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Epson EPL-5700 Service Manual

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EPSON EPL-5700
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4009173
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Summary of Contents for Epson EPL-5700

  • Page 1 3DJH3ULQWHU EPSON EPL-5700 ® 4009173...
  • Page 2 The contents of this manual are subject to change without notice. All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON would greatly appreciate being informed of them.
  • Page 3 2. MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE EPSON PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE.
  • Page 4 CHAPTER 5. ADJUSTMENTS Provides Epson-approved methods for adjustment. CHAPTER 6. MAINTENANCE Provides preventive maintenance procedures and the lists of Epson-approved lubricants and adhesives required for servicing the product. APPENDIX Provides the following additional information for reference: • Connector pin assignments •...
  • Page 5 REVISION STATUS Rev. Date Page(s) Contents 1998/05/06 First release...

  • Page 6: Table Of Contents

    TABLE OF CONTENTS PRODUCT DESCRIPTION 1.1 FEATURES.................................1-1 1.2 PAPER SPECIFICATION ............................1-6 1.3 PANEL OPERATION ..............................1-8 1.3.1 Power Switch ....................................1-8 1.3.2 Control Panel ....................................1-8 1.3.2.1 Switches ....................................1-8 1.3.2.2 Lights..................................... 1-8 1.3.3 List of Panel Setting ..................................1-9 1.3.4 Special(alternative) Operation ..............................1-13 1.3.4.1 Operation at Power On................................
  • Page 7 OPERATING PRINCIPLES 2.1 OPERATING PRINCIPLES OF MECHANISM......................2-1 2.1.1 Overview......................................2-1 2.1.2 Paper Path ....................................... 2-2 2.1.3 Paper Feed Mechanism.................................. 2-3 2.1.3.1 Paper Feed Operation................................2-3 2.1.3.2 Paper Empty Sensor ................................2-4 2.1.4 Second Paper Feed Unit(Option)..............................2-4 2.1.4.1 Mechanism ....................................2-4 2.1.4.2 Paper Empty Sensor ................................2-5 2.1.4.3 Cassette Type Sensor................................2-5 2.1.5 Laser Exposure....................................2-6 2.1.5.1 Sub Scanning Direction(Vertical scanning direction)........................2-6...
  • Page 8 2.1.9 Fusing Process ....................................2-11 2.1.9.1 Overview ....................................2-11 2.1.9.2 Fusing Temperature Control Circuit ............................2-11 2.1.9.3 Prevention of paper bent from the fusing ..........................2-12 2.1.10 Paper Eject .....................................2-13 2.1.10.1 Face up/Face down disengage mechanism .........................2-13 2.2 ELECTRIC CIRCUIT..............................2-14 2.3 CONTROLLER OPERATING PRINCIPLES .......................2-16 TROUBLESHOOTING 3.1 OVERVIEW...................................3-1 3.2 ELECTRIC CHECK POINT............................3-1...
  • Page 9 3.4 TROUBLESHOOTING..............................3-10 3.4.1 Handling Paper Jam ..................................3-10 3.4.1.1 Paper Jam at power on ................................3-10 3.4.1.2 Paper Jam at Paper Feed and Transporting ..........................3-10 3.4.2 Troubleshooting for Abnormal Operations ...........................3-11 3.4.2.1 Abnormal Laser ..................................3-11 3.4.2.2 Abnormal Polygon Motor................................3-11 3.4.2.3 Abnormal Fusing ..................................3-11 3.4.2.4 Power can not be turned on ..............................3-11 3.4.3 Troubleshooting Print Quality Problems ............................3-12 3.4.4 Horizontal Lines....................................3-14...
  • Page 10 4.2.8 Interlock Switch Removal ................................4-10 4.2.9 Main Control Board Removal................................4-11 4.2.10 Left Cover Removal ..................................4-12 4.2.11 Print Head Unit Removal ................................4-13 4.2.12 Paper Feed Roller Unit Removal ..............................4-14 4.2.13 Paper Feed Solenoid Removal ..............................4-15 4.2.14 Top Cover Removal ..................................4-16 4.2.15 Rear Cover Removal..................................4-17 4.2.16 Fusing Unit Removal ..................................4-18 4.2.17 Disassembling the Fusing Unit ..............................4-19 4.2.17.1 Heater Lamp Removal .................................4-19...
  • Page 11 ADJUSTMENT 5.1 ADJUSTMENT................................5-1 5.1.1 Interlock Switch Position Adjustment..............................5-1 MAINTENANCE 6.1 MINTENANCE ................................6-1 6.1.1 User Maintenance ....................................6-1 6.1.2 Service Maintenance ..................................6-1 APPENDIX 7.1 CONECTOR PIN ASSIGMENTS ..........................7-1 7.2 CIRCUIT BOARD COMPONENT LAYOUT ........................7-6 7.3 EXPLODED DIAGRAM..............................7-7 7.4 CIRCUIT DIAGRAM..............................7-17...
  • Page 13 & + $ 3 7 ( 5 PRODUCT DESCRIPTION...

