Lenovo ThinkSystem SR550, Maintenance Manual

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remove all electrical current from the device, ensure that all power cords are disconnected from the
power source.
Before removing the CMOS battery:
1. Remove the top cover. See “Remove the top cover” on page 56.
2. Remove the air baffle. See “Remove the air baffle” on page 60.
To remove the CMOS battery, complete the following steps:
Watch the procedure
A video of this procedure is available at https://www.youtube.com/playlist?list=PLYV5R7hVcs-
C9jFjZnXQ6AmTXaIdX6_HJ .
Step 1. Locate the CMOS battery, see “System board components” on page 27.
Step 2. Remove the CMOS battery.
Attention:
• Failing to remove the CMOS battery properly might damage the socket on the system board.
Any damage to the socket might require replacing the system board.
• Do not tilt or push the CMOS battery by using excessive force.
Figure 121. CMOS battery removal
After removing the CMOS battery:
1. Install a new CMOS battery.
2. Dispose of the CMOS battery as required by local ordinances or regulations.
Install the CMOS battery
Use this information to install the CMOS battery.
“
Read
the
installation
Guidelines” on
page 53
“
Power off
the server
for this task”
on page 13
“
ATTENTION:
Static Sensitive Device
Ground package before opening”
on page 56
The following tips describe information that you must consider when installing the CMOS battery.
• Lenovo has designed this product with your safety in mind. The lithium battery must be handled correctly
to avoid possible danger. If you install the CMOS battery, you must adhere to the following instructions.
Chapter 3
.
Hardware replacement procedures
153