Sun Microsystems Netra CT 820, Service Manual

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6-1
C H A P T E R
6
Removing and Replacing Hot-
Swappable Subassemblies
Following are the hot-swappable subassemblies in the Netra CT 820 server:
■
Section 6.1, “Removing and Installing Power Supplies” on page 6-1
■
Section 6.2, “Removing and Installing Fan Trays” on page 6-4
■
Section 6.3, “Removing and Installing the Air Filter” on page 6-6
6.1 Removing and Installing Power Supplies
The Netra CT 820 server accommodates up to eight 250W modular power supplies.
The power supplies are load sharing, and hot-swappable, and plug directly into the
power trays (
FIGURE 6-1
).
The number of power supplies needed in any given system depends on the load in
that system. Every Netra CT 820 server is shipped out with eight power supplies;
this is the suggested number of power supplies to ensure complete power supply
redundancy in your system.
Caution – Power supply maintenance should only be performed by trained
personnel. When the system is plugged in, energy hazards are present on the
midplane. Do not reach into the enclosure.
Caution – All power supplies must be of identical make and model. If changing
make or model, power must be removed from the chassis and all supplies must be
replaced.