Juniper PTX5000 Hardware Manual page 121

Table 32: 120-A DC PDU LEDs
LED
PDU OK—One per power
supply
–48 V 120 A—One per input
CB ON—One per input
Color State Description
Green On steadily PDU is functioning normally.
Red On steadily PDU has failed.
– Off PDU might be starting up or not receiving any input
voltage. The circuit breakers might be off.
Green On steadily Input is receiving voltage.
– Off Input voltage is not present, or is under –40 V.
Green On steadily Circuit breaker is powered on.
– Off Circuit breaker is not powered on, or the circuit breaker
is on but the input is under –40 V. The circuit breaker
might have been turned off, the host subsystem
detected a failure and turned off the circuit breaker, or
the power supply is not receiving any input voltage.
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