Replacing an M320 Craft Interface

1. Removing an M320 Craft Interface
2. Installing an M320 Craft Interface

Removing an M320 Craft Interface

The craft interface is located on the front of the chassis above the FPC card cage.

The craft interface is hot-insertable and hot-removable. The craft interface weighs approximately 2 lb (0.9 kg). When you install the craft interface, allow several minutes for the display to reflect the current state of the router.

To remove the craft interface (see Figure 1):

Note: Removing the front upper fan tray before you remove the craft interface might make it easier to grasp the craft interface as you remove it. For instructions on removing a front fan tray, see Removing an M320 Front Fan Tray.

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.
2. Remove the upper cable guards by loosening the three captive screws on each cable guard.
3. Completely loosen the four captive screws that attach the craft interface to the chassis.
4. Grasp the craft interface by the left and right flanges and carefully pull it straight out of the chassis.

Figure 1: Removing the Craft Interface

Installing an M320 Craft Interface

To install the craft interface (see Figure 2):

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.
2. Grasping the craft interface by the left and right flanges, press it into place.
3. Tighten the four captive screws to attach the craft interface to the chassis.

   Note: When you install the craft interface in an operating router, allow several minutes for the LEDs on the craft interface to reflect the current state of the router.

4. Place one of the upper cable guards over one of the front-mounting flanges of the chassis, aligning the top of the cable guard with the top of the flange. Each of the three captive screws on the guard should be aligned with a corresponding standoff on the flange.
5. Tighten each of the three captive screws partway on the cable guard.
6. Tighten each of the three captive screws completely.

Figure 2: Installing the Craft Interface