• Supported Platforms
• T640 Routers

• Related Topics
• T640 Chassis Description
• T640 Switch Interface Boards (SIBs) Description
• Maintaining the T640 SIBs

Removing a T640-SIB

To remove a T640-SIB (see Removing a T640 Standard SIB or Standard SIB Version B):

1. Have ready a replacement SIB or blank panel, an antistatic mat, and one dust cover for the fiber-optic array cable connector you remove from the T640-SIB.
2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to an approved site ESD grounding point. See the instructions for your site. For more information about ESD, see T640 Preventing Electrostatic Discharge Damage.
3. Ensure that the fiber-optic array cable connectors plugged into the T640-SIB are labeled so you can reconnect them correctly.
4. Use one of the following methods to take the T640-SIB offline:
   • Issue the following CLI command:
     
     

     user@host> request chassis sib lcc number offline slot slot-number

     For more information about the command, see the Junos System Basics and Services Command Reference.

   • Press and hold the online/offline button on the craft interface that corresponds to the T640-SIB. Hold the button down until all of the LEDs surrounding the button are not lit.

5. Remove the fiber-optic array cable connector from the fiber-optic array on the faceplate of theT640-SIB.

   Warning: Do not look directly into a connector at the end of a fiber-optic adapter orfiber-optic array cable connector attached to an adapter. The fiber optics emit laser light that can damage your eyes.

6. Install a dust cover on the cable connector you removed from the T640-SIB. Align the dust cover with the cable connector and carefully press them together until they stop. The cover and the cable connector are keyed to ensure proper mating. Secure the dust cover by tightening the thumbscrew and captive screw on the connector. (Use the supplied small slotted screwdriver to tighten the captive screw.)
7. Move the fiber-optic array cables to the side of the T640-SIB so they do not interfere with the removal of the T640-SIB.
8. Simultaneously turn both ejector handles on the top and bottom of the faceplate counterclockwise to unseat the T640-SIB.
9. Grasp both ejector handles, pull firmly, and slide the T640-SIB about three-quarters of the way out of the chassis.
10. Place one hand underneath the T640-SIB to support it and slide it completely out of the chassis. Place it on the antistatic mat.

    Caution: Do not stack hardware components on one another after you remove them. Place each component on an antistatic mat resting on a stable, flat surface.

11. If you are not reinstalling a SIB into the emptied SIB slot within a short time, install a blank SIB panel over the slot to maintain proper airflow in the SIB card cage.