LG 26LG30R-MA, 32LG30R, 32LG33R, 32LG34R, 32LG30RA Service Manual

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LCD TV

SERVICE MANUAL

CAUTION

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

CHASSIS : LP81A

MODEL : 26LG30R 26LG30R-MA

website:http://biz.LGservice.com

Internal Use Only

Only for training and service purposes

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1. Application range

This specification is applied to LP81A chassis.

2. Requirement for Test

Each part is tested as below without special appointment.

(1) Temperature : 25 ± 5°C(77 ± 9°F), CST : 40 ± 5°C (2) Humidity : 65% ± 10% (3) Power : Standard input voltage (100-240V~, 50/60Hz)

* Standard Voltage of each products is marked by models.

(4) Specification and performance of each parts are followed

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

(5) The receiver must be operated for about 20 minutes prior

to the adjustment.

3. Test method

(1) Performance : LGE TV test method followed (2) Demanded other specification

Safety : CE, IEC Specification EMC : CE, IEC

SPECIFICATION

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

4. General Specification(LCD Module)

Item Specification Measurement Result Remark

Display Screen Device 26” wide Color Display Module Resolution:1366X768(HD)

32” wide Color Display Module Resolution:1366X768(HD) Aspect Ratio 16:9 LCD Module 26” TFT WXGA LCD 26” HD MAKER :CMO

32” TFT WXGA LCD 32” HD MAKER :LPL CPT, CMO, AUO, SHARP Operating Environment 1) Temp. : 0 ~ 40 deg LGE SPEC

2) Humidity : 0 ~ 85%

Storage Environment 1) Temp. : -20 ~ 60 deg

2) Humidity : 0 ~ 85 % Input Voltage 100-240V~, 50/60Hz Power Consumption Power on (Blue) : LG30/LG50 Volume: 1/8 volume of sound distortion point

Power on (White) : LG60 ≤ TBD 26” HD ≤ TBD 32” HD St-By (Red) ≤ 1.0 W (All) LG60:St-by Light condition

LCD Module Maker Inch (H) x (V) x (D) unit Remark (Maker : AUO, CMO, CMO(HD) Outline Dimension 26” 626 x 373 x 43.7 mm [with inverter] CPT, LPL, SHARP) Pixel Pitch 26” 0.1405 x 0.4215 mm

Back Light 26” 12 CCFL mm Outline Dimension 32” 760 x 450 x 47.4 mm [with inverter] Pixel Pitch 32” 0.17025 x 0.51075 mm Back Light 32” 16 CCFL mm

LPL(HD) Outline Dimension 32” 760 x 450 x 48 mm [with inverter]

Pixel Pitch 32” 0.17025 x 0.51075 mm

Back Light 32” 12 EEFL mm Display Colors Coating 3H, AG/ 2H, AG LPL, CMO, AUO / Sharp

Only for training and service purposes

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5. Model Specification

Remark

Rear 1EA, Side 1EA

Rear

Side (S-Video Priority)

Rear

LG30 Tool, 32LG60

LG50, LG70 Tool

L/R Input

Side(1EA)-LG30 Tool only (LG50, LG60, LG70 not Support)

Side(1EA) - LG60, LG70 Tool Only (LG30, LG50 Not Support)

Specification

Central and South America

PAL SECAM B/G/D/K, PAL I/II, NTSC-M

BAND NTSC

VHF 2~13

UHF 14~69

CATV 1~125

Upper Heterodyne

NTSC, PAL-M/N

Y/Cb/Cr, Y/ Pb/Pr

RGB-PC, S/W Upgrade

HDMI-DTV, Only PCM MODE

PC Audio, Component (2EA), AV (2EA)

Remote control, Commercial

Divx, MP3, JPEG

Item

Market

Broadcasting system

Available Channel

Receiving system

Video Input (2EA)

AV Output (1EA)

S-Video Input (1EA)

Component Input (2EA)

RGB Input (1EA)

HDMI Input 2EA

3EA

Audio Input (5EA)

