Daktronics FB-2500 Series, Руководство по обслуживанию, Страница: 28 / 48

TNMCs & Electronic Captions
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The S2 DIP switch is the component for setting the address (switches #1-4). With switches
1-4 off, the address setting for a TNMC is preset at “221” (16x80 TNMCs use address
“231” for HOME and “232” for GUEST). Multi-court tennis scoreboards (and single-court
scoreboards controlled by DakTennis) with TNMCs will require different addresses. Refer to
DWG-1202417 in Appendix B .
For electronic captions, the typical driver address is “227” (exceptions: Time Outs Left
captions = address “225”). Refer to DWG-328274 in Appendix B for more information on
setting the driver address.
The S2 DIP switch also controls Home and Guest display. If the #5 switch is ON, the display
shows Guest information. If the #5 switch is OFF, the display shows Home information.
Note: For 16x80 TNMCs, always leave the #5 switch OFF for both Home and Guest sides.
Diagnostic LEDs
Refer to Figure 21 for the location of the four diagnostic LEDs on the display driver. The
following table explains the functions of each diagnostic LED.
Note: While it is necessary to have the display powered on to check the LED indicators,
always disconnect power before servicing.
LED Function Color Illumination Summary
DS1 Signal TX Green
Steady on or blinking when the driver is
transmitting and off when there is no signal
DS2 Signal RX Red
Steady on or blinking when the driver is receiving
signal and off when there is no signal
DS3 Power Green Steady on to indicate the driver has power
DS4 Status Amber
Blinking to indicate driver is running; steady on or
off if microcontroller is not working
Replacing a Display Driver
Refer to the component location drawing in Appendix B to determine the location of the
display driver.
To replace a display driver:
1� Access the internal components using the appropriate front/rear access method
described in Component Locations & Access (p�21) .
2� Disconnect all power and signal connections from the display driver by squeezing
the locking tabs together and pulling the connectors free. It may be helpful to label
the cables or take a picture to know which cable goes to which connector when
reattaching a driver.
3� Remove the four nuts holding the driver in place.
4� Position a new driver over the screws and tighten the nuts.
5� Reconnect all power and signal connectors on the new display driver.
6� Ensure the display driver is set to the correct address.
7� Power up and test the scoreboard/display to verify the issue has been resolved.