BenQ M2400HD - 24" LCD Monitor Service Manual page 52

24" LCD Color Monitor BenQ E2400HD
Keypad 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
Is Key Pad Board normally?
Replace Key Pad Board
Y
Check Main Board
52