Removing A Power Supply; Hot-Swapping A Power Supply - NEC HX4500 User Manual

Removing a Power Supply

If the LED indicators on a power supply are lit, it's recommended that power to the
system be turned off before removing the power supply. To remove a power supply,
perform the following steps.
1. Power off the system.
2. Unplug the power cord from the AC wall outlet and from the input receptacle on the
rear of the power supply you are removing.
3. Loosen the thumb lock screws (see Figure 4-17, A) that secure the power supply.
4. Hold the handle on the power supply and pull the power supply out of the system.
5. If you are replacing a power supply, go to "Installing a Power Supply," otherwise
power on the system.

Hot-Swapping a Power Supply

If you are swapping out a faulty power supply, you can pinpoint which one to remove
by checking the status LED indicators on each supply. If either or both of the LED
indicators are off, the power supply can be hot-swapped.
If the LED indicators on a power supply are lit, it's 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.
2. Loosen the thumb lock screws (see Figure 4-17, A) that secure the power supply
you want to replace.
3. Hold the handle on the power supply and pull the power supply out of the system.
4. Slide the replacement power supply into the chassis and tighten the thumb screws
(see Figure 4-17, A) that secure the 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.
4-30 Upgrading Your System