Pioneer VSX-94TXH Service Manual page 64

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QQ
3 7 63 1515 0
Step 5 :Communication between DM850E and
System CPU
A
CN701 (Pins 2,3) D+/D-
Are there
No
the waveforms
like figure?
Yes
Operation of IC701 is OK
B
fig. : D+
C
TE
L 13942296513
fig. : D-
D
E
<Additional information>
• An IC having data (MAC addresses, Favorite and Details etc. that users have changed) on the network (Home Media
Gallery) is IC881 (AYW7185).
• How to confirm the network connection
Set to "Home Media Gallery" entry → Select "Set up" from home menu → Select "Network Setup" with ↑↓ Key →
When "Network Connection Network Found" is displayed, the network can be connected.
www
When "Network Connection No Network Found" is displayed, the network cannot be connected.
→ Check the router setting or LAN connection.
F
64
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http://www.xiaoyu163.com
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D+ and D- should have waveform
during normal condition.
Check the pattern in the path.
X : 1usec/div, Y : 2V/div
X : 1usec/div, Y : 2V/div
x ao
y
. i
VSX-94TXH
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http://www.xiaoyu163.com
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8
Step 6 : Audio Output
CN901 (Pin 13)
Is there
the SPDIF digital
audio signal?
No
IC701 (Pin 12)
Is there
the SPDIF digital
audio signal?
No
Check the DM850E operation
Q Q
3 6 7 1 3
u163
.
3
4
2 9 9 4 2 8
Yes
Check the DSP part
Yes
Check the parts and patterns in
the path.
1 5 0 5 8 2 9 9 4
m
co
4
9 9
2 8 9 9