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NOTICE All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION. 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.
PRECAUTIONS Precautionary notations throughout the text are categorized relative to 1)Personal injury and 2) damage to equipment. DANGER Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing procedures preceded by DANGER Headings. WARNING Signals a precaution which, if ignored, could result in damage to equipment.
PREFACE This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of EPL-5700. The instructions and procedures included herein are intended for the experienced repair technicians, and attention should be given to the precautions on the preceding page. The chapters are organized as follows: CHAPTER 1. PRODUCT DESCRIPTIONS Provides a general overview and specifications of the product. CHAPTER 2.
REVISION STATUS Rev.
TABLE OF CONTENTS PRODUCT DESCRIPTION 1.1 FEATURES.................................................................................................................................................................1-1 1.2 PAPER SPECIFICATION ...........................................................................................................................................1-6 1.3 PANEL OPERATION ..............................................................................................................
OPERATING PRINCIPLES 2.1 OPERATING PRINCIPLES OF MECHANISM............................................................................................................2-1 2.1.1 Overview.......................................................................................................................................................................................... 2-1 2.1.2 Paper Path ........................................................................................................................
2.1.9 Fusing Process ................................................................................................................................................................................2-11 2.1.9.1 Overview ................................................................................................................................................................................2-11 2.1.9.2 Fusing Temperature Control Circuit .....................................................................
3.4 TROUBLESHOOTING................................................................................................................................................3-10 3.4.1 Handling Paper Jam ........................................................................................................................................................................3-10 3.4.1.1 Paper Jam at power on ....................................................................................................................
4.2.8 Interlock Switch Removal ...............................................................................................................................................................4-10 4.2.9 Main Control Board Removal..........................................................................................................................................................4-11 4.2.10 Left Cover Removal ....................................................................................................
ADJUSTMENT 5.1 ADJUSTMENT..............................................................................................................................................................5-1 5.1.1 Interlock Switch Position Adjustment..............................................................................................................................................5-1 MAINTENANCE 6.1 MINTENANCE .............................................................................................................
&+$37(5 PRODUCT DESCRIPTION
EPL-5700 Chapter1 Product Description 1.1 FEATURES EPL-5700 is a small and compact A4 size page printer that semiconductor laser beam scanning is applied for. Following shows features. First print: Warm-up time: *2:Regarding printing with custom size(non-standard size)paper, the printing speed will become faster because cleaning takes place automatically. 19 seconds(A4/LTR), 18.2 seconds(B5) 17.3 seconds(A5), 20.
EPL-5700 Chapter1 Product Description Table 1-2. Paper Handling (Cont.) PAPER HANDLING Table 1-1. Paper Handling Paper supply method Multipurpose tray Capacity Supplied paper size 150 sheets*1 Standard paper types are those that fall within the range of those usable sizes given below. 76.2 x 127∼ 215.9 x355.
EPL-5700 Chapter1 Product Description CONTROLLER SPECIFICATION ENVIRONMENTAL CONDITION [Usage conditions including expendable parts] CPU RAM ROM Host interface RISC VR4300 100MHz Standard 4MB(EDO type) SIMM option: 1 32MB, 16MB, 8MB, 4MB (EDO type, 1 slot) Maximum 36MB(4MB(standard) + 32MB(expansion SIMM slot) Font: 2Mbytes(mounted on main board) Program: 4Mbytes (mounted on ROM DIMM board) Standard, Centronics, Bi-direnctional parallel IEEE-1284 nibble ECP RS232C Serial Type-B I/F: 1 slo
EPL-5700 Chapter1 Product Description ELECTRICAL SPECIFICATION DIMENSIONS 1) 2) 3) 4) 5) 6) 7) Power supply: 120 model 120V +/- 10%, 50-60Hz +/-3Hz 200V model 220 to 240V +/- 10%, 50-60Hz +/- 3Hz Electrical characteristic AC line noise: Pulse width: 50 to 1000 ns Pulse polarity: ± Repeat: non-simultaneous Modes: common/normal Voltage: 1kv However, the parts can withstand up to 2kv without damage. Instant cutoff: DIP 100%(for standard voltage-10%) for one cycle with normal print quality.
EPL-5700 Chapter1 Product Description APPLICABLE CERTIFICATION STANDARDS AND REGULATIONS [EMC] Table 1-5. EMC The specification of this engine meet the certification standards and regulations below. There are cases in which the standards and regulations that apply differently to products, including the controller, depending on their destination. Model Name 100V model [Safety Standards] 200V model Table 1-3. Safety Standards Model Name 120V model 200V model Applicable certification UL 1950 CSA 22.
