Juniper Networks MX480 - Manual (Page 208)

10. You can delete that command by issuing the delete chassis state cb-upgrade command
and then the commit command.
11. Verify the SCBs before you finish by issuing the show chassis hardware command:
user@host> show chassis hardware
Item Version Part Number Serial Number Description
CB0 REV 02 750-031391 YE8505 Enhanced MX SCB
CB1 REV 07 710-031391 YL6769 Enhanced MX SCB
You can see that the MX480 now has enhanced SCBs.
Related
Documentation
Operating and Positioning the MX480 SCB Ejectors on page 173 •
• Effect of Taking the MX480 Host Subsystem Offline on page 170
• Taking an MX480 Host Subsystem Offline on page 172
• Preventing Electrostatic Discharge Damage to an MX480 Router on page 248
Replacing an MX480 Routing Engine
1. Removing an MX480 Routing Engine on page 184
2. Installing an MX480 Routing Engine on page 185
Removing an MX480 Routing Engine
Before you remove a Routing Engine, remove the cables that connect to it.
CAUTION: Before you replace a Routing Engine, you must take the host
subsystem offline. If there is only one host subsystem, taking the host
subsystem offline shuts down the router.
CAUTION: If the Routing Engine to be replaced is currently functioning as
the master Routing engine, switch it to be the backup before removing it.
To remove a Routing Engine from an SCB (see Figure 89 on page 185 ):
1. Take the Routing Engine offline gracefully.
2. Place an electrostatic bag or antistatic mat on a flat, stable surface.
3. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
the strap to one of the ESD points on the chassis.
4. Verify that the Routing Engine LEDs are off.
5. Loosen the captive screws on the left and right of the Routing Engine.
6. Flip the ejector handles outward to unseat the Routing Engine.
Copyright © 2013, Juniper Networks, Inc. 184
MX480 3D Universal Edge Router Hardware Guide