Replacing a TX-CIP
The TX-CIP is located to the left side of the TX-SIB card cage. The TX-CIP is hot-removable and hot-insertable. It weighs approximately 8 lb (3.6 kg). When the TX-CIP is removed, the backup TX-CIP provides redundant connections to the active host subsystem in the TX Matrix router and the active T-CBs in the T640 routers.
![]() | Note: If you are replacing a TX-CIP in an operational TX Matrix router, the TX Matrix router and each T640 router in the routing matrix must have redundant host subsystems. |
Removing a TX-CIP
To remove a TX-CIP (see Figure 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.
- Label each cable with its corresponding port name—for example, LCC0, ETHERNET, CONSOLE, and RED ALARM.
- Disconnect all cables connected to the TX-CIP. For instructions, see Replacing a TX Matrix Console or Auxiliary Cable or Replacing a TX Matrix Management Ethernet Cable.
- Loosen the captive screws at the top and bottom of the TX-CIP faceplate.
- Grasp the handle on the TX-CIP faceplate and carefully
pull the TX-CIP straight out of the chassis.

Caution: Be sure to slide the TX-CIP straight within the slot to avoid damaging the connector pins on the front of the midplane.
Figure 1: Removing a TX-CIP

Installing a TX-CIP
To install a TX-CIP (see Figure 2):
- Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
- Grasp the TX-CIP handle with one hand and hold
the bottom edge of the TX-CIP with the other hand to support its weight.

Note: The components on the TX-CIP are on the left side of the board, unlike the components of a TX-SIB, which are on the right side. Verify that the components are on the left before inserting the TX-CIP.
- Insert the TX-CIP into its chassis slot, carefully aligning the top and bottom of the TX-CIP with the guides in the card cage.
- Carefully push the TX-CIP straight into the chassis
until it contacts the midplane.

Caution: Be sure to slide the TX-CIP straight within the slot to avoid damaging the connector pins on the front of the midplane.
- Tighten the screws at the top and bottom of the TX-CIP faceplate.
- Using the labels to assist you, reattach all cables to the TX-CIP.
- To verify that the TX-CIP is installed correctly, plug an Ethernet cable into the ETHERNET port on the TX-CIP. If the host module is operational, the ACT LED blinks to indicate Ethernet activity. If you can run the CLI from a management device attached to the TX-CIP, the TX-CIP is installed correctly.
Figure 2: Installing a TX-CIP

