Epson C82305/06 (Serial I/F) Especificaciones Pagina 291
- Pagina / 307
- Tabla de contenidos
- SOLUCIÓN DE PROBLEMAS
- MARCADORES
Valorado. / 5. Basado en revisión del cliente
Appendix
i3
Printhead Drive Circuit
Figure B-9 shows the printhead drive circuit block diagram. The print data already
is expanded to create the image data. The CPU splits up this data three times and
transfers this information to the latch circuit within the head gate array
(IC2).
The
CPU samples the voltage
from
the
+35
V line via the ND converter. The CPU
outputs a pulse via P83, the CPU time output port. The length of this pulse
corresponds to the voltage of the +35 V line. This pulse becomes the head drive
signal. In this way, head gate array
(IC21
outputs head drive signals (signals
HDl
to HD24) that relate to voltage level through the width of the pulses. These signals
are output to the head for each of the section of print data that were created by
subdividing the data three
times
before sending.
By sampling the
+35
V line voltage and determining the length of the head drive
signal, it is possible to maintain the energy supplied to the head at a constant level.
If the voltage of the
+35
V line is HIGH, the CPU shortens the output
pulse.
If the
voltage of the
+35
V line is LOW, the CPU lengthens the output pulse.
-
TMP90CO41
E05A86
(IC21)
DO
-D7
/
E05A50(ICll)
P83
-
PP
/PPO
STA475
(W
DO
-D7
HDl -24
PTS
(lob9)
4
Printhead
Figure B-9.
Printhead
Drive Circuit
B-14
Epson LQ-570+/1
070+
- LG1-570/lo7cJ 1
- SEIKO EPSON’s 2
- Copyright 1991 by 2
- 1.2 SPECIFICATIONS 11
- 1.2.2 Firmware Specifications 17
- (* 136-column) 18
- 1.3 INTERFACE OVERVIEW 22
- 1.5 DIP SWITCHES AND 26
- JUMPER SETTING 26
- Printer Initialization 29
- 1.6.9 Tear-off Function 31
- OPERATION PRINCIPLES 37
- Printhead 39
- Mechanism 39
- Figure 2-2. Carriage Movement 40
- Push Tractor Method 42
- MECHANISM 43
- Rear entrance paper insertion 45
- M“?.’?.TRACT”RA’S’” 46
- ● COMBINATION GEAR (3) 48
- Figure 2-18. Data Flow 52
- and Circuits 52
- 2.3.2 Reset Circuit 53
- ‘50~TEMp2 54
- Figure 2-23 56
- MOTOR, PF Drive Circuit 56
- Drive Circuit 57
- Figure 2-24 58
- OF FIGURES 60
- 3.1 OVERVIEW 61
- 1.~lain washer 63
- 3.2.1 Changing the Printhead 65
- Removing the Printer Case 66
- Removing the Circuit Boards 67
- GROUNDING WIRE 68
- (* 136-column only) 68
- ‘“sH’Q~JD,pR,\\ 73
- COMPRESSION SPRING, 1300 76
- SHAFT, RELEASE 76
- ‘.2/!:”::EMBLy(RIGHT) 79
- Box Driver 83
- BUSH, PARALLEL, ADJUST 83
- Adjustment operation 85
- 4.3 CIRCUIT ADJUSTMENT 87
- . No printing at 90
- Check printhead 94
- Terminal Assignment ) 96
- Wire Assignment ) 96
- 5.3 REPAIR OF THE MAIN BOARD 102
- Either ROM or 103
- BOARD ASSY., MAIN (Cont.) 104
- ● Replace the plat 106
- ● Replace the 107
- LIST OF TABLES 108
- CHAPTER 6 108
- MAINTENANCE 108
- LIST OF FIGURES 108
- 6.1 PREVENTIVE MAINTENANCE 109
- 5 Oil pad 110
- APPENDIX 113
