Solution 1. Issue the show chassis alarms command to check for alarms.
Check the display on the craft interface to determine the source of a yellow or red
alarm). Junos OS constantly updates the screen with status information for each
component.
NOTE: From the rear of the chassis, the PDUs are labeled PDU1 and PDU0,
from left to right.
2. Check the LEDs on each PDU faceplate.
Table 39: PDU LEDs
SolutionConditionStateLED
a. Check that the customer site circuit breakers are switched
on.
b. If the customer circuit breakers are switched on, switch them
off and reinstall the DC power source cables.
OffDC IN
a. Check that the circuit breakers are switched to the ON
position (|)
b. Verify that the voltage is above –40 V.
OffCB ON
a. Check the fan trays in the power supply modules are
operating and that no red alarm condition exits.
b. Check all air filters to be sure they are functioning and
providing sufficient airflow through the chassis.
c. Issue the show chassis environment pdu command to
determine the cause of the problem.
RedFAULT
Issue the show chassis environment pdu command to determine
which electronic fuse has failed.
RedPDU OK
a. Connect the PDU to a different power source with a new
DC power cable.
b. If the PDU OK LED still does not light, the PDU might be the
source of the problem. Replace the PDU with a spare.
Off
If the PDU OK LED on the installed spare is lit green, the PDU
that was replaced might be faulty. To return it for replacement,
see “Contacting Customer Support” on page 275.
3. Check the status of the power supplies by issuing the show chassis environment pdu
command.
The output is similar to the following:
user@host> show chassis environment pdu
Copyright © 2012, Juniper Networks, Inc.140
PTX5000 Packet Transport Switch Hardware Guide
To Next Page
Loading...
