Table 15. 2870 W AC Power supply LED descriptions
LED purpose
Color
Status
Recommended action
Power status
No light (LED is off)
Power supply does not
have incoming power and
is not providing power to
the device.
Note:
When incoming
power is first removed,
LED flashes, and then turns
off.
Ensure that the power
supply is firmly seated,
power cable is connected,
and that power cable is
connected to power source.
Disconnect power cable
from power supply, remove
and reinsert power supply,
and then reconnect power
cable to restart.
If status persists, replace
power supply assembly.
Steady green
Power supply has incoming
power and is providing
power to the device.
No action required.
Flashing on one-half
second, and then off
one-half second.
AC power is disconnected
from the power supply
assembly, but additional
power supply installed in
device is powered on.
Check power connection at
power supply, cable, and
AC power source. If these
check out, disconnect
power cable from power
supply, remove and reinsert
power supply, and then
reconnect power cable to
restart. If status persists,
replace power supply
assembly.
Flashing on two times, and
then off 5 seconds.
48V is out of range.
Disconnect power cable
from power supply, remove
and reinsert power supply,
and then reconnect power
cable to restart. If status
persists, replace power
supply assembly. If status
persists, replace power
supply.
Flashing on three times,
and then off 5 seconds.
12V is out of range.
Disconnect power cable
from power supply, remove
and reinsert power supply,
and then reconnect power
cable to restart. If status
persists, replace power
supply assembly.
Flashing on four times, and
then off 5 seconds.
AC input is under voltage.
Verify voltage in power
distribution unit (PDU) or
system providing power to
power supply assembly.
Check cabling and voltage
between PDU and switch.
Correct the voltage as
necessary. If correct voltage
is verified, replace power
supply assembly.
Chapter 6. Monitoring the switch
81
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