Vega-MV Router Multiviewer - User Manual
Issue 1 Revision 2
Page 240
© 2017 SAM
Fault Identification and Basic Problem Solving
Trouble Shooting D.5
Steps b) to e) below check the mains supply, cable and fuses:
b)
Check that a mains cable rated to 13A is fitted
and it is plugged into an
active
AC mains supply (
100-240V AC 50/60Hz
).
c)
Check the frame’s internal PSU is fully inserted by pushing on the handle.
If a distinct 'click' is heard when pushing, then the PSU was not seated correctly.
(It has a spring-loaded locking tab which only engages in the chassis when the
PSU is fully seated.)
d)
Check the mains plug fuse, where fitted (e.g. UK mains plugs) is 13A.
LED
State
Description
DC OK
GREEN
PSU DC output is OK.
OFF
PSU DC output is less than approximately 18 VDC.
(See
Note 1
.)
AC OK
GREEN
PSU AC OK.
OFF
Mains AC Supply is not present (Most likely)
or Mains AC voltage less than approximately 82 V.
(See
Note 2.
)
Note 1: DC OK
LED
Off
:
If
AC OK
LED is Lit, this indicates that either:
1.
The frame’s internal DC supply is not present and has failed. Then
the front panel
P1
LED will also be Off and the chassis will not power
up without an External DC power supply (e.g. MV-EXTPSU3).
•
Replace the frame’s PSU. (See Section 10.6 “Replacing a PSU
module” on page 193.)
or,
2.
The frame’s internal DC supply has dropped out of range. Then the
front panel
P1
LED should be RED.
•
Proceed to
Procedure 2 - Front Panel P1 LED is RED or
on page 243.
Note 2: AC OK
LED
Off:
Follow
steps b) to e)
below,
to check some likely fault causes and to try to restore AC Mains to the unit.
Table 104 PSU Status LEDs
Important:
Replace cable with a 13A rated cable as a matter of urgency, if cable is not 13A rated or if
cable rating cannot be verified.
Important:
Replace mains plug fuse with a 13A fuse, if the original fuse is blown or if it is of a lower
rating.