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Major Components
Following shows major components of document exposure system.
Item
Notation
Specification/function
Scanner motor
M21
Pulse motor: controls the carriage drive
CCD HP sensor
S22
Detects CCD home position
Copyboard Cover Open/Closed Sensor (front)
S21
Ends original size identification with the copy board cover at 5 deg
Copyboard Cover Open/Closed Sensor (rear)
S26
Detects the copyboard cover open/close. Starts original size identification with the copy board cover at 30 deg.
Original Size Sensor 0
S24
Helps identify original size(AB, INCH/AB/K, A)
Original Size Sensor 0
S29
Helps identify original size(INCH/A)
Original Size Sensor 1
S25/28
Helps identify original size(AB, INCH/AB/K, INCH/A, A)
CCD unit
-
Indirect exposure by LED (LED & photoconductive body)
Reader Heater (Option)
H5
Prevents condensation on the copyboard glass
Reader relay PCB
PCB2
Controls the reader unit drive and image process