TX140 S1 Upgrade and Maintenance Manual 239
Expansion cards and backup units
9.2.3.2 Preliminary steps
Before replacing an expansion card, perform the following steps:
Ê Disable BitLocker functionality as described in section "Disabling BitLocker
functionality" on page 93.
Ê Disable boot watchdog functionality as described in section "Disabling
SVOM boot watchdog functionality" on page 94.
Ê If applicable, open the rack door as described in section "Opening the rack
door" on page 61.
Ê Locate the defective server as described in section "Locating the defective
server" on page 54.
Ê Shut down the defective server as described in section "Shutting down the
server" on page 61.
Ê Remove the AC power cord from the cable tie and disconnect it from the
system as described in section "Disconnecting power cords" on page 63.
Ê Remove all external cables from the expansion card to be replaced.
Ê When working on a rack-mounted server, extend it out of the rack as
described in section "Extending the server out of the rack" on page 65.
If further required, remove the server from the rack as described in section
"Removing the server from the rack" on page 66.
Ê Bring the server to its horizontal position.
Ê Open the side / top cover as described in section "Removing the top cover"
on page 67 (rack server) or "Removing the side cover" on page 71 (tower
server).
Ê Remove the fan module as described in section "Removing the fan module"
on page 208.
Ê Locate the defective expansion card using the onboard Local Diagnostic
LEDs as described in section "Onboard indicators and controls" on
page 578.
9.2.3.3 Removing an expansion card
Ê If applicable, remove SFP+ transceiver modules from the expansion card to
be removed, as described in section "Replacing SFP+ transceiver modules"
on page 291.
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