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Installation and Troubleshooting 2 - 23
Primary
Power
(cont.)
Steady
blinking
(cont.)
The primary
power supply
is not properly
installed.
Reinstall the primary
power supply and turn it
on.
Two blinks,
then a pause
(in unison
with Backup
Power LED)
The power
load-sharing
hardware is in
an error state.
If a management module
is installed, the
concentrator should
recover automatically
from this condition. If it
doesn't, reset the
concentrator using the
RESET CONCENTRATOR
command. If this fails to
correct the condition,
turn both power
supplies OFF, then ON
again.
If a management module
is not installed, turn both
power supplies OFF, then
ON again.
Backup
Power
Off The Backup
Power LED is
broken.
Press the LED Test button
to verify that the LED is
working properly.
The backup
power supply
is not properly
installed.
Reinstall the backup
power supply and turn it
on.
Table 2-4. Troubleshooting with Controller Module LEDs
(Continued)
LED State
Possible
Problem
Troubleshooting
Suggestions