Pioneer VSX-LX70 Service Manual page 64

1
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
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.
When "Network Connection No Network Found" is displayed, the network cannot be connected.
→ Check the router setting or LAN connection.
F
64
1
2
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
VSX-LX70
2
3
Step 6 : Audio Output
CN901 (Pin 13)
Is there
Yes
the SPDIF digital
Check the DSP part
audio signal?
No
IC701 (Pin 12)
Is there
Yes
Check the parts and patterns in
the SPDIF digital
the path.
audio signal?
No
Check the DM850E operation
3
4
4