  • Page 15: Features

    EPL-5700 Chapter1 Product Description 1.1 FEATURES *2:Regarding printing with custom size(non-standard size)paper, the printing speed will become faster EPL-5700 is a small and compact A4 size page printer that semiconductor because cleaning takes place automatically. laser beam scanning is applied for. Following shows features. First print: 19 seconds(A4/LTR), 18.2 seconds(B5) 17.3 seconds(A5), 20.2 seconds(legal)
  • Page 16 EPL-5700 Chapter1 Product Description Table 1-2. Paper Handling (Cont.) PAPER HANDLING Paper supply Capacity Supplied paper Permissible Table 1-1. Paper Handling method size paper thickness Manual Feed slot*4 1 sheet Standard or Normal paper 60 to Paper supply Capacity Supplied paper size Permissible Custom paper 90g/m...
  • Page 17 EPL-5700 Chapter1 Product Description CONTROLLER SPECIFICATION ENVIRONMENTAL CONDITION RISC VR4300 100MHz [Usage conditions including expendable parts] Standard 4MB(EDO type) SIMM option: 1 Temperature: 10 to 35 C 32MB, 16MB, 8MB, 4MB (EDO type, 1 slot) Humidity: 15% to 85% without condensation Maximum 36MB(4MB(standard) + 32MB(expansion Air pressure(altitude): 760hPa or more(2500 meters or less)
  • Page 18 EPL-5700 Chapter1 Product Description ELECTRICAL SPECIFICATION DIMENSIONS Power supply: Dimensions: Main unit 397(W)mm x 463(L)mm x251(H) mm 120 model Weight: Approximately 7.5Kg(not including expendable or 120V +/- 10%, 50-60Hz +/-3Hz optional parts) 200V model 220 to 240V +/- 10%, 50-60Hz +/- 3Hz RELIABILITY AND DURABILITY Electrical characteristic 1) AC line noise:...
  • Page 19 EPL-5700 Chapter1 Product Description [EMC] APPLICABLE CERTIFICATION STANDARDS AND REGULATIONS Table 1-5. EMC The specification of this engine meet the certification standards and Model Name Applicable certification regulations below. There are cases in which the standards and regulations 100V model CNS 13438 that apply differently to products, including the controller, depending on their CISPR22(Taiwan)

  • Page 20: Paper Specification

    EPL-5700 Chapter1 Product Description POWER CONSUMPTION 1.2 PAPER SPECIFICATION Power consumption Useable paper types are mentioned below. 120V model 220-240V model PAPER TYPES Standard Maximum current 5.3A 3.0A Power Maximum(during 580W 580W Normal Paper 60g/m to 90g/ m (16 lbs. to 24 lbs.) consumption warming up) Copy, bond, and recycled paper in general use.
  • Page 21 EPL-5700 Chapter1 Product Description PAPER SIZE CAUTION Special ink-jet paper(surface fine paper, glossy paper, glossy film, etc). Table 1-7.Paper Size and Paper Feeding PAPER CLASSIFICATIONS Paper Paper Size Paper Manual Optional Type Tray Feed Lower Slot Cassette Table 1-6.Paper Classification 210x297 Paper Standard...

  • Page 22: Panel Operation

    EPL-5700 Chapter1 Product Description 1.3.2.1 Switches 1.3 PANEL OPERATION On line switch: Switches the printer between on line and off line status. 1.3.1 Power Switch Form feed switch: When the printer is off line and data remains in the printer’s memory, prints out the data and clears the Power switch is located left rear side of the printer.

  • Page 23: List Of Panel Setting

    EPL-5700 Chapter1 Product Description Memory LED(yellow): Displays a non-flashing light when either a 1.3.3 List of Panel Setting Print Overrun or Mem Overflow error has occurred. Flashes when the resolution is reduced from 600 to 300 dpi, because of lack This printer has no LCD display in the control panel, so it is not possible to of memory size.
  • Page 24 EPL-5700 Chapter1 Product Description Table 1-10. Function Setting for the Control Panel(Cont.) Table 1-11. Function Setting for the Control Panel(Cont.) Menu Item Value Menu Item Value Tray Size MP Tray Size , A5, B5, LT Serial Menu Word Length 8 , 7 Menu HLT, LGL, GLT, GLG, Baud Rate...
  • Page 25 EPL-5700 Chapter1 Product Description Table 1-12. Function Setting for the Control Panel(Cont.) Table 1-13. Function Setting for the Control Panel(Cont.) Menu Item Value Menu Item Value LJ4 Menu Dest Symset 0 277 3199 ESCP2 Menu Font Courier, Prestige, Roman, Sans, serif, Roman T, Orator S, Sans H, GL2 Menu GL-Mode...
  • Page 26 EPL-5700 Chapter1 Product Description Note) Table 1-14. Function Setting for the Control Panel(Cont.) Can only be selected when Parrot-V option. Can only be selected when Type-BI/F option is installed. Menu Item Value Can only be selected when optional lower cassette is installed. FX Menu Auto CR On, Off...

