Lenovo 3000 Personal Computer User Manual


 
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 HMM, go to http://www.lenovo.com/support.
Note: Use only the parts provided by Lenovo.
Removing the cover
Important
Turn off your computer and wait 3 to 5 minutes to let the computer cool
before removing the computer cover.
To remove the computer cover:
1. Remove any media (diskettes, CDs, or tapes) from the drives, shut down your
operating system, and turn off all attached devices.
2. Unplug all power cords from electrical outlets.
3. Disconnect all cables attached to the computer. This includes power cords,
input/output (I/O) cables, and any other cables that are connected to the
computer.
4. Remove the optional floor stand, if attached.
5. Remove any locking devices such as a padlock that secure the cover.
© Lenovo 2005. Portions © IBM Corp. 2005. 7