Epson EPL-5500W manual

EPSON TERMINAL PRINTER EPL-5500W SERVICE MANUAL EPSON 4005668[...]

- ii -[...]

NOTICE All rights reserved. Reproduction of any part of this manual in any form whatsoever without SEIKO EPSON’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 ac curacy of the contents of this manual. However, should any errors be detected, SEIK[...]

PRECAUTIONS Precautionary notations throughout the text are cate gorized relative to 1) personal injury and 2) dam age to equipment. DANGER Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing proced ures preceded by DANGER Headi ngs. WARNING Signals a precaution w[...]

SAFETY INFORMATION This printer is a page printer which operate s 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 housings, the laser beam cannot escape from the[...]

VAROITUS Laitteen käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saattaa altis- taa käyttäjän turvallisuusluokan 1 ylittävälle näkymä ttömälle lasersäteiylle. VARNING Om apparaten används på annat sätt än i denna bruksanvisning specificerats, kan användaren utsättas för osynlig laserstrålning, som överskrid[...]

[Label inside printer ] The following laser safety label will be attached inside the printer as shown below. For Denmark, Finland, Sweden, and Norway - v -[...]

PREFACE This manual describe s functions, theory of electrica l and mechanical opera tions, maintenance, and repair of EPL-5500W. The instructions and proce dures included herein are intended for the experience repair tec hnician, and attention should be given to the precautions on the preceding page. The chapters are organized as follows: CHAPTER [...]

REVISION SHEET Revision Issue Date Revision Page Rev. A November 24, 1995 1st issue - vii -[...]

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 -[...]

Chapter 1 General Description Table of Contents 1.1 FEATURES 1-1 1.2 SPECIFICATIONS 1-3 1.2.1 Basic Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 1.2.2 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 1.2.3 Reliability Specifications[...]

List of Tables Table 1-1. Options for the EPL-5500W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Table 1-2. Paper Fee d Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Table 1-3. Paper Type s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Table[...]

Rev. A 1-iii[...]

1.1 FEATURES The EPSON  EPL-5500W laser printer has a 300/600 dots per inch (dpi) resolution and 6 page s per minute (ppm) printing speed in a dedicated Microsoft ® Windows  Printing System. It works under Microsoft Windows 3.1x and Wind ows 95, achi eving very high performance due to the recent advanc es in PC technology. The main features [...]

Table 1-1 lists the optional units ava ilable 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[...]

1.2 SPECIFICATIONS This section provides statistical data for the EPL-5500W. 1.2.1 Basic Specifications Printing method: Laser beam scanning and dry electropho tography Resolution: 600/300 dpi Printing speed: 6 ppm (letter/A4) First printing time (A4/LT): Less than 20 seconds (face-up output) Warm-up time: Less than 35 seconds (at rated current and[...]

Usability of special papers: See Tabl e 1-4. Table 1-4. Usability of Special Pape rs Input OHP Envelopes Labels Card Stock Letterhead Standard built-in paper tray PP P P R Manual feed slot P P P P R R: Reliable feeding and good image qual ity. P: Poss ible, but better avoide d. N: Not supported. Paper feed alignment and direction: Center alignment [...]

1.2.2 Electrical Specifications Table 1-5. Electrical Requirements and Rang es 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 500 W Less than 600 W Power consumpt[...]

1.2.6 Applicable Standards Safety Standards 120 VAC model: UL 1950, CSA 22. 2 No. 950 Deviation 3 220/240 VAC model: EN 60950 (IEC950), NEMKO (IEC950), SETI (IEC950), SEMKO (IEC950), DEMKO (IEC950) Safety Regulation s (Laser Radiation) 120 VAC model: FDA (NCDRH) Class 1 220/240 VAC model: VDE 0837 (Laser Class 1) (IEC825), SETI (IEC825), SEMKO (IEC[...]

1.2.9 Software Specifications Built-in modes: Microsoft Windows Printing System PCL4 (software emulation) EPL-5500W Service Manual General Description Rev. A 1-7[...]

