Daktronics TI-2020 Multipurpose Track & Field LED Timing Display - Manual (Page 30)

24 Display Maintenance
7. Reconnect all power/signal connectors.
Note: The connectors are keyed and will attach in one way only. Do not attempt to
force the connections.
8. Ensure the driver is set to the correct address (refer to Setting the Driver Address).
9. Close and secure the digit panel, then power up and test the display to see if
changing the driver has resolved the problem.
Note: Some earlier models of both TI-2020 and TI-2021 may require removal of all three
front panels for access to the driver.
Setting the Driver Address
Reference Drawing:
Address Table, 1 Through 128 ............................................................ Drawing A-115078
Since the same LED drivers can be used for many display
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 (Figure 13).
TI-2020 and TI-2021 both use address 22.
Refer to Drawing A-115078 in Appendix A for a listing of the
wire/pin connections for driver addresses 1 – 128.
6.5 Segmentation and Digit Designation
Reference Drawing:
Segmentation, 7 Segment Bar Digit ...................................................... Drawing A-38532
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.
The electrical and signal specifications drawings in Appendix A specify 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.
Figure 13: Address Jack
J19