Replacing the M7i Fan Tray

Removing the M7i Fan Tray

The fan tray is located on the back of the chassis. It weighs approximately 1.6 lb (0.7 kg).

To remove the fan tray (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. Loosen the thumbscrew securing the fan tray, using a Phillips screwdriver if necessary.
3. Grasp the handle on the fan tray and pull firmly to slide it halfway out of the chassis.

   Caution: To avoid injury, do not touch the fans with your fingers or any tool as you slide the fan tray out of the chassis—they might still be spinning.

4. When the fans are no longer spinning, slide the fan tray completely out of the chassis.

Figure 1: Removing the Fan Tray

Installing the M7i Fan Tray

To install the fan tray (see Figure 2):

Caution: When sliding the fan tray into the chassis, make sure your fingers are not near the fans, which start spinning as soon as the fan tray contacts the midplane.

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. Grasp the sides of the fan tray and align the rear of the tray with the guides inside the chassis.
3. Slide the fan tray all the way into the chassis.

   Note: Use the fan tray handle to slide the fan tray into the chassis. Do not push on the fan tray faceplate.

4. Tighten the thumbscrew on the fan tray.

Figure 2: Installing the Fan Tray