Barco – TransForm A – DOC-3358-2 – service manual – Revision 06 – March 2007
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3-3
3.2
Exchanging power modules
3.2.1
Redundant power modules of Processor and Extender
The redundant power modules of the P
ROCESSOR
or the E
XTENDER
can be connected to two independent power nets.
If one of the two power modules or a power net is failing, you can hear a buzzer alarm that can be reset by
pushing the red
buzzer reset button [5] at the front of the device, please refer to
Figure 2-1 Front view of Processor
/
Figure 2-21 Front view of the Extender
. Also the LED
power module failed [6] at the front starts to lighten. This LED
lightens as long as the failure persists even if the
buzzer reset button has been pressed.
37
25
38
35
36
14
14
14
air supply
25
mains connection
35
power switch
36
green LED: power module operating
37
securing screw
38
handle
Figure 3-2
Power module on the rear of P
ROCESSOR
or E
XTENDER
for redundant operation
The defective power module or the failing power net can be located by examining the individual LED’s
power
module operating [36] on the back of the device. If the green LED on a power module is off even though it is
switched on, the module is either defective and must be re-placed or the power net connected to it has failed.
Exchange of a redundant power module
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!
•
Locate the defective power module by examining the
green LED’s [36] on the individual power modules. If
an LED is not lighting even though it is switched on, the respective power module is defective.
•
Turn off the individual
power switch [35] of the defective power module!
•
Unplug the power cord from the mains connection [25] of the concerned power module!
•
Loosen the
securing screws [37] on the top of the power module!
•
Remove the defective power module by pulling at the
handle [38]!
•
Take a new power module and check that its
power switch [35] is switched off.
