22pF
50V

MDO6

57

VSS_10

MDO5

55

56

25

26

VSS_6

PLLTEST27OSCMODE

C461
22pF
50V

MDO4

VDD_5

54

AVDD

0

53

28

MDO3

52

29

AGND_1

C462

0.1uF
16V

R45 3

MDO1

MDO2

50

51

30

VIN31VIN

OPT

C463

0.1uF
16V

MDO0

49

32

AGND_2

22p F

C46 4

48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33

OPT

22p F

C46 5

MOVAL
MOSTRT
VSS_9
VDD_4
SMTEST
GPP3
AGC1
AGC2/GPP2
VSS_8
CVDD_4
VSS_7
CVDD_3
DATA2/GPP1
CLK2/GPP0
RFLEV
VDD_3

C466

0.1uF
16V

+3.3V_TU_CE

+1.8V_TU_CE

DTV_IF_P

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

AUS_LH20/LH35

EAX59793902(0)

TUNER

2009.01.31

4 11

Component and AV(CVBS)

Copyright ⓒ 2009 LG Electronics Inc. All right reserved.
Only for traning and service purposes

LGE Internal Use Only

JK502

0

3E

4E [RD]O-SPRING-S

9E [RD]E-LUG_2

8D [WH]C-LUG-S

9D [WH]E-LUG

8C [RD]C-LUG-S

9C [RD]E-LUG_1

8B [BL]C-LUG-S

9B [BL]E-LUG

3A [GN]CONTACT-S

4A [GN]O-SPRING-S

9A [GN]E-LUG

R533

R5340

[RD]CONTACT-S

D513
30V

C509

OPT

R537

75

C510

OPT

R535

75

C511

OPT

R536

75

IC501

CAT24C02WI-GT3

A0

A1

A2

VSS

D514
30V

ADUC30S03010L_AMODIODE

D515
ADUC30S03010L_AMODIODE

30V

D516
ADUC30S03010L_AMODIODE

30V

D517
ADUC30S03010L_AMODIODE

30V

VCC

1

8

WP

2

7

SCL

3

6

SDA

4

5

C512

0.1uF
16V

R538

2.2K

C514

C513

18pF

18pF

50V

50V

ADMC5M03200L_AMODIODE

OPT

D503
AMOTECH

5.6V

D505
AMOTECH

5.6V

D506
AMOTECH
30V

D509

AMOTECH

30V

D510

AMOTECH

5.6V

D507
AMOTECH
30V

D511
AMOTECH
30V

D508

AMOTECH

5.6V

D504

AMOTECH

5.6V

D512

AMOTECH

5.6V

D519

ENKMC2838-T112

A1

C

A2

R539

2.2K

R540
22

D518

5.6V

1112131415

678

12345

JK501

KCN-DS-1-0089

C515

0.1uF

16V

9

R509
75

10K

10

R541

R510

R511
470K

6H[RD]CONTACT-L

5H[RD]O-SPRING-L

7G[WH]C-LUG-L

6F[YL]CONTACT-L

5F[YL]O-SPRING-L

PPJ228-01

[ PC ]

002:E17

DSUB_VSYNC

DSUB_HSYNC

002:E17

DSUB_B

002:E18

002:E18

DSUB_G

DSUB_R

002:E17

EAX59793902(0)_AUS_MERCURY

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

INTERFACE

C504

50V

470K

1000pF

C505

50V

1000pF

+3.3V

R516

4.7K

R514
0

R515
0

+3.3V

R517

4.7K

C503

0.1uF
16V

R512
470K

100pF

R513
470K

R544
100

R542
22

D520
ADMC5M03200L_AMODIODE

5.6V

OPT

+3.3V

R545

4.7K

D522

R543

ADMC5M03200L_AMODIODE

0

5.6V

OPT

OPT

16

C506

50V

C507
100pF
50V

SPDIF OPTIC JACK

R500

SPDIF_OUT

10K

R518

10K

R519

+5V_ST

R520
10K

R521
10K

R5310

R5320



EDID_WP

ISP_RXD

ISP_TXD

DSUB_DET

COMP1_R_IN

002:S13

COMP1_L_IN

002:S13

COMP1_Pr_IN

002:E15

COMP1_Pb_IN

002:E16

COMP1_DET

001:AJ20

COMP1_Y_IN

002:E15

AV1_CVBS_IN

AV1_DET

AV1_L_IN

AV1_R_IN

001:Y14

R527
12K

R528
12K

R523
75

R526
1K

R522

75

C508

R524

47pF

75

50V

R525

1K

R529

12K

R530
12K

R546

1K



For LH20_LH35 MP PCB_090131

4.7K

+3.3V

IC500

NL17SZ00DFT2G

A

1

B

2

GND

3

R547

VCC

5

C500

0.1uF
16V

Y

4

0

OPT

PC AUDIO

JK505

PEJ024-01

E_SPRING

3

T_TERMINAL1

6A

B_TERMINAL1

7A

R_SPRING

4

T_SPRING

5

B_TERMINAL2

7B

T_TERMINAL2

6B

SHIELD_PLATE

8

D501

ADMC5M03200L_AMODIODE

5.6V

D502

ADMC5M03200L_AMODIODE

5.6V

R571
22

1/16W
5%

OPT

OPT

C501

100pF

50V

C502

100pF

50V

+3.3V

R573

0

R572
1K
OPT

C516

OPT

100pF

D500

ADMC5M03200L_AMODIODE

R501
470K

R502
470K

R503
15K

R504
15K

50V

+5V_GENERAL

R574

C532

0.1uF
16V

R507
0

R505

10K

R508
0

R506

10K

JK503

JST1223-001

GND

VINPUT

1

VCC

2

3

4

FIX_POLE

0

OPT

AV2(SIDE)

