Lenovo ThinkCentre Edge 91 Hardware Maintenance Manual (HMM) (April 2012) - Th - Page 111
Replacing FRUs (Machine Types: 1857
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Chapter 9. Replacing FRUs (Machine Types: 1857, 1893, and 1895) Important: Be sure to read and understand Chapter 2 "Safety information" on page 3 before you replace any FRU. These precautions and guidelines will help you work safely. FRU replacements are to be done only by trained service technicians. This chapter does not contain the remove or replace procedure for all FRUs. Only the major FRUs are documented. Locations This section provides information to help you locate your computer connectors, components, parts on the system board, and internal drives. Note: The components in your computer might look slightly different from the illustrations. Locating connectors, controls, and indicators on the front of your computer Figure 35 "Front connector, control, and indicator locations" on page 107 shows the locations of the connectors, controls, and indicators on the front of your computer. Figure 35. Front connector, control, and indicator locations 1 Optical drive eject/close button 2 Power switch 5 USB connector (USB port 2) 6 Microphone connector © Copyright Lenovo 2011, 2012 107