• Supported Platforms
• T640 Routers

• Related Topics
• Maintaining the T640 Host Subsystem
• T640 Routing Engine Functions
• T640 Routing Engine Interface Cable and Wire Specifications

Replacing a T640 PC Card

A slot labeled PC CARD on the Routing Engine faceplate accepts a Type I PC Card, as defined in the PC Card Standard published by the Personal Computer Memory Card International Association (PCMCIA). The router is shipped with a PC Card that contains Junos OS. The PC Card can be used to copy Junos OS from the PC Card onto the Routing Engine. You can also copy Junos OS from the Routing Engine onto a PC Card, for example, to create a backup copy of upgrade software that you have obtained from Juniper Networks. Instructions for copying software to a PC Card are available at the Juniper Networks Support Web site (http://www.juniper.net/support/). After logging in, navigate to the Customer Support Center, then to the download page for Junos OS.

Note: The software on a PC Card is loaded only onto the Routing Engine into which the PC Card is inserted. It is not automatically copied to the other Routing Engine.

To replace a PC Card, perform the following procedures:

Removing a T640 PC Card

The PC Card is located in the slot labeled PC CARD on the Routing Engine. To remove the PC Card (see Figure 1):

1. Place an electrostatic bag or antistatic mat on a flat, stable surface.
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. For more information about ESD, see T640 Preventing Electrostatic Discharge Damage.
3. Remove the Routing Engine cover by loosening the captive screws on the corners of its faceplate.
4. On the Routing Engine faceplate, press the eject button on the right side of the PC Card slot once to release the button. Press again to release the PC Card.

   Note: The Routing Engine in your router might have two PC Card slots. In this case, use either slot. Do not install more than one PC Card in the Routing Engine.

5. The PC Card pops partially out of the slot. Grasp the card and pull it completely out of the slot.
6. Place the PC Card on the antistatic mat.
7. If you are not replacing the PC Card now, reinstall the Routing Engine cover and tighten the screws on the corners of the cover to secure it to the chassis.

Installing a T640 PC Card

To install a PC Card (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. For more information about ESD, see T640 Preventing Electrostatic Discharge Damage.
2. If the Routing Engine cover is in place, remove the cover by loosening the captive screws on the corners of its faceplate.
3. Insert the PC Card into the PC Card slot on the Routing Engine, with the Juniper Networks logo facing downward.

   Caution: Be sure to insert the PC Card with the label facing downward. Inserting the PC Card incorrectly might damage the Routing Engine.

   Note: The Routing Engine in your router might have two PC Card slots. In this case, use either slot. Do not install more than one PC Card in the Routing Engine.

4. Press the card firmly all the way into the slot.
5. Reinstall the Routing Engine cover and tighten the screws on the corners of the cover to secure it to the chassis.