•
If a DC power supply is correctly installed and functioning normally, the
PWR OK
,
BREAKER ON
, and
INPUT OK
LEDs light steadily.
•
Issue the CLI
show chassis environment pem
command to check the status of installed
power supplies. As shown in the sample output, the value
Online
in the rows labeled
State
indicates that each of the power supplies is functioning normally:
user@host>
show chassis environment pem
State Online
Temperature OK
DC Output Voltage(V) Current(A) Power(W) Load(%)
57 14 798 19
PEM 1 status:
State Online
Temperature OK
DC Output Voltage(V) Current(A) Power(W) Load(%)
57 13 741 18
If a power supply is not functioning normally, perform the following steps to diagnose
and correct the problem:
•
If a major alarm condition occurs, issue the
show chassis alarms
command to determine
the source of the problem.
•
Check that the AC input switch (
—
) or DC circuit breaker (
|
) is in the on position and
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 services
gateway are not damaged. If the insulation is cracked or broken, immediately replace
the cord or cable.
•
Connect the power supply to a different power source with a new power cord or power
cables. If the power supply status LEDs indicate that the power supply is not operating
normally, the power supply is the source of the problem. Replace the power supply
with a spare.
•
If all power supplies have failed, the system temperature might have exceeded the
threshold, causing the system to shut down.
NOTE:
If the system temperature exceeds the threshold, Junos OS shuts
down all power supplies so that no status is displayed.
Junos OS also can shut down one of the power supplies for other reasons.
In this case, the remaining power supplies provide power to the services
gateway, and you can still view the system status through the CLI or display.
235
Copyright © 2017, Juniper Networks, Inc.
Chapter 25: Troubleshooting Components
Summary of Contents for SRX5400
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