Fib er O pti c

JK504

PPJ218-02

FHD

[YL]O_SPRING

4A

[YL]CONTACT

5A

[YL]U_CAN

2A

[WH]C_LUG

3B

[WH]U_CAN

2B

[RD]O_SPRING

4C

[RD]CONTACT

5C

[RD]U_CAN

2C

D525
AMOTECH

5.6V

R552
0

D526

AMOTECH

30V

D527

AMOTECH

5.6V

D528

AMOTECH

5.6V

R554
75

R555

470K

R556
470K

R558

4.7K

C524

0.1uF
16V

C525
47pF
50V

C526

100pF

50V

C527
100pF
50V

R561
10K

R562
10K

R560

1K

12K

R563
12K

R564

AV2_DET

AV2_CVBS_IN

AV2_L_IN

AV2_R_IN

FHD Option has been applied to this block

SIDE AV-IN_Only LH35

+3.3V

PC_R_IN

002:S15

Side USB

JK508

PC_L_IN

002:S15

KJA-UB-0-0037

REAR USB

5

USB DOW N S TREA M

JK506

KJA-UB-4-0004

5

SIDE USB

DBG_TX
DBG_RX

GND

1

2

3

4

GND

1

2

3

4

+5V_USB

DM

DP

GND

+5V_USB

DM

DP

GND

+5V_ST

C534

10uF

4.7K

REAR USB

C531

100uF

0

R569

REAR USB

0

R570

REAR USB

D523

CDS3C05HDMI1

5.6V

C517

0.33uF
16V

9

ROU T2

R548

R549

4.7K

C518 220pF 50V

C519 220pF 50V

JK507

KCN-DS-1-0088

REAR USB

DOU T28RIN 2

7

10

DIN 2

REAR USB

R568

D524

CDS3C05HDMI1

5.6V

C521

0.33uF
16V

6V-5

IC502

MAX3232CDR

11

12

DIN 1

R551

100

1

0

BLM18PG121SN1D

C520
10uF
10V

RS232C

C2+

C2-

4

13

RIN 1

ROU T1

R553

6

7

2

100

120-ohm

180

C1-2V+

3

14

DOU T1

3

L501

R550

8

OPT

C522

0.33uF
16V

15

GND16VCC

0

OPT

4

R567

0

ILIMIT

0.047uF

IR_OUT

001:AJ26

R557

9

IC503

MIC2019YM6

VOUT

6

5

FAULT

4

EAN60223701

DEVELOPE

C523
25V

C1+

1

D529
ADUC30S03010L_AMODIODE

30V

D530

ADUC30S03010L_AMODIODE

30V

10

5

OPT

OPT

VIN

1

GND

2

ENABLE

3

+5V_ST

C528

0.1uF
50V

+3.3V

USB_CTL

001:AJ26

R559

4.7K

R565

SIDE_USB_DM

SIDE_USB_DP

BLM18PG121SN1D

C529
10uF

10K

R566
47

001:AN8

001:AN8

L502

C530

0.1uF

USB_OCD

001:AI14

+5V_USB

AUS_LH20/LH35

EAX59793902(0)

INTERFACE

2009.01.31
5 11

FHD

Copyright ⓒ 2009 LG Electronics Inc. All right reserved.
Only for traning and service purposes

LGE Internal Use Only

P602

TF05-51S

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

.

1

2

3

4

5

6

7

8

9

VLCD

VLCD

VLCD

VLCD

NC

GND

GND

PANEL_AGP

GND

GND

.

.

.

.

GND

R2CLKP

R2CLKN

GND

.

.

.

.

.

.

BIT_SEL

R612

GND

.

.

.

.

GND

R1CLKP

R1CLKN

GND

.

.

.

.

.

.

GND

OPC_EN

R613

OPC_OUT

R611

P_DIM

R614

LVDS_SEL

NC

NC

NC

NC

NC

GND

R615

PANEL_POWER

C609

R622

1/10W

C608

220uF

2K

16V

R619

1/10W

2K

+3.3V

R631

2.2K

OPT

+3.3V

R620

510

R621

0

OPT

PANEL_AGP

OPC

+3.3V

3.3K

FHD

OPT

OPC_EN

R617

R618

0

R632

0

LVDS_A4+

LVDS_A4-

LVDS_A3+

LVDS_A3-

LVDS_AC+

LVDS_AC-

LVDS_A2+

LVDS_A2-

LVDS_A1+

LVDS_A1-

LVDS_A0+

R616

OPC_OUT

PWM_DIM

OPT

LVDS_A0-

LVDS_B4+

LVDS_B4-

LVDS_B3+

LVDS_B3-

LVDS_BC+

LVDS_BC-

LVDS_B2+

LVDS_B2-

LVDS_B1+

LVDS_B1-

LVDS_B0+

LVDS_B0-

0

0

22

FHD

0

FHD

0

FHD

1000pF

50V

BIT_SEL

C610

0.1uF

OPT

OPT

+3.3V

R623

2.2K

R624

R625

0

PANEL_POWER

P954

FF10001-30

VLCD_5V

VLCD_5V

VLCD_5V

VLCD_5V

VLCD_5V

CLKP

CLKN

PWM_OUT

GND

GND

GND

NC

NC

NC

GND

.

.

GND

GND

.

.

GND

.

.

GND

.

.

GND

NC

NC

22"UNDER_HD

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

28

29

30

31

.

P603

FF10001-30

26"UP_HD

GND

1

GND

26"UP_HD

R626

PANEL_POWER

L606

CB3216PA501E

26"UP_HD

0

R6270

26"UP_HD

LVDS_B3+

LVDS_B3-

LVDS_BC+

LVDS_BC-

LVDS_B2+

LVDS_B2-

LVDS_B1+

LVDS_B1-

LVDS_B0+

LVDS_B0-

26"UP_HD

0

OPT

R62922

R628

PWM_DIM

OPC_OUT

22

LVDS_SEL

PWM_DIM

OPC_OUT

CLKP

CLKN

OPC_EN

LVDS_SEL

VLCD

VLCD

VLCD

VLCD

2

3

4

GND

5

.

6

.

7

GND

8

9

10

GND

11

.

12

.

13

GND

14

.

15

.

16

GND

17

.

18

.

19

GND

20

21

22

GND

23

GND

24

GND

25

GND

26

27

28

29

30

31

.

L607

CB3216PA501E

22"UNDER

LVDS_B3+

LVDS_B3-

LVDS_BC+

LVDS_BC-

LVDS_B2+

LVDS_B2-

LVDS_B1+

LVDS_B1-

LVDS_B0+

LVDS_B0-

R6300

OPT

****LVDS_SEL****

0

OPT

High:JEIDA
Low/NC:VESA

****************

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

EAX59793902(0)_AUS_MERCURY





For LH20_LH35 MP

AUS_LH20/LH35

EAX59793902(0)

LVDS

2009.01.31
6 11

22

Copyright ⓒ 2009 LG Electronics Inc. All right reserved.
Only for traning and service purposes