1.3 INTERFACE SPECIFICAT IONS The EPL-5500W is equipped with the following external interfaces: ❏ Parallel interface 1.3.1 Parallel Interface The parallel interface has the followi ng two modes: ❏ ECP mode ❏ Microsoft Peppy mode Pin assignments: Fully IEEE-1284 compliant Connector type: P90-25027-1 (Amphenol ) receptacle Applicable plug: 57-3[...]

1.4 OPERATING INSTRUCTIONS This section describes printer functions, including cont rol panel operation and messages. 1.4.1 Control Panel The printer control panel gives you easy control over most common printe r operations. The panel consists of the indicator lights describe d below. Indicator Ligh ts ❏ GREEN light ON: Printer is ready or idle. [...]

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 printing. Manual feed Printer is loading paper from [...]

Table 1-7. Error Messages (Continued) Message Status Measures Check Toner & Cover Printer is cover open or no toner cartridge is installed. Check the cover and toner cartridge. Wrong paper loaded Paper in the tray to be fed into the printer is different from the specified paper size. Check the paper size. Change paper Paper settings are wrong. [...]

1.5 MAIN COMPONENTS To simplify maintenance and repair, the main compon ents of the EPL-5500W have been designed for easy removal and replacement. The main components are: ❏ C180 MAIN Board Main board ❏ PWB-E Board Power supply circuit board ❏ PWB-F Board High-voltage supply circuit board ❏ Optical Unit Printhead unit ❏ Fusing Unit ❏ Ph[...]

1.5.1 C180 MAIN Board The C180 MAIN board contains a parallel interface cont roller and engine controller board. The primary functions of this board are receiving print data from the host and sending the print image to the engine controller via the video interface. ❏ Memory chips 4M-bit DRAM (U4) ❏ Custom ICs ASIC E05B23 (U6) The engine control[...]

1.5.2 PWB-E Board The PWB-E is the power supply board, whic h consists of a switching regulator circuit. It converts the AC line voltage into +24 V and +5 VDC voltages. There are two types of power supply board, the 100/120 V type and 220/240 V type. The difference betwe en the two circuits is only in the input section. Do not touch VR1 on PWB-E bo[...]

1.5.4 Optical Unit The optical unit consists of the laser diode (semi-co nductor laser), the mirror motor (scanner motor) which drives the polygon mirror for laser scanning, and several mirrors and lenses. The laser beam generated by the laser diode is conducted to the OPC drum surface by way of the polygon mirror, as well as several mirrors and le[...]

1.5.6 Photoconductor Unit Core mechanisms of the printing process, such as chargi ng and imaging, are integra ted into this unit. 1.5.7 Developing Cartridge The developing mechanism for the printing process is integrated into this cartridg e. Figure 1-10. Photoconductor Unit Figure 1-11. Developing Unit General Description EPL-5500W Service Manual [...]

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 2.1.1.2 Drum Charge . . . . . . . . . . . . . . . . [...]

List of Tables Table 2-1. Functions of C180 MAIN Board Main Elements . . . . . . . . . . . . . . . 2-18[...]

2.1 ENGINE OPERATION This section describes the functions and operati ng principles of the EPL-5500W engine. Figure 2-1 shows the locations and names of the main engin e components. 1. Fan Motor (M3) 11. Paper Feed ing Tray 2. Lower Fusing Roller 12. Paper Lift-up Plate 3. Paper Exit Sensor (PC3) 13. Paper Take-up Roller 4. Upper Fusing Roller 14. [...]

2.1.1 Print Process This section describes the print process from pape r feeding to paper exit. Figure 2-2 shows a diagram of the print process. Optical Unit Drum Cartridge Toner Cartridge Paper Feeding Tray Fusing Image Transfer Print Exit Drum Charge Toner Hopper Develop- ment Multi Feeding (150 sheets) Manual Feed (1 sheet) Exposure Figure 2-2. [...]

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 at a time). Paper fed by the pape r take-up roller is transported to the transport roller, pre-image transfer roller, and then exit roller. After this, the pape r is fed out onto the print tray. The starting position o[...]

2.1.1.2 Drum Charge The PC drum is charged with static electric ity before laser exposure. The rotat ing charge brush and pre-film are used as the charging method . Less ozone is generated by the corona charge of the rotating charge brush and the pre-film, and the PC drum can be charged with low voltage because the cha rge is directly applied to th[...]

