Operating Principles
Rev. A
2-25
2.3.6.1 Bi-D Adjustment Function
Bi-D adjustment is performed to align dots vertically for the Bi-directional printing. This is
accomplished by delaying the print timing pulse on which the carriage moves from the 136th
column to the 1st, using the print timing pulse when the carriage moves from the 1st to
136th column as reference. Since print timing pulse varies according to the carriage speed,
the adjustment should be implemented for each speed mode. For this printer, the
adjustment can be made for the 4-fold, 2-fold and the default speeds.
2.3.6.2 Interlock Function
The mechanical cover open switch is serially connected to the common (VPA) on the CR
motor. When the printer cover is open, the interlock function acts so that the motor does not
rotate.
Summary of Contents for DLQ-3000 Minerva+
Page 1: ...EPSON 24 PIN DOT MATRIX PRINTER EPSON DLQ 3000 SERVICE MANUAL SEIKO EPSON CORPORATION 4008259 ...
Page 5: ...v REVISION SHEET Revision Issued Data Contents Rev A August 21 1997 First Release ...
Page 61: ...2 3 12 Other Sensor Circuits 2 31 ...
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 ...