Lenovo ThinkSystem SR655 V3 - Page 66

S002
CAUTION:
The power-control button on the device and the power switch on the power supply do not turn off the
electrical current supplied to the device. The device also might have more than one power cord. To
remove all electrical current from the device, ensure that all power cords are disconnected from the
power source.
Attention:
• Read
“Installation Guidelines” on page 35 and “Safety inspection checklist” on page 36 to ensure that you
work safely.
• Power off the server and peripheral devices and disconnect the power cords and all external cables. See
“Power off the server” on page 42.
Watch the procedure
A video of this procedure is available at YouTube:
https://www.youtube.com/playlist?list=PLYV5R7hVcs-
BashWCNZQEDP7o3EohXPEV
.
Procedure
Step 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 the
top cover, or remove the server from the rack. See
“Remove the server from rack” on page 43.
b. Remove the top cover. See
“Remove the top cover” on page 148.
c. Remove any parts and disconnect any cables that might impede your access to the CMOS
battery.
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.
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ThinkSystem SR655 V3 User Guide