LG 37LH200H Schematic

LCD TV

SERVICE MANUAL

CAUTION

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

CHASSIS : LD91Y

MODEL : 37LH200H 37LH200H-ZA

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

Internal Use Only

Printed in KoreaP/NO : MFL588584230 (1002-REV00)

LGE Internal Use OnlyCopyright © 2010 LG Electronics. Inc. All right reserved.

Only for training and service purposes

- 2 -

CONTENTS

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

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

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

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

BLOCK DIAGRAM.................................................................................. 15

EXPLODED VIEW .................................................................................. 16

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

LGE Internal Use OnlyCopyright © 2010 LG Electronics. Inc. All right reserved.

Only for training and service purposes

- 3 -

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 1 W), keep the resistor 10 mm 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 1 MΩ and 5.2 MΩ.
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 1.5 K / 10 watt resistor in parallel with a 0.15 uF 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

0.5 mA.
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

When 25A is impressed between Earth and 2nd Ground
for 1 second, Resistance must be less than 0.1

*Base on Adjustment standard

IMPORTANT SAFETY NOTICE

0.15 uF

Ω

LGE Internal Use OnlyCopyright © 2010 LG Electronics. Inc. All right reserved.

Only for training and service purposes

- 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 1.25 cm) 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

LGE Internal Use OnlyCopyright © 2010 LG Electronics. Inc. All right reserved.

Only for training and service purposes

- 5 -

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.

LGE Internal Use OnlyCopyright © 2010 LG Electronics. Inc. All right reserved.

Only for training and service purposes

- 6 -

SPECIFICATION

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

.

4. Module General Specification

1. Application range

This specification is applied to the LCD TV used LD91Y
chassis.

2. Requirement for Test

Each part is tested as below without special appointment.

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

2) Relative Humidity : 65 % ± 10 %

3) Power Voltage
: Standard input voltage (AC 100-240 V~ 50 / 60 Hz)
* 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 5 minutes prior to

the adjustment.

3. Test method

1) Performance: LGE TV test method followed

2) Demanded other specification

- Safety: CE, IEC/EN60065

- EMC:CE, IEC

No. Item Specification Remark

1 Screen Device 94 cm(37 inch) wide color display module LCD

2 Aspect Ratio 16:9

3 LCD Module 94 cm(37 inch) TFT LCD FHD LGD/AUO

4 Storage Environment Temp. : -20 deg ~ 60 deg

Humidity : 10 % ~ 90 %

5 Input Voltage AC100-240V~ 50 / 60Hz

6 Power Consumption LGD Typ : 131.88 LCD(Module) + Backlight(Lamp)

7 Module Size LGD/AUO 877 (H) x 514.6 (V) x 46.9 (D)

8 Pixel Pitch LGD 0.42675 mm(D)

AUO 0.42675 mm

9 Back Light LGD EEFL

AUO CCFL

10 Display Colors 1.06Billion(FHD LGD),16.7M (others)

11 Coating 3H, AG

5. Module optical specification

(1) LGD Modules

1) Standard Test Condition (The unit has been ‘ON’)

2) Stable for approximately 30 minutes in a dark environment at 25 ºC ± 2 ºC.

3) The values specified are at approximate distance 50 cm from the LCD surface.

4) Ta=25 °C ± 2 °C, VLCD=12.0 V, fV=60 Hz, Dclk=74.25 MHz VBR_A=1.65V, ExtVBR_B=100 %

(2) AUO Module

1) Standard Test Condition (The unit has been ‘ON’)

2) Stable for approximately 30 minutes in a dark environment at 25 ºC ± 2 ºC.

3) The values specified are at approximate distance 50 cm from the LCD surface.

4) Ta=25 °C ± 2 °C, VLCD=12.0 V, fV=60 Hz, Dclk=74.25 MHz VBR_A=1.65V, ExtVBR_B=100 %

- 7 -

LGE Internal Use OnlyCopyright © 2010 LG Electronics. Inc. All right reserved.

Only for training and service purposes

No. Item Specification Min. Typ. Max. Remark

1. Viewing Angle [CR>10] Right/Left/Up/Down 178 Degree

2. Luminance Luminance (cd/m

2

) 400 500

Variation - 1.3 MAX /MIN

3. Contrast Ratio CR 1000 1400

4. CIE Color Coordinates White Wx 0.279

Wy 0.292

RED Xr 0.639

Yr 0.334 Typ

Green Xg 0.289 ±0.03

Yg 0.606

Blue Xb 0.145

Yb 0.065

No. Item Specification Min. Typ. Max. Remark

1. Viewing Angle [CR>10] Right/Left/Up/Down 178 Degree

2. Luminance Luminance (cd/m

2

) 360 450

Variation - 1.3 MAX /MIN

3. Contrast Ratio CR 4000 5000

4. CIE Color Coordinates White Wx 0.280

Wy 0.290

RED Xr 0.640

Yr 0.330 Typ

Green Xg 0.29 ±0.03

Yg 0.6

Blue Xb 0.144

Yb 0.06

- 8 -

LGE Internal Use OnlyCopyright © 2010 LG Electronics. Inc. All right reserved.

Only for training and service purposes

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

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 67.5 60 HDTV 1080p

No

Specification

Proposed Remark

Resolution H-freq(kHz) V-freq(Hz) Pixel Clock(MHz)

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 60 Hz

-> 640*480 60 Hz 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

7. RGB (PC)

- 9 -

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Only for training and service purposes

8. HDMI Input (PC/DTV)

(1) DTV Mode

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

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/FHD model

8. 1920*1080 67.5 60.00 138.625 WUXGA HDCP/FHD model

(2) PC Mode

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

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 59.94/60 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

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Only for training and service purposes

- 10 -

ADJUSTMENT INSTRUCTION

1. Application Range

This specification sheet is applied to all of the LCD TV with
LD91Y 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 ºC ± 5 ºC
Relative humidity : 65 % ± 10 %
Input voltage : 220 V, 60 Hz

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

110), DDC Adjustment Jig equipment, service remote
control.

7) Push the “IN STOP” key - For memory initialization.

3. Main PCB check process

* APC - After Manual-Insult, executing APC

* 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.

* 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”

filexxx.bin

(4)

(7) ……….OK

(5)

(6)

(1)

fil exxx.bi n

(2)

(3)

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

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 “I n-stop” key.

Case2 : Function check at the assembly line

1. When TV set is entering on the assembly line, Push
“In-stop” 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) Updating is staring.

5) Fishing the version uploading, you have to put USB stick
and “AC Power” off.

6) After putting “AC Power” on and check updated version on
your TV.

* 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 hax their number)

4) Completed selecting Tool option.

3.1. ADC Process

(1) ADC

• Input signal : Component 480i

• Signal equipment displays.

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

- RGB 1024x768 @60 Hz
Using the Inner Pattern

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

• Enter Internal ADC mode by pushing “

G

” key at “5. ADC

Calibration”

<Caution> Using ‘power on’ button of the Adjustment R/C ,

power on TV.

* ADC Calibration Protocol (RS232)

Adjust Sequence

• aa 00 00 [Enter Adjust Mode]

• xb 00 40 [Component1 Input (480i)]

• ad 00 10 [Adjust 480i Comp1]

• xb 00 60 [RGB Input (1024*768)]

• ad 00 10 [Adjust 1024*768 RGB]

• aa 00 90 End Adjust mode
* Required equipment : Adjustment R/C.

- 11 -

LGE Internal Use OnlyCopyright © 2010 LG Electronics. Inc. All right reserved.

Only for training and service purposes

Module Tool option1 Tool option2 Tool option3 Tool option4

LGD V4 20545 1569 50976 3584

Item CMD1 CMD2 Data0

Adjust A A 0 0 When transfer the ‘Mode In’,

‘Mode In’ Carry the command.

ADC Adjust A D 1 0 Automatically adjustment

(The use of a internal pattern)

Adjustment pattern

3.2. Function Check

* Check display and sound

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

1) TV

2) AV (SCART1/SCART2/ CVBS)

3) COMPONENT (480i)

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

5) HDMI

6) PC Audio In
* Display and Sound check is executed by Remote control.

<Caution> Not to push the INSTOP key after completion if the

function inspection

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.

* Auto-control interface and directions

1) Adjust in the place where the influx of light like floodlight

around is blocked. (illumination is less than 10 lux).

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 5minutes.

- Using ‘no signal’ or ‘full white pattern’ or the others,
check the back light on.

• Auto adjustment Map(RS-232C)
RS-232C COMMAND
[CMD ID DATA]

Wb 00 00 White Balance Start
Wb 00 ff White Balance End

** 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 “

G

” key at “6. White

Balance”.

* After done all adjustments, Press “In-start” key 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.

And Mechanical power switch must be set “ON”.

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.

- 12 -

LGE Internal Use OnlyCopyright © 2010 LG Electronics. Inc. All right reserved.

Only for training and service purposes

Cool 11,000 ºK X=0.276(±0.002)

Y=0.283(±0.002) <Test Signal>

Medium 9,300 ºK X=0.285(±0.002) Inner pattern

Y=0.293(±0.002) (216gray,85IRE)

Warm 6,500 ºK X=0.313(±0.002)

Y=0.329(±0.002)

Full White Pattern

COLOR
ANALYZER
TYPE: CA-210

RS-232C Communication

CA-210

RS-232C COMMAND MIN CENTER MAX

[CMD ID DATA] (DEFAULT)

Cool Mid Warm Cool Mid Warm

R Gain jg Ja jd 00 172 192 192 192

G Gain jh Jb je 00 172 192 192 192

B Gain ji Jc jf 00 192 192 172 192

R Cut 64 64 64 128

G Cut 64 64 64 128

B Cut 64 64 64 128

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

- Auto Download

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

• Enter EDID D/L mode.

• Enter “START” by pushing “OK” key.

* Edid data and Model option download (RS232)

- Manual Download

* Caution

1) Use the proper signal cable for EDID Download

- Analog EDID : Pin3 exists

- Digital EDID : Pin3 exists

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

3) Use the proper cables below for EDID Writing

4) Download HDMI1, HDMI2, separately because HDMI1 is
different from HDMI2.

(1) FHD RGB EDID data

(2) FHD HDMI EDID data

* Detail EDID Options are below

ⓐ Product ID

ⓑ Serial No: Controlled on production line.
ⓒ Month, Year: Controlled on production line:

ex) Monthly : ‘02’ -> ‘02’

Year : ‘2009’ -> ‘13’

ⓓ Model Name(Hex):

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

Model Name HEX EDID Table DDC Function

FHD Model 0001 01 00 Analog/Digital

HD Model 0000 00 00 Analog/Digital

LGE Internal Use OnlyCopyright © 2010 LG Electronics. Inc. All right reserved.

Only for training and service purposes

- 13 -

MODEL MODEL NAME(HEX)

all 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20

Item

Manufacturer ID

Version

Revision

Condition

GSM

Digital : 1

Digital : 3

Data(Hex)

1E6D

01

03

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

For HDMI EDIDFor Analog EDID

INPUT MODEL NAME(HEX)

HDMI1 67030C001000B82D

HDMI2 67030C002000B82D

012 3 4 5 67 8 9 ABCD EF

00 00 FF FF FF FF FF FF 00 1E 6D ⓐⓑ
10 ⓒ 01 03 68 73 41 78 0A CF 74 A3 57 4C B0 23

20 09 48 4C A1 08 00 81 80 61 40 45 40 31 40 01 01

30 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C

40 45 00 7E 8A 42 00 00 1E 01 1D 00 72 51 D0 1E 20

50 6E 28 55 00 7E 8A 42 00 00 1E 00 00 00 FD 00 3A
60 3E 1E 53 10 00 0A 20 20 20 20 20 20 ⓓ
70 ⓓ 00 ⓔ

80 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

90 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

A0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

B0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

C0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

D0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

E0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

F0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

012 3 4 5 67 8 9 ABCD EF

00 00 FF FF FF FF FF FF 00 1E 6D ⓐⓑ
10 ⓒ 01 03 80 73 41 78 0A CF 74 A3 57 4C B0 23

20 09 48 4C A1 08 00 81 80 61 40 45 40 31 40 01 01

30 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C

40 45 00 7E 8A 42 00 00 1E 01 1D 00 72 51 D0 1E 20

50 6E 28 55 00 7E 8A 42 00 00 1E 00 00 00 FD 00 3A
60 3E 1E 53 10 00 0A 20 20 20 20 20 20 ⓓ
70 ⓓ 01 ⓔ

80 02 03 26 F1 4E 10 1F 84 13 05 14 03 02 12 20 21
90 22 15 01 26 15 07 50 09 57 07 ⓕ
A0 ⓕ E3 05 03 01 01 1D 80 18 71 1C 16 20 58 2C

B0 25 00 7E 8A 42 00 00 9E 01 1D 00 80 51 D0 0C 20

C0 40 80 35 00 7E 8A 42 00 00 1E 02 3A 80 18 71 38

D0 2D 40 58 2C 45 00 7E 8A 42 00 00 1E 66 21 50 B0

E0 51 00 1B 30 40 70 36 00 7E 8A 42 00 00 1E 00 00

F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 F9

NO Item CMD1 CMD2 Data0

Enter download Download A A 0 0 When transfer the ‘Mode In’,

Mode ‘Mode In’ Carry the command.

EDID data and Download A E 00 10 Automatically Download

Model option (The use of a internal pattern)

download

- 14 -

LGE Internal Use OnlyCopyright © 2010 LG Electronics. Inc. All right reserved.

Only for training and service purposes

4.5. Outgoing condition Configuration

- When pressing IN-STOP key by Service remote control, Red
LED are blinked alternatively. And then automatically turn off.

(Must not AC power OFF during blinking)

4.6. Internal pressure

Confirm whether is normal or not when between power
board’s ac block and GND is impacted on 1.5 kV(dc) or 2.2
kV(dc) for one second

5. Model name & Serial number D/L

• press “Power on” key of service remocon.

