Daktronics TI-2025 Segment Timer - Manual (Page 15)

Scoreboard Troubleshooting 9
4.3 Replacing Digits
LEDs are embedded in a circuit board
that is mounted to the back of the timers’
face panels, as shown in Figure 4. Do not
attempt to remove individual LEDs.
In the case of a malfunctioning LED or
digit segment, replace the entire digit
circuit board.
To replace a digit circuit board:
1. Open the back panel as
described in Section 4.2.
2. Disconnect the power/signal
plug from the back of the digit
by squeezing together the
locking tabs and pulling the
connector free.
3. Use a 9 /
32
" nut driver to remove the nuts securing the digits to the inside of the panel,
and then lift the digit off the studs.
4. Position a new digit over the studs, making sure the rubber side of the rubber-backed
spacer is facing the digit circuit board.
5. Tighten the nuts.
6. Reconnect the power/signal connector.
Note: This is a keyed connector and it will attach in one way only. Do not attempt to
force the connection.
7. Close and secure the back panel, then power up and test the scoreboard to see if
changing the digit has resolved the problem.
4.4 Adjusting the Horn Volume
The horn volume is set at its maximum level at the factory. If the horn is too loud, reduce its
volume by adjusting the set screw mounted in the front of the horn. A plastic tip on the screw
touches the horn's diaphragm, reducing the volume. Turn the screw clockwise and test the
volume by operating the horn from the scoreboard control console. Continue adjusting and
testing until the desired volume level is obtained.
Figure 4: Digit Assembly