Daktronics DF-1060 - Manual (Page 26)

3-4 Display Maintenance
and Troubleshooting
Replacing a Driver
Drivers are mounted inside the display and immediately behind a digit, and with the
Lottery displays, the driver enclosure is located immediately behind the center digit.
Each driver is enclosed with a power supply and power and signal terminal blocks.
Before a failed driver can be reached, the enclosure must be accessed. Follow these
steps:
1. Open the digit panel or display face panel as described in Section 3.2.
2. Remove the cover from the driver enclosure.
3. Disconnect all connectors from the driver. Release each connector by squeezing
together the locking tabs as you pull the connector free.
Note: When reconnecting, remember that these are keyed connectors and will
attach in one way only. Do not attempt to force the connections.
4. Remove the screws, nuts, or wing nuts securing the driver to the inside of the
enclosure.
5. Carefully lift the driver from the display and place it on a clean, flat surface.
6. Follow steps 1 through 5 in reverse order to attach a new driver.
3.3 Schematic
Reference Drawing:
Schematic; 16 Col Multipurpose LED Drvr.................. Drawing A-179599
Drawing A-179599 is the schematic diagram for the 16-column driver used in the
Data Master Lottery displays. The schematic includes power and signal inputs and
all wiring for the models described in this manual.
3.4 LED Drivers
Reference Drawing:
16 Col. MASC Driver Specification.............................. Drawing A-184475
In the display, the LED driver performs the task of switching digits on and off. Refer
to Drawing A-184475 for a complete listing of driver connector functions and
wiring pin numbers.
All Data Master Lottery displays use 16-column drivers, and each driver has 20 or
more connectors providing power and signal inputs to the circuit, and outputs to the
digits and indicators. The following table describes connector functions for a 16-
column driver.