Replacing A T640 Routing Engine; Removing A T640 Routing Engine - Juniper T640 Hardware Manual

Replacing a T640 Routing Engine

Removing a T640 Routing Engine

Copyright © 2017, Juniper Networks, Inc.
Maintaining the T640 Control Boards on page 449
To replace a Routing Engine, perform the following procedures:
Removing a T640 Routing Engine on page 317
1.
Installing a T640 Routing Engine on page 318
2.
The router can have one or two Routing Engines. They are located in the upper rear of
the chassis in the slots marked
2.4 lb (1.1 kg).
To remove a Routing Engine:
Take the host subsystem offline as described in
1.
Offline" on page 307.
CAUTION: Before you replace a Routing Engine, you must take the host
subsystem offline. If the Routing Engine to be replaced is currently
functioning as the master Routing engine, switch it to be the backup before
taking the host subsystem offline. If there is only one host subsystem,
taking the host subsystem offline shuts down the router.
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
3.
the strap to one of the ESD points on the chassis.
Loosen the captive screws on the corners of the Routing Engine cover.
4.
Grasp the Routing Engine cover by its edges, and pull it free from the chassis (see
5.
Figure 153 on page 318).
If applicable, loosen the screws on the extractor handles at either end of the Routing
6.
Engine faceplate, using a Phillips screwdriver.
Press the red tabs on the ejector handles on both sides of the Routing Engine faceplate.
7.
Flip the ejector handles outward to unseat the Routing Engine.
8.
Chapter 27: Replacing Host Subsystem Components
RE0 and RE1 . Each Routing Engine can weigh up to
"Taking the T640 Host Subsystem
317