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Chapter 2. Replacing hardware
Attention
Do not open your computer or attempt any repair before reading the “Important safety
information” in the Safety and Warranty Guide that was included with your computer or in
the Hardware Maintenance Manual (HMM) for the computer. To obtain copies of the Safety
and Warranty Guide or the HMM, go to the Support Web site at http://www.lenovo.com/
support.
Note: Use only parts provided by Lenovo.
Opening the cover
Important
Turn off the computer and wait 3 to 5 minutes to let the computer cool
before opening the computer cover.
To open the computer cover, do the following:
1. Remove any media (diskettes, CDs, or tapes) from the drives, shut down your
operating system, turn off all attached devices and the computer.
2. Unplug all power cords from electrical outlets.
3. Disconnect the cables attached to the computer. This includes power cords,
input/output (I/O) cables, and any other cables that are connected to the
computer. See “Locating controls and connectors on the front of your
computer” on page 2 and “Locating connectors on the rear of your computer”
on page 3.
4. Remove any locking devices, such as a cable lock that secure the computer
cover.
5. Press the buttons on the sides of the computer and pivot the cover upward to
open the computer as shown.
© Lenovo 2006. Portions © IBM Corp. 2005. 5