Removing an M7i AC Power Supply

Before removing the AC power supply from an M7i router with only one power supply, you must power off the router. See Powering Off the M7i Router. The AC power supplies are located at the bottom rear of the chassis, as shown in M7i Chassis Description. Each AC power supply weighs approximately 12 lb (5.5 kg).

Caution: Do not leave a power supply slot empty for more than a short time while the router is operational. The power supply must remain in the chassis for proper airflow.

To remove an AC power supply (see Figure 1):

1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. Verify that the router is attached to a proper earth ground.
2. Press the power switch on the power supply faceplate to the OFF (O) position.

   Note: If you are not removing the power supply, but simply powering it off, wait at least 60 seconds before turning it back on. If you need to power it off again, wait for at least 60 seconds after powering it on.

3. Unplug the power cord from the appliance inlet on the faceplate.
4. Loosen the thumbscrew at each corner of the power supply faceplate, using a Phillips screwdriver if necessary.
5. Grasp the handle on the power supply faceplate and pull firmly to slide the unit about halfway out of the chassis.
6. Place one hand under the power supply to support it, then slide it completely out of the chassis.

Figure 1: Removing an AC Power Supply