(Baud rate : 115200 bps)

• Connect RS232 Signal Cable to RS-232 Jack.

• Write Serial number by use RS-232.

• Must check the serial number at the Diagnostics of SET UP
menu. (Refer to below).

5.1. Signal TABLE

CMD : A0h
LENGTH : 85~94h (1~16 bytes)
ADH : EEPROM Sub Address high (00~1F)
ADL : EEPROM Sub Address low (00~FF)
Data : Write data
CS : CMD + LENGTH + ADH + ADL + Data_1 +…+ Data_n
Delay : 20ms

5.2. Command Set

* Description

FOS Default write : <7mode data> write
Vtotal, V_Frequency, Sync_Polarity, Htotal, Hstart, Vstart, 0,
Phase
Data write : Model Name and Serial Number write in

EEPROM,.

5.3. Method & notice

A. Serial number D/L is using of scan equipment.
B. Setting of scan equipment operated by Manufacturing

Technology Group.

C. Serial number D/L must be conformed when it is produced

in production line, because serial number D/L is mandatory
by D-book 4.0.

* Manual Download (Model Name and Serial Number)

If the TV set is downloaded by OTA or Service man,
sometimes model name or serial number is initialized.(Not
always)
There is impossible to download by bar code scan, so It need
Manual download.

1) Press the ‘instart’ key of ADJ remote control.

2) Go to the menu ‘5.Model Number D/L’ like below photo.

3) Input the Factory model name(ex 42LH4000-ZA) or Serial
number like photo.

4) Check the model name Instart menu -> Factory name
displayed (ex 42LH4000-ZA)

5) Check the Diagnostics (DTV country only) ->s Buyer model
displayed (ex 42LH4000)

CMD LENGTH ADH ADL DATA_1 . . . Data_n CS DELAY

No. Adjust mode CMD(hex) LENGTH(hex

)

Description

1

EEPROM WRITE

A0h

84h+n

n-bytes Write (n = 1~16)

BLOCK DIAGRAM

- 15 -

LGE Internal Use OnlyCopyright © 2010 LG Electronics. Inc. All right reserved.

Only for training and service purposes

- 16 -

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

Only for training and service purposes

200

A5

801

LV1

A2

A10

802

803

400

900

530

550

200T

300

120

510

500

560

804

805

521

540

806

Option

Option

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

NAND FLASH MEMORY

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

/PF_CE0

H : Serial Flash

L : NAND Flash

/PF_CE1

H : 16 bit

L : 8 bit

PF_WP

Serial FLASH MEMORY

for BOOT

+3.3V

R104

R101
0

Flash_WP_1

R102
0

B

OPT

HDCP EEPROM

CAT24WC08W-T

R158

4.7K

A0

1

A1

2

A2

3

VSS

4

I2C

POWER DETECT

+3.3V

1KR105

1K

3.9KR111

OPT

/F_RB

R1540

/PF_OE

/PF_CE0

1KR112

C103

OPT

0.1uF

/PF_CE1

PF_ALE

/PF_WE

+3.3V

R151

0

R1509

B

0

OPT

+3.3V

W25X32VSSIGE

4.7K

R1533

R1530

CS

1

DO

2

33

WP

3

GND

4

SPI_CS

SPI_DO

10K

C

Q101
KRC103S

OPT

E

+5V_ST

IC107

VCC

8

$0.199

WP

7

SCL

6

SDA

5

4.7KR109

R161

+5V_GENERAL

4.7K

FE_TUNER_SDA

FE_TUNER_SCL
FE_DEMOD_SDA
FE_DEMOD_SCL

SDA_SUB/AMP SDA1
SCL_SUB/AMP

R1504

R103

C

E

22

R1505

10K

Q100
KRC103S

OPT

IC103

$0.76

C114

0.1uF

22R171

4.7K

1K

R1539

+3.3V

VCC

8

OPT

HOLD

7

CLK

6

DIO

5

L102

SPI_CK

SPI_DI

Addr:10101--

EEPROM_SCL
EEPROM_SDA

+3.3V

1.2K

R1507

1.2K

R1506

0R128
0R129

R1503

2.2K

R1502

2.2K

VCC_1

VSS_1

NC_10

NC_11

NC_12

NC_13

NC_14

NC_15

NC_1

NC_2

NC_3

NC_4

NC_5

NC_6

NC_7

NC_8

NC_9

CLE

ALE

C104

0.1uF

R/B

RE

CE

WE

WP

R124

HY27US08121B-TPCB

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

+5V_ST

4.7K

R125

100Hz

100Hz

1386 WON

4.7K

0R1654
0R1655

IC102

OPT

EEPROM

M24512-WMW6

E0

1

E1

2

E2

3

R100

VSS

0

4

MCU BOOT STRAP

10 : BOOT 51

11 : BOOT RISC

R198

1K

R199

1K

OPT

EEPROM_SDA

EEPROM_SCL

MEMC_SDA

MEMC_SCL

SCL1

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

IC105

$0.418

+3.3V

R1501

1K

R1500
1K
OPT

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

+3.3V

C105

10uF 6.3V

PCM_A[0-7]

AR102

PCM_A[7]

PCM_A[6]

PCM_A[5]

PCM_A[4]

22

0.1uFC106

AR103

PCM_A[3]

PCM_A[2]

PCM_A[1]

PCM_A[0]

22

IC105: EAN43352801(ATMEL SHRINK)

+5V_ST

0IMMRMP008A(MICROCHIP)

VCC

8

WC

7

SCL

6

SDA

5

C107

8pF

OPT

C108
8pF

C100

0.1uF

22

R110

OPT

EEPROM_SCL

EEPROM_SDA

22R113

DIMMING

R1545

100

PWM0

100

PWM2PWM_DIM

PWM0
PWM1

A_DIM

C1500

1uF
OPT

C1501

2.2uF
OPT

R1544

MODEL OPTION

PIN NAME

MODEL_OPT_0

MODEL_OPT_1

MODEL_OPT_2

MODEL_OPT_3

MODEL OPTION

PIN NO.

B9(FHD)

D7

B9(HD)
E11

D6

LED_NORMAL LED_MOVING

B9

HIGH

LCD
FRC

FHD

LOW

NO_FRC
LVDS_ALVDS_B

PDP

HD

+3.3V

VOLTAGE DETECTOR

*Mstar reset:Active high reset

+3.3V

R107
470

C102

10uF

6.3V

IC101

KIA7427F

OUT

3

1

2

GND

/PF_CE0
/PF_CE1

/PF_OE
/PF_WE
PF_ALE

PF_WP
/F_RB

C101

0.022uF

VCC

16V

R115
10K

AR101

S6_EEPROM_SCL

S6_EEPROM_SDA

FE_DEMOD_SDA
FE_DEMOD_SCL

ISP_RXD

ISP_TXD
MST_DBG_RX
MST_DBG_TX

SOC_RESET

22

PCM_D[0-7]

PCM_A[0-14]

/PCM_WAIT

AR100

MODEL_OPT_1

MODEL_OPT_2

ERROR_OUT
MODEL_OPT_0

COMP_DET

DSUB_DET

PCM_RST

/PCM_CD

/PCM_OE

/PCM_REG

/PCM_IRQA

/PCM_WE
/PCM_IOWR
/PCM_IORD

/PCM_CE

22

KEY1
KEY2

MST_IR

SUBAMP_SD

AMP_RST

NTP_MUTE

PWM0+3.3V_TUNER
PWM1

PWM2

OPT

0

R1541

0 R116

R162
R163

R164
R165

R140

PCM_A[0]
PCM_A[1]
PCM_A[2]
PCM_A[3]
PCM_A[4]
PCM_A[5]
PCM_A[6]
PCM_A[7]
PCM_A[8]
PCM_A[9]
PCM_A[10]
PCM_A[11]
PCM_A[12]
PCM_A[13]
PCM_A[14]

R1657

R108

R157

R160

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

0
0
0
0

22
22R141
22R142
22R143

OPT

OPT
OPT

LGE3369A (SATURN6 NON RM)

D4

HWRESET

AC16

PCMD0/CI_D0

AA15

PCMD1/CI_D1

AA16

PCMD2/CI_D2

AC6

PCMD3/CI_D3

Y10

PCMD4/CI_D4

Y11

PCMD5/CI_D5

Y12

PCMD6/CI_D6

Y13

PCMD7/CI_D7

AB16

PCM_A0/CI_A0

AC15

PCM_A1/CI_A1

AC14

PCM_A2/CI_A2

AB14

PCM_A3/CI_A3

AC12

PCM_A4/CI_A4

AB8

PCM_A5/CI_A5

AC13

PCM_A6/CI_A6

AA9

PCM_A7/CI_A7

AB5

PCM_A8/CI_A8

AA4

PCM_A9/CI_A9

V4

PCM_A10/CI_A10

Y4

PCM_A11/CI_A11

AB9

PCM_A12/CI_A12

AA7

PCM_A13/CI_A13

AD6

PCM_A14/CI_A14

AA14

33R1510

PCM_RST/CI_RST

AB18

33R1511

PCM_CD/CI_CD

Y5

33R1512

/PCM_OE

AB15

33R1513

PCM_REG/CI_CLK

AA10

33R1514

PCM_WAIT/CI_WACK

AC8

33R1515

/PCM_IRQA

AC7

33R1516

/PCM_WE

AA5

33R1517

PCM_IOWR/CI_WR

W4

33R1518

PCM_IOR/CI_RD

T4

33R1519

/PCM_CE

AE6

/PF_CE0

AF6

/PF_CE1

AA12

/PF_OE

AA11

/PF_WE

AC9

PF_ALE

Y14

PF_AD15

AB11

F_RBZ

F8

UART2_TX/SCKM

D11

UART2_RX/SDAM

AB21

DDCR_DA

AC21

DDCR_CK

J1

DDCA_CLK

J2

DDCA_DA

W5

UART_RX2

V5

UART_TX2

AB13

PWM0

AB12

PWM1

AD12

PWM2

AA13

100

0R1645
0R1646

100

100
0R189

0R168

100
100R166

0R126

100R148

100R147

0R146

PWM3

A4

SAR0

B4

SAR1

F4

SAR2

E4

SAR3

C4

IRIN

AC11

GPIO44

D9

GPIO96

D10

GPIO88

D7

GPIO90/I2S_OUT_MUTE

E11

GPIO91

E8

GPIO97

E10

GPIO98

D6

GPIO99

D5

GPIO103/I2S_OUT_SD3

C5

GPIO102

IC100

TESTPIN/GND

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

LHSYNC2/I2S_OUT_MUTE/RX1

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

SPI_DO
/SPI_CS
SPI_CK

USB_DP_1
USB_DM_1
USB_DM_2

USB_DP_2

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

XOUT

SPI_DI

080923_Time Delay

X100
12MHz

C111

SPI_DI
SPI_DO

SPI_CS

SPI_CK

20pF

C112
20pF

R196

OPT

REAR_USB_DM

REAR_USB_DP

R197

15K

15K
OPT

SIDE_USB_DM

SIDE_USB_DP

SIDE_USB

R193

B3

XIN

A3

E6

AE11
AF12
AE12
AD11

B5
A5
AC10
AB10

1M

0R172

0R173

33R1524

33R1525
33R1526

19~22"

0R174

19~22"

0R175

26~52"

0R178

26~52"

0R179

R132

R133

15K

15K
OPT

OPT

+5V_ST

R1656
E5
F5
G5
H5
F6
G6
H6
AC17
AB17
AF11
AA18
AA17

E7
AC18
C6
F9
F10
A6
B6
AF5
AF10

AA8
Y8
Y9
AB7
AA6
AB6
U4
AC5
AC4
AD5
AB4

AB19
AA20
AC19
AA19

C10
B11
A9
C11
C9
B10
A10
B9
A11

R188
R167

R159
R1535
R1536

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

0R1647
100R1648
100R1649
100R1650
0R1651
100R1652
0R1653
100
100

100
0
0

22R1537
100R1534
22R1538
100R119

OPT

22R169
22R170

100R1542

OPT

OPT

OPT

OPC

OPT

100R154
100R177
0R1546

OPT
100R114
100R106

OPT

100R190
100R191

OPT

100R153

4.7K

MST_NEC_TX
INV_CTL
PANEL_CTL

MST_NEC_RX
POWER_DET
LVDS_SEL
FE_BOOSTER_CTL
Flash_WP_1
SDA1
SCL1

Interrupt for ISP Wake up in STB Mode

FE_TUNER_SCL

OPC_EN

FE_TUNER_SDA

SUBAMP_MUTE

USB_OCD

5V_HDMI_1

5V_HDMI_2

PCM_5V_CTL

CI_TS_SYN

CI_TS_VAL

CI_TS_CLK

BUF_TS_DATA[0]
BUF_TS_SYN

BUF_TS_VAL_ERR

BUF_TS_CLK

EXT_VOL+

EXT_VOL-

SIDE_HP_MUTE

HP_DET

BIT_SEL

MODEL_OPT_3
SCART1_DET

CI_TS_DATA[0-7]

+24V/+15V +12V/+15V

+5V_ST

19~32"(24V POWER_DET)

R1508

1.8K

19~22"

R1521

3.9K
1%

26~32"(24V POWER_DET)

R1527
1K
1%

37~47"(12V POWER_DET)

R1528

2.7K

1%

R1529

1.8K

37~47"(12V POWER_DET)