EPL-5700 Chapter1 Product Description POWER CONSUMPTION 1.2 PAPER SPECIFICATION Power consumption Useable paper types are mentioned below. Standard Maximum current Power Maximum(during consumption warming up) Average during continuous printing Standby mode (average) heater on heater off*1 120V model 5.3A 580W 220-240V model 3.0A 580W Less than 200W Less than 40W Less than 15W Less than 210W Less than 40W Less than 15W Note)*1 Energy star compliment.
EPL-5700 Chapter1 Product Description CAUTION • Special ink-jet paper(surface fine paper, glossy PAPER SIZE paper, glossy film, etc). Table 1-7.Paper Size and Paper Feeding PAPER CLASSIFICATIONS Paper Type Table 1-6.Paper Classification Paper supply Paper Tray Lower Cassette** Standard paper Normal Paper (60 to 90 g/m2) Special Paper O ♦ 1* ♠ O ♦ X 2* ♠ 3* ♠ 4* ♠ 5* ♠ X X X X Note) 1* OHP 2* Government postcards. 3* Labels.
EPL-5700 Chapter1 Product Description 1.3 PANEL OPERATION 1.3.2.1 Switches 1.3.1 Power Switch Power switch is located left rear side of the printer. It controls power On/Off. 1.3.2 Control Panel The control panel of EPL-5700 is located right edge of the front printer. There are six LED lights and four non lock type switches. Paper Toner Memory Alt Continue Form Feed On Line Rev. A Switches the printer between on line and off line status.
EPL-5700 Chapter1 Product Description Memory LED(yellow): Displays a non-flashing light when either a Print Overrun or Mem Overflow error has occurred. Flashes when the resolution is reduced from 600 to 300 dpi, because of lack of memory size. Refer to Chapter 3 for error conditions. CAUTION This printer has EEPROM to maintain the function setting. Data-writing to EEPROM can not be guaranteed, if the power is turned off during writing.
EPL-5700 Chapter1 Product Description Table 1-10. Function Setting for the Control Panel(Cont.
EPL-5700 Chapter1 Product Description Table 1-12. Function Setting for the Control Panel(Cont.) Menu LJ4 Menu GL2 Menu Item Dest Symset • GL-Mode • Scale • Origin • Pen • End • Join • Pen0 • Pen1 • Pen2 *6 • Pen3 *6 • Pen4 *6 • Pen5 *6 • Pen6 *6 PS Menu • Error Sheet • Protect Level • MicroGray Value 0∼277∼3199 • GLlike, LJ4GL2 • Off, A0, A1, A2, A3 • Corner, Center *6 *6 • Pen0, Pen1, Pen2 , Pen3 , *6 *6 *6 Pen4 , Pen5 , Pen6 • Butt, Square, Triangular, Round. • Mitered, Miteredbeveled.
EPL-5700 Chapter1 Product Description Table 1-14. Function Setting for the Control Panel(Cont.) Menu FX Menu 1239X Menu • • • • • Item Auto CR Auto LF Bit Image ZeroChar Font • • • • • • Pitch • • Code Page • • • Text • • • • • • • • • • • • • Auto CR Auto LF Alt.Graphic Bit Image ZeroChar CharacterSet Value On, Off Off, On Dark, Light, BarCode 0, φ Courier, Prestige, Roman, Sans serif, Script, Orator S, OCR A, OCR B 10cpi, 12cpi, 15cpi, 17cpi, 20cpi, 24cpi,Prop. 437, 850, 860, 863, 865 0.
EPL-5700 *10 *11 *12 *13 *14 *15 *16 *17 Indicated only when NLSP EDG OEM Scalable Font ROM for 13 Greek* . Indicated only when NLSP EDG OEM Scalable Font ROM for 13 Cyrillic* . Indicated only when NLSP EDG OEM Scalable Font ROM for 13 Latin* . When changing the “SymSet” to this value, “Font Source” and “Front Number” is set to “Resident” and “0”. So it is necessary to change “Font Source” and “Front Number” to the font which supports this symbol set. Only applied to LJ4 and ESC/Page mode.
EPL-5700 Chapter1 Product Description Initialization of Panel Setting Values Turn on the power while pressing Continue switch, then the printer resets panel setting values to the original setting which were set at the factory. Then, printer goes to Warm Boot and returns to the normal condition. CAUTION If you fail to up-date the program ROM correctly, 1.3.4.
EPL-5700 Chapter1 Product Description 1.4 OPTIONS AND CONSUMABLE Following shows options and consumable for EPL-5700. Table 1-15.
