Pioneer VSX-C402-S Service Manual page 92

1
Step 5
IC8201
A
Is SPDIF signal coming?
(be different with Function)
Check
the DVD/CD
(pin 7).
Yes
B Check
the OPTICAL IN
(pin 48).
Yes
Is
MCKO1 (pin 23)
outputting it?
Yes
C
Is
LRCK (pin 24)
outputting it?
Yes
Is
D
SDTO (pin 25)
outputting it?
Yes
Is
BCK (pin 26)
outputting it?
Yes
IC8502-pin2
E
Is
20MHz clock
outputting it?
Yes
End
F
92
1
2
No Check the other assemblies.
No Check the OPTICAL IN line .
(Optical Input Jack or Connectors)
Is input
No signal of PDN No
(pin 31) "H"?
Yes
Do not
No
oscillate of XTO
(pin 29)?
Note:
X8201 oscillates
Yes
only in analog input.
No
Replace IC8201.
No
Replace IC8201.
No
Replace IC8201.
No
Replace IC8502 or X8501.
VSX-C402-S
2
3
Check the other assemblies.
(periphery of microcomputer )
Is output
signal of INT0
(pin 36) "H"?
Yes
3
4
No
Replace IC8201.
4