Epson EPL-5500W Figure A-5. PWB-E (220/240 V) Circuit Diagram

+

5

1

2

3

N.

HEATER

360W

L.

1

2

3

N.

HEATER

360W

L.

CN2

INL1 SW1 WH1

WH2

F1

250V

5A

C1

250V

0.33uF

VS1

470V

L1

CM102 L2

CM102

R1

1/4W

470K

R2

1/4W

470K

C2

250V

2200pF

C3

250V

2200pF

C4

250V

0.1uF

RC1

600V, 1.5A RT1

10

C7

400V

82uF

RC51

200V 10A

RC51

200V 10A

+

-

+

1

2

4

3

ZC

VS2

470V

C21

250V

0.1uF

TH1

600V

5A

C22

0.01uF

R21

1/2W

1K

R22

1/2W

33

PI61

6

1

4

2

R69

1W

1.2K

CN1

FUSER LAM

P

+24V

GND(+24V)

+5.1V

GND(+5.1V)

R3

1/2W

470K

R4

1/2W

470K

C9

1KV

100pF

R6

2W

100

Q1

800V

3A

R12

4.7K

1/4W

R5

3W

100K

D1

800

1A

C8

630V

0.01uF

T1

TM199

D2

70V 0.15A

C10

0.033uF

Q2

50V

2A

VR1

200

C11

0.047uF

R7

2W

16

R8

2W

16

R9

2W

16

R10

390

D3

2.0-2.2V

R11

100

D4

70V

0.15A

+

C62

35V

2200uF R63

2W

1.2K

R64

2W

1.2K

SW61

L62

CL086

C64

10V

2200uF +

C65

50V

10uF

R73

WIRE, PES

R66

3W

33

PI51

5

4

1

2

M51

R51

100

R52

1K

C51

4.7uF

R63

1.58K

1%

R54

1.47K

1%

D62

28.2-

29.6V

D61

4.7-

4.9V

D63

70V

0.15A

D64

70V

0.15A

TH61

400V

5A

C61

4.7uF

R62

47

R61

1K

R70

22

1/4W

D65

19.5-20.4V

M61

7

8

4

6

5

C66

0.1uF

R71

100

R72

3.9K

Figure A-5. PWB-E (220/240 V) Circuit Diagram

EPL-5500W Service Manual Appendix

Rev. A A-11

Contents

Main Page NOTICE - i - Copyright 1995 by SEIKO EPSON CORPORATION Nagano, Japan PRECAUTIONS DANGER - ii - WARNING DANGER SAFETY INFORMATION For United States Users; - iii - For Other Countries Users; For Denmark Users; - iv - For Norway Users; Laser Safety Labels For United State For Europe Page PREFACE Page Page Chapter 1 General Description Page Page 1.1 FEATURES Figure 1-1. Exterior View of the EPL-5500W Page 1.2 SPECIFICATIONS 1.2.1 Basic Specifications Table 1-2. Paper Feed Methods Table 1-3. Paper Types Table 1-4. Usability of Special Papers Figure 1-2. Printable Area Printable Area 4.0 mm 4.0 mm 4.0 mm4.0 mm 1.2.2 Electrical Specifications Table 1-5. Electrical Requirements and Ranges 1.2.3 Reliability Specifications 1.2.4 Environmental Conditions for Operation (Including Imaging Cartridge) 1.2.5 Environmental Conditions for Storage and Transportation 1.2.6 Applicable Standards Safety Standards Safety Regulations (Laser Radiation) EMI Others Page 1.3 INTERFACE SPECIFICATIONS 1.3.1 Parallel Interface 1.4 OPERATING INSTRUCTIONS 1.4.1 Control Panel Figure 1-3. Control Panel Indicator Lights 1.4.2 Display of Messages 1.4.2.1 Status Messages Table 1-6. Status Messages 1.4.2.2 Error Messages Table 1-7. Error Messages Table 1-7. Error Messages (Continued) 1.4.3 Printing Resolution Host PC Capability Dependency Table 1-8. Host PC Conditions 1.5 MAIN COMPONENTS Figure 1-4. Main Components 1.5.1 C180 MAIN Board Figure 1-5. C180 MAIN Board Page Page Page Chapter 2 Operating Principles Page 2.1 ENGINE OPERATION Figure 2-1. Main Components 2.1.1 Print Process 2-2 Rev. A Figure 2-2. Print Process Diagram 2.1.1.1 Paper Feeding Figure 2-3. Paper Feeding from the Paper Feed Tray Paper Feeding Tray (Standard Tray) 2.1.1.2 Drum Charge Figure 2-4. Drum Charge 2.1.1.3 Laser Exposure 2.1.1.4 Development Figure 2-5. Laser Exposure Figure 2-6. Development 2.1.1.5 Image Transfer 2-6 Rev. A Lower Fusing Roller Figure 2-7. Image Transfer Thermal Fuse Thermistor Upper Fusing Roller Heater Lamp Paper Figure 2-8. Fusing 2.1.2 Engine Control Rev. A 2-7 Figure 2-9. Engine Controller Connection Diagram 2.1.2.1 Main Motor Functions and Control Figure 2-10. Gear and Roller Positions 2-8 Rev. A M1 Main Motor Board C180 MAIN 2.1.2.3 Fuser Control Figure 2-13. Fuser Control Circuit Figure 2-14. Temperature for Fuser Control Procedure Figure 2-15. Scanner Motor Control Circuit 2.1.2.4 Scanner Motor Control 2.1.2.5 Laser Diode Drive Figure 2-16. Laser Diode Drive Circuit L DATA Figure 2-18. Laser Emission Power Adjustment Timing Forced Laser Diode ON VIDEO Figure 2-19. High-Voltage Supply Block Diagram Figure 2-20 shows theprint process. 