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magicolor 2300 Series
Service Manual
1750058-001C
Trademarks
The following are registered trademarks of MINOLTA-QMS, Inc.: QMS and the MINOLTA-QMS logo. Minolta, and PagePro are trademarks of Minolta Co., Ltd. Other product names mentioned in this guide may also be trademarks or registered trademarks of their respective owners.
Proprietary Statement
The digitally encoded software included with your printer is Copyrighted © 2002 by MINOLTA-QMS, Inc. All Rights Reserved. This software may not be reproduced, modified, displayed, transferred, or copied in any form or in any manner or on any media, in whole or in part, without the express written permission of MINOLTA-QMS, Inc.
Copyright Notice
This manual is Copyrighted © 2002 by MINOLTA-QMS, Inc., One Magnum Pass, Mobile, AL 36618. All Rights Reserved. This document may not be copied, in whole or part, nor transferred to any other media or language, without written permission of MINOLTA-QMS, Inc.
Manual Notice
MINOLTA-QMS, Inc. reserves the right to make changes to this manual and to the equipment described herein without notice. Considerable effort has been made to ensure that this manual is free of inaccuracies and omissions. However, MINOLTA-QMS, Inc. makes no warranty of any kind including, but not limited to, any implied warranties of merchantability and fitness for a particular purpose with regard to this manual. MINOLTA-QMS, Inc. assumes no responsibility for, or liability for, errors contained in this manual or for incidental, special, or consequential damages arising out of the furnishing of this manual, or the use of this manual in operating the equipment, or in connection with the performance of the equipment when so operated.
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CONTENTS
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CONTENTS .................................................................3 SAFETY .......................................................................9
Safety Precautions for Inspection and Service .................................................. 11 Warning ....................................................................................................... 11 Caution ........................................................................................................ 13 Used Batteries Precautions ......................................................................... 15 Other Precautions ........................................................................................ 16 Precautions for Service ................................................................................ 16 Safety information ........................................................................................ 19 Laser Safety Label ....................................................................................... 22 Laser Caution Label ..................................................................................... 22 PRECAUTIONS FOR HANDLING THE LASER EQUIPMENT ................... 23
GENERAL ..................................................................25
Product Specifications ........................................................................................ 27 Installation Precautions ...................................................................................... 31 Installation environment ............................................................................... 31 Installation power supply ............................................................................. 31 Space requirements...................................................................................... 32 Operation Precautions ....................................................................................... 33 Ensuring the optimum performance of this unit ........................................... 33 Operating environment ................................................................................ 33 Power supply requirements ......................................................................... 33 Other precautions ........................................................................................ 33 Parts Identification ....................................................................................... 34
MECHANICAL/ ELECTRICAL ...................................35
CROSS-SECTIONAL VIEW ............................................................................... 37 ELECTRICAL COMPONENTS LAYOUT ........................................................... 38 OPERATING SEQUENCE ................................................................................. 43 IMAGE STABILIZATION CONTROL ................................................................. 44 AIDC Detection ............................................................................................ 44 Outline of AIDC Control ............................................................................... 45 Operation Timing ......................................................................................... 46 Temperature/Humidity Sensor ..................................................................... 47 ATVC (Auto Transfer Voltage Control ......................................................... 48 DRUM CARTRIDGE .......................................................................................... 49 PC Drum ...................................................................................................... 49 PC Drum Charging ...................................................................................... 50 LASER EXPOSURE .......................................................................................... 51 DEVELOPING UNIT .......................................................................................... 53 Developing Position ..................................................................................... 55 Toner Cartridge ............................................................................................ 56 IMAGE TRANSFER ........................................................................................... 60 Image Transfer Belt Unit .............................................................................. 60 Second Image Transfer Roller Cleaning ...................................................... 63 Image Transfer Belt Cleaning Mechanism................................................... 64 Waste Toner Bottle ...................................................................................... 66
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Waste Toner Bottle Detection ..................................................................... 66 FUSING SECTION ............................................................................................ 67 Fusing Unit .................................................................................................. 67 Fusing Temperature Control ....................................................................... 69 PAPER TAKE-UP SECTION ............................................................................. 71 Manual Feed Tray ....................................................................................... 71 Lower Feeder Unit (Option) ......................................................................... 72 OTHER MECHANISMS ..................................................................................... 73 Duplex Unit (Option) .................................................................................... 73
MAINTENANCE & DISASSEMBLY/ASSEMBLY .......81
Disassembly/Assembly Precautions .................................................................. 83 Precautions for disassembly and assembly ................................................ 83 Parts that must not be touched ................................................................... 83 Precautions for transporting or storing PWBs ............................................. 83 Precautions for replacing PWBs .................................................................. 83 Precautions for inspecting PWBs ................................................................ 83 Precautions for transporting or storing the OPC drum cartridge ................. 84 Precautions for handling the OPC drum cartridge ....................................... 84 Red painted Screws .................................................................................... 84 Variable Resistors on Board ........................................................................ 84 Maintenance Schedule ...................................................................................... 85 Guideline for Life Specifications Values by Unit........................................... 87 Detail of Each Unit Life ................................................................................ 87 Maintenance And Cleaning ............................................................................... 89 Replacement of the Units .................................................................................. 93 Disassembly Procedures ............................................................................. 96 Pre-disassembly preparation ....................................................................... 98 Removal Of Circuit Boards And Other Electrical Components ................. 100 Removal of Units ....................................................................................... 106 DISASSEMBLY OF THE ENGINE PARTS ............................................... 111
CONTROL PANEL / SERVICE MODE DESCRIPT. 127
Control Panel Descriptions--2300DL & 2350 ................................................. 129 Names of control panel parts and their functions ...................................... 129 Message Window ...................................................................................... 129 Menu Contents for magicolor 2300 DL ............................................................ 133 Print menu overview .................................................................................. 133 Settings menus .......................................................................................... 134 Service Mode ............................................................................................ 136 Service mode displays .............................................................................. 136 Entering service mode .............................................................................. 136 Service mode options ................................................................................ 136 Menu Contents for magicolor 2350 ................................................................. 138 Menu Overview ......................................................................................... 138 About the 2300W Control Panel ...................................................................... 140 Control Panel Key ..................................................................................... 140 Indicator Lights .......................................................................................... 141 Working with the 2300W Status Display ................................................... 142
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Using the Status Display ............................................................................ 143 Status, Error and Service Messages ......................................................... 144
TROUBLESHOOTING .............................................147
Introduction ...................................................................................................... 149 Checking the electrical components .......................................................... 149 Paper Misfeeds ................................................................................................ 152 Perform initial check procedures ............................................................... 152 Paper misfeed displays .............................................................................. 153 Wiring diagram of misfeed-detecting sensors ............................................ 154 Misfeed detection timing and remedies ..................................................... 155 Malfunctions and Warnings (2300 DL & 2350) ................................................ 159 Malfunction detection timing and remedies ............................................... 161 Power supply malfunctions ........................................................................ 167 Image Quality Troubleshooting ........................................................................ 168
INDEX ......................................................................171
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8
SAFETY
9
1.
