Epson M2000 Service Manual
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SERVICE MANUAL A4 monochrome Laser PrinterEPSON AcuLaser M2000D M2000DNM2010DM2010DN
Notice: The purpose of this manual is to provide the product knowledge and the technical information required for repair or maintenance of EPSON AcuLaser M2000D/M2000DN/M2010D/M2010DN.† 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, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION. † This manual contains information and sensitive matters, special care should be taken when handling the manual. † The contents of this manual are subject to change without prior notice as a result of continuing improvements to the product’s performance and functions. Some of the descriptions or the appearance of some parts in this manual may differ from those on an actual product. Other product names used herein are for identification purpose only and may be trademarks or registered trademarks of their respective owners. EPSON disclaims any and all rights in those marks. Copyright © SEIKO EPSON CORPORATION 2008. Imaging Products CS, PL & Environmental Management
This manual consists of the following seven chapters:Various symbols are used throughout this manual either to provide additional information on a specific topic or to warn of possible danger present during a procedure or an action. Be sure to read and understand the information with these symbols.CHAPTER 1 PRODUCT DESCRIPTIONS
Describes the main features, basic specifications, consumable products, periodic replacement parts, and controller interface of the product.
CHAPTER 2 OPERATING PRINCIPLES
Describes each mechanism configurations and explains fundamental operating principle of major components including the control system.
CHAPTER 3 TROUBLESHOOTING
Describes the troubleshooting procedures that can help you diagnose and resolve problems. The problems are sorted by displayed error codes and phenomena of abnormal image output.
CHAPTER 4 DISASSEMBLY/ASSEMBLY
Describes the step-by-step procedures for disassembling and assembling of the product.
CHAPTER 5 ADJUSTMENT
Describes the settings and the adjustments to be performed during the maintenance work.
CHAPTER 6 MAINTENANCE
Describes preventive maintenance procedures.
CHAPTER 7 APPENDIX
Provides the additional information such as panel operations, connector pin layouts, parts list, and exploded diagrams for reference.
Manual ConfigurationSymbols Used in this Manual
Indicates an operating or maintenance procedure, practice or condition that, if not strictly observed, would result in injury or loss of life.Indicates an operating or maintenance procedure, practice or condition that, if not strictly observed, could result in injury or loss of life.Indicates an operating or maintenance procedure, practice or condition that, if not strictly observed, could result in personal injury or may cause damage to, or destruction of equipment.Indicates a prohibited action during maintenance work.Indicates a mandatory action during maintenance work.
„
Indicates an operating or maintenance procedure, practice or condition that is necessary to accomplish a task efficiently.
„
Provides additional information that is related to a specific subject, or comment on the results achieved through a previous action.
Indicates a product reassembly procedure, practice or condition that must be executed in accordance with the specified standards to maintain the product’s quality.
Indicates an operating or maintenance procedure, practice or condition that must be executed in accordance with the specified standards to maintain the product’s quality.