&+$37(5 OPERATING PRINCIPLES
EPL-5700 Chapter2 Operating Principles 2.1 OPERATING PRINCIPLES OF MECHANISM Paper Eject Roller(F/U) Paper Eject Roller(F/D) Back Up Roller Heat Roller Charging Brush Transfer Roller OPC Drum 2.1.1 Overview Mechanism part of this printer consists of rollers, gears and main motor, which causes driving power in order to load the paper. Sleeve Roller Toner Feed Roller Main Motor Paper Feed Roller Connecting Gear Second paper feed Roller Second paper feed unit Figure 2-1. Mechanism Parts Rev.
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 installed. The paper once loaded is carried to the transfer roller→ Fusing roller →Paper eject roller → Paper eject tray.
EPL-5700 Chapter2 Operating Principles 2.1.3 Paper Feed Mechanism Paper feed mechanism is shown below. Paper Feed Sensor(PS1) Paper Feed Roller Paper Empty Sensor(SE1) Push down Cam Paper Feed Clutch 3. Separation pad method is used in order to separate each paper and prevents of feeding the second paper together. 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 sensor(PS1), and judges the paper size.
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 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 OFF condition. Also, if there is no paper, actuator falls into the hole of tray, and the sensor goes to ON condition. 2.1.4.
EPL-5700 Chapter2 Operating Principles 2.1.4.2 Paper Empty Sensor 2.1.4.3 Cassette Type Sensor On the relay board, the paper empty sensor is mounted and detects if there is any paper in the paper feed cassette. If there is any paper in the cassette, the actuator is stood up, and the sensor goes to OFF condition. If there is no paper, the actuator falls into the hole on the paper lifting up plate, and the sensor is turned ON.
EPL-5700 Chapter2 Operating Principles 2.1.5 Laser Exposure 2.1.5.1 Sub Scanning Direction(Vertical scanning direction) An electrostatic latent image is created on the OPC drum by the laser beam emitted from the print head. In order to count appropriate timing to print the image, following control is performed. 1. After the printer receives printing signal, the polygon motor(M2) and main motor(M1) rotate, and paper feeding starts. 2.
EPL-5700 Chapter2 Operating Principles 2.1.5.2 Main Scanning Direction(Horizontal scanning direction) 2.1.6 Charging Process 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. 2.1.6.1 Overview (Refer to Figure2-9 on the next page) 2.1.5.3 Printable Area 1. Controller sends /VIDEO signal, which suits the paper size, to the engine. 2.
EPL-5700 Chapter2 Operating Principles 15msec 10msec 2.1.6.2 Cleaning OPC drum -1286V Toner which is not transferred to the paper because of paper jam or paper size error needs to be cleaned since it remains on the OPC drum and makes its surface dirty. Cleaning sequence is as follows. 1. Although toner on the OPC drum is collected by the rotation brush, since it is accumulated on the surface, toner which is charged plus is changed to minus by charging bias -1280VDC to the rotation brush.
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 OPC drum. OPC Drum Toner Hopper Toner Agitation Wing Toner Blade Table 2-1.
EPL-5700 Chapter2 Operating Principles OPC drum 2.1.8 Transfer Process 2.1.8.1 Overview Transfer roller Paper Discharge Needle Transfer rolle Transfer bias (3KV) OPC drum Reversed bias (-1KV) 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.
EPL-5700 Chapter2 Operating Principles 2.1.9.2 Fusing Temperature Control Circuit 2.1.9 Fusing Process 2.1.9.1 Overview In this process, toner which is transferred to the paper in the transfer process is fused to the paper. Fusing system this printer uses is the heat roller fusing system. The toner on the paper is melted by pressure from the paper traveling through the back up roller and the heat roller, which is heated up by the heater lamp. The heat roller is mounted at 200M Ω.
EPL-5700 Chapter2 Operating Principles Temperature detected by thermister Heat Roller Temperature( C) Warm-up During printing Table 2-3. Heat Roller Temperature Control Temperature control before it is interrupted. 185 175 Mode1 Mode2, 3, or power is off. Waiting mode 2.1.9.3 Prevention of paper bent from the fusing Mode3 Sometime the paper ejected from the fusing is bent in wave shape. The reason why this happens is that the temperature around the fusing roller is not even.
EPL-5700 Chapter2 Operating Principles Face-down eject Paper is ejected to the face down tray located upper side of the printer. 2.1.10 Paper Eject 2.1.10.1 Face up/Face down disengage mechanism The paper which passed the fusing is ejected either face-up or face-down by the disengage mechanism. By operating the disengage lever manually, which is located at the paper eject mouth, tray disengage guide in the printer also operates and changes over the face-up eject or face-down eject.
EPL-5700 Chapter2 Operating Principles Table 2-5. Function of Each Electric Parts 2.2 ELECTRIC CIRCUIT Electric circuit of this printer consists of main control circuit, power supply unit, high voltage board, laser diode control board(in the print head unit). Following shows location of electric circuit, sensors and motors. Table2-6 shows function of each circuit and board.
