LG 32LH4000 User manual

LCD TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : LD91A
MODEL : 32LH4000 32LH4000-ZA
North/Latin America http://aic.lgservice.com
Europe/Africa http://eic.lgservice.com
Asia/Oceania http://biz.lgservice.com
Internal Use Only

LGE Internal Use OnlyCopyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 2 -
CONTENTS
CONTENTS .............................................................................................. 2
PRODUCT SAFETY ..................................................................................3
SPECIFICATION ........................................................................................6
ADJUSTMENT INSTRUCTION .................................................................9
TROUBLE SHOOTING ............................................................................14
BLOCK DIAGRAM...................................................................................17
EXPLODED VIEW .................................................................................. 18
SVC. SHEET ...............................................................................................

LGE Internal Use OnlyCopyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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SAFETY PRECAUTIONS
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the
Schematic Diagram and Exploded View.
It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent
Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
General Guidance
An isolation Transformer should always be used during the
servicing of a receiver whose chassis is not isolated from the AC
power line. Use a transformer of adequate power rating as this
protects the technician from accidents resulting in personal injury
from electrical shocks.
It will also protect the receiver and it's components from being
damaged by accidental shorts of the circuitry that may be
inadvertently introduced during the service operation.
If any fuse (or Fusible Resistor) in this TV receiver is blown,
replace it with the specified.
When replacing a high wattage resistor (Oxide Metal Film Resistor,
over 1W), keep the resistor 10mm away from PCB.
Keep wires away from high voltage or high temperature parts.
Before returning the receiver to the customer,
always perform an AC leakage current check on the exposed
metallic parts of the cabinet, such as antennas, terminals, etc., to
be sure the set is safe to operate without damage of electrical
shock.
Leakage Current Cold Check(Antenna Cold Check)
With the instrument AC plug removed from AC source, connect an
electrical jumper across the two AC plug prongs. Place the AC
switch in the on position, connect one lead of ohm-meter to the AC
plug prongs tied together and touch other ohm-meter lead in turn to
each exposed metallic parts such as antenna terminals, phone
jacks, etc.
If the exposed metallic part has a return path to the chassis, the
measured resistance should be between 1MΩ and 5.2MΩ.
When the exposed metal has no return path to the chassis the
reading must be infinite.
An other abnormality exists that must be corrected before the
receiver is returned to the customer.
Leakage Current Hot Check (See below Figure)
Plug the AC cord directly into the AC outlet.
Do not use a line Isolation Transformer during this check.
Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor
between a known good earth ground (Water Pipe, Conduit, etc.)
and the exposed metallic parts.
Measure the AC voltage across the resistor using AC voltmeter
with 1000 ohms/volt or more sensitivity.
Reverse plug the AC cord into the AC outlet and repeat AC voltage
measurements for each exposed metallic part. Any voltage
measured must not exceed 0.75 volt RMS which is corresponds to
0.5mA.
In case any measurement is out of the limits specified, there is
possibility of shock hazard and the set must be checked and
repaired before it is returned to the customer.
Leakage Current Hot Check circuit
1.5 Kohm/10W
To Instrument's
exposed
METALLIC PARTS
Good Earth Ground
such as WATER PIPE,
CONDUIT etc.
AC Volt-meter
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
0.15uF
Ω

LGE Internal Use OnlyCopyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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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 wire-
bristle (0.5 inch, or 1.25cm) brush with a metal handle.
Do not use freon-propelled spray-on cleaners.
5. Use the following unsoldering technique
a. Allow the soldering iron tip to reach normal temperature.
(500°F to 600°F)
b. Heat the component lead until the solder melts.
c. Quickly draw the melted solder with an anti-static, suction-
type solder removal device or with solder braid.
CAUTION: Work quickly to avoid overheating the circuit
board printed foil.
6. Use the following soldering technique.
a. Allow the soldering iron tip to reach a normal temperature
(500°F to 600°F)
b. First, hold the soldering iron tip and solder the strand against
the component lead until the solder melts.
c. Quickly move the soldering iron tip to the junction of the
component lead and the printed circuit foil, and hold it there
only until the solder flows onto and around both the
component lead and the foil.
CAUTION: Work quickly to avoid overheating the circuit
board printed foil.
d. Closely inspect the solder area and remove any excess or
splashed solder with a small wire-bristle brush.
SERVICING PRECAUTIONS

LGE Internal Use OnlyCopyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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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 ©2009 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. Electrical specification
4.1 Module General Specification
1. Application range
This specification is applied to the LCD TV used LD91A
chassis.
2. Requirement for Test
Each part is tested as below without special appointment.
1) Temperature : 25±5ºC (77±9ºF), CST : 40±5ºC
2) Relative Humidity : 65±10%
3) Power Voltage : Standard input voltage (100-240V@50/60Hz)
* Standard Voltage of each products is marked by models.
4) Specification and performance of each parts are followed
each drawing and specification by part number in
accordance with BOM.
5) The receiver must be operated for about 5 minutes prior to
the adjustment.
3. Test method
1) Performance: LGE TV test method followed
2) Demanded other specification
- Safety: CE, IEC specification
- EMC:CE, IEC
No Item Specification Remark
1 Screen Device 32” wide color display module LCD
2 Aspect Ratio 16:9
3 LCD Module 32” TFT LCD FHD LGD
4 Storage Environment Temp. : -20 ~ 60 deg
Humidity : 10 ~ 90 %
5 Input Voltage AC100-240V~, 50/60Hz
6 Power Consumption Typ : 116.2, Max : 128.1 FHD
7 Module Size 760.0 (H) x 450.0 (V) x 48.0 (D)
8 Pixel Pitch 0.36375 mm(D)
9 Back Light 14EEFL
10 Display Colors 1.06Billion(FHD LGD),16.7M (others)
11 Coating 3H, AG

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5. Chroma& Brightness
5.1 Module optical specification
1) Standard Test Condition (The unit has been ‘ON’)
2) Stable for approximately 30 minutes in a dark environment at 25±2°…
3) The values specified are at approximate distance 50Cm from the LCD surface
4) Ta=25±2°C, VLCD=12.0V, fV=60Hz, Dclk=74.25MHz VBR_A=1.65V,ExtVBR_B=100%
No. Item Specification Min. Typ. Max. Remark
1. Viewing Angle<CR>10> Right/Left/Up/Down 178 Degree
2. Luminance Luminance (cd/m2) 400 500
Variation - 1.3 MAX /MIN
3. Contrast Ratio CR 900 1300
4. CIE Color Coordinates White WX 0.279
WY 0.292 Typ
RED Xr 0.638 ±0.03
Yr 0.334
Green Xg 0.291
Yg 0.607
Blue Xb 0.145
Yb 0.062
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

