Daktronics DF-12xx - Manual (Page 36)

4-4 Maintenance and
Troubleshooting
5. Reconnect the power/signal connector. Note: This is a keyed connector it
will attach in one way only. Do not attempt to force the connection!
6. Close and secure the digit panel and test the display.
Replace a malfunctioning colon, decimal, or indicator assembly in the same
manner.
Segmentation and Digit Designation
Reference Drawing:
Segmentation, 7 Segment Bar Digit .............................. Drawing A-38532
Electrical Specification Drawings .............................Refer to Appendix A
In each digit, certain LEDs always
go on and off together. No matter if
they are made up of one circuit
board, or separate boards, these
groupings of LEDs are referred to
as “segments”. Drawing A-38532
illustrates digit segmentation. It
also details which connector pin is
wired to each digit segment and the
wiring color code used throughout
the display.
The Electrical Specification
Drawings specify the driver
connectors controlling the digits.
Numbers displayed in hexagons in
the upper half of each digit, as shown in Figure
18 , indicate which connector or
connectors are wired to that digit. Larger digits, like the 36" digits shown in Figure
18 , are each wired to two connectors. (Digits for a 48” and 60” displays use four
connectors for each digit.)
Replacing an LED Driver
Reference Drawings:
4 Column MASC LED Driver Specifications................ Drawing A-166216
8 Column MASC Driver Specifications........................ Drawing A-167237
16 Col. MASC Driver Specification.............................. Drawing A-184475
Electrical Specification Drawings .............................Refer to Appendix A
Mechanical Specification Drawings..........................Refer to Appendix A
Drivers are typically mounted inside the display enclosure and behind a digit, but the
location and mounting varies by model. Refer to the Electrical and Mechanical
Specification Drawing for the location of your driver. All displays in the DataTime
and DataMaster series are front-accessible.
Figure 18: Digit Designation