Scanner  | LED exposure lamp  | 
SBU (3-line CCD with 600 dpi resolution)  | |
Scanning Mechanism  | Scanner motor (dual-phase stepper motor)  | 
Wire pulleys  | |
Scanner HP sensor  | |
Original Size Detection  | APS (Length Sensor x1)  | 
Miscellaneous  | Anti-condensation heater (option)  |