Lenovo ThinkCentre M55 - Manual (Page 5)

Contents
Overview . . . . . . . . . . . . . . v
Safety information for customers . . . . . . . v
Safety information for service personnel . . . . . v
Additional information resources . . . . . . . v
Tools required . . . . . . . . . . . . . vi
Handling static-sensitive devices . . . . . . . vi
Chapter 1. Locations . . . . . . . . . 1
Locating components . . . . . . . . . . . 1
Locating controls and connectors on the front of the
computer . . . . . . . . . . . . . . . 2
Locating connectors on the rear of the computer . . 3
Identifying parts on the system board . . . . . . 4
Chapter 2. Replacing hardware . . . . . 5
Removing the computer cover . . . . . . . . 5
Removing the hard disk drive mounting bracket . . 7
Removing and replacing the front bezel . . . . . 8
Replacing the power supply . . . . . . . . . 8
Replacing the system board . . . . . . . . . 10
Replacing the microprocessor . . . . . . . . 16
Replacing a memory module . . . . . . . . 23
Replacing an adapter . . . . . . . . . . . 24
Replacing the hard disk drive . . . . . . . . 25
Replacing an optical drive . . . . . . . . . 26
Replacing the diskette drive . . . . . . . . . 28
Replacing the system fan assembly . . . . . . 29
Replacing the keyboard . . . . . . . . . . 31
Replacing the mouse . . . . . . . . . . . 32
Replacing the internal speaker . . . . . . . . 33
Completing the installation . . . . . . . . . 34
Updating (flashing) BIOS from a diskette or
CD-ROM . . . . . . . . . . . . . . . 36
Appendix. Notices . . . . . . . . . . 37
Television output notice . . . . . . . . . . 38
Trademarks . . . . . . . . . . . . . . 38
© Lenovo 2006. Portions © IBM Corp. 2005, 2006. iii