IBM System x3550 M5 Type 5463 Installation And Service Manual page 235

4. If necessary, lift PCI riser-card assembly 1 or the 2.5-inch hot-swap rear hard
disk drive kit out of the chassis (see "Removing a PCI riser-card assembly" on
page 170 or "Removing the 2.5-inch hot-swap rear hard disk drive kit" on page
148).
5. Locate the system battery on the system board.
Figure 135. Location of system battery on system board
a. If there is a rubber cover on the battery holder, use your fingers to lift the
battery cover from the battery connector.
b. Use one finger to tilt the battery horizontally out of its socket, pushing it
away from the socket.
Attention: Neither tilt nor push the battery by using excessive force.
Figure 136. System battery removal
c. Use your thumb and index finger to lift the battery from the socket.
Attention: Do not lift the battery by using excessive force. Failing to
remove the battery properly may damage the socket on the system board.
Any damage to the socket may require replacing the system board.
Chapter 5. Removing and replacing components
219