
Vega-MV Router Multiviewer - User Manual
Issue 1 Revision 2
Page 239
© 2017 SAM
Fault Identification and Basic Problem Solving
Trouble Shooting D.5
D.5.4.2
More Diagnoses
Using a known working MV-EXTPSU3 unit:
The external power supply frame, MV-EXTPSU3, may power a Vega-MV frame which has a
faulty internal PSU or no internal PSU fitted.
If a known working MV-EXTPSU3 is used and is connected to a Vega-MV frame, then the
P1
LED should be lit Green.
If the
P1
LED is OFF in this case, then the MV-NET card may not be reporting a valid internal
frame DC supply, for some reason. For example, there may be a be short-circuit on the card
or in the frame, or the MV-NET card itself may be faulty.
Fill out a
and contact your dealer or SAM Support for details on how to
proceed.
Unit Failure to Power up or to Power cycle or Unit shuts down:
If the
P1 LED
is OFF, and the Vega-MV unit fails to power up or power cycle or the unit
completely shuts down during operation, the most likely reasons are:
•
Mains cable not present or accidentally removed or not properly connected or faulty.
•
Power supply (PSU) not fully inserted.
•
Blown mains cable fuse (e.g. UK mains plug).
•
Blown chassis fuse.
•
Power supply (PSU) in safety shutdown state.
•
PSU failure.
•
MV-NET card short detection or fault.
Identifying the possible cause of the fault:
Follow steps a) to h) below to identify the possible cause of the fault:
a)
Open the front panel.
Check the two PSU status LEDs, see Figure 157.
The two LEDs should be lit, see Table 104.
Figure 157 PSU Status LEDs
DC OK
AC OK