Epson 440 User Manual Page 56
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EPSON Stylus Color 440/640/740 Revision A
Chapter 2 Operating Principles 56
2.2 Electrical Circuit Operating Principles
Stylus Color 440/640/740 contains the following three electric circuit
boards.
Electronic Boards for Stylus Color 440 are;
Main: C206 Main-B, C255 Main Board
Power Supply: C206 PSB,PSE Board
Panel: C206 PNL Board
Electronic Boards for Stylus Color 640 are;
Main: C256 Main, Main Board
Power Supply: C206 PSB,PSE Board
Panel: C206 PNL Board
Electronic Boards for Stylus Color 740 are;
Main: C257 Main, Main Board
Power Supply: C257 PSB,PSE Board
Panel: C209 PNL Board
Refer to Figure 2-15 for the major connection of the 3 boards and their
roles.
Figure 2-15. Electric Circuit of Stylus Color 440, 640, 740
PF MOTOR
(Pump Motor)
CR Motor
C206 PSB/PSE Board
C257 PSB/PSE Board
+5 V DC
AC Input
INK END counter
and P-off time
counter
PE Sensor
BCO/CCO Sensor
ASF Lever
Position Sensor
Print Head
+42 V DC
Head Drive Board
CRHP Sensor
Thermistor
12
6
3
9
1
2
4
57
8
10
11
C206 Main-B
C255 Main
C256 Main
C257 Main
+5 V DC
+42 V DC
C206 PNL
C209 PNL
LED
+5 V DC
- 1
- PRECAUTIONS 3
- REVISION STATUS 5
- Product Description 6
- Operating Principles 6
- Troubleshooting 6
- Disassembly and Assembly 6
- Appendix 7
- PRODUCT DESCRIPTION 8
- 1.1 FEATURES 9
- 1.2 Specifications 11
- 1.2.2 Paper Specification 15
- 1.2.2.4 Index Card 16
- 1.2.3 Printing Area 17
- 1.2.3.1 Adjust Lever Setting 19
- [Black Ink Cartridge] 20
- [Color Ink Cartridge] 21
- 1.2.6 Electric Specification 23
- 1.2.7 Reliability 23
- 1.2.8 Safety Approvals 23
- 1.2.9 Acoustic Noise 24
- 1.2.10 CE Marking 24
- 1.2.11 Input Data Buffer 24
- 1.3 Interface 25
- Table 1-13 29
- 1.4 Control Panel 32
- 1.4.2 Panel Functions 33
- 1.5 Error Status 35
- 1.5.4 No Ink-Cartridge 36
- 1.5.5 Maintenance Request 36
- 1.5.6 Fatal Errors 36
- 1.6 Printer Initialization 37
- 1.7 Initialization Settings 37
- 1.8 Main Components 38
- 1.8.5 Power Supply Board 40
- OPERATING PRINCIPLES 42
- 2.1 Overview 43
- 2.1.1 Printer Mechanism 44
- 2.1.1.1 Printing Mechanism 45
- 2.1.1.2 Printing Process 46
- 2.1.1.3 Carriage Mechanism 47
- Eject Roller 48
- Paper guide(Front) 48
- [Previous] 51
- [Stylus Color 440,640,740] 51
- 2.1.1.5 Ink System 52
- CW Rotation 54
- CCW Rotation 54
- AC Input 56
- TRANS(T1) 57
- C206 PNL 60
- Transceiver 62
- (IC16) 62
- C209 PNL 64
- 2.2.4.4 Timer Circuit 71
- 2.2.4.5 DRAM Control 72
- TROUBLESHOOTING 81
- Stylus Color 640: C256Main 82
- Stylus Color 740: C257Main 82
- Chapter 3 Troubleshooting 83 83
- Chapter 3 Troubleshooting 84 84
- Chapter 3 Troubleshooting 85 85
- 3.2.2 Error is detected 86
- Chapter 3 Troubleshooting 87 87
- Chapter 3 Troubleshooting 89 89
- Chapter 3 Troubleshooting 90 90
- Chapter 3 Troubleshooting 91 91
- The Main 91