RS-232C

USB Input

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

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

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

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

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

720*480 31.47 59.94 27.000 SDTV 480P

720*480 31.50 60.00 27.027 SDTV 480P

720*576 31.25 50.00 27.000 SDTV 576P 50Hz

1280*720 44.96 59.94 74.176 HDTV 720P

1280*720 45.00 60.00 74.250 HDTV 720P

1280*720 37.50 50.00 74.25 HDTV 720P 50Hz

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

1920*1080 33.72 59.94 74.176 HDTV 1080I

1920*1080 33.75 60.00 74.25 HDTV 1080I

1920*1080 56.25 50 148.5 HDTV 1080P

1920*1080 67.432 59.94 148.350 HDTV 1080P

1920*1080 67.5 60.00 148.5 HDTV 1080P

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

640*350 31.468 70.80 25.17 EGA

720*400 31.469 70.08 28.32 DOS

640*480 31.469 59.94 25.17 VESA(VGA)

800*600 37.879 60.31 40 VESA(SVGA)

1024*768 48.363 60 65 VESA(XGA)

1280*768 47.776 59.87 79.5 VESA(WXGA)

1360*768 47.72 59.799 84.75 VESA(WXGA)

1366*768 47.7 60 84.62 VESA(WXGA)

1280*1024 63.668 59.895 109.00 SXGA Only FHD

1400*1050 65.317 59.978 121.75 SXGA Only FHD

1600*1200 74.537 59.869 161.00 UXGA Only FHD

1920*1080 66.587 59.934 138.50 WUXGA(Reduced Blanking) Only FHD

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

720_400 31.468 70.08 28.32

640_480 31.469 59.94 25.17 VESA(VGA)

800_600 37.879 60.31 40.00 VESA(SVGA)

1024_768 48.363 60.00 65.00 VESA(XGA)

1280_768 47.776 59.87 79.5 VESA(WXGA)

1360_768 47.72 59.799 84.62 VESA(WXGA)

1366_768 47.7 60 84.62 VESA(WXGA)

1280_1024 63.595 60.0 108.875 SXGA Only FHD

1400_1050 65.160 60.0 122.50 SXGA Only FHD

1600_1200 74.077 60.0 130.375 UXGA Only FHD

1920_1080 66.647 59.988 138.625 WUXGA Only FHD

Only for training and service purposes

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8. HDMI input (PC)

- Spec. out but display correctly at only HDMI/DVI IN 1 via DVI to HDMI Cable

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

720*480 31.47 59.94 27 SDTV 480P Support(not spec)

720*480 31.5 60 27.027 SDTV 480P support(not spec)

720*576 31.25 50 27 SDTV 576P support(not spec)

1280*720 44.96 59.94 74.176 HDTV 720P

1280*720 45 60 74.25 HDTV 720P

1280*720 37.5 50 74.25 HDTV 720P

1920*1080 28.125 50 74.25 HDTV 1080I

1920*1080 33.72 59.94 74.176 HDTV 1080I

1920*1080 33.75 60 74.25 HDTV 1080I

1920*1080 56.25 50 148.5 HDTV 1080P

1920*1080 67.432 59.94 148.350 HDTV 1080P

1920*1080 67.5 60.00 148.5 HDTV 1080P

1920*1080 27 24 74.25 HDTV 1080P

1920*1080 33.75 30 74.25 HDTV 1080P

9. HDMI input (DTV)

7. RGB Input (Analog PC)

Only for training and service purposes

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ADJUSTMENT INSTRUCTION

1. Application Range

This spec. sheet is applied all of the 32/37/42/47/52” LCD TV, LP81A chassis (HURRICANE 5) by manufacturing LG TV Plant all over the world.

2. Specification

1) Because this is not a hot chassis, it is not necessary to use an isolation transformer. However, the use of isolation transformer will help protect test instrument.

2) Adjustment must be done in the correct order.

3) The adjustment must be performed in the circumstance of 25±5°C of temperature and 65±10% of relative humidity if there is no specific designation.

