Lenovo ThinkPad 380D TP 380Z Hardware Maintenance Manual (August 1998) for use - Page 5
Read This First, Read FRU Removal and Replacement - thinkpad 380z
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Read This First Before you go to the checkout guide, be sure to read this section. Important Notes Only certified trained personnel should service the computer. Read FRU Removal and Replacement procedures before replacing any FRUs. Be extremely careful during write operations such as copying, saving, or formatting. Drives in the computer that you are servicing might have been rearranged or the drive start-up sequence might have been altered. If you select an incorrect drive, data or programs might be overwritten. Replace FRUs only for the correct model. When you replace a FRU, make sure the model of the machine and FRU part number are correct by referring to the FRU parts list. A FRU should not be replaced because of a single, unreproducible failure. Single failures can occur from a variety of reasons that have nothing to do with a hardware problem, such as: cosmic radiation, electrostatic discharge, or software errors. FRU replacement should be considered only when a recurring problem exists. If this is suspected, clear the error log and run the test again. Do not replace any FRUs if log errors do not reappear. Be careful not to replace a nondefective FRU. ThinkPad 380Z 3