  • Page 27: Special(Alternative) Operation

    EPL-5700 Chapter1 Product Description Indicated only when NLSP EDG OEM Scalable Font ROM for 1.3.4 Special(alternative) Operation Greek* Indicated only when NLSP EDG OEM Scalable Font ROM for Cyrillic* 1.3.4.1 Operation at Power On Indicated only when NLSP EDG OEM Scalable Font ROM for After turning the power on while pressing a particular button, and keep Latin* pressing the switch until the paper feed lamp, toner lamp and memory lamp...

  • Page 28: Up-Dating Rom Program

    EPL-5700 Chapter1 Product Description Initialization of Panel Setting Values CAUTION If you fail to up-date the program ROM correctly, Turn on the power while pressing Continue switch, then the printer Service Req. Error appears and the printer will not resets panel setting values to the original setting which were set at the be able to start.

  • Page 29: Options And Consumable

    Code 500 Sheet Lower Paper Cassette C81287* Face Up Tray C81286* Operational memory module Refer to Reference Guide EPSON Script Level 2 module C83229* Optional Interface Cards; Optional Ethernet Card C82357*/C82362* 32KB Serial Interface Card C82307* 32KB Parallel Interface Card...
  • Page 31 & + $ 3 7 ( 5 OPERATING PRINCIPLES...

  • Page 33: Operating Principles Of Mechanism

    EPL-5700 Chapter2 Operating Principles 2.1 OPERATING PRINCIPLES OF MECHANISM Paper Eject Roller(F/U) Paper Eject Roller(F/D) Back Up Roller 2.1.1 Overview Heat Roller Mechanism part of this printer consists of rollers, gears and main motor, Charging Brush which causes driving power in order to load the paper. Transfer Roller OPC Drum Sleeve Roller...

  • Page 34: Paper Path

    EPL-5700 Chapter2 Operating Principles 2.1.2 Paper Path There are 2 kinds of paper feedings; multi paper feed tray(150 sheets) and manual feed(1 sheet). Optional second paper feed unit(500 sheets) can be Face-down paper eject installed. The paper once loaded is carried to the transfer roller Fusing roller Face-up paper eject Print head...

  • Page 35: Paper Feed Mechanism

    EPL-5700 Chapter2 Operating Principles 3. Separation pad method is used in order to separate each paper and 2.1.3 Paper Feed Mechanism prevents of feeding the second paper together. Paper feed mechanism is shown below. 4. Since there is no paper size sensor mechanism in the multi paper feed tray, the printer detects the length of paper by ON time of paper feed Paper Empty Sensor(SE1) sensor(PS1), and judges the paper size.

  • Page 36: Paper Empty Sensor

    EPL-5700 Chapter2 Operating Principles 2.1.3.2 Paper Empty Sensor 2.1.4 Second Paper Feed Unit(Option) Paper empty sensor(PE1) is mounted at the upper parts of the multi paper 2.1.4.1 Mechanism feed tray and detects if there is any paper in the tray or not. If there is a paper in the tray, actuator stands up and the sensor goes to Since second paper feed unit does not have driven motor, the motive power OFF condition.

  • Page 37: Paper Empty Sensor

    EPL-5700 Chapter2 Operating Principles 2.1.4.2 Paper Empty Sensor 2.1.4.3 Cassette Type Sensor Cassette type sensor switch with sector-shaped lever is mounted on the On the relay board, the paper empty sensor is mounted and detects if there second paper feed unit. When the cassette for each paper size is inserted, is any paper in the paper feed cassette.

  • Page 38: Laser Exposure

    EPL-5700 Chapter2 Operating Principles 2.1.5.1 Sub Scanning Direction(Vertical scanning direction) 2.1.5 Laser Exposure 1. After the printer receives printing signal, the polygon motor(M2) and main An electrostatic latent image is created on the OPC drum by the laser beam motor(M1) rotate, and paper feeding starts. emitted from the print head.

  • Page 39: Main Scanning Direction(Horizontal Scanning Direction)

    EPL-5700 Chapter2 Operating Principles 2.1.5.2 Main Scanning Direction(Horizontal scanning direction) 2.1.6 Charging Process 2.1.6.1 Overview (Refer to Figure2-9 on the next page) In order to make the timing of laser emission, which is emitted every one line is scanned, SOS sensor is mounted on the laser diode control board. It is charged by giving static electricity to OPC drum(Organic Photoconductor) before laser exposure.

  • Page 40: Cleaning Opc Drum

    EPL-5700 Chapter2 Operating Principles 15msec 10msec 2.1.6.2 Cleaning OPC drum -1286V Drum Cartridge Toner which is not transferred to the paper because of paper jam or paper -336V size error needs to be cleaned since it remains on the OPC drum and makes its surface dirty.

  • Page 41: Developing

    EPL-5700 Chapter2 Operating Principles 2.1.7.2 Function of each parts in the development part 2.1.7 Developing Table below shows each parts with its function. 2.1.7.1 Overview Toner image is created by giving toner to the electrostatic image on the Table 2-1. Parts of Developing Mechanism OPC drum.