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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 60Hz
-> 640*480 60Hz Display
3. 800*600 37.879 60.31 40.00 VESA
4. 1024*768 48.363 60.00 65.00 VESA(XGA)
5. 1280*768 47.78 59.87 79.5 WXGA
6. 1360*768 47.72 59.8 84.75 WXGA
7. 1366*768 47.56 59.6 84.75 WXGA
8. 1280*1024 63.595 60.0 108.875 SXGA FHD model
9. 1600*1200 74.07 59.98 130.375 UXGA FHD model
10. 1280*720 45 60 74.25 720P DTV Standard
11. 1920*1080 66.647 59.988 138.625 WUXGA FHD model
7. RGB (PC)
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. 1366*768 47.56 59.6 84.75 WXGA HDCP
8. 1280*1024 63.595 60.0 108.875 SXGA HDCP
9. 1600*1200 74.07 59.98 130.375 UXGA HDCP
10. 1920*1080 66.647 59.988 138.625 WUXGA HDCP
(2) PC Mode
No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remark
1. 720*480 15.734 /15.6 59.94 /60 27.00 SDTV 480I
2. 720*480 31.469 /31.5 59.94 /60 27.00/27.03 SDTV 480P
3. 720*576 15.625 50 27(54) SDTV 576I
4. 720*576 31.25 50 54 SDTV 576P
5. 1280*720 37.500 50 74.25 HDTV 720P
6. 1280*720 44.96 /45 59.94 /60 74.17/74.25 HDTV 720P
7. 1920*1080 33.72 /33.75 59.94 /60 74.17/74.25 HDTV 1080I
8. 1920*1080 28.125 50.00 74.25 HDTV 1080I
9. 1920*1080 26.97 /27 23.97 /24 74.17/74.25 HDTV 1080P
10. 1920*1080 33.716 /33.75 29.976 /30.00 74.25 HDTV 1080P
11. 1920*1080 56.250 50 148.5 HDTV 1080P
12. 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
- 9 -
ADJUSTMENT INSTRUCTION
1. Application Range
This specification sheet is applied to all of the LCD TV with
LD91A 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±5ºC
Relative humidity : 65±10%
Input voltage : 220V, 60Hz
6) Adjustment equipments: Color Analyzer (CA-210 or CA-
110), DDC Adjustment Jig equipment, SVC remote
controller
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
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
(5)
(7) ……….OK
(5)
(6)
(3)
filexxx.bin
(1) (4)
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)
• 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.
3.2 Function Check
(1) 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 @ 60hz)
5. HDMI
6. PC Audio In
* Display and Sound check is executed by Remote controller.
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Only for training and service purposes
Model Tool option1 Tool option2 Tool option3 Tool option4
32LH4000 16640 2598 36260 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

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 10ux).
2) Adhere closely the Color Analyzer (CA210) to the module
less than 10cm distance, keep it with the surface of the
Module and Color Analyzer’s Prove vertically.(80~100°).
3) Aging time
- After aging start, keep the power on (no suspension of
power supply) and heat-run over 15minutes.
- Using ‘no signal’ or ‘full white pattern’ or the others,
check the back light on.
• Auto adjustment Map(RS-232C)
** 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 “3. White
Balance”.
* After done all adjustments, Press “In-start” button and
compare Tool option and Area option value with its BOM, if
it is correctly same then unplug the AC cable. If it is not
same, then correct it same with BOM and unplug AC cable.
For correct it to the model’s module from factory JIG model.
* Push The “IN STOP KEY” after completing the function
inspection.
4.2. DDC EDID Write (RGB 128Byte )
• Connect D-sub Signal Cable to D-sub Jack.
• Write EDID Data to EEPROM(24C02) by using DDC2B
protocol.
• Check whether written EDID data is correct or not.
* For SVC main Ass’y, EDID have to be downloaded to Insert
Process in advance.
4.3. DDC EDID Write (HDMI 256Byte)
• Connect HDMI Signal Cable to HDMI Jack.
• Write EDID Data to EEPROM(24C02) by using DDC2B
protocol.
• Check whether written EDID data is correct or not.
* For SVC main Ass’y, EDID have to be downloaded to Insert
Process in advance.
4.4. EDID DATA
1) All Data : HEXA Value
2) Changeable Data :
*: Serial No : Controlled / Data:01
**: Month : Controlled / Data:00
***:Year : Controlled
****:Check sum
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Only for training and service purposes
Cool 11,000k ºK X=0.276(±0.002)
Y=0.283(±0.002) <Test Signal>
Medium 9,300k ºK X=0.285(±0.002) Inner pattern
Y=0.293(±0.002) (216gray,85IRE)
Warm 6,500k 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 00 172 192 192 255
G Gain jh Jb je 00 172 192 192 255
B Gain ji Jc jf 00 192 192 172 255
R Cut 64 64 64 128
G Cut 64 64 64 128
B Cut 64 64 64 128

- 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
- Never connect HDMI & D-sub Cable at the same time.
- Use the proper cables below for EDID Writing
- Download HDMI1, HDMI2, separately because HDMI1
is different from HDMI3
1) Analog Data 128Byte (2Bi)
2) DIGITAL DATA(HDMI-1/2/3/4) 256Byte
* Detail EDID Options are below
ⓐProduct ID
ⓑSerial No: Controlled on production line.
ⓒMonth, Year: Controlled on production line:
ex) Monthly : ‘09’ -> ‘09’
Year : ‘2006’ -> ‘10’
ⓔ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 ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 12 -
For Analog EDID
For HDMI EDID
D-sub to D-sub DVI-D to HDMI or HDMI to HDMI
No. Item Condition Hex Data
1 ManufacturerID GSM 1E6D
2 Version Digital : 1 01
3 Revision Digital : 3 03
b
e
a
d
c
d
b
e
a
d
c
d
f
f
MODEL MODEL NAME(HEX)
all 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20
INPUT MODEL NAME(HEX)
HDMI1 67030C001000B82D
HDMI2 67030C002000B82D
HDMI3 67030C003000B82D
Item CMD1 CMD2 Data0
Download A A 0 0 When transfer the ‘Mode In’,
‘Mode In’ Carry the command.
Download A E 00 10 Automatically Download
(The use of a internal pattern)

