Table 1. Power supply LED combinations for detecting potential problems (continued)
AC
DC
Error
Description
Action
Notes
Off
Off
On
No AC power is going to
the appliance, or there is a
problem with the AC
power source and the
power supply detected an
internal problem.
1.
Replace the power
supply.
2.
Make sure that the
power cord is
connected to a
functioning power
source.
This condition occurs when
a second power supply is
providing power to the
appliance.
Off
On
Off
The power supply is faulty. Replace the power supply. N/A
Off
On
On
The power supply is faulty. Replace the power supply. N/A
On
Off
Off
The power supply is not
fully seated.
1.
Reseat the power
supply.
2.
If a power channel
error LED on the
system board is not
illuminated, replace
the power supply.
This condition usually
indicates that a power
supply is not fully seated.
On
Off or
flashing
On
The power supply is faulty. Replace the power supply. N/A
On
On
Off
The power supply is
operating normally.
N/A
N/A
On
On
On
The power supply is faulty
but it is still operational.
Replace the power supply. N/A
4
