Troubleshooting The Ptx5000 Power Supply Modules - Juniper PTX5000 Hardware Manual

Table 89: Troubleshooting PDU LEDs
LED State Condition
Off The LED might be off for one
of the following reasons:
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Troubleshooting the PTX5000 Power Supply Modules

IN THIS SECTION
Problem | 601
Solution | 602
Problem
Description
The following alarms, LEDs, and other conditions indicate a problem with the power supply modules
during normal operations:
• Table 90 on page 603 lists alarms.
(Continued)
Solution
1. Connect the PDU to a different power source
The PDU is starting.
2. If the PDU OK LED still does not light, the PDU
The PDU is not receiving
input voltage.
The circuit breakers on
the 120-A DC PDU might
be off.
The circuit breaker on the
three-phase delta AC
PDU or three-phase wye
AC PDU might be off.
The input power switches
on the 60-A DC PDU
might be off.
with a new DC power cable or AC power cord.
might be the source of the problem. Replace the
PDU with a spare.
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
Customer Support to Obtain Return Material
Authorization
.
601
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