Service manual

EPSON Stylus Photo R260/R265/R270, R360/R380/R390 Revision B
Operating Principles Overview 25
2.1.2 Motors & Sensors
Figure 2-2. Motors & Sensors in the Printer Mechanism
Table 2-3. List of Motors & Sensors
No. Motor/Sensor Name Function
1 Printhead F3-MACH head (6 colors x 90 nozzles)
2 CR motor
Type: DC motor
Drive voltage: 42V DC ± 5% (voltage applied to the driver)
Coil resistance: 22.7
Ω ± 10%
Inductance: 17.5mH ± 25%
Drive method: PWM constant-current chopping
3PF motor
Type: DC motor
Drive voltage: 42V DC
± 5% (voltage applied to the driver)
Coil resistance: 21.2Ω ± 10%
Inductance: 17.2mH (1 kHz)
Drive method: PWM
4 PE sensor
Detecting items: paper end, leading edge of paper
Type: Transmissive photo interrupter
5 Ink cartridge detector CSIC
6 PTS sensor (CR)
Type: Transmissive photo interrupter
Resolution: 180 pulse/inch
7 PTS sensor (PF)
Type: Transmissive photo interrupter
Resolution: 180 pulse/inch
8 PW sensor
Detecting items:
• Left/right edges of paper (before/during printing)
• Top edge of paper (before printing)
• Bottom edge of paper (during printing)
• Left/right/top/bottom of CDR (before printing)
Type: Reflective photo interrupter
9 APG sensor
Detecting items: APG position
Type: Transmissive photo interrupter
10 CDR Guide sensor
Detecting items: Up/Down status of the CDR Guide
Type: Mechanical contact
11 CDR Tray sensor
Detecting items: Presence of CDR tray
Type: Mechanical contact
APG Sensor
CR Motor
PF Motor
PF Encoder Sensor
CDR Guide Sensor
CDR Tray Sensor
CR Encoder Sensor
PE Sensor
PW Sensor
CSIC