LGE Internal Use Only

EAG39789401

JK701

5V_HDMI_1

Q702

2SC3052

19

18

17

16

15

14

13

12

11
10

9

8

7

6

5

4

3

2

1

20

21

R701

CK+

D0-

D0_GND

D0+

D1-

D1_GND

D1+

D2-

D2_GND

D2+

GND

C701

1K

0.1uF
16V

R741

2K

+5V_ST

R707 22

R708

R706

OPT

R703
10K

B

OPT

JP702

22

0

C

E

UI_HW_PORT1

R742

47K

R709

1K

JP703

007:X6;007:AG23;007:AL6

HPD1

HDMI1_SDA

002:D9;007:J16

HDMI1_SCL

002:D9;007:J16

CEC_REMOTE

002:D7

HDMI1_CLK-

002:D7

HDMI1_CLK+

002:D8

HDMI1_RX0-

002:D7

HDMI1_RX0+

002:D8

HDMI1_RX1-

002:D8

HDMI1_RX1+

002:D8

HDMI1_RX2-

002:D8

HDMI1_RX2+

22

EAG39789401

JK702

5V_HDMI_2

19

18

17

16

15

14

13

12

11

CK+

10

D0-

9

D0_GND

8

D0+

7

D1-

6

D1_GND

5

D1+

4

D2-

3

D2_GND

2

D2+

1

20

21

GND

R713

1K

R743

2K

Q703EB

C703

0.1uF
16V

R720 22

22

R721

R722

0

UI_HW_PORT2

+5V_ST

R744

OPT

R719
10K

OPT

47K

R723

1K

002:D9

002:D10

002:D10

002:D10

002:D10

002:D11

002:D11

HDMI2_SDA

HDMI2_SCL

CEC_REMOTE

HDMI2_CLK-

HDMI2_CLK+

HDMI2_RX0-

HDMI2_RX0+

HDMI2_RX1-

HDMI2_RX1+

HDMI2_RX2-

HDMI2_RX2+

HPD2

JACK_GND

20

FHD

EAG42463001

JK703

LH35 SIDE HDMI

5V_HDMI_3

19

18

17

16

15

14

13

12

11

CK+

10

D0-

9

D0_GND

8

D0+

7

D1-

6

D1_GND

5

D1+

4

D2-

3

D2_GND

2

D2+

1

GND

FHD

R745

2K

FHD

R728

UI_HW_PORT3/SIDE

Q704

1K

FHD

22

R734

FHD

R733 22

R735

0

FHD

Only LH35_FHD

C

JP709

JP705

C

B

E

FHD

JP707

+5V_ST

R746

OPT

47K
R732
10K

R736

OPT

1K

C706

FHD

0.1uF
16V

002:E13;007:AL16

002:E14;007:AL16

JP708

007:J6;007:X6;007:AG23

002:E12

002:E12

002:E12

002:E12

002:E13

002:E13

002:E13

002:E13

HPD3

HDMI3_SDA

HDMI3_SCL

CEC_REMOTE

HDMI3_CLK-

HDMI3_CLK+

HDMI3_RX0-

HDMI3_RX0+

HDMI3_RX1-

HDMI3_RX1+

HDMI3_RX2-

HDMI3_RX2+

IC701

AT24C02BN-10SU-1.8

A0

1

A1

2

A2

3

GND

4

5V_HDMI_1

R702
0

R705 0

R704 0

JP701

C702

0.1uF

R710

4.7K

VCC

8

WP

7

SCL

6

SDA

5

+5V_ST

A2

A1

ENKMC2838-T112
D704

C

R711

4.7K

HDCP EEPROM

Place this near by S6

IC704

CAT24WC08W-T

R712

4.7K

A0

A1

A2

VSS

VCC

1

8

4.7K

WP

2

7

R747

SCL

3

6

SDA

4

5

C704

0.1uF

+3.3V

EDID_WP

HDMI1_SCL

HDMI1_SDA

Addr:10101--

R716

R718 22

GND

IC702

AT24C02BN-10SU-1.8

A0

1

A1

2

A2

3

GND

4

JP706

C707

0.1uF

5V_HDMI_3

FHD

5V_HDMI_2

R714
0

R717 0

R715 0

JP704

C705

0.1uF

R724

4.7K

VCC

8

WP

7

SCL

6

SDA

5

+5V_ST

A1CA2

ENKMC2838-T112
D705

R725

4.7K

EDID_WP

HDMI2_SCL

HDMI2_SDA

IC703

AT24C02BN-10SU-1.8

A0

1

A1

2

A2

3

GND

4

VCC

8

R729

WP

0

7

FHD

SCL

R730 0

6

5

FHD

FHD

SDA

R731 0

FHD

+5V_ST

A1CA2

ENKMC2838-T112
D706

FHD

EDID_WP

R738

R737

4.7K
FHD

4.7K

FHD

HDMI3_SCL

HDMI3_SDA

FHD Option has been applied to this block

+3.3V_ST

R726

68K

MMBD301LT1G

Q701

SSM6N15FU

R740

SOURCE1

HDMI_CEC002:E14

22

EEPROM_SCL

EEPROM_SDA

0

GATE1

DRAIN2

1

2

3

R739 0

OPT

6

5

4

D703

30V

DRAIN1

GATE2

SOURCE2

R727

9.1K

CEC_REMOTE

007:J6;007:X6;007:AL6

C708

0.1uF
16V

GND

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

HDMI

EAX59793902(0)_AUS_MERCURY





For LH20_35 MP

AUS_LH20/LH35

EAX59793902(0)

HDMI

2009.01.31
7 11

002:X20

Copyright ⓒ 2009 LG Electronics Inc. All right reserved.
Only for traning and service purposes

LGE Internal Use Only

+1.8V_AMP

L801

BLM18PG121SN1D

1uF

002:X20
002:X20

001:I25;001:AJ12;010:W23
001:I25;001:AJ12;010:W23

002:X20

C801
10V

001:AA21

+1.8V_AMP

AMP_RST

AUDIO_MASTER_CLK

L802

R801

BLM18PG121SN1D

C802

0.1uF
50V

MS_LRCH
MS_LRCK

MS_SCK
SUB/AMP_SDA
SUB/AMP_SCL

42
41
40
39
38
37
36
35
34
33
32
31
30
29

OPT

C820

0.1uF
50V

NC
VDR2A
BST2A
PGND2A_2
PGND2A_1
OUT2A_2
OUT2A_1
PVDD2A_2
PVDD2A_1
PVDD2B_2
PVDD2B_1
OUT2B_2
OUT2B_1
PGND2B_2

R811

100

AMP_VCC

C821
68uF

35V

C82 3

1uF25 V

C824
22000pF

50V

2SC3052

R813

Q801

10K

C822
10uF

35V

C825

22000pF

50V

+3.3V_ST

C

E

SPK_L+

SPK_L-

SPK_R+

SPK_R-

WAFER-ANGLE

4

3

2

1

P801

008:AH19

SPEAKER_L

008:AH19

008:AH20

SPEAKER_R

008:AH20

D802

1N4148W

100V

OPT

D803

1N4148W

100V

OPT

D804

1N4148W

100V

OPT

D805

1N4148W

100V

OPT

AMP_VCC

C829

C828

C827

0.1uF
50V

R815

B

10K

0.1uF
50V

ENKMC2838-T112

68uF

35V

D801

A1

C

A2

C800
10uF

35V

R816
12
C830

1000pF
50V

C831
1000pF
50V

R817
12

R818
12

C832
1000pF
50V

C833
1000pF
50V

R819
12

R828

12

R829
12

R800

12

R812
12

SB_MUTE

NTP_MUTE

001:AO10

001:AO10

L804
DA-8580
EAP38319001

2S

1S 1F

L805
DA-8580
EAP38319001

2S

1S 1F

C836

008:AJ8

008:AJ10

008:AJ12

008:AJ14

0.1uF
50V

C837

0.1uF
50V

C838

0.1uF
50V

C839

0.1uF

50V

SPK_L+

SPK_L-

SPK_R+

SPK_R-

2F

2F

C834

0.47uF
50V

C835

0.47uF

50V

R820

4.7K

R821

4.7K

R822

4.7K

R823

4.7K

C840

0.01uF
50V

R824

3.3

R825

3.3
C841

0.01uF
50V

C842

0.01uF
50V

R826

3.3

R827

3.3
C843

0.01uF
50V

L806
120-ohm

L807
120-ohm

L809
120-ohm

L808
120-ohm

Big_+24V/Small_+15V

L803

CB3216PA501E

AMP_VCC

C815

0.1uF
50V

C814

22000pF

50V

R802
100

C806

1000pF

50V R804

0

+3.3V

C808

0.1uF

C807
1000pF

C804

50V

1uF

C803
10V

100pF

50V

C805

0.1uF
50V

R803

3.3K

R805 100
R806 100
R807 100
R808 100
R809 100

0

C81 1

1uF 25V

+1.8V_AMP

C810
1uF

10V

C809
33pF
50V

BST1A
VDR1A
RESET

DVSS_1
VSS_IO

CLK_I

VDD_IO
DGND_PLL
AGND_PLL

AVDD_PLL
DVDD_PLL

TEST0

C812

33pF

50V

AD

LFM

C813

0.1uF
50V

1
2
3
4
5
6
7
8
9
10
11
12
13
14

PGND1A_1

PGND1A_2

55

56

IC801

EAN60664001

NTP-3100L

15

16

DVDD

DVSS_2

OUT1A_1

OUT1A_2

53

54

17

18

WCK19BCK20SDA21SCL

SDATA

PVDD1B_2

PVDD1A_1

PVDD1A_2

51

52

PVDD1B_1

49

50

22

MONITOR_023MONITOR_124MONITOR_2

OUT1B_2

48

TP801

OUT1B_1

47

C81 7
1uF
10V

TP802

TP803

PGND1B_2

46

25

FAULT26VDR2B27BST2B

C816

0.1uF
50V

R810

C818
22000pF
50V

C819
1uF
25V

VDR1B44BST1B45PGND1B_1

43

28

PGND2B_1

33K

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

AMP

EAX59793902(0)_AUS_MERCURY





For LH20_LH35 MP PCB _090131

AUS_LH20/LH35

EAX59793902(0)

