LG M2250D Schematic

LED LCD TV

SERVICE MANUAL

CAUTION

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

CHASSIS : LD11D

MODEL : M2250D

M2250D-PHM

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

Internal Use Only

P/NO : MFL63642163(1112-REV00) Printed in Korea

CONTENTS

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

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

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

ADJUSTMENT INSTRUCTION .................................................................9

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

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

SCHEMATIC CIRCUIT DIAGRAM...............................................................

Only for training and service purposes

- 2 -

Only for training and service purposes

- 3 -

PRECAUTION

WARNING FOR THE SAFETY-RELATED COMPONENT.

• There are some special components used in LCD monitor that are important for safety.

These parts are

marked on the schematic diagram and the Exploded View It is essential that these critical parts

should be replaced with the manufacturer’s specified parts to prevent electric shock, fire or other hazard.

• Do not modify original design without obtaining written permission from manufacturer or you will void the original parts and labor guarantee.

TAKE CARE DURING HANDLING THE LCD MODULE WITH BACKLIGHT UNIT.

• Must mount the module using mounting holes arranged in four corners.

• Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen.

• Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to the panel.

• Protect the module from the ESD as it may damage the electronic circuit (C-MOS).

• Make certain that treatment person’s body are grounded through wrist band.

• Do not leave the module in high temperature and in areas of high humidity for a long time.

• The module not be exposed to the direct sunlight.

• Avoid contact with water as it may a short circuit within the module.

• If the surface of panel become dirty, please wipe it off with a soft material. (Cleaning with a dirty or rough cloth may damage the panel.)

WARNING

BE CAREFUL ELECTRIC SHOCK !

• If you want to replace with the new backlight (CCFL) or inverter circuit, must disconnect the AC adapter because high voltage appears at inverter circuit about 650Vrms.

• Handle with care wires or connectors of the inverter circuit. If the wires are pressed cause short and may burn or take fire.

Leakage Current Hot Check Circuit

CAUTION

Please use only a plastic screwdriver to protect yourself from shock hazard during service operation.

Ω

0.15uF

AC Volt-meter

Good Earth Ground such as WATER PIPE,

To Instrument's exposed METALLIC PARTS

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

*Base on Adjustment standard

1.5 Kohm/10W

CONDUIT etc.

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 re-connecting 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) is opropyl 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 500ºF to 600ºF.

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

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

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

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

(500ºF to 600ºF) 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

(500ºF to 600ºF)

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

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.

Only for training and service purposes

- 6 -

SPECIFICATION

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

4. Module Specification

M215HW03-V1

1. Application Range.

This spec sheet is applied to the 56 cm(22 inch) LED LCD TV used LD11D chassis.

2. Specification

Each part is tested as below without special appointment

2.1 Temperature : 25 °C ± 5 °C (77 °F ± 9 °F), CST : 40 °C ± 5° C

2.2 Relative Humidity : 65 % ±10 %

2.3 Power Voltage : Standard input voltage

(100 V - 240 V ~, 50 / 60 Hz)

• Standard Voltage of each products is marked by models

2.4 Specification and performance of each parts are followed

each drawing and specification by part number in accordance with BOM .

2.5 The receiver must be operated for about 5 minutes prior to

the adjustment.

3. Test method

3.1 Performance : LGE TV test method followed.

3.2 Demanded other specification Safety : CB

No Item Specification Unit Remark

1 Panel Size 546.86mm(22.53 inches)

2 Panel Type TN

3 Operating Mode Normally White

4 Backlight Unit White LED

5 Max Resolution 1920 x 1080

6 Pixel Pitch 0.248(H) x 0.248(V)

7 Interface LVDS 2Port

8 Color depth 16.7M (6bit+A FRC)

4.2. Optical Spec.

No. Item Specification Min. Typ. Max. Remark

1 Viewing Angle[CR>10] Right/Left 75/75 85/85 -

Up/Down 70/70 80/80

2 Luminance Luminance (cd/m2) 200 250 -

Variation(%) 75 %

3 Contrst Ratio CR 600 1000

4 Color Coordinates RED R

- 0.641 -

- 0.333 -

Green G

- 0.331 -

- 0.626 -

Blue B

- 0.155 -

- 0.047 -

White W

- 0.313 -

- 0.329 -

Only for training and service purposes

- 7 -

5. Component Video Input (Y, PB, PR)

No.