- 13 - LGE Internal Use OnlyCopyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4.5. V-COM Adjust(Only 37/42/47LH4000-ZA)
- Why need Vcom adjustment?
AThe Vcom (Common Voltage) is a Reference Voltage of
Liquid Crystal Driving.
-> Liquid Crystal need for Polarity Change with every frame.
- Adjust sequence
· After enter Service Mode by pushing “ADJ” key.
· Enter V-Com Adjust mode by pushing “G” key at “10. V-
Com”
· As pushing the right or the left button on the remote
controller, Find the V-COM value that is stopped the Flicker.
· If there is no flicker at default value, turn down or turn up at
least 20 step and check the flicker. Then go to the default
value.
· Push the store button by “OK” key in the ADJ remocon.
4.6. Outgoing condition Configuration
- When pressing IN-STOP key by SVC remocon, Red LED are
blinked alternatively. And then Automatically turn off.
(Must not AC power OFF during blinking)
4.7. Internal pressure
Confirm whether is normal or not when between power
board's ac block and GND is impacted on 1.5kV(dc) or
2.2kV(dc) for one second
5. 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.
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)
Row Line
Column Lin e
CLC CST
Pane l
S
Y
S
T
E
M
Gat e Driv e IC
So urce D r i v e I C
Circuit Block
Ti m i n g
Co nt r o ll er
Po w e r
Blo ck
VCOM
Ga mma
Re f e r e nce V o ltage
Gamm a R eference
Volta ge
Data (R,G ,B ) & C on t ro l s ignal
Con tro l si gn al
Data (R,G,B ) &
Con tro l si gn al
In t e r f a c e
TFT
Po w er I n p u t
Power Input
Da t a I n p u t
Da t a I n p u t
VCOM
Liquid
Crystal
VCOM
(Visual Adjust and control the Voltage level)

LGE Internal Use OnlyCopyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 14 -
1. TV/CATV doesn’t display
TROUBLESHOOTING
2. DTV doesn’t display
Check the output data of TU1200 Pin 4,21,22.
Can you see the normal signal?
NO Could you measure voltage of TU1200 &
IIC lines?
Are they all normal?
NO You should check power line
& IIC lines.
YES
You should replace Main Board.
YES
Check the output of Main IC(IC100).
Especially you should check
The H,V sync and clock.
Can you see the normal waveform?
YES
NO After checking the Power of Main IC(IC100) you
should decide to replace Main IC or not.
This board has big problem because Main
IC(IC100) have some troubles.
After checking thoroughly all path once again,
You should decide to replace Main Board or not.
Check TU1200.
Can you see the normal signal?
Check the output of TR(Q1201).
Can you see the normal waveform?
Check the output of Main IC(IC100).
Especially you should check
The H,V sync and clock.
Can you see the normal waveform?
YES
YES
NO Could you measure voltage of TU1200 &
IIC lines?
Are they all normal?
YES
NO You should check power line
& IIC lines.
YES
You should replace Main Board.
NO
You should decide to replace TR (Q1201) or not.
NO After checking the Power of Main IC(IC100) you
should decide to replace Main IC or not.
This board has big problem because Main
IC(IC100) have some troubles.
After checking thoroughly all path once again,
You should decide to replace Main Board or not.

LGE Internal Use OnlyCopyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 15 -
3. AV 1/2 doesn’t display
Check JK1100, JK1101
Can you see the normal waveform?
NO JK1100, JK1101 may have problem. Replace
this Jack.
Check the output of Main IC(IC100).
Especially you should check
The H,V sync and clock.
Can you see the normal waveform?
YES
NO After checking the Power of Main IC(IC100) you
should decide to replace Main IC or not.
This board has big problem because Main
IC(IC100) have some troubles.
After checking thoroughly all path once again,
You should decide to replace Main Board or not.
YES
4. Component doesn’t display
Check JK400
Can you see the normal waveform?
YES
NO JK400
may have problem. Replace this Jack.
Check the output of Main IC(IC100).
Especially you should check
The H,V sync and clock.
Can you see the normal waveform?
YES
NO After checking the Power of Main IC(IC100) you
should decide to replace Main IC or not.
This board has big problem because Main
IC(IC100) have some troubles.
After checking thoroughly all path once again,
You should decide to replace Main Board or not.

LGE Internal Use OnlyCopyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 16 -
5. RGB PC doesn’t display
Check P400 ,
Can you see the normal waveform?
NO P400
may have problem. Replace this Jack.
Check the output of Main IC(IC100).
Especially you should check
The H,V sync and clock.
Can you see the normal waveform?
YES
NO After checking the Power of Main IC(IC100) you
should decide to replace Main IC or not.
This board has big problem because Main
IC(IC100) have some troubles.
After checking thoroughly all path once again,
You should decide to replace Main Board or not.
YES
6. HDMI doesn’t display
Check input connect JK600, JK601, JK602
Can you see the normal waveform?
Check DDC communication lines(IC100,
IC107)
YES
YES
NO JK600, JK601, JK602
may have problem. Replace this Jack.
NO
After checking the Power of this chip, you
should decide to replace this or not.
YES
Check HDCP communication lines(IC107)
NO
After checking the Power of this chip, you
should decide to replace this or not.
Check the output of Main IC(IC100).
Especially you should check
The H,V sync and clock.
Can you see the normal waveform?
YES
NO After checking the Power of Main IC(IC100) you
should decide to replace Main IC or not.
This board has big problem because Main
IC(IC100) have some troubles.
After checking thoroughly all path once again,
You should decide to replace Main Board or not.

