Daktronics AF-3080-68-R,A - Manual (Page 50)

Modem
If a modem is included with the display, it is located
inside the display next to the controller board.
1. To replace a modem, first disconnect the
power and signal connections (refer to Figure
38 on the right for the location of the power
jack).
2. The modem is held in place with four 3/16"
screws. Remove the screws and lift the modem
out of the display the display.
3. Attach the new modem using the same four
screws removed in step 2, above.
The modem module has two LEDs. The Power
LED should remain lit while power is applied to
the modem. The Active LED will light when the
modem is in the process of communicating.
A modem system requires jumpers to be set on the
controller board. When using a modem, the jumpers must be closed.
Figure 38: Modem Board
Figure 39: Modem
Maintenance and Troubleshooting 4-8