THEORY GUIDE Scan/Erase
10DEC05
TG4825-1
Page
73 of 120
REFERENCE SENSOR S9
The REFERENCE SENSOR S9 checks for a FLAG on the EXTRACTION BAR that provides
the SLOW SCAN AY with the reference position. All other positions of the SLOW SCAN AY
are relative to the reference position.
PLATE PRESENT SENSOR S5
After the PLATE is fastened by the EXTRACTION BAR, it is pulled down by the SLOW SCAN
AY. The PLATE moves between the EMITTER and DETECTOR of the PLATE PRESENT
SENSOR S5. The MSC BOARD A1 reads the status of the SENSOR and determines if a
PLATE is loaded before continuing the slow scan operation.
SLOW SCAN MOTOR
The SLOW SCAN MOTOR is a 3-phase DC MOTOR that provides all vertical motion of the
PLATE necessary for scanning and erasing operations.
H194_5038BC
LEAD SCREW
COIL BOARD A7
MAGNET
FLYWHEEL
ENCODER
fixed to shaft
COIL BOARD CABLE
ENCODER CABLE
RS-232
connection to
MSC BOARD A1
SLOW SCAN
CONTROLLER
BOARD
A3
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