AOC 712SI - Keypad Board Troubleshooting

17” LCD Color Monitor AOC 712Si
35
8.2.2 Keypad Board
OSD is unstable or not working
Is Key Pad Board connecting normally?
Connect Key Pad Board
Is Button Switch normally?
Replace Button Switch
Y
N
N
Is Key Pad Board normally?
Replace Key Pad Board
Y
N
Y
Check Panel