Abnormal Display; Troubleshooting Flow Chart - ViewSonic VA712b-1 Service Manual

6. Troubleshooting Flow Chart

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