22LD350 - chassis LB01A.pdf part of LG 22LD350 22LD350 - chassis LB01A.pdf, manual service text manual preview

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LCD TV
SERVICE MANUAL
CHASSIS : LB01A

MODEL : 22LD350 22LD350-TA

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

P/NO : MFL62865309 (1002-REV00) Printed in Korea
CONTENTS

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

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

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

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

BLOCK DIAGRAM...................................................................................16

EXPLODED VIEW .................................................................................. 17

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

Copyright © 2010 LG Electronics. Inc. All rights reserved. -2- LGE Internal Use Only
Only for training and service purposes
SAFETY PRECAUTIONS

IMPORTANT SAFETY NOTICE
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 Leakage Current Hot Check (See below Figure)
Plug the AC cord directly into the AC outlet.
An isolation Transformer should always be used during the
servicing of a receiver whose chassis is not isolated from the AC Do not use a line Isolation Transformer during this check.
power line. Use a transformer of adequate power rating as this Connect 1.5 K / 10 watt resistor in parallel with a 0.15 uF capacitor
protects the technician from accidents resulting in personal injury between a known good earth ground (Water Pipe, Conduit, etc.)
from electrical shocks. and the exposed metallic parts.
Measure the AC voltage across the resistor using AC voltmeter
It will also protect the receiver and it's components from being with 1000 ohms/volt or more sensitivity.
damaged by accidental shorts of the circuitry that may be Reverse plug the AC cord into the AC outlet and repeat AC voltage
inadvertently introduced during the service operation. measurements for each exposed metallic part. Any voltage
measured must not exceed 0.75 volt RMS which is corresponds to
If any fuse (or Fusible Resistor) in this TV receiver is blown, 0.5 mA.
replace it with the specified. In case any measurement is out of the limits specified, there is
possibility of shock hazard and the set must be checked and
When replacing a high wattage resistor (Oxide Metal Film Resistor, repaired before it is returned to the customer.
over 1 W), keep the resistor 10 mm away from PCB.
Leakage Current Hot Check circuit
Keep wires away from high voltage or high temperature parts.

Before returning the receiver to the customer, AC Volt-meter

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 Good Earth Ground
shock. such as WATER PIPE,
To Instrument's CONDUIT etc.
0.15 uF
Leakage Current Cold Check(Antenna Cold Check) exposed
With the instrument AC plug removed from AC source, connect an METALLIC PARTS
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 1.5 Kohm/10W
plug prongs tied together and touch other ohm-meter lead in turn to
each exposed metallic parts such as antenna terminals, phone
jacks, etc. When 25A is impressed between Earth and 2nd Ground
If the exposed metallic part has a return path to the chassis, the for 1 second, Resistance must be less than 0.1
measured resistance should be between 1 M and 5.2 M.
*Base on Adjustment standard
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.

