Juniper SRX4100, Hardware Manual

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Figure 8: AC Power Supply LEDs
Table 9 on page 14 describes the AC power supply LEDs.
Table 9: AC Power Supply LEDs
Description State Color LED
Indicates one of the following:
• Power input voltage is not within the normal
operating range.
•
No power input.
Off Unlit AC
Input power present and is within the normal
operating range. Steady Green
No DC power output or abnormal DC output. Off Unlit DC
DC power output is within the normal operating
range. On steadily Green
Power supply unit failure. On steadily Amber ! (Fault)
Invalid power supply unit. Blinking
Power supply unit is functioning normally. Off Unlit
NOTE:
•
If both the AC LED and the DC LED are unlit, either the AC power cord is
not installed properly or the power supply fuse has failed.
• If the AC LED is lit and the DC LED is unlit, the AC power supply is installed
properly, but the power supply has an internal failure.
DC Power Supply
Each DC power supply weighs approximately 2.2 lb and has two independent pairs of
DC input lugs, a fan, and LEDs for monitoring the status of the power supply. The DC
power supply in the services gateway is a hot-insertable and hot-removable
field-replaceable unit (FRU) when the second power supply is installed and running. You
Copyright © 2017, Juniper Networks, Inc. 14
SRX4100 Services Gateway Hardware Guide