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Catalyst 4948E and Catalyst 4948E-F Switch Installation Guide
OL-21561-02
Chapter 4 Removal and Replacement Procedures
Removing and Installing the AC-Input Power Supply
Figure 4-3 Removing and Installing an AC-Input Power Supply
Installing the AC-Input Power Supply
Note If you have a Catalyst 4948E-F switch chassis and you have also installed the optional Panduit ToR
Switch Inlet Duct (model CDE2) to extend the chassis’s air intake, you do not need to remove the air
duct or the switch chassis in order to remove and replace the AC-input power supply. There is adequate
working space within the air duct to perform the removal and replacement steps.
To install an AC-input power supply in the chassis, follow these steps:
Step 1 Remove the new AC-input power supply from its protective packaging and set the packaging aside.
Step 2 Loosen the two captive installation screws and remove the blank faceplate (WS-X4994= for the
Catalyst
4948E or WS-X4994-F= for the Catalyst 4948E-F) covering the empty power supply bay
opening. Save the blank faceplate for possible future use.
Step 3 Verify that the power switch is in the off (0) position on the power supply that you are installing.
Note If the power supply is connected to source AC with the power on/off switch in the on position,
the two LEDs on the power supply faceplate will be lit red. To clear this condition, cycle the
power on/off switch off, then on. The LEDs should then be lit green.
Step 4 Grasp the power supply handle with one hand, and place your other hand underneath the power supply.
Slide the power supply into the power supply bay. Make sure that the power supply is fully seated in the
power supply bay.
Note The AC power supply is equipped with an EMI gasket on the top and the bottom front edge of
the power supply. When sliding the power supply into the power supply bay, be careful not to
damage the EMI gaskets.
278173
INPUT
OK
OUTPUT
OK
PWR - 540 AC
100 - 240 VAC
7 - 3A
50 - 60 Hz
INPUT
OK
OUTPUT
OK
PWR - 540 AC
100 - 240 VAC
7 - 3A
50 - 60 Hz