SAFETY PRECAUTIONS FOR INSPECTION AND SERVICE
· When performing inspection and service procedures, observe the following precautions to prevent accidents and ensure utmost safety. Depending on the model, some of the precautions listed below do not apply. · Different markings are used to denote specific meanings as detailed below.
WARNING
· Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices.
CAUTION
· Indicates a potentially hazardous situation whech, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsave practices. · The following graphic symbols are used to give instructions that need to be observed. Used to call the service technician attention to what is graphically represented inside the marking (including a warning). Used to prohibit the service technician from doing what is graphically represented inside the marking. Used to instruct the service technician to do what is graphically represented inside the marking.
1-1.
Warning
WARNING
1. Always observe precautions. · Parts requiring special attention in this product include a label containing the mark shown on the left plus precautionary notes. Be sure to observe the precautions. · Be sure to observe the "Safety Information" given in the user documentation. 2. Before starting the procedures, be sure to unplug the power cord.
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· This product contains a high-voltage unit and a circuit with a large current capacity that may cause an electric shock or burn. · The product also contains parts that can jerk suddenly and cause injury. · If this product uses a laser, laser beam leakage may cause eye damage or blindness.
WARNING
3. Do not throw toner or the toner bottle into a fire. · Do not throw toner or the Toner Bottle (Imaging Cartridge, Toner Cartridge) into a fire. Toner expelled from the fire may cause burns. 4. Use the specified parts. · For replacement parts, always use the genuine parts specified in the manufacturer's parts manual. Installing a wrong or unauthorized part could cause dielectric breakdown, overload, or undermine safety devices resulting in possible electric shock or fire. · Replace a blown electrical fuse or thermal fuse with its corresponding genuine part specified in the manufacturer's parts manual. Installing a fuse of a different make or rating could lead to a possible fire. If a thermal fuse blows frequently, the temperature control system may have a problem and action must be taken to eliminate the cause of the problem. 5. Handle the power cord with care and never use a multiple outlet. · Do not break, crush or otherwise damage the power cord. Placing a heavy object on the power cord, or pulling or bending it may damage it, resulting in a possible fire or electric shock. · Do not use a multiple outlet to which any other appliance or machine is connected. · Be sure the power outlet meets or exceeds the specified capacity. 6. Be careful with the high-voltage parts. · A part marked with the symbol shown on the left carries a high voltage. Touching it could result in an electric shock or burn. Be sure to unplug the power cord before servicing this part or the parts near it. 7. Do not work with wet hands. · Do not unplug or plug in the power cord, or perform any kind of service or inspection with wet hands. Doing so could result in an electric shock. 8. Do not touch a high-temperature part. · A part marked with the symbol shown on the left and other parts such as the exposure lamp and fusing roller can be very hot while the machine is energized. Touching them may result in a burn. · Wait until these parts have cooled down before replacing them or any surrounding parts.
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WARNING
9. Maintain a Grounded Connection at all times. · Connect the power cord to an electrical outlet that is equipped with a grounding terminal. 10. Do not remodel the product. · Modifying this product in a manner not authorized by the manufacturer may result in a fire or electric shock. If this product uses a laser, laser beam leakage may cause eye damage or blindness. 11. Restore all parts and harnesses to their original positions. · To promote safety and prevent product damage, make sure the harnesses are returned to their original positions and properly secured in their clamps and saddles in order to avoid hot parts, high-voltage parts, sharp edges, or being crushed. · To promote safety, make sure that all tubing and other insulating materials are returned to their original positions. Make sure that floating components mounted on the circuit boards are at their correct distance and position off the boards.
1-2.
Caution
CAUTION
1. Precautions for Service Jobs. · A star washer and spring washer, if used originally, must be reinstalled. Omitting them may result in contact failure which could cause an electric shock or fire. · When reassembling parts, make sure that the correct screws (size, type) are used in the correct places. Using the wrong screw could lead to stripped threads, poorly secured parts, poor insulating or grounding, and result in a malfunction, electric shock or injury. · Take great care to avoid personal injury from possible burrs and sharp edges on the parts, frames and chassis of the product. · When moving the product or removing an option, use care not to injure your back or allow your hands to be caught in mechanisms.
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CAUTION
2. Precautions for Servicing with Covers and Parts Removed. · Wherever feasible, keep all parts and covers mounted when energizing the product. · If energizing the product with a cover removed is absolutely unavoidable, do not touch any exposed live parts and use care not to allow your clothing to be caught in the moving parts. Never leave a product in this condition unattended. · Never place disassembled parts or a container of liquid on the product. Parts falling into, or the liquid spilling inside, the mechanism could result in an electric shock or fire. · Never use a flammable spray near the product. This could result in a fire. · Make sure the power cord is unplugged before removing or installing circuit boards or plugging in or unplugging connectors. · Always use the interlock switch actuating jig to actuate an interlock switch when a cover is opened or removed. The use of folded paper or some other object may damage the interlock switch mechanism, possibly resulting in an electric shock, injury or blindness. 3. Precautions for the Working Environment. · The product must be placed on a flat, level surface that is stable and secure. · Never place this product or its parts on an unsteady or tilting workbench when servicing. · Provide good ventilation at regular intervals if a service job must be done in a confined space for a long period of time. · Avoid dusty locations and places exposed to oil or steam. · Avoid working positions that may block the ventilation ports of the product. 4. Precautions for Handling Batteries. (Lithium, Nickel-Cadmium, etc.) · Replace a rundown battery with the same type as specified in the manufacturer's parts manual. · Before installing a new battery, make sure of the correct polarity of the installation or the battery could burst. · Dispose of used batteries according to the local regulations. Never dispose of them at the user's premises or attempt to try to discharge one. 5. Precautions for the Laser Beam. (Only for Products Employing a Laser) · Removing the cover marked with the caution label could lead to possible exposure to the laser beam, resulting in eye damage or blindness. Be sure to unplug the power cord before removing this cover. · If removing this cover while the power is ON is unavoidable, be sure to wear protective laser goggles that meet specifications. · Make sure that no one enters the room when the machine is in this condition. · When handling the laser unit, observe the "Precautions for Handling Laser Equipment." 6. Precautions for storing the toner or imaging cartridge. · Be sure to keep the toner or imaging cartridge out of the reach of children. Licking the imaging cartridge or ingesting its contents is harmful to your health.
