Maintaining The Mx240 Power Supplies; Replacing An Mx240 Ac Normal-Capacity Power Supply - Juniper MX240 Hardware Manual

Maintaining the MX240 Power Supplies

Purpose
Action
See Also

Replacing an MX240 AC Normal-Capacity Power Supply

Copyright © 2019, Juniper Networks, Inc.
Replacing an MX240 AC Power Supply Cord on page 314
Replacing an MX240 DC Normal-Capacity Power Supply on page 315
Replacing an MX240 DC Power Supply Cable on page 320
For optimum router performance, verify the condition of the power supplies.
On a regular basis:
PEM 0 status:
State
Temperature
DC output
PEM 2 status:
State
Temperature
DC output
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.
MX240 Component LEDs on the Craft Interface on page 36
MX240 AC Power Supply Description on page 42
MX240 DC Power Supply Description on page 48
MX240 Site Preparation Checklist on page 141
Troubleshooting the MX240 Components on page 347
Removing an MX240 AC Normal-Capacity Power Supply on page 312
1.
Installing an MX240 AC Normal-Capacity Power Supply on page 313
2.
Chapter 4: Maintaining, Installing and Replacing Components
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