Hot-Swapping A Power Supply - NEC EXPRESS5800/180Ra-7 User Manual

DEU Power Supply:
Perform steps 4 through 6 of the previous subsection Installing a DEU
Power Supply.

Hot-Swapping a Power Supply

If you are swapping out a faulty power supply, you can determine which one to
remove by checking the status LED indicators on each supply. If the Fail
indicator on a BSU power supply is flashing or if the POW indicator on a DEU
power supply is off, the power supply can be hot-swapped.
If the LED indicators on a power supply are lit, it is recommended that power to
the system be turned off before removing the power supply. To remove a power
supply, perform the following steps.
1. Unplug the power cord from the AC wall outlet and from the input
receptacle on the rear of the power supply to be removed.
2. If swapping a power supply from the BSU hold its front lever and pull the
power supply out of the bay.
3. If swapping a power supply from the DEU loosen its thumb lock screws and
pull the power supply out of the bay, see Figure 4-66.
4. Slide the replacement power supply into the power supply bay and secure as
follows.
BSU Power Supply:
Perform steps 5 through 7 of the previous subsection Installing a BSU
Power Supply
DEU Power Supply:
Perform steps 4 through 5 of the previous subsection Installing a DEU
Power Supply.
5. Connect the power cord to the AC wall outlet and to the input receptacle on
the rear of the new power supply.
4-60 Upgrading Your System