TX300 S7 / RX350 S7 Upgrade and Maintenance Manual 185
Power supply
6.4 Replacing PSU modules
V CAUTION!
● When replacing a PSU module in a non-redundant PSU
configuration, the server must be switched off first.
● Ensure to replace a defective PSU module by a new module of the
same type.
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.
6.4.1 Required tools
● Preliminary and concluding steps: tool-less
● Replacing the PSU module: tool-less
Customer Replaceable Units (CRU)
Average task duration: 5 minutes
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