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1-3.
Used Batteries Precautions
ALL Areas CAUTION Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer's instructions. Germany VORSICHT! Explosionsgefahr bei unsachgemäßem Austausch der Batterie. Ersatz nur durch denselben oder einen vom Hersteller empfohlenen gleichwertigen Typ. Entsorgung gebrauchter Batterien nach Angaben des Herstellers. France ATTENTION Il y a danger d'explosion s'il y a remplacement incorrect de la batterie. Remplacer uniquement avec une batterie du même type ou d'un type équivalent recommandé par le constructeur. Mettre au rebut les batteries usagées conformément aux instructions du fabricant. Denmark ADVARSEL! Lithiumbatteri - Eksplosionsfare ved fejlagtig håndtering. Udskiftning må kun ske med batteri af samme fabrikat og type. Levér det brugte batteri tilbage til leverandøren. Finland, Sweden VAROlTUS Paristo voi räjähtää, jos se on virheellisesti asennettu. Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin. Hävitä käytetty paristo valmistajan ohjeiden mukaisesti. VARNING Explosionsfara vid felaktigt batteribyte. Använd samma batterityp eller en ekvivalent typ som rekommenderas av apparattillverkaren. Kassera använt batteri enligt fabrikantens instruktion. Norway ADVARSEL Eksplosjonsfare ved feilaktig skifte av batteri. Benytt samme batteritype eller en tilsvarende type anbefalt av apparatfabrikanten. Brukte batterier kasseres i henhold til fabrikantens instruksjoner.
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1-4.
Other Precautions
· When handling circuit boards, observe the "HANDLING of PWBs". · The PC Drum is a very delicate component. Observe the precautions given in "HANDLING OF THE PC DRUM" because mishandling may result in serious image problems. · Note that replacement of a circuit board may call for readjustments or resetting of particular items, or software installation.
1-5.
Precautions for Service
· When performing inspection and service procedures, observe the following precautions to prevent mishandling of the machine and its parts. Depending on the model, some of the precautions given in the following do not apply. 1. Precautions Before Service · When the user is using a word processor or personal computer from a wall outlet of the same line, take necessary steps to prevent the circuit breaker from opening due to overloads. · Never disturb the LAN by breaking or making a network connection, altering termination, installing or removing networking hardware or software, or shutting down networked devices without the knowledge and express permission of the network administrator or the shop supervisor. 2. How to Use this Book DIS/REASSEMBLY, ADJUSTMENT · To reassemble the product, reverse the order of disassembly unless otherwise specified. TROUBLESHOOTING · If a component on a PWB or any other functional unit including a motor is defective, the text only instructs you to replace the whole PWB or functional unit and does not give troubleshooting procedures applicable within the defective unit. · All troubleshooting procedures contained herein assume that there are no breaks in the harnesses and cords and all connectors are plugged into the right positions. · The procedures preclude possible malfunctions due to noise and other external causes. 3. Precautions for Service · Keep all disassembled parts in good order and keep tools under control so that none will be lost or damaged. · After completing a service job, perform a safety check. Make sure that all parts, wiring and screws are returned to their original positions. · Do not pull out the toner hopper while the toner bottle is turning. This could result in a damaged motor or locking mechanism. · If the product is to be run with the front door open, make sure that the toner hopper is in the locked position. · Do not use an air gun or vacuum cleaner for cleaning the ATDC Sensor and other sensors, as they can cause electrostatic damage. Use a blower brush and cloth. If a unit containing these sensors is to be cleaned, first remove the sensors from the unit.
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4. Precautions for Dis/Reassembly · Be sure to unplug the printer from the outlet before attempting to service the printer. · The basic rule is not to operate the printer anytime during disassembly. If it is absolutely necessary to run the printer with its covers removed, use care not to allow your clothing to be caught in revolving parts such as the timing belt and gears. · Before attempting to replace parts and unplug connectors, make sure that the power cord of the printer has been unplugged from the wall outlet. · Be sure to use the Interlock Switch Actuating Jig whenever it is necessary to actuate the Interlock Switch with the covers left open or removed. · While the product is energized, do not unplug or plug connectors into the circuit boards or harnesses. · Never use flammable sprays near the printer. · A used battery should be disposed of according to the local regulations and never be discarded casually or left unattended at the user's premises. · When reassembling parts, make sure that the correct screws (size, type) and toothed washer are used in the correct places. 5. Precautions for Circuit Inspection · Never create a closed circuit across connector pins except those specified in the text and on the printed circuit. · When creating a closed circuit and measuring a voltage across connector pins specified in the text, be sure to use the GND wire. 6. Handling of PWBs During Transportation/Storage · During transportation or when in storage, new P.W. Boards must not be indiscriminately removed from their protective conductive bags. · Do not store or place P.W. Boards in a location exposed to direct sunlight and high temperature. · When it becomes absolutely necessary to remove a Board from its conductive bag or case, always place it on its conductive mat in an area as free as possible from static electricity. · Do not touch the pins of the ICs with your bare hands. · Protect the PWBs from any external force so that they are not bent or damaged. During Inspection/Replacement · Avoid checking the IC directly with a multimeter; use connectors on the Board. · Never create a closed circuit across IC pins with a metal tool. · Before unplugging connectors from the P.W. Boards, make sure that the power cord has been unplugged from the outlet. · When removing a Board from its conductive bag or conductive case, do not touch the pins of the ICs or the printed pattern. Place it in position by holding only the edges of the Board. · When touching the PWB, wear a wrist strap and connect its cord to a securely grounded place whenever possible. If you cannot wear a wrist strap, touch a metal part to discharge static electricity before touching the PWB. · Note that replacement of a PWB may call for readjustments or resetting of particular items. 7. Handling of Other Parts · The magnet roller generates a strong magnetic field. Do not bring it near a watch, floppy disk, magnetic card, or CRT.
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8. Handling of the Imaging Cartridge During Transportation/Storage · The storage temperature is in the range between 20 °C and +40 °C. · In summer, avoid leaving the Imaging Cartridge in a car for a long time. Handling · Store the Imaging Cartridge in a place that is not exposed to direct sunlight. Precautionary Information on the PC Drum Inside the Imaging Cartridge · Use care not to contaminate the surface of the PC Drum with oil-base solvent, fingerprints, and other foreign matter. · Do not scratch the surface of the PC Drum. · Do not attempt to wipe clean the surface of the PC Drum.
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1-6.
