Daktronics BA-515, Руководство пользователя, Страница: 52 / 208

If the panel is not held in place, it could drop immediately when the screw is removed,
possibly damaging LEDs or the digit harness. (A stud insert on the back of the digit panel is
designed to minimize damage from dropping.)
Component location varies with each scoreboard model, but drivers, power and signal
components are typically mounted inside the scoreboard behind an access panel or a digit.
With a non-digit access panel, simply remove the top, side and bottom screws holding it in
place. Some panels are hinged and swing open when the screws are removed or loosened.
Note: Disconnect power before servicing the display. Power should also be disconnected
when the display is not in use. Prolonged power-on may shorten the life of some electronic
components
.
Replacing a Digit
The digit circuit board, the platform for the LEDs, is mounted to the back of the digit panel.
See
Figure 11 below. Do not attempt to remove individual LEDs. In the case of a
malfunctioning board, replace the entire digit panel.
To remove a scoreboard digit, follow these steps:
1. Open the digit panel as described in
the preceding section.
2. Disconnect the power/signal
connector from the back of the digit.
Release the connector by squeezing
together the locking tabs as you pull
the connector free.
Figure 11: Digit Assembly
3. The digits are secured to the inside of
the panel with fixed machine screws,
spacers, and push nuts. Remove the
nuts and lift the digit off the standoff
screws. (The push nuts can be
removed in several ways, but
Daktronics recommends using a
9
/
32
"
nut driver.)
4. Position a new digit over the screws
and tighten the nuts.
5. Reconnect the power/signal
connector.
Note: This is a keyed connector
Β
it
will attach in one way only. Do not
attempt to force the connection!
6. Close and secure the digit panel
and test the scoreboard.
Scoreboard Maintenance and Troubleshooting
48