Epson 7000 service manual Maintenance Assembly, Flushing box Pump

EPSON Stylus Pro 7000 Revision B

2.2.3 Maintenance Assembly

The maintenance assembly for the SP 7000 is similar to the maintenance assembly in the EPSON Stylus Pro 9000. If you are not familiar with the SP 9000, see the following for a detailed description.

See Figure 2-5 on page 59 for an illustration of the cleaning. The main components are:

„Pump Assembly (head cleaner)

„Pump Motor (stepping motor)

„Cap Assembly (B head/C head independent)

„Flushing Box

„Waste Ink pads

The cleaning mechanism components are installed above the subframe and some are fixed on the main frame as shown below.

Flushing box	Pump	Pump
	Motor	rotation = CW

CR Lock HeadCap Assembly

Cleaner Pump Assembly

Figure 2-13. Cleaning Mechanism Components

†Pump assembly (head cleaner)

When the head is in the capped position (valve closed), the pump motor creates a vacuum that sucks ink from the nozzles. This is used for removing ink from the nozzles and nozzle plate, initial ink charge, as well as cleaning. The waste ink flows through two small tubes to the waste ink pads.

†Head cleaner

The head cleaner has felt on one side and rubber on the other, and is used to wipe or rub off ink and foreign materials from the nozzle surface.

†Pump motor

Clockwise rotation = pump assembly drive for cleaning and so on Counter clockwise rotation = platen gap adjustment

†Cap assembly (one pad for each printhead)

When not printing, the printheads (should) rest on the cap assembly to make sure the nozzles don’t clog. Also, the printheads are in the capped position during ink charging, cleaning, and so on.

†Flushing box

Flushing (dummy printing) is performed over the flushing box, and the flushed ink flows through the large diameter tube to the waste ink pads. Flushing fires a little ink to remove ink that may be drying on the nozzle surface; performed in between print jobs and sometimes during long print jobs.

†Waste ink pads

The waste ink pads absorb ejected ink through the pump assembly ink tubes and the flushing box tubes.

When the pads near full, the LCD displays Maintenance Call 0100. When the pads are completely full, the LCD displays Service Call 00000100. The pads must be replaced at this time.

Operating Principles Description of Components 65