AOC 197Pk2 Service Manual page 34

19" LCD Color Monitor
9.2.3 Key Board
Is Key Pad Board connecting normally ?
OSD is unstable or not working
Y
Is Button Switch normally ?
Y
Is Key Pad Board normally ?
Y
Check Main Board
N
Connect Key Pad Board
N
Replace Button Switch
N
Replace Key Pad Board
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AOC 197Pk2