Epson DFX 9000
Revision B
Troubleshooting
Troubleshooting
105
3.3.1.3 Printhead coil resistance values
Head coil resistance is 4.1 ~ 4.9 ohm at 20 °C.
Figure 3-2. Printhead coil resistance check point
Table 3-5. Printhead - Contact pin assignment
Contact (lead)
number
Front PCB
side A
Front PCB
side B
Rear PCB
side A
Rear PCB
side B
1
SEN1
---
---
SEN2
2
R-7 pin
L-7 pin
R-7 pin
L-7 pin
3
R-5 pin
l-5 pin
R-5 pin
L-5 pin
4
R-3 pin
L-3 in
R-3 pin
L-3 pin
5
R-1 pin
L-1 pin
R-1 pin
L-1 pin
6
R-9 pin
L-9 pin
R-9 pin
L-9 pin
7
+ 42 V
+ 42 V
+ 42 V
+ 42 V
8
+ 42 V
+ 42 V
+ 42 V
+ 42 V
9
+ 42 V
+ 42 V
+ 42 V
+ 42 V
10
+ 42 V
+ 42 V
+ 42 V
+ 42 V
11
+ 42 V
+ 42 V
+ 42 V
+ 42 V
12
+ 42 V
+ 42 V
+ 42 V
+ 42 V
13
+ 42 V
+ 42 V
+ 42 V
+ 42 V
14
+ 42 V
+ 42 V
+ 42 V
+ 42 V
15
+ 42 V
+ 42 V
+ 42 V
+ 42 V
16
L-2 pin
R-8 pin
L-2 pin
L-8 pin
17
L-4 pin
R-2 pin
L-4 pin
R-2 pin
18
L-6 pin
R-4 pin
L-6 pin
R-4 pin
19
L-8 pin
R-6 pin
L-8 pin
R-6 pin
20
---
SG1
SG2
---
B(F) side
A(R) side
A(F) side
B(R) side
B(F) #20
B(F) #1
A(R) #20
A(R) #1
Summary of Contents for DFX-9000
Page 1: ...EPSONDFX 9000 Serial Impact Dot Matrix Printer SEDM04003 SERVICE MANUAL ...
Page 8: ...C H A P T E R 1 PRODUCT DESCRIPTION ...
Page 61: ...Epson DFX 9000 Revision B Product Description Dimensions and weight 54 ...
Page 62: ...C H A P T E R 2 OPERATING PRINCIPLES ...
Page 99: ...Epson DFX 9000 Revision B Operating Principles Circuit operation 92 ...
Page 100: ...C H A P T E R 3 TROUBLESHOOTING ...
Page 104: ...Epson DFX 9000 Revision B Troubleshooting Overview 97 Mechanism initialization e e e e e ...
Page 107: ...Epson DFX 9000 Revision B Troubleshooting Overview 100 PAPER FEEDING FF APG APPROACH ...
Page 130: ...C H A P T E R 4 DISASSEMBLY AND ASSEMBLY ...
Page 218: ...C H A P T E R 5 ADJUSTMENT ...
Page 263: ...Epson DFX 9000 Revision B Adjustment Additional functions 256 ...
Page 264: ...C H A P T E R 6 MAINTENANCE ...
Page 286: ...C H A P T E R 7 APPENDIX ...
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Page 324: ...EPSON DFX 9000 Revision B Appendix Component Layout 317 7 4 Component Layout ...
Page 333: ...EPSON DFX 9000 Revision B Appendix Parts list 326 ...