Daktronics AF-3112-34-R,A - Manual (Page 45)

The modem board also has several input and output jacks:
1. J3 is the power input for 12VAC
2. TB2 is a phoenix connector to terminate the Tip and Ring wires
3. J5 is an RJ11 jack for termination of a pre-terminated phone line
4. J6 is the RS232 RJ45 output to the controller
5. J2, TB1, and TB3 are not used in this display application
A modem system requires a jumper (X1) to be set on the controller board. Refer to
Figure 40 below for the location of the jumper settings.
Figure 40: Modem Jumper Location
Fiber Board
If a fiberboard is included with the display, it is located in the fiber enclosure
mounted at the display. Refer to the fiber information in
Section 3.7 for fiberboard enclosure location.
Figure 41: Fiber Optic Board
1. To replace a fiber optic board, first disconnect
the power and signal connections (refer to
Figure 41 for disconnection of power).
2. The fiber optic board is held in place with four
screws. Carefully remove them using a 3/16”
nut driver.
3. Install the new fiberboard, replace the screws
and reconnect power and signal cables.
The fiber module has three LEDs.
• The power LED (DS1) should remain lit while
power is applied to the module.
• The receive LED (DS2) will flash when the display
fiberboard is accepting signal from the signal
converter.
• The transmit LED (DS3) will flash when the display
fiberboard is sending to the signal converter.
In addition, the fiber module has two input fiber
connectors, which the computer or the previous display connects to, and two output
fiber connectors that connect to the next display. A straight through RJ45 cable
connects from J7 on the fiberboard to J3 on the controller board.
Maintenance and Troubleshooting
4-9