Motors And Sensors - Epson Stylus Photo PX650 Service Manual

Epson Stylus Photo PX650/TX650/TX659/PX660/PX660 Premium/Artisan 635

2.1.2 Motors and Sensors

Epson Stylus Photo PX650/TX650/TX659/PX660/PX660 Premiun/Artisan 635 are
equipped with the following printhead, motors and sensors.
Table 2-1. Motors and Sensors (Printer Mechanism)
No. Name
1 Printhead F3-MACH Turbo 2 head (6 colors x 90 nozzles)
Type:
Voltage:
2 CR Motor Characteristics:
Drive system:
Type:
Voltage:
3 PF Motor Characteristics:
Drive system:
Function:
4 PE Sensor
Detection method: Transmissive-type photo-interrupter
5 CR Contact Module Ink cartridge detection (CSIC)
Type:
6 CR Encoder
Resolution:
Type:
7 PF Encoder
Resolution:
Function
8 PW Sensor
Detection method: Reflective photosensor
Function:
9 APG Sensor
Detection method: Transmissive-type photo-interrupter
Function:
10 CD-R Guide Sensor
Detection method: Mechanical contact detector
Function:
11 CD-R Tray Sensor
Detection method: Mechanical contact detector
Function:
12 Case Open Sensor
Detection method: Mechanical contact detector
OPERATING PRINCIPLES
Function
DC motor
42V DC ± 5% (voltage applied to the driver)
: 22.7  ± 10%
Armature resistance
Inductance : 17.5 mH ± 25%
PWM constant-current chopping system
DC motor
42V DC ± 5% (voltage applied to the driver)
: 21.2  ± 10%
Armature resistance
Inductance : 17.2 mH (1kHz)
PWM system
Detection of the paper tail end, Paper leading edge
positioning control
Transmissive-type photo-interrupter
180 pulse/inch
Transmissive-type photo-interrupter
180 pulse/inch
• Paper left and right edge
(before and during printing)
• Paper top edge (before printing)
• Paper bottom edge (during printing)
• CD-R top, bottom, right and left edges
(before printing)
APG position detection
CD-R Guide up/down detection
CD-R Tray presence detection
Scanner Unit open/close detection
APG Sensor
PF Encoder
CD-R Tray Sensor
CD-R Guide Sensor
Case Open Sensor
Figure 2-2. Motors and Sensors (Printer Mechanism)
Overview
PF Motor
CR Encoder
PW Sensor
CR Contact Module
PE Sensor
Revision C
CR Motor
36
Confidential