Service manual

LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 4.0 THEORY OF OPERATION
4-4
4.4.5 Indicator Board
The Indicator Board contains two LED indicator lamps which are used to signal scanner power ON and
SCAN status. The SCAN indicator is turned on only while a scan is in process; it also blinks whenever the
plate is in the optical path.
4.4.6 Indicator/FF Interface Board
The Indicator/FF Interface Board provides an adjustable drive circuit for the Reference LED Board.
4.4.7 Reference LED Board
The Reference LED Board provides a means of mounting the blue reference LED and a connector. The
blue LED provides a consistent reference signal for purposes of self-alignment by the electronics.