Page 3 - NOTICE; The contents of this manual are subjects to change without notice.; Copyright © 1995 by SEIKO EPSON CORPORATION Nagano, Japan
NOTICE All rights reserved. Reproduction of any part of this manual in any form whatsoever without SEIKOEPSON’s express written permission is forbidden. The contents of this manual are subjects to change without notice. All efforts have been made to ensure the accuracy of the contents of this manual...
Page 4 - PRECAUTIONS; DANGER; WHEN THE; WARNING; IF THE EPSON PRODUCT HAS A
PRECAUTIONS Precautionary notations throughout the text are categorized relative to 1) personal injury and 2) damage toequipment. DANGER Signals a precaution which, if ignored, could result in serious or fatal personal injury. Greatcaution should be exercised in performing procedures preceded by DAN...
Page 5 - SAFETY INFORMATION; For United States Users; Maximum Radiation Power:; For Other Countries Users; W and the wavelength is 790; udsættelse for stråling.
SAFETY INFORMATION This printer is a page printer which operates by means of a laser. There is no possibility of danger from the laser,provided the printer is operated according to the instructions in this manual provided. Since radiation emitted by the laser is completely confined within protective...
Page 6 - For Finland, Sweden Service People; VAROITUS; Dette er en halvleder laser. Maksimal effeckt til laserdiode er 5.0; Laser Safety Labels; For United State
VAROITUS Laitteen käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saattaa altis- taa käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälle lasersäteiylle. VARNING Om apparaten används på annat sätt än i denna bruksanvisning specificerats, kan användaren utsättas för osynlig laser...
Page 8 - PREFACE; Describes the theory of printer operation.; The contents of this manual are subject to change without notice.
PREFACE This manual describes functions, theory of electrical and mechanical operations, maintenance, and repair ofEPL-5500W.The instructions and procedures included herein are intended for the experience repair technician, and attentionshould be given to the precautions on the preceding page. The c...
Page 9 - REVISION SHEET; Revision; st issue
REVISION SHEET Revision Issue Date Revision Page Rev. A November 24, 1995 1st issue - vii -
Page 10 - TABLE OF CONTENTS
TABLE OF CONTENTS CHAPTER 1. GENERAL DESCRIPTION CHAPTER 2. OPERATING PRINCIPLES CHAPTER 3. DISASSEMBLY AND ASSEMBLY CHAPTER 4. ADJUSTMENTS CHAPTER 5. TROUBLESHOOTING CHAPTER 6. MAINTENANCE APPENDIX - viii -
Page 11 - Table of Contents; INTERFACE SPECIFICATIONS; List of Figures
Chapter 1 General Description Table of Contents 1.1 FEATURES 1-1 1.2 SPECIFICATIONS 1-3 1.2.1 Basic Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31.2.2 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
Page 12 - List of Tables
List of Tables Table 1-1. Options for the EPL-5500W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Table 1-2. Paper Feed Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3Table 1-3. Paper Types . . . . . . . . . . . . . . . . . . . . . . . . . ....
Page 14 - General Description
1.1 FEATURES The EPSON EPL-5500W laser printer has a 300/600 dots per inch (dpi) resolution and 6 pages per minute (ppm) printing speed in a dedicated Microsoft ® Windows Printing System. It works under Microsoft Windows 3.1x and Windows 95, achieving very high performance due to the recent adva...
Page 15 - Table 1-1 lists the optional units available for the EPL-5500W.; Description; Developer cartridge
Table 1-1 lists the optional units available for the EPL-5500W. Table 1-1. Options for the EPL-5500W Cat. No. Description Note S050005 Developer cartridge Developer and toner cartridge S051029 Photoconductor unit — General Description EPL-5500W Service Manual 1-2 Rev. A
Page 16 - Paper Supply; width
1.2 SPECIFICATIONS This section provides statistical data for the EPL-5500W. 1.2.1 Basic Specifications Printing method: Laser beam scanning and dry electrophotography Resolution: 600/300 dpi Printing speed: 6 ppm (letter/A4) First printing time (A4/LT): Less than 20 seconds (face-up output) Warm-up...
Page 17 - Manual feed slot; Printable Area
Usability of special papers: See Table 1-4. Table 1-4. Usability of Special Papers Input OHP Envelopes Labels Card Stock Letterhead Standard built-inpaper tray P P P P R Manual feed slot P P P P R R: Reliable feeding and good image quality.P: Possible, but better avoided. N: Not supported. Paper fee...
