How To Install A Power Supply - Sun Microsystems Sun Fire 280R Service Manual

How to Install a Power Supply

Before You Begin
If you are installing a redundant power supply, it is not necessary to power off the
system. For more information, see "About Power Supplies" in your Sun Fire 280R
Server Owner's Guide.
What to Do
1. Unlock the system doors and swing them open.
Turn the keyswitch to the Power-On/Off position. This unlocks the system front
access doors.
2. If you are installing a replacement power supply for a system's only power
supply, power off the system.
See "How to Power Off the System" on page 5.
3. Loosen the Phillips screw that secures the power supply retaining clip until you
can push the clip up.
If your system has only one power supply, you can skip to Step 4.
4. If you are upgrading your system with an additional power supply, remove the
filler panel covering the power supply bay.
a. With one hand, push up the retaining clip until it clears the filler panel.
b. Partially pry the top of the filler panel out of the bay, using a flat-blade
screwdriver.
c. Lift the filler panel out and away from the bay, and set it aside.
d. Keep the filler panel in case you need to remove the power supply later.
The filler panel maintains proper system cooling and prevents electromagnetic
interference in the absence of a second power supply.
Caution – Never insert your hand into the power supply bay while the system is
running or while it is connected to AC power. Doing so could result in serious
personal injury.
142 Sun Fire 280R Server Service Manual • January 2001