(1)
Safety information
Laser Safety
· This is a digital machine certified as a class 1 laser product. There is no possibility of danger from a laser, provided the machine is serviced according to the instruction in this manual. (2) Internal Laser Radiation semiconductor laser Maximum average radiation power(*) Wavelength *:Laser power in surface of the PC Drum · This product employs a Class 3b laser diode that emits an invisible laser beam. The laser diode and the scanning polygon mirror are incorporated in the print head unit. · The print head unit is NOT A FIELD SERVICE ITEM. Therefore, the print head unit should not be opened under any circumstances. 4.68 µW 770-795 nm
Laser Aperture of the Print Head Unit
C4131o001AA
This figure shows the view inside the Top Cover with the Toner Cartridge and the Drum Cartridge removed.
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the U.S.A., Canada (CDRH Regulation) · This machine is certified as a Class I Laser product under Radiation Performance Standard according to the Food, Drug and Cosmetic Act of 1990. Compliance is mandatory for Laser products marketed in the United States and is reported to the Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug Administration of the U.S. Department of Health and Human Services (DHHS). This means that the device does not produce hazardous laser radiation. · The label shown to page 13 indicates compliance with the CDRH regulations and must be attached to laser products marketed in the United States.
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CAUTION Use of controls, adjustments or performance of procedures other than those specified in this manual may result in hazardous radiation exposure. semiconductor laser Maximum power of the laser diode Wavelength All Areas CAUTION Use of controls, adjustments or performance of procedures other than those specified in this manual may result in hazardous radiation exposure. semiconductor laser Maximum power of the laser diode Wavelength Denmark ADVARSEL Usynlig laserstråling ved åbning, når sikkerhedsafbrydere er ude af funktion. Undgå udsættelse for stråling. Klasse 1 laser produkt der opfylder IEC60825 sikkerheds kravene. halvlederlaser Laserdiodens højeste styrke bølgelængden 5 mW 770-795 nm 5 mW 770-795 nm 5 mW 770-795 nm
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Finland, Sweden LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT
VAROITUS! Laitteen käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saattaa altistaa käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälle lasersäteilylle. puolijohdelaser Laserdiodin suurin teho aallonpituus 5 mW 770-795 nm
VARNING! Om apparaten används på annat sätt än i denna bruksanvisning specificerats, kan användaren utsättas för osynlig laserstrålning, som överskrider gränsen för laserklass 1. halvledarlaser Den maximala effekten för laserdioden våglängden 5 mW 770-795 nm
VARO! Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättomälle lasersäteilylle. Älä katso säteeseen.
VARNING! Osynlig laserstråining när denna del är öppnad och spärren är urkopplad. Betrakta ej stråien. Norway ADVERSEL Dersom apparatet brukes på annen måte enn spesifisert i denne bruksanvisning, kan brukeren utsettes för unsynlig laserstrålning, som overskrider grensen for laser klass 1. halvleder laser Maksimal effekt till laserdiode bølgelengde 5 mW 770-795 nm
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1-7.
Laser Safety Label
· A laser safety label is attached to the outside of the machine as shown below.
for 120V
for 220 - 240V
for 100V
4131o003AA
1-8.
Laser Caution Label
· A laser caution label is attached to the inside of the machine as shown below.
C4131s005AA
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1-9.
PRECAUTIONS FOR HANDLING THE LASER EQUIPMENT
· When laser protective goggles are to be used, select ones with a lens conforming to the above specifications. · When a disassembly job needs to be performed in the laser beam path, such as when working around the printerhead and PC Drum, be sure first to turn the printer OFF. · If the job requires that the printer be left ON, take off your watch and ring and wear laser protective goggles. · A highly reflective tool can be dangerous if it is brought into the laser beam path. Use utmost care when handling tools on the user's premise.
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24
GENERAL
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1.
(1)
Type
Product Specifications
Printer
Desktop full-color laser beam printer Electrophotographic (two-part imaging cartridge) Laser diode and polygon mirror scanning 600 dpi (dots/inch) A5T, B5T, A4, Letter, Legal Plain paper (16-24 lb bond, 60-90 g/m2), recycled paper, overhead projector transparencies, letterheads, envelopes (Monarch, Com-10, DL, C5, C6, Chokei -3, Chokei -4), label sheets, thick paper (91-163 g/m2), government-standard postcards, postcard sheets, Japanese postcard, and return postcards Black-and-white printing: 14 sec. Color printing: 25 sec. Black-and-white printing: 16 pages/min. (for A4- or Letter-size pages) Color printing: 4 pages/min. (for A4- or Letter-size pages) Within 180 seconds (at a room temperature of 23 °C and at the rated voltage) 101.78 mm/sec. 1-way system (maximum 2-way); Expandable to 2-way system by installing the optional 2nd paper cassette
Printing method Exposure method Print resolution Media sizes
Media types
First-page print time
Multi-page print speed
Warm-up time System speed
Paper feed-in method
Manual feed tray (200 sheets of plain paper) 2nd paper cassette (500 sheets of plain paper) (2300 DL & 2350 only)
Paper feed-out method Drum-charging method Developing method Image transfer method PC drum PC drum cleaning method Paper separation method Fusing method Dimensions Weight Weight (consumables) Rated power supply voltage Frequency Maximum power consumption
Face-down (tray capacity: 200 sheets) Comb electrode scorotron charger Single-element developing system Transport image transfer system OPC (Organic Photoconductor) Blade system Curvature separation + charge-neutralizing system Heated roller fusing system 14.02 in.(356 mm) (W) x 19.69 in.(500 mm) (D) x 15.43 in. (392 mm) (H) 55.1 lbs(25 kg) (without drum cartridge and toner cartridges) 62.4 lbs (28.3 kg) (including drum cartridge and toner cartridges) 100 V / 120V / 220-240 V 50/60 Hz 1100 W or less (100/120 V) 1100 W or less (220-240 V) During stand-by: 39 dB (A) or less During printing: 54 dB (A) or less (color printing) 54 dB (A) or less (black-and-white printing)
