Fujitsu PRIMERGY RX2540 M6 Upgrade And Maintenance Manual page 128

Power supply unit (PSU)
Note for removing a hot-plug PSU from a redundant configuration
If a hot-plug PSU should be removed from a redundant configuration, while the
system is in operation, proceed the following:
▶ Disconnect the power cord from the dedicated PSU, see
power cord" on page
A CSS error is detected and the message "redundancy lost" is displayed
using the iRMC S5 web interface. Your configuration is now non-redundant.
The CSS error is only an information. After removing the PSU out of its bay,
the CSS error will be cleared automatically.
Note for servers using CMA (Cable Management Arm)
Regarding of removing PSUs, additional tasks are needed, due to an
interference between CMA and the PSUs.
Figure 45: Unlocking the CMA
▶ Push the lock spring inward to unlock the CMA bracket.
▶ Remove the CMA.
▶ Hold the CMA including cables in the one hand.
▶ Remove the PSU and install the dummy cover carefully.
Note for PSU 1:
Remove the PSU 1 carefully while lifting PSU 1 and bringing PSU 1
to the right, in order to avoid interference.
▶ Mount the complete assembly (CMA bracket and the CMA) again into the
rail.
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Upgrade and Maintenance Manual
"Disconnecting the
RX2540 M6