CHAPTER 25
Replacing Chassis Components
•
Replacing a T640 Craft Interface on page 265
•
Replacing the T640 CIP on page 267
•
Replacing the T640 Alarm Relay Wires on page 270
•
Replacing the T640 Console or Auxiliary Cable on page 273
•
Replacing the T640 Management Ethernet Cable on page 275
•
Replacing a T640 SCG on page 277
Replacing a T640 Craft Interface
The craft interface is hot-insertable and hot-removable. When you install the craft
interface, allow several minutes for the display to reflect the current state of the router.
Before you remove the craft interface, remove the front upper fan tray. For instructions
on removing a front fan tray, see“Removing the T640 Standard or Quiet Front Fan Trays”
on page 187.
1.
Removing a T640 Craft Interface on page 265
2.
Installing a T640 Craft Interface on page 266
Removing a T640 Craft Interface
The craft interface is located on the front of the chassis above the FPC card cage and
weighs approximately 2 lb (0.9 kg). To remove the craft interface (see
Figure 115 on page 266):
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.
3. Insert the blade of a flat-blade screwdriver into the slot on one side of the craft
interface, and then gently pry that side out from the chassis.
265Copyright © 2017, Juniper Networks, Inc.
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