To restart a high-capacity AC power supply after a shut down due to an
over-temperature situation:
1. Move the power switch on the power supply to the off (o) position.
2. Turn off power to where the AC line goes into the power distribution module (PDM)
area.
3. Wait for the power supply LEDs to fade out and for the fans inside the power supply
to shutdown. This can take up to 10 seconds.
CAUTION: Do not attempt to power-on the power supply if the LED is
still lit and the fan is still running. If you do, the router will not reboot.
4. Turn on power to where the AC line goes into the power distribution module (PDM)
area.
5. Move the power switch on the power supply to the on (|) position.
6. Verify that the LEDs on the power supply faceplate are properly lit.
7. Issue the CLI show chassis environment pem command and verify the State is ONLINE
and the Temperature is OK.
To restart a high-capacity DC power supply after a shut down due to an
over-temperature situation:
1. Switch off the circuit breaker(s) on the DC distribution panel to remove power to
the chassis and power supplies.
2. Switch on the circuit breaker(s) on the distribution panel to power up the chassis
and power supplies.
NOTE: The power switch on the power supplies is not part of the outer
or inner DC circuits and thereforedoes notneed to be switched offwhen
restarting the chassis.
Copyright © 2017, Juniper Networks, Inc.412
MX240 3D Universal Edge Router Hardware Guide
To Next Page
Loading...