KIA7042AF

I

1

IC1500

2

R1543

10K

O

3

G

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_DET

MEMC_RESET

FE_AGC_SPEED_CTL

/FE_RESET

R1600

100Hz

R1603

3.3K
FHD

R1605

3.3K

LED_NORMAL

FRC/LVDS_B

R1607

3.3K

LCD
R1609

3.3K

MODEL_OPT_0

100

OPT

100R1601

100R1611

NO_FRC/LVDS_A

R1606

R1604

3.3K
LED_MOVING

HD

3.3K

R1608

3.3K

PDP

R1610

3.3K

MODEL_OPT_1

MODEL_OPT_2

MODEL_OPT_3

GPIO67
GPIO68

+3.3V

R152

4.7K
OPT

A7
B8

R155

100R192

100

USB_CTL

SCART1_MUTE

LP91Y xxLH200H-ZA

EAX61527901

MSTAR_1

2009.10.08
1 12

+1.26V_VDDC

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

HDMI

CK+_HDMI1
CK-_HDMI1
D0+_HDMI1
D0-_HDMI1
D1+_HDMI1
D1-_HDMI1
D2+_HDMI1
D2-_HDMI1
DDC_SDA_1
DDC_SCL_1

CK+_HDMI2
CK-_HDMI2
D0+_HDMI2
D0-_HDMI2
D1+_HDMI2
D1-_HDMI2
D2+_HDMI2
D2-_HDMI2
DDC_SDA_2
DDC_SCL_2

MST_HDMI_CEC

SCART_RGB

SC1_CVBS_IN

DSUB

DSUB_HSYNC
DSUB_VSYNC

DSUB_R
DSUB_G
DSUB_B

COMP

COMP_Pr
COMP_Y

COMP_Pb

SC1_CVBS_IN

CVBS

TV/MNT

FE_VMAIN

TV/DTV_VOUT

SC1_ID

SC1_FB

SC1_R
SC1_G
SC1_B

HPD1

HPD2

R243

C2043

10uF

C2044

10uF

C243

0.1uF

C246

0.1uF

C249

0.1uF

C252

0.1uF

C257

0.1uF

C264

0.1uF

C275

0.1uF

C281

0.1uF

C289

0.1uF

C294

0.1uF

C297

0.1uF

C2000

0.1uF

C2001

0.1uF

C2003

0.1uF

C2005

0.1uF

C2031

0.1uF

C2032

0.1uF

C2033

0.1uF

C2034

0.1uF

C2035

0.1uF

C2036

0.1uF

C2037

0.1uF

C2038

0.1uF

C2039

0.1uF

C2040

0.1uF

C2041

0.1uF

C2042

0.1uF

+1.8V_DDR

C245

C248

0.1uF

AUDIO IN

22K

R256

C2023

C258

0.1uF

0.01uF

C251

0.1uF

R257

22K

C253

0.1uF

LVDS OUT

0.1uF

0.01uF

C236
22pF

OPT

R254

C242

0.1uF

0.1uF

C265

C276

0.1uF

0.1uF

22K

22K

R255

0.01uF

C2021

C237
22pF

OPT

C238
22pF
OPT

C2022

0.01uF

C239
22pF

OPT

C2027

10uF

+3.3V

L210

BLM18PG121SN1D

C2004

0.1uF

LGE3369A (Saturn6 Non RM)

F1

RXACKP

F2

RXACKN

G2

RXA0P

G3

RXA0N

H3

RXA1P

G1

RXA1N

H1

RXA2P

H2

RXA2N
0R207
0R208
100

R247

0R201
0R202
100

R203

100

R204

47

R210

47

R211

R213
R214
R215

R217

R244

10K

10K

R218
R219

R221

R222

R224
R225

R228

100
100

R209

0.047uFC200

C201

47R212

0.047uF

47

0.047uF

C202

470

1000pF

C203

47

0.047uFC204

C205

47R216

0.047uF

47

0.047uF

C206

22R246
22R245

0.047uF

C212

47

C207

0.047uF

47

0.047uF

C213

47R220
470

1000pF

C208

0.047uF

C214

47
47R223

C215

0.047uF

0.047uF

C216

47
470

1000pF

C209

47R205

47R227

0.047uFC210

0.047uFC218

0.047uFC202447R235

0.047uFC201947R236

0.047uFC221

0.047uFC222

OPT

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

0R200
0R206

CVBSOUT0/SC2_MNTOUT

AA2

CVBSOUT1

IC100

LVACKM

LVBCKM

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

LVA0P

LVA0M

LVA1P

LVA1M

LVA2P

LVA2M

LVA3P

LVA3M

LVA4P

LVA4M

LVACKP

LVB0P

LVB0M

LVB1P

LVB1M

LVB2P

LVB2M

LVB3P

LVB3M

LVB4P

LVB4M

LVBCKP

VCLAMP

AUCOM
AUVRM

AUVRP

AUVAG

AUR0
AUL0
AUR1
AUL1
AUR2

AUL2

AUR3
AUL3
AUR4
AUL4
AUR5
AUL5

SIF0P

SIF0M

REFP

REFM

REXT

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

C223

H4
J4
G4

R229

Check
AE5
AE4
AF4
AD4

R267

22

R268

22

R269

22

R270

22

R271

22

R272

22

R273

22

R275

22

R258

22

R259

22

R260

22

R261

22

R276

22

R277

22

R278

22

R279

22

R280

22

R281

22

R282

22

R283

22

R262

22

R263

22

R264

22

R265

22

C230
C2006
C2007

C2013

R237
R238
R239
R240
R250
R251

0.1uF

390

1%

+3.3V

as close as possible

0.1uFC224

10uF

C225

0.1uFC226

C227

1uF

4.7uFC228

Close to IC

C233

0.1uF

6.3V

2.2uFC229

2.2uF

2.2uF

2.2uF

2.2uF

2.2uFC2014

2.2uFC2015

2.2uFC2016

0.1uFC231

0.1uFC232

100R230

100
100
100
100
100
100

22R231
22R232
22R233
22R234

R241

C2017

0.1uFC234

0.01uF

0.1uFC235

R252

47
47R242

22K

C2018

0.01uF

LVA_CKM

LVB_CKM

22K

R253

C2026

LVA_0P

LVA_0M

LVA_1P

LVA_1M

LVA_2P

LVA_2M

LVA_3P

LVA_3M

LVA_4P

LVA_4M

LVA_CKP

LVB_0P

LVB_0M

LVB_1P

LVB_1M

LVB_2P

LVB_2M

LVB_3P

LVB_3M

LVB_4P

LVB_4M

LVB_CKP

SC1_R_IN
SC1_L_IN

COMP_R_IN
COMP_L_IN
PC_R_IN
PC_L_IN

FE_SIF

C2020

C254

0.1uF

C250

0.1uF

C259

0.1uF

C266

0.1uF

C247

C244

0.1uF

0.1uF

SPDIF_OUT

HP_ROUT

HP_LOUT

SCART1_Rout
SCART1_Lout

EXT_R_AMP

EXT_L_AMP

AUDIO_MASTER_CLK

MS_LRCK
MS_SCK
MS_LRCH

C277

0.1uF

+3.3V_VDDP

C241

0.1uF

C283

0.1uF

C291

0.1uF

AUDIO OUT

C296

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

IC100

AVDD_MEMPLL_1
AVDD_MEMPLL_2
AVDD_MEMPLL_3

VDDC_10
VDDC_11
VDDC_12
VDDC_13
VDDC_14
VDDC_15

VDDC_16
VDDC_17
VDDC_18
VDDC_19
VDDC_20
VDDC_21
VDDC_22
VDDC_23
VDDC_24
VDDC_25
VDDC_26
VDDC_27

AVDD_AU

AVDD_DDR_1
AVDD_DDR_2
AVDD_DDR_3
AVDD_DDR_4
AVDD_DDR_5
AVDD_DDR_6
AVDD_DDR_7
AVDD_DDR_8

AVDD_DDR_9
AVDD_DDR_10
AVDD_DDR_11

AVDD_LPLL

AVDD_MPLL

AVDD_33_1
AVDD_33_2
AVDD_33_3
AVDD_33_4
AVDD_33_5

AVDD_DM

AVDD_USB

LGE3369A (Saturn6 Non RM)

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

VDDC_1
VDDC_2
VDDC_3
VDDC_4
VDDC_5
VDDC_6
VDDC_7
VDDC_8
VDDC_9

VDDP_1
VDDP_2
VDDP_3
VDDP_4
VDDP_5
VDDP_6
VDDP_7
VDDP_8

+1.26V_VDDC

D16
D17
D18
D19
D20
H18
H19
H20
J20
K20
L20
M20
P7
R7
T7
T22
U7
U20
U22
V7
V22
W11
W12
W19
W20
W22
Y22

H9
H10
H11
H12
N20
P20
W9
W10

W7

+1.8V_DDR

G12
G13
H13
H14
H15
H16
W14
W15
W16
W17
W18

H17
T20
V20

R20

H7

J7
K7
L7
M7
N7

W8

H8

+3.3V_VDDP

+3.3V_S6

C263

0.1uF

+3.3V_S6

VDDC : 970mA

VDDP : 102.3mA

C284

0.1uF

C262

C269

0.1uF

0.1uF

+3.3V_AVDD_MPLL

C2025

C2029

10uF

0.1uF

6.3V

C271

C274

0.1uF

0.1uF

C256

0.1uF

AVDD_OTG : 22.96mA

+3.3V_S6

C260

0.1uF

L209

BLM18PG121SN1D

AVDD_MEMPLL : 23.77mA

C273

0.1uF

+3.3V_S6

C279

0.1uF

C267

0.1uF

+3.3V_S6

+3.3V

C293

0.1uF

L206

BLM18PG121SN1D

C2030

AVDD_DM : 0.03mA

0.1uF

+3.3V

AVDD_AU : 36.11mA

AVDD_LPLL : 4.69mA

AVDD_33 : 281mA

+3.3V_AVDD

C286

0.1uF

+3.3V_AVDD_MPLL

L207

BLM18PG121SN1D

C295

0.1uF
16V

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.

EAX61527901

MSTAR_2

LP91Y xxLH200H-ZA

2009.10.08
2 12

DDR2 1.8V By CAP - Place these Caps near Memory

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

+1.8V_DDR +1.8V_DDR

SDDR_D[0-15]

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

+1.8V_DDR

HY5PS1G1631CFP-S6

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

IC300

C302

0.1uF
C303

10uF

C304

0.1uF

C305

0.1uF

C306

0.1uF

C307

0.1uF

C308

0.1uF

C310

0.1uF

C312

0.1uF

C313

0.1uF

C314

0.1uF

C315

0.1uF

C316

0.1uF

C317

0.1uF

C318

0.1uF

C319

0.1uF

C320

0.1uF

C323

0.1uF
C324

10uF

C325

0.1uF

C326

0.1uF

C327

0.1uF

C328

0.1uF

C329

0.1uF

C330

0.1uF

C331

0.1uF

C332

0.1uF

C334

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

1%
1K

R301

0.1uF

0.1uF

C300

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[10]
SDDR_A[11]
SDDR_A[12]

R350

OPT

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

SDDR_CK

/SDDR_CK

SDDR_CKE ADDR2_CKE

0

OPT

4.7KR347
/SDDR_RAS

/SDDR_CAS

/SDDR_WE

SDDR_DQS0_P
SDDR_DQS1_P

SDDR_DQM0_P
SDDR_DQM1_P

SDDR_DQS0_N
SDDR_DQS1_N

+1.8V_DDR

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

1K 1%R302

C301

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

56

56

AR301

AR302

56

R319

56
56R320

ADDR2_DQM0_P
ADDR2_DQM1_P

ADDR2_DQS0_N
ADDR2_DQS1_N

AR306

56

AR307

56

AR308

56
AR309

56

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]

56 R303
56 R304
56 R305

22 R306

OPT

150

R300

22 R307

56 R308

OPT

+1.8V_DDR

4.7KR346
56 R309

SDDR_ODT

56 R310 56R334
56 R311
56 R312

56 R313
56 R314 56R338

56 R315
56 R316

56 R317
56 R318

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_D[11]
ADDR2_D[12]

ADDR2_D[9]

ADDR2_D[14]

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

ADDR2_D[15]

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

ADDR2_D[7]

ADDR2_D[0]

ADDR2_D[2]

ADDR2_D[5]

+1.8V_DDR

R321

R322

1K 1%

0.1uF

1K 1%

C309

ADDR2_A[0-12]

ADDR2_D[0-15]

0.1uF

LGE3369A (Saturn6 Non RM)

C311

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]

AR303

56R325
56R326

56

AR305

56

56

56

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]

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]

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_P
BDDR2_DQS1_P

BDDR2_DQM0_P
BDDR2_DQM1_P

BDDR2_DQS0_N
BDDR2_DQS1_N

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]

AR311

AR313

AR304

AR310

56

56

OPT

AR312

+1.8V_DDR

+1.8V_DDR

1K1%R345

C333

C335

0.1uF

TDDR_A[0-12]

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

OPT

150

R344

TDDR_CKE

OPT

R349
/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

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[10]
TDDR_A[11]
TDDR_A[12]

TDDR_MCLK

/TDDR_MCLK

4.7KR348

OPT

4.7K

R351

A10/AP

0

VSSDL

LDQS
UDQS

LDQS
UDQS

VDDL

VREF

A0
A1
A2
A3
A4
A5
A6
A7
A8
A9

A11
A12

BA0
BA1
NC4

CK
CK

CKE

ODT

CS
RAS
CAS

WE

LDM

UDM

NC5
NC6

NC1
NC2
NC3

1K1%R343

56R327
56R328
56R329

22R330

22R331

56R332

56R333

56R335
56R336

56R337

56R339
56R340

56R341
56R342

IC301

H5PS5162FFR-S6C

J2

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

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

TDDR_D[0-15]