- CONNECTOR SUMMARY 115
- I Signal Nama 117
- Head data 11 118
- “’T 120
- Rectifier 121
- ,,~,$ 122
- ,,----1; 124
- 2002850 00 126
- Rafermwxi 130
- Ref. No 131
- A.5 CASE OUTLINE DRAWING 132
- —------l 133
- Printed in Japan 135
- 91 .09-.5-G 135
- Addendum 136
- LQ-570/1070 137
- ActionPrinter 137
- 5000/5500 137
- PRECAUTIONS 140
- REVISION SHEET 143
- TABLE OF CONTENTS 144
- CHAPTER 1 145
- GENERAL DESCRIPTION 145
- 1.1 FEATURES 147
- Table 1-2. Optional Units 148
- (LQ-1070) 148
- 1.2.1 Hardware Specifications 149
- inch when using envelopes 150
- 1.2.2 Firmware 155
- Specifications 155
- LQ, proportional, condensed 158
- 1.3.1 Parallel Interface 160
- 1.4 CONTROL PANEL 162
- 1.5.1 DIP Switch Settings 164
- 1.5.2 Jumper Setting 165
- 1.6 OPERATING INSTRUCTIONS 166
- 1.6.4 Error Conditions 167
- 1.6.5 Buzzer Operation 167
- 1.6.6 Printer Initialization 167
- 1.6.7 Default Values 168
- PAUSE or RUNNING 170
- 1.7 MAIN COMPONENTS 172
- CHAPTER 2 175
- OPERATION PRINCIPLES 175
- 2.1.1 Printhead Mechanism 177
- Carriage 178
- Movement 178
- 2.1.3 Paper Feed Mechanism 179
- 2.2 POWER SUPPLY OPERATION 187
- 2.3 CONTROL CIRCUIT OPERATION 189
- 191
- --------IM 191
- 2.3.3 Sensor Circuits 192
- 2.3.4 MOTOR, CR Drive Circuit 193
- 2.3.6 Printhead Drive Circuit 195
- 2.3.7 EEPROM Control Circuit 196
- CHAPTER 3 197
- DISASSEMBLY AND ASSEMBLY 197
- 3.1.2 Tools 199
- 3.2 DISASSEMBLY AND ASSEMBLY 202
- 3.2.1 Changing the Printhead 203
- ER, CONNECTOR, UPPER 204
- FRAME, MAIN, RIGHT 209
- MOTOR, PF 209
- CABLE, HEAD, FRONT 209
- CABLE, HEAD, REAR 209
- Point to Note for Assembly 214
- ASSY., PE, REAR 215
- Left Frame 216
- PRINTER MECHANISM (Bottom) 218
- CHAPTER 4 219
- ADJUSTMENTS 219
- 4.3.1 Adjustment Process 225
- CHAPTER 5 226
- TROUBLESHOOTING 226
- 5.1 OVERVIEW 227
- A.1 CONNECTOR SUMMARY 253
- C062 MAIN Board 258
- CO62 PSB Board 2002849 260
- C062 PSE Board 2002850 262
- CO62 PNL Board 263
- ASSY.2002849 00 265
- CO62 PNL 267
- ASSY 2002852 00 267
- Figure A-16 271
- Model-5E60 Exploded Diagram 271
- switch 272
- The LQ-570+/1070+ 276
- Appendix B 277
- Epson LQ-570+/1070+ 277
- Appendix B. The LQ-570+/1070+ 278
- Faster Bit Image Print Speeds 279
- Faster Paper Feed Speeds 279
- Additional Scalable Fonts 279
- Character Table Differences 280
- LQ-570 LQ-570/1070+ 281
- Figure B-3. Data Flow 284
- or Circuit 285
- Location 285
- Functions 285
- Also controls various 285
- Reset Circuit 286
- Sensor Circuits 288
- TMP90CO41 291
- E05A50(ICll) 291
- LQ-570/1070 Service 292
- Figum B-11. Main 293
- Boa&Assembly 293
- Special Tool 294
- Removing the C062 PNL Board 295
- Adjustments 296
- Troubleshooting 297
- Error Codes 298
- Indicator 298
- Asdgnments 299
- Reference Materials 300
- Table B-13 301
- Connector Summary 301
- Figure B-16 306
- Board Component Layout 306
- Figure B-l 7 307
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