EPL-5700 Chapter2 Operating Principles Table 2-6. Function of Each Electric Parts(Cont.) Name Inter lock switch (S2) Laser diode control board Paper feed solenoid (SL1) Thermister (TH1) Thermostat(TS1) Function Detects open/close condition of the upper cover and blocks output power except DC5V, when the cover is opened. • Cover is closed; On Detects printing start position by emission of the laser diode and SOS sensor, and emits the laser beam to the OPC drum by image signal.
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 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.
EPL-5700 Chapter2 Operating Principles Main composition elements and functions of C234 Main-B board are following. Table 2-8. Main elements of main controller in C234 Main-B board Name CPU µPD30200GD ASIC E05B41BA Location IC1 IC4 ASIC E05B41BA IC10 ASIC E05B28KA IC16 Program ROM/Mask ROM CN3 DRAM IC14/15 Mask ROM IC5/6 EEPROM NM93C86A IC9 Option Font ROM CN2 Rev. A Function RISC-CPU Table 2-9.
&+$37(5 TROUBLESHOOTING
EPL-5700 Chapter3 Troubleshooting 3.1 OVERVIEW 3.2.2 Coil Resistance of Main Motor Like other page printers, there are many error modes in this printer, making identification of failed parts or component more difficult. In order to solve this problem, this chapter shows how to check and identity malfunction from the major components, and how to identify the causes from the errors or abnormal symptom.
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.
EPL-5700 Chapter3 Troubleshooting Table 3-5. Printer Message List (Cont.) 3.3 PRINTER CONDITION Condition Toner out 3.3.1 Indication This printer always monitors its condition and indicate it on the control panel by necessity. Indication of the printer condition are classified following as follows. Status: No error. Error: Error occurs. Warning : Warning occurs. Service Req. Error: Service Req. Error occurs and requires service by service man. Table 3-4.
EPL-5700 3.3.1.2 “Error” Conditions Here explains error condition and procedure to recover from it. Paper Jam. Paper is jammed in the printer path. Open the top cover(printer cover) and clear the jammed paper. After jam is cleared and warming-up is completed, the jammed page’s print data is automatically printed. Exit Paper Jam. Paper jam occurs around the OPC drum(photo conductor unit). This error is also indicated when the paper jam occurs around the paper exit area.
EPL-5700 Chapter3 Troubleshooting Memory Overflow The printer has insufficient memory available for the current task. If “Auto Cont” on the panel setting is set off(refer to page1-10), Press the Continue switch on the control panel. If the error occurs because the current task data exceeds the buffer capacity, the printer prints out the page forcibly, which was made before the error occurs.
EPL-5700 Chapter3 Troubleshooting 3.3.1.3 “Warning” Conditions Here explains warning conditions and how to cancel it. Even if warning conditions occur, they do not effect on the printer’s operation. Check Paper Size The paper size setting is different from the size loaded in the printer. Check to see if the correct size of paper is loaded in the tray, then, Press Continue switch. Perform reset or warm boot. Note) If “Size Ignore” is On in the printer driver, this warning does not occur.
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 back on. If this error still occurs, refer to the error code list below for troubleshooting. Table 3-8. Service Req.
EPL-5700 Chapter3 Troubleshooting Table 3-10. Service Req. Error List(cont.
EPL-5700 Chapter3 Troubleshooting 3.3.2 Paper Jam Sensor 3.3.2.2 Paper Jam Sensor Conditions 3.3.2.1 Overview This sensor checks if there is any paper in the printer or not by detecting the conditions of signals from paper feed sensor and paper eject sensor. The paper jam sensor during the paper passing in the printer monitors condition by detecting rise and fall of paper feed sensor signal and paper eject sensor signal.
EPL-5700 Chapter3 Troubleshooting 3.4.1.2 Paper Jam at Paper Feed and Transporting 3.4 TROUBLESHOOTING Follow the number in the Check Item so that you can find out malfunction parts easily and perform necessary repair service. 3.4.1 Handling Paper Jam 3.4.1.1 Paper Jam at power on Table 3-11. Handling the Paper Jam 1 Check Item 1. Is there any paper left? 2.Does the actuators of paper feed sensor, paper eject sensor work? Yes No Yes Remedy Remove all papers.
EPL-5700 Chapter3 Troubleshooting 3.4.2 Troubleshooting for Abnormal Operations 3.4.2.1 Abnormal Laser Table 3-16. Remedy for Abnormal Laser 4 Table 3-13. Remedy for Abnormal Laser 1 Check Item 1.Laser diode is abnormal. --- Remedy • Exchange the print head unit. • Exchange main control board. 3.4.2.2 Abnormal Polygon Motor Table 3-14. Remedy for Abnormal Laser 2 Check Item 1.Polygon motor is abnormal. 3.4.2.4 Power can not be turned on --- Remedy • Exchange the print head unit.