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

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

LP91Y xxLH200H-ZA

2009.06.09EAX61527901
3 12

RS232C

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

C429

0.33uF
C1+

16V

V+

C430

0.047uF

0.33uF

C428

C1-

25V

C2+

C2-

16V

C425

0.33uF

V-

16V

DOUT2

RIN2

COMPONENT

JK400

PPJ229-01

1

2

3

4

5

IC403

6

MAX3232CDR

7

8

2A [GN]1P_CAN

4A [GN]CONTACT

3A [GN]O_SPRING

2B [BL]1P_CAN

5B [BL]C_LUG_L

2C [RD]1P_CAN1

5C [RD]C_LUG_L

2D [WH]1P_CAN

5D [WH]C_LUG_L

2E [RD]1P_CAN2

4E [RD]CONTACT

3E [RD]O_SPRING

16

15

14

13

12

11

10

+3.3V

+5V_ST

L1402

VCC

C431

0.1uF

GND

16V

DOUT1

RIN1

ROUT1

DIN1

DIN2

ROUT2

9

R460
100

R459
100

IR_OUT_RS232C

D424

30V

OPT

+5V_ST

D423
30V

220pF

OPT

R458

6.2K

C426

50V

R457

6.2K

C427
220pF
50V

UART_RX

UART_TX

EXT_5V

D403
BAP70-02

50V
R439

47K
OPT

OPT
R485
0

R461
0

EXT_12V

EXT_12V_9P

R484
0

EXT_5V_7P

R465
1K

R483
0

10

9

8

7

6

P401

SPG07150941

5

4

3

2

1

USB

R418

4.7K

D412

5.6V

AMOTECH

D407
30V

AMOTECH

D408
30V

AMOTECH

D409
30V

AMOTECH

D410

5.6V

AMOTECH

D411

5.6V

AMOTECH

R425
1K

R419
0

R429
470K

R426

R427
75

R428
75

R430
470K

COMP_DET

COMP_Y

75
1%

COMP_Pb

1%

COMP_Pr

1%

R432
10K

C415
1000pF
50V

R431
10K

C417
1000pF
50V

R434
12K

R433
12K

R435
0

R436
0

COMP_L_IN

COMP_R_IN

26~52"

JK405

1234

USB DOWN STREAM

5

KJA-UB-4-0004

JK404

19~22"

1234

USB DOWN STREAM

UB01123-4HHS-4F

5

19-22"

EXT_SPK_CONTROL/DEBUG

+5V_ST

C404

3

E_SPRING

4 R_SPRING

5 T_SPRING

8 SHIELD_PLATE

R420

10K

R403
47

SIDE_USB_DM

SIDE_USB_DP

GND

IN_1

IN_2

R466

EN

10K

19-22"

19-22"

0.1uF

+5V_USB

+5V_GENERAL

19-22"

R468
47

C405

0.1uF

D425

CDS3C05HDMI1

5.6V
26~52"

C432

0.1uF

D401

CDS3C05HDMI1

5.6V
19~22"

OUT_3

OUT_2

C407
10uF

OUT_1

OPT

FLAG

C434
10uF
OPT

REAR_USB_DM

D402

CDS3C05HDMI1

5.6V
19~22"

JK407

PEJ024-01

IC402

MP6211DH

8

7

6

5

D426

CDS3C05HDMI1

5.6V

26~52"

IC414

MP6211DH

OUT_3

8

19-22"

OUT_2

7

OUT_1

6

FLAG

5

REAR_USB_DP

6A T_TERMINAL1

7A B_TERMINAL1

7B B_TERMINAL2

6B T_TERMINAL2

GND

1

IN_1

2

IN_2

3

EN

4

1

2

3

4

C403

0.1uF

USB_CTL
USB_OCD

USB_CTL
USB_OCD

C423

0.1uF

SELECT

VCC

SELECT

VCC

R400
100

NLASB3157DFT2G

6

ON SEMICONDUCTOR

ANALOG SWITCH

5

A

4

EAN38256201

NLASB3157DFT2G

6

ON SEMICONDUCTOR

ANALOG SWITCH

5

A

4

EAN38256201

IC408

B1

1

GND

2

B0

3

IC409

B1

1

GND

2

B0

3

PC - RGB

DSUB_VSYNC
DSUB_HSYNC

DSUB_B

DSUB_G

DSUB_R

DBG_SW

R408
0

R417
0

+5V_ST

+5V_ST

R441
75
1%

R442
75
1%

R443
75
1%

R414

6.8K

R413

3.6K

R421

3.6K

R422

6.8K

EXT_VOL-

0R437

0R440

C418

OPT

C419

OPT

C420

OPT

EXT_VOL+

+5V_ST

C433

0.1uF

CAT24C02WI-GT3

A0

1

A1

2

A2

3

VSS

4

D413

30V

D415
ADUC30S03010L_AMODIODE

30V

D416
ADUC30S03010L_AMODIODE

30V

D417
ADUC30S03010L_AMODIODE

30V

R467
100

SELECT

VCC

SELECT

VCC

A

C400

VCC

8

WP

7

SCL

6

SDA

5

ADMC5M03200L_AMODIODE

D414
30V

0.1uF

16V

IC400

ADUC30S03010L_AMODIODE

UART_DBG_SW

IC405

NLASB3157DFT2G

6

ON SEMICONDUCTOR

ANALOG SWITCH

5

A

4

EAN38256201

IC404

NLASB3157DFT2G

6

ON SEMICONDUCTOR

ANALOG SWITCH

5

4

EAN38256201

ENKMC2838-T112

R404

4.7K

C401

18pF

50V

D418

5.6V
OPT

D400

C

R406

4.7K

C402
18pF
50V

RED

RED_GND

GND_2

11

6

1

SPG07150941-1

GREEN_GND

7

1

2

3

DDC_DATA

1

2

3

A1

A2

R444
22

GREEN

BLUE_GND

12

2

P400

+5V_ST

R438

4.7K

B1

GND

B0

B1

GND

B0

+5V_ST

R412
10K

R416

100

R445

22

D419

ADMC5M03200L_AMODIODE

5.6V
OPT

R446
0

OPT

BLUE

GND_1

DDC_GND

H_SYNC

NC

V_SYNC

SYNC_GND

DDC_CLOCK

13

14

15

SHILED

8

3

16

9

10

4

5

+3.3V

G

Q402
BSS83

SBD

R469
0

MST_DBG_TX

OPT

NEC_DBG_TX

MST_DBG_RX

NEC_DBG_RX

EDID_WP
ISP_RXD
ISP_TXD

+3.3V

R447

4.7K
R448
1K

D420

ADMC5M03200L_AMODIODE

5.6V

OPT

R463

4.7K

DSUB_DET

UART SWITCH

SELECT

CONNECTION

L

B0 - A

H

B1 - A

UART_RX

UART_TX

C416

C498

0.1uF

+5V_ST

0.1uF

+5V_ST

R491
100

R495
100

SELECT

SELECT

SELECT

VCC

SELECT

VCC

NLASB3157DFT2G

6

ON SEMICONDUCTOR

ANALOG SWITCH

VCC

5

A

4

NLASB3157DFT2G

6

ON SEMICONDUCTOR

ANALOG SWITCH

VCC

5

A

4

NLASB3157DFT2G

6

ON SEMICONDUCTOR

ANALOG SWITCH

5

A

4

NLASB3157DFT2G

6

ON SEMICONDUCTOR

ANALOG SWITCH

5

A

4

R464
100

IC410

EAN38256201

IC411

EAN38256201

R497
100

IC412

EAN38256201

IC413

EAN38256201

B1

1

GND

2

B0

3

B1

1

GND

2

B0

3

B1

1

GND

2

B0

3

B1

1

GND

2

B0

3

UART_SW1

NEC_TX

RS232_MST_TX

NEC_RX

RS232_MST_RX

UART_SW2

RS232_MST_TX

NEC_RX

RS232_MST_RX

NEC_TX

RJP

JK409

MJ-657PT-8-SD

9

+12V_RJP

1

2

3

4

5

6

7

8

+5V_GENERAL

10K

R411

10K

R410

R401

10K

R409

10K

RJP_CTRL_0

RJP_CTRL_1

RJP_CTRL_2

RJP_CTRL_3

RJP_DET

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.

SPDIF OPTIC JACK

R402

4.7K

NL17SZ00DFT2G

SPDIF_OUT

GND

R492

0

OPT
C409
1uF
10V

R499

10K

+5V_GENERAL

OPT

R493
10K

B

OPT

OPT

OPT
C410
1uF
10V

R498

OPT

10K

C

E

Q403
2SC3052

SUBAMP_SD

EXT_OUT_R

EXT_OUT_L

PC AUDIO

JK401

+5V_GENERAL

IC401

A

1

B

2

3

R405

VCC

5

C408

0.1uF
16V

Y

4

0

OPT

+5V_GENERAL

R407
22

1/10W
1%

+5V_GENERAL

R462

1K
OPT

OPT

ZD403

AMOTECH

C406

0.1uF
16V

JK403

JST1223-001

GND

VCC

VINPUT

1

2

3

Fiber Optic

4

FIX_POLE

PEJ024-01

3

6A

7A

4

5

7B

6B

8

E_SPRING

T_TERMINAL1

B_TERMINAL1

R_SPRING

T_SPRING

B_TERMINAL2

T_TERMINAL2

SHIELD_PLATE

D421

5.6V

OPT

AMOTECH

D422

5.6V

OPT

AMOTECH

C422
100pF
50V

C424
100pF
50V

R449
470K

R450
470K

R452
15K

R451
15K

R455
0

R456
0

PC_R_IN

PC_L_IN

R453

10K

R454

10K

EXT_SPEAKER

JK406

PEJ024-01

3

6A

7A

4

5

7B

6B

8

E_SPRING

T_TERMINAL1

B_TERMINAL1

R_SPRING

T_SPRING

B_TERMINAL2

T_TERMINAL2

SHIELD_PLATE

LP91Y xxLH200H-ZA

EAX61527901 2009.10.08
INTERFACE

4 12

DVB-CI SLOT

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

CI_TS_DATA[4]
CI_TS_DATA[5]
CI_TS_DATA[6]
CI_TS_DATA[7]

CI_MDI[0]
CI_MDI[1]
CI_MDI[2]
CI_MDI[3]

CI_MDI[4]
CI_MDI[5]
CI_MDI[6]
CI_MDI[7]

/PCM_WAIT

CI_TS_CLK

CI_TS_VAL

CI_TS_SYN

CI_TS_DATA[0]
CI_TS_DATA[1]
CI_TS_DATA[2]
CI_TS_DATA[3]

CI_MISTRT

CI_MIVAL_ERR

CI_MCLKI

/CI_CD1

CI_IORD
CI_IOWR

PCM_RST

+5V_CI_ON

+5V_GENERAL

10K

R505

C501

0.1uF
16V

AR500

33

R508

10K

0.1uF

C503

GND

R509

R503

47

AR503

AR504

47

33

33

+5V_GENERAL

R506

R500

REG

/CI_CD2

10K

R510

100

10K

R507

C502

10K

0.1uF
16V

C505
10uF
10V

100R511

0

R513

OPT

0

OPT

R512

GND

EAG41860101

10067972-050LF

35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59

65
66
67
68

2

P500

CI_DATA[3]

R516

C508

0.1uF

CI_DATA[4]
CI_DATA[5]
CI_DATA[6]
CI_DATA[7]

47

100

GND

CI_DATA[0]
CI_DATA[1]
CI_DATA[2]

3
4
5
6
7
8

9
10
11
12
13
14
15
16
17

R514

18
19
20
21
22
23
24
25
2660
2761
2862
2963
3064
31
32
33
34

G1G2

1

GND

R515

0

OPT

GND

CI_DATA[0-7]

10K

R517

CI_ADDR[10]

CI_ADDR[11]

CI_ADDR[9]

CI_ADDR[8]
CI_ADDR[13]
CI_ADDR[14]

CI_ADDR[12]

CI_ADDR[7]

CI_ADDR[6]

CI_ADDR[5]

CI_ADDR[4]

CI_ADDR[3]

CI_ADDR[2]

CI_ADDR[1]

CI_ADDR[0]

CI_DATA[0-7]

/PCM_CE

CI_OE

+5V_GENERAL

CI_WE

CI_ADDR[0-14]

10K

R518

/PCM_IRQA

C509

0.1uF
16V

GND

DVB-CI TS INPUT

DVB-CI HOST I/F

CI_MDI[7]
CI_MDI[6]
CI_MDI[5]

CI_MDI[4]

CI_MDI[3]
CI_MDI[2]
CI_MDI[1]
CI_MDI[0]

CI_MISTRT

CI_MIVAL_ERR

CI_MCLKI

CI_DET

PCM_A[0]

CI_ADDR[7]

PCM_A[1]

CI_ADDR[6]

PCM_A[2]

CI_ADDR[5]

PCM_A[3]

CI_ADDR[4]

AR506

33

AR507

33

AR513

33

IC501

1OE

1

2

3

4

5

6

7

8

9

10

TOSHIBA

0ITO742440D

1A1

2Y4

1A2

2Y3

1A3

2Y2

1A4

2Y1

GND

TC74LCX244FT

FE_TS_DATA[7]
FE_TS_DATA[6]
FE_TS_DATA[5]
FE_TS_DATA[4]

FE_TS_DATA[3]
FE_TS_DATA[2]
FE_TS_DATA[1]
FE_TS_DATA[0]

FE_TS_SYN

FE_TS_VAL_ERR

FE_TS_CLK

VCC

20

2OE

19

1Y1

18

2A4

17

1Y2

16

2A3

15

1Y3

14

2A2

13

1Y4

12

2A1

11

+3.3V_CI

FE_TS_DATA[0-7]

FE_TS_DATA[0-7]

C511

0.1uF
16V

CI_ADDR[0]

PCM_A[7]

CI_ADDR[1]

PCM_A[6]

CI_ADDR[2]

PCM_A[5]

CI_ADDR[3]

PCM_A[4]

