Daktronics CR-2004 Multi-Section Cricket Scoreboard - Manual (Page 39)

TNMC Troubleshooting & Maintenance 33
Section 6: TNMC Troubleshooting & Maintenance
IMPORTANT NOTES:
1. Always disconnect scoreboard power before doing any repair/maintenance work on the
message centers.
2. Permit only qualified service personnel to access internal display electronics.
3. Disconnect power when not using the scoreboard.
6.1 Team Name Message Center System Overview
Team name message centers (TNMCs) use amber, red, or white LEDs to display team
names (home and guest) in place of vinyl captions (Figure 22). On the CR-2004, TNMCs
are also used to display the current BATSMEN names as well as a HOW OUT description.
TNMCs for the CR-2004 are available with two different pixel dimensions: 8x32 and 8x64.
Characters are shown on one line using single- or double-stroke fonts up to 10" (254 mm)
high for 34 mm TNMC units.
Matrix Size
# of
modules
Pixel Spacing Active Display Area Weight*
8x32 4 34 mm (1.3") 10.6" x 42.5" (269 mm x 1080 mm) 40 lb (18 kg)
8x64 8 34 mm (1.3") 10.6" x 85.1" (269 mm x 2162 mm) 80 lb (36 kg)
* TNMCs are typically installed in pairs; double this value to find the total added weight.
6.2 Initialization Information at Startup
Every time the display is powered up and there is no All Sport ® signal present, the display
will run through an initialization process, during which it will test all LEDs and addresses.
First, the message center will display the proper address number.
If the entire display fails at startup, power may not be properly connected, or the address
setting may not be correct on the display driver. Check both in the event of a failure.
Figure 22: Team Name Message Centers