Copyright © 2010 LG Electronics. Inc. All rights reserved. -3- LGE Internal Use Only
Only for training and service purposes
SERVICING PRECAUTIONS
CAUTION: Before servicing receivers covered by this service 2. After removing an electrical assembly equipped with ES
manual and its supplements and addenda, read and follow the devices, place the assembly on a conductive surface such as
SAFETY PRECAUTIONS on page 3 of this publication. aluminum foil, to prevent electrostatic charge buildup or
NOTE: If unforeseen circumstances create conflict between the exposure of the assembly.
following servicing precautions and any of the safety precautions on 3. Use only a grounded-tip soldering iron to solder or unsolder ES
page 3 of this publication, always follow the safety precautions. devices.
Remember: Safety First. 4. Use only an anti-static type solder removal device. Some solder
removal devices not classified as "anti-static" can generate
General Servicing Precautions electrical charges sufficient to damage ES devices.
1. Always unplug the receiver AC power cord from the AC power 5. Do not use freon-propelled chemicals. These can generate
source before; electrical charges sufficient to damage ES devices.
a. Removing or reinstalling any component, circuit board 6. Do not remove a replacement ES device from its protective
module or any other receiver assembly. package until immediately before you are ready to install it.
b. Disconnecting or reconnecting any receiver electrical plug or (Most replacement ES devices are packaged with leads
other electrical connection. electrically shorted together by conductive foam, aluminum foil
c. Connecting a test substitute in parallel with an electrolytic or comparable conductive material).
capacitor in the receiver. 7. Immediately before removing the protective material from the
CAUTION: A wrong part substitution or incorrect polarity leads of a replacement ES device, touch the protective material
installation of electrolytic capacitors may result in an to the chassis or circuit assembly into which the device will be
explosion hazard. installed.
CAUTION: Be sure no power is applied to the chassis or circuit,
2. Test high voltage only by measuring it with an appropriate high and observe all other safety precautions.
voltage meter or other voltage measuring device (DVM, 8. Minimize bodily motions when handling unpackaged
FETVOM, etc) equipped with a suitable high voltage probe. replacement ES devices. (Otherwise harmless motion such as
Do not test high voltage by "drawing an arc". the brushing together of your clothes fabric or the lifting of your
3. Do not spray chemicals on or near this receiver or any of its foot from a carpeted floor can generate static electricity
assemblies. sufficient to damage an ES device.)
4. Unless specified otherwise in this service manual, clean
electrical contacts only by applying the following mixture to the General Soldering Guidelines
contacts with a pipe cleaner, cotton-tipped stick or comparable 1. Use a grounded-tip, low-wattage soldering iron and appropriate
non-abrasive applicator; 10 % (by volume) Acetone and 90 % tip size and shape that will maintain tip temperature within the
(by volume) isopropyl alcohol (90 % - 99 % strength) range or 500 °F to 600 °F.
CAUTION: This is a flammable mixture. 2. Use an appropriate gauge of RMA resin-core solder composed
Unless specified otherwise in this service manual, lubrication of of 60 parts tin/40 parts lead.
contacts in not required. 3. Keep the soldering iron tip clean and well tinned.
5. Do not defeat any plug/socket B+ voltage interlocks with which 4. Thoroughly clean the surfaces to be soldered. Use a mall wire-
receivers covered by this service manual might be equipped. bristle (0.5 inch, or 1.25 cm) brush with a metal handle.
6. Do not apply AC power to this instrument and/or any of its Do not use freon-propelled spray-on cleaners.
electrical assemblies unless all solid-state device heat sinks are 5. Use the following unsoldering technique
correctly installed. a. Allow the soldering iron tip to reach normal temperature.
7. Always connect the test receiver ground lead to the receiver (500 °F to 600 °F)
chassis ground before connecting the test receiver positive b. Heat the component lead until the solder melts.
lead. c. Quickly draw the melted solder with an anti-static, suction-
Always remove the test receiver ground lead last. type solder removal device or with solder braid.
8. Use with this receiver only the test fixtures specified in this CAUTION: Work quickly to avoid overheating the circuit
service manual. board printed foil.
CAUTION: Do not connect the test fixture ground strap to any 6. Use the following soldering technique.
heat sink in this receiver. a. Allow the soldering iron tip to reach a normal temperature
(500 °F to 600 °F)
Electrostatically Sensitive (ES) Devices b. First, hold the soldering iron tip and solder the strand against
Some semiconductor (solid-state) devices can be damaged easily the component lead until the solder melts.
by static electricity. Such components commonly are called c. Quickly move the soldering iron tip to the junction of the
Electrostatically Sensitive (ES) Devices. Examples of typical ES component lead and the printed circuit foil, and hold it there
devices are integrated circuits and some field-effect transistors and only until the solder flows onto and around both the
semiconductor "chip" components. The following techniques component lead and the foil.
should be used to help reduce the incidence of component CAUTION: Work quickly to avoid overheating the circuit
damage caused by static by static electricity. board printed foil.
1. Immediately before handling any semiconductor component or d. Closely inspect the solder area and remove any excess or
semiconductor-equipped assembly, drain off any electrostatic splashed solder with a small wire-bristle brush.
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.