Specification

Remark

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

1. 720*480 15.73 59.94 13.500 SDTV, DVD 480I(525I)

2. 720*480 15.75 60.00 13.514 SDTV, DVD 480I(525I)

3. 720*576 15.625 50.00 13.500 SDTV, DVD 576I(625I) 50Hz

4. 720*480 31.47 59.94 27.000 SDTV 480P

5. 720*480 31.50 60.00 27.027 SDTV 480P

6. 720*576 31.25 50.00 27.000 SDTV 576P 50Hz

7. 1280*720 44.96 59.94 74.176 HDTV 720P

8. 1280*720 45.00 60.00 74.250 HDTV 720P

9. 1280*720 37.50 50.00 74.25 HDTV 720P 50Hz

10. 1920*1080 33.72 59.94 74.176 HDTV 1080I

11. 1920*1080 33.75 60.00 74.250 HDTV 1080I

12. 1920*1080 28.125 50.00 74.250 HDTV 1080I 50Hz,

13. 1920*1080 56.25 50 148.5 HDTV 1080P

14. 1920*1080 67.432 59.94 148.350 HDTV 1080P

15. 1920*1080 67.5 60.00 148.5 HDTV 1080P

6. RGB Input ( PC )

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

1 640*480 31.469 59.94 25.175

2 800*600 37.879 60.317 40.0

3 1024*768 48.363 60.0 65.0

4 1152*864 54.34 60.05 80

5 1280*960 60 60 108.0

6 1280*1024 63.981 60.02 108.0

7 1680*1050 64.674 59.883 119.0

8 1680*1050 65.290 59.954 146.25

9 1920*1080 67.5 60 148.5

- 8 -

Only for training and service purposes

7. HDMI Input

(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*720 45 60 74.25 HDCP

8. 1280*1024 63.981 60.02 108.875 SXGA HDCP/FHD model

9. 1920*1080 67.5 60 148.5 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

Only for training and service purposes

- 9 -

ADJUSTMENT INSTRUCTION

1. Application Range

This specification sheet is applied to all of the LCD/ LED LCD TV with LD11D0 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

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”

Case1 : Software version up

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

2. Push “In-stop” key

3. Push “Power on” key

4. Function inspection

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

Case2 : Function check at the assembly line

1. When TV set is entering on the assembly line, Push “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.

- 10 -

Only for training and service purposes

4) Updating is staring.

5) Uploading completed, The TV will restart automatically.

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

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

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

* After downloading, have to adjust Tool Option again.

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

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

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

4) Completed selecting Tool option.

3.1. ADC Process

(1) ADC

- Enter Service Mode by pushing “ADJ” key,

- Enter Internal ADC mode by pushing “

” key at “5. ADC

Calibration”

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

power on TV.

* 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

* 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.

Item CMD1 CMD2 Data0

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

Carry the command.

ADC Adjust A D 1 0 Automatically adjustment

(The use of a internal pattern)

EZ ADJUT

0. Tool Option1

1. Tool Option2

2. Tool Option3

3. Tool Option4

4. Country Group

5. ADC Calibration

6. White Balance

7. Test Pattern

8. EDID D/L

9. Sub B/C

10. V-Com

11. P-Gamma

ADC Calibration

ADC Comp 480i

ADC Comp 1080p

ADC RGB

Reset

Start

Module Tool option1 Tool option2 Tool option3 Tool option4 Tool option5

AUO 10024 8746 55337 26904 288

Only for training and service purposes

- 11 -

4. Total Assembly line process

4.1. Adjustment Preparation

· W/B Equipment condition

CA210 : CCFL/EEFL -> CH9, Test signal: Inner pattern(80IRE)

LED -> CH14, Test signal: Inner pattern(80IRE)

· Above 5 minutes H/run in the inner pattern. (“power on” key

of adjust remote control)

· Edge LED W/B Table is process of time (Only LGD Module)

CA210: CH14, Test signal : Inner pattern(80IRE)

* 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 10 cm 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 5 minutes.

- 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 “

” key at “6. White

Balance”.

* After you finished 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 Assembly, 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 Assembly, EDID have to be downloaded to

Insert Process in advance.

