Nevco Indoor LED Scoreboard Installation Manual

WIRED TROUBLESHOOTING GUIDEThe figure to the rightlabels the connectionsfrom A – M. The chartbelow lists the problemthat can be identifiedshould any connectionbe faulty. Check thecontrol and servicemanual for more detailedinformation.NOTE: The number thatappears above a letterrefers to the number ofwires or conductors inthe cable.BranchCircuitControl3A2 (coax)BPowerSupplyScoreboardInterface4C8DILM-2SIC1-8BLHornsETNMasterDigit8E2I2HornK 6L10FDriverBacklightsHome/Guest8H10G2J6MSlaveDigitTo NextDigitTo NextBacklightTo NextETN PanelSituation Symptom Connection SolutionThe Scoreboardhas no digitsilluminatedSome digits notilluminated, ornon-workingaccessoryWhen power is first applied the timer section does notrotate through a test patternWhen power is first applied the timer section rotatesthrough a test pattern, but then the display goes out.ACEBDCheck branch circuit breaker and power connectionsCheck connection on ILM and power supply terminal screwsCheck connection to first digit in timer sectionCheck Coax connections. Plug control directly into the top of the board toeliminate installed coax cable. If that works, the cable run or terminations arebad. Try the 301 Model code, see control users manual on testing.Check connections on inside of board at the SIC and at the ILMOnly one digit F / G / H Check 10-pin connection on Driver card and 2-pin on single segmentsHorn K Check 2-pin connection on ILM and at horn (2 horns ea.)Backlight channelsI / JCheck 2-pin connection on ILM and at backlight. Check instructions to see ifthe backlights are supposed to be ON.All or partial ETN’s not working L / M Check 6-pin connection from ILM to ETN and between ETN panelsPage 4