LGE Internal Use OnlyCopyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 17 -
BLOCK DIAGRAM
RGB
COMPONENT
F-SCART
AV3
BUF_TS_CLK/ERR/SYN/DATA[0]
AV_CVBS_IN
DDR2 SDRAM
(1Gb)
IC300
NAND Flash
HYNIX
IC102
USB
Digital amp
(NTP3100L)
IC701
COMP_Y/Pb/Pr
SC1_CVBS_IN
SC2_CVBS_IN
I2S
DSUB_ R/G/B
Tuner
(TDFW-G235D)
TU1200
LCD Panel
74LVC541A
Buffer
IC502
CI Slot
(P500)
74LCX244
Buffer
IC501
PCM_A[0:7]
FE_VMAIN
PCM_A[0:7]
SDDR_D[0:15]
DDR2 SDRAM
(512Mb)
IC301
TDDR_D[0:15]
SDDR_A[0:12]
Mstar S6
LGE3368A
(IC100)
MP6205DH
USB Power
IC402
USB Power
FE_TS_DATA[0:7] ∆ CI_MDI[0:7]
H-SCART
SC1_R/G/B
SC1/2_L/R_IN, FE_AM_AUDIO,AV_L/R_IN, COMP_L/R_IN, PC_L/R_IN
FE_ VOUT
DTV/MNT_VOUT
TDDR_A[0:12]
TPA6110A
IC700
Head
Phon e
RS-232C
MAX3232CDR
IC403
SPDIF SPDIF_OUT
DSUB_H/VSYNC
HP_L/ROUT
L/R
CI_TS_DATA[0:7]
PCM_D[0:7] ∆ CI_DATA[0:7]
CI_ADDR[0:7]
AUDIO IN
DGB_TX/RX
HPD1/2/3, HDMI_CEC TMDS[0:7] ( Data, Clock (+/-))
USB_DM/DP
EEPROM
M24512-WMW6
(IC105)
EEPROM
CAT24WC08W-T
(HDCP)IC107
I2C
LVDS (10 bit)
Serial Flash
IC103
For Boot
KIA7427
(IC101)
Voltage Detector
Reset
5V_HDMI_1/2/3 HDMI 1/2/3

- 18 - LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
300
200 801
LV1
900
510
500
310 120
806
803
804
805
530 540
521
400
550
A2 A10
121
122
802
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