4) The input voltage of the receiver must keep 100-220V, 50/60Hz.

5) Before adjustment, execute Heat-Run for 15 minutes at RF no signal.

3. S/W program download

3-1. Preliminary steps

(1) Download method 1 (PCB Assy)

- HD

- FHD

(2) Connect the download jig to D-sub jack

3-2. Download steps

(1) Execute ‘ISP Tool’ program in PC, then a main window will

be opened

(2) Click the connect button and confirm “Dialog Box”.

(3) Click the Config button and Change speed

E2PROM Device setting : over the 350Khz

(4) Read and write bin file

Click “(1)Read” tab, and then load download file(XXXX.bin) by clicking “Read”.

(5).Click “Auto(2)” tab and set as below (6).click “Run(3)”. (7).After downloading, check “OK(4)” message.

Double click

(1)

fi lexx x.bi n

fi lexx x.bin

)

.......... OK

)

(2)

Only for training and service purposes

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## USB DOWNLOAD

1) Put the USB Stick to the USB socket

2) Automatically detecting update file in USB Stick

3) Select “Start” Button and press “ok” button Updating is staring.

4) Finishing the version updating, you have to put out USB

stick and “AC Power” off.

5) After putting “AC Power” on and check updated version

on your TV.

4. ADC Process

* Required Equipments

- Remote controller for adjustment

- MSPG-925F Pattern Generator

4-1. Method of Auto RGB Color Balance

- Convert to RGB PC in Input-source

- Input the PC 1024x768 @ 60Hz 1/2 Black & White Pattern(MSPG-925F model:60, pattern:54) into RGB.

- Adjust by commanding AUTO_COLOR_ADJUST(0xF1) 0x00 0x02 instruction.

(1) Confirmation

- We confirm whether “0xF1 (offset), 0xF2 (gain)” address of EEPROM “0xBC” is “0xAA” or not.

- If “0xF1”, “0xF2” address of EEPROM “0xBC” isn’t “0xAA”, we adjust once more

- We can confirm the ADC values from “0x00~0x05” addresses in a page “0xBC”

* Manual ADC process using Service Remocon. After enter

Service Mode by pushing “ADJ” key, execute “Auto-RGB” by pushing “_” key at “Auto-RGB”.

4-2. Component input ADC

(1) Component Gain/Offset Adjustment7

- Convert to Component in Input-source

- Input the Component ( Which has 720p@60Hz YPbPr signal : 100% Color Bar (MSPG-925F Model: 217/ Pattern: 65 ) into Component.

- Adjust by commanding AUTO_COLOR_ADJUST (0xF1) 0x00 0x02 instruction

(2) Confirmation

- We confirm whether “0xF3 (offset), 0xF4 (gain)” address of EEPROM “0xBC” is “0xAA” or not.

- If “0xF3”, “0xF4” address of EEPROM “0xBC” isn’t “0xAA”, we adjust once more.

- We can confirm the ADC values from “0x06~0x0B” addresses in a page “0xBC”.

* Manual ADC process using Service Remocon. After

enter Service Mode by pushing “ADJ” key, execute “Auto-RGB” by pushing “_” key at “Auto-RGB”.

** TOOL Option, Area Option change and AC off Before PCBA check, you have to change the Tool option, Area option and have to AC off/on (Plug out and in) (If missing this process, set can operate abnormally)

5. TOOL Option, Area Option change

(1) Profile : Must be changed the option value because being

different with some setting value depend on module maker,

inch and market. (2) Equipment : adjustment remote control. (3) Adjustment method

The input methods are same as other chassis.(Use INSTART Key on the Adjust Remocon.) (If not changed the option, the input menu can differ the model spec.) * Refer to Job Expression of each main chassis ass’y (EBTxxxxxxxx) for Option value

* Never push the IN-STOP KEY after completing the function

inspection.

+ 13 hidden pages

LG 26LG30R-MA, 32LG30R, 32LG33R, 32LG34R, 32LG30RA Service Manual

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Frequently Asked Questions

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