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Maintenance and Troubleshooting
5-2
The tennis scoreboards described in this manual are all
front-access displays.
Internal components are serviced by opening or removing panels on the front of the
display. Some panels are hinged; to open these, simply remove the panel screws.
Other face panels may be removed by loosening the screws and sliding the panel
upward on a keyhole opening, and lifting it off. Some components may be located
directly behind a digit or digits, and service may require the removal of one or more
digit panels.
For most Daktronics outdoor scoreboards, digit panels have been simplified. They
are held in place on the display face by an offset flange across the top and by a
single screw at the bottom. (Larger digits may have two screws.)
Refer to
Figure 7 at right. Open the
scoreboard with care. Hold the digit panel in
place by putting hand pressure on it while
removing the screw, and carefully lift it from
the board, sliding it down and out. If the
panel is not held in place, it will drop
immediately when the screw is removed,
possibly damaging LEDs or the digit harness.
Refer to the component layout drawings
listed at the beginning of this section for
internal component location information.
Note: Disconnect power before servicing
the display!
Disconnect power, too, when
the display is not in use. Prolonged power-on
may shorten the life of some electronic
components.
Replacing a Digit
Reference Drawing:
Digit Assemblies; Gen III LED Digits ........................... Drawing B-177679
The digit circuit board, the platform for the LEDs, is mounted to the back of the digit
panel. See
Figure 8 below. Do not attempt to remove individual LEDs. In the case
of a malfunctioning board, replace the entire digit panel.
Figure 7: LED Digit Panel (Not to Scale)