Troubleshooting The Mx960 Power System - Juniper MX960 Hardware Manual

MX960 3D Universal Edge Router Hardware Guide
Related
Documentation

Troubleshooting the MX960 Power System

Problem
Solution
498
Uptime:
Max Power Consumption
For further description of the output from the commands, see the Junos OS
Administration Library.
MX960 Modular Port Concentrator Description on page 89
Maintaining MX960 MPCs on page 463
Replacing an MX960 MPC on page 376
Description: The power system is not functioning normally.
Check the LEDs on each power supply faceplate.
If an AC power supply is correctly installed and functioning normally, the
LED's light steadily, and the
DC OK
If a DC power supply is correctly installed and functioning normally, the
, and
INPUT OK BREAKER ON
Issue the CLI
show chassis environment pem
power supply modules. As shown in the sample output, the value
labeled indicates that each power supply is functioning normally:
State
user@host> show chassis environment pem
PEM 0 status:
State
Temperature
DC output
PEM 1 status:
State
Temperature
DC output
If a power supply is not functioning normally, perform the following steps to diagnose
and correct the problem:
If a red alarm condition occurs, issue the
the source of the problem.
Check that the AC input switch (
that the power supply is receiving power.
Verify that the source circuit breaker has the proper current rating. Each power supply
must be connected to a separate source circuit breaker.
Verify that the AC power cord or DC power cables from the power source to the router
are not damaged. If the insulation is cracked or broken, immediately replace the cord
or cable.
15 hours, 2 minutes, 47 seconds
440 Watts
LED is not lit.
PS FAIL
LED's light steadily.
command to check the status of installed
Online
OK
OK
Online
OK
OK
show chassis alarms
— ) or DC circuit breaker (
Copyright © 2017, Juniper Networks, Inc.
and
AC OK
PWR_OK ,
Online in the rows
command to determine
| ) is in the on position and