Pioneer SX-LX70SW Service Manual page 31

5
C
IC301 (Pin 26)
DIRB
Is there
No
abnormality at the
a bit clock
parts and patterns
output?
in the output path?
Yes
IC651 (Pin 5)
Is there
No
abnormality at the
a bit clock
parts and patterns
input?
in the input path?
Yes
To Step 5-1
Step 4-2: When a sound is not out with the analog
signal input
IC3013 (Pins 1,2)
RIN, LIN
Is there
No
observe the analog
a analog input
input signal at
signal?
IC3012-pins 3, 5?
Yes
Check the parts and patterns
in the path.
observe the analog
signal at IC3011
FUNC selection?
Check the parts and patterns
in the path.
Check the parts and patterns
in the path of ANALOG FUNC selection
(iPoD, F.AIN, AIN, etc).
IC651 (Pin 1)
HDSW
No
Is the voltage
Check the path to the microcomputer.
0 V?
Yes
5
6
Is there
No
Replace IC301
or IC651.
Is there
No
Replace IC301
or IC651.
Can
No
Yes
Can
No
input by
Yes
6
7
IC3013 (Pin 11)
DIRM
Is there
No
a master clock
input?
(24.576 MHz)
Yes
If there is not failure of a pattern,
replace IC301 or IC3013 or IC651.
IC651 (Pin 11)
Is there
No
a master clock
input?
(24.576 MHz)
Yes
IC3013 (Pin 10)
DIRL
Is there
No
a LR clock
input?
Yes
D
SX-LX70SW
7
8
Is there
No
a DIRM output
of IC301-pin 23
?
Yes
Check the parts and
patterns in the input path.
Is the voltage
of PDN input signal
at IC301-pin 31
Is the
3.3 V?
DRERR3 output
of IC301-pin 36
No
0 V?
Check the path to
No
the microcomputer.
Is there
No
abnormality at the
parts and patterns
in the input path?
Replace IC301
or IC651.
Is there
No
a DIRL output
of IC301-pin 24
?
Yes
Check the parts and
patterns in the input path.
Replace IC301 or IC3013 or IC651.
8
A
B
C
D
E
F
31