AMP

2009.01.31

8 11

A_DIM_SMALL

Copyright ⓒ 2009 LG Electronics Inc. All right reserved.
Only for traning and service purposes

LGE Internal Use Only

A_DIM

22"UNDER

P901

WAFER-ANGLE

10

11

6602T20009K

R908

0

1

2

3

4

5

6

7

8

9

15V(18v)

15V(18v)

GND

GND

5V

5V

ACD

PWR-ON

INV_CTL

DIM

INV_BR

R911

0

OPT

C903
25V
1uF

OPT

FROM LIPS & POWER B/D

C910
220uF
16V

C907
1uF
25V

OPT

L907

BLM15BD121SN1

26"UP

Big_+24V/Small_+15V

C913
68uF

+5V_ST

L906

CB3216UA121

0.1uF

NC
GND
GND

5.2V

5.2V
GND
12V
GND
24V

NC

A_DIM

CB3216UA121

C904

50V

22"UNDER

L904

BG2012B080TF

L905

BLM18PG121SN1D

22"UNDER

22"UNDER

0

R913

P902

FM20020-24

1
3
5
7
9
11
13
15
17
19
21
23NC24

26"UP

25

EAG60670701

.

C912

0.1uF
50V

L903

C906

0.1uF
50V

PWR_ON

2

GND

4

GND

6

5.2V

8

5.2V

10

GND

12

12V

14

GND

16

24V

18

INV ON

20

Err OUT

22

P_DIM

C915
68uF

PWM_DIM

PWM_DIM_LARGE

A_DIM_SMALL

+5V_ST

Q902

3

2

R930

R926 10K

33K
OPT

C914

0.1uF
50V

26"UP

R912
100

R914

6.8K
OPT

1

26"UP

2SC3052

26"UP

26"UP

+3.3V_ST

R918

26"UP

0

C

Q903

E

L909

CB3216UA121

R916
10K

Q901

2SC3052

R929

10K

R931
10K

B

26"UP

C916

0.1uF
50V

+5V_GENERAL

C

E

R919
10K

B

POWER_ON/RL_ON

+12V

C918
100uF
16V

+3.3V_ST

10K

R927

R928
10K
OPT

INV_CTL

Big_+12V/Small_+15V

SMALL_PANEL_POWER_SRC

Direction

PANEL_CTL

001:AK10

+5V

Vout=0.8*(1+R1/R2)

R1

R933

10.5K
1%

R2

R934

8.2K

+5V_ST

001:AO11;009:M10;009:AE12;010:W17

1%

26"UP

L910

BLM18PG121SN1D

POWER_ON/RL_ON

GND

L912

BLM18PG121SN1D

26"UP

L924

BLM18PG121SN1D

22"UNDER

10K

OPT

R936

R935 10K

B

10uF

C927

26"UP

10uF

C928

C925

22uF

+3.3V_ST

R938
10K

Panel Power

C931

C930

C929

0.01uF
50V

R945

10K

R940

22K

C

R941

Q904

22K

2SC3052

E

L913

2.2uH

C92622uF

GND

PGND2_1

1

PVCC_1

2

PVCC_2

3

PVCC_3

4

PGND1_1

5

L914

2.2uH

0.1uF
50V

R946

1.8K

C

B

E

SW2_2

PGND2_2

19

20

IC903

BD9150MUV

7

6

SW1_1

SW1_2

PGND1_2

R943

10K

Q905
2SC3052

+3.3V

8

EN110FB1

10K

9

10uF
16V

R948

FB217EN218SW2_1

C968

0.1uF
50V

C932

4.7uF
16V

16

15

14

13

12

11

C1130

ITH2

AVCC

NC

AGND

ITH1

Q906

RSR025P03

S

+1.8V_DDR

C937

0.1uF
50V

C984

0.022uF
16V

R951

56000

5%

330pF

+3.3V

C939

0.1uF
50V

G

C938

Big_+12V/Small_+15V

R953

D

C943

OPT

1uF
25V

PANEL_POWER

C948

0.1uF
50V

C950
100uF
25V

450 mA

OPT

C969

0.022uF
16V

GND

R952

75K

5%

C944

330pF

BLM18PG121SN1D

OPT
C970
100pF
50V

L916

+3.3V_AVDD

C947

0.1uF
50V

100K

IC906

C951

0.47uF
25V

C952

0.1uF
50V

GND

BS

IN

SW

MP2305DS

1

$0.28

2

3

4

L917
22UH

SS

8

EN

7

COMP

6

FB

5

C953
22uF
16V
3216

R957

R1

56K
1%

C955

0.1uF
50V

C956

5.6nF

Vout=0.923*(1+R1/R2)

+5V_GENERAL(Src is +5V_ST)

POWER_ON/RL_ON

R956
10K

C954

C957

4.7uF

4.7uF

10V

OPT

For Power Sequence about PSU

50V

10V
OPT

R2

Q907

2SC3052

SMALL_PANEL_POWER_SRC

R958

9.1K

R959

12.4K
1%

+5V_ST

R960

C958

10K

10uF

R961

560

C

B

E

+5V_ST

OPT

L918

Direction

22"UNDER

BLM18PG121SN1D

C959

0.1uF
50V

L919

26"UP

Q908

RSR025P03

S

+5V_GENERAL

0

R962

22"

D

G

C960

0.1uF

L921

22uF

BLM18PG121SN1D

L920

22uF

16V

001:G23;005:Y4;005:Z4;009:AK3

L922

CIC21J501NE

C961
10uF
16V

16V

C964

C962

+5V_GENERAL

C963

10uF

C965

0.1uF

C966

0.1uF
50V

C967

0.1uF
50V

+5V_USB

+5V_TUNER

+5V_ST

C901

0.1uF
16V

Big_+24V/Small_+15V

Stand-by +3.3V

+3.3V_ST

IC901

AP1117E33G-13

+12V

$0.048

3IN1

2

OUT

BLM18PG121SN1D

BLM18PG121SN1D

ADJ/GND

L902

22"UNDER

L901

26"UP

C905
100uF

16V

009:P1;009:AC2

Big_+12V/Small_+15V

C908

0.1uF
16V

R909

0

OPT

+3.3V_ST

L908

BLM18PG121SN1D

C902

0.1uF
OPT

R925 22

R901

4.7K

22R922

OPT

OPC

+3.3V_AVDD_MPLL

C917

0.1uF
50V

ERROR_OUT

PWM_DIM_LARGE

OPC_OUT

POWER_ON/OFF_GPIO

POWER_ON/OFF_RESETIC

Placed on SMD-TOP

C919

C IN

22uF

R963 0

R965 0

+5V_ST

BLM18PG121SN1D

L911

C922
22uF

OPT

R964 0

POWER_ON/RL_ON

S6 core 1.26 volt

465 mA @85% efficiency

Vout=0.8*(1+R1/R2)