EPL-5700 Chapter3 Troubleshooting Table 3-18. Print Quality Problems 3.4.3 Troubleshooting Print Quality Problems When the print quality problems occur, exchange the toner cartridge and drum cartridge first, then, find out that its cause comes from each cartridge or from the printer. Symptom All black. Possible cause Abnormal laser emission. Solution • Exchange the Print head. • Exchange the main control board. Abnormal charging. • Exchange the high voltage board. • Exchange the main control board.
EPL-5700 Chapter3 Troubleshooting Table 3-20. Print Quality Problems Table 3-19. Print Quality Problems Symptom Back of the paper is dirty. Possible Cause Fusing roller is dirty. Transfer roller is dirty. Solution *Exchange the fusing roller or fusing unit. (Refer to Note* below) *Exchange the transfer roller. (Refer to Note* below) Symptom Foggy background. Possible Cause Defective developing bias. End of life of OPC drum Solution Exchange the high voltage board. Exchange drum cartridge.
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. Horizontal Lines with Spaces Table 3-21. Finding defective parts Parts Name Toner cartridge Sleeve Drum cartridge OPC drum Transfer roller Roller Fusing unit Heat roller Back-up roller Rev.
&+$37(5 DISASSEMBLY AND ASSEMBLY
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 watches, and wear laser protective goggles. When you using the protective goggles, use the one which meets following specifications. Maximum. Power: 5mW Output wave-length: 780-810nm This Chapter shows procedure for disassembly and assembly. 4.1.
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 printer. If any service is made to the printer, use the check list shown below, to confirm that all works are completed properly and the printer is ready to return to the user. Table 4-1. Recommended Tools Name + Screw driver #1 + Screw driver #2 Screw driver Tweezers Round-nose pliers Availability O O O O O Table 4-3.
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 procedures are not described, except for special notes where necessary, because assembly can be accomplished by performing disassembly in reverse order. Refer to the exploded diagram in the end of this book when you need to disassemble the parts, which are not mentioned.
EPL-5700 Chapter4 Disassembly and Assembly 4.2.1 Preparation Before Disassembly Before disassembling the printer, it is necessary to perform following preparation. Drum Cartridge 1. Push the release button located left side of the top cover, and open the top cover. 2. Take the toner cartridge out of the printer. 3. Take the drum cartridge out of the printer. 4. Remove the paper feed tray. 5. If the optional face-up tray is attached, remove it.
EPL-5700 Chapter4 Disassembly and Assembly 9CHECK POINT 4.2.2 Right Cover Removal 1. Lift up the tab part of the cover a little bit, which is fixing the right cover to the hook of the shield cover, and release the fixing. 2. Pushing the right cover toward back a little bit, remove the cover to the right side. Hook of Shield Cover When assembling the right cover, attach it so that two hooks of the cover can match with the corresponding holes on the printer side(shield cover). Refer to figure4-4.
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. 2. Remove one CP(O) screw(3x8) securing the paper feed roller to the shaft. 3. Remove the paper feed roller. 1. Release the hook connecting the paper feed roller cover and the printer, opening the paper feed roller cover, and remove it, sliding it to the left side. 2.
EPL-5700 Chapter4 Disassembly and Assembly 4.2.5 ROM(C215PROG-B) Exchange 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 Board ROM Cover CBB(3x6) Lever Figure 4-8. ROM Board Removal 9CHECK POINT Figure 4-7. ROM Cover Removal If ROM is Flash-ROM(C215PROG), up-date ROM program by power on operation on the control panel. (See Chapter 1) 3.
EPL-5700 Chapter4 Disassembly and Assembly 4.2.6 Control Panel Removal 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 cover of the main board.(One screw is on the side of the cover and the other one is on the top surface) Control Panel Harness of the Control Panel Hooks of the Control Panel CS(3x8) Front Cover Figure 4-10. Control Panel Removal Figure 4-9. Fixing Screws for Control Panel 3.
EPL-5700 Chapter4 Disassembly and Assembly Holes for installing the second paper feed unit 4.2.7 Front Cover Removal 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. Upper Edge Hooks at Front Cover Left Edge Hook Right Edge Hook Figure 4-12. Lower Edge Hooks of the Front Cover Front Cover CS(3x8) Figure 4-11. Fixing Screws at the Front Cover 4.
