Daktronics AF-3090-89-R,A - Manual (Page 27)

Maintenance &
Troubleshooting
4-2
4.3 Signal Summary
Reference Drawings:
AF-3090 Controller Assembly, RS232/422 .............................................Drawing A-158254
AF-3090 Controller Assembly Modem ....................................................Drawing A-162098
AF-3090 Controller Assembly Fiber ........................................................Drawing A-162099
Schematic, AF-3090-8-32x***-24, Mono ................................................ Drawing B-161855
The signal routing for the display can be summarized as follows:
1. Data from the controller computer, which runs Venus1500 software, travels via RS232, RS422,
modem or fiber optic cable into the display.
2. For multiple face display or a display network, an RS422 (most typical) or fiber cable relays
signal between the controller of the first display and the controller in the second display.
3. From the controller, the signal then travels over a 40-conductor ribbon cables from the controller
(J11 through J16 provides signal out) to J2 on the driver of the first column of modules in the
display.
4. Data exists at J1 and is relayed to J2 of the next driver board and so on, traveling down the entire
row of modules. The drivers use this display data to control the LEDs.
4.4 Power Summary
Reference Drawing:
Schematic; Power Supply Configurations ...............................................Drawing A-158225
Power Specs, AF-3090, Amber ...............................................................Drawing A-158396
Power Specs, AF-3090, Red LEDs .........................................................Drawing A-162439
Schematic, AF-3090-8-32x***-24, Mono ................................................ Drawing B-161855
The following describes the internal display power routing for the display.
1. Incoming power terminates at the panelboard.
2. +12VDC power supplies power the modules in a monochrome red display and +14.7VDC power
supplies power the modules in a monochrome amber display.
4.5 Display Access
Display access for all 89 mm displays is from the front. To open the sign:
1. Locate the latch access fastener on the module. It is centered on the right side of the module.
2. With a 7/32
″
nutdriver, apply pressure to latch and turn it a quarter-turn counter-clockwise. The
module door will swing open to the left.
3. Interior display components may be accessed and the pixel strips may be removed.
When closing a display, reverse the previous steps and take note of the following points:
• The weather-stripping on the back edge of the module is intact and in good condition for
preventing water from seeping into the sign.
• The module latches are fully engaged to create a water resistant seal around the edge of the
module. The module must be firmly seated against the sign when the latches are fully engaged.