Epson DFX-9000
Revision B
Operating Principles
Printer mechanism
63
2.2.3 Ribbon drive mechanism
The drive force from the Ribbon Feed (RF) motor is transmitted via the
Bevel Gear, Gear, and the RF Gear. The RF Gear is directly linked to the
RF Shaft, which rotates the ribbon. The RF Shaft rotates in one direction
only, regardless of which direction (right or left) the Carrier unit moves.
Ribbon jam detection
The Ribbon Feed Shaft (RFS) sensor detects the rotation of the RF shaft
directly engaged to the driven roller inside the ribbon cartridge. If a
ribbon stops feeding, the RFS sensor detects that the RF shaft has
stopped. Printing stops, and a “Ribbon Jam” error message is displayed
on the control panel LCD.
Ribbon installation detection
The Ribbon Mechanical Switch (RMS) switch is pressed down when a
ribbon cartridge is installed. If the switch is not pressed down at power-
on, the printer indicates an error (“Ribbon out”) and will not continue
the initialization operation.
Figure 2-6. Ribbon Drive Mechanism
RF Shaft
Gear
Bevel Gear
RF Motor
RMS
Switch
RFS Sensor
RFS Shaft
RF Gear
Summary of Contents for DFX-9000
Page 1: ...EPSONDFX 9000 Serial Impact Dot Matrix Printer SEDM04003 SERVICE MANUAL ...
Page 8: ...C H A P T E R 1 PRODUCT DESCRIPTION ...
Page 61: ...Epson DFX 9000 Revision B Product Description Dimensions and weight 54 ...
Page 62: ...C H A P T E R 2 OPERATING PRINCIPLES ...
Page 99: ...Epson DFX 9000 Revision B Operating Principles Circuit operation 92 ...
Page 100: ...C H A P T E R 3 TROUBLESHOOTING ...
Page 104: ...Epson DFX 9000 Revision B Troubleshooting Overview 97 Mechanism initialization e e e e e ...
Page 107: ...Epson DFX 9000 Revision B Troubleshooting Overview 100 PAPER FEEDING FF APG APPROACH ...
Page 130: ...C H A P T E R 4 DISASSEMBLY AND ASSEMBLY ...
Page 218: ...C H A P T E R 5 ADJUSTMENT ...
Page 263: ...Epson DFX 9000 Revision B Adjustment Additional functions 256 ...
Page 264: ...C H A P T E R 6 MAINTENANCE ...
Page 286: ...C H A P T E R 7 APPENDIX ...
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Page 324: ...EPSON DFX 9000 Revision B Appendix Component Layout 317 7 4 Component Layout ...
Page 333: ...EPSON DFX 9000 Revision B Appendix Parts list 326 ...