Normal
audio
Y
N
Move to No
video/No audio
No video
Normal audio
On
Y
N
Normal
voltage
Y
N
Replace T-con/Main
Board or module
And Adjust VCOM
Panel Vcc (12V) output (IC1100)
Normal
voltage
Y
N
End
Always check & record S/W Version and White
Balance value before replacing the Main Board
Replace Main Board
Re-enter White Balance value
※
Precaution
Established
date
Standard Repair Process
Revised date
1/16
Error
symptom
A. Video error
No video/ Normal audio
☞
A18
☞
A1
☞
A18
☞
A4 & A2
First of all, Check whether all of cables between board is inserted properly or not.
(Main B/D
↔ Power B/D, VX1 Cable, Speaker Cable, IR B/D Cable,,,)
1
Copyright
ⓒ
2016 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Summary of Contents for 40UH630V
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