Paper Loading Mechanism; Asf Motor; Cover Tray Detector - Epson Stylus Photo RX700 Service Manual

EPSON Stylus Photo RX700

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

Item
Type 2-phase 48-pole PM type stepping motor
Voltage 42 V (DC voltage) ± 5% (voltage applied to the driver)
Winding resistance 7.0Ω ± 10%(25°C/phase)
Characteristics
Inductance 10.3mH ± 20%(1kHz, 1Vrms, 25°C)
Bipolar driving
Drive system 2-2 phase, 1-2 phase, W1-2 phase, 2W1-2 phase, 4W1-2 phase
constant-current driving
1/126.6 inch (0.201 mm/pulse) (2-2 phase excitation)
Driving resolution
(Resolution on the Rear Paper Feed Roller)

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
Item
Detection method Mechanical contact detector by MIK Electronic: MPU10980MNB0
Drive voltage 3.3 V ± 5%
Electrical
Rated current 0.6 ~ 1 mA
characteristics
Contact resistance 500mΩ
Detected Condition Switch Mode
Cover Tray is closed
Cover Tray is open
Operating Principles
Specifications
Specifications
Cover Tray Signal
Closed L
Open H
Mechanism Operating Principles
Idle Roller Shaft Assy
ASF Pick Up Shaft Assy
Figure 2-19. Components of Paper Loading Mechanism
Revision A
ASF Rear Assy
LD Roller Assy
ASF Motor
30