Epson Stylus Pro 7000 Series, Service Manual, Page: 67 / 231

EPSON Stylus Pro 7000 Revision B
Operating Principles Description of Components 67
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.
INK-RELATED SENSORS
The following sensors are located in the ink cartridge compartments.
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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
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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
Figure 2-14. Ink Cartridge Holder Sensors
C H E C K
P O I N T
If you are familiar with the EPSON Stylus Pro 9000, you should
quickly notice a few differences, including the missing ink
valve, missing ink-type sensor, missing ink color sensor and
missing ink ID sensor.
Ink Low Sensor
Ink Cartridge Ink Cartridge Sensor