Close to IC

R939

22K

R1

1%

R937
75K
1/8W
1%

FB

R2

GND

IN

BS

Replaced Part

OPT

R944

10K

1/10W

IC902

MP2212DN

1

2

$0.24

DEVELOPE

3

4

R942

10

R947 0

1/10W

1%

Close to IC

8

7

6

5

R949

22K 1%

EN/SYNC

SW_2

SW_1

VCC

25V

C933
1uF

+3.3V

MAX 3A

R950

1/10W

10K

C940

OPT

0.1uF

16V

$0.07

4.9A 0.0150OHM 34MHZ

L915

3.6uH

NR8040T3R6N

C936

0.1uF
50V

C OUT
C945

22uF

16V

+1.26V_VDDC

1600 mA

OPT

C946

C971

22uF

100pF

16V

Placed on SMD-TOP

50V

+1.8V_DDR

L923

BLM18PG121SN1D

OPT

C949

0.1uF

+1.8V_AMP

C942

0.1uF
50V

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

POWER

AUS_LH20/LH35 MP

EAX59793902(0)

POWER

2009.01.31
9 11

CONTROL & IR & LED

Copyright ⓒ 2009 LG Electronics Inc. All right reserved.
Only for traning and service purposes

LGE Internal Use Only

+3.3V_ST

R973

4.7K

26"UNDER_KEY

L954

26"UNDER_KEY

L952

C972

0.1uF
16V

26"UNDER_KEY

C977

0.1uF
16V

26"UNDER_KEY

KEY1

KEY2

R972 100

R971 100

R974

4.7K

D953

5.6V

AMOTECH

D954

5.6V

AMOTECH

26"UNDER_KEY

26"UNDER_KEY

26"UNDER_KEY

P952

12507WR-03L

KEY1

1

KEY2

2

GND

3

4

GND

32"UP_IR_KEY

P953

12507WS-12L

IR_OUT

R981
22

OPT

LED_G_SUB

LED_ON/LED_R

+5V_ST

R982

47K
OPT

Q910

2SC3052

OPT

LED_G

C

E

B

L953

BLM18PG121SN1D

32"UP_IR_KEY

R987

26"UNDER_IR

IR

R983
10K

OPT

2SC3052

32"UP_IR_KEY

L951

+5V_ST

OPT

0

L955

+5V_ST

R984

47K
OPT

Q911

OPT

26"UNDER_IR

C973

1000pF

C

B

E

C983

32"UP_IR_KEY

0.1uF

L957

BLM18PG121SN1D

C975

0.1uF
16V

L956

26"UNDER_IR

26"UNDER_IR

R985

47K

OPT

C976

0.1uF
32"UP_IR_KEY

C978
1000pF
50V

C974

1000pF

L959

BLM18PG121SN1D

D951

5.6V

D952

26"UNDER_IR

26"UNDER_IR

+3.3V

L958

BLM18PG121SN1D

32"UP_IR_KEY

SUB/AMP_SCL

SUB/AMP_SDA

26"UNDER_IR

P951

12507WS-08L

KEY1

1

KEY2

2

GND

3

5V_ST

4

GND

5

IR

6

LED_B

7

LED_R

8

9

.

R976 100
32"UP_IR_KEY

R975

32"UP_IR_KEY

32"UP_IR_KEY

D955

5.6V

AMOTECH

EAG58732904

C979

100pF

C980

0.1uF

50V

16V

D956

5.6V

AMOTECH

32"UP_IR_KEY

100

32"UP_IR_KEY

D958

5.6V

AMOTECH

LED_ON/LED_R

POWER_ON/RL_ON

C981

1000pF

50V

32"UP_IR_KEY

D957

32"UP_IR_KEY

R980

5.6V

0

D959

5.6V

R978 0

32"UP_IR_KEY

R979 0

OPT

C982

0.1uF
16V

R986

10K

32"UP_IR_KEY

32"UP_IR_KEY

1

SCL

2

SDA

3

GND

4

KEY1

5

KEY2

6

5V_ST

7

GND

8

WARM_ST

IR

9

10

GND

EAG58732902

11

3.3V

12

PWR_ON

13

GND

M1

MDS61887701

M2

MDS61887701

M3

MDS61887701

SMD GASKET-LVDS

SMD GASKET-MEMORY1

SMD GASKET-MEMORY2

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

EAX59793902(0)_AUS_MERCURY





For LH20_LH35 MP

AUS_LH20/LH35

EAX59793902(0)

IR

2009.01.31
10

11

Contents of LCD TV Standard Repair Process

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

No. Error symptom (High category) Error symptom (Mid category) Page Remarks

1
2 No video/No audio
3 Video error, video lag/stop
4 Color error

5

6

7

8
9 Wrecked audio/discontinuation/noise

10

A. Video error

B. Power error

C. Audio error

D. Function error

No video/Normal audio

Vertical/Horizontal bar, residual image,
light spot, external device color error

No power
Off when on, off while viewing, power auto

on/off
No audio/Normal video

No response in remote controller, key error,
recording error, memory error

11 External device recognition error
12 E. Noise Circuit noise, mechanical noise
13 F. Exterior error Exterior defect

First of all, Check whether there is SVC Bulletin in GCSC System for these model.

Standard Repair Process

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Error

symptom

A. Video error

No video/ Normal audio

Established

date

Revised date

2008. 3 .26

First of all, Check whether all of cables between board is inserted properly or not.

(Main B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable,,,)

No video
Normal audio

Normal

audio

N

Move to No
video/No audio

Y

Check Back Light
On with naked eye

Check Power Board 20V or 24v output

On

Normal
voltage

Repair Power
Board or parts

Y

Check Power
Board
12v,5v etc.

N

Replace Inverter

Y

or module

N

Normal

voltage

Repair Power
Board or parts

Y

OR

N

End

Electronics 6-3

1/13

Replace Main Board

Replace T-con
Board or module

※Precaution

Always check & record S/W Version and White
Balance value before replacing the Main Board

Replace Main Board

1

Re-enter White Balance value

Standard Repair Process

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

symptom

No Video/
No audio

Error

Check various
voltages of Power
Board ( 5V,12V,20V
or 24V…)

A. Video error

No video/ No audio

Normal

voltage?

Replace Power
Board and repair
parts

Y

N

Check and
replace
MAIN B/D

Established

date

Revised date

End

2008. 3 .26

Electronics 6-3

2/13

2

Standard Repair Process

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Check RF Signal level

Normal
Signal?

N

Check RF Cable

Connection

1. Reconnection

Y

Error

symptom

A. Picture Problem

Picture broken/ Freezing

. By using Digital signal level meter
. By using Diagnostics menu on OSD

( Menu→Setup→Diagnostic)

- Signal strength (Normal : over 50%)

- Signal Quality (Normal: over 50%)

Check whether other equipments have problem or not.

(By connecting RF Cable at other equipment)

→ DVD Player ,Set-Top-Box, Different maker TV etc`

Normal

Picture?

Y

Check

S/W Version

SVC

Bulletin?

Established

date

Revised date

2008. 3 .26

■ Menu→Setup →Booster

N

Normal

Picture?

Electronics 6-3

3/13

Y

Close

Normal

Picture?

Y

Close

N

N

Contact with signal distributor

or broadcaster (Cable or Air)

3

Y

S/W Upgrade

Normal

Picture?

