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7-1
PowerSupplies
7
This chapter describes the power supplies and environmental sensing and
reporting in Ultra Enterprise systems. There are differences in the power
distribution depending on the enclosure (16-slot or 8-slot).
There are two types of power supplies: a power/cooling module (PCM) and a
peripheral power supply (PPS).
Both types of power supplies are hot-pluggable. This feature allows you to
physically remove the failed component, despite its being “live,” or being
supplied with electrical power. In addition, a new component may be inserted
into a running system.
Safety Precautions page 7-2
Distribution page 7-3
Peripheral Power Supply page 7-3
Troubleshooting a Peripheral Power Supply page 7-4
Replacing a Peripheral Power Supply page 7-4
Power/Cooling Module (PCM) page 7-8
Troubleshooting a PCM page 7-11
Replacing a PCM page 7-11