Daktronics BA-1518 - Manual (Page 42)

TNMC Maintenance
and Troubleshooting 9-1
Section 9: Team Name Message Centers
Maintenance and Troubleshooting
IMPORTANT NOTES:
1. Power must be turned off before any repair or maintenance work is
done on the display!
2. Allow only qualified service personnel to access any internal display
electronics.
3. Do not operate the display with the back sheets removed! The cabinet is
positively pressurized directing adequate airflow around the lamps and out through the
lenses. Display operation without the back sheets in place and fans running could cause
damage to the display and will void the warranty. Make certain the back sheets are
fastened securely into place.
4. Dirt and contaminants may enter the display if it is operated without the fan filters
in place or with dirty fan filters. These contaminants may cause premature failure of
the electronic components. Operating the display with dirty fan filters or without fan filters
will void the warranty.
5. The Daktronics product managers engineering staff must approve any changes
that may affect the weather-tightness of the display. This is to include, but is not
limited to, border shrouding, back sheets, cooling fans, fan filter and filler panels. If ANY
modifications are made to the weather tightness of the display, detailed drawings MUST
be submitted to our engineering staff for evaluation and approval or the warranty will be
null and void.
6. Turning the power off when the display is not in use extends the life of some
components.
The team name message centers for standard (not modified for an individual customer) scoreboards are
front-accessible for service. Custom scoreboards may be accessed from the front or rear. This manual
applies to team name message centers that are used in standard scoreboards.
9.1 TNMC Schematics
Reference Drawings:
Schematic,
832-12 TNMC. ..................................................................... Drawing A-125214
Schematic, 848-12 TNMC ...................................................................... Drawing A-125216
Refer to the team name message center schematic drawings A-125214 and A-125216 located in
Appendix A.