18
Scoreboard Troubleshooting
Replacing a Driver
If the driver status indicators do not appear to be working correctly, it may be necessary to
replace the driver.
1.
Open the digit panel or scoreboard face panel as described in
Section
2.
Disconnect all connectors from the driver
by squeezing together the locking tabs and
pulling the connectors free.
Note:
It may be helpful to label the cables to know which cable goes to which
connector when reattaching the driver.
3.
Remove the wing nuts securing the driver to the driver tray.
4.
Carefully lift the driver from the display and place it on a clean, flat surface.
5.
Position a new driver over the screws and tighten the nuts.
6.
Reconnect all power/signal connectors.
Note:
The connectors are keyed and will attach in one way only. Do not attempt to
force the connections.
7.
Ensure the driver is set to the correct address (refer to
Setting the Driver Address
).
8.
Close and secure the access panel, then power up and test the scoreboard to see if
changing the driver has resolved the problem.
Setting the Driver Address
Since the same LED drivers can be used for many
scoreboard models, each driver must be set to receive
the correct signal input, or address, for the model
being used. This address is set with jumper wires in a
12-pin plug which mates with jack J19 on the driver
(
Note:
The scoreboards in this manual must be set
to address 17. Refer to
Drawing A-115078
in
Appendix A
for more information on addressing.
4.5 Segmentation & Digit Designation
In each digit, certain LEDs always go on and off together. These groupings of LEDs are called
segments
.
Drawing A-38532
in
Appendix A
details which connector pin is wired to each
digit segment and the wiring color code used throughout the display.
Drawing A-170492
in
Appendix
A
specifies the driver connectors controlling the digits.
Numbers shown in hexagons in the upper half of each digit indicate which connector is wired
to that digit.
4.6 Schematics
For advanced scoreboard troubleshooting and repair, it may be necessary to consult the
schematic drawings.
Drawing A-158348
in
Appendix A
shows detailed power and signal
wiring diagrams of internal display components.
Figure 12:
Address Jack J19
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