Acer V277 Lifecycle Extension Manual page 16

5.2 key debug flow:
5.3 Panel debug flow (bmipx&bmix&bip):
Key Debug
Replace
keyboard
N
Key works?
Y
END
LCM power Debug
Disconnect LVDS cable
Check LCM power
(R82) 5V ok?
N
Check Q1 pin2 is 5V?
Y
N
Check Q2 pin2
is high?(＞2.4V)
Y
Replace Q1
Check U12 works
Y
N
N
Check U12 works
Replace panel
Check set is ok?
Y
END
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