Barco TransForm A, Руководство по обслуживанию

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Barco – TransForm A – DOC-3358-2 – service manual – Revision 06 – March 2007
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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 Figure 2-15 Back of
the OmniBus A18 .
- 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!