Chapter 8. Replacing Frus; Installing Or Replacing Hardware (30Ag And 30Ah); Removing The Computer Cover - Lenovo ThinkStation P300 Hardware Maintenance Manual

Chapter 8. Replacing FRUs

Important: Before you replace any FRU, be sure to read and understand Chapter 1 "Safety information" on
page 1. These precautions and guidelines will help you work safely.
FRU replacements are to be done only by trained service technicians.
This chapter provides instructions about removing or replacing major FRUs. Not all FRUs are documented.

Installing or replacing hardware (30AG and 30AH)

This section provides instructions on how to install or replace hardware for your computer. You can expand
the capabilities of your computer and maintain your computer by installing or replacing hardware.
Important: Before you replace any FRU, be sure to read and understand Chapter 1 "Safety information"
on page 1.
Notes:
• Use only computer parts provided by Lenovo.
• When installing or replacing an option, use the appropriate instructions in this section along with the
instructions that come with the option.

Removing the computer cover

Important: Before you replace any FRU, be sure to read and understand Chapter 1 "Safety information"
on page 1.
CAUTION:
Before you open the computer cover, turn off the computer and wait several minutes until the
computer is cool.
To remove the computer cover, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
See "Locating connectors, controls, and indicators on the front of your computer" on page 67 and
"Locating connectors on the rear of your computer" on page 68.
2. Remove any locking device that secures the computer cover, such as a padlock or a Kensington-style
cable lock.
3. Remove any screws that secure the computer cover.
© Copyright Lenovo 2014 83