Daktronics CR-2004, Display Manual

Page: 23 / 90

Electrical Installation 17
4.3 Power-On Self-Test (POST)
The scoreboard performs a self-test each time that power is turned on and the control console
is powered off or not attached to the scoreboard. If the control console is attached and
powered on, the self-test does not run, and data from the control console is displayed on the
scoreboard after a brief period of time. Each scoreboard self-test pattern will vary depending
on the scoreboard model, the number of drivers and types of digits.
Figure 13 shows an
example of the LED bar test pattern that each digit performs.
Figure 12: Power Enclosures w/ Covers Removed (240 V & 120 V)
Figure 13: Digit Segment POST