Audio
trouble
MANI
BOARD
FAULT
JUDGMENT
12
No
audio
Check
the
audio
source
Turn
large
the
vol um e
Che ck
the
spe aker
The
aud io
inp ut
is
ok
Volume
is
turn
to
0
Voice
is
muted
Cn26
wi th
aud io
si gna l
Turn
off
mute
modle
N
Y
N
Y
N
Y
N
N
Check
the
circuit
o f
S T BY
\
M UT E
Rep air
the
pow er
supp ly
ci rcu it
of
U1
PIN8
of
U19
(
TDA1517
)
i s
h i g h
l e v e l
Check
the
power
o f
a m p l e
Check
the
input
signal
of
U19
(
TDA1517
)
PIN 1
/
PIN 9
Che ck
the
ci rcu it
of
aud io
inp ut
Check
the
power
and
circuit
aroundU16
(
SC7314S
)
N
Y
N
Y
N
OK
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