Y

Close

N

N

Check

Tuner soldering

Replace

Main B/D

Standard Repair Process

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Check color by input

-External Input

-COMPONENT

-RGB

-HDMI/DVI

Check Test pattern

Error

symptom

Color

error?

Check error
color input
mode

※ Check
and replace

Y

Link Cable
(LVDS) and

N

contact
condition

External Input/

Component

error

A. Video error

Color error

Color

error?

Check
external
device and
cable

Established

date

Revised date

2008. 3 .26

Electronics 6-3

4/13

Other Module

Replace module

Y

Y

Replace Main B/D

N

External device

/Cable

normal

N

Color

error?

N

End

Y

Replace
T-Con
Board

Replace Main B/D

Y

Color

error?

N

RGB/

HDMI/DVI

error

Check external
device and
cable

4

Request repair

for external

device/cable

N

External device

/Cable

normal

Y

Replace Main B/D

Standard Repair Process

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

A. Video error

LCD TV

Error

symptom

Vertical / Horizontal bar, residual image,
light spot, external device color error

Vertical/Horizontal bar, residual image, light spot

Check color condition by input

-External Input

-Component

-RGB

-HDMI/DVI

Check Test pattern

Screen

normal?

N

Replace
module

Check external

Y

device
connection
condition

Normal?

N

Request repair
for external
device

External device screen error-Color error

Check screen
condition by

Check S/W Version

Check

version

Y

S/W Upgrade

Normal

screen?

Y

End

N

N

input

-External Input

-Component

-RGB

-HDMI/DVI

Check and

Y

replace Link
Cable

External

Input
error

Component

error

RGB

error

HDMI/

DVI

5

Established

date

2008. 3 .26

Revised date

Replace T-Con Board

Screen

normal?

End

N

Replace Main B/D

Y

Connect other external
device and cable

(Check normal operation of
External Input, Component,
RGB and HDMI/DVI by
connecting Jig, pattern
Generator ,Set-top Box etc.

Connect other external
device and cable

(Check normal operation of
External Input, Component,
RGB and HDMI/DVI by
connecting Jig, pattern
Generator ,Set-top Box etc.

Electronics 6-3

5/13

Other Module

Replace
Module

N

Screen

normal?

Y

End

Replace module
in abnormal displaying
after exchanging T-Con B'd

Screen

normal?

Request repair for
external device

Screen

normal?

N

Replace
Main B/D

Y

Y

N

Replace
Main B/D

Standard Repair Process

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Check
Power LED

. Stand-By: Red
. Operating: Blue

Error

symptom

Power LED

On?

N

Check Power cord
was inserted properly

Check & Repair

※

Y

Mechanical Power switch

on Local control of TV

Normal?

N

B. Power error

Check ST-BY 5V

No power

DC Power on
by pressing Power Key
On Remote control

Y

Normal

Y

voltage?

Established

date

2008. 3 .26

Revised date

Normal

operation?

Measure voltage of each output of Power B/D

Normal

voltage?

N

Check Power
On ‘”High”

Y

Replace Main B/D

Y

N

Replace Main B/D

OK?

Electronics 6-3

6/13

Replace

Y

Power
B/D

N

Y

Close

Replace Power B/D

N

Replace Power
B/D

※ ’09 years new model apply mechanical power switch

to reduce power consumption in stand-by status.

If mechanical power switch off

→ Doesn’t turn on by remote control
→ Doesn’t appear LED light

Please refer to the A21 Page

6

Standard Repair Process

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Check outlet

Check A/C code

Check for 3 wave length

Error

symptom

Error?

Y

Fix A/C code & Outlet
and describe 3 wave
length

B. Power error

Off when on, off while viewing, power auto on/off

N

Check Power Off
Mode

(If Power Off mode
is not displayed)
Check Power B/D
voltage

※ Caution

Check and fix exterior
of Power B/D Part

Abnormal

Abnormal

Established

date

Revised date

CPU

1

Normal

voltage?

Replace Power B/D

Y

N

2008. 3 .26

Replace Main B/D

Replace Main B/D

Electronics 6-3

7/13

Normal?

Replace Power B/D

Y

N

End

* Please refer to the all cases which

can be displayed on power off mode.

Status Power off List Explanation

"POWEROFF_REMOTEKEY" Power off by REMOTE CONTROL
"POWEROFF_OFFTIMER" Power off by OFF TIMER
"POWEROFF_SLEEPTIMER" Power off by SLEEP TIMER
"POWEROFF_INSTOP" Power off by INSTOP KEY
"POWEROFF_AUTOOFF" Power off by AUTO OFF

Normal

Abnormal

"POWEROFF_ONTIMER" Power off by ON TIMER
"POWEROFF_RS232C" Power off by RS232C
"POWEROFF_RESREC" Power off by Reservated Record
"POWEROFF_RECEND" Power off by End of Recording
"POWEROFF_SWDOWN" Power off by S/W Download
"POWEROFF_UNKNOWN" Power off by unknown status except listed case

"POWEROFF_ABNORMAL1" Power off by abnormal status except CPU trouble
"POWEROFF_CPUABNORMAL" Power off by CPU Abnormal

7

Standard Repair Process

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

No audio
Screen normal

Error

symptom

Check user
menu >
Speaker off

C. Audio error

No audio/ Normal video

N

Off

Y

Cancel OFF and describe

Check audio B+
20V or 24V of
Power Board

Replace Power Board and repair parts

Established

date

Revised date

Normal
voltage

Y

N

2008. 3 .26

Electronics 6-3

8/13

Check
Speaker
disconnection

Disconnection

Y

Replace Speaker

8

N

Replace MAIN Board End

Standard Repair Process

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Check input
signal

-RF

-External Input
signal

Error

symptom

C. Audio error

Wrecked audio/ discontinuation/noise

Established

date

Revised date

2008. 3 .26

Electronics 6-3

→ Wrecked audio/d iscontinuation/noise is same after “Check input signal” compared to No audi o

Signal

normal?

Y

N

(When RF signal is not
received)
Request repair to external
cable/ANT provider

(In case of
External Input
signal error)
Check and fix
external device

Wrecked audio/

Discontinuation/

Noise for

all audio

Wrecked audio/

Discontinuation/

Noise only

for D-TV

Wrecked audio/

Discontinuation/

Noise only

for Analog

Wrecked audio/

Discontinuation/

Noise only

for External Input

Check and replace
speaker and
connector

Replace Main B/D

Connect and check
other external
device

Check audio
B+ Voltage (20V or 24V)

Normal

voltage?

N

Replace Power B/D

Replace Main B/D

Normal

audio?

Y

N

Y

9/13

End

Check and fix external device

9

Standard Repair Process

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

D. General Function Problem

Remote control & Local switch checking

LCD TV

Error

symptom

1. Remote control(R/C) operating error

Check R/C itself

Operation

Check R/C Operating

When turn off light

in room

If R/C operate,

Explain the customer

cause is interference

from light in room.

operating?

Normal

Y

N

Check & Replace

Baterry of R/C

Normal

operating?

Replace R/C

Check & Repair
Cable connection
Connector solder

Close

N

Normal

operating?

Y

Close

N

Check B+ 5V

On Main B/D

Established

date

Revised date

Normal

Voltage?

Check 5v on Power B/D

Replace Power B/D or

Replace Main B/D

(Power B/D don’t have problem)

Y

N

2008. 3 .26

Check IR

Output signal

Electronics 6-3

10/13

Replace

Main B/D

Normal

Signal?

