272 Upgrade and Maintenance Manual TX140 S1
Expansion cards and backup units
9.3.6.1 Required tools
● Preliminary and concluding steps: tool-less
● Installing a FBU: tool-less
9.3.6.2 Preliminary steps
Before replacing a FBU, perform the following steps:
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 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 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.
9.3.6.3 Removing the FBU from the chassis
Ê Remove the FBU from the chassis as described in section "Removing a
FBU" on page 264.
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