Lenovo ThinkStation D20 Hardware Maintenance Manual - Page 85
Replacing FRUs (Type 4105
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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 7 Hard disk drive activity light models) 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. © Copyright Lenovo 2008, 2012 77