DVB-CI DETECT

/CI_CD2

/CI_CD1

CI POWER ENABLE CONTROL

PCM_5V_CTL

+5V_ST

IC500

74LVC1G32GW

1B 5 VCC

2A

3GND

C500

0.1uF
16V

DVB-CI SERIAL BUFFER TS

AR508

33

AR509

33

AR510

33

AR511

33

AR512

33

PCM_D[0]
PCM_D[1]
PCM_D[2]
PCM_D[3]

PCM_D[4]
PCM_D[5]
PCM_D[6]
PCM_D[7]

PCM_A[8]
PCM_A[9]

/PCM_WE
/PCM_IORD

/PCM_IOWR

PCM_A[10]
PCM_A[11]

PCM_A[12]
PCM_A[13]
PCM_A[14]
/PCM_REG

/PCM_OE

PCM_D[0-7]

PCM_D[0-7]

R525
47

R526
47

R527
47

R528
47

+3.3V_CI

C512

0.1uF

BUF_TS_CLK

BUF_TS_VAL_ERR

BUF_TS_SYN

BUF_TS_DATA[0]

CI_DATA[0-7]

+3.3V_CI

C510

4Y

R502
10K

R501
33K

0.1uF

16V

R504

22K

R529

2.2K
C

Q500

B

2SC3052

E

R519
47

Q501

RSR025P03

S

+3.3V_CI

R520

10K

R524

CI_DET

/PCM_CD

FE_TS_CLK

FE_TS_VAL_ERR

FE_TS_SYN

FE_TS_DATA[0]

33K

R522
10K

R523
10K

OE1

A0

A1

A2

A3

A4

A5

A6

A7

GND

R521
47

+5V_CI_ON

D

G

C504
10uF
10V

C507

0.1uF
16V

IC502

74LVC541A(PW)

1

2

3

4

5

6

7

8

9

10

BUFFER

VCC

20

OE2

19

Y0

18

Y1

17

Y2

16

Y3

15

Y4

14

Y5

13

Y6

12

Y7

11

CI_DATA[0-7]

CI_ADDR[8]

CI_ADDR[9]
CI_ADDR[10]
CI_ADDR[11]

CI_ADDR[12]
CI_ADDR[13]
CI_ADDR[14]

CI_OE

CI_WE

CI_IORD

CI_IOWR

CI_DATA[0]
CI_DATA[1]
CI_DATA[2]
CI_DATA[3]

CI_DATA[4]
CI_DATA[5]
CI_DATA[6]
CI_DATA[7]

REG

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.

EAX61527901

PCMCIA

LP91Y xxLH200H-ZA

2009.06.09

5 12

UI_HW_PORT1

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

UI_HW_PORT2

(Option for 26~52")

EAG39789402

JK600

A0

A1

A2

VSS

22

19

18

17

16

15

14

13

12

11
10

20

21

IC600

CAT24C02WI-GT3

1

2

3

4

SOURCE1

GATE1

DRAIN2

+5V_ST

SSM6N15FU

1

2

3

Q600

+3.3V

R606

R608

4.7K

4.7K
D

B
S

G
Q603

BSS83

+5V_ST

R602
0

R627

68K

MMBD301LT1G

D603

30V

DRAIN1

6

GATE2

5

SOURCE2

4

0R625

OPT

R631

9.1K

C605

0.1uF
16V

CEC_REMOTE

5V_HDMI_1

C

R615
10K

DDC_SDA_1
DDC_SCL_1
IR_OUT_HDMI1
CEC_REMOTE

HPD1

22

R600
2K

R612
1K

Q601EB

2SC3052

C600

0.1uF
16V

22R610

22R611

0R624

0R607

CK-_HDMI1

CK+

D0-

9

D0_GND

8

D0+

7

D1-

6

D1_GND

5

D1+

4

D2-

3

D2_GND

2

D2+

1

GND

5V_HDMI_1

VCC

8

WP

7

SCL

6

SDA

5

R618
0

0.1uF

0R623

0R621

C603

R626

4.7K

A2

+5V_ST

C

R629

4.7K

CK+_HDMI1
D0-_HDMI1

D0+_HDMI1
D1-_HDMI1

D1+_HDMI1
D2-_HDMI1

D2+_HDMI1

A1
ENKMC2838-T112
D600

DDC_SDA_1

EDID_WP

DDC_SCL_1

EAG39789402

JK601

IC602

CAT24C02WI-GT3

A0

1

A1

2

A2

3

VSS

4

GND

5V_HDMI_2

C

R616

A2

+5V_ST

C

R649

4.7K

10K

DDC_SDA_2
DDC_SCL_2
IR_OUT_HDMI2
CEC_REMOTE
CK-_HDMI2

CK+_HDMI2
D0-_HDMI2

D0+_HDMI2
D1-_HDMI2

D1+_HDMI2
D2-_HDMI2

D2+_HDMI2

A1
ENKMC2838-T112
D602

EDID_WP

DDC_SDA_2

HPD2

HDMI_CEC

MST_HDMI_CEC

HDMI_CEC

HDMI_CEC

DDC_SCL_2

Q602EB

2SC3052

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

R601
2K

GND

R613
1K

C601

0.1uF
16V

22R603

22R604

0R632

0R605

5V_HDMI_2

VCC

8

R640

WP

0

7

SCL

6

SDA

5

R646

C607

4.7K

0.1uF

0R645

0R642

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.

EAX61527901

HDMI

LP91Y xxLH200H-ZA

2009.10.08
6 12

AMP_RST

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

AUDIO_MASTER_CLK

+1.8V_AMP

+1.8V_AMP

L701

L700

BLM18PG121SN1D

BLM18PG121SN1D

C700
1uF
10V

C702

0.1uF
16V

MCLK SDATA WCK BCK TP is necessory

MS_LRCH
MS_LRCK

MS_SCK

SDA_SUB/AMP

SCL_SUB/AMP

R703
0

C704
1uF
10V

C705
100pF
50V

R704
100

R740
0

C706

0.1uF
16V

C708
1000pF
50V

R708

3.3K

C709

0.1uF

+3.3V

C707
1000pF
50V

R725

D704

1N4148W

AMP_VCC

C729

C733

0.1uF
50V

C716
22000pF
50V

PGND1B_2

OUT1B_1

OUT1B_2

PVDD1B_1

PVDD1B_2

PVDD1A_1

PVDD1A_2

OUT1A_1

OUT1A_2

PGND1A_1

PGND1A_2

51

52

53

54

55

CLK_I

TEST0

56

1
2
3

AD

4
5
6

IC701

7
8

EAN60664001

9
10

LFM

11

NTP-3100L

12
13
14

15

16

17

18

19

BCK

WCK

DVDD

SDATA

DVSS_2

C715

0.1uF
16V

C713

0.1uF

BST1A

16V

VDR1A

RESET

DVSS_1

VSS_IO

VDD_IO
DGND_PLL
AGND_PLL

AVDD_PLL
DVDD_PLL

+1.8V_AMP

C760

1uF

10V

100R722
100R720
100R721
100R709
100R710

C712

C714

33pF

33pF

50V

50V

50

20

21

SCL

SDA

46

47

48

49

22

FAULT

MONITOR_023MONITOR_124MONITOR_2

C725

0.1uF

10uF

50V

35V

C726
22000pF

50V

C727

0.1uF

16V

VDR1B44BST1B45PGND1B_1

43

25

26

27

28

BST2B

VDR2B

PGND2B_1

C724

0.1uF
16V

C721

0.1uF
16V

C730

NC

42

0.1uF

C732

16V

VDR2A

41

BST2A

40

PGND2A_2

39

PGND2A_1

38

OUT2A_2

37

OUT2A_1

36

PVDD2A_2

35

PVDD2A_1

34

PVDD2B_2

33

PVDD2B_1

32

OUT2B_2

31

OUT2B_1

30

PGND2B_2

29

R718
100

R717
33K

OPT

C731
22000pF
50V

Q701

2SC3052

OPT

OPT

22000pF

50V

+5V_ST

C

E

C728

0.1uF
50V

R724

10K

R729

B

100V

OPT

D705

1N4148W

100V

OPT

D706

1N4148W

100V

OPT

D707

1N4148W

100V

OPT

C720

0.1uF
50V

AMP_VCC

C735

C734

0.1uF

0.1uF
50V

50V

10K

OPT

NTP_MUTE

12

C741
1000pF

50V

C742
1000pF

50V

R726
12

R727
12

C743
1000pF

50V

C744
1000pF

50V

R728
12

C736
10uF
35V

R705
12

R713
12

R716
12

R719
12

L704
DA-8580
EAP38319001

2S

1S 1F

L705
DA-8580
EAP38319001

2S

1S 1F

C749

2F

C745

0.47uF
50V

0.1uF
50V

C750

0.1uF
50V

4.7K

R731

4.7K

R734

3.3

R735

3.3

C756

0.01uF
50V

C755

0.01uF
50V

R730

SPK_L+

SPEAKER_L

SPK_L-

SPK_R+

C757

0.01uF

C751

R732

0.1uF

2F

C746

0.47uF
50V

50V

C752

0.1uF
50V

4.7K

R733

4.7K

SPK_L+

SPK_L-

SPK_R+

SPK_R-

50V

R736

3.3

R737

3.3

C758

0.01uF
50V

L706
120-ohm

L707
120-ohm

L709
120-ohm

L708
120-ohm

SPEAKER_R

SPK_R-

P700

WAFER-ANGLE

4

3

2

1

EARPHONE AMP

SIDE_HP_MUTE

HP_LOUT

HP_ROUT

+5V_EARPHONE

R741
10K

Monitor0_1_2 TP is necessory

STBY_MUTE_NTP

2A => 5A

EXT_SPEAKER_AMP

C766
1uF
16V

C767

0.1uF
50V

AMP_VCC

1uF

16V

C764

1uF

16V

C765

PVCCL_1

PVCCL_2

MUTE

LIN

RIN

BYPASS

AGND_1

AGND_2

PVCCR_1

VCLAMP

PVCCR_2

BLM18PG121SN1D

IC702

TPA3124D2PWPR

1

SD

2

3

4

5

6

7

8

9

10

11

12

L712

C768

0.1uF
50V

C771

C772

0.1uF

10uF

50V

50V

PGNDL_2

24

PGNDL_1

23

LOUT

22

BSL

21

AVCC_2

20

AVCC_1

19

GAIN0

18

GAIN1

17

BSR

16

ROUT

15

PGNDR_2

14

PGNDR_1

13

C769

0.22uF
50V

C770

0.22uF
50V

L713
DA-8580
EAP38319001

2S

1S 1F

R746
10K

R745
10K

C773

R749

2F

R747
10K

R748
10K

OPT

1uF

4.7K
50V

C774

R750

1uF

4.7K
50V

OPT

C775

0.47uF
50V

C776

0.47uF
50V

C777
100uF
25V

C778
100uF
25V

EXT_OUT_L

EXT_OUT_R

IC700

TPA6110A2DGNRG4

BYPASS

C701

1uF

6.3V

R702
20K

R701

C

2SC3052

E

SHUTDOWN

10K

Q700

C703

0.22uF
16V

+5V_EARPHONE

R742

10K

R700
10K

B

C

B

Q705

2SC3052

E

1

GND

2

3

IN2-

4

R706

27K

IN1-

8

VO1

7

VDD

6

VO2

5

0.1uF

C710

16V

R711
27K

C717

0.22uF

R712

16V

20K

C718
47uF 16V

C719
47uF 16V

+5V_EARPHONE

ENKMC2838-T112

C711
100uF
16V

R715

R714

HP_DET

C761

D710

C723

0.1uF

1K

C722

0.1uF

1K

D700

BLM18PG121SN1D

A1

C

A2

5.6V

AMOTECH

D711

5.6V

AMOTECH

L711

22uF
16V

C762
22uF
16V

+5V_ST

+3.3V

R707
10K

4

3

2

1
5

DJ-S3600LM

JK700

SUBAMP_MUTE

STBY_MUTE_TPA

SUBAMP_SD

R1658

R738
10K

R751

RR752

0

OPT

R739

4.7K

B

100

C

Q703
2SC3052

E

EXT_L_AMP

100

EXT_R_AMP

C763
1uF
16V

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

LP91Y xxLH200H-ZA

2009.06.09EAX61527901
7 12

PWM_DIM

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

ERROR_OUT

A_DIM_1

ERROR_OUT

20 PIN

21 PIN

22 PIN

24 PIN

LGD V3

20 INV_CTL

21 ADIM

22 ERROR

24 PDIM

19~22"

P801

WAFER-ANGLE

22 PDIM

R855
0

22 ERROR

R841
0

R813
0

OPT

21 ADIM

R851
0

21 ERROR

R845
0

LGD V4

20 INV_CTL

22 ERROR

10

11

21 ADIM

OPC

FROM LIPS & POWER B/D

C813

0.1uF

50V

+5V_GENERAL

C

E

C823
1uF

6.3V

OPT

R803

4.7K

RT1P141C-T112

Q801

3

R807

2

33K
OPT

C820

0.1uF
16V

P_24V/P_15V

R818

+5V_ST

3.3K

R821
10K

B

Q802

2SC3052

+5V_ST

1

R805

4.7K
C

Q800EB

2SC3052

L807

CB3216UA121

R870

R859

R860

OPC

NOT_OPC

35V

PWM_DIM

A_DIM

A_DIM_1

+5V_ST

R804

10K

OPT

OPT

24 PDIM

OPC

R859

C832
68uF

R822

10K

X

O

R823
10K
OPT

C865

0.1uF

16V

0

22

22

+1.8V_DDR

R802

10K

P_12V

R860

O

X

C826
100uF
16V

OPT
R806
0

R810
0

INV_CTL

PWM_DIM

PWM_DIM

OPC_OUT

POWER_ON/OFF1

D800

EXT5V_CTRL

D801

A1CA2

EXT12V_CTRL

A1CA2

L804

C818

16V

0.1uF

OPT

CB3216UA121

Sharp PSU

20 INV_CTL

21 ERROR

22 GND

24 PDIM

L806

CB3216UA121

C802

0.1uF

16V

R814

100

19~22"

