Daktronics TI-2002, Руководство пользователя

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Troubleshooting
7
LED Color Function Operation Summary
DS1 Red Signal RX
Steady on
or blinking
DS1 will be on or blinking when the driver is
receiving a signal and off when there is no signal.
DS2 Green Power Steady On
DS2 will be on and steady to indicate the driver has
power.
Note: While it is necessary to have the display powered on to check the LED status
indicators, always disconnect power before servicing.
Replacing a Driver
If the driver status indicators do not appear to be working correctly, it may be necessary
to replace the driver.
1� Open the front access panel as described in Component Location & Access (p�6) .
2� Disconnect all plugs from the driver by squeezing together the locking tabs 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 attaching the new driver.
3� Remove the nuts securing the driver to the inside of the enclosure.
4� Carefully lift the driver from the display and place it on a clean, flat surface.
5� Position a new driver over the studs and tighten the nuts.
6� Reconnect all plugs to their mating jacks on the driver. These are keyed connectors
and will attach in one way only. Do not force the connections.
7� Ensure the new driver is set to the correct address. This will be the same address of the
old driver being replaced. Refer to Setting the Driver Address (p�7) .
8� Close and secure the front access panel, then power up and test the display to verify
the issue has been resolved.
Setting the Driver Address
Since the same LED drivers can be used for many display
models, each driver must be set to receive the correct signal
input, or address, for the model being used.
The TI-2002 uses
Address 97 . This address is set with jumper
wires in a 12-pin plug which mates with jack J19 on the driver
( Figure 4 ). It may be possible to reuse the same address plug
from the driver that was replaced. If not, order a fully-loaded
address plug (Daktronics part # 0A-1150-0064) and set it to
Address 97 by cutting the following pins: 3 (red), 5 (orange), 6
(tan), 8 (pink), and 12 (black).
Segmentation & Digit Designation
Reference Drawings:
Segmentation, 7 Segment Bar Digit ................................................................... DWG-38532
In each digit, certain LEDs always go on and off together. These groupings of LEDs are
referred to as segments. DWG-38532 in Appendix A details which connector pin is wired
to each digit segment and the wiring color code used throughout the display.
The mechanical/electrical spec drawing in
Appendix A specifies the driver connectors
controlling the digits. Numbers shown in hexagons in the upper half of each digit indicate
which connector is wired to that digit.
Figure 4: J19 Address Jack