Operating noise
27
Operating environment Drum cartridge life Toner cartridge life (purchased separately) Toner cartridge life (enclosed cartridge) Options
50-95° F (10-35°C) 15 - 85% 45,000 pages (black/white ratio=5%) 4,500 pages (black/white ratio=5%) 1,500 pages (black/white ratio=5%) Black: 1,500 pages (black/white ratio=5%) Color: 1,500 pages (color/white ratio for each color=5%) Second paper cassette (2300 DL & 2350 only) Duplex unit
(2)
Second paper cassette (Option)
Second paper cassette (2300 DL & 2350 only) Plain paper (16 to 24 lbs.; 60-90 g/m2), recycled paper (16 to 24 lbs., 60-90 g/m2) A4, Letter 500 sheets Paper separator system Supplied by main unit (DC24 V ±10%) Supplied by main unit 15 in. (380 mm) (W) x 20.1 in. (511 mm) (D) x 6.9 in. (176 mm) (H) (including the height of the right-side door) 11.7 lbs. (5.3 kg)
Name Paper Media sizes Paper cassette capacity Paper separation mechanism Power source Drive source Dimensions Weight
(3)
Duplex unit
Duplex unit Plain paper (16 to 24 lbs.; 60-90 g/m2) A4, Letter Color printing: 2.0 pages/min. (A4- or Letter-size pages) Black-and-white printing: 5.0 pages/min. (A4- or Letter-size pages) A4/Letter: 2 pages (including the paper path of the paper feedout section) Center baseline Supplied by main unit (DC24 V ±10%) Supplied by main unit 3.8 in. (97 mm) (W) x 13.4 in. (340 mm) (D) x 13 in. (330 mm) (H) (including the height of the right-side door) 4.4 lbs. (2.0 kg)
Name Paper Media sizes Print speed (double-sided printing)
Document feeding capacity Paper transfer baseline Power source Drive source Dimensions Weight
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(4)
CPU
Controller magicolor 2300DL (PWB-P)
D8405 200MHz Standard ROM: 4MB Standard RAM: 32MB Ethernet (10/100BASE-TX, RJ-45) IEEE1284 (Compatible/Nibble/ECP/EPP) USB Type B connector TCP/IP DHCP, ARP/ICMP, BOOTP, SLP, IPP, HTTP, SNMP, LPR RAW Port Printing (9100) IPP1.0 (http://Printer IP address/ipp.cgi) LPD (Queue Name: lp, LP, default, DEFAULT) 600 x 600 dpi, 1200 x 600 dpi, 2400 x 600 dpi OS: Windows 95/98/Me, Windows NT4.0, Windows 2000, Windows XP
Memory configuration
Standard I/F
Network protocol
Network print service Resolution Printer Driver
Compatible clients: PC CPU Hard disk free space IBM PC or compatible CPU clock of 300 MHz or more recommended Minimum 36 MB 20 MB: Printer drive/Status display 16 MB: Image processing area At least 16 MB (Windows 95/98/NT4.0) RAM At least 32 MB (Windows Me) At least 64 MB (Windows 2000 Professional) At least 128 MB (Windows XP Home Edition/Professional) Either of the following browsers is required to use PageScope Light. Netscape Navigator Ver. 4.7 or later Internet Explorer ver5.0
Browser
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(5)
CPU
Controller magicolor 2350 (PWB-P)
IBM Mercury, Power PC 405, 200 Mhz processor core SOC, system bus speed of 100 Mhz Boot ROM (512KB); 12MB Flash ROM (supports up to 24MB) 128 MB standard, upgreadeable to 384 MB via 1 DIMM slot Ethernet (10/100BASE-TX, RJ-45) IEEE1284 (Compatible/Nibble/ECP/EPP) USB 1.1
Memory configuration Standard I/F
Optional I/F Optional Hard Disk
Dongle (803.11b & Bluetooth) via parallel IDE Hard Disk Kit (includes daughterboard, hard disk and TOD clock); IDE Hard Disk Kit (without hard disk) for third party hard disks. PostScript 3, PCL 5, XL, PDF v. 1.3 (requires optional hard disk), Line printer 137 PostScript fonts, 90 PCL fonts (80 scalable & 10 bitmap) Upgradable via FLASH at initial release, later upgradeable via Mask ROM. 600 x 600 dpi, 1200 x 600 dpi, 2400 x 600 dpi OS: Windows 95/98/Me, Windows NT4.0, Windows 2000, Windows XP
Resident Emulations Fonts System Software Resolution Printer Driver
(6)
CPU
Controller magicolor 2300W (PWB-P)
N1-chip (Naltec original ASIC) 64 KB (In ASIC) Standard RAM: 32MB IEEE1284 (Compatible/Nibble/ECP) USB Type B connector 600 x 600 dpi, 1200 x 600 dpi OS: Windows 95/98/Me, Windows 2000, Windows XP
Memory configuration Standard I/F Resolution Printer Driver Compatible clients: PC CPU Hard disk free space
IBM PC or compatible CPU clock of 300 MHz or more recommended Minimum 256 MB 128 MB: Printer drive/Status display 128 MB: Image processing area
RAM
At least 16 MB (Windows 95/98) At least 32 MB (Windows Me) At least 64 MB (Windows 2000 Professional) At least 128 MB (Windows XP Home Edition/Professional)
30
2.
2-1.
Installation Precautions
Installation environment
To ensure safety and prevent possible malfunctions, install the unit in a location that meets the following requirements. · A location that is not exposed to extremely high or low temperatures and not exposed to extremely high or low humidity. · A location that is not exposed to extreme changes in temperature or humidity. · A location that is not exposed to direct sunlight. · A location out of the direct airflow of an air conditioner, heater or ventilation opening. · A well-ventilated location that is not extremely dusty. · A stable and level location that is not subjected to undue vibrations. · A location that is not near room heaters or any other heat-generating appliances. · A location away from volatile, combustible material (such as paint thinner or gasoline). · A location that is not exposed to water or other liquids and where a short circuit of the unit is not likely. · A location that does not put people in the direct airflow of exhaust from the unit. · A location where ammonia gases are not generated.
2-2.
Installation power supply
· If other electrical equipment are plugged into the same electrical outlet, make sure that the current capacity is not exceeded. · Use a power source with as little voltage fluctuations as possible. · Only use an outlet expander or a table tap; never use extension cords. · Be careful that the unit does not pinch or is not placed on top of power or transmission cords of other electrical equipment. · Periodically check that the following conditions are met: The power supply plug does not feel unusually warm. The power supply cord is free of cracks and scratches. The power supply plug is securely inserted into the electrical outlet. Pressure is not applied to the power supply cord.
31
2-3.
·
Space requirements
15.4 in. (390 mm)
23.2 in (590 mm)
13.4 in. (340 mm) 27.8 in. (705 mm)
4131o103AA
5.9 in. (150 mm)
19.7 in. (500 mm)
11.8 in. (300 mm)
27.6 in. (700 mm)
C4131o105AA
32
3.
3-1.
