MatrixMonitor™ IOM - Rev 4 - 4/11/2013
Page 54
Trouble Shooting Guide
Problem
Possible Cause
Corrective Action
When power is available to the
control unit the keypad display
will always be active, there are
red, yellow and green LEDs on
the mother board that are lit.
Power to the FSB units is
supplied from the motherboard
and there is a red LED on each
unit that will be active when
power is present.
If all of these indications are
absent there is a problem with
the power to the mother board.
Loss of power supplied to
MatrixMonitor™ DC power
supply.
Check AC input power to Power
supply with voltmeter. Restore
power to power supply if
necessary.
Bad Power Supply.
Check for 12VDC output from
power supply at the V+ and V-
terminals on the power supply.
Replace the power supply if
there is AC power supplied and
the output voltage is not
+12VDC.
Bad Connections between the
power supply and TS1.
Check connections between
power supply and mother board.
Flashing red LED on an FSB Unit.
The FSB units have a red LED
that is visible from the front of
the unit when it is installed on its
electrical box. When there is
power to the mother board the
LED should be on and not
flashing. The LED flashes on and
off when it cannot communicate
with the control unit.
Bad connection
Remove the FSB from the
electrical box it is mounted on.
Pull the connector and remove
the dust cover to check the wire
connections.
Wrong Switch setting
Remove the FSB from the
electrical box and check the
setting of the rotary switches.
Incorrect Set up information
Check the setting for the number
of fans in the fan array. The
number of fans installed should
agree with the setting.
The red LED on the front of the
FSB will not light up and there is
power on the network because
the LEDs work on other FSBs.
BAD Connection
Remove the FSB from the
electrical box it is mounted on.
Pull the connector and remove
the dust cover to check the wire
connections.
Bad FSB
Replace the FSB
There is a flashing green light on
the mother board.
The green light labeled processor
flashes on and off to indicate the
microcontroller is working.
This is normal and it is not a
problem.