150 Upgrade and Maintenance Manual TX140 S1
Power supply
6.3.2.2 Preliminary steps
Before replacing the PSU module, perform the following steps:
Ê Only when replacing a power supply module in a non-redundant
configuration: Disable BitLocker functionality as described in section
"Disabling BitLocker functionality" on page 93.
Ê If applicable, open the rack door as described in section "Opening the rack
door" on page 61.
Ê Locate the desired server as described in section "Locating the defective
server" on page 54.
Ê Only when replacing a power supply module in a non-redundant
configuration: Shut down the 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.
6.3.2.3 Removing the power supply module
Figure 58: Removing the power supply module
Ê Fold up the handle on the PSU module (1).
Ê Press in on the green locking latch (2).
Ê While keeping the green locking latch pressed, pull the PSU module out of
its slot (3).
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