  • Page 42: Transfer Process

    EPL-5700 Chapter2 Operating Principles OPC drum 2.1.8 Transfer Process 2.1.8.1 Overview Paper This process is to transfer the toner image, which is created on the developing process, to the OPC drum. Transfer roller is charged with transfer bias(+3KV). Transfer method is not the corona transfer but roller transfer method by the transfer roller.

  • Page 43: Fusing Process

    EPL-5700 Chapter2 Operating Principles 2.1.9.2 Fusing Temperature Control Circuit 2.1.9 Fusing Process The thermister (TH1) detects the surface temperature of the fusing heat 2.1.9.1 Overview roller, and input analog voltage into IC201-78. According to the detected In this process, toner which is transferred to the paper in the transfer temperature, the heater lamp (H1) is turned On or Off by the heater lamp process is fused to the paper.

  • Page 44: Prevention Of Paper Bent From The Fusing

    EPL-5700 Chapter2 Operating Principles Temperature detected by thermister Table 2-3. Heat Roller Temperature Control Warm-up Temperature control before Temperature right after the During printing it is interrupted. temperature control started. Less than More than More than 50 C. 50 C less 100 C.

  • Page 45: Paper Eject

    EPL-5700 Chapter2 Operating Principles Face-down eject 2.1.10 Paper Eject Paper is ejected to the face down tray located upper side of the printer. 2.1.10.1 Face up/Face down disengage mechanism Face-up eject The paper which passed the fusing is ejected either face-up or face-down by Paper is ejected to the optional face-up tray.

  • Page 46: Electric Circuit

    EPL-5700 Chapter2 Operating Principles Table 2-5. Function of Each Electric Parts 2.2 ELECTRIC CIRCUIT Name Function Electric circuit of this printer consists of main control circuit, power supply Heater lamp Heats up the heat roller. unit, high voltage board, laser diode control board(in the print head unit). High voltage board Provides following voltages to each Following shows location of electric circuit, sensors and motors.
  • Page 47 EPL-5700 Chapter2 Operating Principles Following shows position of electric parts functions of the optional second Table 2-6. Function of Each Electric Parts(Cont.) paper feed unit. Name Function Cassette Type Sensor Relay Board Inter lock switch Detects open/close condition of the upper Switch (S2) cover and blocks output power except DC5V,...

  • Page 48: Controller Operating Principles

    EPL-5700 Chapter2 Operating Principles 2.3 CONTROLLER OPERATING PRINCIPLES Main Controller Part C234 Main-B board, the controller of this printer consists of main controller part and engine controller part. The main controller part processes printing uPD30200GD order from the host computer and generates video signal. The engine controller part drives the engine according to the video signal from the main controller and performs printing.
  • Page 49 EPL-5700 Chapter2 Operating Principles Main composition elements and functions of C234 Main-B board are following. Table 2-9. Main elements of main controller in C234 Main-B board Name Location Function Table 2-8. Main elements of main controller in C234 Main-B board IC201 Engine control Name...

  • Page 51: Troubleshooting

    & + $ 3 7 ( 5 TROUBLESHOOTING...

  • Page 53: Overview

    EPL-5700 Chapter3 Troubleshooting 3.2.2 Coil Resistance of Main Motor 3.1 OVERVIEW Like other page printers, there are many error modes in this printer, making By measuring the coil resistance of the main motor, the motor can be identification of failed parts or component more difficult. In order to solve this checked if it is working all right or not.

  • Page 54: Checking Sensors

    EPL-5700 Chapter3 Troubleshooting 3.2.3 Checking Sensors Table below shows the easy way to check the various sensors in this printer. Table 3-3. Sensor Check List Sensor Measuring Signal Level Sensor Name Terminals Condition Paper Empty Connector High Paper in Sensor CN212/Pin1 and Pin2 Paper out...

  • Page 55: Printer Condition

    EPL-5700 Chapter3 Troubleshooting Table 3-5. Printer Message List (Cont.) 3.3 PRINTER CONDITION Condition Indication Status Toner out Toner and Continue lights Error 3.3.1 Indication This printer always monitors its condition and indicate it on the control panel Memory Overflow Memory light On. Continue Error by necessity.

  • Page 56: Error" Conditions

    EPL-5700 Chapter3 Troubleshooting Paper Set 3.3.1.2 “Error” Conditions This error appears if “Size Ignore” is off in the printer driver and the paper loaded in the tray does not match the required paper size. Here explains error condition and procedure to recover from it. Replace the paper with the correct size of paper and press Continue switch on the control panel, or turn on “Size Ignore”...