EPL-5700 Chapter4 Disassembly and Assembly 4.2.8 Interlock Switch Removal 1. 2. 3. 4. 5. Remove the right cover.(See section 4.2.2) Remove the control panel. (See section 4.2.6) Remove the front cover. (See section 4.2.7) Remove the harness of the inter lock switch from the switch. Remove one CS screw(3x5) securing inter lock switch bracket to the printer. 6. Remove two CP(O) screws securing the inter lock switch to the bracket, and remove the inter lock switch.
EPL-5700 Chapter4 Disassembly and Assembly 4.2.9 Main Control Board Removal 1. 2. 3. 4. Remove the right cover.(See section 4.2.2) Remove the control panel.(See section 4.2.6) Remove the front cover. (See section 4.2.7) Remove ten CBS screws(3x6) securing the shield cover of the main control board to the printer, and remove the shield cover. (In the figure, CBS screws are marked with ∇) Main Control Board Serial I/F Fixing Screw Parallel I/F Fixing Screw Parallel I/F Fixing Screw Figure 4-15.
EPL-5700 Chapter4 Disassembly and Assembly 4.2.10 Left Cover Removal 1. 2. 3. 4. 5. 6. Remove the right cover. (See section 4.2.2) Remove paper feed roller cover. (See section 4.2.4) Remove the control panel.(See section 4.2.6) Remove the front cover. (See section 4.2.7) Remove two CS screws(3x8) securing the left cover to the printer. Lift up the left cover a little bit, and remove it to left side.
EPL-5700 Chapter4 Disassembly and Assembly 4.2.11 Print Head Unit Removal 1. 2. 3. 4. 5. 6. 7. Remove the right cover.(See section 4.2.2) Remove the paper empty sensor.(See section 4.2.4) Remove the control panel. (See section 4.2.6) Remove the front cover.(See section 4.2.7) Remove the left cover. (See section 4.2.10) Remove the shield cover of the main control board. (See section 4.2.9) Remove the harness of the print head unit from CN205 and CN209 on the board. 8.
EPL-5700 Chapter4 Disassembly and Assembly 4.2.12 Paper Feed Roller Unit Removal 1. 2. 3. 4. 5. 6. Remove the right cover. (See section 4.2.2) Remove the paper empty sensor.(See section 4.2.4) Remove the control panel. (See section 4.2.6) Remove the front cover.(See section 4.2.7) Remove the left cover. (See section 4.2.10) Remove two CS screws(3x6) securing the manual feed guide to the frame of the printer, and remove the manual feed guide. Paper Feed Guide Holder at left side 7.
EPL-5700 Chapter4 Disassembly and Assembly 12.Remove the harness of paper feed solenoid, which is connected to the paper feed unit, from the connector at the paper guide. 9CHECK POINT When installing the fixing screw, make sure that the paper feed unit is in the frame.(See “B” in figure4-19) 4.2.13 Paper Feed Solenoid Removal 1. 2. 3. 4. 5. 6. 7. Remove the right cover. (See section 4.2.2) Remove the paper empty sensor.(See section 4.2.4) Remove the control panel. (See section 4.2.
EPL-5700 Chapter4 Disassembly and Assembly 4.2.14 Top Cover Removal 1. 2. 3. 4. 5. 6. $'-8670(17 Remove the right cover. (See section 4.2.2) Remove the paper empty sensor.(See section 4.2.4) Remove the control panel. (See section 4.2.6) Remove the front cover.(See section 4.2.7) Remove the left cover.(See section 4.2.10) Push both left and right hinges of the top cover toward arrow directions in figure 4-21 and remove the top cover.
EPL-5700 Chapter4 Disassembly and Assembly 4.2.15 Rear Cover Removal 1. 2. 3. 4. 5. 6. 7. Remove the right cover. (See section 4.2.2) Remove the paper empty sensor.(See section 4.2.4) Remove the control panel. (See section 4.2.6) Remove the front cover.(See section 4.2.7) Remove the left cover.(See section 4.2.10) Remove the top cover. (See section 4.2.14) Remove two CBB screws(3x8), three CS screws(3x6) and one CP screw with out-teethed washer securing the rear cover to the printer. 8.
EPL-5700 Chapter4 Disassembly and Assembly 4.2.16 Fusing Unit Removal It is necessary to exchange the fusing unit every 50000 sheets. Fusig Unit CS(3x8) Paper Eject Sensor Harness Thermister Harness CS(3x8) Spacer CAUTION The life span of the transfer roller and fusing unit are same. So, if you need to exchange the fusing roller because of worn-out or etc., make sure to exchange the transfer roller too. (See section 4.2.18) 1. 2. 3. 4. 5. 6. 7. 8. Remove the right cover. (See section 4.2.
