2 - 22 ONline 17-Slot System Concentrator Installation and Operation Guide
If any of these LEDs are not lit as shown in this chart, refer to Table 2-4 to
troubleshoot the problem.
Table 2-4. Troubleshooting with Controller Module LEDs
LED State Possible
Problem Troubleshooting
Suggestions
Primary
Power
Off The Primary
Power LED is
broken.
Press the LED Test button
to verify that the LED is
working properly.
The primary
power supply
is not properly
installed.
Reinstall the primary
power supply and turn it
on.
Steady
Blinking The primary
power supply
has failed.
Verify that the outlet is
supplying power.
Verify that the voltage
selection switch is set to
the correct position for
your country's line
voltage.
Verify that the power
cord is plugged in at
both ends and that the
cord is appropriate for
your country's line
voltage.
Verify that the power
switch is turned on.
Replace the power
supply.