Pioneer XV-EV61 Service Manual page 125

5
7.1.5 DSP TROUBLE SHOOTING (XV-EV61 Only)
XV-EV61 Type Only
• When a sound is not out in the surround mode with the digital signal input.
• Suppose C,R parts to be poor contact and that is not damaged.
• This shows failure analysis of DSP Assy.
Step 1
IC8501-pin 21
Is output
No
signal "L"?
Yes
CN8007
Is connector
No
inserted tightly
?
Yes
CN8011
Is connector
No
inserted tightly
?
Yes
End
5
6
Replace IC8501.
Insert it tightly.
Insert it tightly.
6
7
Step 2
IC8901
Is 5V
inputting ?
Yes
Is 3.3V
outputting ?
Yes
IC8902
Yes
Is 1.8V
outputting ?
Yes
End
Step 3
IC8702
Pin 3
Do perform
3V→5V conversion
for pin 17 ?
Yes
Pin 5
Do perform
3V→5V conversion
for pin 15 ?
Yes
Pin 7
Do perform
3V→5V conversion
for pin 13 ?
Yes
A
XV-EV61
7
8
No Check CN8003 and
other assemblies.
No
Replace IC8901.
No
Replace IC8902.
No
Replace IC8702.
No
Replace IC8702.
No
Replace IC8702.
8
A
B
C
D
E
F
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