Daktronics AF-3180-64-R,A - Manual (Page 47)

Fiber Board
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 light when the display fiber
board is accepting signal from the
computer fiber board. The transmit
LED (DS3) will light when the
display fiber board is sending to the
computer fiber board. 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. The
fiber board connects to the
controller board with a straight
through RJ11 cable.
Figure 42: Fiber Optic Board
To replace a fiber optic board:
1. Disconnect the power and
signal connections (refer to
Figure 39 above for
disconnection of power).
2. The fiber optic board is held in place with four screws. Carefully remove
them.
3. Install the new fiber optic board, replace the screws and reconnect power
and signal cables.
RS422 Surge Suppressor
The surge suppressor is an inline device that is used to filter the RS422 data line. It
suppresses surges down to a low voltage in order to protect the display controller's
RS422 input. The surge suppressor must be firmly connected to the displays chassis
in order to be effective. The mounting hardware used to secure the surge suppressor
is sufficient if it is fastened properly.
1. Open the display as
described in Section 4.5.
Figure 43: Surge Suppressor
2. Disconnect the signal
connections (refer to
Figure 40 on the right).
3. The surge suppressor is
held in place with four
screws. Carefully remove
them.
4. Install the new surge
suppressor, replace the
screws, and reconnect
power and signal cables.
Maintenance and Troubleshooting
4-9