Daktronics AF-3090-89-R,A - Manual (Page 28)

Maintenance &
Troubleshooting
4-3
4.6 Service & Diagnostics
Reference Drawings:
AF-3090 Controller Assembly, RS232/422 .............................................Drawing A-158254
Z-Filter Assy 2, W/GND bar………………………………………………..Drawing A-158472
Assy, Pwr Sply, AF-3090 .........................................................................Drawing A-158580
Schematic, Power Supply Configurations...............................................Drawing A-158225
Driver Assembly, AF-3090, 8x8-24..........................................................Drawing A-161661
AF-3090 Controller Assembly Modem ....................................................Drawing A-162098
AF-3090 Controller Assembly Fiber ........................................................Drawing A-162099
Panel Assembly, AF-3090, 8x8-24 ......................................................... Drawing B-161694
Schematic, AF-3090-8-32x***-24, Mono ................................................ Drawing B-161855
The following sub-sections address servicing of the below display components:
• Line filter and ground bar
• Modules, drivers and power supplies
The sub-sections also address any diagnostic LEDs, fuses and signal/power connectors found on the
components.
The Display Assembly drawings denote the components as follows.
Component… Denoted As… Location…
Line Filters & Ground Bar 0A-1259-4003 Left side, behind module AX02
Modules 0A-1259-3000 or
0A-1259-3001 Over entire face of the display
Power Supplies 0A-1259-4004 Behind the modules; refer to the Display Assembly
drawings
Line Filter
You can replace the filter by first removing all connecting wires, and then releasing the
attachment hardware. Refer to Drawing A-158472. Install the new filter and reference Drawing
B-161855 for correct wiring.
Modules, Pixel Strips & Drivers
A module consists of louvers, several pixel strips and a driver board mounted to its back. Refer to
Section 4.5 to open a display via the modules and access the pixel strips and driver boards.
A pixel strip is a circuit board with four LED pixel clusters mounted directly on it. Each pixel strip
is removable from the module. To remove a pixel strip from the module:
1. Open the display as described in Section 4.5.
2. Disconnect the power and signal connector from the strip you wish to replace.
3. If the pixel strip you wish to replace is located behind the driver assembly, unplug all signal
and power connections on the driver assembly and remove the four corner screws. Refer to
Drawing A-161661.
4. Remove the six wing nuts holding the pixel strip in place.
5. Gently lift the strip from the display.