- 27 -
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.
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[7] PCM_A[6] PCM_A[5] PCM_A[4] PCM_A[0] PCM_A[1] PCM_A[3] PCM_A[2]
PCM_A[8] PCM_A[9] PCM_A[10] PCM_A[12] PCM_A[13] PCM_A[11] PCM_A[14]
PCM_D[0] PCM_D[1] PCM_D[2] PCM_D[3] PCM_D[4] PCM_D[5] PCM_D[6] PCM_D[7]
CI_TS_DATA[0] CI_TS_DATA[1] CI_TS_DATA[3] CI_TS_DATA[2] CI_TS_DATA[5] CI_TS_DATA[4] CI_TS_DATA[7] CI_TS_DATA[6]
ISP_TXD
EEPROM_SDA E20;T19;Y14
REAR_USB_DM
4:AJ5
REAR_USB_DP
4:AJ6
FE_TUNER_SDA
IC102
HY27US08121B-TPCB
26 NC_17 27 NC_18 28 NC_19 29 I/O0 30 I/O1 31 I/O2 32 I/O3 33 NC_20 34 NC_21 35 NC_22 36 VSS_2 37 VCC_2 38 PRE 39 NC_23 40 NC_24 41 I/O4 42 I/O5 43 I/O6 44 I/O7 45 NC_25 46 NC_26 47 NC_27 48 NC_28
17
ALE
3
NC_3
6
NC_6
16
CLE
15
NC_10
14
NC_9
13
VSS_1
12
VCC_1
11
NC_8
10
NC_7
9
CE
8
RE
7
R/B
4
NC_4
5
NC_5
25 NC_16
24
NC_15
23
NC_14
2
NC_2
22
NC_13
21
NC_12
1
NC_1
20
NC_11
19
WP
18
WE
Q100 KRC103S
OPT
E
B
C
+3.3V
PCM_A[0-14]
+3.3V +3.3V
SPI_DI
/PF_CE0
IC103
W25X32VSSIG
3
WP
2
DO
4
GND
1
CS
5DIO 6CLK 7HOLD 8VCC
SPI_CS
+3.3V
Q101
KRC103S
OPT
E
B
C
+3.3V
+3.3V
FE_TUNER_SCL
SDA0 SCL0
Flash_WP_1
R174 0 R175 0
R102 0
OPT
R197 15K
OPT
R196
15K
OPT
R193 1M
R172 0
AR102
22
AR103
22
/PF_CE0
C4
/PF_CE1
D6
/PF_OE
C4
/PF_WE
D7
PF_WP
A7
PF_ALE
D6
/F_RB
C3
AR100
22
AR101
22
/F_RB
/PF_OE
/PF_WE
/PF_CE1
PF_ALE
PF_WP
PCM_A[0-7]
SPI_CS SPI_CK
SPI_CK
SPI_DO
R101 0
SPI_DO
SPI_DI G12
PCM_D[0-7]
PCM_RST
/PCM_OE
/PCM_REG
/PCM_WE
/PCM_IOWR
/PCM_IORD
/PCM_CE
/PCM_CD
/PCM_WAIT
/PCM_IRQA
PCM_5V_CTL 5:D24 CI_TS_DATA[0-7]
IR
11:X16;11:AD14
+3.3V_ST
SC_RE2 9:N25
SIDE_HP_MUTE 7:G26
SCART2_MUTE
9:AI24
NTP_MUTE
7:R15
BIT_SEL 6:AI16;6:AL7;6:AL12
HP_DET
AMP_RST
7:F6
SCART1_MUTE 9:AI25
ERROR_OUT
8:C6
SC_RE1 9:N24
KEY2
11:Y10
KEY1
11:Y9
BUF_TS_VAL_ERR5:V21 BUF_TS_SYN 5:V22 BUF_TS_CLK 5:V21 BUF_TS_DATA[0] 5:V22 CI_TS_CLK 5:D10 CI_TS_SYN 5:D10 CI_TS_VAL 5:D10
USB_CTL 4:AL4
PWM1
C104
0.1uF
C106 0.1uF
C103
0.1uF
R1513 33 R1514 33 R1515 33 R1516 33 R1510 33 R1517 33 R1511 33 R1518 33 R1512 33 R1519 33
R112 1K
OPT
R105 1K
OPT
R103
10K
R104
10K
R111 3.9K
R1524 33 R1525 33 R1526 33
R1530
33
R1533
4.7K
+3.3V
EEPROM_SDA
E16;E20;T19
R1539
1K
R1540 1K
L102
EEPROM_SCL
E16;T19;Y13
IC107
CAT24WC08W-T
3
A2
2
A1
4
VSS
1
A0
5SDA 6SCL 7WP 8VCC
+3.3V
EEPROM_SDA
E16;T19;Y14
EEPROM_SCL E19;T19;Y13
SCART2_DET
INV_CTL 8:M10
Flash_WP_1 A11 SCL1 T22 SDA1 T22
PANEL_CTL 8:Q8
WARM_LED_ON/LED_W
8:B11
DBG_RX POWER_ON/OFF1
8:P5
USB_OCD 4:AG3
SDA_SUB/AMP
7:F12;11:AG10 SDA1 AK12
R123 0
FE_DEMOD_SDA
10:I12
SCL_SUB/AMP
7:F13;11:AG9
R128 0
R122 0
R129 0
EEPROM_SDA E16;E20;Y14
SDA0 T21;Y14 SCL0 T21;Y14
R124
4.7K
FE_DEMOD_SCL
10:I12
EEPROM_SCL E16;E19;Y13
R125
4.7K
SCL1 AK12
+3.3V
SCART1_DET
EEPROM_SCL
E16;E19;T19
ISP_RXD
COMP_DET DSUB_DET
AV_CVBS_DET 4:M4
R151 0
R1509 0
OPT
R131 0 FRC/LVDS_B
MEMC_SCL
11:Q8
MEMC_SDA
11:J8 R130 0 FRC/LVDS_B SDA0 T21;Y14
SCL0 T21;Y14
5V_HDMI_2 5V_HDMI_1
X100
12MHz
SB_MUTE
7:G25;7:R15;9:AI24;9:AI25
ISP_TXD
+3.3V_ST
R115
10K
IC101
KIA7427F
2
GND
3OUT
1
VCC
C101
0.022uF
16V
R107
470
SIDE_USB_DM 4:AJ6
R132
15K
OPT
R133 15K
OPT
R179 0 R178 0
SIDE_USB_DP 4:AJ5
OPC_EN 11:N20
PWM0 PWM1
IC105
M24512-WMW6
3
E2
2
E1
4
VSS
1
E0
5SDA 6SCL 7WC
8VCC
DBG_TX DBG_RX
EDID_WP 9:AI24
LVDS_SEL 10:AA4
+3.3V
C105
10uF 6.3V
LED_ON/LED_R
POWER_DET
/FE_RESET MODEL_OPT_3
MODEL_OPT_2 MODEL_OPT_0
MEMC_RESET
+3.3V
MODEL_OPT_1
FE_AGC_SPEED_CTL
MODEL_OPT_1 MODEL_OPT_2
R189 0
MODEL_OPT_0
MODEL_OPT_3
R126 0
FE_BOOSTER_CTL 10:AA4
+5V_GENERAL
R1504
4.7K
FE_TUNER_SCL
AI13;10:I9
R1505
4.7K
FE_TUNER_SDA
AI13;10:I9
C111 20pF
C112
20pF
+3.3V
R1507
1.2K
R1506
1.2K
R1550 100
POWER_DET
+3.3V_ST
R1544 100
PWM0 PWM2
PWM_DIM
