Epson C82324* Manual de Serviço Página 84
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2.2.1.1 Main Motor Mechanism and Control
The main motor, which is located in the driving unit, transmits drive force to the rollers in the
printer. A main motor malfunction is detected if any of following conditions is detected:
1. The lock signal (CN5-1) goes OFF (LOW), and the OFF status continues for 1 second or
more.
2. The lock signal (CN5-1) does not go OFF (LOW) within 1 second after the main motor
goes ON (CN5-2=Low).
Figure 2-10 shows the main motor (M1) drive circuit.
2.2.1.2 Laser Unit Control
The laser unit, which consists of the laser diode unit and the polygon mirror, exposes the PC drum.
The output level of laser is adjusted prior to the printing, and a laser error occurs if the adjustment
fails.
If any of following conditions in the polygon motor is detected, the polygon motor is regarded as
malfunctioning.
1. The polygon motor lock signal does not go ON within 10 seconds after the polygon
motor goes ON.
2. The polygon motor lock signal goes ON after the polygon motor is energized, but it goes
OFF again and does not come back ON within 1 second or more.
3. The SOS signal is not detected during printing.
MOTOR LOCK
MOTOR ON/OFF
+24V
GND
CN5
1
2
3
4
Main Motor
PWB-A Board
Figure 2-10. Main Motor Drive Circuit
1
7
8
12
PWB-A Board
P/H (Print Head) Unit
PWB-D
Laser Diode Board
Polygon Motor
SSCAN
+5 V
+24 V
POLYGON-LOCK
M 2
CN2
Figure 2-11. Laser Control
EPL-N2000 Service Manual Operating Principles
Rev.A 2-11
- SERVICE MANUAL 1
- Nagano, Japan 2
- PRECAUTIONS 3
- SAFETY INFORMATION 4
- Chapter I, subchapter J 5
- LMERPRODUCTTOIEC825 6
- REVISION SHEET 8
- TABLE OF CONTENTS 9
- Chapter 1 Product Description 10
- List of Figures 11
- List of Tables 12
- 1.1 FEATURES 13
- 1.2 SPECIFICATIONS 16
- Table 1-4. Paper Types 18
- Figure 1-2. Printable Area 19
- Table 1-8. Paper Skew 20
- 1.2.7 Applicable Standards 24
- 1.2.9 Process Specifications 24
- 1.2.12 Fonts Specifications 26
- Table 1-12. Built-in Fonts 27
- In i239X Emulation Mode: 28
- 1.3 INTERFACE SPECIFICATIONS 29
- 1.3.1.3 Network Interface 35
- Protocol 37
- 1.4 OPERATING INSTRUCTIONS 39
- 1.4.2 Panel Settings 41
- Table 1-19. SelecType Options 42
- 1.4.3 Service Mode 48
- 1.4.4 Display of Messages 49
- Table 1-20. Status Messages 49
- Table 1-21. Error Messages 50
- Table 1-22. Warning Messages 58
- Table 1-23. Power On Messages 61
- 1.4.5 Printer Sharing 62
- 1.4.6 Controller RAM Status 63
- Figure 1-8. BiRITech Function 63
- Normal Mode 64
- Toner save mode 64
- Reinforced 64
- Halftone 64
- 1.5 MAIN COMPONENTS 65
- Figure 1-11. C207 MAIN Board 66
- 1-54 Rev. A 66
- 1.5.2 PWB-A Board 67
- 1.5.3 PWB-E Board 67
- Figure 1-12. PWB-A Board 67
- Figure 1-13. PWB-E Board 67
- 1.5.4 PWB-F Board Unit 68
- Figure 1-14. PWB-F Board 68
- 1.5.7 Transfer Unit 69
- Figure 1-17. Transfer Unit 69
