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Epson EPL-5500 Figure A-6. PWB-E (220/ 240 V) Circuit Diagram

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+

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-6. PWB-E (220/ 240 V) Circuit Diagram

EPL-5500 Service Manual Appendix

Rev. A A-15

Contents

Main Page NOTICE - i - General Notice: Copyright 1995 by SEIKO EPS ON CORPORATION Nagano, Japan PRECAUTIONS DANGER - ii - WARNING DANGER SAFETY INFORMATION For United States Users; - iii - For Other Countries Users; For Denmark Users; - iv - For Finland, Sweden Service People For Norway Users; Laser Safety Labels [Label on rear printer case] Page PREFACE REVISION SHEET - vii - Chapter 1 General Description Page Page 1.1 FEATURES Figure 1-1. Exterior View of the EPL-5500 Table 1-1. Options for the EPL-5500 General Description EPL-5500 Service Manual 1.2 SPEC IF ICATIONS 1.2.1 Basic Specifications Table 1-3. Paper Types Table 1-2. Paper Feed Methods Figure 1-2. Printable Area Table 1-4. Usability of S p ecial Papers 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 General Description EPL-5500 Service Manual 1.2.6 Applicable Stan dards Safety Standards Safety Regulations (Laser Radiation) EMI Others 1.2.9 Software Specifications Table 1-6. Differences between EPSON GL/2 and GL/2 in the HP LaserJet 4 Emulation Table 1-7. Built-in Fonts Table 1-7. Built-in Fonts (Continued) 1.3 INTERFACE SPECIFICATIONS 1.3.1 Parallel Interface Figure 1-3. Compatibility Mode Signal Timing Table 1-8. Parallel Interface Pin Assignments 1.3.1.2 Reverse Mode Table 1-9. Parallel Interface Pin Assignment Figure 1-4. Parallel Interface State Switch Diagram Figure 1-4 shows the switch diagram for the parallel interface state . 1-12 Rev. B Figure 1-5. Negotiation Timing Chart Figure 1-6. Timing Chart for Data Transfer Figure 1-7. Termination Timing Chart Figure 1-8. Timing Chart for Interrupts 1.3.2 Serial Interface Table 1-10. Serial Interface Pin Assignments Handshaking Protocol 1.3.3 Optional LocalTalk Interface Table 1-11. LocalTalk Interface Pin Assignments 1.4 OPERATING INSTRUCTIONS 1.4.1 Control Panel Figure 1-9. Control Panel LED (Yellow) LED (Red) Button Functions of Pressing the Button 1.4.2 Printer Settings Fu nctions Table 1-12. Printer Settings Page Table 1-12. Printer Settings (Co ntinued) 1.4.3 Service Mode Table 1-13. Service Mode Select Timing 1.4.3.1 Hexadecimal Dump Mode 1.4.3.2 EEPROM Initialize Mode 1.4.3.3 Factory Reset Mode Table 1-14. Default Settings Codes Page Table 1-14. Default Settings Code (Continued) 1.4.4 Display of Messages 1.4.4.1 Status Messages 1.4.4.2 Error Messages Table 1-15. Error Messages 1.4.4.3 Service Call Error Message 1.4.5 Printer Sharing 1-28 Rev. B Figure 1-11. Auto Sense Mode 1.4.5.1 Port Fixed Mode 1.4.5.2 Auto Sense Mode 1.4.6 Emulation Mode Switch Function 1.4.6.1 Emulation Switch by SPL Figure 1-13. Intelligent Emulation Switch EJL: EPSON Job Language PJL: Printer Job Language R 1 inch (When 600 DPI printing) Figure 1-14. Effect of BiRITech Figure 1-15. RITech Adjustment 1.4.8 Toner Save Mode 1.4.9 Optional Memory Figure 