Asus VB191T Service Manual page 47

19" LCD Color Monitor ASUS VB191T&S
8.2.3 Key Board
OSD is unstable or not working
N
Connect Key Pad Board
Is Key Pad Board connecting normally?
Y
N
Replace Button Switch
Is Button Switch normally?
Y
N
Replace Key Pad Board
Is Key Pad Board normally?
Y
Check Main Board
47