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Abnormal
phenomenon
17．Display
double split screen
18．Screen display
line and vertical
strip
19．Screen edge
dark area
20．No touch
21．Touch failure
in large screen area
Cause analysis
2. IWB mainboard card is defective 2. Replace the new machine
1. Incorrect screen parameters
2. IWB mainboard card is defective 2. Replace the new machine
1. COF electrostatic breakdown
2. The cable is not plugged in
properly
3. Screen failure
1. dead light, screen problem
1. The infrared screen PCB touch
mainboard is broken
2. Android firmware program error 2. Reinstall the touch driver
3. Touch program lost
1. Poor contact of PCB connecting
line of infrared screen
Terms of settlement
1. Re -upgrade the software
1. Replace the new machine
1. Replace the new machine
1. Download Android update
firmware and brush Android
system again
3. Replace the new machine
1. Re-install the touch driver
8
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