EPL-5700 Chapter4 Disassembly and Assembly 4.2.17 Disassembling the Fusing Unit If you need to disassemble the fusing unit because of image quality problems and defective parts, follow the procedure below. 4. Remove the backup roller. 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 of the guide board. 4.2.17.1 Heater Lamp Removal 1. Remove the fusing unit. (See section 4.2.16) 2.
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 9CHECK POINT Rev. A Do not touch the glass surface of the heater lamp with your bare-hands. When installing the heater lamp, the side that indicates lamp voltage should come to the terminal board side.
EPL-5700 Chapter4 Disassembly and Assembly 4.2.17.2 Thermister, Thermostat Removal 1. 2. 3. 4. Remove the fusing unit. (See Section 4.2.16) Remove the heater lamp.(See section 4.2.17.1) Remove the driven gear from the heat roller. 1)Move the heat roller to the right side once, 2)Move it to (2) direction shown in the figure, 3) Pull the roller out toward (3) direction. 9CHECK POINT 5. Remove four fusing unit separation claws. 6.
EPL-5700 Chapter4 Disassembly and Assembly 9CHECK POINT 4.2.17.3 Paper Eject Sensor(PS3) Face down the sharp side of the separation claws as it is shown in Figure4-28, when removing or installing them. Lay the harness of the thermister, as it is shown figure4-29. 1. Remove the fusing unit. (See section 4.2.16) 2. Release the connection between the sensor and lever, moving the lever of the paper eject sensor. 3.
EPL-5700 Chapter4 Disassembly and Assembly 4.2.18 Transfer Roller Exchange It is necessary to exchange the transfer roller, approximately every 50000 sheets. CAUTION Since the life span of the transfer roller and fusing unit are same, if you need to exchange the transfer roller because of worn-out or etc., make sure to exchange the fusing unit.
EPL-5700 Chapter4 Disassembly and Assembly 4.2.19 Power Board Removal 1. 2. 3. 4. 5. 6. 7. 8. 9. Remove the right cover. (See section 4.2.2) Remove the paper empty sensor. (See section 4.2.4) Remove the control panel. (See section 4.2.6) Remove the front cover.(See section 4.2.7) Remove the shield cover of the main control board. (See section 4.2.9) Remove the left cover.(See section 4.2.10) Remove the top cover. (See section 4.2.14) Remove the rear cover. (See section 4.2.
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. Power Board CS(3x8) CP(O)(3x6) CS(3x8) CP(4x6) Out-teethed washwer Power Installation Board Figure 4-34. Power Board Removal Rev.
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) 3. Remove the control panel. (See section 4.2.6) 4. Remove the front cover. (See section 4.2.7) 5. Remove the shield cover of the main control board. (See section 4.2.9) 6. Remove the left cover.(See section 4.2.10) 7. Remove the top cover. (See section 4.2.14) 8. Remove the rear cover. (See section 4.2.15) 9.
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) 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) 5. Remove the shield cover of the main control board. (See section 4.2.9) 6. Remove the left cover.(See section 4.2.10) 7. Remove the top cover. (See section 4.2.14) 8. Remove the rear cover. (See section 4.2.
EPL-5700 Chapter4 Disassembly and Assembly 4.2.23 Driving Unit Removal #3" X 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) 5. Remove the shield cover of the main control board. (See section 4.2.9) 6. Remove the left cover.(See section 4.2.10) 7. Remove the top cover. (See section 4.2.14) 8. Remove the rear cover. (See section 4.2.15) 9.
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. 2. 3. 4. Lift up the tab of the paper feed roller. (1) Move the paper feed roller to (2) direction. Remove the paper feed roller toward (3) direction. Install the new paper feed roller in reverse order. Paper Feed Roller (3) (1) (2) Tab of Paper Feed Roller Figure 4-39. Second Paper Feed Roller Removal Rev.
&+$37(5 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. 1. Remove right cover, left cover and front cover. 2.
&+$37(5 MAINTENANCE
EPL-7500 Chapter6 Maintenance 6.1 MINTENANCE 6.1.2 Service Maintenance This section gives information necessary for maintaining the printer in its optimum condition. Periodical user maintenance and service maintenance are necessary in order to maintain high printing quality. Maintenance items described in this section are divided into two subsections: user maintenance and service maintenance.
&+$37(5 APPENDIX
EPL-5700 Chapter7 Appendix Table 7-1. Connector List 7.1 CONECTOR PIN ASSIGMENTS Connector Function Pins Reference Tables ----- ----- 72 --72 36 8 --26 ------ Table7-2∼7-4 --Table7-5∼7-7 Table7-8 Table 7-9 --Table7-10 ----- 2 2 11 7 4 5 3 5 2 12 --------------------- 4 --- 11 ---- 5 2 3 --------- Figure below shows interconnections with main board.
