Chapter 2
Operating Principle
2.1 Printer Mechanism Operating Principles .......................................... 2-1
2.1.1 Printing Mechanism ................................................................... 2-1
2.1.2 CR (Carriage) Mechanism.......................................................... 2-3
2.1.3 PG (Platen Gap) Adjustment Mechanism ................................. 2-4
2.1.4 Ribbon Feed/Ribbon Shift Mechanism ..................................... 2-6
2.1.4.1 Ribbon Feed Mechanism.................................................. 2-7
2.1.4.2 Ribbon Shift Mechanism................................................... 2-7
2.1.5 Paper Feed Mechanism ............................................................. 2-9
2.1.5.1 Core of the Paper Feed Mechanism ................................. 2-9
2.1.5.2 Paper Feed Sensor Mechanism ..................................... 2-10
2.1.5.3 Release Mechanism ....................................................... 2-12
2.2 Circuit Operating Principles............................................................. 2-13
2.2.1 Power Supply Voltage.............................................................. 2-13
2.2.2 Power Supply Circuit Operation ............................................. 2-14
2.3 Controller Circuit .............................................................................. 2-15
2.3.1 Interface Circuit........................................................................ 2-17
2.3.2 Reset Circuit ............................................................................. 2-18
2.3.3 Memory Back-up Circuit .......................................................... 2-19
2.3.4 Ribbon Motor Controller/Driver Circuit .................................. 2-20
2.3.5 PF (Paper Feed) Motor Controller/Driver Circuit.................... 2-21
2.3.6 CR (Carriage) Motor Controller/Driver Circuit........................ 2-22
2.3.6.1 Bi-D Adjustment Function ............................................... 2-24
2.3.6.2 Interlock Function ........................................................... 2-24
2.3.7 Printhead Controller/Driver Circuit ......................................... 2-25
2.3.8 Control Panel Circuit................................................................ 2-26
2.3.9 PG (Platen Gap) Motor Driver Circuit ..................................... 2-27
2.3.10 Paper Thickness Detecting Circuit ....................................... 2-28
2.3.11 Paper Jam Sensor .................................................................. 2-29
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 ...