Juniper M Series User Manual

Table 100: Checklist for Monitoring the Control Board (continued)
Command or ActionMonitor the Control Board Tasks
Look at the LEDs on the Control Board
faceplate.
2. Check the Control Board LEDs on
page 391
show log messages | match cb3. Display Control Board Error Messages
in the System Log File on page 392
show log chassisd | match cb4. Display Control Board Error Messages
in the Chassis Daemon Log File on
page 392
“Verify Control Board Failure” on page 393
1. Make sure that the Control Board is
properly seated in the midplane.
2. Ensure that none of the pins are bent.
3. Check the thumbscrews on the ejector
locking tabs.
1. Check the Control Board Connection
on page 393
The fuses for the Control Boards are located
in the rear of the midplane behind the power
supply in slot PEM0.
2. Check the Control Board Fuses on
page 393
1. Take the host subsystem offline if the
Control Board is master.
2. Replace the Control Board with one that
you know works.
3. Bring the Control Board online.
4. Check the Control Board status.
3. Perform a Control Board Swap Test
on page 394
show chassis hardware4. Display the Control Board Hardware
Information on page 395
Look on the bottom of the left side of the
Control Board.
5. Locate the Control Board Serial
Number ID Label on page 396
Follow the procedure in the appropriate
hardware guide.
“Return the Control Board” on page399
Related
Documentation
Control Board Overview on page 383•
Understanding the Control Board
•
Control Board Overview on page 383
•
M320 Router Control Board on page 383
•
T320 Router Control Board on page 383
•
T640 Router Control Board on page 384
Copyright © 2012, Juniper Networks, Inc.382
M Series and T Series Routers Monitoring and Troubleshooting Guide

Juniper M Series Specifications

General

Brand	Juniper
Model	M Series
Category	Network Router
Language	English