Lenovo ThinkSystem SR665 V3 User Manual

Also see for 7D9A: System configuration guide User guide

S002CAUTION:The power-control button on the device and the power switch on the power supply do not turn off theelectrical current supplied to the device. The device also might have more than one power cord. Toremove all electrical current from the device, ensure that all power cords are disconnected from thepower source.Attention:• Read “Installation Guidelines” on page 39 and “Safety inspection checklist” on page 40 to ensure that youwork safely.• Power off the server and peripheral devices and disconnect the power cords and all external cables. See“Power off the server” on page 48.Watch the procedureA video of this procedure is available at YouTube: https://www.youtube.com/playlist?list=PLYV5R7hVcs-DR4X1YAcp9wFKhwj_tLQ5Y.ProcedureStep 1. Make preparation for the task.a. If the server is installed in a rack, slide the server out on its rack slide rails to gain access to thetop cover, or remove the server from the rack. See “Remove the server from rack” on page 49.b. Remove the top cover. See “Remove the top cover” on page 161.c. Remove any parts and disconnect any cables that might impede your access to the CMOSbattery.Step 2. Locate the CMOS battery. See “System-board-assembly connectors” on page 21.Step 3. Remove the CMOS battery.Attention:• Differentiate between the positive and negative ends of the battery socket as shown below.• Failing to remove the CMOS battery properly might damage the socket on the processor board.Any damage to the socket might require replacing the processor board.• Do not tilt or push the CMOS battery by using excessive force.62 ThinkSystem SR665 V3 User Guide