Chapter 10. Replacing FRUs (Types 8098, 8171, 8172, 8173,
8424, and 8425)
FRU replacements are to be done by trained service technicians only.
This chapter does not contain a remove and replace procedure for all FRUs. Only
the major FRUs are documented in this manual.
Important:
Before you install or remove any FRU, read Chapter 2, “Safety information,”
on page 5. These precautions and guidelines will help you work safely.
Locating controls and connectors on the front of the computer
The following illustration shows the locations of the connectors on the front of the
computer.
Note: Not all computer models will have the following connectors.
1 Cover keylock (some models) 6 USB connectors (2)
2 CD or DVD drive 7 Microphone connector (line in)
3 Hard disk drive activity indicator 8 Headphone connector (line out)
4 Power-on indicator 9 Diskette drive
5 Power button
© Lenovo 2005, 2008. Portions © IBM Corp. 2005. 137