Page 18 - Table 1-5. Electrical Requirements and Ranges; Environmental Conditions for Storage and Transportation
1.2.2 Electrical Specifications Table 1-5. Electrical Requirements and Ranges Description 100 V Version 200 V Version Rated voltage 100 ∼ 120 VAC 220 ∼ 240 VAC Input voltage range 90 ∼ 132 VAC 198 ∼ 264 VAC Rated frequency range 50 ∼ 60 Hz Input frequency range 47 ∼ 63 Hz Power consumption Less than...
Page 21 - INTERFACE SPECIFICATIONS; The EPL-5500W is equipped with the following external interfaces:
1.3 INTERFACE SPECIFICATIONS The EPL-5500W is equipped with the following external interfaces: ❏ Parallel interface 1.3.1 Parallel Interface The parallel interface has the following two modes: ❏ ECP mode ❏ Microsoft Peppy mode Pin assignments: Fully IEEE-1284 compliant Connector type: P90-25027-1 (A...
Page 22 - OPERATING INSTRUCTIONS; Indicator Lights; GREEN light
1.4 OPERATING INSTRUCTIONS This section describes printer functions, including control panel operation and messages. 1.4.1 Control Panel The printer control panel gives you easy control over most common printer operations. The panel consists ofthe indicator lights described below. Indicator Lights ❏...
Page 23 - This section describes the status messages.; Message
1.4.2 Display of Messages This printer indicates two types of messages with the status message window for the printer driver on the PC. 1.4.2.1 Status Messages This section describes the status messages. Table 1-6. Status Messages Message Status Printer ready Printer is ready. Printing Printer is pr...
Page 24 - Wrong paper loaded; Printing Resolution Host PC Capability Dependency; CPU
Table 1-7. Error Messages (Continued) Message Status Measures Check Toner & Cover Printer is cover open or notoner cartridge is installed. Check the cover and tonercartridge. Wrong paper loaded Paper in the tray to be fed intothe printer is different from thespecified paper size. Check the paper...
Page 30 - ENGINE OPERATION
Chapter 2 Operating Principles Table of Contents 2.1 ENGINE OPERATION 2-1 2.1.1 Print Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2.1.1.1 Paper Feeding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32.1...
Page 32 - Operating Principles
2.1 ENGINE OPERATION This section describes the functions and operating principles of the EPL-5500W engine. Figure 2-1 shows thelocations and names of the main engine components. 1. Fan Motor (M3) 11. Paper Feeding Tray 2. Lower Fusing Roller 12. Paper Lift-up Plate 3. Paper Exit Sensor (PC3) 13. Pa...
Page 34 - Figure 2-3. Paper Feeding from the Paper Feed Tray
2.1.1.1 Paper Feeding Paper can be fed into the printer from the paper feed tray (150 sheets) or from the manual feed slot (1 sheet ata time). Paper fed by the paper take-up roller is transported to the transport roller, pre-image transfer roller,and then exit roller. After this, the paper is fed ou...
Page 38 - Figure 2-9. Engine Controller Connection Diagram
2.1.2 Engine Control This section describes engine control, the power supply board, and the high-voltage supply board. The engine is controlled by the main board (C180 MAIN board). Figure 2-9 shows the engine controller connection diagram. C180 MAIN Board MainMotor(M1) PolygonMotor(M2) FanMotor(M2) ...
Page 40 - M 1 M a i n M o t o r; Take Up Solenoid ON
Figure 2-11 shows the main motor drive circuit. The M1 main motor is a four-phase stepping motor, controlled by the CPU (IC201) on the main board (C180 MAIN). This board has a stepping motor driver ICthat drives the M1 main motor with a constant current. 2.1.2.2 Paper Take-Up Sensor and Paper Exit S...
Page 41 - Figure 2-14. Temperature for Fuser Control Procedure
2.1.2.3 Fuser Control The heater lamp, powered by AC voltage, heats the fuser. When the power supply board receives a FUSERsignal from the main board (C180 MAIN), the power supply board (PWB-E) supplies the AC voltage to theheater lamp. This AC voltage is cut by an interlock switch when the case is ...