Safety-related SymbolsSafety Equipment† List of Safety Equipment † Location of Safety Equipment Indicates an operating or maintenance procedure, practice or condition that, if not strictly observed, would result in injury or loss of life.Indicates an operating or maintenance procedure, practice or condition that, if not strictly observed, could result in injury or loss of life.Indicates an operating or maintenance procedure, practice or condition that, if not strictly observed, could result in personal injury or may cause damage to, or destruction of equipment.Never deactivate the safety equipment installed on the product for any reason whatsoever. (e.g. Making a connection circuit bypasses the safety equipment.) Name Function/Purpose Interlock switch Shuts off 24 V DC power line when the Top cover is opened. Safety
† Safety System Wiring Schematic +5V1SLEEP+24V1+24V2FA N+3.3V1ZCROSSHEATNTHERM LVPS Left coolingfan motor Fuser thermistor Fuser thermal cutout Fuser unit Switchingregulatorcircuit Zero crosssignal circuit AC input Interlockswitch Power switch Fuser heaterlamp controlcircuit Fuserheater lamp
Laser Beam† Laser Opening Location † Handling Precautions „ Disassembling and adjustment procedures not specified herein may result in hazardous radiation exposure. „ Do not disassemble or attempt to adjust the Laser Scanner unit for any reason whatsoever. When the Laser Scanner unit malfunctions, replace it with a new one. Laser OpeningsLaser Scanner Unit
Prohibited Matters† Never deactivate the safety equipment installed on the product for any reason whatsoever. † Never modify the safety equipment or replace it with part not approved by EPSON. Doing so may cause the safety functions to stop working properly, and may result in fire or injury. † Never modify the product. If you are instructed to do so, however, fully understand the instruction and perform the modification. To prevent an electric shock, burn, injury, etc., always turn the printer off and unplug the power cord before starting maintenance work. When the power supply cable must be connected to measure voltage or for any other task, strictly follow the instructions and use extreme caution in working on electronic components.Pay particular attention to the high-voltage part indicated with the symbol on the left.Do not touch the high temperature parts indicated with the symbol on the left. Those parts are extremely hot immediately after use. If you need to replace those parts, leave the printer until it cools. Use the specified service parts for repair and maintenance.When using compressed air products; such as air duster, for cleaning during repair and maintenance, the use of such products containing flammable gas is prohibited. Connect the printer to an electrical outlet that matches the printer’s rated voltage and power requirements.Do not connect any other devices to the electrical outlet supplying the printer. Doing so can cause overloading of the electrical circuit and may cause a fire.Do not use extension cords or power adapters to plug multiple devices into the same outlet. Power plug and electrical outlet should be free from dust or foreign objects.The printer should be properly grounded to prevent electric shock. The grounding terminal should be one of the followings:a. One of the electrical outletb. One that is grounded by a D-type grounding construction. (The former third-type grounding construction; grounding resistance under 100 Ω ). Power cord should not be deformed or damaged. If the cord is damaged, replace it with a new one dedicated for the product.After replacing the Fuser Unit or any other parts to which AC voltage is applied, be sure to check the part is properly installed and the connecting cables are not caught between metal parts. Otherwise a fire or an electric shock may occur.Fuse on the Power Supply Unit must not be replaced under any circumstances.
Before performing repair and maintenance work, read and understand the documents of the product (e.g. service manual). Be sure to follow the specified steps and use the prescribed tools described in the documents.When disassembling or assembling the product, make sure to wear gloves to avoid injury from metal parts with sharp edges.Take care not to drop any screws, washers, or clips inside the printer body. Should it fall in, do not boot up your printer until the part has been safely removed.After reassembling the printer, make sure all the parts and the screws are put back in place and the cables are not caught between metal parts.Though toner and developer are safe for human body, they may cause irritation to skin and eyes. If toner gets into your eyes, wash it away immediately with water. If irritation continues, see a physician.If toner gets in your mouth, rinse immediately with plenty of water. If swallowed, induce vomiting and consult a physician.Do not throw used toner cartridges or toner into the flames. Do not use vacuum cleaner for home use to clean up spills of powdered toners. The very fine particles can cause fire/explosion. Sweep them thoroughly with a broom or wipe them with a cloth moistened with neutral detergent. If a large amount of toner is spilled, use a toner vacuum designed specifically to clean toner.Ozone gas is generated by the printer as a by-product of the printing process. The amount of gas is too small to be harmful, however, some users may feel uncomfortable under the following conditions. It is desirable to advice the users to ventilate the room when using the printer.„ When using the printer for a long period of time in a room with poor ventilation. „ When printing a large amount of documents at a time. „ When using multiple printers in the same room. In order to protect sensitive microprocessors and circuitry, use static discharge equipment, such as anti-static wrist straps, when accessing internal components.Do not use thinner or alcohol when cleaning the product as it may result in discoloration or deformation.
This manual is revised when the system, component, or part of the product is modified as a result of continuing improvements to the product’s performance and functions. See the table below for recent updates. Revision HistoryRevision Date of Issue Description A January 16, 2008 First Release B February 1, 2008 All chapters:„ Some connector numbers described in all chapters were corrected. Chapter 3:„ Service request errors were changed. Chapter 4:„ An adjustment point was added in the Developing Unit removal procedure. „ “ Disassembly Flowchart” (p.76) was changed. „ “ Disassembly Flowchart” (p.120) was changed. „ PF Paper Conveyance Clutch figure was changed. Chapter 5:„ Firmware update was added in “5.1 Adjustment Item” (p.141) . „ “5.2.2 Updating firmware” (p.145) was added. Chapter 7:„ Some explanations in “7.3.1 Status Sheet” (p.166) were corrected.