2.1.1.3 Laser Exposure The laser beam, emitted from the optical unit, make s an invisible static image. The SOS (start of scan) sensor, installed on the laser diode cont rol board (PWB-D), unifie s the laser emission timing for each scan line. 2.1.1.4 Development Toner is applied to the invisible static image on the PC drum and a toner image is cre[...]

2.1.1.5 Image Transfer The electrode comb is an image transfer system that transfers the toner image on the PC drum onto the paper. 2.1.1.6 Fusing The toner image transferred onto the pape r is fixed securely using a heat rolle r system as the fusing system. The upper fusing roller, which is heated by the heater lamp, fuses the toner image, which i[...]

2.1.2 Engine Control This section describes engine cont rol, 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 cont roller connection diagram. C180 MAIN Board Main Motor (M1) Polygon Motor (M2) Fan Motor (M2) Exit Sensor (PC3) Paper Take-up Sensor (PC[...]

2.1.2.1 Main Motor Functions and Control The M1 main motor transmits the drive to the printer rollers and the optional second paper feed unit (lower cassette) via ea ch gear, as shown below. Toner Cartridge Sleeve Roller A Paper Exit Roller Upper Fusing Roller Lower Fusing Roller PC Drum Pre-image Transfer Roller Main Motor (M1) Optional Second Pap[...]

Figure 2-11 shows the main motor drive circu it. 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 IC that drives the M1 main motor with a constant current . 2.1.2.2 Paper Take-Up Sensor and Paper Exit Sensor The paper take-up sensor has three functi[...]

2.1.2.3 Fuser Control The heater lamp, powered by AC voltage, heats the fuser. When the power supply board receives a FUSER signal from the main board (C180 MAIN), the power supply board (PWB-E) supplies the AC voltage to the heater lamp. This AC voltage is cut by an interlock switch when the case is open. Thermistor TH1 detects the surface tempera[...]

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 appl ies only when the thermistor dete cts a temperature of 90º C (194º F) or less.) 2. If the thermistor detects that the temperatu[...]

2.1.2.5 Laser Diode Drive Figure 2-16 shows the laser diode drive circuit. Laser diode emission is control led 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, the laser stops emitting. LDATA is the combination of the two[...]

2.1.2.6 Bias Voltages and Laser Drive Timin g Figure 2-19 is a diagram of the drum charge bias voltage, image transfer bias voltage, and the developing bias voltage control circu it. These bias voltages are generated from the +24 VDC from the high-voltage supply board (PWB-F). If the printer detects a case-open condition, the interlock switch is se[...]

Figure 2-20 shows the print process. Figure 2-21 shows the start print sequence. The printer’s engine starts printing when it rece ives the PRINT signal from the video controller circuit. Figure 2-22 is the end of the print sequence. Brush Roller Charging Laser Exposure PC Drum Image Transfer Development Figure 2-20. Print Process [m sec.] Print [...]

2.1.2.7 Fan Motor Control The fan motor (M3) rotat es at engine initialization, and stops after 2 sec. The fan motor also rotates during printing. When printi ng ends, the fan motor stops after 3 min. If the following condition is detected, the printer indicates a laser error: The voltage equivalent to the motor current of the fan motor remains 160[...]

2.2 PARALLEL INTERFACE CONTROLLER OPERATION The parallel interface controller section converts from a bidirection al 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 parallel interface control ler section of the C180 MAI[...]

Table 2-1 lists the functions of the main elements of the video control ler section in the C180 MAIN board. Table 2-1. Functions of C180 MAIN Board Main Elements Element Location Function E05B23 ASIC U8 This ASI C contains the following function s: Changing from parallel I/F to video I/F. DRAM management (refresh control, RAS/CAS control). DRAM U4 [...]

Chapter 3 Disassembly and Assembly Table of Contents 3.1 GENERAL INFORMATION 3-1 3.1.1 Precautions for Disassembly/Assemb ly . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3.1.2 Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3.1.3 Small Parts . . . . . . . . . . . . .[...]

