THEORY GUIDE Scan/Erase
10DEC05
TG4825-1
Page
74 of 120
The following components control the operation of the SLOW SCAN MOTOR:
Component Description
SLOW SCAN
CONTROLLER
BOARD A6
Controls the motions of the SLOW SCAN MOTOR. The COIL BOARD
A7 and the ENCODER connect to this BOARD. Normally, the
parameters of motion of the MOTOR include:
• direction of motion - clockwise or counterclockwise
• number of counts of the ENCODER that the MOTOR must move
• acceleration
• running speed
• deceleration
SLOW SCAN
MOTOR
Includes:
• STEEL PLATE - operates with the COIL BOARD A7 to generate
the MAGNET that causes torque in the SLOW SCAN MOTOR
• COIL BOARD A7 - keeps the correct rotation of the SLOW SCAN
MOTOR
• MAGNET/FLYWHEEL - a steel CYLINDER with a MAGNET at the
top end that adds rotating mass to the MOTOR and makes the
rotation smooth
ENCODER Monitors the speed and position of the MAGNET to provide:
• smooth operation of the MOTOR
• speed of the MOTOR that does not change
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