Chapter 2. Overview
This guide provides information about replacing Customer Replaceable Units
(CRUs).
Note: Use only parts provided by Lenovo.
This guide contains instructions for installing or replacing the following parts:

v Front Bezel

v Battery

v Power supply

v Heat sink

v Primary hard disk drive

v Secondary hard disk drive

v Optical drive

v Diskette drive

v Memory modules

v PCI adapter

v Front fan assembly

v Rear fan assembly

v Keyboard

v Mouse
Additional information resources
If you have Internet access, the most up-to-date information for your computer is
available from the World Wide Web.

You can find:

v CRU removal and installation information

v CRU removal and installation videos

v Publications

v Troubleshooting information

v Parts information

v Downloads and drivers

v Links to other useful sources of information

v Support phone list

To access this information, go to:

http://www.lenovo.com/support
© Lenovo 2005, 2008. Portions © IBM Corp. 2005. 3