2-14 Rev. A Development Figure 2-22 is the end of the print sequence. Figure 2-20. Print Process Figure 2-21. Print Sequence (Start) Figure 2-22. Print Sequence (End) 2.1.2.7 Fan Motor Control Figure 2-23. Power Supply Circuit Block Diagram 2.1.2.8 Power Supply Circuit Function and Safety Protection 2.2 PARALLEL INTERFACE CONTROLLER OPERATION 2.2.1 C180 MAIN Board Operation Figure 2-24. Parallel Interface Controller Section Figure 2-25. C180 MAIN Board Block Diagram Page Chapter 3 Disassembly and Assembly Page 3.1 GENERAL INFORMATION 3.1.1 Precautions for Disassembly/Assembly 3.1.2 Tools Table 3-1. Tools 3.1.3 Small Parts Table 3-2. Abbreviations Used for Screws Table 3-3. Screw Types and Abbreviations 3.1.4 Service Checks after Repair Table 3-4. Checks after Repair 3.2 DISASSEMBLY AND ASSEMBLY 3.2.1 Housing Removal Figure 3-1. Removing the Housing 3.2.1.1 Case Removal Page 3.2.3 Disassembling the Engine 3.2.3.1 Optical Unit Removal Figure 3-4. Removing the Optical Unit Page Page Page Page Page 3.2.3.6 Fusing Unit Removal Figure 3-15. Gear and Spring Position Figure 3-16. Removing the Fusing Guide Plate Page Page 3.2.3.7 Fusing Unit Disassembly Figure 3-21. Removing the Heater Lamp Page Page Page Page Page Page 4.1 ADJUSTMENTS 4.1.1 Print Position Adjustment Figure 4-1. Print Position Adjustment 4.2 mm Leading Edge EPL-5500W Service Manual Adjustments Chapter 5 Troubleshooting List of Tables 5.1 OVERVIEW 5.2 SELF-DIAGNOSTIC FUNCTION AND TOOL Table 5-1. Error Codes 5.3 TROUBLESHOOTING 5.3.1 Troubleshooting of Abnormal Operations Table 5-2. Symptoms and Reference Tables Table 5-3. The Printer Does Not Operate at All Table 5-4. Both LED Lights Do Not Come On Table 5-5. Clear Paper Jam (1) Table 5-6. Clear Paper Jam (2) Table 5-6. Clear Paper Jam (2) (Continued) Table 5-7. Check Toner & Cover Table 5-8. Service Error (1) Table 5-9. Service Error (2) Table 5-10. Service Error (3) Table 5-11. Service Error (4) 5.4.2 Print Quality Anomalies Table 5-12. Print Quality Anomalies Page Table 5-12. Print Quality Anomalies (Continued) Chapter 6 Maintenance Page 6.1 MAINTENANCE 6.1.1 User Maintenance Figure 6-2. Cleaning the Electrode Comb 6.1.1.1 Cleaning Figure 6-1. Position of the Special Tool 6.1.1.2 Replacement of Consumables Maintenance EPL-5500W Service Manual 6.1.2 Service Maintenance 6.1.2.1 Periodic Service Maintenance Table 6-1. Periodic Service Maintenance 6.1.2.2 Cleaning Table 6-2. Cleaning Parts and Procedures Page Appendix A Reference Materials List of Tables A.1 CONNECTOR PIN ASSIGNMENTS Rev. A A-1 Figure A-1. Connector Connections SL2 TH1 Table A-1. Board Connector Summary Main Board (C180 MAIN Board) Power Supply Board (PWB-E Board) High-Voltage Supply Board (PWB-FBoard) A.1.1 Main Board (C180 MAIN Board) Table A-2. CN2 Pin Assignments Table A-3. CN202 Pin Assignments Table A-4. CN203 Pin Assignments Table A-5. CN204 Pin Assignments Table A-6. CN205 Pin Assignments Table A-7. CN206 Pin Assignments Table A-8. CN207 Pin Assignments Table A-9. CN208 Pin Assignments Table A-10. CN209 Pin Assignments Table A-11. CN210 Pin Assignments Table A-12. CN211 Pin Assignments Page Page Page Figure A-3. C180 MAIN Circuit Diagram (2/2) Rev. A A-9 Figure A-4. PWB-E (120 V) Circuit Diagram A-10 Rev. A Figure A-5. PWB-E (220/240 V) Circuit Diagram Rev. A A-11 Page Page EPSON OVERSEAS MARKETING LOCATIONS As of October 1995