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Power Supply Concept
Figure 90: Power supply unit: LEDs
There are three LED displays on the front of the unit to allow the status of the
power supply unit to be monitored.
1
On/off display (green LED)
Lights up when the PRIMERGY BX600 S2 base unit is switched on.
2
Fault display (amber LED)
Lights up if a fault occurs on the power supply unit or if a fan
!
3
Mains power supply display (green LED)
Lights up when the mains connection is re-established.
1
If the large fan on the front fails, the power supply unit switches off. If one of the small fans
on the rear fails, the power supply unit continues to run. See
power supply unit fans.
When the base unit is operating normally, LEDs 1 and 3 will be on all the time
and LED 2 will be off. If LED 2 signals a fault by lighting up, the power supply
unit affected must be replaced as soon as possible. This can be done while the
base unit is still running (see
PRIMERGY BX600 S2 Basic Unit
page
142).
Power Supply Units
1 2 3
figure 90
for the location of the
1
fails.
141
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