Daktronics FB-2500 Series, Руководство по обслуживанию

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TNMCs & Electronic Captions
23
Rear Access
1� To access the internal components from the rear, remove the appropriate rear-
access panel from the display cabinet by loosening all four of the screws.
2� Slide the access panel sideways and carefully lift it off the loosened screws.
Note: Be careful when removing and handling the access panels as internal display
components may still be attached to them.
The display driver and primary power supply will always be located behind the first
access panel on the right, when viewing the display from behind ( Figure 20 ). Any
additional power supplies are noted in the appropriate component location drawing.
Primary
Power
Supply
Display
Driver
Figure 20: Display Cabinet Rear Access Panels
Display Drivers
Reference Drawings:
Address Table: Driver - MCAST G2 - TNMC Switch .......................................... DWG-328274
Specifications; Driver, MCAST, 4 Col ................................................................. DWG-793970
Power and Address Details; Outdoor Tennis Scoreboards .......................... DWG-1202417
The display driver, detailed in DWG-793970 in Appendix B , receives signal from the
control console and sends data to the modules. Figure 21 illustrates some of the primary
jacks, switches, and diagnostic LEDs on the 4-Column MCAST driver used for TNMC and
electronic caption functions.
Signal IN
(TB1)
Power IN
(J20)
DS1 TX
DS2 RX
DS3
POWER
DS4
STATUS
TNMC Address
(S2)
Team Name Output
(J17)
Figure 21: 4-Column MCAST Driver