Figure 82: Removing A Cb - Juniper M320 Hardware Manual

M320 Router Hardware Guide
164
To remove a CB, (see Figure 82 on page 164):
Take the host subsystem offline.
1.
CAUTION:
Before you replace a CB, you must take the host subsytem offline:
Before taking the host subystem offline, switch the Routing Engine to
be the backup if the CB to be replaced is associated with the Routing
Engine currently functioning as the master Routing engine.
Taking the host subsystem offline includes both the Routing Engine and
CB. If there is only one host subsystem, taking the host subsystem offline
shuts down the router.
See "Taking the M320 Host Subsystem Offline" on page 160.
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.
If applicable, disconnect the cables plugged into the ports labeled
4.
.
INPUTS
Loosen the captive screws (using a Phillips (+) screwdriver, number 2) on the ejector
5.
handles on both sides of the CB faceplate.
Flip the ejector handles outward to unseat the CB.
6.
Grasp the ejector handles, and slide the CB about halfway out of the chassis.
7.
Place one hand underneath the CB to support it, and slide it completely out of the
8.
chassis.
Place the CB on the antistatic mat.
9.
If you are not replacing the CB now, install a blank panel over the empty slot.
10.

Figure 82: Removing a CB

EXTERNAL CLOCK
Copyright © 2010, Juniper Networks, Inc.