A_DIM
C1500
1uF OPT
C1501 2.2uF
OPT
+24V/+15V +12V/+15V
PWM2
11:AE17
PWM0
DBG_TX
POWER_DET
+3.3V_TUNER
R146 0
R1160
R173 0
R168 0
R100
0
C114 0.1uF
C100 0.1uF
R150 100
OPT
R156 100
R147 100
R157 100 R166 100
R148 100
R160 100
R154 100 R183 100
R153 100 R190 100
R177 100
R191 100 R188 100
R127 100
R184 100 R185 100 R159 100 R186 100 R167 100
R1534 100 V4
R182 100
OPT
R1523 100
R187 100
OPT
R1520 100
R155 100
R192 100
R1601 100 R1600 100
FRC/LVDS_B
R1543
10K
R195
10K
R198
1K
R1500
1K
OPT
R199
1K
OPT
R1501
1K
R161 22
R171 22
R140 22
R141 22 R142 22 R143 22
R1537 22 R1538 22
R169 22 R170 22
R158 4.7K
R152
4.7K
OPT
R1521
3.6K
19~32
R1527
1K
1%
26~32
R1528
2.7K
1%
37~47
R1529
1.8K
37~47
C102 10uF
6.3V
R1502
2.2K
R1503
2.2K
R1611 100
R1603
3.3K
FHD
R1605
3.3K
LED_NORMAL
R1607
3.3K
FRC/LVDS_B
R1609
3.3K
IC100
LGE3368A (Saturn6 No-DivX)
HWRESET
D4
PCMD0/CI_D0
AC16
PCMD1/CI_D1
AA15
PCMD2/CI_D2
AA16
PCMD3/CI_D3
AC6
PCMD4/CI_D4
Y10
PCMD5/CI_D5
Y11
PCMD6/CI_D6
Y12
PCMD7/CI_D7
Y13
PCM_A0/CI_A0
AB16
PCM_A1/CI_A1
AC15
PCM_A2/CI_A2
AC14
PCM_A3/CI_A3
AB14
PCM_A4/CI_A4
AC12
PCM_A5/CI_A5
AB8
PCM_A6/CI_A6
AC13
PCM_A7/CI_A7
AA9
PCM_A8/CI_A8
AB5
PCM_A9/CI_A9
AA4
PCM_A10/CI_A10
V4
PCM_A11/CI_A11
Y4
PCM_A12/CI_A12
AB9
PCM_A13/CI_A13
AA7
PCM_A14/CI_A14
AD6
PCM_RST/CI_RST
AA14
PCM_CD/CI_CD
AB18
/PCM_OE
Y5
PCM_REG/CI_CLK
AB15
PCM_WAIT/CI_WACK
AA10
/PCM_IRQA
AC8
/PCM_WE
AC7
PCM_IOWR/CI_WR
AA5
PCM_IOR/CI_RD
W4
/PCM_CE
T4
/PF_CE0
AE6
/PF_CE1
AF6
/PF_OE
AA12
/PF_WE
AA11
PF_ALE
AC9
PF_AD15
Y14
F_RBZ
AB11
UART2_TX/SCKM
F8
UART2_RX/SDAM
D11
DDCR_DA
AB21
DDCR_CK
AC21
DDCA_CLK
J1
DDCA_DA
J2
UART_RX2
W5
UART_TX2
V5
PWM0
AB13
PWM1
AB12
PWM2
AD12
PWM3
AA13
SAR0
A4
SAR1
B4
SAR2
F4
SAR3
E4
IRIN
C4
GPIO44
AC11
GPIO96
D9
GPIO88
D10
GPIO90/I2S_OUT_MUTE
D7
GPIO91
E11
GPIO97
E8
GPIO98
E10
GPIO99
D6
GPIO103/I2S_OUT_SD3
D5
GPIO102
C5
XIN B3
XOUT A3
TESTPIN/GND E6
SPI_DI AE11 SPI_DO AF12
/SPI_CS AE12
SPI_CK AD11
USB_DP_1 B5 USB_DM_1 A5 USB_DM_2 AC10 USB_DP_2 AB10
GPIO_PM0/GPIO134 E5 GPIO_PM1/GPIO135 F5 GPIO_PM2/GPIO136 G5 GPIO_PM3/GPIO137 H5 GPIO_PM4/GPIO138 F6
GPIO_PM5/INT1/GPIO139 G6 GPIO_PM6/INT2/GPIO140 H6
GPIO131/LDE/SPI_WPn1 AC17
GPIO130/LCK AB17
GPIO132/LHSYNC/SPI_WPn AF11
GPIO60/PCM2_RESET/RX1 AA18
GPIO62/PCM2_CD_N/TX1 AA17
LHSYNC2/I2S_OUT_MUTE/RX1 E7
LVSYNC/GPIO133 AC18
GPIO79/LVSYNC2/TX1 C6
UART2_RX/GPIO84 F9 UART2_TX/GPIO85 F10 UART1_RX/GPIO86 A6 UART1_TX/GPIO87 B6
GPIO42/PCM2_CE_N AF5
GPIO43/PCM2_IRQA_N AF10
TS0_D0 AA8
TS0_D1 Y8 TS0_D2 Y9 TS0_D3 AB7 TS0_D4 AA6 TS0_D5 AB6 TS0_D6 U4 TS0_D7 AC5
TS0_SYNC AC4
TS0_VLD AD5 TS0_CLK AB4
TS1_D0 AB19
TS1_SYNC AA20
TS1_VLD AC19 TS1_CLK AA19 ET_TXD0 C10 ET_TXD1 B11
ET_TX_CLK A9
ET_RXD0 C11 ET_RXD1 C9
ET_TX_EN B10
ET_MDC A10
ET_MDIO B9
ET_COL A11 GPIO67 A7 GPIO68 B8
IC1500
KIA7042AF
2
G
3O
1
I
R1545 100
R1508
1.8K
19~22
R109 4.7K
R1606
3.3K
LED_MOVING
R1610
OPT
R1604
3.3K
HD
R1608
3.3K
NO_FRC/LVDS_A
R110 22
R113 22
R1536 0
R165 0 R164 0 R163 0 R162 0
R1535 0
C107
8pF
OPT
C108 8pF
OPT
EEPROM
REAR_USB
Serial FLASH MEMORY for BOOT
I2C
NAND FLASH MEMORY
10 : BOOT 51 11 : BOOT RISC
MCU BOOT STRAP
/PF_CE0 H : Serial Flash L : NAND Flash /PF_CE1 H : 16 bit L : 8 bit
Addr:10101--
HDCP EEPROM
IC105: EAN43352801(ATMEL SHRINK)
PM GPIO Assignment Recommended by MStar
1386 WON
$0.76
$0.418
$0.199
VOLTAGE DETECTOR
*Mstar reset:Active high reset
SIDE_USB
0IMMRMP008A(MICROCHIP)
POWER DETECT
MODEL OPTION
080923_Time Delay
DIMMING
MODEL_OPT_1
LOW
MODEL_OPT_2
PIN NAME
PDP
HD
MODEL OPTION
MODEL_OPT_0
E11
PIN NO.
MODEL_OPT_3
HIGH
FRC LCD
NO_FRC
D7
LED_NORMAL LED_MOVING
B9
D6
FHD
LVDS_ALVDS_B
B9(FHD)
B9(HD)
SCHEMATIC DIAGRAM
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
MAIN 1

