Epson EPL-5500W Figure A-3. C180 MAIN Circuit Diagram (2/2)

TODX

VIDEOX

HSYNCX

R212

2.2K

R208

2.2K

1

2

3

4

8

7

6

5

RM201

3.3K

R211

10K

P54/CNTR0

15

P72/SCLK2

9

P53/INT4

16

P71/SOUT2

10

P70/SIN2

11

P00

56

P86/RTP4

66

P56/DA1

13

P57/DA2

12

P60/AN5

3

P81/DA4

71

P76/AN3

5

P04

52

P75/AN2

6

P63/AN9/AMP+

78

P64/AN10/AMP-

77

P37

57

P77/AN4

4

AMPOUT

79

P02

54

XIN

30

XOUT

31

P82/RTP0

70

P83/RTP1

69

P84/RTP2

68

P85/RTP3

67

P01

55

P03

53

P07

49

P22

38

P24

36

P36

58

P40

29

P41

28

P43/INT1

24

P47/SRD71

20

P50/TOUT

19

P51/INT2

18

P52/INT3

17

P62/AN7

1

P87/RTP5

65

P33 61

P30/RTP6 64

P31/RTP7 63

P32 62

P42/INT0 25

P20 40

P21 39

P23 37

P46/SCLK1 21

P45/TXD 22

P44/RXD 23

RESET 27

P15 43

P34 60

P16 42

P14 44

P13 45

P10 48

P11 47

P12 46

P35 59

P25 35

P26 34

P27 33

P80/DA3 72

P73 8

P05 51

P06 50

P55/CNTR1 14

P61/AN6 2

P74 7

P17 41

VCC 73

AMPVCC 80

ADVREF 74

P65/AN11/DAVREF 76

VSS 32

AVSS 75

CNAVSS 26

IC201

M3807X

R207 2.2K

C239

0.01U

+5V 7

SSCAN 1

LDATA 6

LDAPC1 4

LDAPC2 3

LD_CTL 2

GND1 5

CN205

11

12

13

IC202D

74HC02

R206

33

R254

1K

R253

680

C253

4700P

C258

0.1U

8

9

10

IC202C

74HC02

C252

1000P

R296

10K

R291

10K

TP204

TP

VCC 7

C 5

GND 4

OUT

6

NC

1

NC

2

NC

3

NC

8

IC251

M51953AFP

C257

0.1U

C207

10P

EPRDYX

PRRDYX

ETBSYX

SRCLKX

STSX

CMDX

CTBSYX

CPRDYX

RESETX

PRINTX

PS3

1

PS3

3

GND

2

CN208

+24V

5

NC

4

PS1

1

PS1

3

FEED1

6

GND1

2

CN203

C240

0.01U

116

IC203A

ULN2003A

R213 220 1/4W

R214 220 1/4W

R216

47K

R215

47K

C255

0.01U

C256

0.01U

C254

0.01U

400mA

C251

1000P

1

3

2

VR201

10K

R210

3.0K

R209

1.0K

C238

1000P

C237

1000P C236

1000P

C235

1000P

C232

1000P

C231

1000P

C230

1000P

C229

1000P

C259

0.1U

C243

0.1U

PLACE NEAR CN205

PLACE NEAR CN210

NC

1

+24V 2

+5V 4

P_CTL 5

GND2 3

CN210

+5V 2

TH

1

CN202

TP202

TP

+24V 2

FAN 1

CN211

C206

1000P

R227

6.8 1/4W

200mA

R203

3.0K 1.0%

C214

1000P

DT201

FB1L3N

R226

47K

R295

10K

C216

0.01U

1

2

3

4

8

7

6

5

RM202

4.7K

R233 4.7K

R234 4.7K

R236

47K +24V

1

+5V

4

NC

3

PE2

6

PSIZ0

7

PSIZ1

8

PSIZ2

9

FEED2

2

CHECK1

10

CHECK2

11

CHECK3

12

GND1

5

CN209

C241

0.01U

C227

1000P

C226

1000P

C225

1000P

710

IC203G

ULN2003A

215

IC203B

ULN2003A

512

IC203E

ULN2003A

314

IC203C

ULN2003A

C219

1000P

C220

1000P

400mA

C217

1000P

C218

1000P

C205

22P CR201

8MHz

C204

22P

2

3

1

IC202A

74HC02

5

6

4

IC202B

74HC02

R293

10K

IC202-14

4 13

IC203D

ULN2003A

C203

0.1U

TP203

TP

TP201

TP

IC202-7

C201

220U/16V

FUSER 5

+24V 1

GND2 2

+5V 4

GND1 3

CN207

A 1

A 2

B 3

B 4

CN206 1A

R219

1K

R217 56K

C210 820P

C208 820P

R224

2.7 1/4W

R221 1 1/2W 1A

MA

15

MB

1

E

16

C

10

T

2

PH

8

I0 9

I1 7

VMM 3

VMM 14

VCC 6

VCC 11

GND 4

GND 5

GND 12

GND 13

IC204

TEA3718SDP

R292

10K

1A

R238 10K

R237 10K

R204

39K

R205

6.8K

TP205

TP

R290 10K

C215

0.1U

611

IC203F

ULN2003A

D201

1SS226

R223

100K

C213

0.022U

GND

8

NC

9

IC203

2003X

C233

1000P

C224

1000P

C223

1000P

C222

1000P

C221

1000P

C234

1000P

C228

1000P

C242

0.1U

HV_S2

4

+24V

8

HV_C

1

HV_S

3

HV_T

2

HV_B

5

BIAS_M

6

GND2

7

CN204

C202

0.1U

MA

15

MB

1

E

16

C

10

T

2

PH

8

I0 9

I1 7

VMM 3

VMM 14

VCC 6

VCC 11

GND 4

GND 5

GND 12

GND 13

IC205

TEA3718SDP

C212

47U 35V

1A

R220

1K

R218 56K

C211 820P

C209 820P

R225

2.7 1/4W

R222 1 1/2W 1A

Figure A-3. C180 MAIN Circuit Diagram (2/2)

EPL-5500W Service Manual Appendix

Rev. A A-9

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