Avaya G450 Installing And Upgrading page 98

Upgrading and replacing Field Replaceable Units
Figure 41: Replacing a power supply unit
1. To remove a power supply unit:
a. Disconnect the G450 power cable from the mains socket.
b. Disconnect the G450 power cable from the power connector, located on the front
panel of the power supply unit, at the rear of the G450.
c. Loosen the two captive screws, one on each side of the power supply unit.
d. Grasp the two side handles and pull the power supply unit out of its slot.
2. To insert a power supply unit:
a. Position the power supply unit before the opening and engage both sides of the unit in
the interior guides.
b. Slide the power supply unit slowly into the chassis, maintaining an even pressure to
assure that the unit does not become twisted or disengaged from the guides.
c. Close and tighten the two captive screws on the front panel.
d. Connect the power cable to the power connector on the power supply unit.
e. Plug the power cable into a mains socket.
f. After powering up, use the show platform power CLI command to make sure
everything is OK. The upper PSU is referred to as PSU #1 in the CLI, and the lower
PSU is PSU #2.
98 Installation and Upgrades for the Avaya G450 Media Gateway