Page 42 - Figure 2-15. Scanner Motor Control Circuit
If any of the following conditions are detected, the printer indicates a fuser error: 1. If the thermistor detects the temperature has not risen by 20º C for 50 msec. within 12 to 30 sec.after warm up. (This error applies only when the thermistor detects a temperature of 90º C (194º F)or less.) 2. I...
Page 43 - LDAPC1 is a tuning, and LDAPC2 is a fine tuning signal.; F o r c e d L a s e r D i o d e O N; Figure 2-18. Laser Emission Power Adjustment Timing
2.1.2.5 Laser Diode Drive Figure 2-16 shows the laser diode drive circuit. Laser diode emission is controlled by three signals (LDATA,LDAPC1, and LDAPC2) from the main board (C180 MAIN). The LDATA signal is the laser on/off signal. When it is LOW, the laser emits, and when it is HIGH, thelaser stops...
Page 45 - Figure 2-22 is the end of the print sequence.
Figure 2-20 shows the print process. Figure 2-21 shows the start print sequence. The printer’s engine starts printing when it receives the PRINTsignal from the video controller circuit. Figure 2-22 is the end of the print sequence. Brush Roller Charging Laser Exposure PC Drum Image Transfer Developm...
Page 46 - Figure 2-23. Power Supply Circuit Block Diagram
2.1.2.7 Fan Motor Control The fan motor (M3) rotates at engine initialization, and stops after 2 sec. The fan motor also rotates duringprinting. When printing ends, the fan motor stops after 3 min. If the following condition is detected, the printer indicates a laser error: The voltage equivalent to...
Page 47 - PARALLEL INTERFACE CONTROLLER OPERATION; Engine Controller Section; Figure 2-24. Parallel Interface Controller Section
2.2 PARALLEL INTERFACE CONTROLLER OPERATION The parallel interface controller section converts from a bidirectional parallel interface to a video interface.The parallel interface controller section is in the C180 MAIN board. 2.2.1 C180 MAIN Board Operation Figure 2-25 shows a block diagram of parall...
Page 48 - Table 2-1. Functions of C180 MAIN Board Main Elements; Element; This ASIC contains the following functions:
Table 2-1 lists the functions of the main elements of the video controller section in the C180 MAIN board. Table 2-1. Functions of C180 MAIN Board Main Elements Element Location Function E05B23 ASIC U8 This ASIC contains the following functions: Changing from parallel I/F to video I/F.DRAM managemen...
Page 49 - GENERAL INFORMATION
Chapter 3 Disassembly and Assembly Table of Contents 3.1 GENERAL INFORMATION 3-1 3.1.1 Precautions for Disassembly/Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13.1.2 Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
Page 51 - GENERAL INFORMATION; the printer stops printing.; CAUTION; Do not disassemble the photoconductor unit and toner cartridge.; Name; Disassembly and Assembly
3.1 GENERAL INFORMATION This chapter describes disassembly/assembly procedures to use to replace the main assemblies of theEPL-5500W. 3.1.1 Precautions for Disassembly/Assembly Follow the precautions below when disassembling/assembling the printer. WARNING ❒ Disconnect the power cord before disassem...
Page 54 - DISASSEMBLY AND ASSEMBLY; This section describes how to remove the cases and the rear frame.; ASSEMBLY POINT; Upper unit
3.2 DISASSEMBLY AND ASSEMBLY This section describes and illustrates procedures for removing and disassembling components of theEPL-5500W. Cleaning is described in Chapter 6. The assembly procedures are not described, except forspecial notes where necessary, because assembly can be accomplished by pe...
Page 55 - Figure 3-3. Removing the C180 MAIN Board
3.2.2 Removal of the Controller Section The control section is comprised of the controller board (the C180 MAIN board). 3.2.1.1 Main Board (C180 MAIN Board) Removal 1. Turn the printer so that its right side faces you. 2. Remove the right cover. 3. Remove 2 screws, and then remove the shield case. 4...
Page 56 - Do not touch the optical unit, except during replacement.
3.2.3 Disassembling the Engine This section describes disassembling the engine, including the high-voltage unit (PWB-F) and power supplyboard (PWB-E). 3.2.3.1 Optical Unit Removal CAUTION ❒ Do not touch the optical unit, except during replacement. ❒ Do not open the unit under any conditions. ❒ Do no...
Page 57 - Disconnect the 2 connectors and remove the unit.