Cool 9,300 K X=0.285(±0.002)

Y=0.293(±0.002) <Test Signal>

Medium 8,000 K X=0.295(±0.002) Inner pattern

Y=0.305(±0.002) (204 gray, 80 IRE)

Warm 6,500 K 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

Aging Time Cool Medium Warm

GP2R (Min.) X Y X Y X Y

269 273 285 293 313 329

1 0-2 279 288 295 308 319 338

2 3-5 278 286 294 306 318 336

3 6-9 277 285 293 305 317 335

4 10-19 276 283 292 303 316 333

5 20-35 274 280 290 300 314 330

6 36-49 272 277 288 297 312 327

7 50-79 271 275 287 295 311 325

8 80-149 270 274 286 294 310 324

9 Over 150 269 273 285 293 309 323

EZ ADJUST

0. Tool Option1

1. Tool Option2

2. Tool Option3

3. Tool Option4

4. Country Group

5. ADC Calibration

6. White Balance

7. Test Pattern

8. EDID D/L

9. Sub B/C

10. V-Com

11. P-Gamma

White Balance

Color Temp.

R-Gain G-Gain B-Gain R-Cut G-Cut B-Cut Test-Pattern. Reset

Cool

172 172 192 64 64 64 ON

To set

- 12 -

Only for training and service purposes

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.

* Caution : Never connect HDMI & D-sub Cable when EDID

download

* 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) HD RGB EDID data

2) HD HDMI EDID data

* Detail EDID Options are below

ⓐ Product ID

ⓑ Serial No: Controlled on production line. ⓒ Month, Year: Week : ‘01’ -> ‘01’

Year : ‘2011’ -> ‘15’ fix

ⓓ Model Name(Hex):

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

EZ ADJUT

0. Tool Option1

1. Tool Option2

2. Tool Option3

3. Tool Option4

4. Country Group

5. ADC Calibration

6. White Balance

7. Test Pattern

8. EDID D/L

9. Sub B/C

10. V-Com

11. P-Gamma

EDID D/L

HDMI1 HDMI2 HDMI3 RGB

NG NG NG NG

Reset

Start

EDID D/L

Reset

Start

HDMI1 HDMI2 HDMI3 RGB

OK OK OK OK

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)

Item

Manufacturer ID

Version

Revision

Condition

GSM

Digital : 1

Digital : 3

Data(Hex)

1E6D

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

For HDMI EDID

For Analog EDID

012 3 4 5 67 8 9 A BCD EF

00 00 FF FF FF FF FF FF 00 1E 6D a b

10 c 010368 10 09780AEE91A3544C9926

20 0F 50 54 A1 08 00 81 C0 61 40 45 40 31 40 01 01

30 01 01 01 01 01 01 1B 21 50 A0 51 00 1E 30 48 88

40 35 00 A0 5A 00 00 00 1C 01 1D 00 72 51 D0 1E 20

50 6E 28 55 00 A0 5A 00 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

012 3 4 5 67 8 9 A BCD EF

00 00 FF FF FF FF FF FF 00 1E 6D a b

10 c 01038010 09780AEE91A3544C9926

20 0F 50 54 A1 08 00 81 C0 61 40 45 40 31 40 01 01

30 01 01 01 01 01 01 1B 21 50 A0 51 00 1E 30 48 88

40 35 00 A0 5A 00 00 00 1C 01 1D 00 72 51 D0 1E 20

50 6E 28 55 00 A0 5A 00 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 01 e

80 02 03 20 F1 4E 10 1F 84 13 05 14 03 02 12 20 21

90 22 15 01 26 15 07 50 09 57 07 f

A0 f 8018711C1620582C2500A05A0000

B0 00 9E 01 1D 00 80 51 D0 0C 20 40 80 35 00 A0 5A

C0 00 00 00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E 96 00

D0 A0 5A 00 00 00 18 02 3A 80 18 71 38 2D 40 58 2C

E0 45 00 A0 5A 00 00 00 1E 01 1D 80 D0 72 1C 16 20

F0 10 2C 25 80 A0 5A 00 00 00 9E 00 00 00 00 00 0e

Model Name HEX EDID Table DDC Function

HD Model 0000 00 00 Analog/Digital

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 65030C001000

HDMI2 65030C002000

HDMI3 65030C003000

- 13 -

Only for training and service purposes

4.5. V-COM Adjust(Only LGD(M+S) Module)

- Why need Vcom adjustment?

