Removing Power Supply Units; Installing And Removing Fan Modules - Cisco MDS 9000 Series Hardware Installation Manual

Removing Power Supply Units

• There must be an earth ground connection to the chassis to which you are installing the replacement
Step 1 Holding the PSU with one hand underneath it and the other hand holding the handle, turn the PSU so that its release latch
is on the right side, and align the back end (the end with the electrical connections) to the open power supply slot. Carefully
slide the PSU all the way into the slot until it clicks into place.
If the PSU 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 PSU out of the slot without using the release latch.
If the PSU does not move out of place, it is secured in the slot. If the PSU moves, carefully press it all the way into the
slot until it clicks in place.
Step 3
Attach the power cable to the power socket on the front of the PSU.
Step 4 Make sure that the other end of the power cable is attached to the appropriate power feed for the PSU. If the power feed
has a switch, slide it to the On position.
Note Depending on the outlet socket on your power distribution unit, you might need the optional jumper cable to
connect the switch to the outlet socket.
Step 5 Verify that the PSU is operational by making sure that the PSU LEDs are both green. For information on what the PSU
LEDs indicate, see the
Removing Power Supply Units
You can remove one faulty PSU, and the other one will provide enough power to operate the switch.
Step 1
Holding the plug for the power cable, pull the plug out from the power socket on the PSU, and wait until both the PSU
LEDs are off.
Step 2
Grasp the PSU handle while pressing the release latch towards the handle.
Step 3 Place your other hand under the PSU 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
Caution
contact with and damaging the connectors.

Installing and Removing Fan Modules

This section provides instructions for installing and removing the fan modules for the switch.
You can replace one of the four fan modules even when the switch is operating so long as you perform the
replacement within one minute of removing the old fan module. If you cannot perform the replacement within
one minute, leave the original fan module in the chassis to maintain the designed airflow until you have the
replacement fan module on hand and can perform the replacement.
Cisco MDS 9124V-K9 Switch Hardware Installation Guide
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module. Typically, the chassis is grounded by its metal-to-metal connection with a grounded rack. If you
need to ground the chassis, see
LEDs section.
Grounding the Switch.
Installing the Cisco MDS 9124V-K9 Switch