Juniper MX2008 Hardware Manual page 510

NOTE: Changing the DIP switch position does not impact traffic. However, it is always
recommended to do so in a maintenance window.
If you cannot determine the cause of the problem or need additional assistance, see Contacting Customer
Support.
SEE ALSO
MX2000 Three-Phase Delta and Wye AC Power Distribution Module LEDs
MX2010 Craft Interface Description
MX2020 Craft Interface Description
MX2010 Troubleshooting Resources
MX2020 Troubleshooting Resources
Troubleshooting the MX2008 Host Subsystems
Problem
Description: The following alarms and LEDs indicate a problem with a host subsystem Routing and Control
Board (RCB):
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 RCB.
2. Check the LEDs on the craft interface.
3. Use the CLI to check the alarms.
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