Juniper MX480, Hardware Manual

Page: 318 / 420

Maintaining the MX480 Power Supplies
Purpose For optimum router performance, verify the condition of the power supplies.
Action On a regular basis:
• PEM 0 status:
State Online
Temperature OK
AC Input: OK
DC Output Voltage(V) Current(A) Power(W) Load(%)
59 0 0 0
PEM 1 status:
State Online
Temperature OK
AC Input: OK
DC Output Voltage(V) Current(A) Power(W) Load(%)
59 18 1062 42
•
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.
See Also Power Supply LEDs on the MX480 Craft Interface on page 39
•
•
MX480 AC Power Supply Description on page 45
•
MX480 DC Power Supply Description on page 53
•
Troubleshooting Resources for MX480 Routers on page 353
•
MX480 Site Preparation Checklist on page 139
Replacing an MX480 AC Power Supply
1.
Removing an MX480 AC Power Supply on page 319
2.
Installing an MX480 AC Power Supply on page 320
Copyright © 2019, Juniper Networks, Inc. 318
MX480 Universal Routing Platform Hardware Guide