Y
N
Move to
No video/No audio
No video
Normal audio
Check Power Board to LED Back light Voltage
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
1/14
Error symptom
A. Video error
No video / Normal audio
☞
A4
☞
A1
☞
A2
☞
A6 & A3
First of all, Check whether all of cables between board is inserted properly or not.
(Main
B/D ↔ Power B/D, LVDS Cable, Speaker Cable, IR B/D Cable…)
Normal
Audio
On
Y
N
Normal
Voltage
Normal
Voltage
Y
N
Y
N
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Only for training and service purposes
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