Power Supply; Installing The Optional Power Supply - NEC EXPRESS5800/120Rc-2 Service Manual

Power Supply

Your system may contain one or two power supplies. The second power supply
is optional and provides a redundant configuration that ensures continued
operation of the system in the unlikely event one of the power supplies fails.
This section provides procedures for installing a second power supply as well as
removing a faulty power supply.

Installing the Optional Power Supply

To install the optional power supply:
1. Remove the system front bezel as described earlier in this chapter.
2. Power down the system.
3. Open the rear door of the system rack and swing the cable arm assembly
away from the system rear panel.
4. At the rear panel loosen the thumbscrew (A) on the optional power supply
access door. Open the door. See Figure 4-34.
Figure 4-34. Opening the Optional Power Supply Access Door
5. Referring to Figure 4-35, slide the optional power supply into the chassis,
close the access door and tighten the thumbscrew (A) that secures the power
supply access door.
A
Figure 4-35. Installing the Power Supply
A
Disassembly and Reassembly 4-31