Service manual

Defect Mode Failure Analysis Repair Testing
LED Off
Check PCB
Check Wire
No Power
Check PCB
Check Wire
Power wire connector
Cable change
OSD cable Change
PW cable Change
Next Step
※ “ Panel Change” Should be Performed to Level 3 Repair stage
Unavailable
Check PCB
Check Wire
LED Dark
LED Abnormal
LED Flicker
AD/B Change
AD/B Change
AD/B Change
P/B Change
P/B Change
P/B Change
CNT/B Change
OSD cable Change
OSD cable Change
ON/OF
Abnormal
LED display
abnormal
Abnormal
Keyboard
TEST
NG
Completed
41
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Do Not Copy VA712-1_VA712b-1