Pioneer SX-LX70SW Service Manual page 35

5
F
Check the following points when the source is
Multi ch.
IC101 M13 (R121(2)) DSDL1
Is there a
No
abnormality at the
audio data (with SW
parts and patterns
source)?
Yes
IC101 M14 (R121(3)) DSDR1
Is there a
No
abnormality at the
audio data (with Cch
parts and patterns
source)?
Yes
IC101 K14 (R118) DSDL2
Is there a
No
abnormality at the
audio data (with Sch
parts and patterns
source)?
Yes
IC101 L14 (R121(4)) DSDR2
Is there a
No
abnormality at the
audio data (with Sch
parts and patterns
source)?
Yes
To Step 6
Step 6: Audio Clock (from 1st DSP to 2nd DSP)
IC291 (Pin 4) MCLK
Is there
No
abnormality at the
a master clock
parts and patterns
(24.576 MHz)?
Yes
IC291 (Pin 6) MCK2
Is there
No
abnormality at the
a master clock
parts and patterns
(24.576 MHz)?
Yes
IC201 (Pin 73)
5
6
Is there
No
in the path?
IC101 is defective,
Replace the Assy.
Is there
No
in the path?
IC101 is defective,
Replace the Assy.
Is there
No
in the path?
IC101 is defective,
Replace the Assy.
Is there
No
in the path?
IC101 is defective,
Replace the Assy.
Is there
No
in the path?
Replace IC291.
Is there
No
in the path?
Replace IC291
or IC201.
6
7
Is there
No
a master clock
(24.576 MHz)?
Yes
IC101 J14 (R117)
LCK2
Is there
No
a LR clock
?
Yes
IC201 (Pins 60,78)
Is there
No
a LR clock
?
Yes
IC101 H14 (R115) BCK2
Is there
No
a bit clock
?
Yes
IC201 (Pins 62,76)
Is there
No
a bit clock
?
Yes
IC101 P10 (R126(4))
DT0O
Is there No
a audio data
?
Yes
IC201 (Pin 1)
Is there No
a audio data
?
Yes
G
SX-LX70SW
7
8
Is there
No
abnormality at the
parts and patterns
in the path?
Replace IC201.
Is there
No
abnormality at the
parts and patterns
in the path?
Failure in 1st DSP block,
Go to Step 8.
Is there
No
abnormality at the
parts and patterns
in the path?
Replace IC201.
Is there
No
abnormality at the
parts and patterns
in the path?
Failure in 1st DSP block,
Go to Step 8.
Is there
No
abnormality at the
parts and patterns
in the path?
Replace IC201.
Is there
No
abnormality at the
parts and patterns
in the path?
Failure in 1st DSP block,
Go to Step 8.
Is there
No
abnormality at the
parts and patterns
in the path?
Replace IC201.
8
A
B
C
D
E
F
35