- 28 -
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.
SC1_CVBS_IN
E21;9:O4
FE_VMAIN
10:AA8
AV_CVBS_IN
4:M2
SC1_R_IN 9:J12
SC1_FB
9:O6
SC1_L_IN 9:J10
SCART1_Rout 9:T14 SCART1_Lout 9:S12 SPDIF_OUT 4:T11 HP_ROUT 7:G21
HP_LOUT 7:G19
SCART2_Lout 9:AM13 SCART2_Rout 9:AN15
DTV/MNT_VOUT
9:AL4
SC1_ID
9:P8
SC1_CVBS_IN
E17;9:O4
SC2_CVBS_IN
9:AE2
R228 100 R209 100
C230 2.2uF C229 2.2uF
DSUB_HSYNC
4:C22
DSUB_VSYNC
4:C22
R229 390
1%
Check
FE_SIF 10:P13
R241 47
MS_LRCK 7:F12 MS_LRCH 7:F12 AUDIO_MASTER_CLK 7:F7 MS_SCK 7:F12
R231 22 R232 22 R233 22 R234 22
+3.3V
R242 47
+3.3V_AVDD
+1.8V_DDR
+3.3V_S6
L209
BLM18PG121SN1D
+3.3V
+3.3V_S6
L206
BLM18PG121SN1D
+3.3V_S6
+3.3V_S6
L210
BLM18PG121SN1D
+3.3V_VDDP
+3.3V
+1.8V_DDR
C2006 2.2uF C2007 2.2uF
+3.3V_AVDD_MPLL
+1.26V_VDDC
+1.26V_VDDC
+3.3V_VDDP
R204 100
R210 47 R215 47 R216 47 R211 47 R213 47 R217 47 R212 47 R218 47 R206 47 R220 47 R224 47 R205 47 R219 47 R226 47 R223 47 R222 47 R227 47
R246 22
R245 22
C222 0.047uF C214 0.047uF C201 0.047uF C217 0.047uF C221 0.047uF C210 0.047uF C207 0.047uF C216 0.047uF C206 0.047uF C204 0.047uF C212 0.047uF C200 0.047uF C218 0.047uF C205 0.047uF C215 0.047uF C213 0.047uF C202 0.047uF C211 0.047uF
C231 0.1uF C232 0.1uF
C224 0.1uF
C2008 2.2uF C2009 2.2uF SC2_L_IN 9:AE10
SC2_R_IN 9:AE11
C2011 2.2uF C2012 2.2uF C2013 2.2uF C2014 2.2uF C2015 2.2uF C2016 2.2uF
C2024 0.047uFR235 47 C2019 0.047uFR236 47
R237 100 R238 100 R239 100 R240 100 R250 100 R251 100
R252
22K
R253
22K
R254
22K
R255
22K
R256
22K
R257
22K
C2018
0.01uF
C2021
0.01uF
C2023
0.01uF
C2017
0.01uF
C2022
0.01uF
C2020
0.01uF
C239 22pF
OPT
C236 22pF
OPT
C238 22pF
OPT
C237 22pF
OPT
R243
10K
R244
10K
CK-_HDMI1
6:K8
DDC_SDA_1
6:K7;6:AL9
D2+_HDMI1
6:K12
D1+_HDMI1
6:K11
D1-_HDMI1
6:K10
CK+_HDMI1
6:K9
D0+_HDMI1
6:K10
D0-_HDMI1
6:K9
DDC_SCL_1
6:K7;6:AL9
HPD1
6:J6
D2-_HDMI1
6:K11
R200 100
D0-_HDMI2
6:K20
D2-_HDMI2
6:K22
CK-_HDMI2
6:K19
D0+_HDMI2
6:K21
HPD2
6:J16
D2+_HDMI2
6:K22
DDC_SCL_2
6:K18;6:AL18
CK+_HDMI2
6:K20
D1+_HDMI2
6:K21
DDC_SDA_2
6:K18;6:AL19
D1-_HDMI2
6:K21
D0-_HDMI3
6:X15
D2-_HDMI3
6:X17
CK-_HDMI3
6:X14
D0+_HDMI3
6:X15
HPD3
6:W11
D2+_HDMI3
6:X17
DDC_SCL_3
6:X13;6:AL13
CK+_HDMI3
6:X15
D1+_HDMI3
6:X16
DDC_SDA_3
6:X13;6:AL14
D1-_HDMI3
6:X16
HDMI_CEC
6:AM25
DSUB_R
4:C26
DSUB_G
4:C24
DSUB_B
4:C23
COMP_Pr
4:K13
COMP_Pb
4:K12
COMP_Y
4:K11
SC1_R
9:J6
SC1_B
9:J9
SC1_G
9:J8
PC_L_IN 4:Z6 PC_R_IN 4:Z5 AV_L_IN 4:M5 AV_R_IN 4:M6 COMP_L_IN 4:K13 COMP_R_IN 4:K15
LVA_2M 11:Q7 LVB_3M 11:Q15;11:Q9 LVB_2P 11:J9;11:M15 LVB_0M 11:Q16;11:Q10 LVA_4M 11:Q6 LVB_1M 11:Q16;11:Q10
LVA_CKP 11:J7
LVB_0P 11:J10;11:M16 LVA_1M 11:Q7 LVA_0P 11:J8 LVB_3P 11:J9;11:M15 LVA_4P 11:J6 LVA_3P 11:J7
LVA_CKM 11:Q7
LVB_4M 11:Q15;11:Q9 LVB_1P 11:J10;11:M16 LVB_4P 11:J9;11:M15 LVA_0M 11:Q8
LVB_CKP 11:J9;11:M15
LVA_2P 11:J7 LVA_3M 11:Q7
LVB_CKM 11:Q15;11:Q9
LVA_1P 11:J7 LVB_2M 11:Q15;11:Q10
R258
22
R259
22
R261
22
R260
22
R264
22
R262
22
R263
22
R265
22
5V_HDMI_3
R267
22
R268
22
R269
22
R270
22
R271
22
R272
22
R273
22
R275
22
R276
22
R277
22
R278
22
R279
22
R280
22
R281
22
R282
22
R283
22
R247 100
+3.3V_S6
C225 10uF 6.3V
C2044
10uF
C2043
10uF
C2025 10uF 6.3V
R284 100
SC2_ID
9:P8
R214 470 R225 470 R221 470
R274 100
OPT
C209 1000pF C208 1000pF C203 1000pF
FE_VSCART_OUT
R208 0 R201 0 R202 0 R248 0 R249 0 R207 0
C223 0.1uF
C226 0.1uF
C2031 0.1uF
C246 0.1uF
C2004 0.1uF
C2026 0.1uF
C247
0.1uF
C252 0.1uF
C2034 0.1uF
C2042 0.1uF
C297 0.1uF
C259 0.1uF
C275 0.1uF
C249 0.1uF
C2038 0.1uF
C264 0.1uF
C2035 0.1uF
C245 0.1uF
C248 0.1uF
C257 0.1uF
C258
0.1uF
C241
0.1uF
C281 0.1uF
C2005 0.1uF
C2003 0.1uF
C296 0.1uF
C2041 0.1uF
C265
0.1uF
C2036 0.1uF
C251 0.1uF
C2001 0.1uF
C289 0.1uF
C253
0.1uF
C2039 0.1uF
C283 0.1uF
C243 0.1uF
C2000 0.1uF
C294 0.1uF
C276
0.1uF
C242 0.1uF
C2040 0.1uF
C277 0.1uF
C254 0.1uF
