Acer AT4230B Service Manual - Page 44
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AV1/S-V no Sound
AV1/S-video/R-L
Cable plug in?
Earphone remove
AV1/S-video source
AV1/S-video source
38
N
Mute turn off
Volume =30
Can display?
Can display?
no
Check video and R-L cable
Or replace video or R-L cable
no
Check video and R-L cable
Or replace video or R-L cable
no
Replace IO/B
AV1/S-video
Sound normal?
END
no
Replace M/B
Capter3