L824

BLM18PG121SN1D

19~22"

L800

BLM18PG121SN1D

R858
0

20 INV_CTL

FW20020-24S

NC

1

GND

3

GND

5

5.2V

7

5.2V

9

GND

11

12V

13

GND

15

24V

17

NC

19

A_DIM

21
23NC24

26~52"

P800

+5V_ST

C885

C824

0.1uF

220uF

16V

16V

R815

6.8K

OPT

+5V_ST

R864
10K
OPT

C804
1uF

6.3V

P_ON

2

GND

4

GND

6

5.2V

8

5.2V

10

GND

12

12V

14

GND

16

24V

18

INV_ON

20

ERROR

22

P_DIM

1

2

3

4

5

6

7

8

9

R808
0

OPT

C807

R812

0.1uF
0

16V

22 GND

OPT

R875
0

21 GND

AUO PSU

20 INV_CTL

21 ERROR

22 PDIM

NC

+12V

PANEL_CTL

+5V

Vout=0.8*(1+R1/R2)

+5V_ST

POWER_ON/OFF1

L810

BLM18PG121SN1D

12V_PANEL

R1

R2

BLM18PG121SN1D

L817

R809

10.5K
1%

R871

8.2K

+5V_ST

L801

BLM18PG121SN1D

5V_PANEL

OPT
R832
10K

R833
10K

C842

C841

0.01uF

0.1uF

25V

16V

5V_PANEL_OPT

R842-*1
R837
22K

R843-*1

C

Q804

B

2SC3052

E

R842

10K

22K

2.7K
B

R839

22K

R843

1.8K

C

E

Q805
2SC3052

C845

10uF
16V
OPT

C847

4.7uF

RSR025P03

S

16V

+1.8V_DDR

L826

2.2uH

C876
22uF

+5V_ST

R856

4.7K

C878
10uF

C879
10uF

10V

PGND2_1

10V

10V

PGND1_1

C880
22uF

10V

R800
10K

1%

PVCC_1

PVCC_2

PVCC_3

L827

2.2uH

PGND2_2

20

1

2

3

BD9150MUV

4

5

6

PGND1_2

IC806

7

SW1_1

10uF
C866

10V

8

SW1_2

FB217EN218SW2_119SW2_2

16

ITH2

15

AVCC

14

NC

13

AGND

12

ITH1

11

9

10

FB1

EN1

+3.3V

C825

0.1uF
16V

Q806

G

C829

C877

0.1uF
16V

1uF

10V

R874
75K

R873
56000

D

BLM18PG121SN1D

OPT

BLM18PG121SN1D

BLM18PG121SN1D

PANEL_POWER

PANEL_POWER

C853

1uF

25V

L805

L814

+1.8V_AMP

50 mA

+3.3V_AVDD

C811

0.1uF
16V

C852

0.1uF
16V

L818

450 mA

C883
330pF

C882
330pF

C859

0.1uF
16V

+3.3V_CI

+12V

+12V/+15V

C835
22uF
25V

+12V RJP

C839

0.47uF
25V

C848

0.01uF
25V

BS

SW

GND

100KR848

IN

IC808

MP2305DS

1

$0.28

2

3

4

L819
22UH

+5V_GENERAL

8

7

6

5

+12V

SS

EN

COMP

FB

R1

C833

0.1uF
50V

C890

0.1uF
16V

C868

0.1uF

5600pF

R2
R847
56K
1%

Vout=0.923*(1+R1/R2)

C858
22uF
16V

R816
10K

50V

C860

50V

100uF
16V

C892

R853

12.4K

S

R852

9.1K

1%

Replaced Part

AP1117E33G-13

IN

3

OUT

Q812

RSR025P03

G

IC809

$0.048

2

D

+5V_GENERAL

BLM18PG121SN1D

L821

C828

0.1uF
16V

OPT

R801
1

C850

R811

0.1uF

1

16V

+5V_USB

C812

0.1uF
16V

+3.3V_TUNER

ADJ/GND

1

C893
100uF
16V

C894

0.1uF
16V

+12V_RJP

L820

CB3216PA501E

R817
10K

C869

0.1uF
50V

C870

0.1uF
50V

RJP_DET

+3.3V

C801
100uF
16V

C805

0.1uF
16V

IC804

AZ1117H-1.2TRE1

IN

3

$0.05

1

ADJ/GND

OUT

2

16V

C810
100uF

+1.2V_TUNER

C884

0.1uF
16V

180 mA

DC DC CONVERTER +12V

(Option for 19~22")

Main Power on/off

P_12V

C861

2.2uF
50V

C862

2.2uF
50V

POWER_ON/OFF1

22" OPT

R865-*1
3K

19~22"

P_24V/P_15V

R863
10K

B

R865

5.6K

26~52"

R564
2K

C

E

Q807
2SC3052

AMP_VCC

L803

BLM18PG121SN1D

L811

BLM18PG121SN1D

19~22"

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.

1S1

2G1

3S2

4G2

Q803

SI4925BDY

+12V/+15V+24V/+15V

8 D1_2

7 D1_1

6 D2_2

5 D2_1

BLM18PG121SN1D

L809

BLM18PG121SN1D

26~52"

+12V

L823

L808

BLM18PG121SN1D

C864

0.1uF
50V

+24V/+15V

+12V

C854

0.1uF
50V

S6 core 1.26 volt

+5V_ST

465 mA @85% efficiency

BLM18PG121SN1D

L812

Vout=0.8*(1+R1/R2)

Close to IC

OPT

R824

C844

22K

Placed on SMD-TOP

C IN

C838
22uF
10V

C837
22uF

0.1uF
50V

OPT

10V

1/8W

1%

R827
75K

1%

R1

R2

GND

FB

IN

BS

R826

Replaced Part

OPT

R830

10K

1/16W

IC805

MP2212DN

1

2

DEVELOPE

3

4

1%

$0.24

10

Close to IC

R825
22K

1%

8

7

6

5

EN/SYNC

SW_2

SW_1

VCC

0R862

6.3V

C840
1uF

+3.3V

R831

1/16W

10K

4.9A 0.0150OHM 34MHZ

C836

0.1uF
50V

MAX 3A

C891

0.47uF

25V

$0.07

L813

3.6uH

NR8040T3R6N

+1.26V_VDDC

1600 mA

C843

C849
22uF

22uF

10V

OPT

Placed on SMD-TOP

C856

0.1uF

P_24V/P_15V

C816

C817

0.47uF

22uF
25V

25V

C830

0.01uF
25V

100KR819

IC802

MP2305DS

BS

1

$0.28

IN

2

SW

3

GND

4

L802
22UH

SS

8

EN

7

COMP

6

FB

5

R1

R828
59K

C834
22uF
16V

C819

0.1uF
50V

C831

5600pF

50V

R2

R820

9.1K

R836

6.8K

Vout=0.923*(1+R1/R2)

P_12V

LP91Y xxLH200H-ZA

EAX61527901

POWER

2009.10.08
8 12

SCART

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

23

23

22

21

20

19

18

17

16

15

14

13

12

11

.

10

.

9

8

SC_ID

B

7

6

LIN

5

GND

4

GND

3

L_OUT

2

R_IN

1

R_OUT

JK1100

5V/12V EXT PowerOut

C444

0.47uF

P_12V

R478
100K

OPT

IC406

MP2305DS

BS

C439

0.01uF
50V

25V

1

IN

2

SW

3

GND

4

L402
22UH

8

7

6

5

SS

EN

COMP

FB

C437
2700pF

50V

C441

0.1uF
50V

R473

12.4K

R475
56K

R480
10K

R477
1K

C440
22uF
16V

EXT5V_CTRL

L400

CB3216PA501E

EXT12V_CTRL

EXT_PWR_DET

EXT_5V

R474
1K

C443
470pF
50V

ENABLE/FAULT

DV/DT

I-LIMIT

2SC3875S(ALY)

+3.3V

R1124

4.7K
R1126
1K

D1110

5.6V

22

21

20

19

18

17

16

15

14

13

12

11

30V

30V

OPT

30V

30V

D1101

OPT

D1102

D1103

OPT

D1104

OPT

C1113

0.1uF
16V

OPT

R1109
75

D1106
30V
OPT

R1104
75

D1108

5.6V
OPT

D1107

5.6V
OPT

R1101
75

D1109

30V

OPT

R1107
75

C1106
47pF
50V

R1106
75

R1103
470K

R1100
470K

R1117
0

R1114
22

R1105
0

R1102

75

C1101
OPT

C1100
OPT

L1101

120-ohm

L1100

120-ohm

OPT

C1108
220pF
50V

C1107

100uF

16V

C1103
330pF
50V

C1102
330pF
50V

SCART1_DET

SC1_CVBS_IN

SC1_FB
SC1_R

SC1_G

SC1_B

R1110
10K

R1108
10K

R1112
12K

R1111
12K

SC1_L_IN

SC1_R_IN

D1111

30V

OPT

R1118
62K

E

C

ISA1530AC1

Q1119

B

Q1120

2SC3052

R1113

390

R1123
11K

C1143

R1140

470

C

E

R1138
120

10uF

35V

R1174
47K

B

R1175
15K

SC1_ID

BLM18PG121SN1D

C1142

47uF

16V

C1144

50V

0.1uF

L1104

R1182
0

+12V/+15V

C1145

0.1uF
50V

TV/DTV_VOUT

GND

NC

+5V_ST

1

2

3

4

5

R479

4.7K

R472
43

IC407

MP5000DQ

11

VCC

C438
1uF
16V

C

Q400EB

SOURCE_5

10

SOURCE_4

9

SOURCE_3

8

+5V_ST

R476

4.7K

2SC3875S(ALY)

C436
22uF
16V

Q401

B

C

7

6

SOURCE_2

SOURCE_1

P_12V

C442
22uF
16V

R470
1K

L401

CB3216PA501E

C435

0.1uF
50V

A1CA2
D429

R471
10K

E

EXT_12V

Audio Out Amp

TV/DTV_L_OUT

+12V/+15V

TV/DTV_R_OUT

D1100

5.6V
OPT

C1126

0.1uF
50V

BLM18PG121SN1D

D1105

5.6V
OPT

L1103

BLM18PG121SN1D

SCART1_Lout

L1102

C1133

10uF

16V

SCART1_Rout

C1134

10uF

16V

R1191

2.2K

R1190

2.2K

C1110
1000pF
50V

C1111
1000pF
50V

OPT

R1193
470K

R1192
470K

OPT

R1135
0

R1160
0

R1145
33K

R1143

5.6K

R1144

5.6K

R1146
33K

C1127
33pF

LM324D

1

1

2

2

3

3

4

4

5

5

6

6

7

7

TV/DTV_L_OUT

TV/DTV_R_OUT

IC1103

Scart Audio Mute

14

14

13

13

12

12

11

11

10

10

9

9

8

8

TV/DTV_L_OUT

TV/DTV_R_OUT

Q1127

2SC3052

Q1126

2SC3052

R1151
2K

R1149
2K

Q1130

RT1P141C-T112

3

2

1

C1131

0.1uF

+3.3V

R1120

10K

SCART1_MUTE

REAL TIME CLOCK

C903
2pF
50V

C904
2pF
50V

12

BA900

BATTERY

X900

32.768KHz

EAW39040101

R909
1K

XI

XO

VBAT

VSS

VCC

IRQ/FT/OUT/SQW

SCL

SDA

R917
22

R918
22

+5V_ST

R919

4.7K

C905

0.1uF
16V

CLOCK_SCL

CLOCK_SDA

RTC_INT

IC903

M41T81

1

2

3

4

8

7

6

5

C1116
4700pF

C1115

4700pF

R1147
10K

R1148
10K

33pFC1128

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.

EAX61527901

SCART

LP91Y xxLH200H-ZA

2009.10.0

8

9 12

TU1200

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

TDFW-G235D

ANT[5V]

1

BB[CTR]

2

GND_1

3

+B[5V]

4

NC_1

5

RF_AGC

6

TP[VT]

7

NC_2

8

GND_2

9

SDA_T

10

SCL_T

Tuner PLL : 0xC2

Analog Tuner : 0x86

Digital Tuner : 0x1E

11

AIF_1

12

NC_3

13

GND

14

VIDEO

15

NC_4

16

TUNER

DVB-T : 1.8V(INTEL demod)

DVB-T/C : 1.2V(MICRONAS demod)

SIF

17

SDA

18

SCL

19

RST

20

3.3V

21

1.2V

22

ERR

23

MCL

24

D7

25

D6

26

D5

27

D4

28

D3

29

D2

30

D1

31

D0

32

VAL

33

SYNC

34

35

SHIELD

C1214

0.1uF
16V

0.1uF

16V

C1200

100pF 50V

C1215

0.1uF
16V

C1216

+5V_GENERAL

L1204
MLB-201209-0120P-N2

R1229
10

Q1202
ISA1530AC1

E

+5V_GENERAL

L1201

MLB-201209-0120P-N2

C1208

C1207
100pF
50V

C1205
47pF
50V

OPT

C1206
47pF
50V

OPT

0R1205

R1221
33

R1222

C1218

C1217
47pF
50V

33

47pF
50V

47R1210

47R1211

47R1212

47R1213

47R1214

47R1215

47R1216

47R1217

47R1218

47R1219

47R1220

FE_TS_CLK

FE_TS_DATA[7]

FE_TS_DATA[6]

FE_TS_DATA[5]

FE_TS_DATA[4]

FE_TS_DATA[3]

FE_TS_DATA[2]

FE_TS_DATA[1]

FE_TS_DATA[0]

FE_TS_VAL

FE_TS_SYN

0.1uF
16V
OPT

0R1223

C1209
68uF
10V

47R1207

FE_TUNER_SDA

47R1208

FE_TUNER_SCL

FE_DEMOD_SDA

+3.3V_TUNER

R1225
100K

R1224
100

C1219

0.1uF

16V

FE_TS_VAL

FE_TS_DATA[0-7],FE_TS_CLK,FE_TS_VAL,FE_TS_SYN

FE_TS_ERR

/FE_RESET

C1221

0.1uF
16V

C1220

0.1uF
16V

C1210

0.1uF
16V

R1226

4.7K

L1202

MLB-201209-0120P-N2

+5V_TUNERFE_DEMOD_SCL

R1227

470

E

B

C

+3.3V_TUNER

+1.2V_TUNER

Q1200EB

2SC3052

ISA1530AC1

Q1201

C1212
47uF
16V

C

R1228
82

DVB-CI DETECT

R1209
10K

FE_TS_VAL
FE_TS_ERR

OPTION : RF AGC

FE_AGC_SPEED_CTL

FE_SIF

IC1201

NL17SZ08DFT2G

15

324

R1238

R1239

OPT

C1222

0.01uF
25V

0

1K

+3.3V_TUNER

C

R1240
200

B

C1227

0.1uF
16V

GND

B

+5V_GENERAL

+5V_TUNER

L1203

R1241

MLB-201209-0120P-N2

200

E

Q1205

C

R1245

47

R1230

2.2K

ISA1530AC1

C

Q1203EB

2SC3052

C1223

0.1uF
16V

FE_TS_VAL_ERR

R1231
10K

R1232
10K

FE_BOOSTER_CTL

FE_VMAIN

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.