· · · · · · · · · · · · ·
Operation Precautions
Ensuring the optimum performance of this unit
Never place heavy objects on the unit or subject it to shocks. Make sure that the power supply plug is securely inserted into the electrical outlet. Never remove secured panels or open doors of the unit while it is printing. Never turn off the unit while it is printing. Always provide good ventilation when using the unit for a long period of time within a confined area. Never use combustible sprays near the unit. If the unit becomes unusually warm or generates an unusual noise, immediately turn it off, and then unplug the power supply cord. Never turn on the unit at the same time that the power supply cord is being plugged in. When unplugging the power supply cord, always grasp the plug, not the cord. Never bring magnetized objects near the unit. Never place vases or other containers filled with liquid on the unit. Be sure to turn off the unit if it is not to be used for a long period of time or if a power outage occurs. Never allow metal objects such as paper clips or staples to fall into the unit or any of its openings.
3-2.
Operating environment
In order to ensure proper operation of the unit, make sure that the operating environment meets the following conditions: · Temperature: 50-95° F (10-35 °C) · Humidity: 15-85% Rh · Temperature fluctuation: ±18° F (10 °C) per hour · Humidity fluctuation: ±20% Rh per hour
3-3.
Power supply requirements
In order to ensure proper operation of the unit, make sure that the power supply meets the following conditions: · Voltage fluctuation ±10% of the specified voltage · Frequency fluctuation ±3 Hz% · In order to reduce the risk of electric shock in the event of a short circuit, the ground wire must be connected. · Attach the ground wire to the ground terminal of the electrical outlet or to a ground connection that complies with local electrical standards. · Never connect the ground wire to a gas pipe, a telephone ground connection, a lightning rod or a water pipe, otherwise a fire or electric shock may occur.
3-4.
Other precautions
When servicing a machine equipped with a laser beam, observe the following precautions: · When servicing parts in the path of the laser beam (near the print head or PC drum), be sure to first unplug the power supply cord of the unit. · When you are required to service the unit with the power supply cord plugged in, be sure to strictly observe the following precautions: 1. Before performing any service procedures, be sure to remove any reflective accessories such as watches and rings, and wear laser protective goggles. 2. Be sure that nobody is nearby while you perform the service operations. 3. Do not bring highly reflective tools into the path of the laser beam.
33
3-5.
Parts Identification
3
4131o001AA
4 2
4131o106AA
1 5
4131g002AA
4131g003AA
6 7
8
4131g004AA 4131o107AA
1. 2. 3. 4. 5. 6. 7. 8.
Manual feed tray Power switch Image transfer belt unit Waste toner bottle Drum cartridge Toner cartridge Right-side door release lever Duplex unit (optional)
34
MECHANICAL/ ELECTRICAL
35
1.
CROSS-SECTIONAL VIEW
3 4 5 2 6
7 1
C M
K Y
8
9
10
4131M001AA
1. 2. 3. 4. 5. 6.
Toner Cartridge Rack PC Drum Image Transfer Belt Unit Exit Roller Fusing Roller Second Image Transfer Roller 7. Synchronizing Roller
8. Transport Roller 9. Paper Take-Up Roller 10. Second Paper Take-Up Roller
Paper Path The printer has a Multi-Purpose Tray (MPT) capable of holding up to 200 sheets of paper. Paper feeding becomes a two-way system by mounting an optional feeder unit. · The paper pulled by the Paper Take-Up Roll is transported by the Transport Roller, Synchronizing Roller, Second Image Transfer Roller, Fusing Roller, and the Exit Roller and fed out of the printer.
37
2.
(1)
ELECTRICAL COMPONENTS LAYOUT
Printer
36 35 33 31 30 29 28 27 26 32 34
37 38 1
2
3
4
5 6
7 8 9 10 11 12
25 24 23 13 21 20 14 19 18 17 16 15
4131D002AA
22
38
1. Fusing Roller Heater Lamp (H1) 2. Fusing Pressure Roller Heater Lamp (H2) 3. Thermistor (TH1) 4. Thermostat (TS1) 5. Second Image Transfer Roller Pressure Contact Solenoid (SL5) 6. Fusing Cooling Fan Motor (M5) 7. Synchronizing Roller Solenoid (SL3) 8. Fusing Paper Loop Detecting Sensor (PC11) 9. Transport Roller Solenoid (SL2) 10. Right Door Switch (S3) 11. Paper Transport Sensor (PC12) 12. Waste Toner Bottle Set Switch (S5) 13. Second Image Transfer Roller Pressure Positioning Sensor (PC7) 14. Waste Toner Full Detecting Sensor (PC6) 15. OHP Detecting Sensor (PC3A) 16. Synchronizing Roller Sensor (PC2) 17. Laser Safety Switch (S4) 18. Front Door Switch (S2) 19. Manual Feed Paper Empty Sensor (PC1) 20. Manual Feed Paper Take-Up Solenoid (SL1) 21. Temperature/Humidity Sensor (HS1) 22. Power Unit (PU) 23. Power Switch (S1) 24. Toner Cartridge Detecting Sensor (PC8) 25. High Voltage Unit (HV) 26. Rack Home Position Sensor (PC4) 27. Belt Cleaner Separation Solenoid (SL4) 28. Rack Clutch (CL1)
29. Belt Cleaner Positioning Sensor (PC9) 30. Rack Motor (M2) 31. AIDC Sensor (AIDC) 32. Main Motor (M1) 33. Master Board (PWB-A) 34. Power Supply Cooling Fan Motor (M4) 35. Ventilation Fan Motor (M6) 36. Fusing Paper Loop Solenoid (SL6) 37. Print Head Unit (PH) 38. Exit Sensor (PC10)
39
(2)
2300DL Controller
4131M039AA
Symbol U18 U26, U27, U28, U29 CON4 CN1 U3 CN3 U12 CN5 U21 U6 U5 CON1 CN2 CPU
Item
Explanation Destiny D8405 200 MHz controller control CPU 8-MB memory chip, a total of 32 MB standard memory 68-pin SD-RAM add-on memory (128, 256 MB, PC100/ 133 CL3) 10/100Base-T Ethernet RJ45 connector Ethernet Controller USB connector USB Controller IEEE1284 Parallel Connector Parallel buffer System data storage ROM (4 MB) JBIG compressed image processing Controller Panel expansion connector Engine Controller connector 1. Not Used (Always OFF) Not Used (Always OFF) ON: A4, OFF: Letter ON: A4, OFF: Letter 2. 3. 4.
