Installing and Removing Power Supply Units
This section provides instructions for installing and removing the power supply units in the Cisco MDS 9220i
switch.
Installing Power Supply Units
You can replace one power supply unit while the other one provides power to the switch.
Before you begin
If the PSU blank module is inserted, remove it as follows:
1.
Grasp both the power supply unit handle and release latch with one hand and squeeze the release latch
towards the handle.
2.
Gently pull the power supply unit blank module out of the bay.
Step 1
Holding the power supply unit with one hand underneath it and the other hand holding the handle, turn the power supply
unit so that its release latch is on the right side, and align the back end of the power supply unit (the end with the electrical
connections) to the open power supply unit slot. Carefully slide the power supply unit all the way into the slot until it
clicks into place.
If the power supply unit does not fit into the slot opening, turn the unit over and try again.
Note
Step 2
Test the installation by trying to pull the power supply unit out of the slot by the handle, without using the release latch.
If the power supply unit does not move out of place, it is secured in the slot. If the power supply unit moves, carefully
press it all the way into the slot until it clicks in place.
Removing Power Supply Units
You can remove one faulty power supply unit, while the other one provides enough power to the switch.
Install a new power supply unit or a power supply unit blank module in the open slot.
Step 1
Disconnect the power cable. For more information, see
.
Step 2
Grasp the power supply unit handle and release latch with one hand and squeeze the release latch towards the handle.
Step 3
Place your other hand under the power supply unit to support it while you slide it out of the chassis.
Do not touch the electrical connectors on the back side of the unit and prevent anything else from coming into
contact with and damaging the connectors.
Caution
Step 4
Insert a power supply unit blank module:
a) Grasp the power supply unit blank module handle and release latch with one hand and squeeze the release latch
towards the handle.
Installing the Cisco MDS 9220i Switch
17
Installing the Cisco MDS 9220i Switch
Installing and Removing Power Supply Units