Figure 3-27. Removing the Upper Fusing Roller . . . . . . . . . . . . . . . . . . . . . . . 3-18 Figure 3-28. Removing the Lower Fusing Roller . . . . . . . . . . . . . . . . . . . . . . . 3-19 Figure 3-29. Removing the The rmal Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19 List of Tables Table 3-1. Tools . . . . . . . . . . . .[...]

3.1 GENERAL INFORMATION This chapter describes disassembly/assembly proced ures to use to replace the main assemblies of the EPL-5500W. 3.1.1 Precautions for Disassembly/Assembly Follow the precautions below when disassembling/assembling the printer. ❒ Disconnect the power cord before disassembling/assembling the printer. ❒ Be sure to handle th[...]

3.1.3 Small Parts In the following sections, abbrevi ations are used for small parts, such as screws and washers. Tables 3-2 and 3-3 list these abbrev iations. Table 3-2. Abbreviations Used for Screws Abbreviation Part Name CP Cross-recessed Pan head CC Cross-recessed Cup head CP(O) Cross-recessed Pan head with Outside-toothed lock washer CP(S)(P1)[...]

3.1.4 Service Checks after Repair Check the repaired unit using the following list on completion of servicing. Table 3-4. Checks after Repair Item Location Checkpoint Check Operation Control panel Do all LEDs and buttons function normally? Heater lamp Does the heater lamp turn on normally? Test Page Is the test page printed normally? Data print Doe[...]

3.2 DISASSEMBLY AND ASSEMBLY This section describes and illustrates procedures for removing and disassembling compo nents of the EPL-5500W. Cleaning is described in Chap ter 6. The assembly procedures are not described, exc ept for special notes where nec essary, because assembly can be acc omplished by performing disassembly in reverse. 3.2.1 Hous[...]

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. Disconnect all connectors on the C180 MAIN board[...]

3.2.3 Disassembling the Engine This section describes disassembling the engine, incl uding the high-voltage unit (PWB-F) and power supply board (PWB-E). 3.2.3.1 Optical Unit Removal ❒ Do not touch the optical unit, except during replace ment. ❒ Do not open the unit under any conditions. ❒ Do not remove the circuit board from the optical unit [...]

3.2.3.2 Image Transfer Unit Removal 1. Open the top cover. 2. Remove harne ss 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 3-6. Removing the Image Transfer Unit - 2 EPL-5500[...]

After reinstalling the image transfer unit, check that the unit smoothly moves up and down. 5. Remove the electrode comb. When reinstalling the electrode com b, be careful of the direction of installation. Install the electrode comb so that the comb terminal faces the imag e transfer roller drive gear. Figure 3-7. Moving the Image Transfer Unit Fig[...]

3.2.3.3 Upper Unit Removal 1. Open the uppe r unit. 2. Remove the right cover and left cove r. (Refer to Sect ion 3.2. 1.1.) 3. Disconnect connectors CN202, CN208, and CN211 from the C180 MAIN. 4. Remove harne ss covers A and B, and pull CN1 out from the PWB-E board. 5. Remove the image transfer unit. (Refer to Section 3.2. 3.2. ) 6. Slide and remo[...]

3.2.3.4 High-Voltage Sup ply Board (PWB-F) Removal 1. Open the top cover. 2. Remove 1 screw from the PWB-F cover. 3. Remove the PWB-F cove r. 4. Remove the 4 screws from the PWB-F board. 5. Disconnect 2 connectors. 6. Remove the PWB-F board. Figure 3-11. Removin g the PWB-F Cove r Figure 3-12. Remov ing the PWB-F Disassembly and Assembly EPL-5500W [...]

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 Cove r Figure 3-14. Removin g the PWB-E EPL-5500W Servic[...]

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. (Refe r 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 drive gear section of the fusing unit. When reho[...]

7. Remove the harness cove r. 8. Remove the fusing entrance guide. Figure 3-17. Removin g the Harness Cover Figure 3-18. Removing the Fusing Entrance Guide EPL-5500W Service Manual Disassembly and Assembly Rev. A 3-13[...]

