Epson Stylus Photo RX700 - Paper Loading Mechanism; ASF Motor; Cover Tray Detector

EPSON Stylus Photo RX700 Revision A
Operating Principles Mechanism Operating Principles 30
2.2.6 Paper Loading Mechanism
Stylus Photo RX700 is provided with two-way paper loading system, permitting paper
loading from the front and rear. The paper loading system consists of two paper
loading mechanisms and the ASF Drive Assy.
2.2.6.1 ASF Motor
2.2.6.2 Cover Tray Detector
 Function: Detection of Cover Tray opening/closing
(appropriate one of the following operations is performed)
 Cover Tray is closed: Warning is displayed on the LCD or PC monitor.
 Cover Tray is open: Printing operation is continued.
 Detector specifications
Figure 2-19. Components of Paper Loading Mechanism
Item Specifications
Type 2-phase 48-pole PM type stepping motor
Voltage 42 V (DC voltage) ± 5% (voltage applied to the driver)
Characteristics
Winding resistance 7.0Ω ± 10%(25°C/phase)
Inductance 10.3mH ± 20%(1kHz, 1Vrms, 25°C)
Drive system
Bipolar driving
2-2 phase, 1-2 phase, W1-2 phase, 2W1-2 phase, 4W1-2 phase
constant-current driving
Driving resolution
1/126.6 inch (0.201 mm/pulse) (2-2 phase excitation)
(Resolution on the Rear Paper Feed Roller)
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 Cover Tray Signal
Cover Tray is closed
Closed L
Cover Tray is open
Open H
ASF Pick Up Shaft Assy
Idle Roller Shaft Assy
ASF Motor
ASF Rear Assy
LD Roller Assy