Lenovo ThinkServer RD650 User Manual And Hardware Maintenance Manual page 141

Hazardous voltage, current, and energy levels are present inside any component that has this label
attached. There are no serviceable parts inside these components. If you suspect a problem with
one of these parts, contact a service technician.
Before you begin, print all the related instructions or ensure that you can view the PDF version on another
computer for reference.
Notes:
• To maintain the EMI integrity and cooling of the server, install a new power supply as soon as you remove
the failing one. Cover the other bay with a shield if you just use one power supply to provide power.
• Your power supply might look slightly different from the illustrations in this topic.
• Use any documentation that comes with the new power supply and follow those instructions in addition
to the instructions in this topic.
To install or replace a power supply, do the following:
1. Do one of the following:
• If you are installing a power supply, locate the bay for the power supply in the rear of your server.
Insert your index finger and thumb into the holes in the metal shield that protects the bay and pull the
shield out of the chassis. Store the shield in case that you later remove the power supply and need
the shield to cover the bay.
Figure 102. Removing the protective shield for the power supply bay
• If you are replacing a power supply, do the following:
a. Locate the failing power supply in the rear of your server and disconnect the power cord from the
failing power supply.
Note: On each power supply, there are three status LEDs near the power cord connector. For
information about the status LEDs, see "Power supply status LEDs" on page 52.
.
Chapter 6 Replacing hardware
127