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Cisco 6400 Hardware Installation and Maintenance Guide
OL-2133-02
Chapter 5 Maintaining the Cisco 6400
Replacing an AC Power Entry Module
Removing an AC Power Entry Module
If you remove a redundant AC PEM, the chassis continues to operate normally. If you plan to remove
the only operating PEM from a chassis, you must first power down the Cisco 6400 system. Refer to the
procedure in the “Powering Down the System” section on page 5-8.
To remove a PEM from the Cisco 6400 chassis:
Step 1 Turn OFF the power enable switch on the AC PEM you are removing.
Step 2 Unplug the AC power cable.
Step 3 Unscrew the retaining screws on the AC PEM faceplate.
Step 4 Grasp the AC PEM by the handle on the faceplate and pull it out of the chassis.
Caution Always install a filler panel over an empty PEM power bay to protect the connectors from
contamination and to ensure proper air flow.
Installing an AC PEM
Figure 5-36 shows an AC PEM unit being installed in the Cisco 6400 chassis. You can insert a PEM unit
into the Cisco 6400 without powering down the system.
To install an AC PEM in the Cisco 6400 chassis:
Step 1 Ensure that the power enable switch on the AC PEM is turned to Off.
Step 2 Align the PEM and insert it into the power bay.
Step 3 Firmly push the PEM all the way into the power bay to ensure that the power connectors mate.
Step 4 Tighten the captive screws on the faceplate of the PEM to secure the PEM to the chassis.
Step 5 Plug in the AC power cable.
Step 6 Turn the power enable switch on the AC PEM to On. The green POWER LED on the faceplate turns on
to indicate that the AC PEM is providing power to the chassis. The yellow FAULT LED goes out.
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