Appendix B
Troubleshooting
The tables below provide the test points you
use to check the
motors,
printhead,
and drivers for the LQ-570+/107&.
Connector
CN6
CN7
CN6
(Thermistor)
Table
6, 7, 6
3, 4, 5,
12,
16 and 17
1 0. Printhead Test Points
Test Method
(Power off. Set Meter to Ohms)
Place one lead on one of the commons
45.5 ohms
and the other lead on each of the test
3.2 ohms
pins.
(at
F,
C)
Place one lead on one of the commons
and the other lead on each of the test
pins.
Place one lead on each of the thermistor
pins.
Resistance
45.5 ohms
3.2 ohms
(at
F,
C)
ohms (decreases
as temperature
increases)
B-11. Motor Test Points
Test Method
Connector
Commons Test Pins
(Power off. Set Meter to Ohms)
Resistance
CN4
5
3, 4
Place one lead on one of the commons
19 ohms
CR Motor
and the other lead on each of the test
7 ohms
pins.
(at
F,
C)
CN5
6
Place one lead on one of the commons
79 ohms
PF Motor
and the other lead on each of the test
5 ohms
5
3, 4
pins.
(at
F,
C)
Note:
Common pins may be reversed for the PF motor. If you do not obtain a proper reading with one
common, try the other common. (If you leave CN5 connected when you make the check, pins 5 and 6
are tied together.)
B-20
Epson LQ-570+/1
Summary of Contents for LG1-1070
Page 1: ...EPSON TERMINAL PRINTER LG1 570 lo7cJ L 4000566 REV B ...
Page 111: ...REV A Figure 6 2 LQ 570 Lubrication Points 6 3 ...
Page 112: ...REV B 6 4 ...
Page 125: ...REV B C3 11 C9 I 1 Figure A 10 BOARD ASSY POWER SUPPLY C062 PSB BOARD Component Layout A 1 3 ...
Page 127: ...REV B Zluo Zr Vlr alr Figure A 1 2 BOARD ASSY PANEL C062 PNL BOARD Component Layout A 1 5 ...
Page 128: ...Figure A 1 3 LQ 570 Exploded Diagram A 1 6 ...
Page 129: ...REV B A 1 9 ...
Page 133: ... I C 71 I Ila u 4 l t mm 151 m Figure A 1 8 LQ 107O Case Outline Drawing A 23 ...
Page 135: ...EPSON Printed in Japan 91 09 5 G ...
Page 137: ...LQ 570 1070 ActionPrinter 5000 5500 24 PIN DOT MATRIX PRINTERS TM LQ57AP5 ...
Page 138: ...L Q 5 7 0 1 0 7 0 SERVICE MANUAL EPSON Printed on Recycled Paper ...
Page 141: ......
Page 233: ...REV A No Replace printhead and PH cable Yes 5 Perform final t e s t 5 7 ...
Page 249: ...REV A Figure 6 2 LQ 570 Lubrication Points 6 3 ...
Page 250: ...REV B Figure 6 3 LQ 1 070 Lubrication Points 6 4 ...
Page 257: ... 5 3 R L ...
Page 261: ... I L N CNl L I r I 1 TT 1 C062 PSE Board 2002850 ...
Page 262: ...Pb CNl C062 PSE Board 2002850 ...
Page 263: ...CN1 RXSO PIUSE d I CO62 PNL Board 1 Excluding Japan ...
Page 267: ... C O 6 2 P N L QW CM YXT 2 DIP 5 1 s A S S Y 2 0 0 2 8 5 2 0 0 J3 DI I ...
Page 268: ... 2 ...
Page 269: ...REV B Figure A 14 LQ 1070 Exploded Diagram A 17 ...
Page 270: ...REV B x Figure A 15 Model 5E10 Exploded Diagram A 18 ...
Page 271: ...REV B Figure A 16 Model 5E60 Exploded Diagram A 19 ...
Page 274: ...REV A A 5 CASE OUTLINE DRAWING 3 6 8 m m Figure A 17 LQ 570 Case Outline Drawing A 22 ...
Page 275: ...REV B 151 I Figure A 18 LQ 1070 Case Outline Drawing A 23 ...
Page 306: ...Appendix B Figure B 16 Cl07 iMX lN Board Component Layout Epson LQ 570 1 070 B 29 ...