SDRAM Expansion slot Connector IC Connector IC Connector IC IC ASIC Connector Connector
SW1
Dip SW
CR7 CR10 CN6
LED LED Connector
For 5 V voltage check For 3.3 V voltage check Video signal connector
40
(3)
2350 Controller
U4
U17 J6
TP2 J1
U15 U9
J12 J13
J2 U13 J4 J7
J16 JP10
J15 J17 U3 U6 U10 U12 U16 U19 U24 U30
Symbol U13 U3, U6, U10, U12, U16, U19, U24, U30 J7 J15 J16 J17 JP10 J2 J1 TP2 J12 J13 U9 U15 U17 J6 J4 U4 CPU
Item
Explanation 200 MHz Power PC 405 CPU A total of 128 MB standard memory 68-pin SD-RAM add-on memory (128, 256 MB, PC100/ 133 CL3) 10/100Base-T Ethernet RJ45 connector IEEE1284 Parallel Connector USB connector DIAG test point DEBUG test point Engine I/F 5V PCI Daughterboard Card Bus PCI IDE Hard Drive Card Bus FPGA1 FPGA PROM DSFL PROM Controller Panel connector Printhead Video signal connector Empty PROM Socket
SDRAM
Expansion slot Connector Connector Connector Jumper Jumper Connector Test Point Connector Connector IC IC IC Connector Connector Socket
41
(4)
2300W Controller
Controller Panel Interface Connector Demonstration ROM Board Connector
Controller ASIC
Image memory
Image memory
4131M554AA
Engine Controller connector
Parallel/USB Interface Connector
42
3.
1 2
Print Request
3 1
4
5
Polygon Motor (M3)
Image Transfer Belt Positioning Sensor (PC5)
FD Scanning Signal (/TOD)
Main Motor (M1)
Rack Motor (M2)
PC Drum Charge Output
Exposure Output
Synchronizing Roller Sensor (PC2)
Conditions: A4 plain paper, full-color printing
OPERATING SEQUENCE
43
Retraction Pressure Retraction Pressure Retraction
Synchronizing Roller Solenoid (SL3)
6
Transport Roller Solenoid (SL2)
First Image Transfer Output
Second Image Transfer Output Pressure
Second Image Transfer Roller Pressure Contact Solenoid (SL5)
Belt Cleaner Separator Solenoid (SL4)
4131M043AA
Manual Feed Paper Take-Up Solenoid (SL1)
1. Outside image area illumination 2. Y development 3. M development
4. C development 5. Bk development 6. Paper trailing edge voltage
4.
IMAGE STABILIZATION CONTROL
· The printer provides the image stabilization control as detailed below to ensure stabilized print image.
Purpose Control AIDC control Control (Sensor) AIDC Sensor (AIDC detection) Temperature/Humidity Sensor
· To stabilize image density · To stabilize gradation · To stabilize image transfer
Image transfer output control
4-1.
AIDC Detection
· The amount of toner sticking to the Image Transfer Belt is measured and color reproducibility is stabilized.
Amount of Toner Sticking Large Small Intensity of Light Reflected Low High Output Small Great
1. A light-emitting diode is used to emit infrared rays that illuminate the toner pattern on the Image Transfer Belt. 2. The photo receiver detects the intensity of the infrared light reflected off the toner pattern on the Image Transfer Belt. 3. A voltage corresponding to the intensity of the reflected light is output to the Master Board (PWB-A).
AIDC Sensor
4004M532AA
44
4-2.
Outline of AIDC Control
· The following AIDC controls are provided to ensure image stabilization.
Control Description
· Ds correction control · LED intensity adjustment control
· Sets the developing bias. · Adjusts the intensity of the LED light.
· Belt surface (on which no · Used for corrections for the laser intensity and cortoner sticks) reflection factor rection control. measurement control · Solid image toner amount control · Laser intensity adjustment control · correction control (1) Ds correction control · Maintains a given amount of toner sticking to the surface of the PC Drum. · Ensures constant reproduction of black and white lines. · Adjusts the intensity of the laser light to ensure a constant amount of toner consumed. · Makes a gradation correction by means of the controller
· Sets a developing bias optimum to prevent foggy print or uneven density. (2) LED intensity adjustment control · Adjusts the intensity of the LED light of the AIDC sensor to ensure a constant output value on the surface of the Image Transfer Belt (no toner area). This controls variations in characteristics of the belt caused by change with time or contamination of the sensor. (3) Belt surface (no toner area) reflection factor measurement control · Measures variations in the reflection factor caused by change with time of the Image Transfer Belt for use for corrections in the laser intensity control and correction control. (4) Solid image toner amount control · Adjusts the pulse width ratio of the developing bias to keep constant the amount of toner sticking to the surface of the PC Drum for a 100% solid image. (5) Laser intensity adjustment control · Adjusts the intensity of the laser light to ensure constant reproduction of black and white lines and constant toner consumption characteristics with changes in characteristics of PC Drum, developing, and drum charging and in durability. (6) correction control · Makes a gradation correction by producing a pattern on the Image Transfer Belt, measuring the image density of the pattern with the AIDC Sensor, and sending the measurement results to the controller.
45
4-3.
Operation Timing
· A specific function of image stabilization control is carried out as required according to the situation.
Operating Timing Processing
· When a new Image Transfer Belt is detected · When a new Drum Cartridge or Toner Cartridge is detected · When the environment changes · When 1,000 printed pages have been produced*1 · When 200 printed pages have been produced*2 · When the processing is commanded from the Control Panel
A
· Ds correction control -> LED intensity adjustment control -> Belt surface reflection factor measurement control -> Solid image toner amount control -> Laser intensity adjustment control -> correction control · Solid image toner amount control -> Laser intensity adjustment control -> correction control ·
B
C
correction control
1: When 1,000 printed pages have been produced after A has been performed last. 2: When 200 printed pages have been produced after A and B have been performed last.
46
4-4.
Temperature/Humidity Sensor
· The bias voltage is determined based on the value calculated through ATVC (Auto Transfer Voltage Control) and by the Temperature/Humidity Sensor (environment).
Temperature/Humidity Sensor (HS1)
4131M038AA
Temperature Data
ATVC Control
Humidity Data
Master Board (PWB-A)
4131m029AA
High Voltage Unit (HV)
Second Image Transfer Bias
47
4-5.
ATVC (Auto Transfer Voltage Control
· Adjusts the transfer bias voltage based on the age and cleanliness of the transfer rollers. ATVC Control Image Transfer Belt is cleaned
Fixed current is output to first transfer roller
Resistance of first transfer roller is measured
First transfer voltage is determined
Second transfer roller is cleaned
Fixed current is output to second transfer roller Resistance of second transfer roller is measured
Second transfer voltage is determined High Voltage Unit Fixed Voltage Output Fixed Current Measured Resistance Fixed Current
Second Transfer Roller
First Transfer Roller
Transfer Belt
Transfer Belt
Drive Roller
PC Drum Ground
48
5.
5-1.
