Daktronics AF-3020-7.6-R,A - Manual (Page 28)

4.9 Troubleshooting
This section lists some symptoms that may be encountered with the display. Possible cause and
corrective actions are given. This list does not include every possible problem, but does represent
some of the more common situations that may occur. Contact Daktronics Customer Service if
problems continue with the display (refer to Section 4.12).
Symptom/Condition Possible Corrective Action
One or more individual LED pixels
will not light. · Replace display board.
A column of LED pixels will not light. · Replace driver board.
A row of pixels will not light. · Replace driver board.
A section of the display is not
working. Section extends all the way
to the right side of the display. · Replace the first driver on the left side of the
module that is not working.
· Replace the second driver that isn’t working.
· Replace the power supply on the first module on
the left side of the module that is not working.
· Replace the ribbon cable.
Entire display is garbled. · Replace the controller board.
A single line is garbled. · Replace the first driver on the left side of the
display of the bad line.
· Replace the ribbon cable.
· Replace the controller board.
Two modules (which share power
supplies) will not light. · Replace the power supply.
Entire display does not work. · Check 120 VAC to the display.
· Check 12 VAC to the controller board.
Controller not operating properly. · Refer to the Venus 1500 operator’s manual
(ED12717)
Temperature always reads 32
°F/
0
°C
· Check temperature sensor connections.
· Replace temperature sensor.
· Replace controller board.
Display is stuck on bright or dim. · Check Manual/Auto dimming.
· Check light detector cable.
· Replace light detector.
· Replace controller board.
4.10 Boot Up Initialization Information
When first powered up, the display will run through an initialization in which it will display the
following:
1. Output Test (DDDs)
2. Product Name (Galaxy)
3. Display Size (Row x Column)
4. Firmware Number (ED10134)
5. Firmware Revision (Rev X.XX)
6. COM1 Configuration (C1: V15/RTD)
7. COM2 Configuration (C2: None)
8. Line Frequency (60 Hz)
4-6 Maintenance & Troubleshooting
9. Hardware Address (HW: XX)