Table 64: DC Power Supply LEDs (continued)
DescriptionStateColorLabel
Power supply is functioning normally.On
The main output voltage is out of range (lower limit: 37.5 V to 39.5 V; upper limit:
72.5 V to 76 V).
OnYellow
DC power supply circuit breaker is turned off.OffGreenBRKR ON
DC power input is present and the DC power supply circuit breaker is turned on.On
DC input to the PEM is not present.OffGreenINPUT OK
DC input is present and is connected in correct polarity.On
DC input is present, but not in valid operating range or connected in reverse polarity.OnYellow
Related
Documentation
• Power Supply LEDs on the MX480 Craft Interface on page 17
• MX480 Power System Description on page 99
• MX480 AC Power Supply Description on page 100
• MX480 DC Power Supply Description on page 102
• DC Power Supply Electrical Specifications for the MX480 Router on page 157
105Copyright © 2017, Juniper Networks, Inc.
Chapter 7: Power System Components and Descriptions
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