Chapter 2 Operating Principles
Rev. A
2-2
Category
Specification
Print Method
Impact dot matrix
Number of pin wires
24-pin (12X2)
Wire diameter
0.20mm
Print head life
200 million strokes/wire
Weight
115
±
12g
Coil direct current resistance
39.3
±
2.7
Ω
(at 25
°
C)
Response Frequency
Normal Mode : 1500Hz
Buzzer
: 1.5KHz
Drive Voltage
42
±
3V
Drive Condition
•
Normal Drive
•
Thick paper (using multipart or thick papers)
•
Buzzer function
Environmental condition
Temperature
: 5
∼
55
°
C
Humidity
: 10
∼
85%
Print drive method
Constant voltage drive method
Table 2-1. Print Head Specification
Summary of Contents for LQ 670 - B/W Dot-matrix Printer
Page 1: ...EPSON IMPACT DOT MATRIX PRINTER EPSON LQ 670 SERVICE MANUAL SEIKO EPSON CORPORATION 4007875 ...
Page 5: ...v REVISION SHEET Revision Issued Data Contents Rev A May 28 1997 First issue ...
Page 114: ...Chapter 6 Maintenance 6 1 Preventive Maintenance 6 1 ...
Page 116: ...LQ 670 Service Manual Rev A 6 2 Figure 6 1 Lubrication Points ...
Page 122: ...LQ 670 Service Manual Rev A A 5 A 2 Circuit Diagram Figure A 2 C214Main Board Circuit Diagram ...
Page 123: ...Appendix Rev A A 6 Heat Sink Q1 D51 Figure A 3 C214PSB Board Circuit Diagram ...
Page 124: ...LQ 670 Service Manual Rev A A 7 Heat Sink Q1 D51 Figure A 4 C214PSE Board Circuit Diagram ...
Page 125: ...Appendix Rev A A 8 A 3 Component Layout Figure A 5 C214 Main Board Component Layout ...
Page 127: ...Appendix Rev A A 10 A 4 Exploded Diagram Figure A 8 Exploded Diagram ...
Page 128: ...LQ 670 Service Manual Rev A A 11 Figure A 9 Exploded Diagram ...
Page 129: ...Appendix Rev A A 12 Figure A 10 Exploded Diagram ...
Page 135: ...EPSON SEIKO EPSON CORPORATION ...