Paper Detection - Epson DFX-9000 Service Manual
Serial impact dot matrix printer
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Also See for DFX-9000:
- Repair manual (223 pages) ,
- Reference manual (198 pages) ,
- User manual (28 pages)
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Epson DFX-9000
2.2.4.2 Paper detection
Paper is detected by sensor levers located on the tractors, and reflective
sensors on the Card guide and Paper eject unit.
Paper sensor
The photo sensors on the tractors are shielded or unshielded by the
movement of the sensor-lever. If paper is not loaded, the sensor lever
shields the sensor to indicate that paper is not set on the tractor.
Operating Principles
Front
tractor
Printer mechanism
Sensor Lever
Photo Sensor
Rear Tractor
Sensor Lever
Photo Sensor
Figure 2-9. Paper detection 1
Revision B
66
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