Motors & Sensors - Epson Stylus Photo R1900 Service Manual

EPSON Stylus Photo R1900/R2880/R2000
2.5 Motors & Sensors
 Motors
Table 2-5. List of Motors
Fig. Name
Type: DC Motor
A PF Motor
Armature resistance: 21.2 ±10%
Type: DC Motor
B APG Motor
Armature resistance: 64.7 ±15%
Type: 4-phase 48-pole PM type stepping motor
C ASF Motor
Winding resistance: 7.0 ±10% (per phase at 25°C)
Type: DC Motor
D CR Motor
Armature resistance: 23.6 ±10%
Type: 4-phase 48-pole PM type stepping motor
E Pump Motor
Winding resistance: 10.3 ±10% (per phase at 25°C)
 Sensors
Table 2-6. List of Sensors
Fig. Name
1 PF Encoder sensor Type: Rotary Encoder
Type: Transmissive photo interrupter
Sensor output:
2 APG Sensor (1)
• High: In the domain of each PG position
• Low: Between PG positions
Type: Transmissive photo interrupter
Sensor output:
3 APG Sensor (2)
• High: In the domain of large PG
• Low: In the domain of small PG
Type: Transmissive photo interrupter
Sensor output:
4 ASF Sensor
• High: Home position
• Low: Other than home position
Type: Transmissive photo interrupter
Sensor output:
5 PE Sensor
• High (2.4V or more): No paper
• Low (0.4V or less): Paper exists
6 CR Encoder sensor Type: Linear Encoder
Type: Reflective photo interrupter
Sensor output:
7 PW Sensor
• High: No paper
• Low: Paper exists
Operating Principles
Specific
Drive voltage: 42VDC±5%
Drive voltage: 42VDC±5%
Drive voltage: 42VDC±5%
Drive voltage: 42VDC±5%
Drive voltage: 42VDC±5%
Specific
Drive voltage: 3.3VDC±5%
Drive voltage: 3.3VDC±5%
±
Drive voltage: 3.3VDC 5%
±
Drive voltage: 3.3VDC 5%
±
Drive voltage: 3.3VDC 5%
±
Drive voltage: 3.3VDC 5%
Drive voltage: 3.3VDC±5%
Motors & Sensors
Table 2-6. List of Sensors
Fig. Name
8 Ink Mark Sensor Type: Diffuse reflective photo interrupter
Type: Mechanical contact
Sensor output:
9 CDR Sensor
• High: CDR Tray Base open
• Low: CDR Tray Base closed
Type: Mechanical contact
Sensor output:
Cover Open
10
Sensor • High: Cover closed
• Low: Cover open
4
B
3
2
A
1
10
Figure 2-4. Motors and Sensors Layout
Revision E
Specific
Drive voltage: 3.3(5)VDC±5%
Drive voltage: 3.3VDC±5%
Drive voltage: 3.3VDC±5%
5
6
C
D
E
7
8
9
32
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