Lenovo ThinkPad 600E Hardware Maintance Manual - June 1999: ThinkPad 600, 600E - Page 26
System Board Replacement Notice, Notice for 770E and 600
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FRU Replacement Notices Torque driver If you have a torque driver, refer to the "Torque" column with each step. Make sure you use the correct screw, and tighten all screws firmly to the torque shown in the table if you have a torque screwdriver. Never use a screw that you removed. Use a new one. Make sure the screws are tightened firmly System Board Replacement Notice Notice for 770E and 600: Restoring the System Unit Serial Number: The EEPROM on the system board contains vital product data (VPD), such as the system unit serial number and the system board serial number. You must restore the system unit serial number to its original number when the system board is replaced. To restore the system unit serial number, do the following: 1. Press and hold F1 and power on the computer. 2. Hold down F1 until the Easy-Setup menu appears. 3. Click on Config. 4. Press Ctrl + N. The System Unit Serial Number menu appears. 5. Follow the instructions on the menu. Notes: 1. Do not power-off the computer during the restoration process. 2. The serial number label is attached to the bottom of the computer. Notice for 770X and 600E Serial Numbers: When the computer was manufactured, the EEFROM on the system board was loaded with the serial numbers of the system and all major components. The EEPROM contains the following serial numbers: System board serial number System unit serial number CPU Card serial number DC-DC Card serial number 20