Pioneer SX-LX70SW Service Manual page 38

1
A
I
IC701 (Pin 5)
Is there
No
a audio data
input?
Yes
(FDT)
IC701 (Pin 29)
B
Is there
No
a audio data
output?
Yes
IC751 (Pin 5)
Is there
No
a audio data
input?
C
Yes
IC751 (Pin 29) LSFD
Is there
No
a audio data
output?
Yes
IC3101 (Pin 31)
D
Is there
No
a audio data
input?
Yes
E
F
38
1
2
Is there
No
abnormality at the
parts and patterns
in the input path?
Replace IC701.
Is there
No
abnormality at the
parts and patterns
in the output path?
Replace IC701
or IC751.
Is there
No
abnormality at the
parts and patterns
in the input path?
Replace IC701
or IC751.
Is there
No
abnormality at the
parts and patterns
in the output path?
Replace IC751
or IC3101.
Is there
No
abnormality at the
parts and patterns
in the input path?
Replace IC751
or IC3101.
SX-LX70SW
2
3
Check the following points when the source is
Multi ch.
IC201 (Pin 6) SDTO
Is there
No
abnormality at the
a audio data
parts and patterns
(with SLch source)?
in the path?
Yes
IC701 (Pin 8)
Is there
No
abnormality at the
a audio data
parts and patterns
(with SLch source)?
in the path?
Yes
IC201 (Pin 5) CDTO
Is there
No
abnormality at the
a audio data
parts and patterns
(with Cch source)?
in the path?
Yes
IC701 (Pin 12)
Is there
No
abnormality at the
a audio data
parts and patterns
(with Cch source)?
in the path?
Yes
IC701 (Pin 28) (SDT)
Is there
No
abnormality at the
a audio data
parts and patterns
(with Sch source)?
in the path?
Yes
IC751 (Pin 8)
Is there
No
abnormality at the
a audio data
parts and patterns
(with Sch source)?
in the path?
Yes
IC701 (Pin 27) (CDT)
Is there
No
abnormality at the
a audio data
parts and patterns
(with Cch source)?
in the path?
Yes
J
3
4
Is there
No
Failure in 2nd DSP block,
Go to Step 9.
Is there
No
Replace IC701.
Is there
No
Failure in 2nd DSP block,
Go to Step 9.
Is there
No
Replace IC701.
Is there
No
Replace IC701
or IC751.
Is there
No
Replace IC701
or IC751.
Is there
No
Replace IC701
or IC751.
4