- Chapter 3 Troubleshooting 92 92
- Chapter 3 Troubleshooting 93 93
- Chapter 3 Troubleshooting 94 94
- Chapter 3 Troubleshooting 95 95
- Chapter 3 Troubleshooting 96 96
- Chapter 3 Troubleshooting 97 97
- Chapter 3 Troubleshooting 98 98
- DISASSEMBLY AND ASSEMBLY 99
- W ARNING 100
- 4.1.2 Tools 101
- 4.2 Disassembly Procedures 104
- 4.2.1 Removing the Housing 105
- ADJUSTM ENT 106
- REQUIRED 106
- Printhead U nit 110
- Fastener H ead 110
- (N o .4 ) 112
- Absorber Tray Assem bly;A 112
- Pump Assembly 114
- Cap Assembly 114
- Head Cleaner 115
- Order of assembling 115
- PF M otor Assem bly 118
- H P D e te c to r 128
- ADJUSTMENT 129
- 5.1 Overview 130
- Chapter 5 Adjustment 131 131
- 5.2 Adjustment 132
- Chapter 5 Adjustment 133 133
- Chapter 5 Adjustment 134 134
- Maintenance 135
- Adjustment 135
- A4 Check 135
- Pattern 135
- M S-D O S Prom pt-S C 640 136
- Is the m odel nam e correct? 137
- Starting SERVICE PROGRAM 138
- N o te : 139
- Transportation Liquid C harge 140
- H ead cleaning 140
- Chapter 5 Adjustment 141 141
- Maximum is 19,800 points 142
- Esc: Previous 142
- Chapter 5 Adjustment 144 144
- Chapter 5 Adjustment 146 146
- W riting to EEPROM now 147
- Esc: Previous 147
- M S-D O S Prom pt-SC 640 148
- Chapter 5 Adjustment 149 149
- Chapter 5 Adjustment 150 150
- Left Gap 152
- Right Gap 152
- MAINTENANCE 153
- 6.1 Overview 154
- 6.1.3 Lubrication 155
- Chapter 6 Maintenance 156 156
- Chapter 6 Maintenance 157 157
- Chapter 6 Maintenance 158 158
- Chapter 6 Maintenance 159 159
- APPENDIX 160
- A.1 Connector Summary 161
- Chapter 7 Appendix 162 162
- Chapter 7 Appendix 163 163
- Chapter 7 Appendix 164 164
- Chapter 7 Appendix 165 165
- Chapter 7 Appendix 166 166
- Chapter 7 Appendix 167 167
- Chapter 7 Appendix 168 168
- A.2 EEPROM Address Map 169
- Chapter 7 Appendix 170 170
- Chapter 7 Appendix 171 171
- Chapter 7 Appendix 172 172
- Chapter 7 Appendix 173 173
- Chapter 7 Appendix 174 174
- Chapter 7 Appendix 175 175
- Chapter 7 Appendix 176 176
- Chapter 7 Appendix 177 177
- Adjusted at factory 177
- Chapter 7 Appendix 178 178
- Chapter 7 Appendix 179 179
- Chapter 7 Appendix 180 180
- Chapter 7 Appendix 181 181
- Chapter 7 Appendix 182 182
- Chapter 7 Appendix 183 183
- Chapter 7 Appendix 184 184
- Chapter 7 Appendix 185 185
- Chapter 7 Appendix 186 186
- Chapter 7 Appendix 187 187
- A.4 Exploded Diagrams 188
- Chapter 7 Appendix 189 189
- Chapter 7 Appendix 190 190
- Chapter 7 Appendix 191 191
- Chapter 7 Appendix 192 192
- REV.1.0 10002 193
- REV.1.0 10002 194
- Chapter 7 Appendix 195 195
- Chapter 7 Appendix 196 196
- Rev.01 10004 197
- A.5 Part List 198
- Part List 198
- Chapter 7 Appendix 199 199
- A.6 Circuit Diagrams 202
- See the hard copy 203
- Chapter 7 Appendix 208 208
- Chapter 7 Appendix 209 209
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