Table 2-6. Pump Mechanism Operation
PF Motor Rotational Direction
Operation
Clockwise (CW)
forward rotation
r
Color absorption
r
Wiper reset
r
Carriage lock reset
Counterclockwise (CCW)
backward rotation
r
Monochrome absorption
r
Wiper set
r
Carriage lock set
The pump draws ink from the printhead nozzles and drains it into the waste ink drain tank. The printer
performs this operation to eliminate dust or bubbles within the nozzles. The figure below illustrates pump
operation. When the paper feed drive motor rotates CW (forward), the color pulley pumps in the wheel pump
unit rotate in the direction of the arrow while squeezing the ink tube to push the ink inside the tube out to the
waste ink drain tank. When the motor rotates CCW (backward), the black pulley pumps in the wheel pump
unit rotate in the direction of the arrow while squeezing the ink tube to push the ink inside the tube out to the
waste ink drain tank. There are 2 pump rollers in the pump unit, and the drive power is supplied from the
paper feed motor via the pump drive gear (D/E gear), which is moved by carriage operation. In the pump
unit, the transmission gear supplies both the black and color pulley, which are rotated by the rotation of each
other.
I nk Draining
V a cu u ming
Pump Motor (CW) : Color Pumping
No ink dra in ing
No va cuu min g
Pump Motor (CW): Black No Pumping
I nk Draining
V a cu u ming
Pump Motor (CCW) : Black Pumping
No ink d raining
No va cu umin g
Pump Motor (CCW): Color No Pumping
Figure 2-12. Pump Operation
Operating Principles
Stylus Pro Service Manual
2-10
Rev.A
Содержание Stylus pro 7700m
Страница 1: ...EPSON COLOR INKJET PRINTER Stylus Pro SERVICE MANUAL EPSON 4004825 ...
Страница 121: ...A 2 CIRCUIT DIAGRAMS Figure A 2 C164 MAIN Board Circuit Diagram 1 Stylus Pro Service Manual Appendix Rev A A 7 ...
Страница 122: ... 5 IC6 Q2 R135 and CN13 are not mounted on the C164 MAIN Board Stylus Pro ...
Страница 123: ...Figure A 3 C164 MAIN Board Circuit Diagram 2 Stylus Pro Service Manual Appendix Rev A A 9 ...
Страница 124: ...Figure A 4 C137 PSB Board Circuit Diagram Stylus Pro Service Manual Appendix Rev A A 11 ...
Страница 125: ...Figure A 5 C137 PSE Board Circuit Diagram Rev A A 12 A 12 Rev A ...
Страница 126: ...Figure A 6 C137 PNL Board Circuit Diagram Stylus Pro Service Manual Appendix Rev A A 13 ...
Страница 127: ...A 3 CIRCUIT BOARD COMPONENT LAYOUTS Figure A 7 C164 MAIN Board Component Layout Rev A A 14 A 14 Rev A ...
Страница 128: ...Figure A 8 C137 PSB PSE Board Component Layout Stylus Pro Service Manual Appendix Rev A A 15 ...
Страница 129: ...Figure A 9 C137 PNL Board Component Layout Rev A A 16 A 16 Rev A ...
Страница 130: ...A 4 EXPLODED DIAGRAMS Figure A 10 Stylus Color Pro Exploded Diagram 1 Stylus Pro Service Manual Appendix Rev A A 17 ...
Страница 131: ...Figure A 11 Stylus Color Pro Exploded Diagram 2 Rev A A 18 A 18 Rev A ...
Страница 132: ...Figure A 12 Stylus Color Pro Exploded Diagram 3 Stylus Pro Service Manual Appendix Rev A A 19 ...
Страница 139: ...EPSON Printed in Japan 95 05 30 A ...