2T-C45AE1X
6 – 5
No audio heard (2)
No external audio heard
Is there the L-ch audio signal input from pin (6) of input terminal
J502 to pin (46 ) of IC3301?
Is there the R-ch audio signal input from pin (3) of input terminal
J502 to pin (47) of IC3301?
YES
Is there the I2S signal output at pin ( 72,159,160,161 ) of IC3301 ?
Check IC3301 and its peripheral circuits.
YES
O
N
?
2
0
7
1
C
I
f
o
5,6,7,8 )
(
n
i
p
t
a
t
u
p
n
i
l
a
n
g
i
s
e
r
e
h
t
s
I
Check connection between IC3301 and IC1702 and its periph-
eral circuits.
YES
Is the L-ch audio signal output at pin(26), (27) ,(30),(31) of
IC1702 normal ?
NO
Check IC1702 and its peripheral circuits.
Is the R-ch audio signal output at pin(10), (11),(14),(15) of
IC1702 normal ?
YES
Are the audio signal L-ch and R-ch output at (3)/(4) and (1)/(2) of
P1701 normal?
NO
Check circuit between IC1702 & P1701.
YES
Check speakers and their peripheral circuits.
< INPUT 3 >
NO
I
2
S
Содержание 2T-C45AE1X
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