Pioneer VSX-1017AV-K Service Manual page 57

5
B
Yes
CN701 (pins 2,3)
D+/D-
Are
No
there the waveforms
like figure?
Yes
Operation of IC701 is OK.
To STEP 4
Step 4: Audio Out check
IC701 (pin 105)
SPDIF
Is there
No
a SPDIF
signal
?
Yes
IC741 (pin 2)
SPDIF
Is there
No
a SPDIF
signal
?
Yes
IC741 (pin 4)
SPDIF
Are there No
audio signal
?
Yes
Check the parts and
pattern between IC701
and CN702.
5
6
D+ and D- should have
waveform during normal
condition.
Check the pattern in the path.
Check the MOTHER Assy.
Check the output from
IC701 (pin 105).
Check the output from
IC701 (pin 105).
Replace IC741.
VSX-1017AV-K
6
7
Fig. D+
X: 1 μsec/div, Y: 2 V/div
7
8
Fig. D-
X: 1 μsec/div, Y: 2 V/div
57
8
A
B
C
D
E
F