A The Vcom (Common Voltage) is a Reference Voltage of

Liquid Crystal Driving.

-> Liquid Crystal need for Polarity Change with every frame.

- Adjust sequence

· Press the PIP key of th ADJ remote control.(This PIP key is

hot key to enter the VCOM adjusting mode)

(Or After enter Service Mode by pushing “ADJ” key, then Enter V-Com Adjust mode by pushing “

G” key at “10. V-

Com”.)

· 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 key and finish the VCOM adjustment.)

· Push the “OK” key to store value. Then the message

“Saving OK” is pop.

· Press the exit key to finish VCOM adjustment.

(Visual Adjust and control the Voltage level)

4.6. 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)

4.7. Hi-pot Test

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.

CMD LENGTH ADH ADL DATA_1 . . . Data_n CS DELAY

Row Li ne

Column Li ne

CLC

CST

Pane l

Gat e Driv e IC

So urce D r iv e I C

Circuit Block

Tim i ng Cont r o lle r

Po w er Blo c k

COM

Gamma Ref er ence V oltage

Gamm a Re ference Volta ge

Data (R,G ,B) & C on tro l si gnal

Cont rol si gnal

Data (R,G,B ) & Cont rol si gnal

In t er fa ce

TFT

Po w er I n pu t

Power Input

Data Input

COM

Liquid Crys tal

COM

No. Adjust mode CMD(hex) LENGTH(hex) Description

1 EEPROM WRITE A0h 84h+n n-bytes Write(n=1~16)

Only for training and service purposes

- 14 -

* 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 controller.

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

3) Input the Factory model name(ex 42LD450-ZA) or Serial

number like photo.

4) Check the model name Instart menu -> Factory name displayed (ex 42LD450-ZA)

5) Check the Diagnostics (DTV country only) -> Buyer model

displayed (ex 42LD450)

6. CI+ Key Download method

(1) Download Procedure

1) Press "Power on" button of a service remote control. (Baud rate : 115200 bps)

2) Connect RS232-C Signal Cable.

3) Write CI+ Key through RS-232-C.

4) Check whether the key was downloaded or not at ‘In Start’ menu. (Refer to below).

=> Check the Download to CI+ Key value in LGset.

1. check the method of CI+ Key value a. check the method on Instart menu b. check the method of RS232C Command

1) into the main ass’y mode (RS232 : aa 00 00)

2) check the key download for transmitted command (RS232 : ci 00 10)

3) result value

- normally status for download : OKx

- abnormally status for download : NGx

2. Check the method of CI+ Key value (RS232)

1) into the main ass’y mode (RS232 : aa 00 00)

2) Check the method of CI+ key by command (RS232 : ci 00 20)

3) Result value

i 01 OK 1d1852d21c1ed5dcx

7. Local Dimming Function Check

Step1) Turn on TV. Step2) Press “P-only” key, entrance to power only mode and

Press “Exit” key Step3) Press “Tilt” key, entrance to Local Dimming mode. Step4) At the Local Dimming mode, module Edge Backlight

moving right to left Back light of module moving Step5) confirm the Local Dimming mode Step6) Press “Exit” key

CMD 1 CMD 2 Data 0

AA00

CMD 1 CMD 2 Data 0

CI10

CMD 1 CMD 2 Data 0

AA00

CMD 1 CMD 2 Data 0

CI20

CI+ key Value

Only for training and service purposes

- 15 -

BLOCK DIAGRAM

Only for training and service purposes

- 16 -

EXPLODED VIEW

300

200

120

511

540

900

530

500

501

521

520

400

910

800

510

535

LV1

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

APCPCWM_4828539:WP_GLOBAL_PFWP_GLOBAL_PF

LGE Internal Use Only

APCPCWM_4828539:WP_GLOBAL_PFWP_GLOBAL_PF

LGE Internal Use Only

APCPCWM_4828539:WP_GLOBAL_PFWP_GLOBAL_PF

LGE Internal Use Only

APCPCWM_4828539:WP_GLOBAL_PFWP_GLOBAL_PF

LGE Internal Use Only

APCPCWM_4828539:WP_GLOBAL_PFWP_GLOBAL_PF

+ 46 hidden pages