Epson 7000 service manual Ink Supply Mechanism, INK-RELATED Sensors, Ink Low Sensor

EPSON Stylus Pro 7000 Revision B

2.2.5 Ink Supply Mechanism

There is only one ink cartridge holder for all six cartridges. The design of the holder makes it quite easy to install and replace ink cartridges from the front of the printer. To prevent users from accidently installing a color ink cartridge in the wrong slot, the cartridges have slightly different designs.

Before moving the printer you or the user now has to flush the ink system as described in “Transportation Mode” on page 53.

C H E If you are familiar with the EPSON Stylus Pro 9000, you should

PO I quickly notice a few differences, including the missing ink valve, missing ink-type sensor, missing ink color sensor and missing ink ID sensor.

INK-RELATED SENSORS

The following sensors are located in the ink cartridge compartments.

†Ink Cartridge sensor

This optical sensor is built in all six ink cartridge slots. When a cartridge is installed, switch = closed

When a cartridge is not installed, switch = open

†Ink Low sensor

This mechanical sensor (microswitch) is at the bottom of all six ink cartridge slots and detects when ink is running out.

When the I/C is nearly empty, the switch = open When the I/C is not low (normal), the switch = closed

Ink Cartridge Ink Cartridge Sensor

Ink Low Sensor

Figure 2-14. Ink Cartridge Holder Sensors

Operating Principles Description of Components 67