- 1.5.9 Fusing Unit 70
- Figure 1-18. Print Head Unit 70
- Figure 1-19. Fusing Unit 70
- 1.5.10 Drive Unit 71
- 1.5.11 Imaging cartridge 71
- Figure 1-20. Drive Unit 71
- Paper takeup roller 72
- Transport roller 72
- Paper size switches 72
- Paper empty sensor 72
- Paper near empty sensor 72
- Table of Contents 73
- 2.1 Engine Operation 74
- 2.1.1 Printing Process 74
- Main Printing Process 74
- Charging Brush 75
- PC Drum Ground 75
- Charge Bias:-1150V (DC) 75
- Figure 2-3. Exposure Process 76
- 2.1.1.3 Developing Process 77
- 2.1.1.4 Transfer Process 78
- Figure 2-5. Transfer Process 78
- Figure 2-6. Fusing Process 79
- 2.1.1.6 Cleaning Process 80
- 2.1.2.1 Fusing Unit 80
- 2.2 Controller Mechanism 83
- Figure 2-11. Laser Control 84
- PWB-A Board 85
- Figure 2-13. Sensor Locations 86
- Rev.A 2-15 88
- 3.1 GENERAL INFORMATION 93
- 3.1.5 Servicing Operations 96
- 3.2 DISASSEMBLY AND ASSEMBLY 98
- Disassembly Note 99
- 3-8 Rev. A 100
- 3.2.2 Fusing Unit Removal 101
- Assembling Note 102
- 3-10 Rev. A 102
- Figure 3-6. Unit Location (1) 103
- 3.2.4.1 Shield Frame Removal 104
- 3-10. Rear Panel Removal 105
- 3.2.5 Rear Panel Removal 105
- Assembly Note 106
- 3.2.8 Printhead Unit Removal 108
- 3.2.8.1 Harness Cover Removal 108
- Connector 109
- Print heat Unit 109
- CCS Screw (3X12) 109
- CB(S-P1) Screw 109
- Paper Empty Sensor Assembly 110
- Rev. A 3-19 111
- Paper Takeup Roller Assembly 112
- CCB Screw (3X8) 113
- Paper Lifting Plate 113
- Assembly Note 115
- 3.2.14 Drive Unit Removal 117
- 3-26 Rev. A 118
- 3.2.15 Heater Lamp Removal 119
- 3.2.15.3 Heater Lamp Removal 120
- Rev. A 3-29 121
- Paper Exit Sensor 122
- Actuator 122
- Lower Fusing Roller 123
- 3.2.19 Thermistor Removal 125
- Thermostat 126
- Front Fusing Cover 126
- CB(S)(P1) Screw (3X6) 126
- Rear Side 126
- Upper Fusing Roller 127
- 3.2.22 Main Motor Removal 128
- Drive Unit (outside) 129
- 3. Remove the solenoid 130
- 3-38 Rev. A 130
- Chapter 4 Adjustment 131
- CHAPTER 5 TROUBLESHOOTING 132
- 5-2 Rev. A 133
- 5.1 OVERVIEW 134
- 5.2 SELF-DIAGNOSTIC FUNCTION 134
- 5.3 TROUBLESHOOTING 136
- CHAPTER 6 MAINTENANCE 146
- 6.1 MAINTENANCE 147
- Appendix 148
- Rev. A A-1 150
- Table A-6 PWB-A CN4 (PWB-E) 154
- Table A-14 PWB-A CN13 156
- A.2 Exploded Diagrams 167
- Figure A-2. Housing 167
- A-18 Rev. A 167
- Figure A-3. Frames 168
- Rev. A A-19 168
- A-20 Rev. A 169
- Rev. A A-21 170
- Figure A-6. Drive Unit 171
- A-22 Rev. A 171
- Fifure A-7. Transfer Unit 172
- Rev. A A-23 172
- Figure A-8. Fusing Unit 173
- A-24 Rev. A 173
- Rev. A A-25 174
- A-26 Rev. A 175
- Rev. A A-27 176
- A-28 Rev. A 177
- Rev. A A-29 178
- A-30 Rev. A 179
- Rev. A A-31 180
- A.4 CIRCUIT DIAGRAMS 181
- EPL-N2000 Service Manual 182
- Rev. A A-34 183
- Rev. A A-35 184
- Rev. A A-36 185
- Rev. A A-37 186
- Figure A-21 186
- C207 MAIN BOARD 186
- (MISC>) 186
- Rev. A A-38 187
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