Daktronics DF-2100 - Manual (Page 21)

Section 4: Diagnostics and Troubleshooting
Important Notes
Disconnect power before doing any repair or maintenance work on the display.
Allow only qualified service personnel access to internal display electronics.
Disconnect power when not using the display.
Daktronics displays are built for long life and require little maintenance. However, at times, displays
may not work correctly. Use this section to define the problems and find solutions.
4.1 Component Location and Access
To access the components of these displays, open the latch access fasteners on the digit
panels. Some models have one door that opens from the right. Other models have two doors
that open near the center. Use a screwdriver to turn the fasteners a half-turn
counterclockwise to open the panel. Remove two wing nuts to open the left panel, if present.
The internal components of the display are located as shown in Figure 11 and Figure 12. The
driver is typically mounted between two digit boards. The power pigtail will be connected to
the power source wiring with wire nuts.
Note: Disconnect power before servicing the display. Disconnect power, also, when the
display is not in use.
Figure 11: Inside View of Left Panel, Single-door Display
Figure 12: Inside View of Top Panel, Two-door Display
Diagnostics and Troubleshooting 13