Pioneer VSX-1022-K Service Manual page 34

1
A
Step 6: X'tal
IC1401 (pin 7)
Is there a 24.576 MHz
output?
Yes
IC1601 (pin 17)
Is there a 24.576 MHz
B
input?
Yes
To Step 7
Step 7: DIR
Check that the S/PDIF signal is input.
Check that changes by pulling out and inserting the digital input lines.
CN1402 (pins 5, 8)
C
Can observe the
digital signal?
Yes
IC1401 (pin 67)
Can observe the
digital signal?
Yes
IC1401 (pin 61)
D
Can observe the
digital signal?
Yes
IC1401 (pin 59)
Can observe the
digital signal?
Yes
E
IC1401 (pin 63)
Can observe the
digital signal?
Yes
SPDIF INPUT line is OK.
F
34
1
2
DIRMCKI
No
Check the IC1401, IC1402 and its peripheral
circuits or replace the D-MAIN Assy.
XMCK
No
Check the IC1601 and its peripheral
circuits or replace the D-MAIN Assy.
5: COAX
8: OPT
No
Check the wire between D-MAIN
and OPTCO Assemblies.
COAX
No
Check the path to pins 10 to 13 of
IC1403 or replace IC1403.
(0 V ↔ 3.3 V)
OPT
No
Check the path to pin 8 of CN1402
or replace IC1403.
(0 V ↔ 3.3 V)
ARC
No
Check the path to pins 1 to 4 of IC1403
or replace IC2009.
(0 V ↔ 3.3 V)
Network/USB/iPod
No
Check the path to pins U3 of IC9204
or replace the D-MAIN Assy.
(0 V ↔ 3.3 V)
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3
VSX-1022-K
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4
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