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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 Quick Reference that was included with your computer or in the
Hardware Maintenance Manual (HMM) for the computer. To obtain copies of the Quick
Reference or the HMM, go to the Support Web site at
http://www.lenovo.com/think/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:
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 the floor stand, if attached.
5. Remove any locking devices, such as a Kensington lock, that secure the
computer cover.
6. Press inward on the two buttons and pivot the top cover upward.
© Lenovo 2005. Portions © IBM Corp. 2005. 5