Acer V193

- 60 -
6 Audio Function:
Was Audio Input
plugged?
Yes
Return Power
Function Step.
No Yes
Was Audio V
DD
existed?
Audio do not work
No
Check VOL_ON
Yes
Check VOL_ADJ
Plug Audio input.
No
Check MCU send
VOL_ON control
signal or not.
No
Adjust volume
control switch to
normal.
Yes
Was CN551
plugged?
NoPlug CN551
Yes
Was Speaker
plugged?
NoPlug Speaker.
Yes
Replace IC551.