Seiko UC-2200 Service Manual Page 67
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EPSON Stylus PHOTO 2100/2200 Revision B
OPERATING PRINCIPLES Electrical Circuitry Operating Principles 67
2.3.1 Power Supply Circuit Operating Principle
The power supply circuit board of this product is the C387 PSB/PSE. The basic structure of
the circuit uses the RCC switching regulator method and +42VDC and +5DVC are
supplied to the printer mechanism and control boards.
The following indicates the applications of the voltages generated in this power supply
circuit.
Note: +5VDC applies to only the parts and areas in the above table. 3.3V/2.5V drive
components are used as most logic chips (CPU, P-ROM, SDRAM) on the C387MAIN
board. Hence, they do not operate at the +5VDC regulator DC generated by the
C387PSB/PSE. Each 3.3V/2.5V drive chip operates at 3.3V/2.5V reduced by the 3.3V/
2.5V generating regulator on the MAIN board circuit.
The following is the block diagram of the power supply circuit.
Figure 2-18. Power Supply Circuit Block Diagram
Table 2-15. Supplied Power
Voltage Applications
+42 +/- 2VDC
Rated output current: 0.5A
• CR motor
• ASF/Pump motor
• PF motor
• Head drive voltage
+5 +/- 0.25VDC
Rated output current: 0.6A
• Logic sensor circuit
•Panel LED
• Nozzle selection circuit (above Printhead)
• Interface control circuit
• Ink cartridge sensor
• PE sensor
• ASF sensor
• Cutter HP sensors (left, right)
- SERVICE MANUAL 1
- PRECAUTIONS 3
- About This Manual 4
- Revision Status 5
- CONTENTS 6
- Chapter 5 Adjustment 7
- Chapter 6 Maintenance 7
- Chapter 7 APPENDIX 7
- PRODUCTION DESCRIPTION 8
- 1.1 Overview 9
- 1.2 Basic Specifications 10
- 1.2.2 Paper Specification 15
- 1.2.2.3 EPSON Special media 16
- 1.2.3 Printing Area 17
- " Printing area 22
- Specifications 23
- 1.2.5 Release Lever 25
- 1.3 Functions 26
- CODE PAGE SELECTION FUNCTION 28
- EEPROM AND TIMER IC RESET 29
- WASTE INK COUNTER RESET 29
- Firmware version 30
- Code table 30
- CPU mask version 30
- Waste counter 30
- 1.3.13 Error Status 36
- 1.4 Casing Specifications 37
- 1.5 Accessories 37
- OPERATING PRINCIPLES 39
- 2.1 Overview 40
- 2.2 Printer Mechanism 40
- 2.2.1 Carriage Mechanism 41
- 2.2.2 Print Mode 44
- Table 2-4. Dot Sizes 45
- Photo-black + Light-black 45
- Matte-black + Light-black 46
- 2.2.2.3 Head Hot Error 47
- Figure 2-6. DE Mechanism 49
- 2.2.3.5 Roll Paper Feeding 51
- CD-R tray 53
- CD-R home position 53
- (White label position) 53
- PW sensor 53
- Carriage unit 53
- Printhead Driven roller 55
- Star wheel roller 55
- Paper eject support roller 55
- Printhead 56
- Wait time 56
- 2.2.5 Ink System Mechanism 58
- 2.2.5.3 Capping Mechanism 59
- 2.2.6 Ink Sequence 60
- 2.2.7 Paper Cutter Mechanism 63
- 2.2.7.2 Cutter Self-cleaning 64
- 2.2.8 Power-On Sequence 65
- 3.3V Regulator 66
- Power OFF +5VDC +42VDC 66
- Table 2-15. Supplied Power 67
- TROUBLESHOOTING 69
- 3.1 Overview 70
- 3.3 Troubleshooting 78
- Panel board 79
- Panel FFC 79
- Blue line 79
- Fuse (F1) 80
- Connector cable 80
- Label code 81
- Release lever sensor 82
- HP detection position 85
- Carriage unit bottom 85
- PW sensor FFC 86
- Connector 86
- Detection lever 87
- Torsion spring 87
- Sensor base 87
- Spur gear 43 88
- Spur gear 62 88
- CSIC board 91
- Cutter motor 93
- Driver board 93
- Cutter HP sensor (right) 94
- CR motor 96
- Carriage shaft B 96
- PF motor 97
- ASF motor 98
- Left rear side 98
- Extension spring 0.618 98
- DE lock lever 98
- Rear right 99
- CR encoder board 100
- Encoder FFC 100
- CR scale 100
- CR encoder sensor 100
- ASF sensor connector cable 101
- ASF sensor 101
- PF encoder sensor 102
- PF encoder board 102
- Disengaged state 102
- PF scale 102
- Cutter HP sensor (left) 103
- CN10 CN11 103
- Head FFC 103
- Seal rubber 104
- Compression springs 104
- Pump tube 105
- Wiper part 106
- Cleaning lever 106
- CR moving 107
- Star wheel roller unit 108
- Front paper guide 109
- Lower paper guide 110
- Paper eject roller B 110
- Driven roller 110
- PF roller 111
- 3.4 EEPROM Data Analysis 114
- DISASSEMBLY AND ASSEMBLY 115
- 4.1 Overview 116
- 4.1.2 Tools to Be Used 117
- 4.1.3 Screw List 118
- 4.1.4 Pre-Shipment Checks 119
- 4.2 Disassembly 120
- 4.2.1 Removing the Housings 121
- Figure 4-6. Removing the FFC 122
- C A U T I O N 123
- C H E C K 126
- P O I N T 126
- A D J U S T M E N T 130
- R E Q U I R E D 130
- 4.2.4 Removing the ASF Unit 132
- 4.2.7 Removing the Printhead 146
- 4.2.12 Removing the Sensors 161
- 4.2.13 Removing the Motors 168
- ADJUSTMENT 187
- Table 5-7. Adjustment Tools 196
- 5.2 Adjustments 197
- 5.2.2 Head ID Input Function 199
- 5.2.4 PG Adjustment 200
- 5.2.4.1 PG Adjustment Method 201
- The light magenta lines move 204
- ADJUSTMENT Adjustments 205 205
- 5.2.7 PF Adjustment 206
- 5.2.8 PW Sensor Adjustment 207
- 5.2.9 Bi-D Adjustment 208
- 5.2.12 USB ID Input 210
- 5.2.13 IEEE-1394 ID Input 211
- Adjustment) 211
- Printing Function 212
- MAINTENANCE 214
- 6.1 Overview 215
- 6.1.3 Service Maintenance 216
- 6.1.4 Lubrication 217
- MAINTENANCE Overview 218 218
- MAINTENANCE Overview 219 219
- MAINTENANCE Overview 220 220
- Driven Pully 222
- APPENDIX 226
- 7.1 Connector Summary 227
- 7.1.2 EEPROM Address Map 231
- 7.2 Exploded Diagram 236
- APPENDIX Exploded Diagram 237 237
- APPENDIX Exploded Diagram 238 238
- APPENDIX Exploded Diagram 239 239
- APPENDIX Exploded Diagram 240 240
- APPENDIX Exploded Diagram 241 241
- APPENDIX Exploded Diagram 242 242
- APPENDIX Exploded Diagram 243 243
- APPENDIX Exploded Diagram 244 244
- APPENDIX Exploded Diagram 245 245
- APPENDIX Exploded Diagram 246 246
- APPENDIX Exploded Diagram 247 247
- 7.4 Circuit Diagram 253
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