Copyright © 2010 LG Electronics. Inc. All rights reserved. -4- LGE Internal Use Only
Only for training and service purposes
IC Remove/Replacement Circuit Board Foil Repair
Some chassis circuit boards have slotted holes (oblong) through Excessive heat applied to the copper foil of any printed circuit
which the IC leads are inserted and then bent flat against the board will weaken the adhesive that bonds the foil to the circuit
circuit foil. When holes are the slotted type, the following technique board causing the foil to separate from or "lift-off" the board. The
should be used to remove and replace the IC. When working with following guidelines and procedures should be followed whenever
boards using the familiar round hole, use the standard technique this condition is encountered.
as outlined in paragraphs 5 and 6 above.
At IC Connections
Removal To repair a defective copper pattern at IC connections use the
1. Desolder and straighten each IC lead in one operation by gently following procedure to install a jumper wire on the copper pattern
prying up on the lead with the soldering iron tip as the solder side of the circuit board. (Use this technique only on IC
melts. connections).
2. Draw away the melted solder with an anti-static suction-type
solder removal device (or with solder braid) before removing the 1. Carefully remove the damaged copper pattern with a sharp
IC. knife. (Remove only as much copper as absolutely necessary).
Replacement 2. carefully scratch away the solder resist and acrylic coating (if
1. Carefully insert the replacement IC in the circuit board. used) from the end of the remaining copper pattern.
2. Carefully bend each IC lead against the circuit foil pad and 3. Bend a small "U" in one end of a small gauge jumper wire and
solder it. carefully crimp it around the IC pin. Solder the IC connection.
3. Clean the soldered areas with a small wire-bristle brush. 4. Route the jumper wire along the path of the out-away copper
(It is not necessary to reapply acrylic coating to the areas). pattern and let it overlap the previously scraped end of the good
copper pattern. Solder the overlapped area and clip off any
"Small-Signal" Discrete Transistor excess jumper wire.
Removal/Replacement
1. Remove the defective transistor by clipping its leads as close as At Other Connections
possible to the component body. Use the following technique to repair the defective copper pattern
2. Bend into a "U" shape the end of each of three leads remaining at connections other than IC Pins. This technique involves the
on the circuit board. installation of a jumper wire on the component side of the circuit
3. Bend into a "U" shape the replacement transistor leads. board.
4. Connect the replacement transistor leads to the corresponding
leads extending from the circuit board and crimp the "U" with 1. Remove the defective copper pattern with a sharp knife.
long nose pliers to insure metal to metal contact then solder Remove at least 1/4 inch of copper, to ensure that a hazardous
each connection. condition will not exist if the jumper wire opens.
2. Trace along the copper pattern from both sides of the pattern
Power Output, Transistor Device break and locate the nearest component that is directly
Removal/Replacement connected to the affected copper pattern.
1. Heat and remove all solder from around the transistor leads. 3. Connect insulated 20-gauge jumper wire from the lead of the
2. Remove the heat sink mounting screw (if so equipped). nearest component on one side of the pattern break to the lead
3. Carefully remove the transistor from the heat sink of the circuit of the nearest component on the other side.
board. Carefully crimp and solder the connections.
4. Insert new transistor in the circuit board. CAUTION: Be sure the insulated jumper wire is dressed so the
5. Solder each transistor lead, and clip off excess lead. it does not touch components or sharp edges.
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.

Copyright © 2010 LG Electronics. Inc. All rights reserved. -5- LGE Internal Use Only
Only for training and service purposes
SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement.

1. Application range 3. Test method
This specification is applied to the LCD TV used LB01A 1) Performance: LGE TV test method followed
chassis. 2) Demanded other specification
- Safety: CE, IEC specification
2. Requirement for Test - EMC:CE, IEC
Each part is tested as below without special appointment.