Contents Chapter 1PRODUCT DESCRIPTION1.1 Product Specifications . ......................................................................................... 4 1.1.1 Basic Specifications. .................................................................................. 4 1.1.2 Paper Specifications . ................................................................................. 8 1.1.3 Replacement Parts . .................................................................................. 11 1.1.4 Controller Specifications . ........................................................................ 12 1.2 List of Printer Messages . .................................................................................... 13 Chapter 2OPERATING PRINCIPLES2.1 Electrical parts layout . ........................................................................................ 16 2.2 Technical Explanation of Print Process. ............................................................. 20 2.2.1 Charging . .................................................................................................. 20 2.2.2 Exposure . .................................................................................................. 21 2.2.3 Development. ........................................................................................... 22 2.2.4 Transfer/Separation . ................................................................................ 23 2.2.5 Cleaning . .................................................................................................. 24 2.2.6 Fusing . ...................................................................................................... 25 2.2.7 Paper exit section . .................................................................................... 26 2.2.8 Duplex/conveying section . ...................................................................... 27 2.3 Paper Feed . .......................................................................................................... 28 2.3.1 Cassette paper feed section . ..................................................................... 28 2.3.2 MP tray paper feed section . ..................................................................... 29 2.3.3 Paper conveying section . ......................................................................... 30 2.3.4 Optional cassette paper feed section. ....................................................... 31 Chapter 3TROUBLESHOOTING3.1 Troubleshooting Flowchart . ............................................................................... 33 3.2 Initial Checks . ..................................................................................................... 33 3.3 Symptoms . ........................................................................................................... 34 3.3.1 Errors indicated by the LEDs . ................................................................. 34 3.3.2 Print Quality Problems . ........................................................................... 34 3.3.3 Electrical Problems . ................................................................................. 36 3.3.4 Mechanical Problems . ............................................................................. 36 3.4 Troubleshooting. .................................................................................................. 37 3.4.1 Paper Jam Error . ....................................................................................... 37 3.4.2 LED Indication . ........................................................................................ 40 3.4.3 Controller-related Service Call Errors. .................................................... 47 3.4.4 Image Quality Problems . ......................................................................... 57 3.4.5 Electrical Problems. ................................................................................. 61 3.4.6 Mechanical Problems . ............................................................................. 63 Chapter 4DISASSEMBLY AND ASSEMBLY4.1 Preliminary Check . .............................................................................................. 66 4.1.1 Tool List . .................................................................................................. 66 4.1.2 Parts/Units that Should Not be Disassembled . ........................................ 66 4.1.3 How to Read this Chapter . ..................................................................... 67 4.2 List of Disassembly/Reassembly Parts/Units . .................................................... 69 4.3 Main Unit Disassembly/Reassembly. ................................................................. 70 4.3.1 Group 1 . .................................................................................................... 70 4.3.2 Group 2 . .................................................................................................... 75 4.3.3 Group 3 . .................................................................................................... 82 4.3.4 Group 4 . .................................................................................................... 87 4.3.5 Group 5 . .................................................................................................... 92 4.3.6 Group 6 . .................................................................................................... 98 4.3.7 Group 7 . .................................................................................................. 106 4.3.8 Group 8 . .................................................................................................. 113 4.3.9 Group 9 . .................................................................................................. 119 4.3.10 Group 10 . .............................................................................................. 126 4.3.11 Group 11 . .............................................................................................. 131 4.3.12 Group 12 . .............................................................................................. 136 Chapter 5ADJUSTMENT5.1 Adjustment Item . ............................................................................................... 141 5.2 Adjustment . ....................................................................................................... 142 5.2.1 Writing USB ID. .................................................................................... 142 5.2.2 Updating firmware . ............................................................................... 145