Daktronics BA-515, Руководство пользователя, Страница: 63 / 208

Section 9: Team Name Message Center
Maintenance
IMPORTANT NOTES:
1. Disconnect power before doing any repair or maintenance work on the message centers.
2. Permit only qualified service personnel to access the internal electronics of the display.
3.
Disconnect power when the scoreboard is not in use.
9.1 Team Name Message Center System Overview
Team name message centers (TNMCs) are available in two sizes: an 8 x 32 matrix model with
four 8 x 8-pixel modules, and an 8x48 model comprised of six 8 x 8 modules.
Figure 15 ,
below, illustrates the larger unit. Light emitting diodes (LEDs) – tiny, solid-state lighting
units – illuminate the displays.
Figure 15: 8x48 Team Name Message Center
The message centers feature an array of red or amber LEDs, and are capable of displaying
characters up to 10" high. Pixels in the red TNMC consist of a three-LED cluster, while amber
TNMCs use four-LEDs per pixel.
The four-module TNMC measures approximately 1' - 2" tall by 3' - 8" wide, while the six-
module TNMC measures approximately 1' - 2" by 5'-6" wide; both have an in-cabinet depth
of about 4". The smaller units weigh about 80 pounds per pair, and the larger TNMC sets add
about 120 pounds to scoreboard weight.
TNMCs are typically installed in pairs. Although the message centers customarily are used
for team names (home and guest), they are programmable and can display any type of
caption. Characters are shown on a single line and either single- or double-stroke fonts may
be used for the caption or name.
9.2 Maintenance and Troubleshooting Overview
Standard Daktronics outdoor LED scoreboards typically are front-accessible, but some
models may be ordered with rear service access. For that reason, Daktronics team name
message centers have been designed so that they may be accessed from both the front
and
rear for easy maintenance and repair of internal components.
TNMC Maintenance
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