Epson 3800 Service Manual - Page 45

EPSON Stylus Pro 3800/3800C/3850 † Pump Unit The ink is absorbed from the head nozzles. The sucked waste ink is conveyed to the waste ink pad through the tube. The CW rotation of the pump motor rotates the conveyance roller. The roller rotates pressing the tube to convey the waste ink from the cap unit to the waste ink pad. The CCW rotation of the pump motor moves the conveyance roller away from the pressing position. Head Nozzle Revision A † Head Cleaner The head cleaner wipes off ink, dirt or the like from the surface of the head nozzles. The CW rotation of the pump motor moves the head cleaner to the wiping position. Head Cleaner Conveyance Roller To Waste Ink Pad Figure 2-13. Pump Unit Mechanism OPERATING PRINCIPLES Intermittent Gear, 21.5 Combination Gear, 13.5, 10 Combination Gear, 13.5, 10 Combination Gear, 16, 11.5 Spur Gear,13 Spur Gear, 26.5 Spur Gear, 21.5 Combination Gear,15.5, 9.5 Pinion Gear (Pump Motor) Figure 2-14. Head Cleaner Mechanism Cleaning Mechanism 45