Read LG 42LC4R / 42LC4RB (CHASSIS:LP78A) Service Manual online
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ADJUSTMENT INSTRUCTION
1. Application Range
This spec sheet is applied all of the 26/32/37/42” LCD
TV(LP78A) by manufacturing LG TV Plant all over the world.
TV(LP78A) 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.
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
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.
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 30 minutes at RF
no signal.
3. Adjustment items
3.1. PCB assembly adjustment items
1) Download the VCTP main software (IC500,VCT_Pro)
2) Channel memory (IC501,EEPROM)
3) Color carrier Adjustment
2) Channel memory (IC501,EEPROM)
3) Color carrier Adjustment
3.2. SET assembly adjustment items
1) DDC Data input.
2) Adjustment of White Balance.
3) Factoring Option Data input.
2) Adjustment of White Balance.
3) Factoring Option Data input.
4. PCB assembly adjustment method
(Using VCTP Download program)
4.1. Download program installation
(1) Extract a Zip file
(2) Visual I2C & LPT Driver Installation
LPT Port Driver (LptDrv) Setups : Program Files > Micronas >
Visual I2C > Port_Driver
*Use for Windows 95/98 : Setup_LptDrv_v0104_9x.exe
*Use for Windows 2000/XP : Setup_LptDrv_v0202_XP_2000.exe
*Use for Windows NT : Setup_LptDrv_v0104_NT.exe
*Use for Windows 2000/XP : Setup_LptDrv_v0202_XP_2000.exe
*Use for Windows NT : Setup_LptDrv_v0104_NT.exe
(3) Verification (Start > Programs > Micronas > Visual I2C or
LptDrv)
(4) LPT delay setting(File > Preference > LPT preferences)
(5) Exchange the bootloader.bat file.
Install the LPT Driver
Install the Visual I2C
Install the Visual I2C
*LPT SETTING
- Delay => 1
- Time out => 500 ms
- Time out => 500 ms
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