• PEM 0 status:
State Online
Temperature OK
DC output OK
PEM 2 status:
State Online
Temperature OK
DC output OK
• Make sure that the power and grounding cables are arranged so that they do not
obstruct access to other router components.
• Routinely check the status LEDs on the power supply faceplates and the craft interface
to determine if the power supplies are functioning normally.
• Check the red and yellow alarm LEDs on the craft interface. Power supply failure or
removal triggers an alarm that causes one or both of the LEDs to light. You can display
the associated error messages by issuing the following command:
user@host> show chassis alarms
• Periodically inspect the site to ensure that the grounding and power cables connected
to the router are securely in place and that there is no moisture accumulating near the
router.
Related
Documentation
• Power Supply LEDs on the MX240 Craft Interface on page 15
• MX240 AC Power Supply Description on page 90
• MX240 DC Power Supply Description on page 92
• MX240 Site Preparation Checklist on page 111
• Troubleshooting Resources for MX240 Routers on page 401
397Copyright © 2017, Juniper Networks, Inc.
Chapter 29: Maintaining Components
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