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Chapter 10. Replacing FRUs (Type 4105, 4157, 4217)
Important
Before you replace any FRU, read Chapter 2 “Safety information” on page 3. These precautions and
guidelines will help you work safely.
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.
Locating controls and connectors on the front of your computer
The following illustration shows the location of the controls and connectors on the front of your computer.
1
Optical drive (some models)
6
USB connector
2
3.5-inch diskette drive or card reader (some
models)
7
Hard disk drive activity light
3
USB connector
8
Power button
4
Microphone connector
9
Power-on indicator
5
Headphone connector
Rear connectors
The following illustration shows the locations of the connectors on the rear of the computer.
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