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Vega-MV Router Multiviewer - User Manual
Issue 1 Revision 2
Page 242
© 2017 SAM
Fault Identification and Basic Problem Solving
Trouble Shooting D.5
Figure 158 Locating MV-NET card’s D5 LED;
1U chassis: (horizontally-mounted MV-NET card) D5 towards rear left-hand side;
3U chassis: (vertically-mounted card) D5 towards rear bottom.
Note:
Explanation of diagnosis:
If the PSU’s
AC OK
and
DC OK
LEDs are both lit,
then the PSU is receiving the correct AC mains and providing a ~24VDC frame supply.
And if the front panel
P1
LED is Off, it means the MV-NET card is not receiving 24VDC
internally; because either:
•
The MV-NET card has detected a short on its 24VDC input and is in some
protection mode
•
Or the MV-NET card itself is potentially faulty.
D5 LED
“HOT-SWAP” LED
MV-NET card