Troubleshooting The Mx2010 Host Subsystems; Troubleshooting The Mx2000 Router Power System - Juniper MX2010 Hardware Manual

Troubleshooting the MX2010 Host Subsystems

Problem
Description: The following alarms and LEDs indicate a problem with a host subsystem Control Board and
Routing Engine (CB-RE):
A red alarm indicates that the host subsystem has been removed.
The red host subsystem OFFLINE LED on the craft interface is lit.
The green host subsystem ONLINE LED on the craft interface is not lit.
Solution
To troubleshooting the host subsystems:
1. Check the LEDs on the faceplate of each CB-RE.
2. Check the LEDs on the craft interface.
3. Use the CLI to check the alarms.
Issue the show chassis alarms command to view the alarms.
RELATED DOCUMENTATION
MX2000 Host Subsystem CB-RE Description | 51
MX2010 Craft Interface Description | 29

Troubleshooting the MX2000 Router Power System

Problem
Description: The following alarms, LEDs, and other conditions indicate a problem with the AC or DC power
system:
If all AC or DC power supply modules (PSMs) have failed, the system temperature might have exceeded
the threshold, causing the system to shut down. See Step
high-capacity AC or DC PSM after a shut down due to an over-temperature situation.
The yellow PWR OK LED blinks when an AC or a DC PSM is out of the power limit or is in an overcurrent
condition.
The red FAULT LED lights when the PSM is not receiving enough airflow to maintain the proper
temperature.
The red FAULT LED lights when the AC or DC output voltages are not within range.
9 for instructions on how to restart a
709