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3.Audio Trouble
3.1 No Audio
N
N
Y
Check the
peripheral
audio
Reset
Check
devices
the
speaker
All manuals and user guides at all-guides.com
No Audio
Check audio signal input
Y
Check the set of volume, mute
N
N
Check U25/SM5964
Check
And U25 I/0 interface
U3 or
(PIN6,12)
E45/100
Y
Check signal from C11
U3/TPA1517NE PIN7
Y
Check power U3 8th
Y
Check U3 PIN1 and PIN9 for signal input
Y
Check U3 PIN4 and PIN6 for
signal output
N
Y
Check
input
input
AV:U21 PIN49,50
PC下 U21PIN53 54
Examine
and
Y
repair
the
output
net
Check
between
U3
U21
and CN11
N
11.2V?
N
N
Chekc U21PIN60,61for signal output
Y
audio
Check
Check net
power
between
supply
N
U21
for U3
Check the
PIN60,61
net
And U3
between
PIN1,9
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