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START
Is the LCD Backlight OK?
Is the voltage of TP1 is upper .5V?
Yes
Check the soldering
Condition of CN400
Yes
Check the voltage atTP= .8V ?
Yes
Check the voltage at each pin of TP3
changeslow to high?
Yes
Does LCD Work Properly?
Yes
LCD working well !
LGE Internal Use Only
Replace LCD module
No
Re-solder LCD Module
No
Re-solder C400
No
Re-solder resister connected faulty
pin.(R495~499)
No
Replace LCD Module
Check the soldering
Condition of CN400
Re-download
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4. TROUBLE SHOOTING
Re-solder LCD
ModuleReplace
Only for training and service purposes
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