UNER

EAX61527901

TUNER

LP91Y xxLH200H-ZA

2009.06.09

10 12

FHD

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

52

TF05-51S

P1301

Module

51

50

49

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

R1612

11

0

10

R1613
0

9

8

7

6

5

4

3

2

1

MEMC_SDA

MEMC_SCL

MEMC_RESET

LVB_0M

LVB_0P

LVB_1M

LVB_1P
LVB_2M

LVB_2P

LVB_CKM

LVB_CKP

LVB_3M

LVB_3P

LVB_4M

LVB_4P

LVA_0M

LVA_0P

LVA_1M

LVA_1P

LVA_2M

LVA_2P

LVA_CKM

LVA_CKP

LVA_3M

LVA_3P

LVA_4M

LVA_4P

LVDS_SEL_PULLUP

OPC_EABLE

OPC_EN

+3.3V

R1370

3.3K

OPT

R1371

0

BIT_SEL_GND(8bit)

LVDS_SEL_GND

External VBR

PWM_DIM
OPC_OUT

OPC_OUTPUT

+3.3V

10BIT

8BIT

BIT_SEL

+3.3V

R1372

OPC

R1373

R1378

3.3K

R1379
0

510

0

OPT

V4 OPTION

R1365

R1370

X
X

HD O
FHD

R1367
22

OPT

22R1366

22

LVB_CKP

R1371

X
0

R1378

X
X

LVDS_SEL

LVB_3P

LVB_3M

LVB_CKM

LVB_2P

LVB_2M

LVB_1P

LVB_1M

LVB_0P

LVB_0M

R1379

O

LVDS_HD_26~42"

P1302

FF10001-30

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

LVA_0M

LVA_0P

LVA_1M

LVA_1P

LVA_2M

LVA_2P

LVA_CKM

LVA_CKP

LVA_3M

LVA_3P

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

FF10001-30

LVDS_HD_19~22"

Small

P1300

31

R1315

CONTROL

IR & LED

+5V_ST

19~26"

P1303

IR_OUT

KEY1

KEY2

NEC_IR

R1300

R1318
100

R1317
100

22

Q1300

2SC3052

LED_B

LED_R

R1320

4.7K

+5V_ST

C

E

R1301
47K

R1319

19~26"

4.7K

L1304

BLM18PG121SN1D

L1302

BLM18PG121SN1D

19~26"

19~26"

L1301

BLM18PG121SN1D

L1303

BLM18PG121SN1D

32~52"

C1305

0.1uF

32~52"

+5V_ST

R1303
47K

R1302

10K

B

Q1301

2SC3052

BLM18PG121SN1D

BLM18PG121SN1D

C

E

L1305

L1306

R1304

100K

B

C1313

1000pF

50V

C1306

0.1uF
16V

32~52"

C1307

0.1uF

1000pF

32~52"

+5V_ST

C1312
50V

C1308

0.1uF
16V

19~26"

32~52"

ZD1304

AMOTECH

BLM18PG121SN1D

R1305
100

AMOTECH

5.6V

ZD1306

5.6V

L1307

C1309

100pF

ZD1301

5.6V
19~26"
AMOTECH

ZD1300

5.6V

19~26"

AMOTECH

ZD1302

5.6V

AMOTECH

C1314

0.1uF
16V

ZD1303

5.6V

AMOTECH

50V

ZD1305

5.6V

AMOTECH

C1315
1000pF
50V

KEY1

KEY2

GND

12507WR-03L

1

2

3

4

KEY1

KEY2

GND

5V_ST

GND

IR

LED_B

LED_R

P1305

12507WS-08L

1

2

3

4

5

6

7

8

9

.

Zener Diode is

close to wafer

PANEL_POWER

L1300

BLM18PG121SN1D

C1300

R1313

R1314

OPT

OPT

R1312

OPT

OPT

C1301

1000pF

0.1uF
16V

50V

IR_OUT_CTRL

+5V_ST

IR_OUT

R1308

R1142

4.7K

R1130

0

C1137

0.1uF

22

Q1101

RSR025P03

D

G

IR_OUT_RS232C

MST_IR

R1132

R1131

10K

R1133

10K

IR_OUT_HDMI1 IR_OUT

IR_OUT_HDMI2

10K

IC1100

C

Q1121

B

2SC3052

E

74AC08SJ

A0

1

B0

2

O0

3

A1

4

B1

5

O1

6

GND

7

VCC

14

A2

13

B2

12

O2

11

A3

10

B3

9

O3

8

+5V_ST

S

Q1100EB

2SC3052

R1307

C

10K

OPT

R1306

10K

A2

POWER_ON/OFF1

C

A1

IR_OUT_EN

D1113

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.

EAX61527901

MODULE&CTL

LP91Y xxLH200H-ZA

2009.10.08

11 12

Contents of LCD TV Standard Repair Process

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

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

5

6No power 6

7

8 No audio/Normal video 8
9

10

11
12 E. Noise Circuit noise, mechanical noise 12

A. Video error

B. Power error

C. Audio error

D. Function error

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

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

Wrecked audio/discontinuation/noise 9
No response in remote controller, key error,

recording error, memory error
External device recognition error 11

5

7

10

13 F. Exterior error Exterior defect 13

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

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

Standard Repair Process

LCD TV

Error

symptom

A. Video error

No video/ Normal audio

Established

date

Revised date

2008. 3 .05

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 /12V 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

1/13

Replace Main Board

Replace T-con
Board or module
And Adjust VCOM

※Precaution

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

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

Replace Main Board

1

Re-enter White Balance value

LGE Internal Use Only

Standard Repair Process

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 .05

2/13

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

2

LGE Internal Use Only

Standard Repair Process

LCD TV

Check RF Signal level

Normal

Signal?

N

Check RF Cable

Connection

1. Reconnection

2. Install Booster

Normal

Picture?

Y

Close

Y

N

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?

Contact with signal distributor

or broadcaster (Cable or Air)

Y

N

Check

S/W Version

SVC

Bulletin?

Y

S/W Upgrade

Normal

Picture?

Y

Established

date

Revised date

2008. 3 .05

■ Menu→Setup →Booster

N

Booster menu
On→Off: Check
Off→On: Check

Tuner soldering

N

Normal

Picture?

N

Check

Replace

Main B/D

3/13

Y

Close

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

Close

3

LGE Internal Use Only

Standard Repair Process

LCD TV

Check color by input

-External Input

-COMPONENT

-RGB

-HDMI/DVI

Check Test pattern

Error

symptom

Color

error?

N

Check error
color input
mode

A. Video error

※ Check
and replace

Y

Link Cable
(LVDS) and
contact
condition

External Input/

Component

error

Color error

Color

error?

N

Check
external
device and
cable

Y

Replace Main B/D

Established

date

Revised date

External device

/Cable

normal

N

Color

error?

End

Y

2008. 3 .05

Y

N

Replace
T-Con
Board
And Adjust
VCOM

LGD Module

Replace Main B/D

4/13

Other Module

Replace module

Y

Color

error?

N

Only

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

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

LGE Internal Use Only

Standard Repair Process

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?

Request repair
for external
device

External device screen error-Color error

Check screen
condition by

Check S/W Version

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

Check

version

S/W Upgrade

Normal

screen?

End

N

Y

N

Y

input

-External Input

-Component

-RGB

-HDMI/DVI

N

Component

5

Check and

Y

replace Link
Cable

External

Input

error

error

RGB
error

HDMI/

DVI

Established

date

2008. 3 .05

Revised date

LGD Module Only

Replace T-Con Board
And Adjust VCOM

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.

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

LGE Internal Use Only

Standard Repair Process

LCD TV

Check
Power LED

. Stand-By: Red
. Operating: Green

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 .05

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

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

N

Replace Power
B/D

6

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

LGE Internal Use Only

Standard Repair Process

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 .05

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.

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

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

LGE Internal Use Only

Standard Repair Process

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 .05

Electronics 6-3

8/13

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

Check
Speaker
disconnection

Disconnection

Y

Replace Speaker

8

N

Replace MAIN Board End

LGE Internal Use Only

Standard Repair Process

LCD TV

Check input
signal

-RF

-External Input
signal

Error

symptom

C. Audio error

Wrecked audio/ discontinuation/noise

Established

date

Revised date

2008. 3 .05

→ Wrecked au dio/discontinuation/noise is same after “Check input signal” compared to No audio

Signal

normal?

N

Y

(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

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

Check and fix external device

9

LGE Internal Use Only

Standard Repair Process

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?

N

Check 5v on Power B/D

Replace Power B/D or

Replace Main B/D

(Power B/D don’t have problem)

2008. 3 .05

Y

Check IR

Output signal

10/13

Replace

Main B/D

Normal

Signal?

N

Repair/Replace

IR B/D

Y

2. Local(Mechanical) switch operating error

Check & Repair

Check R/C

Operation

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

Normal

operating?

Move

Power problem

Section

Y

Cable connection
Connector solder

N

operating?

Normal

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

LGE Internal Use Only

Y

Standard Repair Process

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 .05

11/13

Replace Main B/D

Replace Main B/D

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

11

LGE Internal Use Only

Standard Repair Process

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

Check location
of noise

Circuit noise, mechanica l noise

E. Noise

Replace inverter

OR

Replace LIPS B/D

Established

date

Revised date

2008. 3 .05

<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)

12/13

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

12

LGE Internal Use Only

Standard Repair Process

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

Adjust VCOM

2008. 3 .05

13/13

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

Stand

dent

Replace stand

13

LGE Internal Use Only

LCD TV Repair Process Index

- Trouble shooting by input block (Component level check)

No. Symptom (L) Input Block Page Remark

1 Power Problem Power-up Boot fail

2 No OSD

3 Digital TV

4 Analog TV

5 AV (Scart / CVBS/ S-Video)

6 Component

7 RGB(D-SUB)

8

9 All Input

10 Digital TV

11 Analog TV

12 AV / Component / RGB, HDMI-PC/ HDMI-DTV

13

14 USB / Remocon Problem USB no connect / Remocon

15 Commercial Function Problem

Video Problem

HDMI

Audio Problem

AV Audio out / No Audio (Headphone & SPDIF)

Clock Display / RJP / IR Out
Buzzer / External Speaker

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Symptom

Power-Up Boot Fail

Making

Revision

2009. 2 . 1

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 L803 = 3.3V ? Replace MAIN B’D IC801

NO

YES

MAIN B’D L813 = 1.26V ? Replace MAIN B’D IC805

NO

YES

MAIN B’D L805 = 3.3V ? Replace MAIN B’D IC806

NO

Replace Power Board

26~42LH200H

YES

Check MAIN B’D X100 Clock

12MHz

NO

Replace MAIN B’D IC100

YES

Replace MAIN B’D IC102

NAND FLASH

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

NO

Replace MAIN B’D IC103

Serial Flash

NO

Replace MAIN B’D

IC300, IC301 DDR2 Memory

NO

Replace MAIN B’D IC100

LGE Internal Use Only

LCD TV

Symptom

Power-Up Boot Fail

Making

Revision

2009. 2 . 1

22LH200H

P801 Pin #5~#6

Voltage Level = 5V ?

YES

P801 Pin #1, 2 = 15V?

YES

MAIN B’D L803 = 3.3V ?

YES

MAIN B’D L813 = 1.26V ?

YES

MAIN B’D L805 = 3.3V ?

YES

Check MAIN B’D X100 Clock

12MHz

Check Power connector

NO YES

Replace Power Board

OK ?

NO

NO

Replace MAIN B’D IC801

NO

Replace MAIN B’D IC805

NO

Replace MAIN B’D IC806

NO

Replace MAIN B’D IC100

Replace Power Board

YES

Replace MAIN B’D IC102

NAND FLASH

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

NO

Replace MAIN B’D IC103

Serial Flash

NO

Replace MAIN B’D

IC300, IC301 DDR2 Memory

Replace MAIN B’D IC100

NO

LGE Internal Use Only

LCD TV

Symptom

No OSD

Making

Revision

2009. 2 . 1

22~42LH200H

P800 Pin #13, 14 = 12V

P800 Pin #17, 18 = 24V ?