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

4. Module General Specification
No. Item Specification Remark
1 Display Screen Device 55 cm(22 inch) wide color display module LCD
2 Aspect Ratio 16:9
3 LCD Module 55 cm(22 inch) TFT LCD HD LGD/ CMO
4 Storage Environment Temp. : -20 deg ~ 60 deg
Humidity : 10 % ~ 90 %
5 Operating Environment Temp. : -0 deg ~ 40 deg
Humidity : 0 % ~ 85 %
6 Input Voltage AC 100-240 V~ 50 / 60 Hz
7 Power Consumption Power on (Blue)
LGD 26.05 W LCD (Module) + Backlight(Lamp)
CMO 22.1 W
8 Pixel Pitch LGD 116.5 um x 349.5 um
CMO 116 um x 379 um

Copyright © 2010 LG Electronics. Inc. All rights reserved. -6- LGE Internal Use Only
Only for training and service purposes
5. Module optical specifications
(1) LGD Module
No. Item Specification Min. Typ. Max. Remark
1. Viewing Angle (CR > 10) Up/Down(Right/Left) 155(170) Degree
2. Luminance Luminance (cd/m2) 280 350
Variation - 1.3 MAX / MIN
3. Contrast Ratio CR 700 1000
4. CIE Color Coordinates White Wx 0.285
Wy 0.293
RED Rx 0.643
Ry Typ. 0.333 Typ.
Green Gx -0.03 0.295 +0.03
Gy 0.608
Blue Bx 0.1147
By 0.063

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 ºC ± 2 °C, VLCD = 12.0 V, fv = 60 Hz, Dclk = 74.25 MHz, VBR_A = 1.65 V, EXTVBR-B = 100 %

(2) CMO Module
No. Item Specification Min. Typ. Max. Remark
1. Viewing Angle (CR > 10) Up/Down(Right/Left) 140(150) Degree
2. Luminance Luminance (cd/m2) 280 350
Variation - 1.3 MAX / MIN
3. Contrast Ratio CR 750 1000
4. CIE Color Coordinates White Wx 0.285
Wy 0.293
RED Rx 0.644
Ry Typ. 0.331 Typ.
Green Gx -0.03 0.273 +0.03
Gy 0.588
Blue Bx 0.151
By 0.061

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 ºC ± 2 °C, VLCD = 12.0 V, fv = 60 Hz, Dclk = 74.25 MHz, VBR_A = 1.65 V, EXTVBR-B = 100 %

Copyright © 2010 LG Electronics. Inc. All rights reserved. -7- LGE Internal Use Only
Only for training and service purposes
6. Component Video Input (Y, CB/PB, CR/PR)
Specification
No. 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

7. RGB (PC)
Specification
No. 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 60 Hz, 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 63.981 60.02 108.875 SXGA FHD Model
8. 1920*1080 66.587 59.93 138.625 WUXGA FHD model

Copyright © 2010 LG Electronics. Inc. All rights reserved. -8- LGE Internal Use Only
Only for training and service purposes
8. HDMI Input
(1) DTV 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

(2) PC 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 63.981 60.02 108.875 SXGA HDCP/FHD model
8. 1920*1080 67.5 60.00 138.625 WUXGA HDCP/FHD model

Copyright © 2010 LG Electronics. Inc. All rights reserved. -9- LGE Internal Use Only
Only for training and service purposes
ADJUSTMENT INSTRUCTION
1. Application Range (2) (3)
This specification sheet is applied to all of the LCD TV with
LB01A 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 Please Check the Speed :
To use speed between
be changed only on agreeing. from 200KHz to 400KHz
2) Power Adjustment: Free Voltage
3) Magnetic Field Condition: Nil.
5) Click "Auto" tab and set as below
4) Input signal Unit: Product Specification Standard
6) Click "Run".
5) Reserve after operation: Above 5 Minutes (Heat Run)
7) After downloading, check "OK" message.
Temperature : at 25 ºC ± 5 ºC
Relative humidity : 65 % ± 10 % (4)
Input voltage : 220 V, 60 Hz
filexxx.bin
6) Adjustment equipments: Color Analyzer(CA-210 or CA-110), (5)
DDC Adjustment Jig equipment, Service remote control.
(7) ..........OK
7) Push the "IN STOP" key - For memory initialization.

