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132 Operating Manual BX600 S3
Power Supply Units Power Supply Concept
© cognitas. Gesellschft für Technik-Dokumentation mbH 2009 Pfad: H:\April\PRIMERGY_Rebranding\von Walter\bx600_s3_ba\BX600S3_en\blade-us.k12
Figure 76: 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.
When the basic 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
basic unit is still running (see page 133).
1 On/off display (green LED)
Lights up when the PRIMERGY BX600 S3 basic unit is switched on.
2 Fault display (amber LED)
Lights up if a fault occurs on the power supply unit or if a fan
1
fails.
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 figure 76 for the location of the power
supply unit fans.
3 Mains power supply display (green LED)
Lights up when the mains connection is re-established.
1 2 3
!