Daktronics CR-2004, Руководство пользователя, Страница: 32 / 90

26 Scoreboard Troubleshooting
When troubleshooting driver problems, three LEDs labeled DS1 , DS2 , and DS3 in Figure 18 ,
provide the following diagnostic information:
LED Color Function Operation Summary
DS1 Green Power Steady on DS1 will be on and steady to
indicate the driver has power.
DS2 Red Signal RX Steady on
or blinking DS2 will be on or blinking when the
driver is receiving a signal and off
when there is no signal.
DS3 Amber Status Blinking DS3 will be blinking at one second
intervals to indicate the driver is
running.
Note: While it is necessary to have the scoreboard powered on to check the LED
indicators, always disconnect scoreboard power before servicing.
Replacing a Driver
1. Open a digit or access panel as described in Section 5.2 .
2. Remove the metal cover from the driver enclosure.
3. Disconnect all connectors from the driver by squeezing together the locking tabs and
pulling the connectors free.
Note: It may be helpful to label the cables to know which cable goes to which
connector when reattaching the driver.
4. Remove the screws or nuts securing the driver to the inside of the enclosure.
5. Carefully lift the driver from the display and place it on a clean, flat surface.
6. Position a new driver over the screws and tighten the nuts.
7. Reconnect all power/signal connectors.
Note:
The connectors are keyed and will attach in one way only. Do not attempt to
force the connections.
Figure 18: Driver Status Indicators