N

Repair/Replace

IR B/D

Y

2. Local(Mechanical) switch operating error

Check R/C

Operation

Normal

operating?

N

Move

Power problem

Section

Check & Repair

Y

Cable connection

Connector solder

Normal

operating?

Y

Close

Check & Replace

N

Assembly status

(Key PCB + tool )

10

Normal

operating?

Y

Close

N

Check Key

Output signal

Replace

Main B/D

Normal

Signal?

N

Repair/Replace

Local switch B/D

Y

Standard Repair Process

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Check
input
signal

Error

symptom

Y

Signal

input?

N

Check and fix
external device/cable

D. Function error

External device recognition error

Check technical
information

- Fix information

- S/W Version

Technical

information?

Fix in

accordance

with technical

information

Established

date

Revised date

External Input and

N

Y

Component

Recognition error

RGB,HDMI/
DVI, Optical

Recognition error

2008. 3 .26

Replace Main B/D

Replace Main B/D

Electronics 6-3

11/13

11

Standard Repair Process

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Identify
nose
type

Error

symptom

Circuit

noise

Mechanical

noise

※ Mechanical noise is a natural
phenomenon, and apply the 1st level
description. When the customer does not
agree, apply the process by stage.
※ Describe the basis of the description
in “Part related to nose” in the Owner’s
Manual.

Check location
of noise

Circuit noise, mechanica l noise

Check
location of
noise

E. Noise

Replace inverter

OR

Replace LIPS B/D

Established

date

Revised date

2008. 3 .26

<With Inverter Module>

<Without Inverter Module>

※ When the nose is severe, replace the module
(For models with fix information, upgrade the
S/W or provide the description)

OR

※ If there is a “Tak Tak” noise from the
cabinet, refer to the KMS fix information and
then proceed as shown in the solution manual

OR

(For models without any fix information,
provide the description)

Electronics 6-3

12/13

12

Standard Repair Process

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Error

symptom

Zoom part with
exterior damage

Module

damage

Cabinet

damage

Remote

controller

damage

F. Exterior defect

Exterior defect

Replace module

Replace cabinet

Replace remote controller

Established

date

Revised date

2008. 3 .26

Electronics 6-3

13/13

Stand

dent

Replace stand

13

LCD TV Repair Process Index

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

- Trouble shooting by input block (Component level check)

No. Symptom (L) Input Block Page Remark

1 Power Problem Power-up Boot fail 1
2

No OSD 2
3 Digital TV 3
4 Analog TV 4
5 AV (Scart / CVBS/ S-Video) 5

Video Problem
6 Component 7
7 RGB(D-SUB) 9

8 HDMI 11
9

All Input 13
10 Digital TV 14
11 Analog TV 15

Audio Problem
12 AV / Component / RGB, HDMI-PC/ HDMI-DTV 16
13 AV Audio out / No Audio (SPDIF) 23
14 USB / Remocon Probl em USB no connect / Remocon 24
15 Intelligent Sensor Intelligent Sensor 25

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Symptom

Power-Up Boot Fail

Making

Revision

2009. 2 . 1
1/25

P800 Pin #7~#10

Voltage Level = 5V ?

NO YES

Check Power connector

OK ?

YES

P800 Pin #2

Voltage level = 5V ?

NO

Replace MAIN B’D Q801

YES

P800 Pin #13, 14 = 12V
P800 Pin #17, 18 = 24V ?

NO

Replace Power Board

YES

MAIN B’D L815 = 3.3V ? Replace MAIN B’D IC804

NO

YES

MAIN B’D L816 = 1.26V ? Replace MAIN B’D IC805

NO

YES

MAIN B’D L809 = 1.8V ? Replace MAIN B’D IC807

NO

Replace Power Board

YES

Check MAIN B’D X100 Clock

12MHz

YES

Replace MAIN B’D IC102

NAND FLASH

NO

NO

Replace MAIN B’D IC100

Replace MAIN B’D IC103

Serial Flash

NO

Replace MAIN B’D

IC300, IC301 DDR2 Memory

NO

Replace MAIN B’D IC100

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Symptom

No OSD

Making

Revision

2009. 2 . 1
2/25

P800 Pin #13, 14 = 12V
P800 Pin #17, 18 = 24V ?

YES

P800 Pin #20

Voltage level = 2V ↑

YES

MAIN B’D L810 = 12V ? Replace MAIN B’D Q805

YES

Check LVDS Cable

OK ?

NO

Replace LVDS Cable

NO YES

NO

NO

YES

Check Power connector

OK ?

Replace MAIN B’D Q802

Replace Main Board

Replace Power Board

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Check RF Cable

YES

Symptom

Digital TV Video Problem

Making

Revision

2009. 2 . 1
3/25

MAIN B’D L1111 = 5V ?

NO

YES

MAIN B’D L1112 = 3.3V ?

NO

YES

MAIN B’D L1113 = 1.8V ? Replace MAIN B’D IC1105

NO

YES

MAIN B’D X1101 Clock ?

NO

Replace MAIN B’D IC808

Replace MAIN B’D IC1103

Replace MAIN B’D X1101

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Check RF Cable

YES

Symptom

Analog TV Video Problem

Making

Revision

2009. 2 . 1
4/25

MAIN B’D L1111 = 5V ?

NO

YES

MAIN B’D L1112 = 3.3V ?

NO

YES

MAIN B’D L1113 = 1.8V ? Replace MAIN B’D IC1105

NO

YES

MAIN B’D X1101 Clock ?

NO

Replace MAIN B’D IC808

Replace MAIN B’D IC1103

Replace MAIN B’D X1101

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Check Signal format

Is it supported?

Check the RCA Cable

YES

YES

Symptom

AV1 (CVBS) No Video

Problem

Making

Revision

2009. 2 . 1
5/25

Check MAIN B’D R420

Video Signal ?

YES

Check MAIN B’D C217

Video Signal ?

YES

Replace MAIN B’D IC 100

NO

NO

MAIN B’D JK402 Check Replace MAIN B’D JK402

NO

Replace

MAIN B’D C217

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Check Signal format

Is it supported?

Check the RCA Cable

YES

YES

Symptom

AV2 (CVBS) No Video

Problem

Making

Revision

2009. 2 . 1
6/25

Check MAIN B’D R465

Video Signal ?

YES

Check MAIN B’D C211

Video Signal ?

YES

Replace MAIN B’D IC 100

NO

NO

MAIN B’D JK402 Check Replace MAIN B’D JK404

NO

Replace

MAIN B’D C211

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Check Signal format

Is it supported?

Check the Component Cable

Symptom

YES

YES

Component1 No Video/
No Color Problem

Making

Revision

2009. 2 . 1

7/25

Check MAIN B’D R421

Video Signal ?

YES

Check MAIN B’D C200, C203 (Y)

C201 (Pb)
C202 (Pr)

Video Signal ?

YES

Replace MAIN B’D IC 100

NO

MAIN B’D JK402 Check Replace MAIN B’D JK402

NO

Replace

NO

MAIN B’D C200 or C203 or C201 or C202

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Check Signal format

Is it supported?

Check the Component Cable

Symptom

YES

YES

Component2 No Video/
No Color Problem

Making

Revision

2009. 2 . 1

8/25

Check MAIN B’D R422

Video Signal ?

YES

Check MAIN B’D C214, C209 (Y)

C215 (Pb)
C216 (Pr)

Video Signal ?

