Juniper EX8208 Hardware Manual page 74

Table 31: DC Power Supply LEDs in EX8200 Switches (continued)
LED
B IN OK
OUT OK
FAIL
State
Unlit
Green
Yellow
Red
Unlit
Green
Yellow
Unlit
Yellow
Description
Indicates one of the following:
Power supply is disconnected from DC power
feed.
DC power input voltage is not within normal
operating range (-40 VDC through -72 VDC).
No DC power input.
DC power input voltage is within the normal
operating range (–40 VDC through –72 VDC).
DC input is present on the terminals but either
the fuse is tripped or the ORing diode is open.
DC power input voltage is reversed in polarity.
NOTE: The DC power supply is protected against
reverse polarity input for both DC input feeds.
Indicates one of the following:
DC output voltage is not within normal operating
range.
Power supply is not supplying DC power
correctly.
DC power output is within normal operating
range.
Power supply has been disabled internally by
the system.
Power supply is functioning normally.
On steadily—Power supply has failed.
Blinking—Demand for output power exceeds
the supply.
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