Operating Principles
Rev. A
2-31
Front paper sensor
Front paper sensor detects TOF position as well as paper presence condition. It uses a
photo interrupter system. However, one end of the detecting lever is mechanically used to
detect the leading edge of the paper, and the other end is to cut in between the photo
interrupter sensor to detect paper. The output signal is pulled up to 10 K
, then input to
the CPU port via the filter circuit which consists of the resistor and the condenser.
Table 2-24. Front Paper Sensor Specification
Detecting method
Photo interrupter systems
Output system
Open collector system
Resistance to voltage:30V or less
Sink current : 0.3 mA or less
Detecting mode
Paper detected : LOW
No paper detected : HIGH
Right/left PEW sensor
Right/left sensors are located on the left and right column direction with the CR on the
mask guide in between. They don’t only detect paper but the paper width so as to
determine the right and left margins. The output signal is output to the CPU A/D
converter.
Table 2-25. Right/left PEW Sensor Specification
Detecting method
Photo micro sensor system
Output system
Collector
Power supply voltage
5 VDC
5%
CR home position sensor
The output signal for this sensor is pulled up to 10K
, then input to the CPU A/D
converter via the filter circuit which consists of the resistor and the condenser.
Table 2-26. CR Home Position Sensor Specification
Detecting method
Photo coupler system
Output system
Open collector system
Resistance to voltage:30V or less
Sink current : 0.3 mA or less
Power supply voltage
5 VDC
5%
Switching mode
In the home position : LOW
Off the home position :HIGH
Release sensor
The output signal for this sensor is pulled up to 6.2K
, then input to the CPU port via the
filter circuit which consists of the resistor and the condenser.
Table 2-27. Release Sensor Specification
Detecting method
Leaf switch (mechanical) system
Rated current/voltage
0.6 to 1.0mA, 5VDC
5%
Switch mode
Cut sheet mode : Close
Continuous paper mode : Open
Paper jam removal mode : Open
Summary of Contents for DLQ-3000+
Page 1: ...EPSON EPSON EPSON France S A SERVICE MANUAL DLQ 3000 PRODUIT ...
Page 2: ...EPSON 24 PIN DOT MATRIX PRINTER EPSON DLQ 3000 SERVICE MANUAL SEIKO EPSON CORPORATION 4008259 ...
Page 6: ...v REVISION SHEET Revision Issued Data Contents Rev A August 21 1997 First Release ...
Page 62: ...2 3 12 Other Sensor Circuits 2 30 ...
Page 160: ...Chapter 6 Maintenance 6 1 Maintenance 6 1 6 1 1 Lubrication and Adhesion 6 1 ...
Page 171: ...DLQ 3000 Rev A A 6 ...
Page 172: ...Appendix Rev A A 7 A 2 Circuit Diagrams Figure A 2 C210 MAIN Board Circuit Diagram 1 2 ...
Page 173: ...DLQ 3000 Rev A A 8 ...
Page 174: ...Appendix Rev A A 9 Figure A 3 C210 MAIN Board Circuit Diagram 2 2 ...
Page 175: ...DLQ 3000 Rev A A 10 ...
Page 177: ...DLQ 3000 Rev A A 12 Figure A 5 C124 PSB Board Circuit Diagram ...
Page 180: ...Appendix Rev A A 15 Figure A 8 C210 MAIN Board Component Layout 2 2 ...
Page 181: ...DLQ 3000 Rev A A 16 Figure A 9 C124 PSB Board Component Layout ...
Page 182: ...Appendix Rev A A 17 Figure A 10 C124 PSE Board Component Layout ...
Page 189: ...EPSON SEIKO EPSON CORPORATION ...
Page 254: ...PC 437 USA Europe standard Annexe A 27 ...
Page 255: ...PC 850 Multilingue PC 860 Portugais PC 863 Français canadien PC 865 Norvégien A 28 Annexe ...
Page 256: ...PC861 Islandais BRASCII Portugais brésilien Abicomp Portugais brésilien Annexe A 29 ...
Page 259: ...A 32 Annexe ...
Page 262: ...Utilisation du sommaire des commandes A 10 V Vitesse 2 25 W Windows Microsoft 1 17 18 Index 3 ...