Lenovo ThinkPad 760CD ThinkPad 380, 385, 560, 560E, all 760, 765 and SelectADo - Page 634

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 service 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 startup sequence might have been altered. If you select an incorrect drive, data or programs can be overwritten. Replace FRUs only for the correct model. When you replace the FRU, make sure the model of the machine and FRU part number are correct by referring to the part list. FRUs should not be replaced because of a single, unreproducible failure. A single failure can occur from a variety of reasons that have nothing to do with a hardware defect; such as: cosmic radiation, electrostatic discharge, or software errors. FRU replacement should be considered only for a recurring problem. If you suspect an unreproducible failure, clear the error log and run the test again. Do not replace any FRUs if the error log did not reappear. Be careful not to replace a nondefective FRU. How to Use Error Messages: Use the error codes displayed on the screen to diagnose failures. If more than one error code is displayed, begin the diagnosis with the first error code. If no error code is displayed, see if the error symptom is listed in the "Symptom-to-FRU Index" on page 640. How to Diagnose Multiple FRUs: If the adapter or device has more than one FRU, the error code could be caused by either FRU. Before replacing multiple FRUs, try removing or exchanging each FRU, one by one in the designated sequence, to see if the symptoms change. What to Do First: The servicer must include the following in the parts exchange form or parts return form that is attached to the returned FRU. 1. Name and phone number of servicer. 2. Date of service. 3. Date when part failed. 4. Date of purchase. 622 IBM Mobile Systems HMM