3.2.3.2 Image Transfer Unit Removal 1. Open the top cover. 2. Remove harness cover A. (Refer to Section 3.2.3.3.) 3. Remove the 2 screws and holders at both ends of the image transfer unit. 4. Disconnect the 2 connectors and remove the unit. Figure 3-5. Removing the Image Transfer Unit - 1 Figure 3-...
Page 58 - Remove the electrode comb.; Figure 3-7. Moving the Image Transfer Unit
ASSEMBLY POINT After reinstalling the image transfer unit, check that the unit smoothly moves up and down. 5. Remove the electrode comb. ASSEMBLY POINT When reinstalling the electrode comb, be careful of the direction of installation. Install theelectrode comb so that the comb terminal faces the ima...
Page 61 - Disconnect connector CN207 from the C180 MAIN board.
3.2.3.5 Power Supply Unit (PWB-E) Removal 1. Remove the upper unit. (Refer to Section 3.2.3.3.) 2. Remove 6 screws, and remove the PWB-E cover. 3. Disconnect connector CN207 from the C180 MAIN board. 4. Remove 4 screws and 2 screws, and then remove the PWB-E. Figure 3-13. Removing the PWB-E Cover Fi...
Page 62 - Remove the transport gear.; Remove 2 screws, and remove the fusing guide plate.; Figure 3-16. Removing the Fusing Guide Plate
3.2.3.6 Fusing Unit Removal 1. Open the top cover. (Refer to Section 3.2.3.3.) 2. Remove the image transfer unit. (Refer to Section 3.2.3.2.) 3. Remove 1 screw, and remove the drive tension section of the fusing unit. 4. Remove the transport gear. 5. Release the hook for the spring and remove the dr...
Page 63 - Figure 3-18. Removing the Fusing Entrance Guide
7. Remove the harness cover. 8. Remove the fusing entrance guide. Figure 3-17. Removing the Harness Cover Figure 3-18. Removing the Fusing Entrance Guide EPL-5500W Service Manual Disassembly and Assembly Rev. A 3-13
Page 65 - Do not touch the glass surface of the lamp with your bare hands.
3.2.3.7 Fusing Unit Disassembly This section describes how to remove the paper exit sensor, heater lamp, lower fusing roller, and upper fusingroller. Heater Lamp CAUTION Do not touch the glass surface of the lamp with your bare hands. 1. Remove the fusing guide plate. (Refer to Section 3.2.3.8.) 2. ...
Page 66 - When reinstalling the thermistor, wire the harness as shown below.
Thermistor 1. Remove the fusing unit. (Refer to Section 3.2.3.6.) 2. Remove the 1 screw, and remove the thermistor. ASSEMBLY POINT When reinstalling the thermistor, wire the harness as shown below. Figure 3-22. Removing the Thermistor Figure 3-23. Wiring Disassembly and Assembly EPL-5500W Service Ma...
Page 67 - Paper Exit Sensor; Figure 3-24. Removing the Paper Separators
Paper Separator 1. Remove the fusing unit. (Refer to Section 3.2.3.6.) 2. Release the lock of the holder, and remove the 3 paper separators. ASSEMBLY POINT When reinstalling the paper separators, be careful of their positions, because the middle onediffers from the others. Paper Exit Sensor 1. Remov...
Page 68 - Be careful of the direction.; Figure 3-27. Removing the Upper Fusing Roller
Fusing Roller 1. Remove the fusing unit. (Refer to Section 3.2.3.6.) 2. Remove the 2 G-rings from the fusing unit. CAUTION When reinstalling the G-rings: ❒ Be careful of the direction. ❒ Securely position them into the grooves of the fusing roller. 3. Remove the upper fusing roller drive gear. 4. Re...
Page 69 - Figure 3-28. Removing the Lower Fusing Roller
5. Take out the lower fusing roller. Thermal Fuse 1. Remove the fusing unit. (Refer to Section 3.2.3.6.) 2. Remove 2 screws, and remove the thermal fuse. Figure 3-28. Removing the Lower Fusing Roller Figure 3-29. Removing the Thermal Fuse EPL-5500W Service Manual Disassembly and Assembly Rev. A 3-19
Page 72 - Leading Edge; Adjustments
4.1 ADJUSTMENTS This section describes the adjustment procedures for the EPL-5500W. You must perform these adjustmentsafter servicing the printer, especially when any component or part is replaced. 4.1.1 Print Position Adjustment You can adjust the vertical print position on a sheet of paper by turn...
