Acer VG272 - User Controls; External controls

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5.2 key debug flow:
5.3 Panel debug flow:
Key Debug
Replace
keyboard
Check U5 works
END
N
Y
Key works?
Disconnect edp cable
Replace panel
Check set is ok?
Check U5 works
N
Y
Check LCM power
(R43)is 10V?
Check U7 pin2 is 19V?
Y
N
N
Check U7 pin7
is High?
LCM power Debug
Y
N
Y
Replace U7 ,set is ok?
END
Check DC power
N
Y