Sensors - Epson Stylus Pro 9000 Service Manual

EPSON Stylus Pro 9000

SENSORS

The following sensors are located in the I/H compartment.
I/H Assembly sensor
This optical sensor detects the whether the door is open and the I/H
Assembly is in the install position or the door is closed and the I/H
Assembly is in the print position.
When the I/H door is open, the signal = ON
When the I/H door is closed, the signal = OFF
Ink Cartridge sensor
This mechanical sensor (microswitch) is built in all six ink cartridge slots.
When the I/C is installed, switch = closed
When the I/C 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 ID sensor
This optical sensor is located at the side of all six ink cartridge slots and
detects the which market the cartridge is for. Although not implemented
currently, the sensor can also detect the type of ink (presently dye only)
and the type of special color (if new colors are introduced in the future).
The Ink ID sensor looks for the following marks on the ink cartridge.
Market: No mark, white = Overseas/Global
Ink type No mark, white = dye-based ink
Special color No mark, white = N/A (may be available in future)
Operating Principles
Ink Cartridge
Description of Components
Ink ID Sensor
Ink Low Sensor
Figure 2-13. Ink Cartridge Holder Sensors
Revision B
Ink Cartridge
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