Epson Stylus Pro 9000 Service Manual - Page 29
Paper Feed Sensors, Rear Paper, Sensor, Paper Thickness, Paper Release, Lever, Front Paper
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EPSON Stylus Pro 9000 PAPER FEED SENSORS The printer relies on the following sensors for paper feeding: Front Paper Sensor This optical sensor is attached to the back side of the Lower Paper Guide, and detects the front edge (top or leading edge) of the paper. Rear Paper Sensor This optical sensor is attached to the back side of the Lower Paper Guide, and detects the rear edge (bottom or trailing edge) of the paper. Paper Release Lever Position Sensor The Paper Release Lever is located on the right side of the printer, and the sensor attaches to the bottom of the lever, inside the right-side frame. This sensor's signal is ON when the lever is in down, which allows the printer to print. Rear Paper Sensor Paper Thickness Sensor Paper Release Lever Technical Overview Front Paper Sensor Paper Release Lever Position Sensor Figure 2-10. Paper Feed Sensors 29