EPL-5700 Chapter7 Appendix Table 7-2. Connector CN3 Pin Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Rev.
EPL-5700 Chapter7 Appendix Table 7-4. Connector CN3 Pin(Cont.) Pin 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 Rev. A Signal Name D26 D28 D27 Vcc D29 D30 D31 A18 A21 A22 A23 IDX NC A19 GND I/O I/O I/O I/O --I/O I/O I/O O O O O I --O --- Description 32bit data bus 32bit data bus 32bit data bus Power 32bit data bus 32bit data bus 32bit data bus Address bus Address bus Address bus Address bus ROM DIMM in/out signal Not used Address bus Ground Table 7-5.
EPL-5700 Chapter7 Appendix Table 7-6. Connector CN5 Pin(Cont.) Pin 32 33 34 35 36 37 38 39 40 Signal Name A9 RAS3X RAS2X MP2 MP0 MP1 MP3 GND CAS0X I/O O O O I/O O I/O I/O --O 41 CAS2X O 42 CAS3X O 43 CAS1X O 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 RAS0X RAS1X NC WEX NC D8 D24 D9 D25 D10 D26 D11 D27 D12 D28 Vcc D29 D13 O O O O O I/O I/O I/O I/O I/O I/O O I/O I/O I/O --I/O I/O Rev.
EPL-5700 Chapter7 Appendix Table 7-9. Connector CN7 Pin Pin 1 2 Signal Name HSKo HSKi I/O O I 3 4 5 6 7 TXDGND RXD+ TXD+ GPi O -I O O 8 Rev. A RXD+ I Description Serial synchronizing clock Transmission permission signal from host. Serial data output signal Ground Serial data input signal Serial data output signal Signal to let the host know that communication is available. Serial data input signal Table 7-10 .
EPL-5700 Chapter7 Appendix 7.2 CIRCUIT BOARD COMPONENT LAYOUT Figure 7-2. C234 Main Control Board Component Layout(Front) Rev. A Figure 7-3.
EPL-5700 Chapter7 Appendix 7.3 EXPLODED DIAGRAM Following pages show exploded diagrams of EPL-5700. 1. 2. 3. 4. 5. 6. 7. 8. 9. Housing Paper Exit Section Paper Take-Up Section Fusing Unit Drive/Transfer Unit Frames I Frames II Optional 2 nd Lower Paper Feeding Section I Optional 2 nd Lower Paper Feeding Section II Rev.
1 HOUSING 12 02 15 01 11 04 10 3504 14 3704 03 3504 16 3704 09 08 3705 05 06 07 13
2 PAPER EXIT SECTION 08 3704 01 01 07 02 3704 03 05 06 02 04 3704 05 3704
3 PAPER TAKE-UP SECTION 06 01 05 03 19 07 08 04 0601 9109 1308 09 02 23 10 3704 11 22 24 03 9109 21 20 12 01 13 25 17 SL1 3704 15 16 18 3704 14 3704
4 FUSING UNIT 12 13 11 PS3 08 05 07 09 06 10 H1 03 3704 1305 07 04 15 16 3704 15 15 08 1305 15 17 3923 TH1 18 3504 01 22 TS1 14 02 23 3704 19 20 21
5 DRIVE/TRANSFER UNIT 02 03 39 01 3501 M1 1308 3704 42 04 05 06 09 41 07 08 10 15 37 38 14 22 11 21 13 20 12 23 19 18 36 17 35 HV1 16 1308 3907 24 3907 3907 40 25 28 34 29 PS2 26 27 30 31 32 33
6 FRAMES I 17 3501 4012 18 19 3501 01 02 3501 16 PE1 3501 3504 03 20 8301 04 4012 4011 17 05 4011 05 21 15 22 3504 13 12 14 S2 3501 12 11 2901 3501 07 10 08 06 3501 06 09 06 06
7 FRAMES II 3501 02 3504 03 PU1 1305 3704 01 2514 8302 04 06 14 15 16 05 13 07 07 08 3704 PH 09 3501 12 10 11 3704 3704 3501
8 2ND PAPER TAKE-UP I(OPTION) 3504 3704 10 08 01 09 04 09 3501 3704 11 02 3501 07 15 3704 03 05 PWB-A 14 12 08 3704 06 13 29 12 3504 16 28 17 0509 03 SW21 30 18 19 9112 20 04 3501 3704 21 27 3704 9107 22 9112 3704 9107 23 3501 9107 22 9107 31 22 SL21 25 24 25 26 3704 25 25
9 2ND PAPER TAKE-UP II(OPTION) 01 06 02 03 06 05 04 3704 14 04 08 08 07 3704 14 13 12 11 09 10 3704 01
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.
