Epson Stylus COLOR 3000 Service Manual

Operating Principles
EPSON Stylus Color 3000 Service Manual
2-10
Pump
The pump motor and pump unit make up the pump, which absorbs viscous ink from the printhead nozzles
and drains it to the waste ink drain pad through the cap. Since this printer has only one pump, it is used for
both black and color ink by alternating the rotational direction of the pump motor. When the pump motor
rotates forward (the direction in which paper is fed), it absorbs black ink. When it moves backward, it pumps
color ink. The pump unit is composed of the pulley, tube, and 2 rollers, as shown in Figure 2-10. To pump
ink, the pulley rotates the rollers, which squeeze the tube, reducing the volume to produce a vacuum. This
vacuum drains the ink into the waste ink drain pads.
Item Description
Motor type 4-phases / 48-pole / PM type stepping motor
Drive voltage
42 VDC ± 5% (Applied to the driver)
Coil resistance
7.7 Ω ± 10% (at 25°C per phase)
Connection Bipolar
Active mode  2-2 phase, 1-2 phase, W1-2 phase,
 Constant current drive
Drive frequency 281 to 1250 Hz
Drive current
825 mA (at fast absorption)
500 mA (at slow absorption)
Pulley
Ink Draining
Ink Drawing
Pump Motor (Backward): Color Ink Drawing
Pump Motor (Forward): Black Ink Drawing
Ink Draining
Ink Drawing
Pulley
No Ink Draining
No Ink Drawing
No Ink Draining
No Ink Drawing
Pump Motor (Forward): No Color Ink Drawing
Pump Motor (Backward): No Black Ink Drawing
Figure 2-10. Pump Operation
Table 2-6. Pump Motor Specification

Epson Stylus COLOR 3000 Specifications

Printing Resolution

maximum resolution	1440 x 720 dpi
driver setting resolution	720 x 720 dpi
printable width	410 mm

Paper Handling

paper capacity (plain paper)	100 sheets
paper capacity (EPSON Inkjet transparencies)	30 sheets
paper capacity (envelopes)	10 envelopes

Ink Cartridges

black ink cartridge print capacity	Up to 3, 000 pages (A4, text @ 360dpi)
colour ink cartridges print capacity	Up to 2, 100 pages (A4, 360dpi 5% duty each colour)
colour ink cartridges	Cyan, Magenta, Yellow

Operating Environment

operating temperature	10-35°C
operating humidity	20-80% RH
total print volume	75, 000 pages (A3, text only)

Electrical Specifications

rated voltage	AC 220V-240V
rated frequency	50-60 Hz
power consumption	Approx. 21W (ISO 10561 letter pattern)

Weight and Dimensions

weight	18 Kg
width	810 mm
depth	565 mm
height	240 mm