10. Remov e 4 screws, and remo ve the fusing unit. After reinstalling the fusing unit, check the direc tion of the bushings on the paper exit roller and the connection between the roller and the ground plate. Figure 3-19. Removin g the Fusing Unit Figure 3-20. Roller Position Disassembly and Assembly EPL-5500W Service Manual 3-14 Rev. A[...]

3.2.3.7 Fusing Unit Disassembly This section describes how to remove the pape r exit sensor, heater lamp, lower fusing roller, and upper fusing roller. Heater Lamp 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. Pull the heater lamp out of the lamp holder from the f[...]

Thermistor 1. Remove the fusing unit. (Refer to Section 3.2. 3.6.) 2. Remove the 1 screw, and remove the thermistor. 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 Manual 3-16 Rev. A[...]

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 pape r separators. When reinstalling the paper separators, be careful of their positions, because the middle one differs from the others. Paper Exit Sensor 1. Remove the fusing unit. (Refer to Section 3.2. 3.6. ) 2. Remove th[...]

Fusing Roller 1. Remove the fusing unit. (Refer to Section 3.2. 3.6. ) 2. Remove the 2 G-rings from the fusing unit. 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. Remove the upper fusing roller. Figure 3-26. Remov ing[...]

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 therm al fuse. Figure 3-28. Remov ing the Lower Fusing Roller Figure 3-29. Removing the Thermal Fuse EPL-5500W Service Manual Disassembly and Assembly Rev. A 3-19[...]

Chapter 4 Adjustment Table of Contents 4.1 ADJUSTMENT 4-1 4.1.1 Print Position Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 List of Figures Figure 4-1. Print Position Adjustme nt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1[...]

4-ii Rev. A[...]

4.1 ADJUSTMENTS This section describes the adjustment proce dures for the EPL-5500W. You must perform these adjustments after 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 turning the image synchronizing volume control on th[...]

Chapter 5 Troubleshooting Table of Contents 5.1 OVERVIEW 5-1 5.2 SELF-DIAGNOSTIC FUNCTION AND TOOL 5-1 5.3 TROUBLESHOOTING 5-3 5.3.1 Troubleshooting of Abnormal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 5.3.2 Print Quality Anomaly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8 List of T[...]

5.1 OVERVIEW The EPL-5500W has a sophisticated, built-in, self-diagno stic function that reduces troubleshooting time by identifying failed parts or components. This self-diagnostic test identifies the troubleshooting problems for page printers, in which eve n a trivial failure can result in a serious print quality problem. 5.2 SELF-DIAGNOST IC FUN[...]

Table 5-1. Error Codes Error Code Error Condition 0x02 Fan motor error 0x10 Scanner mirror motor error 0x13 Scanner mirror motor and fan motor error 0x20 Laser light error 0x23 Laser light and fan motor error 0x31 Laser light and scanner mirror motor error 0x40 Fusing unit error 0x43 Fusing unit and fan motor error 0x51 Fusing unit and scanner mirr[...]

5.3 TROUBLESHOOTING This section describes troubleshooting abno rmal operations and print quali ty problems. 5.3.1 Troubleshooting of Abnormal Operations This section describes how to detect malfunctions, and determine their cause, and it suggests what actions to take for various types of malfunctions. Eac h paragraph refers you to a detailed troub[...]

Table 5-3. The Printer Does Not Operate at All Cause Step Checkpoint Finding Solution Connector CN207 on the C180 MAIN board may be disconnected. 1 Is connector CN207 on the C180 MAIN board disconnected? Yes Connect CN207 on the board. The fuse on the PWB-E board may be blown. 2 Has the fuse blown on the PWB-E board? Yes Replace the fuse. PWB-E boa[...]

Table 5-6. Clear Paper Jam (2) Cause Step Checkpoint Finding Solution The paper take-up solenoid coils may be open or shorted. 1 Disconnect CN203 on the C180 MAIN board, and check the coil resistance between pins 5 and 6 on the disconnected cable side of the connector using a multimeter. Is the resistance approximately 80 ohms? No Replace the paper[...]

