Daktronics VS-5000 Series, Руководство пользователя

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Maintenance and Troubleshooting
13
One pixel will not light.
Terminal is bad or not fully
seated in plug at module, or
wire is bad.
Repair as needed.
The module is bad. Replace failed module.
One pixel will not turn off. The module is bad. Replace failed module.
Ventilation fan is not running.
Temperature inside the sign
is lower than the thermostat
setting.
This is not a problem.
The thermostat or its wiring is
bad.
Repair as needed.
Fan is bad. Replace fan.
Ventilation fan is running
continuously.
Temperature inside the sign
exceeds the thermostat
setting.
This is not a problem.
The thermostat is stuck on or
the wiring is shorted.
Replace the thermostat or
repair wiring.
LED brightness is wrong—entire
sign is too bright or too dim.
Light sensor assembly is
obstructed.
Clear obstruction.
One or more wires or terminals
in the light/temp control
cable are misplaced, open or
shorted to other wires or the
frame in sign, sign controller, or
control cable from sign to sign
controller.
Repair as needed.
Operator error—light sensor is
not enabled or levels are set
incorrectly.
Correct settings.
Light sensor PCB is bad. Replace light sensor.
Sign controller is bad. Refer to Sign Controller
Replacement (p.8) .