EPSON Stylus Photo R1800/R2400
Revision B
Operating Principles
Printer Mechanism
26
The fed paper is detected by the PE Sensor, and its leading edge is then
transferred to the front of the Front Paper Guide.
To eliminate the deflection of the paper, the paper is then returned toward the
ASF Assy by the specified number of steps according to the paper feed mode.
The paper is transferred again to the specified paper locating position of the
Front Paper Guide.
2.2.4.2 PF Measurement Sequence
The mechanical load in the paper feeding path is measured in the following
cases to perform control so that an adequate current value is set according
to the mechanical load.
When power is switched on
When the Ink Cartridge is replaced
When the mechanical load in the paper feeding path reaches the specified
value, a Fatal Error is displayed.
2.2.5 Ink System Mechanism
The Ink System Mechanism consists of the following units.
Pump Unit (including the CR Lock Lever)
Cap Unit
2.2.5.1 Pump Unit
The Pump Unit is designed to suck ink from the Print Head or Cap Unit. The
Cap Unit has a built-in Head Cleaning Wiper.
The following shows the specifications of the stepping motor that drives Pump
Unit.
The following operations are performed when the drive of the Pump Motor is
transmitted to the Pump Unit.
Note "*": The direction (CW or CCW) was determined viewing the motor from the
output shaft of the motor mounting plate.
Table 2-7. Pump Motor Specifications
Item
Specifications
Type
4-phase, 48-pole PM type stepping motor
Drive voltage
+42V ± 5% (voltage applied to driver)
Winding resistance
10.3
Ω
± 10% (per phase at 25°C)
Inductance
13.4mH ± 20% (1kH,1Vrms)
Drive method
Bipolar drive/constant-current drive
Drive IC
A6628
Table 2-8. Pump Motor Rotation Directions and Functions
Pump Motor Rotation Direction*
Functions
CW direction
• Cap closing
• Ink suction
• Wiper resetting
• CR Lock setting
CCW direction
• Cap opening
• Pump release
• Wiper setting
• CR Lock resetting
Содержание R1800 - Stylus Photo Color Inkjet Printer
Страница 8: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Страница 15: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Страница 35: ...C H A P T E R 3 TROUBLESHOOTING ...
Страница 68: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Страница 128: ...C H A P T E R 5 ADJUSTMENT ...
Страница 172: ...C H A P T E R 6 MAINTENANCE ...
Страница 181: ...C H A P T E R 7 APPENDIX ...
Страница 193: ...EPSON Stylus Photo R1800 R2400 Revision B Appendix Circuit Diagram 193 C589 MAIN control circuit board 1 ...
Страница 194: ...EPSON Stylus Photo R1800 R2400 Revision B Appendix Circuit Diagram 194 C589 MAIN control circuit board 2 ...
Страница 195: ...EPSON Stylus Photo R1800 R2400 Revision B Appendix Circuit Diagram 195 C589 PSB power supply circuit board ...
Страница 196: ...EPSON Stylus Photo R1800 R2400 Revision B Appendix Circuit Diagram 196 C589 PNL circuit board ...
Страница 197: ...EPSON Stylus Photo R1800 R2400 Revision B Appendix Circuit Diagram 197 C589 PNL B circuit board ...
Страница 198: ...C H A P T E R 8 STYLUSPHOTOR2400 ...