  • Page 57: Service Req. Error

    EPL-5700 Chapter3 Troubleshooting Memory Overflow If “Auto Cont” on the panel setting is set on(refer to page1-10), this The printer has insufficient memory available for the current task. error is canceled automatically after a while. After the error is If “Auto Cont” on the panel setting is set off(refer to page1-10), Press canceled, if there is memory capacity, the printer tries to print that the Continue switch on the control panel.
  • Page 58 EPL-5700 Chapter3 Troubleshooting Toner Low 3.3.1.3 “Warning” Conditions The printer is almost out of toner or the toner left level reaches “0”, and Here explains warning conditions and how to cancel it. Even if warning printing will be stopped. This error is canceled by pressing Continue switch. conditions occur, they do not effect on the printer’s operation.
  • Page 59 EPL-5700 Chapter3 Troubleshooting Table 3-9. Service Req. Error List(cont.) 3.3.1.4 Service Req. Error If this error is detected, turn off the printer, wait at least 5 seconds and turn it Paper Toner Memo Form Contin back on. If this error still occurs, refer to the error code list below for Cause Light Light...
  • Page 60 EPL-5700 Chapter3 Troubleshooting Abnormal Laser Table 3-10. Service Req. Error List(cont.) Laser diode emits light forcibly 200m sec after the polygon motor starts rotation, and adjusts its power. During this power is adjusted, this error is Paper Toner Memor Form Contin detected when the adjustment signal goes out of normal value.

  • Page 61: Paper Jam Sensor

    EPL-5700 Chapter3 Troubleshooting 3.3.2.2 Paper Jam Sensor Conditions 3.3.2 Paper Jam Sensor 3.3.2.1 Overview The paper feed sensor is not turned On within 2.8 seconds after the This sensor checks if there is any paper in the printer or not by detecting the paper feed starting(in other words, the paper feed roller starts rotating by conditions of signals from paper feed sensor and paper eject sensor.

  • Page 62: Troubleshooting

    EPL-5700 Chapter3 Troubleshooting 3.4.1.2 Paper Jam at Paper Feed and Transporting 3.4 TROUBLESHOOTING Table 3-12. Handling the Paper Jam2 Follow the number in the Check Item so that you can find out malfunction parts easily and perform necessary repair service. Check Item Remedy 1.Do the Paper feed roller and...

  • Page 63: Troubleshooting For Abnormal Operations

    EPL-5700 Chapter3 Troubleshooting 3.4.2.4 Power can not be turned on 3.4.2 Troubleshooting for Abnormal Operations 3.4.2.1 Abnormal Laser Table 3-16. Remedy for Abnormal Laser 4 Check Item Remedy Table 3-13. Remedy for Abnormal Laser 1 1.Is the power switch On? Turn the power switch On.

  • Page 64: Troubleshooting Print Quality Problems

    EPL-5700 Chapter3 Troubleshooting Table 3-18. Print Quality Problems 3.4.3 Troubleshooting Print Quality Problems Symptom Possible cause Solution When the print quality problems occur, exchange the toner cartridge and All black. Abnormal laser Exchange the Print drum cartridge first, then, find out that its cause comes from each cartridge emission.
  • Page 65 EPL-5700 Chapter3 Troubleshooting Table 3-20. Print Quality Problems Table 3-19. Print Quality Problems Symptom Possible Cause Solution Symptom Possible Cause Solution Foggy background. Defective developing Exchange the high Back of the paper is dirty. Fusing roller is dirty. *Exchange the fusing bias.

  • Page 66: Horizontal Lines

    EPL-5700 Chapter3 Troubleshooting 3.4.4 Horizontal Lines If the phenomenon shown below that black lines appear with certain spaces is caused by drum or rollers, defective parts can be determined by measuring its space between lines, as it is shown in Table 3-21. Space Space Figure 3-10.

  • Page 67: Disassembly And Assembly

    & + $ 3 7 ( 5 DISASSEMBLY AND ASSEMBLY...

  • Page 69: Overview

    EPL-5700 Chapter4 Disassembly and Assembly 4.1 OVERVIEW WARNING If you can not turn off the power because your service requires power, take off rings and This Chapter shows procedure for disassembly and assembly. watches, and wear laser protective goggles. When you using the protective goggles, use the 4.1.1 Precaution for Disassembly and Assembly one which meets following specifications.

  • Page 70: Recommended Tools

    EPL-5700 Chapter4 Disassembly and Assembly 4.1.2 Recommended Tools 4.1.4 Work Completion Check Use the tools listed in Table below for disassembling and assembling the If any service is made to the printer, use the check list shown below, to printer. confirm that all works are completed properly and the printer is ready to return to the user.

  • Page 71: Disassembly Procedure

    EPL-5700 Chapter4 Disassembly and Assembly 4.2 DISASSEMBLY PROCEDURE Start This section explains disassembly procedure for major mechanism and unit, which composes this printer. Refer to the flow chart. The assembly Paper Empty Sensor(PE1) Right Cover Removal Paper Feed Roller Removal Removal procedures are not described, except for special notes where necessary, because assembly can be accomplished by performing disassembly in...

  • Page 72: Preparation Before Disassembly

    EPL-5700 Chapter4 Disassembly and Assembly 4.2.1 Preparation Before Disassembly Before disassembling the printer, it is necessary to perform following Drum Cartridge preparation. 1. Push the release button located left side of the top cover, and open the top cover. Toner Cartridge 2.

