Daktronics Galaxy AF-3400 Series, Display Manual

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Maintenance and Troubleshooting
4-11
Diagnostic LEDs are located on the controller. The table below tells what each LED
denotes:
CPU
LED Color Function Operation
DS1 Red CAN TxD Flashes when controller is transmitting CAN information.
DS2 Red CAN RxD Flashes when controller is receiving CAN information.
DS3 Red System Reset Off when controller is functioning properly. Flashes at 1.5-
second rate if controller is not resetting the watchdog timer.
DS4 Red Run A steady flash indicates the controller is running properly.
Normal flash rate is about once per second.
DS5 Red U15
Programmed
On when U15 contains a valid logic program.
DS7 Red Link On when Ethernet interface is in the link-up condition.
Flashes when the Ethernet chip detects transmits or
receives activity.
DS8 Red Speed On when the Ethernet interface is at 100Mbps. Off when
the Ethernet interface is at 10Mbps.
DS9 Red Duplex On when the Ethernet interface is at full duplex. Off when
the Ethernet interface is at half-duplex.
DS10 Red Collision Flashes when the Ethernet interface detects a collision in
half-duplex.
DS12 Red +2.5V On when +2.5V power supply is functioning.
DS13 Red +3.3V On when +3.3V power supply is functioning.
Product Board
LED Color Function Operation
DS1 Green +5V On when +5V power supply is functioning.
DS2 Green +3.3V On when +3.3V power supply is functioning.
DS3 Yellow COM1 TxD Flashes when transmitting serial information.
DS4 Yellow COM1 RxD Flashes when receiving serial information.
DS5 Yellow Light Flashes when receiving signal from light sensor.
DS6 Yellow Com 2 RX2 Normal state is ON. When connected to receive RTD
input, the LED will be OFF. The LED flashes when
receiving signal from RTD input device.
Temp Sensor
LED Color Function Operation
DS1 Green +5V On when +5V power supply is functioning.
DS2 Red Run A steady flash indicates the controller is running correctly.
Normal flash rate is about once a second. Flashes faster
when the sensor is transmitting temperature or light
information.