Table 5-6. Clear Paper Jam (2) (Continued) Cause Step Checkpoint Finding Solution Paper take-up sensor flag position may be incorrect. 4 Is the paper take-up sensor flag position incorrect? Yes Reseat the paper take-up sensor flag. Paper take-up roller may be bad. 5— — Replace the paper take-up roller. Table 5-7. Check Toner & Cover Cause S[...]

Table 5-9. Service Error (2) Cause Step Checkpoint Finding Solution Connector CN211 on the C180 MAIN board may be disconnected. 1 Is CN211 on the C180 MAIN board disconnected? Yes Connect it. The fan motor may be bad. 2 — — Replace it. Table 5-10. Service Error (3) Cause Step Checkpoint Finding Solution The optical unit may be bad. 1 — — Re[...]

5.4.2 Print Quality Anomalies This section describes how to isolate possible causes of a print qual ity problem. Table 5-12. Print Qua lity Anomalies Symptom Possible Cause Part Name Check Item Remedy Low image density Poor development PWB-F board — Replace the PWB-F board. Image transfer problem Image transfer unit Check to see if the surface of[...]

Table 5-12. Print Quality Anomalies (Continued) Symptom Possible Cause Part Name Check Item Remedy Blank print Poor development Imaging cartridge Check whether the toner cartridge is installed properly. Reinstall the toner cartridge. PWB-F board — Replace the PWB-F board. Improper charging PWB-F board — Replace the PWB-F board. Poor image trans[...]

Table 5-12. Print Quality Anomalies (Continued) Symptom Possible Cause Part Name Check Item Remedy Toner smudges on the back side of the sheet. Improper charging PWB-F — Replace the PWB-F board. Poor development PWB-F — Replace the PWB-F board. Improper fusing Fusing unit — Replace the fusing unit. Offset print Improper fusing Fusing unit —[...]

Chapter 6 Maintenance Table of Contents 6.1 MAINTENANCE 6-1 6.1.1 User Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 6.1.1.1 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 6.1.1.2 Replace ment of Consumables . . . . . . . . . . . . . . . [...]

6-ii Rev. A[...]

6.1 MAINTENANCE The EPL-5500W is a page printer that uses an electrophotographic printing method. Unlike most impact or ink-jet printers, the key components in the electrophotographic proce ss are integrated into two expendable units (the photoconduct or unit and toner cartridge). Therefore, periodic replac ement of them is essenti al to ensure hig[...]

6.1.1.2 Replacement of Consumab les This printer uses a consumable photoc onductor unit and toner cartridge. The life of photoc onductor unit is 20,000 page s and the toner ca rtridge life is 3,000 pages, when printing on A4- or letter-size pages with a 5% print ratio. If printed images become faint, remove the toner cartrid ge and gently shake it.[...]

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 nee d service maintenance period ically, because they are subject to functional deterioration as the total number of printed page s increases, resulting in bad print quality. Table 6-1[...]

Maintenance EPL-5500W Service Manual 6-4 Rev. A[...]

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

A.1 CONNECTOR PIN ASSIGNMENTS Figure A-1 illustrates the interconnection of the primary components. Table A-1 gives the size and a description of each connector. 1 2 3 4 M1 Mai n Mot or 5 4 3 2 M2 P ol ygon M ot or 1 2 3 4 1 CN1M CN2 06 ϕ A ϕ A ϕ B ϕ B POL YGON CTL 5 VDC GND 24 VDC NC 1 2 M3 Fan Mo tor CN21 1 FA N 24 VDC CN 210 1 2 3 1 2 3 CN3S[...]

Table A-1. Board Connector Summary Connector Description Pins Reference Main Board (C180 MAIN Board) CN1 Video interface (not used) 20 pins — CN2 Centronics parallel interface 36 pins Table A-2 CN202 Connector for thermistor 2 pins Table A-3 CN203 Connector for paper take-up solenoid and paper take-up sensor 6 pins Table A-4 CN204 Connector for h[...]

A.1.1 Main Board (C180 MAIN Boa rd) Table A-2. CN2 Pin Assignments Pin No. Signal Name I/O Description 1 STROBE I STROBE signal 2 DATA1 I Data bit 1 3 DATA 2 I Data bit 2 4 DATA 3 I Data bit 3 5 DATA 4 I Data bit 4 6 DATA 5 I Data bit 5 7 DATA 6 I Data bit 6 8 DATA 7 I Data bit 7 9 DATA 8 I Data bit 8 10 ACKNLG O ACKNLG signal 11 BUSY O BUSY signal[...]