  • Page 73: Right Cover Removal

    EPL-5700 Chapter4 Disassembly and Assembly CHECK POINT When assembling the right cover, attach it so that 4.2.2 Right Cover Removal two hooks of the cover can match with the corresponding holes on the printer side(shield 1. Lift up the tab part of the cover a little bit, which is fixing the right cover to cover).

  • Page 74: Paper Feed Roller Removal

    EPL-5700 Chapter4 Disassembly and Assembly 4.2.3 Paper Feed Roller Removal 4.2.4 Paper Empty Sensor Removal(PE1) 1. Open the paper feed roller cover. 1. Release the hook connecting the paper feed roller cover and the printer, 2. Remove one CP(O) screw(3x8) securing the paper feed roller to the opening the paper feed roller cover, and remove it, sliding it to the left shaft.

  • Page 75: Rom(C215Prog-B) Exchange

    EPL-5700 Chapter4 Disassembly and Assembly 4.2.5 ROM(C215PROG-B) Exchange ROM Board 1. Remove the right cover.(Refer to section .4.2.2) 2. Loosen two CBB screws(3x6) securing ROM cover to the shield cover of the main control board, and remove the cover. ROM Cover CBB(3x6) Lever Figure 4-8.

  • Page 76: Control Panel Removal

    EPL-5700 Chapter4 Disassembly and Assembly 4.2.6 Control Panel Removal Harness of the Control Panel Control Panel 1. Remove the right cover. (Refer to section 4.2.2) 2. Remove two CS screws(3x8) securing the control panel to the shield Hooks of the cover of the main board.(One screw is on the side of the cover and the Control Panel other one is on the top surface)

  • Page 77: Front Cover Removal

    EPL-5700 Chapter4 Disassembly and Assembly Holes for installing 4.2.7 Front Cover Removal the second paper feed unit 1. Remove the right cover.(See section. 4.2.2) 2. Remove the control panel. (Refer to section.4.2.6) 3. Remove one CS screw(3x8) securing the front cover to the shield cover of the main control board.

  • Page 78: Interlock Switch Removal

    EPL-5700 Chapter4 Disassembly and Assembly 4.2.8 Interlock Switch Removal 1. Remove the right cover.(See section 4.2.2) 2. Remove the control panel. (See section 4.2.6) 3. Remove the front cover. (See section 4.2.7) 4. Remove the harness of the inter lock switch from the switch. 5.

  • Page 79: Main Control Board Removal

    EPL-5700 Chapter4 Disassembly and Assembly Main Control Board 4.2.9 Main Control Board Removal 1. Remove the right cover.(See section 4.2.2) Serial I/F 2. Remove the control panel.(See section 4.2.6) Fixing Screw 3. Remove the front cover. (See section 4.2.7) Parallel I/F 4.

  • Page 80: Left Cover Removal

    EPL-5700 Chapter4 Disassembly and Assembly CHECK POINT When installing the left cover, install it so that 2 4.2.10 Left Cover Removal hooks of the left cover are inserted to the corresponding holes on the printer side. 1. Remove the right cover. (See section 4.2.2) 2.

  • Page 81: Print Head Unit Removal

    EPL-5700 Chapter4 Disassembly and Assembly 4.2.11 Print Head Unit Removal 1. Remove the right cover.(See section 4.2.2) Print Head 2. Remove the paper empty sensor.(See section 4.2.4) 3. Remove the control panel. (See section 4.2.6) CS(3x6) 4. Remove the front cover.(See section 4.2.7) 5.

  • Page 82: Paper Feed Roller Unit Removal

    EPL-5700 Chapter4 Disassembly and Assembly 7. Remove one CSB screws(3x8) securing the left paper feed guide holder 4.2.12 Paper Feed Roller Unit Removal to the left frame of the printer. 8. Remove one CSB screw(3x8) securing the paper feed guide holder and 1.

  • Page 83: Paper Feed Solenoid Removal

    EPL-5700 Chapter4 Disassembly and Assembly 12. Remove the harness of paper feed solenoid, which is connected to the 4.2.13 Paper Feed Solenoid Removal paper feed unit, from the connector at the paper guide. 1. Remove the right cover. (See section 4.2.2) CHECK POINT When installing the fixing screw, make sure that 2.

  • Page 84: Top Cover Removal

    EPL-5700 Chapter4 Disassembly and Assembly 4.2.14 Top Cover Removal If top cover is exchanged, be sure to perform Interlock Positioning Adjustment. (Refer to 1. Remove the right cover. (See section 4.2.2) Chapter5). 2. Remove the paper empty sensor.(See section 4.2.4) 3.

  • Page 85: Rear Cover Removal

    EPL-5700 Chapter4 Disassembly and Assembly 4.2.15 Rear Cover Removal 1. Remove the right cover. (See section 4.2.2) 2. Remove the paper empty sensor.(See section 4.2.4) 3. Remove the control panel. (See section 4.2.6) 4. Remove the front cover.(See section 4.2.7) Rear Cover 5.

  • Page 86: Fusing Unit Removal

    EPL-5700 Chapter4 Disassembly and Assembly 4.2.16 Fusing Unit Removal Fusig Unit CS(3x8) Paper Eject Sensor Harness CS(3x8) It is necessary to exchange the fusing unit every 50000 sheets. Thermister Harness Spacer CAUTION The life span of the transfer roller and fusing unit are same.

