Daktronics DF-1020 - Manual (Page 35)

Maintenance and 4-7
Troubleshooting
Power On Self-Test:
A useful troubleshooting tool is the power on self-test the host driver performs every
time it powers up:
+ If the signal wiring between each controller is correct, the first two digits of
each driver will display “Ad” momentarily, and the first digit will then flash
three numbers indicating the decimal address that is set with the address
plug in J19. (If a client driver displays “A <number>,” followed by “P
Failure Code Description Possible Solution
E1 Protocol Setting Error: There is an
unsupported driver protocol
setting.
Check the value set in the protocol
plug of the driver (J20).
E2 Time Error: There is no valid time
stored in the driver; it may be a
failure of the real-time clock on
board or other timekeeping
device.
Set the time in the display using the
Set Time menu option on the
DataMaster 100 controller.
(DataTime Time & Temp displays
only)
E3 Temp Error: There is no response
from the temp sensor or light
sensor, or general temp sensor
failure.
Check the temp sensor location and
verify all connections. Refer to the
instruction sheet for the CAN
Temperature/Light Sensor
mounting, ED13364.
Note: The temp sensor takes
approximately 10 seconds to
initialize on power-up. The sign
will display this error until
initialization is complete.
E4 No Message Error: This code is
shown when there are no
messages downloaded to the
display
Download a new message to the
display using the < DISPLAY
SEQUENCE > key on the DataMaster
100 controller.
E5 No Line Number Selected Error:
The driver for this line has a
Protocol 4 plug installed in J20,
but there is no address plug
installed in J19.
Set the line number by installing the
correct plug in J19. The Protocol 4
plug designates this driver as the
“host “. If this is not the host,
remove the Protocol 4 plug from
J20.