Case1 : Software version up (6)

1. After downloading S/W by USB, TV set will reboot
automatically
2. Push "In-stop" key
3. Push "Power on" key * USB DOWNLOAD
4. Function inspection 1) Put the USB Stick to the USB socket
5. After function inspection, Push "In-stop" key. 2) Automatically detecting update file in USB Stick
Case2 : Function check at the assembly line - If your downloaded program version in USB Stick is Low,
1. When TV set is entering on the assembly line, Push it didn't work. But your downloaded version is High, USB
"In-stop" key at first. data is automatically detecting
2. Push "Power on" key for turning it on. 3) Show the message "Copying files from memory"
-> If you push "Power on" key, TV set will recover
channel information by itself.
3. After function inspection, Push "In-stop" key.

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.

(1)

fi lexxx.bin

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.

Copyright © 2010 LG Electronics. Inc. All rights reserved. - 10 - LGE Internal Use Only
Only for training and service purposes
4) Updating is staring. 3.1. ADC Process
(1) ADC
- Enter Service Mode by pushing "ADJ" key,
- Enter Internal ADC mode by pushing "G" key at "5. ADC
Calibration"

Using `power on' button of the Adjustment R/C,
power on TV.

* ADC Calibration Protocol (RS232)
No Item CMD1 CMD2 Data0
Enter Adjust Adjust A A 0 0 When transfer the `Mode In',
Mode `Mode In' Carry the command.
ADC adjust ADC Adjust A D 1 0 Automatically adjustment
(The use of a internal pattern)

Adjust Sequence
· aa 00 00 [Enter Adjust Mode]
· xb 00 40 [Component1 Input (480i)]
5) Uploading completed, The TV will restart automatically.
· ad 00 10 [Adjust 480i Comp1]
6) If your TV is turned on, check your updated version and
· xb 00 60 [RGB Input (1024*768)]
Tool option.(explain the Tool option, next stage)
· ad 00 10 [Adjust 1024*768 RGB]
* If downloading version is more high than your TV have,
· aa 00 90 End Adjust mode
TV can lost all channel data. In this case, you have to
* Required equipment : Adjustment R/C.
channel recover. if all channel data is cleared, you didn't
have a DTV/ATV test on production line.
3.2. Function Check
* After downloading, have to adjust Tool Option again. * Check display and sound
1) Push "IN-START" key in service remote control. - Check Input and Signal items. (cf. work instructions)
2) Select "Tool Option 1" and Push "OK" button. 1) TV
3) Punch in the number. (Each model has their number) 2) AV (SCART1/SCART2/ CVBS)
3) COMPONENT (480i)
Module Tool option1 Tool option2 Tool option3 Tool option4 Tool option5
4) RGB (PC : 1024 x 768 @ 60hz)
LGD 8192 522 3076 26892 3104 5) HDMI
CMO 8196 522 3076 26892 3104
6) PC Audio In
* Display and Sound check is executed by Remote control.

4) Completed selecting Tool option.

Copyright © 2010 LG Electronics. Inc. All rights reserved. - 11 - LGE Internal Use Only
Only for training and service purposes
4. Total Assembly line process
Color Temperature : COOL, Medium, Warm.
4.1. Adjustment Preparation One of R Gain/G Gain/ B Gain should be kept on 0xC0, and
· W/B Equipment condition adjust other two lower than C0.
CA210 : CH 9, Test signal : Inner pattern (85IRE) (when R/G/B Gain are all C0, it is the FULL Dynamic Range
· Above 5 minutes H/run in the inner pattern. ("power on" key of Module)
of adjust remote control)
Cool 9,300 K X=0.285(±0.002)
* Manual W/B process using adjusts Remote control.
· After enter Service Mode by pushing "ADJ" key,
Y=0.293(±0.002) · Enter White Balance by pushing " G " key at "6. White
Medium 8,000 K X=0.295(±0.002) Inner pattern Balance".
Y=0.305(±0.002) (216gray,85IRE)
Warm 6,500 K X=0.313(±0.002)
Y=0.329(±0.002)

* 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.

* After done all adjustments, Press "In-start" button and
Full White Pattern CA-210
compare Tool option and Area option value with its BOM, if
COLOR it is correctly same then unplug the AC cable. If it is not
ANALYZER
TYPE: CA-210 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
RS-232C Communication
inspection. And Mechanical Power Switch must be set
"ON".

