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Barco – TransForm A – DOC-3358-2 – service manual – Revision 06 – March 2007
_________________________________________________________________________
2-11
2.3
OmniBus A18
2.3.1
The front of the OmniBus A18
4
5
6
3
1
2
1
front cover with ventilation slots
2
LED: operating status
off
power switch
[10] on the back switched off; please refer to
- red
power switch
[10] switched on, system in stand-by
- green
power switch
[10] switched on, O
MNI
B
US
A18 is started, either by the
On/Off
push button
[3] or via the remote power cable by the P
ROCESSOR
.
All power
modules that are currently in the O
MNI
B
US
A18 are working well.
- red blinking
•
Power failure at one power module (only with redundant power supplies)
•
One housing fan runs too slow or not at all
•
Overtemperature at temperature sensors on the backplane or CPU board.
3
push button On/Off
4, 5, 6
housing screws of the front cover
Figure 2-14
Front of the O
MNI
B
US
A18
Please note:
In an O
MNI
B
US
A18 with redundant power supply the LED [2] is also lighting green, if one of the
two power modules is removed but the remaining power module is working well.
It is not an indicator that redundancy is available!