Lenovo ThinkPad S1 Yoga Hardware Maintenance Manual

Also see for Thinkpad s1 yoga: User guide User guide Safety, warranty, and setup guide Safety, warranty, and setup guide Hardware Maintenance Manual

Contents

180 degrees more(Cross-section)Notes:• Ensure that you use the correct screw. It is recommended to use new screws for replacements. If youhave a torque screwdriver, tighten all screws firmly to the torque specified in the screw informationtable for each step.• Ensure that torque screwdrivers are calibrated correctly following country specifications.Retaining serial numbersThis topic provides instructions on the following:• “Restoring the serial number of the system unit” on page 54• “Retaining the UUID” on page 55Restoring the serial number of the system unitWhen the computer was manufactured, the EEPROM on the system board was loaded with the serialnumbers of the system and all major components. These numbers need to remain the same throughoutthe life of the computer.If you replace the system board, you must restore the serial number of the system unit to its original value.The serial number of the system unit is written on the label attached to the bottom of the computer.If you cannot find the serial number of the system unit on the bottom of the computer, try the followingmethod to get the number:Note: Before you perform the operation, ensure that the UEFI/Legacy setting within the Startup menu inthe ThinkPad Setup program is set to UEFI Only.1. Connect a USB memory key to the computer.2. Go to http://www.lenovo.com/maintenanceutilities and follow the instructions on the screen to create aMaintenance Key.Note: Only an authorized Lenovo service technician can access the above Web site.3. Restart the computer.4. When the logo screen is displayed, press Esc. The ThinkPad Config Information Update Utility interfaceis displayed.5. Type 1 under Enter the action desired, then press Enter. The ThinkPad Serial Number Update Utility forAsset ID screen is displayed.6. Type 2 under Enter the action desired, then press Enter. The serial number of each device in yourcomputer is displayed; the serial number of the system unit is listed as follow:20- Serial number7. Record the serial number of the system unit.After you replace the system board, do the following to restore the serial number of the system unit:1. Connect the Maintenance Key to the computer.54 Hardware Maintenance Manual