Step 5: Audio Signal
IC2301 (Pin 136)
BCK
LRCK
No
Ye s
c
IC2401 (Pins 63,76)
No
Ye s
d
IC2401 (Pins 61,78)
No
f
IC2301 (Pin 125)
g
h
IC2301 (Pin 135)
DATA
No
Ye s
Ye s
No
Ye s
e
To Step 6
Is there a
BCK output from
1st DSP
?
Is there a
BCK input to
2nd DSP
?
Is there a
LRCK output from
1st DSP
?
Is there a
LRCK input to
2nd DSP
?
Is there a
DATA output from
1st DSP
?
The 1st DSP Block is in failure.
Proceed to Step 7.
The 1st DSP Block is in failure.
Proceed to Step 7.
The 1st DSP Block is in failure.
Proceed to Step 7.
Check the parts and patterns
in the path.
Check the parts and patterns
in the path.
IC2401 (Pin 1)
No
Ye s
Is there a
DATA input to
2nd DSP
?
Check the parts and patterns
in the path.
Step 6: Audio Signal
IC2401 (Pin 77)
BCK
LRCK
No
Ye s
i
IC2403 (Pin 11)
No
Ye s
j
IC2403 (Pin 14)
No
l
IC2401 (Pin 7)
m
n
IC2401 (Pin 79)
DATA
No
Ye s
Ye s
No
Ye s
k
It is very difficult to diagnose
which part is in failure.
Is there a
BCK output from
2nd DSP
?
Is there a
BCK input to
SELECTOR
?
Is there a
LRCK output from
2nd DSP
?
Is there a
LRCK input to
SELECTOR
?
Is there a
DATA output from
2nd DSP
?
The 2nd DSP Block is in failure.
Proceed to Step 8.
The 2nd DSP Block is in failure.
Proceed to Step 8.
The 2nd DSP Block is in failure.
Proceed to Step 8.
Check the parts and patterns
in the path.
Check the parts and patterns
in the path.
IC2403 (Pin 5)
No
Ye s
Is there a
DATA input to
SELECTOR
?
Check the parts and patterns
in the path.
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