IBM x3550 M4 Type 7914 Installation And Service Manual page 301

Replacing a hot-swap dc power supply:
To install a hot-swap dc power supply, complete the following steps.
About this task
Attention: Only trained service personnel other than IBM service technicians are
authorized to install and remove the -48 volt dc power supply, and make the
connections to and disconnections from the -48 volt dc power source. IBM service
technicians are not certified or authorized to install or remove the -48 volt power
cable. The customer is responsible for ensuring that only trained service personnel
install or remove the -48 volt power cable.
Procedure
1. Read the safety information that begins on "Safety" on page vii and
"Installation guidelines" on page 33.
2. Touch the static-protective package that contains the hot-swap power supply
to any unpainted metal surface on the server; then, remove the power supply
from the package and place it on a static-protective surface.
3. Turn off the circuit breaker for the dc power source to which the new power
supply will be connected. Disconnect the power cord from the dc power
source.
4. Attach the dc power cable to the new power supply.
Figure 172. DC power supply rear view
5. If you are installing a hot-swap power supply into an empty bay, remove the
power-supply filler from the power-supply bay.
Chapter 6. Removing and replacing components
283