1-16. Toner save Mode Upper Edge Left Edge 1.5 MAIN COMPONENTS Figure 1-17. Comp onent Layout 1.5.1 C169 MAIN-B Board Table 1-16. Differences in Components for the C169 MAIN-B Bo ard Figure 1-18. C169 MAIN-B Board Page Page Page Chapter 2 Operating Principles Page 2.1 ENGINE OPERATION Figure 2-1. Main Components 2.1.1 Print Process Figure 2-2. Print Process Diagram 2.1.1.1 Paper Feeding Figure 2-3. Paper Feeding from the Pa per Feed Tray Paper Feeding Tray (Standard Tray) Second Paper Feed Unit (Optional Lower Cassette) 2.1.1.2 Drum Charge Figure 2-4. Paper Feeding from the Lower Paper Cassette Figure 2-5. Drum Charge Operating Principles EPL-5500 Service Manual 2.1.1.3 Laser Exposure 2.1.1.4 Development Figure 2-6. Laser Exposure Figure 2-7. Development 2.1.1.5 Image Transfer 2-6 Rev. B Lower Fusing Roller Figure 2-8. Image Transfer Thermal Fuse Thermistor Upper Fusing Roller Heater Lamp Paper Figure 2-9. Fusing 2.1.2 Engine Control Rev. B 2-7 Figure 2-10. Engine Controller Connecting Diagram 2.1.2.1 Main Motor Functions and Control 2-8 Rev. B Fig.2-11. Gear and Roller Positions 2.1.2.2 Paper Take-Up Sensor and Paper Exit Sensor Main Mot or M 1 B A A 2 Figure 2-14. Fuser Control Circ uit Figure 2-15. Temperature for Fuser Control Procedure Page Figure 2-16. Scanner Motor Control Circuit 2.1.2.4 Scanner Motor Control 2.1.2.5 Laser Diode Drive Figure 2-17. Laser Diode Drive Circuit L DATA Figure 2-19. Laser Emission Powe r Adjustment Timing Forced Laser Diode ON VIDEO Figure 2-20. High-Voltage Supply Block Diagram Figure 2-21 shows the print process. Rev. B 2-15 Development Figure 2-23 is the end of the print sequence. Figure 2-21. Print Process Figure 2-22. Print Sequence (Start) Figure 2-23. Print Sequence (End ) 2.1.2.7 Fan Motor Control 2.1.2.8 Power Supply Circuit Function and Safety Protection Figure 2-24. Power Supply Circuit Block D iagram 2.2 VIDEO CONTROLLER OPERATION Rev. B 2-17 Figure 2-26. C169 MAIN-B Board Block Diagram 2.2.1 C169 MAIN-B Board Operation C169 MAIN-B Board Video Controller Section Engine Controller Section Table 2-1. Functions of C169 MAIN-B Board Main Elements Figure 2-27. Data Flow Diagram 2.2.1.1 Reset Circuit 2.2.1.2 Bus Control Circuit Figure 2-28. Reset Circuit CPU MB86933H (IC1) Figure 2-29. Bus Control Circuit E05A91 (IC2) 2.2.1.3 Interrupt Contr ol Figure 2-30. DRAM Management 2.2.1.4 DRAM Management E05A91 (IC2) 2.2.1.5 Parallel Interface Circuit E05A93 (IC4) Figure 2-31. Parallel Interface Circuit 2.2.1.6 Video Interface Chapter 3 Disassembly and Assembly Page 3.1 GENERAL INFORMATION 3.1.1 Precautions for Disassembly/Assembly WARNING 3.1.2 Tools Table 3-1. Tools 3.1.3 Small Parts Table 3-2. Screw Types and Abbreviations 3.1.4 Service Checks after Repair Table 3-3. Checks after Repair EPL-5500 Service Manual Disassembly and Assembly 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 Rem oval Figure 3-4. Removing the Optical Unit Page Page Page Page Page 3.2.3.6 Fusing Unit Removal When rehooking the spring, be sure to hook it at the correct position. Figure 3-15. Gear and Spring Position Figure 3-16. Removing the Fusing Guide Plate