* Auto-control interface and directions
1) Adjust in the place where the influx of light like floodlight
4.2. DDC EDID Write (RGB 128Byte )
around is blocked. (illumination is less than 10 lux). · Connect D-sub Signal Cable to D-sub Jack.
2) Adhere closely the Color Analyzer (CA210) to the module · Write EDID Data to EEPROM(24C02) by using DDC2B
less than 10 cm distance, keep it with the surface of the protocol.
Module and Color Analyzer's prove vertically.(80° ~ 100°). · Check whether written EDID data is correct or not.
3) Aging time * For SVC main Assembly, EDID have to be downloaded to
- After aging start, keep the power on (no suspension of Insert Process in advance.
power supply) and heat-run over 5 minutes.
- Using `no signal' or `full white pattern' or the others, 4.3. DDC EDID Write (HDMI 256Byte)
check the back light on. · Connect HDMI Signal Cable to HDMI Jack.
· Write EDID Data to EEPROM(24C02) by using DDC2B
· Auto adjustment Map(RS-232C) protocol.
RS-232C COMMAND · Check whether written EDID data is correct or not.
[CMD ID DATA] * For SVC main Assembly, EDID have to be downloaded to
Wb 00 00 White Balance Start Insert Process in advance.
Wb 00 ff White Balance End
RS-232C COMMAND MIN CENTER MAX 4.4. EDID DATA
1) All Data : HEXA Value
[CMD ID DATA] (DEFAULT)
2) Changeable Data :
Cool Mid Warm Cool Mid Warm *: Serial No : Controlled / Data:01
R Gain jg Ja jd 00 172 192 192 192 **: Month : Controlled / Data:00
***:Year : Controlled
G Gain jh Jb je 00 172 192 192 192 ****:Check sum
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

Copyright © 2010 LG Electronics. Inc. All rights reserved. - 12 - LGE Internal Use Only
Only for training and service purposes
4.5. Auto Download 1) HD RGB EDID data
1) Press Adj. key on the Adj. Remote control. 0 1 2 3 4 5 6 7 8 9 A B C D E F
2) Select EDID D/L menu. 00 00 FF FF FF FF FF FF 00 1E 6D a b
3) By pressing Enter key, EDID download will begin 10 c 01 03 68 73 41 78 0A CF 74 A3 57 4C B0 23
4) If Download is successful, OK is display, but If Download if 20 09 48 4C A1 08 00 81 C0 61 40 45 40 31 40 01 01

failure, NG is displayed. 30 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70

5) If Download is failure, Re-try downloads. 40 36 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 1F 46 10 00 0A 20 20 20 20 20 20 d
70 d 00 e
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

2) HD HDMI EDID data
0 1 2 3 4 5 6 7 8 9 A B C D E F
00 00 FF FF FF FF FF FF 00 1E 6D a b
10 c 01 03 80 73 41 78 0A CF 74 A3 57 4C B0 23
20 09 48 4C A1 08 00 81 C0 61 40 45 40 31 40 01 01
30 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
40 36 00 7E 8A 42 00 00 1E 01 1D 00 72 51 D0 1E 20
* Edid data and Model option download (RS232)
50 6E 28 55 00 7E 8A 42 00 00 1E 00 00 00 FD 00 3A
NO Item CMD1 CMD2 Data0
60 3E 1F 46 10 00 0A 20 20 20 20 20 20 d
Enter Download A A 0 0 When transfer the `Mode In', 70 d 01 e
download Mode `Mode In' Carry the command. 80 02 03 20 F1 4E 10 1F 84 13 05 14 03 02 12 20 21
EDID data Download A E 00 10 Automatically Download 90 22 15 01 26 15 07 50 09 57 07 f
A0 f 80 18 71 1C 16 20 58 2C 25 00 7E 8A 42 00
and Model (The use of a internal pattern)
B0 00 9E 01 1D 00 80 51 D0 0C 20 40 80 35 00 7E 8A
option download
C0 42 00 00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E 96 00
D0 7E 8A 42 00 00 18 02 3A 80 18 71 38 2D 40 58 2C
E0 45 00 7E 8A 42 00 00 1E 01 1D 80 D0 72 1C 16 20
- Manual Download F0 10 2C 25 80 7E 8A 42 00 00 9E 00 00 00 00 00 D5
* Caution
1) Use the proper signal cable for EDID Download * Detail EDID Options are below
- Analog EDID : Pin3 exists Product ID
- Digital EDID : Pin3 exists
2) Never connect HDMI & D-sub Cable at the same time. Model Name HEX EDID Table DDC Function
3) Use the proper cables below for EDID Writing HD Model 0000 00 00 Analog/Digital
4) Download HDMI1, HDMI2, separately because HDMI1 is
different from HDMI2
Serial No: Controlled on production line.
For Analog EDID For HDMI EDID
Month, Year: Controlled on production line:
D-sub to D-sub DVI-D to HDMI or HDMI to HDMI ex) Monthly : `02' -> `01'
Year : `2010' -> `14'
Model Name(Hex):
MODEL MODEL NAME(HEX)
all 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20