YES

P800 Pin #20

Voltage level = 2V ↑

YES

MAIN B’D L1300 = 12V ? Replace MAIN B’D Q806

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

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Symptom

No OSD

Making

Revision

2009. 2 . 1

22LH200H

P801 Pin #1, 2 = 15V?

NO

YES

P801 Pin #9

Voltage level = 2V ↑

YES

MAIN B’D L1300 = 12V ? Replace MAIN B’D Q806

YES

Check LVDS Cable

OK ?

NO

Replace LVDS Cable

NO

NO

YES

Check Power connector

OK ?

Replace MAIN B’D Q802

Replace Main Board

YES

Replace Power Board

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Check RF Cable

YES

Symptom

Digital TV Video Problem

Making

Revision

2009. 2 . 1

22~42LH200H

MAIN B’D L1201 = 5V ?

YES

MAIN B’D L1202 = 3.3V ?

YES

MAIN B’D IC804

Pin #2 = 1.2V ?

YES

MAIN B’D R1210 Clock ?

Replace MAIN B’D IC808

NO

Replace MAIN B’D IC809

NO

Replace MAIN B’D IC804

NO

Replace MAIN B’D TU1200

NO

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Check RF Cable

YES

Symptom

Analog TV Video Problem

Making

Revision

2009. 2 . 1

22~42LH200H

MAIN B’D L1201 = 5V ?

YES

MAIN B’D L1202 = 3.3V ?

YES

MAIN B’D IC804

Pin #2 = 1.2V ?

YES

MAIN B’D R1210 Clock ?

Replace MAIN B’D IC808

NO

Replace MAIN B’D IC809

NO

Replace MAIN B’D IC804

NO

Replace MAIN B’D TU1200

NO

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Check Signal format

Is it supported?

YES

Check the SCART Cable

YES

Symptom

AV1(Scart CVBS) No Video

Problem

Making

Revision

2009. 2 . 1

22~42LH200H

Check MAIN B’D R1117

Video Signal ?

YES

Check MAIN B’D C210

Video Signal ?

YES

Replace MAIN B’D IC 100

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

NO

NO

MAIN B’D JK1100 Check Replace MAIN B’D JK1100

NO

Replace

MAIN B’D C210

LGE Internal Use Only

LCD TV

Check Signal format

Is it supported?

YES

Check the SCART Cable

YES

Symptom

AV1(Scart RGB) No Video
Problem

Making

Revision

2009. 2 . 1

22~42LH200H

Check MAIN B’D JK1100

YES

Check MAIN B’D C200 (RED)

C201 (GREEN)

C202 (BLUE)

Video Signal ?

YES

Replace MAIN B’D IC 100

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

NO

NO

Replace MAIN B’D JK1100

MAIN B’D C200, C201, C202

Replace

LGE Internal Use Only

LCD TV

Check Spec (Refer to User Manual)

Is it supported?

Check the SCART Cable

Symptom

YES

YES

AV1 No Video Out Problem

Making

Revision

2009. 2 . 1

22~42LH200H

Check MAIN B’D C1107

Video Signal ?

NO

Check MAIN B’D C1142

Video Signal ?

YES

Replace MAIN B’D Q1205

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

YES

NO

MAIN B’D JK1100 Check

MAIN B’D IC100 Check

LGE Internal Use Only

LCD TV

Check Signal format

Is it supported?

Check the Component Cable

Symptom

YES

YES

Component No Video/
No Color Problem

Making

Revision

2009. 2 . 1

22~42LH200H

Check MAIN B’D R419

Video Signal ?

YES

Check MAIN B’D C209, C215 (Y)

C216 (Pb)

C214 (Pr)

Video Signal ?

YES

Replace MAIN B’D IC 100

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

NO

MAIN B’D JK400 Check Replace MAIN B’D JK400

NO

NO

Replace

MAIN B’D C209 or C214 or C215 or C216

LGE Internal Use Only

LCD TV

Check Signal format

Is it supported?

Check the RGB Cable

MAIN B’D P400 Pin #2

Video signal ?
R437 has Vsync ?
R440 has Hsync ?

YES

YES

YES

Symptom

NO

RGB No Video Problem

MAIN B’D P400 Check Replace MAIN B’D P400

NO

Making

Revision

2009. 2 . 1

22~42LH200H

Check MAIN B’D C208 (Video)

R246 (HSYNC)
R245 (VSYNC)

YES

Replace MAIN B’D IC 100

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

NO

Replace

MAIN B’D C208 or R246 or R247

LGE Internal Use Only

LCD TV

Check Signal format

Is it supported?

YES

Check the RGB Cable

YES

MAIN B’D P400

Pin #3 (BLUE)

Pin #2 (GREEN)

Pin #1 (RED)

Video signal ?

YES

Check MAIN B’D C212 (RED)

C207 (GREEN)

C213 (BLUE)

Video Signal ?

Symptom

NO

RGB No Color Problem

MAIN B’D P400 Check Replace MAIN B’D P400

NO

Replace

NO

MAIN B’D C212 or C207 or C213

Making

Revision

2009. 2 . 1

22~42LH200H

YES

Replace MAIN B’D IC 100

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Check Signal format

Is it supported?

YES

Check the HDMI Cable

YES

Symptom

HDMI 1~2 All No Video Problem

Making

Revision

2009. 2 . 1

22~42LH200H

Check the ADJUST MENU

EDID OK ?

YES

Replace

MAIN B’D IC107 (HDCP KEY)

NO

Replace MAIN B’D IC 100

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

NO

(Refer to Adjustment Spec)

Download EDID

HDMI1 – ALL MODELS
HDMI2 – Except for 19/22LH250**

LGE Internal Use Only

LCD TV

Check Signal format

Is it supported?

YES

Check the HDMI Cable

YES

MAIN B’D JACK Check

JK600 -> HDMI1
JK601 -> HDMI2

YES

Symptom

HDMI1 or 2 No Video Problem

Making

Revision

2009. 2 . 1

22~42LH200H

Replace MAIN B’D IC 100

※ This case is that HDMI Video doesn’t display at the some HDMI input, not all.

HDMI1 – ALL MODELS
HDMI2 – Except for 19/22LH250**

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Check The Speaker

YES

Symptom

NO

All Source no Audio Problem

Replace Speaker

Making

Revision

2009. 2 . 1

22~42LH200H

Check Speaker Cable

YES

CHECK MAIN B’D

JK700 or JK701

YES

MAIN B’D

L700 = 1.8V

YES

MAIN B’D

Check R720, R721, R722

Signal

YES

MAIN B’D
L705 Pin #1
L704 Pin #2

PWM Signal ?

NO

NO

NO

NO

NO

Replace Speaker Cable

Replace MAIN B’D

JK700 or JK701

Replace MAIN B’D IC803

Replace MAIN B’D IC100

Check P700 Cable

※ If headphone is connected, Speaker sound doesn’t work.

Replace MAIN B’D IC701

NO

YES

Replace MAIN B’D IC 701

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Digital TV Video OK ?

YES

Replace MAIN B’D IC 100

Symptom

Digital TV No Audio Problem

Making

Revision

2009. 2 . 1

22~42LH200H

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Analog TV Video OK ?

YES

Symptom

Analog TV No Audio Problem

Making

Revision

2009. 2 . 1

22~42LH200H

Check MAIN B’D

C231 Signal (SIF)

NO

MAIN B’D TU1200

Pin #17 Signal (SIF)

YES

Replace MAIN B’D IC100

Replace MAIN B’D TU1200

NO

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

AV1 Video OK ?

YES

Check the SCART Cable

YES

Check MAIN B’D JK1100 Replace MAIN B’D JK1100

YES

MAIN B’D

C229 (Right Sound)

C230 (Left Sound)

signal ?

Symptom

NO

YES

AV1 No Audio Problem

Replace MAIN B’D IC 100

Making

Revision

2009. 2 . 1

22~42LH200H

NO

Check MAIN B’D

C229, C230

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Component Video OK ?

YES

Check the CVBS Cable

YES

Symptom

Component No Audio Problem

Making

Revision

2009. 2 . 1

22~42LH200H

Check MAIN B’D JK400 Replace MAIN B’D JK400

YES

MAIN B’D

C2013 (Right Sound)

C2014 (Left Sound)

signal ?

NO

Check MAIN B’D

C2013, C2014

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

NO

Replace MAIN B’D IC 100

YES

LGE Internal Use Only

LCD TV

RGB Video OK ?

YES

Check the PC Audio Cable

YES

Symptom

RGB, HDMI-PC No Audio Problem

Making

Revision

2009. 2 . 1

22~42LH200H

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

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

NO

Replace MAIN B’D IC 100

YES

LGE Internal Use Only

LCD TV

HDMI Video OK ?

YES

Symptom

HDMI-DTV No Audio Problem

Making

Revision

2009. 2 . 1

22~42LH200H

Check the ADJUST MENU

EDID OK ?

YES

Check the HDMI Cable

Download EDID

(Refer to Adjustment Spec)

NO

Replace MAIN B’D IC100

YES

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Symptom

AV1 No Audio Out Problem

Making

Revision

2009. 2 . 1

22~42LH200H

Analog TV Audio OK

YES

Check the SCART Cable

YES

Check MAIN B’D JK1100 Replace MAIN B’D JK1100

YES

MAIN B’D

R239 (Right Sound)

R240 (Left Sound)

signal ?

YES

Replace MAIN B’D

IC1103

NO

NO

NO

Check the Trouble Shooting Guide

Analog TV No video

Replace MAIN B’D IC 100

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Symptom

Headphone No Audio Problem

Making

Revision

2009. 2 . 1

22~42LH200H

Speaker Audio OK

YES

Check the Headphone Cable

YES

Check MAIN B’D JK700 or JK701 Replace MAIN B’D JK700 or JK701

YES

MAIN B’D

R237 (Right Sound)

R238 (Left Sound)

signal ?

YES

Replace MAIN B’D

IC700

NO

NO

Check the Trouble Shooting Guide

Related to Audio Problem

NO

Replace MAIN B’D IC 100

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Symptom

SPDIF No Audio Problem

Making

Revision

2009. 2 . 1

22~42LH200H

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 R230

PWM Signal ?

NO

Replace MAIN B’D IC 100

Check the Trouble Shooting Guide

Related to Audio Problem

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

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

22~42LH200H

Check MAIN B’D

JK405 OK ?

YES

Check MAIN B’D

JK405 Pin #1 5V ?

NO

Check MAIN B’D

R801 5V ?

NO

Check MAIN B’D

R848 12V ?

Replace MAIN B’D JK405

NO

Replace MAIN B’D IC 100

YES

Replace MAIN B’D IC402

YES

Replace MAIN B’D IC808

YES

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Symptom

Remote Control Problem

Making

Revision

2009. 2 . 1

26~42LH200H

Check MAIN B’D P1305

Wafer & Connector

YES

Check IR B’D P1 Wafer

& Connector

Replace it

NO

Replace IR B’D

YES

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Symptom

Remote Control Problem

Making

Revision

2009. 2 . 1

22LH200H

Check MAIN B’D P1305

Wafer & Connector

YES

IR B’D IC1 Pin #3

Voltage 4V ↑ ?

NO

Check IR B’D P1 Wafer

& Connector

NO

YES

NO

Replace it

Replace IR B’D IC1

Replace MAIN B’D IC100

Replace MAIN B’D IC100

NO

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Symptom

Clock display Problem

Making

Revision

2009. 2 . 1

- Direct user setting

Check the “Clock Display” item

on SVC Menu

YES

Check the “Time” item

on user Menu

YES

Check the clock cable

YES

Check I2C line & output

of IC1400,1404

YES

Check the front clock assy

NO

NO

NO

NO

NO

22~42LH200H

Replace the “Clock display” item

from No to Yes .

Check the current time establishment

on “Time” item of user menu.

Replace it

Re-solder or replace the defect part.

Replace the front clock assy

YES

Replace MAIN B’D IC 100

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Symptom

Clock display Problem

Making

Revision

2009. 2 . 1

- Setting that use TTX information & DTV clock information

Check the “Clock Display” item

on SVC Menu

YES

Check the clock cable

YES

Check I2C line & output

of IC901 ,902

YES

Check the front clock assy

NO

NO

NO

NO

- Replace the “Clock display” item
from No to Yes .

- Select “ Clock Source”

& “Programme”

Replace it

Re-solder or replace the defect part.

Replace the front clock assy

22~42LH200H

YES

Replace MAIN B’D IC 100

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Symptom

RJP Problem

Making

Revision

2009. 2 . 1

22~42LH200H

Check the “RJP” item

on SVC Menu

YES

Check the supply 12V power

of RJP.(JK409_Pin1)

YES

Check the JK409

NO

NO

NO

Replace the “RJP” item

from No to Yes .

Check the supply power.

Replace JK409

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Symptom

IR Out Problem

Making

Revision

2009. 2 . 1

22~42LH200H

Check the IR waveform

of R1300

YES

Check the IR waveform

of IC1100_3,6,11Pin

YES

Check the RS-232C Pin4 / HDMI Pin14

NO

NO

NO

Replace the Preamp of IR ass’y.

Re-soldering or replace

the defect part

Replace it

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Symptom

Buzzer Problem

Making

Revision

2009. 2 . 1

22~42LH200H

Check the “Time” item

on user Menu

YES

Check the “Time” item

on user Menu

YES

Check the IC 1405 & BU1400

NO

NO

NO

Check the current time establishment

on “Time” item of user menu

Set to “Alarm Time”

Replace it

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

LCD TV

Symptom

External Speaker Problem

Making

Revision

2009. 2 . 1

22~42LH200H

Check the input

source

YES

IC100 operate

normally?

YES

IC702 operate

normally?

YES

Check JK406

YES

Check the external

speaker

NO

NO

NO

NO

NO

Change input source.

Re-solder or replace

the IC100

Re-solder or Replace

the IC702

Replace it

Replace the external speaker.

Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only