Lenovo ThinkCentre A57 Hardware Maintenance Manual - Page 99
Replacing FRUs (Types 7064, 7094, 9349, 9356, 9357, 9439, 9488, 9702, 9708, 9709, 9789,
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Chapter 9. Replacing FRUs (Types 7064, 7094, 9349, 9356, 9357, 9439, 9488, 9702, 9708, 9709, 9789, 9851, 9948) Important Before you replace any FRU, read "Important Safety Information" on page 1. 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. Locations The following illustrations help you locate the various connectors, controls. and components of the computer. Rear connectors The following illustration shows the locations of the connectors on the rear of the computer. 1 Power supply diagnostic LEDs (some 10 models) 2 Voltage selection switch (some 11 models) 3 Power connector 12 4 Standard mouse connector 13 Ethernet connector USB connectors (2) Microphone connector Audio line out connector © Copyright Lenovo 2005, 2010 91