Table of Contents
Advertisement
5.1.3 Replacing a power module of OmniBus A12
The O
B
A12 with redundant, hot-plug power modules can be connected to three independent power nets. If
MNI
US
one of the three power modules or a power net is failing, you can hear a buzzer alarm that can be reset by push-
ing the red
buzzer reset
OmniBus
A12. Also the LED
long as the failure persists even if the
23
air supply
24
mains connection
25
LED: power status
27
unlock-handle-bar
28
handle
The defective power module or the failing power net can be located by examining the individual LED's
status
[25] on the back of the device, see above. If the LED of one power module is off or lightens red while the
LED's of the other two power modules lightens green, then the power module with the non-green LED is either
defective and must be re-placed or the power net connected to it has failed.
Exchange of a redundant power module
Take care NOT to remove a power module from the device unless you unplugged its power
cord.
Never touch the contacts on the backside of a power module. There is the danger of being
harmed by residual voltage! Furthermore the operation of the power module might be
impacted by impurities!
Use gloves to remove the power module. The cover of the power module is been used as
heat sink for cooling, usually the temperature is around 50 – 60° Celsius under full
condition!
When exchanging a power module during operation of the OmniBus A12, the two other
power modules have to be in operation.
•
Locate the defective power module by examining the
see above.
•
Unplug the power cord from the
•
Push the
unlock-handle-bar
remove the defective power module by pulling at the
•
Take a new power module and insert it into the system. Take care to insert it in the same orientation like
the other modules with the
•
Make sure that the
unlock-handle-bar
•
Re-plug the power cord into the
•
LED
Check that the
[25] lightens up green!
•
Check that the red LED
Please note: As soon as the defective power module is removed and the remaining two power modules are
working well, this LED will also stop to shine. It only indicates if a defective component is in the device.
Barco – TransForm A - X Terminal – DOC-3265-2 – user's manual – Revision 09 – September-2006
button [5] at the front of the O
standby / component failed
buzzer reset
mains connection
[27] to the right unless the power module is released, keep it at the right and
mains connection
[27] engages!
mains connection
standby / component failed
B
A12, please refer to
MNI
US
[6] at the front starts blinking. This LED remains blinking as
button has been pressed.
LED's
[25] on the individual power modules, please
[24] of the concerned power module!
handle
[28]!
[24] on the left side!
[24]!
[6] at the front of the O
5. Maintenance
Figure 3-7 Front view of
27
25
23
24
28
Power module on the rear of O
B
A12 stops to shine!
MNI
US
______________________________________________________
Figure 5-1
B
A 12
MNI
US
power
5-3
Advertisement
Table of Contents