C291 0.1uF
C2032 0.1uF
C2033 0.1uF
C2037 0.1uF
C266 0.1uF
C250
0.1uF
C244
0.1uF
C2030 0.1uF
C262 0.1uF
C293
0.1uF
C2029
0.1uF
C273 0.1uF
C256
0.1uF
C279 0.1uF
C271
0.1uF
C260
0.1uF
C284 0.1uF
C263 0.1uF
C267
0.1uF
C274
0.1uF
C269
0.1uF
C286 0.1uF
C234 0.1uF
C235 0.1uF
C233
0.1uF
R203 100
R230 100
R266 100
C227 1uF
C2027
10uF
C228 4.7uF
LGE3368A (Saturn6 No-DivX)
IC100
RXACKP
F1
RXACKN
F2
RXA0P
G2
RXA0N
G3
RXA1P
H3
RXA1N
G1
RXA2P
H1
RXA2N
H2
DDCD_A_DA
A1
DDCD_A_CK
B2
HOTPLUG_A
A2
RXBCKP
C3
RXBCKN
B1
RXB0P
C1
RXB0N
C2
RXB1P
D2
RXB1N
D3
RXB2P
E3
RXB2N
D1
DDCD_B_DA
E1
DDCD_B_CK
F3
HOTPLUG_B
E2
RXCCKP
AE8
RXCCKN
AD8
RXC0P
AD9
RXC0N
AF8
RXC1P
AF9
RXC1N
AE9
RXC2P
AE10
RXC2N
AD10
DDCD_C_DA
AE7
DDCD_C_CK
AF7
HOTPLUG_C
AD7
CEC
J3
HSYNC0/SC1_ID
N2
VSYNC0/SC1_FB
N1
RIN0P/SC1_R
P2
GIN0P/SC1_G
R3
BIN0P/SC1_B
R1
SOGIN0/SC1_CVBS
P3
RINM
P1
BINM
T3
GINM
R2
HSYNC1/DSUB_HSYNC
K3
VSYNC1/DSUB_VSYNC
K2
RIN1P/DSUB_R
L1
GIN1P/DSUB_G
L3
BIN1P/DSUB_B
K1
SOGIN1
L2
RIN2P/COMP_PR+
V1
GIN2P/COMP_Y+
V2
BIN2P/COMP_PB+
U1
SOGIN2
V3
VSYNC2
J5
CVBS1/SC1_CVBS
U3
CVBS2/SC2_CVBS
U2
CVBS3/SIDE_CVBS
T1
VCOM1
T2
CVBS4/S-VIDEO_Y
M1
CVBS6/S-VIDEO_C
M2
CVBS5
N3
CVBS7
M3
CVBS0/RF_CVBS
W1
VCOM0
Y3
CVBSOUT0/SC2_MNTOUT
Y2
CVBSOUT1
AA2
LVA0P AE16 LVA0M AD16 LVA1P AD15 LVA1M AF16 LVA2P AF15 LVA2M AE15 LVA3P AD13 LVA3M AF14 LVA4P AF13 LVA4M AE13
LVACKP AE14 LVACKM AD14
LVB0P AE20 LVB0M AD20 LVB1P AD19 LVB1M AF20 LVB2P AF19 LVB2M AE19 LVB3P AD17 LVB3M AF18 LVB4P AF17 LVB4M AE17
LVBCKP AE18 LVBCKM AD18
AUR0 AA3 AUL0 Y1 AUR1 AE1 AUL1 AF3 AUR2 AE3
AUL2 AE2
AUR3 AA1 AUL3 AB1 AUR4 AB2 AUL4 AC2 AUR5 AB3
AUL5 AC3
SIF0P W3 SIF0M W2
SPDIF_IN F11
SPDIF_OUT E9
AUOUTR0/HP_ROUT AF1 AUOUTL0/HP_LOUT AF2
AUOUTR1/SC1_ROUT AD3 AUOUTL1/SC1_LOUT AD1 AUOUTR2/SC2_ROUT AC1 AUOUTL2/SC2_LOUT AD2
I2S_OUT_MCK A8
I2S_OUT_WS B7
I2S_OUT_BCK C7
I2S_OUT_SD D8
I2S_IN_SD C8
VCLAMP K4
REFP H4 REFM J4 REXT G4
AUCOM AE5 AUVRM AE4 AUVRP AF4 AUVAG AD4
IC100
LGE3368A (Saturn6 No-DivX)
VDDC_1 D16 VDDC_2 D17 VDDC_3 D18 VDDC_4 D19 VDDC_5 D20 VDDC_6 H18 VDDC_7 H19 VDDC_8 H20 VDDC_9 J20
VDDC_10 K20 VDDC_11 L20 VDDC_12 M20 VDDC_13 P7 VDDC_14 R7 VDDC_15 T7 VDDC_16 T22 VDDC_17 U7 VDDC_18 U20 VDDC_19 U22 VDDC_20 V7 VDDC_21 V22 VDDC_22 W11 VDDC_23 W12 VDDC_24 W19 VDDC_25 W20 VDDC_26 W22 VDDC_27 Y22
VDDP_1 H9 VDDP_2 H10 VDDP_3 H11 VDDP_4 H12 VDDP_5 N20 VDDP_6 P20 VDDP_7 W9 VDDP_8 W10
AVDD_AU W7
AVDD_DDR_1 G12 AVDD_DDR_2 G13 AVDD_DDR_3 H13 AVDD_DDR_4 H14 AVDD_DDR_5 H15 AVDD_DDR_6 H16 AVDD_DDR_7 W14 AVDD_DDR_8 W15 AVDD_DDR_9 W16
AVDD_DDR_10 W17 AVDD_DDR_11 W18
AVDD_MEMPLL_1 H17 AVDD_MEMPLL_2 T20 AVDD_MEMPLL_3 V20
AVDD_LPLL R20
AVDD_MPLL H7 AVDD_33_1 J7 AVDD_33_2 K7 AVDD_33_3 L7 AVDD_33_4 M7 AVDD_33_5 N7
AVDD_DM W8
AVDD_USB H8
GND_2
E16
GND_3
E17
GND_4
E18
GND_5
F7
GND_6
L9
GND_7
L10
GND_8
L11
GND_9
L12
GND_10
L13
GND_11
L14
GND_12
L15
GND_13
L16
GND_14
L17
GND_15
L18
GND_16
M9
GND_17
M10
GND_18
M11
GND_19
M12
GND_20
M13
GND_21
M14
GND_22
M15
GND_23
M16
GND_24
M17
GND_25
M18
GND_26
N4
GND_27
N9
GND_28
N10
GND_29
N11
GND_30
N12
GND_31
N13
GND_32
N14
GND_33
N15
GND_34
N16
GND_35
N17
GND_36
N18
GND_37
P4
GND_38
P9
GND_39
P10
GND_40
P11
GND_41
P12
GND_42
P13
GND_43
P14
GND_44
P15
GND_45
P16
GND_46
P17
GND_47
P18
GND_48
R4
GND_49
R9
GND_50
R10
GND_51
R11
GND_52
R12
GND_53
R13
GND_54
R14
GND_55
R15
GND_56
R16
GND_57
R17
GND_58
R18
GND_59
T5
GND_60
T9
GND_61
T10
GND_62
T11
GND_63
T12
GND_64
T13
GND_65
T14
GND_66
T15
GND_67
T16
GND_68
T17
GND_69
T18
GND_70
U5
GND_71
W13
GND_72
Y21
GND_73
AA23
Close to IC as close as possible
HDMI
SCART_RGB
DSUB
CVBS
TV/MNT COMP
AUDIO IN
LVDS OUT
AUDIO OUT
VDDC : 970mA
VDDP : 102.3mA
AVDD_AU : 36.11mA
AVDD_MEMPLL : 23.77mA
AVDD_LPLL : 4.69mA
AVDD_33 : 281mA
AVDD_DM : 0.03mA
AVDD_OTG : 22.96mA
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
M