Daktronics BA-2009 Display Manual

Also see for BA-2000 Series: DISPLAY MANUAL

Contents

Daktronics BA-2009 Display Manual Manual pdf 39 page image

In each digit, certain LEDs always go onand off together. These groupings of LEDsare referred to as segments.Drawing A-38532 illustrates digitsegmentation. It also details whichconnector pin is wired to each digitsegment and the wiring color code usedthroughout the display.The component locations drawings inSection 5.2 specify the driver connectorscontrolling the digits. Numbers displayedin hexagons in the upper half of each digit,as shown in Figure 14, indicate whichconnector is wired to that digit. (The lower number in the square indicates nominaldigit size.) The drawings listed at the beginning of this section also indicate digitdesignation and specify the harnesses used for each of the digit/driver connections.Figure 14: Digit Designation5.6 Lightning ProtectionThe use of a disconnect near the scoreboard to completely cut all current-carryinglines significantly protects the circuits against lightning damage. The NationalElectrical Code also requires the disconnect. In order for this system to provideprotection, the power must be disconnected when the scoreboard is not in use. Thecontrol console should also be disconnected from power and from the signal junctionbox when the system is not in use. The same surges that may damage thescoreboard’s driver can also damage the console’s circuit.5.7 TroubleshootingThe table below lists potential problems with the scoreboard and indicates possiblecauses and corrective actions. This list does not include every possible problem, butdoes represent some of the more common situations that may occur.Symptom/Condition Possible CauseScoreboard will not light • Console not connected or poor connection• No power to control console• No power to the scoreboardGarbled display • Internal driver logic malfunction• Control console malfunctionDigit will not light • Black wire to digit broken• Poor contact at driver connection.• Driver malfunctionScoreboard Maintenance 5-7and Troubleshooting