Service manual
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Acer Manuals
LCD TV
AT2231
31
32
33
34
35
36
37
38
39
40
32
K
e
y
B
o
a
r
d
OSD is unstable or not workin
g
Is Key Pad Board connecting normally?
Connect Ke
y
Pad Board
Is Button Switch normally?
Re
p
lace Button Switch
Y
N
N
Is Key Pad Board Normally?
Re
p
lace Ke
y
Pad Board
Y
N
Y
Check Main Board
1
...
...
30
31
32
33
34
...
...
60
