152 Upgrade and Maintenance Manual TX140 S1
Power supply
6.3.3 Replacing the power distribution board
V CAUTION!
Follow the safety instructions in chapter "Important information" on
page 41.
I Note for servers using CMA (Cable Management Arm)
Since the installed CMA is blocking PSU modules, additional steps are
required in order to remove or replace PSU modules:
Ê Unlock the CMA stopper.
Ê Remove the CMA stopper with the mounted crossbar.
Ê Support the CMA stopper, the crossbar and the CMA arm including
cables with your right hand.
Ê Remove the PSU module and carefully install a new PSU module.
Ê Remount the complete assembly (CMA stopper, crossbar and CMA
arm) into the rail.
6.3.3.1 Required tools
● Preliminary and concluding steps: tool-less
● Main steps: tool-less
6.3.3.2 Preliminary steps
Before replacing the power distribution board, perform the following steps:
I You are advised to perform this routine with the server in a horizontal
position.
Ê Disable BitLocker functionality as described in section "Disabling BitLocker
functionality" on page 93.
Field Replaceable Units (FRU)
Average task duration: 15 minutes
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