Chapter 10. Replacing Frus (Type 4105, 4157, 4217); Locating Controls And Connectors On The Front Of Your Computer; Rear Connectors - Lenovo 410554U Hardware Maintenance Manual

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)
2
3.5-inch diskette drive or card reader (some
models)
3
USB connector
4
Microphone connector
5
Headphone connector

Rear connectors

The following illustration shows the locations of the connectors on the rear of the computer.
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6
USB connector
7
Hard disk drive activity light
8
Power button
9
Power-on indicator
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