Table A-3. CN202 Pin Assignments Pin No. Signal Name I/O Description 1 +5 — +5 VDC 2 TH I Fuser temperature Table A-4. CN203 Pin Assignments Pin No. Signal Name I/O Description 1 PS1 I Paper take-up sensor 2 GND1 — Ground 3 PS1 I Paper take-up sensor 4 NC — Not connected 5 +24V — + 24 VDC 6 FEED1 O Paper take-up solenoid drive Table A-5. CN[...]

Table A-8. CN207 Pin Assignments Pin No. Signal Name I/O Description 1 +24V — + 24 VDC 2 GND2 — Ground 3 GND1 — Ground 4 +5V — + 5 VDC 5 FUSER O Heater lamp on Table A-9. CN208 Pin Assignments Pin No. Signal Name I/O Description 1 PS3 I Paper exit sensor 2 PS3 I Paper exit sensor 3 GND — Ground Table A-10. CN209 Pin Assignments Pin No. Si[...]

Appendix EPL-5500W Service Manual A-6 Rev. A[...]

A.2 CIRCUIT DIAGRAMS Figure A-2. C180 MAIN Circuit Diagram (1/2) EPL-5500W Service Manual Appendix Rev. A A-7[...]

Appendix EPL-5500W Service Manual A-8 Rev. A[...]

TOD X VI DEOX H SYNC X R212 2.2K R2 08 2. 2K 1 2 3 4 8 7 6 5 RM2 01 3.3K R211 10 K P54/CNTR0 15 P72/ SCLK 2 9 P53/ I N T 4 16 P71/ SOU T2 10 P7 0/SI N2 11 P0 0 56 P8 6/R TP 4 66 P56/ DA1 13 P57/ DA2 12 P6 0/AN 5 3 P8 1/D A4 71 P7 6/AN 3 5 P0 4 52 P75/AN2 6 P63/AN 9/AMP+ 78 P64/AN10/ AM P- 77 P37 57 P7 7/AN 4 4 AMP OU T 79 P0 2 54 XIN 30 XO U T 31 P[...]

L N F1 6. 3A , 1 25V R1 47 0 K C1 0. 2 2 uF 125V NR1 ENC271D-10 Z7D27 1 L1 Z 0 408 , Z 04 6 2 C3 C4 C3 , C 4 2200pF 125V C2 0.1uF 125V BD 1 D 258 A 5 0 D2 S8 60 Th 1 100- g, M1 0 0 10 C , M 10 007 C NT H 9 D 1 0 0 L A C19 0.0 1 u 25 0V R2 4 100 K 0. 5 W D4 EU 2A , A GIC ERA 22-06 R4 22 0K -18 0K 0.2 5 W R5 390K 0.25W Q1 2S K1445 2S K1446 R7 4.7 C5 [...]

+ 5 1 2 3 N. HEA TER 360W L. 1 2 3 N. HEAT E R 36 0W L. CN 2 IN L1 SW1 WH1 WH2 F1 2 50V 5A C1 250V 0. 33uF VS1 47 0V L1 CM10 2 L2 CM10 2 R1 1/ 4W 470K R2 1/ 4W 470K C2 25 0 V 22 00pF C3 25 0V 2200pF C4 250 V 0. 1 uF RC1 600 V , 1. 5 A RT1 10 C7 400V 82uF RC5 1 200 V 10A RC5 1 20 0 V 10A + + - + 1 2 4 3 ZC VS2 470V C21 250V 0. 1uF TH1 60 0 V 5A C2 2[...]

A.3 CIRCUIT BOARD COMPONENT LAYOUTS Figure A-6. C180 MAIN Component La yout (Side A) Appendix EPL-5500W Service Manual A-12 Rev. A[...]

Figure A-7. C180 MAIN Component La yout (Side B) EPL-5500W Service Manual Appendix Rev. A A-13[...]

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