Key Pad Board - Envision EN7220 Service Manual

8.2.3 Key Pad Board

OSD is unstable or not working
Is KeyPad Board connecting normally
Y
Is Button Switch normally ?
Y
Is KeyPad Board Normally ?
Y
Check Main Board
N
?
N
N
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EN7220 Service Manual
Connect KeyPad
B d
Replace Button
Switch
Replace KeyPad
Board