Pioneer SX-LX70SW Service Manual page 35

5
QQ
3 7 63 1515 0
F
IC101 M13 (R121(2))
Is there a
audio data (with SW
source)?
Yes
IC101 M14 (R121(3))
Is there a
audio data (with Cch
source)?
Yes
IC101 K14 (R118)
Is there a
audio data (with Sch
source)?
Yes
IC101 L14 (R121(4))
TE
L 13942296513
Is there a
audio data (with Sch
source)?
Yes
To Step 6
Step 6: Audio Clock (from 1st DSP to 2nd DSP)
IC291 (Pin 4)
Is there
a master clock
(24.576 MHz)?
Yes
IC291 (Pin 6)
Is there
a master clock
(24.576 MHz)?
www
Yes
IC201 (Pin 73)
.
5
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Check the following points when the source is
Multi ch.
DSDL1
Is there
No
No
abnormality at the
parts and patterns
in the path?
IC101 is defective,
Replace the Assy.
DSDR1
Is there
No
No
abnormality at the
parts and patterns
in the path?
IC101 is defective,
Replace the Assy.
DSDL2
Is there
No
No
abnormality at the
parts and patterns
in the path?
IC101 is defective,
Replace the Assy.
DSDR2
Is there
No
No
abnormality at the
parts and patterns
in the path?
IC101 is defective,
Replace the Assy.
MCLK
Is there
No
No
abnormality at the
parts and patterns
in the path?
Replace IC291.
MCK2
Is there
No
No
abnormality at the
parts and patterns
in the path?
Replace IC291
or IC201.
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6
8
Is there
a master clock
(24.576 MHz)?
Yes
IC101 J14 (R117)
Is there
a LR clock
?
Yes
IC201 (Pins 60,78)
Is there
a LR clock
?
Yes
IC101 H14 (R115)
Is there
a bit clock
?
Q Q
3 6 7 1 3
Yes
IC201 (Pins 62,76)
Is there
a bit clock
?
Yes
IC101 P10 (R126(4))
Is there
a audio data
?
Yes
IC201 (Pin 1)
Is there
a audio data
?
Yes
G
u163
.
SX-LX70SW
6
7
2 9 9 4 2 8
Is there
No
abnormality at the
parts and patterns
in the path?
LCK2
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?
BCK2
Is there
No
abnormality at the
parts and patterns
in the path?
1 5 0 5 8 2 9 9 4
Failure in 1st DSP block,
Go to Step 8.
Is there
No
abnormality at the
parts and patterns
in the path?
DT0O
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?
m
co
7
8
9 9
A
No
Replace IC201.
No
B
No
Replace IC201.
C
No
2 8 9 9
No
Replace IC201.
D
No
E
No
Replace IC201.
F
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