Replacing the Craft Interface

The craft interface is hot-removable and hot-insertable. You can remove and replace it without powering down the router or disrupting routing functions.

Note: The M5 and M10 router craft interface is a part of the router chassis. You cannot remove it.

To replace the craft interface:

1. Replacing the M20 Router Craft Interface
2. Replacing the M40 Router Craft Interface
3. Replacing the M40e and M160 Router Craft Interface
4. Replacing the M120 Router Craft Interface
5. Replacing the M320 Router Craft Interface
6. Replacing the T320, T640, and T1600 Router Craft Interface
7. Replacing the TX Matrix and TX Matrix Plus Craft Interface

Replacing the M20 Router Craft Interface

To remove the M20 router craft interface:

1. Attach an electrostatic discharge (ESD) strap to your bare wrist, and connect the strap to one of the two ESD points on the chassis.
2. Unscrew the thumbscrews on the left and right sides of the card carrier to unseat the craft interface from the midplane.
3. Flip the ends of the two extractor clips, which are adjacent to the thumbscrews, toward the outside edges of the router.
4. Grasp both sides of the craft interface and slide it about three-quarters of the way out of the router.
5. Move one of your hands underneath the craft interface to support it, and slide the craft interface completely out of the chassis.

Replacing the M40 Router Craft Interface

The craft interface is attached to the lower impeller tray.

1. Attach an ESD strap to your bare wrist, and connect the strap to one of the two ESD points on the chassis.
2. Unscrew the three screws at the bottom edge of the lower impeller tray.
3. Grasp the sides of the lower impeller tray and slide it out of the chassis. (See Figure 1.)

Figure 1: Removing the Lower Impeller Tray

Replacing the M40e and M160 Router Craft Interface

The craft interface is attached to the upper impeller assembly (front top blower).

1. Attach an ESD strap to your bare wrist, and connect the strap to one of the two ESD points on the chassis.
2. Unscrew the captive screws at the corners of the impeller assembly (the craft interface).
3. Grasp the impeller assembly and pull it halfway out of the chassis. (See Figure 2.)

   Caution: If the impeller is still spinning, do not put your fingers or any tool into the impeller assembly as you pull it out. To avoid injury, wait until the impeller stops spinning before removing the assembly.

Figure 2: Removing the Front Upper Impeller Assembly

4. Pull the impeller assembly completely out of the chassis.
5. Place the assembly top-side down (the lettering on the craft interface is upside down) on an antistatic mat on a flat, stable surface.
6. Using a Phillips screwdriver, loosen and remove the four screws that secure the bottom of the craft interface housing to the impeller assembly.
7. Turn the impeller assembly over so that the lettering on the craft interface is right side up.
8. Using a Phillips screwdriver, loosen and remove the four screws that secure the top of the craft interface housing to the impeller assembly.
9. Using a Phillips screwdriver, loosen and remove the screws located on the rear side of the craft interface at the side. There are two screws at each side, located near the holes for the captive screws that secure the impeller assembly to the chassis.
10. Grasp the sides of the craft interface and pull it straight off the front of the impeller assembly.

Replacing the M120 Router Craft Interface

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

To remove the craft interface:

Note: Removing the front upper fan tray before you remove the craft interface makes it easier to grasp the craft interface as you remove it. For instructions on removing a front fan tray, see the appropriate router hardware guide.

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. With a 3/8-inch nut driver or pliers, loosen and remove the two nuts that secure the craft interface to the chassis. Also remove the two washers located behind the nuts.
3. Grasp the craft interface by the left and right flanges and carefully pull it straight out of the chassis.

Figure 3: Removing the M120 Craft Interface

Replacing the M320 Router Craft Interface

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

To remove the craft interface:

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 the appropriate router hardware guide.

1. Attach an ESD 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. (See Figure 4.)

Figure 4: Removing the M320 Router Craft Interface

Replacing the T320, T640, and T1600 Router Craft Interface

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

To remove the craft interface:

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 the appropriate router hardware guide.

1. Attach an ESD strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
2. Completely loosen the screws at the four corners of the craft interface.
3. Insert the blade of a flat-blade screwdriver into the slot on one side of the craft interface, then gently pry that side out from the chassis.
4. Repeat Step 3 for the other side of the craft interface.
5. Grasp the craft interface by the top and bottom edges and carefully pull it straight out of the chassis.

Replacing the TX Matrix and TX Matrix Plus Craft Interface

The craft interface is located on the front of the chassis above the upper fan tray.

To remove the craft interface:

Note: Removing the front air filter might make it easier to grasp the craft interface. For instructions, see the appropriate router hardware guide.

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. Completely loosen the screws at the four corners of the craft interface using a Phillips (+) screwdriver, number 1.
3. Grasp the craft interface by the top and bottom edges and carefully pull it straight out of the chassis (see Figure 5 for TX Matrix Router and Figure 6 and TX Matrix Plus Router).

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

Figure 5: Removing the TX Matrix Router Craft Interface

Figure 6: Removing the TX Matrix Plus Router Craft Interface