LG Electronics LD84A service manual ADC Process, Function Check, Calibration Component, Hdmi

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*After downloading, have to adjust TOOL OPTION again.

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

2)Select "Tool Option 1" and Punch in the number.(Each model has their number.)

32LG5000-ZA : 8977

3)Completed selecting Tool option

Impress Resolution 1080i

Model : 223 in Pattern Generator(1080i Mode)

Pattern: 65 in Pattern Generator(MSPG-925 series)

3.1.ADC Process

(1)PC input ADC

1)Auto RGB Gain/Offset Adjustment

-Convert to PC in Input-source

-Signal equipment displays Output Voltage : 700 mVp-p

Impress Resolution XGA (1024 x 768 @ 60Hz) Model : 60 in Pattern Generator

Pattern : 65 in Pattern Generator (MSPG-925 Series)

<Fig. 1> Adjustment pattern(PC)

-Adjust by commanding AUTO_COLOR_ADJUST.

2)Confirmation

-We confirm whether “0xAA (RGB)” address of EEPROM “0xA2” is “0xAA” or not.

-If “0xAA (RGB)” address of EEPROM “0xA2” isn’t “0xAA”, we adjust once more

-We can confirm the ADC values from “0xA4~0XA9 (RGB)” addresses in a page “0xA2”

*Manual ADC process using Service Remocon. After enter Service Mode by pushing “ADJ” key,

execute “ADC Adjust” by pushing “G” key at “ADC CALIBRATION: RGB-PC”.

<Fig. 1> Adjustment pattern(COMPONENT)

-Adjust by commanding AUTO_COLOR_ADJUST.

2)Confirmation

-We confirm whether “0xB3 (480i)/0xBC (1080i)” address of EEPROM “0xA2” is “0xAA” or not.

-If “0xB3 (480i)/0xBC(1080i)” address of EEPROM “0xA2” isn’t “0xAA”, we adjust once more.

-We can confirm the ADC values from “0xAD~0XB2 (480i)/0XB6~BB (1080i)” addresses in a page “0xA2”.

*Manual ADC process using Service Remocon. After enter Service Mode by pushing “ADJ” key, execute “ADC Adjust” by pushing “G ” key at “ADC

CALIBRATION :COMPONENT”.

Impress Resolution 480i

Impress Resolution 1080i

(2)COMPONENT input ADC

1)Component Gain/Offset Adjustment

-Convert to Component in Input-source

-Signal equipment displays Impress Resolution 480i

MODEL : 209 in Pattern Generator(480i Mode)

Pattern : 65 in Pattern Generator (MSPG-925 series)

3.2.Function Check

(1)Check display and sound

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

1)TV

2)AV (SCART1/SCART2/S-VHS/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.

Copyright © 2008 LG Electronics. Inc. All right reserved.

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Only for training and service purposes

 

 

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Contents LCD TV Contents Important Safety Notice Safety PrecautionsElectrostatically Sensitive ES Devices Servicing PrecautionsIC Remove/Replacement Requirement for Test SpecificationModule general specification Application rangeModel general specification Component Video Input Y, PB, PR RGB PC Input ModeHdtv 720P SdtvSdtv 480P Sdtv 576PMain PCB check process Adjustment InstructionDesignation AV SCART1/SCART2/S-VHS/CVBS ADC ProcessFunction Check Calibration ComponentTotal Assembly line process Internal pressure Setting Scaler MstarOutgoing condition Configuration Check process TroubleshootingNo Power SymptomNo Raster Unusual display from DTV mode Unusual display from TV/CATV modeCvbs Input RGB Input Unusual display from AV1/AV2SCART modeUnusual display from AV3SIDE AV mode Unusual display from Component modeUnusual display from Hdmi 1/2/3 mode Unusual display from RGB modeNo Sound Block DiagramMemo Exploded View Page Page Page Feb