(c) Sensor Input Circuit
■ Paper Empty Sensing
The Paper empty sensor on the tray detects the state of paper empty and the state of paper width i.e. narrow
paper width or not.
■ Regi Sensing
N/A
■ Paper Feeding
When paper passes the actuator (feed sensor part), it detects the signal by use of a Photo interrupter,
informs the CPU, and synchronizes the image data after a predetermined time.
If it doesn’t detect the feed sensor within 1sec. after paper is fed, paper Jam0 is occurred (LED will be display
Orange color).
■ Paper Exit Sensing
N/A
■ Cover Open Sensing
The Cover open sensor is located on the HVPS. After the top cover is opened, +24VS (Solenoid, Main Motor,
Polygon motor part of LSU and HVPS), which is supplied to the each unit, is cut off.
In case, the red light will will be ON to inform the end-user.
■ SOLENOID Driving
The clutches are driven by turning on the TRs, which is controlled by the CPU. The diode in the Clutch
driving circuits protects TR driven from the noise, which may occur when the solenoid is de-energized.
■ Motor Driving
The main motor driving circuits is on the main board
There is motor driver IC on the main board, to control the step motor.
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