Installing the Interface Line and PIC Cards

Installing PICs in the Cisco cBR Chassis


Warning

If you are adding more interface line cards or upgrading the existing line cards, ensure that the power modules installed in the chassis are adequate to support the line cards.


Perform this procedure to install the following PICs:
  • RF Through PIC

  • RF Protect PIC

  • RF PIC Blank card

  • Digital Through PIC

  • Digital PIC Blank card

To use the RF HA features, install the Protect PIC.

When HA must be configured, ensure that the Protect or Through PICs are installed in consecutive slots, with the Protect PIC being installed in the uppermost PIC slot.

Caution

Do not leave a PIC slot empty in order to avoid critical thermal alarms relating to overheating of individual components.

Do not install any Blank PICs between any two Through PICs or between an Protect PIC and Through PIC.


Before you begin

  • If high availability (HA) configuration is required, install an RF Protect PIC in the uppermost PIC slot.

  • Be aware of the weight and size of the equipment. Handle it with care.

  • Attach an ESD-preventive wrist strap to your wrist and connect the other end to the grounding lug connected to the chassis.

Required Tools and Equipment

  • ESD-preventive wrist strap

  • 3/16" flat-blade torque screwdriver

  • RF Through PIC or RF Protect PIC or RF PIC Blank card or Digital Through PIC or Digital Protect PIC or Digital PIC Blank Card

Procedure


Step 1

Grasp the faceplate of the PIC with one hand and place your other hand under the PIC to support its weight.

Step 2

Carefully align the PIC with the plastic guides in the slot.

Step 3

Slide the PIC into the slot applying even pressure using both your hands until it is within an inch of full insertion.

Step 4

Open the ejector levers on the PIC and fully insert the PIC into the slot applying even pressure on both sides until it mates with the midplane connectors.

Caution 

To prevent damage to the midplane connector, do not use excessive force when inserting the card into the slot.

Note 

While installing a PIC Blank card, open the ejector levers and fully insert the PIC blank into the slot until the ejectors touch the chassis flanges.

Figure 1. Opening the Ejector Levers on the PIC


Figure 2. Inserting the PIC


Step 5

Simultaneously pivot both the ejector levers towards each other until they cannot be pivoted any further.

Figure 3. Closing the Ejector Levers on the PIC


Step 6

Tighten the two captive screws using a 3/16" flat-blade torque screwdriver with a torque of 6-8 lb-in (0.68 Nm to 0.90 Nm) to secure the PIC.


What to do next

Installing the Interface Line Card in the Cisco cBR Chassis

Repeat this procedure for all the interface line cards and the line card blanks that you must install in the unused line card slots.


Warning

If you are adding more interface line cards or upgrading the existing line cards, ensure that the power modules installed in the chassis are adequate to support the line cards.


Before you begin

  • Attach an ESD-preventive wrist strap to your wrist and connect the other end to the grounding lug connected to the chassis.

  • Install the corresponding PIC.

  • Be aware of the weight and size of the equipment. Handle it with care.

Restrictions

  • Install the interface line card in the slot corresponding to the RF/Digital Protect or RF/Digital Through PIC installed.

Required Tools and Equipment

  • ESD-preventive wrist strap
  • 3/16" flat-blade torque screwdriver
  • One of the following SSI Cards (line cards):
    • DOCSIS 3.0 MAC/PHY line card [PID: CBR-LC-8D30-16U30]

    • DOCSIS 3.1 MAC/PHY line card [PID: CBR-LC-8D31-16U31]

    • DOCSIS MAC line card (40G) [PID: cBR-CCAP-LC-40G]

    • DOCSIS MAC line card (80G) [PID: cBR-CCAP-LC-80G]

    • Line card blank. [PID: CBR-LC-BLANK]

Procedure


Step 1

Loosen the captive screws on the appropriate slot using a 3/16" flat-blade torque screwdriver until the red bands are visible on the captive screws.

Note 

Ensure that the red band on the screws are visible.

Figure 4. Red Band on the Screw


Step 2

Pull the spring-loaded ejectors on the card until they release and are perpendicular to the faceplate.

Figure 5. Opening the Spring-Loaded Ejectors on the Interface Line Card


Step 3

Grasp the faceplate of the card with one hand and place your other hand under the card to support its weight.

Step 4

Carefully align the support rails on the card with the rails in the appropriate slot.

Step 5

Slide and push the card into the slot applying even pressure using both your hands until it mates with its midplane connectors.

Caution 

To prevent damage to the midplane connector, do not use excessive force when inserting the card into the slot.

Figure 6. Inserting the Interface Line Card into the Chassis


Step 6

Simultaneously pivot both the spring-loaded ejectors towards the faceplate until they make contact with the faceplate.

Figure 7. Closing the Spring-Loaded Ejectors on the Interface Line Card


Figure 8. Closed and Secured Spring-Loaded Ejectors on the Interface Line Card


Step 7

Tighten the two captive screws using a 3/16" flat-blade torque screwdriver with a torque of 10-12 lb-in (1.12-1.36 Nm) to secure the card.


What to do next

A line card may be installed in the chassis during the OIR process for the following reasons:

  • As a replacement.
  • As an upgrade.
  • After the downstream or upstream PHY module was replaced or upgraded.

When a line card is installed in the chassis for any of the above-stated reasons, use the hw-module slot reload command to reload the line card.

Using UCH.8 Connectors on the RF Through PIC

The faceplate of the RF Through PIC card has one downstream port cluster and two upstream port clusters. Three cable assemblies with UCH.8 connectors are used, one for each cluster, to connect the RF/Digital Through PIC.

Connect the cable assemblies in the following order:

  1. Red cable assembly to the downstream port cluster.

  2. One blue cable assembly to upstream port cluster with the ports US0 to US7.

  3. Other blue cable assembly to upstream port cluster with the ports US8 to US15.

The following steps describe how to connect one UCH.8 connector. Repeat the procedure to connect all the three UCH.8 connectors.

Before you begin

Required Tools and Equipment

  • ESD-preventive wrist strap.
  • 3/16" flat-blade torque screwdriver.
  • Cable Bundle containing the following cable assemblies:

    • One cable assembly with red colored cables connected to one UCH.8 connector.

    • Two cable assemblies with blue colored cables connected to one UCH.8 connector each.

Procedure


Step 1

Align the small and large guide pins in the UCH.8 connector with the small and large guide pin holes on the PIC.

Figure 9. UCH.8 Connector


1

Downstream port cluster with ports DS0 to DS7

4

Small guide pin

2

UCH.8 connector

5

Lead screw

3

Large guide pins

Step 2

Insert the guide pins of the UCH.8 connector into the guide pin holes in the PIC.

Step 3

Hold the UCH.8 connector in place and tighten the lead screw using the 3/16" flat-head torque screwdriver, with a torque of 10-12 in-lbs.


What to do next

Route the cable bundle through the corresponding slot in the RF cable management brackets attached to the side of the chassis.

After each UCH.8 connector has been installed on the RF/Digital Through PIC port, push the cable assembly into the corresponding cable management bracket attached to the side of the chassis.