YES

Replace MAIN B’D IC 100

NO

MAIN B’D JK402 Check Replace MAIN B’D JK402

NO

Replace

NO

MAIN B’D C214 or C209 or C215 or C216

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Check Signal format

Is it supported?

YES

Check the RGB Cable

YES

MAIN B’D JK405 Pin #2

Video signal ?
R446 has Vsync ?
R447 has Hsync ?

YES

Symptom

NO

RGB No Video Problem

MAIN B’D JK405 Check Replace MAIN B’D JK405

NO

Making

Revision

2009. 2 . 1
9/25

Check MAIN B’D C207 (Video)

R2030 (HSYNC)
R2031 (VSYNC)

YES

Replace MAIN B’D IC 100

NO

Replace

MAIN B’D C207 or R2030 or R2031

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Check Signal format

Is it supported?

YES

Check the RGB Cable

YES

MAIN B’D JK405

Pin #3 (BLUE)

Pin #2 (GREEN)

Pin #1 (RED)

Video signal ?

YES

Check MAIN B’D C2016 (RED)

C2017 (GREEN)

C2018 (BLUE)
Video Signal ?

Symptom

NO

RGB No Color Problem

MAIN B’D JK405 Check Replace MAIN B’D JK405

NO

Replace

NO

MAIN B’D C2016 or C2017 or C2018

Making

Revision

2009. 2 . 1

10/25

YES

Replace MAIN B’D IC 100

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Check Signal format

Is it supported?

YES

Check the HDMI Cable

YES

Symptom

HDMI 1~4 All No Video Problem

Making

Revision

2009. 2 . 1

11/25

Check the ADJUST MENU

EDID OK ?

YES

Replace

MAIN B’D IC601 (HDCP KEY)

NO

Replace MAIN B’D IC 100

Download EDID

(Refer to Adjustment Spec)

NO

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Symptom

Check Signal format

Is it supported?

YES

Check the HDMI Cable

YES

Check MAIN B’D IC600

YES

MAIN B’D JACK Check

JK600 -> HDMI1
JK601 -> HDMI2
JK602 -> HDMI3
JK603 -> HDMI4

HDMI1 or 2 or 3 or 4 No Video
Problem

Making

Revision

2009. 2 . 1
12/25

Replace MAIN B’D IC 100

YES

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Symptom

All Source no Audio Problem

Making

Revision

2009. 2 . 1
13/25

Check The Speaker

YES

Check Speaker Cable

YES

MAIN B’D

L824 = 1.8V

YES

MAIN B’D

Check R701, R702, R705

Signal

YES

MAIN B’D
L705 Pin #1
L704 Pin #2

PWM Signal ?

NO

NO

NO

NO

NO

Replace Speaker

Replace Speaker Cable

Replace MAIN B’D IC807

Replace MAIN B’D IC100

Check P700 Cable

Replace MAIN B’D IC701

NO

YES

Replace MAIN B’D IC 701

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Digital TV Video OK ?

YES

Replace MAIN B’D IC 100

Symptom

Digital TV No Audio Problem

Making

Revision

2009. 2 . 1
14/25

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Analog TV Video OK ?

YES

Symptom

Analog TV No Audio Problem

Making

Revision

2009. 2 . 1
15/25

Check MAIN B’D

R2046 Signal (SIF)

NO

MAIN B’D

L1101 Signal (SIF)

YES

Replace MAIN B’D IC100

Replace MAIN B’D IC1102

NO

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

AV1 Video OK ?

YES

Check the RCA Cable

YES

Check MAIN B’D JK402 Replace MAIN B’D JK402

YES

MAIN B’D

C2011 (Right Sound)

C2012 (Left Sound)

signal ?

Symptom

NO

YES

AV1 No Audio Problem

Replace MAIN B’D IC 100

Making

Revision

2009. 2 . 1
16/25

NO

Check MAIN B’D

C229, C230

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

AV2 Video OK ?

YES

Check the RCA Cable

YES

Check MAIN B’D JK402 Replace MAIN B’D JK402

YES

MAIN B’D

C2008 (Right Sound)

C2009 (Left Sound)

signal ?

Symptom

NO

YES

AV2 No Audio Problem

Replace MAIN B’D IC 100

Making

Revision

2009. 2 . 1
17/25

NO

Check MAIN B’D

C2008, C2009

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Component Video OK ?

YES

Check the Component Cable

YES

Symptom

Component1 No Audio Problem

Making

Revision

2009. 2 . 1
18/25

Check MAIN B’D JK402 Replace MAIN B’D JK402

YES

MAIN B’D

C229 (Right Sound)

C230 (Left Sound)

signal ?

NO

Check MAIN B’D

C229, C230

NO

Replace MAIN B’D IC 100

YES

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Component Video OK ?

YES

Check the Component Cable

YES

Symptom

Component2 No Audio Problem

Making

Revision

2009. 2 . 1
19/25

Check MAIN B’D JK402 Replace MAIN B’D JK402

YES

MAIN B’D

C2013 (Right Sound)

C2014 (Left Sound)

signal ?

NO

Check MAIN B’D

C2013, C2014

NO

Replace MAIN B’D IC 100

YES

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

RGB Video OK ?

YES

Check the PC Audio Cable

YES

Symptom

RGB, HDMI-PC No Audio Problem

Making

Revision

2009. 2 . 1
20/25

Check MAIN B’D JK401 Replace MAIN B’D JK401

YES

MAIN B’D

C2015 (Right Sound)

C2016 (Left Sound)

signal ?

NO

Check MAIN B’D

C2015, C2016

NO

Replace MAIN B’D IC 100

YES

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

HDMI Video OK ?

YES

Symptom

HDMI-DTV No Audio Problem

Making

Revision

2009. 2 . 1
21/25

Check the ADJUST MENU

EDID OK ?

YES

Check the HDMI Cable

Download EDID

(Refer to Adjustment Spec)

NO

Replace MAIN B’D IC100

YES

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Symptom

SPDIF No Audio Problem

Making

Revision

2009. 2 . 1
22/25

Speaker Audio OK

NO

YES

Check the SPDIF Cable

YES

Check MAIN B’D JK403 Replace MAIN B’D JK403

NO

YES

Check MAIN B’D R2305

PWM Signal ?

NO

Replace MAIN B’D IC 100

Check the Trouble Shooting Guide

Related to Audio Problem

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Check that the USB Memory & HDD are supported by Spec

(Refer to User Manual’s USB cautions)

YES

Symptom

USB No Connect Problem

Making

Revision

2009. 2 . 1
23/25

Check MAIN B’D

JK406 OK ?

YES

Check MAIN B’D

JK406 Pin #1 5V ?

NO

Check MAIN B’D

R826 5V ?

NO

Check MAIN B’D

R848 12V ?

Replace MAIN B’D JK406

NO

Replace MAIN B’D IC 100

YES

Replace MAIN B’D IC808

YES

Replace POWER B’D

YES

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Symptom

Remote Control Problem

Making

Revision

2009. 2 . 1
24/25

Check MAIN B’D P5001

Wafer & Connector

YES

Check IR B’D P1 Wafer

& Connector

Replace it

NO

Replace IR B’D

YES

LCD TV

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Symptom

Intelligent Sensor Problem

Making

Revision

2009. 2 . 1
25/25

Check MAIN B’D P5001

Wafer & Connector

YES

Check IR B’D P1 Wafer

& Connector

Replace it

NO

Replace IR B’D

YES