Epson Stylus Photo RX700 - Ink Supply System; I;C Cover Opening;Closing Switch

EPSON Stylus Photo RX700 Revision A
Operating Principles Mechanism Operating Principles 36
2.2.8 Ink Supply System
The printer is of an off carriage type in which the ink cartridges are contained in the
right and left I/C Holder Assy.
By the Pressure Pump Assy, compressed air is sent through the Pressure Sensor Assy
to the Left Ink Duct Assy. From there, the air is supplied into the left ink cartridges
(x3) and through the Right Ink Duct Assy into the ink cartridges (x3) in the Right I/C
Holder.
The sent air presses the ink bag in each ink cartridge. The ink pushed out is supplied
through the Left/Right Ink Duct Assy → Ink Tube Assy → Valve Assy to the
Printhead.
2.2.8.1 I/C Cover Opening/Closing Switch
 Function: Detection of I/C Cover opening/closing
(appropriate one of the following operations is performed)
 I/C Cover is closed: Warning is displayed on the LCD or PC monitor.
 I/C Cover is open: Printing operation is continued.
 Detector specifications
Note : When the I/C Cover Switch has opened (signal has turned H) during printing,
“Cartridge cover open error” is displayed.
Figure 2-27. Ink Path
Item Specifications
Detection method Mechanical contact detector by MIK Electronic: MPU10980MNB0
Electrical
characteristics
Drive voltage 3.3 V ± 5%
Rated current 0.6 ~ 1 mA
Contact resistance 500mΩ
Detected Condition Switch Mode I/C Cover Switch Signal
I/C Cover is closed
Closed L
I/C Cover is open
Open H
Pressure Pump
Ink Cartridge
I/C Holder Assy
Printhead
Valve Assy (including Ink Tube Assy)
Pressure Sensor