Lenovo L197 Wide Service Manual page 35

19" LCD Color Monitor Lenovo L197 Wide
8.2.3 Key Board
OSD is unstable or not working
N
Is Key Pad Board connecting normally? Connect Key Pad Board
Y
N
Replace Button Switch
Is Button Switch normally?
Y
N
Replace Key Pad Board
Is Key Pad Board normally?
Y
Check Main Board
35