6-1
PowerSupplies 6
This chapter describes the power supplies and environmental sensing and
reporting in Ultra Enterprise systems. There are differencesin 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 page6-2
Distribution page6-3
Peripheral Power Supply page6-3
Troubleshootinga Peripheral Power Supply page6-4
Replacing a Peripheral Power Supply page6-4
Power/Cooling Module (PCM) page6-8
Troubleshootinga PCM page6-11
Replacing a PCM page6-11