Page Page Page Page Page Figure 3-26. Removing the G-Rings Figure 3-27. Removing the Upper Fusing Roller Page Page 3.2.3.9 Paper Take-Up Sensor and Paper Take-Up So lenoid Removal ASSEMBLY POINT Screw (#6) Figure 3-33. Removing the Paper Guide ASSY. Ground plate Figure 3-32. Removing the Ground Plate ASSEMBLY POINT Figure 3-34. Removing the Gears Figure 3-35. Removing the Paper Take-Up Roller Page 4.1 ADJUSTMENTS 4.1.1 Print Position Adjustment Figure 4-1. Print Position Adjustment Default Settings EPSON EPL-5500 Status Sheet Leading Edge EPL-5500 Service Manual Adjustments Chapter 5 Troubleshooting 5.1 OVERVIEW 5.2 SELF-DIAGNOSTIC FUNCTION 5.2.1 SOFT ERROR Table 5-1. SOFT ERROR Code List 5.2.2 Service Call Error Table 5-2. Service Call A Error Service call B error Page Table 5-3. Service Call B Error Page 5.3 TROUBLESHOOTING 5.3.1 Troubleshooting of Abnormal Operation Table 5-4. Symptoms and Reference Tables Table 5-5. The Printer Does Not Operate at All Table 5-6. Both LED Lights Do Not Come On Table 5-7. The LED Does Not Come On (1) Page Table 5-8. The LED Does Not Come On (2) Table 5-8. The LED Does Not Come On (2) (Continued) Table 5-9. The LED Does Not Come On (3) Table 5-10. The LED Does Not Come On (4) Table 5-11. Software Errors Table 5-14. The Scanner Motor Error Table 5-12. Fusing Unit Error Table 5-13. The Fan Motor Error Page Table 5-15. Laser Light Error Table 5-16. Communication Err or Table 5-17. EEPROM Write Error Table 5-18. Engine Initialize Error Table 5-19. C1000 or C1001 Error Table 5-21. C1003 Error Table 5-22. C1130 Error Table 5-23. C1170 Error Table 5-24. C1180 Error Table 5-25. C1300 or C1310 Error Table 5-26. C1320 Error Table 5-27. C1990 Error 5.4.2 Print Quality Anomalies Table 5-28. Print Quality Anomalies Page Table 5-28. 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 6.1.2 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 A.1 CONNECTOR PIN ASSIGNMENTS Figure A-1. Connections for the Video Controller M1 Figure A-2. Cable Connections for the Engine Controller A-2 Rev. A TH1 CHECK1 M2 Table A-1. Board Connector Summary Main Board (C169 MAIN-B Board) Power Supply Board (PW B- E Board) High-Voltage Supply Board (PWB-F Board) A.1.1 Main Board (C169 MAI N-B Board) Table A-2. CN2 Pin Assignments Table A-2. CN2 Pin Assignments (Continued) Table A-3. CN4 Pin Assig nm ents Table A-3. CN4 Pin Assignments (Continued) Table A-4. CN5 Pin Assignm ents Table A-4. CN5 Pin Assignments (Continued) Table A-5. CN202 Pin Assignments Table A-6. CN203 Pin Assignments Table A-7. CN204 Pin Ass ignments Table A-8. CN205 Pin Ass ignments Table A-9. CN206 Pin Ass ignments Table A-10. CN207 Pin Assi g nments Table A-11. CN208 Pin Assi g nments Table A-12. CN209 Pin Assi gnments Table A-13. CN210 Pin Assi gnments Table A-14. CN211 Pin Assi gnments A.2 CIRCUIT DIAGRAMS Figure A-3. C169 MAIN- B Ci rcuit Diagram (1/2) Rev. A A-11 Figure A-4. C 169 MAIN-B Circuit Diagram (2/2) Rev. A A-13 Figure A-5. PWB-E (120 V) Circuit Diagram A-14 Rev. A + Figure A-6. PWB-E (220/ 240 V) Circuit Diagram Rev. A A-15 Page Page EPSON OVERSEAS MARKETING LOCATIONS As of October 1995