Page 74 - Troubleshooting
5.1 OVERVIEW The EPL-5500W has a sophisticated, built-in, self-diagnostic function that reduces troubleshooting time byidentifying failed parts or components. This self-diagnostic test identifies the troubleshooting problems forpage printers, in which even a trivial failure can result in a serious p...
Page 76 - Troubleshooting of Abnormal Operations; Symptom; The printer does not operate at all.
5.3 TROUBLESHOOTING This section describes troubleshooting abnormal operations and print quality problems. 5.3.1 Troubleshooting of Abnormal Operations This section describes how to detect malfunctions, and determine their cause, and it suggests what actions totake for various types of malfunctions....
Page 77 - Table 5-3. The Printer Does Not Operate at All; Table 5-4. Both LED Lights Do Not Come On; Yes
Table 5-3. The Printer Does Not Operate at All Cause Step Checkpoint Finding Solution Connector CN207 on theC180 MAIN board may bedisconnected. 1 Is connector CN207 on theC180 MAIN boarddisconnected? Yes Connect CN207on the board. The fuse on the PWB-Eboard may be blown. 2 Has the fuse blown on theP...
Page 81 - Low image density
5.4.2 Print Quality Anomalies This section describes how to isolate possible causes of a print quality problem. Table 5-12. Print Quality Anomalies Symptom Possible Cause Part Name Check Item Remedy Low image density Poordevelopment PWB-F board — Replace the PWB-Fboard. Image transferproblem Image t...
Page 86 - Figure 6-1. Position of the Special Tool; Maintenance
6.1 MAINTENANCE The EPL-5500W is a page printer that uses an electrophotographic printing method. Unlike most impact orink-jet printers, the key components in the electrophotographic process are integrated into two expendableunits (the photoconductor unit and toner cartridge). Therefore, periodic re...
Page 88 - Image transfer unit; Table 6-2. Cleaning Parts and Procedures; Parts Name; Wipe the surface with a dry soft cloth.
6.1.2 Service Maintenance This section describes the periodic service maintenance and the cleaning required. 6.1.2.1 Periodic Service Maintenance The following units need service maintenance periodically, because they are subject to functionaldeterioration as the total number of printed pages increa...
Page 90 - A.1 CONNECTOR PIN ASSIGNMENTS
Appendix A Reference Materials Table of Contents A.1 CONNECTOR PIN ASSIGNMENTS A-1 A.1.1 Main Board (C180 MAIN-B Board) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3 A.2 CIRCUIT DIAGRAM A-7 A.3 CIRCUIT BOARD COMPONENT LAYOUT A-12 List of Figures Figure A-1. Connector Connections . . ...
Page 91 - A.1 CONNECTOR PIN ASSIGNMENTS; Appendix
A.1 CONNECTOR PIN ASSIGNMENTS Figure A-1 illustrates the interconnection of the primary components. Table A-1 gives the size and adescription of each connector. 1 2 3 4 M 1 M a i n M o t o r 5 43 2 M 2 Po l y g o n M o t o r 1 23 4 1 C N 1 M C N 2 0 6 ϕ A ϕ A ϕ B ϕ B P O L Y G O N C T L 5 V D CG N D...
Page 102 - A.3 CIRCUIT BOARD COMPONENT LAYOUTS
A.3 CIRCUIT BOARD COMPONENT LAYOUTS Figure A-6. C180 MAIN Component Layout (Side A) Appendix EPL-5500W Service Manual A-12 Rev. A
Page 104 - EPSON OVERSEAS MARKETING LOCATIONS; EPSON DEUTCHLAND GmBH; Germany; EPSON IBERICA; Chatswood 2067 NSW, Australia; EPSON TAIWAN TECHNOLOGY &
EPSON OVERSEAS MARKETING LOCATIONS EPSON AMERICA, INC EPSON DEUTCHLAND GmBH 20770 Madrona Avenue, Zülipicher Straße 6, 40549 Düsseldorf P.O. Box 2842 Germany Torrance, CA 90509-2842 Phone: 0211-56030 Phone: (800) 922-8911 Fax: 0211-504-7787 Fax: (310) 782-5220 EPSON UK LTD. EPSON FRANCE S.A. Campus ...
Page 105 - EPSON; Printed in Japan