  • Page 87: Disassembling The Fusing Unit

    EPL-5700 Chapter4 Disassembly and Assembly 4. Remove the backup roller. 4.2.17 Disassembling the Fusing Unit 5. Refer to Figure4-25. 1)Move the front fusing guide board to the left side once, 2)remove the right side of the guide board, 3) remove the left side If you need to disassemble the fusing unit because of image quality of the guide board.
  • Page 88 EPL-5700 Chapter4 Disassembly and Assembly 6. Remove one CP(O) screw(3x6) and one CSB screw(3x8) securing the terminal board to the fusing unit. 7. Remove the heater lamp. Heat Roller Terminal Board CP(O)(3x6) CSB(3x8) Heater Lamp Voltage Indication Figure 4-26. Heater Lamp Removal CHECK POINT Do not touch the glass surface of the heater lamp with your bare-hands.

  • Page 89: Thermister, Thermostat Removal

    EPL-5700 Chapter4 Disassembly and Assembly 5. Remove four fusing unit separation claws. 4.2.17.2 Thermister, Thermostat Removal 6. Remove one CSB(3x8) screw securing the thermister to the fusing unit, and remove the thermister from the fusing unit. 1. Remove the fusing unit. (See Section 4.2.16) 7.

  • Page 90: Paper Eject Sensor(Ps3)

    EPL-5700 Chapter4 Disassembly and Assembly 4.2.17.3 Paper Eject Sensor(PS3) CHECK POINT Face down the sharp side of the separation claws as it is shown in Figure4-28, when 1. Remove the fusing unit. (See section 4.2.16) removing or installing them. 2. Release the connection between the sensor and lever, moving the lever Lay the harness of the thermister, as it is shown of the paper eject sensor.

  • Page 91: Transfer Roller Exchange

    EPL-5700 Chapter4 Disassembly and Assembly 3. Push down the lever of right and left transfer roller supports(white) toward 4.2.18 Transfer Roller Exchange front side, and remove the transfer roller from the transfer roller holder. It is necessary to exchange the transfer roller, approximately every 50000 4.

  • Page 92: Power Board Removal

    EPL-5700 Chapter4 Disassembly and Assembly 4.2.19 Power Board Removal Interlock Switch Harness Main Control Board 1. Remove the right cover. (See section 4.2.2) 2. Remove the paper empty sensor. (See section 4.2.4) 3. Remove the control panel. (See section 4.2.6) 4.
  • Page 93 EPL-5700 Chapter4 Disassembly and Assembly 13. Remove 2 CS screws(3x8), one CP(O) screw(3x6), one CP screw(4x6) and one out-teethed washer securing the power board to the power installation board, and remove the power board. CS(3x8) Power Board CP(O)(3x6) CS(3x8) CP(4x6) Out-teethed washwer Power Installation Board...

  • Page 94: High Voltage Board Removal

    EPL-5700 Chapter4 Disassembly and Assembly 4.2.20 High Voltage Board Removal Transfer Unit 1. Remove the right cover. (See section .4. 2.2) 2. Remove the paper empty sensor. (See section 4.2.4) Earth Plate 3. Remove the control panel. (See section 4.2.6) High Voltage Board High Voltage Board 4.

  • Page 95: Paper Sensor(Ps1) Removal

    EPL-5700 Chapter4 Disassembly and Assembly 4.2.21 Paper Sensor(PS1) Removal 4.2.22 Main Motor Removal 1. Remove the right cover.(See section 4.2.2) 1. Remove the right cover. (See section .4. 2.2) 2. Remove the paper empty sensor. (See section 4.2.4) 2. Remove the paper empty sensor. (See section 4.2.4) 3.

  • Page 96: Driving Unit Removal

    EPL-5700 Chapter4 Disassembly and Assembly 4.2.23 Driving Unit Removal ! : CS(3x6) 1. Remove the right cover. (See section. 4. 2.2) 2. Remove the paper empty sensor. (See section 4.2.4) 3. Remove the control panel. (See section 4.2.6) 4. Remove the front cover. (See section 4.2.7) CS(3x6) 5.

  • Page 97: Disassembly And Assembly For Optional Second Paper Feed Unit

    EPL-5700 Chapter4 Disassembly and Assembly 4.3 DISASSEMBLY AND ASSEMBLY FOR OPTIONAL SECOND PAPER FEED UNIT 4.3.1 Second Paper Feed Roller Exchange 1. Lift up the tab of the paper feed roller. (1) 2. Move the paper feed roller to (2) direction. 3.

  • Page 99: Adjustment

    & + $ 3 7 ( 5 ADJUSTMENT...

  • Page 101: Interlock Switch Position Adjustment

    EPL-7500 Chapter5 Adjustment 5.1 ADJUSTMENT This chapter explains adjustment procedure. Adjustment should be done after components and parts are exchanged. 5.1.1 Interlock Switch Position Adjustment If the printer power does not turn on when the top cover is closed even at the power switch on, perform the position adjustment of interlock switch by the following procedures.