Checksum: Changeable by total EDID data.
Item Condition Data(Hex) Vendor Specific(HDMI)
Manufacturer ID GSM 1E6D INPUT MODEL NAME(HEX)
Version Digital : 1 01 HDMI1 65030C001000011D
Revision Digital : 3 03 HDMI2 65030C002000011D
HDMI3 65030C003000011D

Copyright © 2010 LG Electronics. Inc. All rights reserved. - 13 - LGE Internal Use Only
Only for training and service purposes
4.5. V-COM Adjust(Only LGD(M+S) Module) 5. Model name & Serial number D/L
- Why need Vcom adjustment? · Press "Power on" key of service remocon.
A The Vcom (Common Voltage) is a Reference Voltage of (Baud rate : 115200 bps)
Liquid Crystal Driving. · Connect RS232 Signal Cable to RS-232 Jack.
-> Liquid Crystal need for Polarity Change with every frame. · Write Serial number by use RS-232.
Circuit Block · Must check the serial number at the Diagnostics of SET UP
Data (R ,G,B ) & Ga mma menu. (Refer to below).
Cont rol si gnal Re f e r e nce V o ltage
Data (R ,G,B ) & C ont ro l s ignal
Ti m i n g
S Co nt r o ll e r
Gamm a Reference
In t e r f a ce

Cont rol si gnal Volta ge
Y Da t a I n p u t
So urce D r i v e I C
S
T Column Line
Pane l
Gat e Driv e IC

E Power r I n p u t
Po w e Input Po w e r V COM
Blo ck
M CLC CST
Liquid
Crys tal
V COM Row Li ne TFT

V COM
5.1. Signal TABLE
CMD LENGTH ADH ADL DATA_1 ... Data_n CS DELAY

- Adjust sequence CMD : A0h
· Press the PIP key of th ADJ remote control.(This PIP key is LENGTH : 85~94h (1~16 bytes)
hot key to enter the VCOM adjusting mode) ADH : EEPROM Sub Address high (00~1F)
(Or After enter Service Mode by pushing "ADJ" key, then ADL : EEPROM Sub Address low (00~FF)
Data : Write data
Enter V-Com Adjust mode by pushing "G" key at "10. V-
CS : CMD + LENGTH + ADH + ADL + Data_1 +...+ Data_n
Com"
Delay : 20ms
· As pushing the right or the left key on the remote control,
and find the V-COM value which is no or minimized the
Flicker. (If there is no flicker at default value, Press the exit 5.2. Command Set
key and finish the VCOM adjustment.) No. Adjust mode CMD(hex) LENGTH(hex) Description
· Push the "OK" key to store value. Then the message 1 n-bytes Write (n = 1~16)
EEPROM WRITE A0h 84h+n
"Saving OK" is pop.
· Press the exit key to finish VCOM adjustment.
* 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,.

(Visual Adjust and control the Voltage level) 5.3. Method & notice
A. Serial number D/L is using of scan equipment.
4.6. Outgoing condition Configuration B. Setting of scan equipment operated by Manufacturing
- When pressing IN-STOP key by SVC remocon, Red LED are Technology Group.
blinked alternatively. And then Automatically turn off. C. Serial number D/L must be conformed when it is produced
(Must not AC power OFF during blinking)