JUNOS Internet Software Network Operations Guide: Hardware
234 ! Checking the Power Supply Status
Table 62 describes the functions of the M320 router AC and DC power supply LED.
Table 62: M320 Router AC/DC Power Supply LED
Table 63 describes the functions of the M320 router AC and DC power supply LED.
Table 63: T320 Router DC Power Supply LED
Table 64 describes the functions of the T640 routing node DC power supply LEDs.
Table 64: T640 Routing Node Power Supply LEDs
Label Color State Description
OUTPUT OK
Blue Off No power applied to power supply.
Blinking
! Power supply blinks for 5 seconds after initial
power on.
! Power supply is installed, but not powered on,
and is receiving bias power from a proword on
power supply.
! Input voltage is invalid
! Power supply has failed.
On steadily Power supply is functioning normally.
Label Color State Description
DC OK
Blue On steadily Power supply is installed correctly and is functioning
normally.
Blinking Power supply is starting up, is not functioning, or is
not properly installed.
LED Color State Description
CB ON
Green On steadily Power supply is installed correctly and is
functioning normally, is receiving power, and
the circuit breaker is on.
CB TRIP
Amber On steadily Circuit breaker not turned on, or host
subsystem has detected a failure and has
turned the circuit breaker off.
OVER TEMP Amber On steadily Power supply has exceeded the recommended
temperature.
DC OK Blue On steadily Power supply is installed correctly and is
functioning normally.
Blinking Power supply is starting up, is not functioning,
or is not properly installed.
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