Motors And Sensors - Epson Stylus PHOTO RX640 Service Manual

EPSON Stylus PHOTO RX640/650

2.1.2 Motors and Sensors

Table 2-3. Motors and Sensors (Printer Mechanism)
Name
Printhead F3-MACH head (6 colors x 90 nozzles)
Type : DC motor
Voltage : 42V DC ± 5% (voltage applied to the driver)
Armature resistance
CR Motor Characteristics
Inductance
Drive system : PWM system, constant-current chopping system
Type : DC motor
Voltage : 42V DC ± 5% (voltage applied to the driver)
Armature resistance
PF Motor Characteristics
Inductance
Drive system : PWM system
Function : Detection of the paper tail end, Paper leading edge positioning
PE detector control
Detection method: Transmissive-type photo-interrupter
Ink Cartridge detector CSIC
Type : Linear encoder
PTS detector (CR)
Resolution : 1440 pulse/inch
Type : Linear encoder
PTS detector (PF)
Resolution : 180 pulses/inch
Function : Paper left and right edge (before and during printing)
Paper top edge (before printing)
PW detector Paper bottom edge (during printing)
CD-R top, bottom, right and left edges (before printing)
Detection method: Reflective photosensor
Function : APG position detection
APG detector
Detection method: Transmissive-type photo-interrupter
Function : CD-R Guide up/down detection
CD-R Guide detector
Detection method: Mechanical contact detector
Function : CD-R Tray presence detection
CD-R Tray detector
Detection method: Mechanical contact detector
Table 2-4. Motors and Sensors (Scanner Unit)
Name
Type : 2-phase-200-pole PM type stepping motor
CR Motor Voltage : 42V DC ± 5%
Drive system : Bipolar constant-current driving
Function : Carriage home position detection
HP detector
Detection method: Transmissive-type photo-interrupter
Operating Principles
Function
: 24.4Ω ± 10%
: 17.5mH ± 25%
: 27.5Ω ± 10%
: 21.45mH (1kHz)
Function
Overview
APG Sensor
PF Motor
PF Encoder
PW Sensor
CD-R Tray Sensor
CD-R Guide Sensor
CSIC
Figure 2-2. Motors and Sensors (Front Side of Mechanism)
HP Sensor
CCD Sensor Board
Figure 2-3. Motors and Sensors (Scanner Unit)
Revision A
CR Encoder
CR Motor
PE Sensor
CR Motor
CCD Unit (CR Unit)
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