Installing or Replacing an AC Power Supply
Procedure
Step 1 Turn off the power at its source.
Step 2 Remove the power cord from the power cord retainer.
Step 3 Remove the power cord from the power connector.
Step 4 Press the release latch at the right side of the power supply module inward and slide the power supply out.
Do not leave the power-supply slot open for more than 90 seconds while the switch is operating.
Note
This unit might have more than one power supply connection. All connections must be removed to
de-energize the unit. Statement 1028
Warning
Step 5 Insert the new power supply into the power-supply slot, and gently push it into the slot. When correctly
inserted, the 250-W and 640-W power supplies (excluding the power cord retainer) are flush with the switch
rear panel. The 1025-W power-supply module extends inches from the switch rear panel.
Figure 5: Inserting the AC-Power Supply in the Switch
Step 6 (Optional) Make a loop in the power cord and thread it through the power cord retainer.
Figure 6: AC-Power Supply with Power Cord Retainer
Step 7 Connect the power cord to the power supply and to an AC power outlet. Turn on the power at the power
source.
Step 8 Confirm that the power supply AC OK and PS OK LEDs are green.
Step 9 Repeat the steps to install a second power supply.
Power Supply Installation
5
Power Supply Installation
Installing or Replacing an AC Power Supply
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