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24 Scoreboard Troubleshooting
Note: If the panel is not held in place when the screws are removed, it could drop
and possibly damage LEDs or the digit harness.
With a non-digit access panel, simply remove the top, side and bottom screws holding it in
place. Some panels are hinged and swing open when the screws are removed or loosened.
Rear access panels can be lifted up and out over the screws through keyholes.
Note: When closing the access panel, make sure all latches/screws are holding the door
firmly in place to prevent moisture and debris from entering the scoreboard.
5.3 Component Locations
Component location varies with each scoreboard model. Refer to the component location
drawings in
Appendix A . Drivers and power and signal components are typically mounted
inside the scoreboard behind a digit or access panel.
5.4 Replacing Digits
LEDs are embedded in a circuit board
that is mounted to the back of the digit
panel, as shown in
Figure 20 . Do not
attempt to remove individual LEDs.
In the case of a malfunctioning LED or
digit segment, replace the entire digit
circuit board.
To replace a digit circuit board:
1. Open the digit panel as
described in
Section 5.2 .
2. Disconnect the power/signal
plug from the back of the digit
by squeezing together the
locking tabs and pulling the
connector free.
3. Use a
9
/
32
" nut driver to remove
the nuts securing the digits to
the inside of the panel, and then
lift the digit off the standoff studs.
4. Position a new digit over the studs, making sure the rubber side of the rubber-backed
spacer is facing the digit circuit board.
5. Tighten the nuts.
6. Reconnect the power/signal connector.
Note:
This is a keyed connector and it will attach in one way only. Do not attempt to
force the connection.
7. Close and secure the digit panel, then power up and test the scoreboard to see if
changing the digit has resolved the problem.
Figure 20: Digit Assembly