Service manual

Defect Mode Failure Analysis Repair Testing
AD/B Change
Panel Change
P/B Change
CNT/B Change
D-sub cable
change
Missing Line
Bright Dot
Dark Dot
Backlight
Check PCB
Check Panel
Light Leakage
Mura
Image Sticking
Brightness spot
Particle
Dot Defect
Check Panel
No display
Check PCB
Check Panel
Check Wire
Noise
Check PCB
Check Panel
Light On Test
Completed
Next Step
※ Panel Change” Should be Performed to Level 3 Repair stage
Panel Change
AD/B Change
Panel Change
AD/B Change
Panel Change
Abnormal
Display
TEST
N
A
6. Troubleshooting Flow Chart
39
ViewSonic Corporation Confidential
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Do Not Copy VA712-1_VA712b-1