  • Page 103: Maintenance

    & + $ 3 7 ( 5 MAINTENANCE...

  • Page 105: Mintenance

    EPL-7500 Chapter6 Maintenance 6.1 MINTENANCE 6.1.2 Service Maintenance This section gives information necessary for maintaining the printer in its Following maintenance should be done by qualified repair service men. optimum condition. Periodical user maintenance and service maintenance are necessary in order to maintain high printing quality. Table 6-2.

  • Page 107: Appendix

    & + $ 3 7 ( 5 APPENDIX...

  • Page 109: Conector Pin Assigments

    EPL-5700 Chapter7 Appendix Table 7-1. Connector List 7.1 CONECTOR PIN ASSIGMENTS Connector Function Pins Reference Figure below shows interconnections with main board. Tables C234 Main Board C234 Main-B Board ROM DIMM(not used) C215PROG-B (16 Mbit Mask Rom)/ ROM DIMM(optional C215PROG font)) Fusing (8 Mbit Flash ROM)
  • Page 110 EPL-5700 Chapter7 Appendix Table 7-2. Connector CN3 Pin Table 7-3. Connector CN3 Pin(Cont.) Signal Name Description Signal Name Description Ground Power 32bit data bus Address bus 32bit data bus Address bus 32bit data bus Address bus 32bit data bus Lead Signal 32bit data bus 32 bit data bus 32bit data bus...
  • Page 111 EPL-5700 Chapter7 Appendix Table 7-4. Connector CN3 Pin(Cont.) Table 7-5. Connector CN5 Pin Signal Name Description Signal Name Description 32bit data bus Ground 32bit data bus 32bit data bus 32bit data bus 32bit data bus Power 32bit data bus 32bit data bus 32bit data bus 32bit data bus 32bit data bus...
  • Page 112 EPL-5700 Chapter7 Appendix Table 7-6. Connector CN5 Pin(Cont.) Table 7-7. Connector CN5 Pin (Cont.) Signal Name Description Signal Name Description DRAM Address bus 32bit data bus RAS3X Row Address Strobing Signal 32bit data bus RAS2X Row Address Strobing Signal 32bit data bus Parity Data Bus(not used) 32bit data bus Parity Data Bus(not used)
  • Page 113 EPL-5700 Chapter7 Appendix Table 7-9. Connector CN7 Pin Table 7-10 . Connector CN9 Pin Signal Name Description Signal Name Description HSKo Serial synchronizing clock HSKi Transmission permission signal from host. LCDX LCD Controller enable signal TXD- Serial data output signal (not used) Ground Control/Data select signal of...

  • Page 114: Circuit Board Component Layout

    EPL-5700 Chapter7 Appendix 7.2 CIRCUIT BOARD COMPONENT LAYOUT Figure 7-3. C234 Main Control Board Component Layout(Rear) Figure 7-2. C234 Main Control Board Component Layout(Front) Rev. A...

  • Page 115: Exploded Diagram

    EPL-5700 Chapter7 Appendix 7.3 EXPLODED DIAGRAM Following pages show exploded diagrams of EPL-5700. 1. Housing 2. Paper Exit Section 3. Paper Take-Up Section 4. Fusing Unit 5. Drive/Transfer Unit 6. Frames I 7. Frames II 8. Optional 2 nd Lower Paper Feeding Section I 9.
  • Page 116 HOUSING 3504 3704 3504 3704 3705...

  • Page 117: Paper Exit Section

    PAPER EXIT SECTION 3704 3704 3704 3704...

  • Page 118: Paper Take-Up Section

    PAPER TAKE-UP SECTION 0601 9109 1308 3704 9109 3704 3704 3704...

  • Page 119: Fusing Unit

    FUSING UNIT 3704 1305 3704 1305 3923 3504 3704...

  • Page 120: Drive/Transfer Unit

    DRIVE/TRANSFER UNIT 3501 1308 3704 3907 1308 3907 3907 32 33...

  • Page 121: Frames I

    FRAMES I 3501 4012 3501 3501 3501 3504 8301 4012 4011 4011 3504 3501 2901 3501 3501...

  • Page 122: Frames Ii

    FRAMES II 3501 3504 1305 3704 2514 8302 3704 3501 3501 3704 3704...
  • Page 123 2ND PAPER TAKE-UP I(OPTION) 3504 3704 3501 3704 3501 PWB-A 3704 3704 SW21 3504 0509 9112 3501 3704 3704 9107 9112 3704 9107 3501 SL21 9107 9107 3704...
  • Page 124 2ND PAPER TAKE-UP II(OPTION) 3704 3704 3704...

  • Page 125: Circuit Diagram

    EPL-5700 Chapter7 Appendix 7.4 CIRCUIT DIAGRAM Circuit diagram of C234 main board is on the next pages. 1. C234 Main Board 1/2 2. C234 Main Board 2/2 3. C239 PROG Board(Depending on destinations) Rev. A 7-17...

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