Daktronics ColorSmart BB-3115, Руководство по обслуживанию, Страница: 17 / 34

TNMC and Electronic Caption Troubleshooting
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Troubleshooting
The table below lists potential problems with the display and indicates corrective actions.
This list does not include every symptom that may be encountered, but it does present
several of the most common situations that may occur.
Problem Solution/Items to Check
One or more LEDs on a single
module fails to light or turn off
Check/replace the ribbon cables on the module.
Replace the module. See
Replacing a Component
(p�14) .
A section of the display is not
working; section extends all the
way to the right side of the display
Replace the first module on the right side of the first module
that is not working. See Replacing a Component (p�14) .
Replace the second module that is not working. See
Replacing a Component (p�14) .
Replace the power supply assembly on the first module that
is not working. See Replacing a Component (p�14) .
Check/replace the ribbon cables running to the first
module that is not working.
One row of modules does not work
or is garbled.
Replace the first module. See Replacing a Component
(p�14) .
A group of modules which shares
the same power supply assembly
fails to work.
Replace the power supply assembly. See Replacing a
Component (p�14) .
Entire display fails to work.
Check for proper line voltage into the power termination
panel.
Check/replace the ribbon cable from the driver to the
modules.
Check the voltage settings on the power supplies.
Check/replace the signal cable to the driver.
Power and Signal Summary
Reference Drawings:
Address Table; Driver- MCAST- TNMC DIP Switch ............................................ DWG-284773
Schematic; 3/4” (6”) M-CAST TNMC Set Or Electronic Caption ................. DWG-1133307
Assembly and Pwr/Sig Routing; 3/4” TNMC, MCAST .................................... DWG-1133639
Refer to DWG-1133307 and DWG-1133639 in Appendix C for detailed assembly and
schematic diagrams about display power and signal routing of displays with 3/4" pixel
spacing.
Display signal routing can be summarized as follows:
1� Data from the All Sport console travels via signal cable (or radio) into the scoreboard.
2� The signal then travels through the driver and out to the first LED module of the Home
display via ribbon cable harness.
3� The signal relays from module to module via ribbon cable in daisy-chain style until it
reaches the last module in the Guest display. In electronic captions, the Home and
Guest displays receive signal from separate drivers.