DRUM CARTRIDGE
PC Drum
· The photoconductive drum used in this printer is the organic photo conductor (OPC) type. This is the PC Drum consisting of the Charge Generating Layer and the Charge Transport Layer applied to an aluminum alloy base. Handling Precaution The PC Drum exhibits light fatigue after being exposed to light for a long time, which results in its sensitivity being changed. Always wrap the drum in the PC Drum Cloth or a soft cloth immediately after it has been removed from the printer. Use utmost care to protect the surface of the PC Drum from contamination. Charge Transport Layer Charge Generating Layer Aluminum
1167M007AA 1139M007AA
· Grounding of the PC Drum The PC Drum ground point is located inside, and in the rear of, the PC Drum. It is in constant contact with the Drum Holding Shaft. When the Drum Cartridge is installed in the printer, the Drum Holding Shaft contacts the ground plate in the printer. This provides for assured grounding of the PC Drum through the ground point, Drum Holding Shaft, and ground plate to the frame of the printer. Ground Plate Ground Plate PC Drum
4131M044AA
Drum Holding Shaft
49
5-2.
PC Drum Charging
· The PC Drum Charge Corona employs a comb electrode Scorotron charger system. · It generates corona emission to deposit a charge evenly across the surface of the PC Drum through a grid mesh. · The comb electrode ensures that a charge is concentrated on the grid mesh, thus reducing the amount of ozone produced.
Comb Electrode Charger
PC Drum
Grid Mesh
4131M004AA
Drum Charge Corona Bias
Charge Bias
4131M045AA
50
6.
LASER EXPOSURE
An electrostatic latent image is formed on the surface of the PC Drum by a laser light emitted from the print head.
Polygon Motor (M3)
PC Drum
4131M005AB
(1)
FD Direction (vertical scanning direction)
· The Polygon Motor and Main Motor are energized by the PRINT signal, which starts a paper take-up sequence. · The printing action in the FD direction is started when the Image Transfer Belt Positioning Sensor is activated. (2) CD Direction (horizontal scanning direction)
· The printing action in the CD direction is started by the SOS signal sent from the Laser Control Board.
51
(3)
Print Area
· The figure below shows the print area in the FD and CD direction.
/HSYNC /VIDEO Void Image Width: 4 mm /VIDEO /TOD
CD Direction: 208 mm 80 ms
Void Image Width: 4 mm
4131M046AA
FD Direction: 345 mm
52
7.
(1)
DEVELOPING UNIT
Toner Cartridge Rack
When printing in each of the four different colors of toner, the Toner Cartridge Rack is rotated to bring the Toner Cartridge of the corresponding color of toner (K, Y, M, or C) to the developing position. (2) Drive for the Toner Cartridge Rack · The Toner Cartridge Rack is driven by the Rack Motor (M2) and Rack Clutch. Toner Cartridge Rack Toner Cartridge PC Drum
Direction of Rotation
Developing Roller
4131M047AA
Developing Roller Drive Gears
4131M048AA
53
(3)
Drive for the Developing Roller
· The Developing Roller is driven by the Rack Motor (M2) and the Developing Roller Drive Gears. · When the Toner Cartridge Rack is stopped at the developing position, the Developing Roller is rotated by a drive from the Rack Motor (M2) transmitted with the Developing Roller Drive Gears.
Rack Motor (M2) Developing Roller
Rack Clutch (CL1)
4131M022AA
54
7-1.
(1)
Developing Position
Toner Cartridge Rack Stop Position for Development
· The stop position for development of each Toner Cartridge is determined by the Rack Lock Lever and the Rack Home Position Sensor (PC4). · The Toner Cartridge Rack rotates and the Rack Lock Lever drops into a stopping cutout. This unblocks the Rack Home Position Sensor (PC4), thus determining the stop position for the Toner Cartridge for the current use. (2) Toner Cartridge Rack Standby Position · The standby position (reference position) of the Toner Cartridge Rack is 20° ahead of the developing stop position of the black Toner Cartridge. · When the Toner Cartridge Rack rotates and the Rack Lock Lever moves past the black position detection cutout (PC4: blocked -> unblocked), the rotating speed of the rack is decelerated. Rack Home Position Sensor (PC4)
Rack Lock Lever
Rack Home Position Sensor (PC4) Rack Lock Lever Black Stopping Cutout
Yellow Stopping Cutout
PC Drum
Magenta Stopping Cutout
Black Position Detection Cutout
4131M049AA
Cyan Stopping Cutout
55
7-2.
(1)
Toner Cartridge
Construction
· The Toner Cartridge is constructed as illustrated below. 4 5
1
4131M050AA
4131M051AA
2
3
6
7
8
1. 2. 3. 4. 5.
Toper Hopper Toner Agitating Plate Toner Transport Roller Developing Roller PC Drum
6. First Regulator Blade 7. Second Regulator Blade 8. Bias Seal
56
(2)
First Regulator Blade / Second Regulator Blade
· Regulates the amount of toner supplied to the Developing Roller. (3) Developing Roller · Carries toner, whose amount has been regulated by the Regulator Blades. (4) Developing Bias · Applied to the Developing Roller to ensure that an adequate amount of toner is fed to the PC Drum. (5) Toner Empty Detection · Toner consumption is calculated from image data for toner empty detection. · When a toner-empty condition is detected, the corresponding message is displayed on the control panel. (6) Bias Seal · Recovers toner that has not stuck to the PC Drum. 2 1 6 7
7 5 6
4131m010
3 1 4 8
4131M007AA
5
3
4
4131M008AA
1. 2. 3. 4. 5.
Developing Roller PC Drum First Regulator Blade Second Regulator Blade Regulator Blade Bias
6. Developing Bias 7. Developing Seal Bias 8. Bias Seal
57
(7)
Toner Cartridge Installation Detection
· Toner Cartridge installation detection is made with the Toner Cartridge Detection Sensor (PC8) and the Reflector in the Toner Cartridge.
Intensity of Light Reflected
Detection Method
No Cartridge installed Cartridge installed
NO YES
Reflector
Reflector
VCC
CPU GND
4131M039AA
PC8
4131M040AA
58
(8)
Detection of a brand new Toner Cartridge 1. A brand new Toner Cartridge is installed.
2. The Front Door is closed. Then, the Power Switch is turned ON. 3. The Toner Cartridge Rack is rotated to bring the Toner Cartridge at the developing position. 4. The Toner Cartridge Detection Sensor (PC8) detects whether or not the Toner Cartridge is installed. 5. The Toner Cartridge Detection Sensor judges that no Toner Cartridge is installed, since no light reflection is made with the Reflector placed under the Cover in the brand new Toner Cartridge. 6. The toner Cartridge, which is detected as "not installed," is stopped at the developing position. Then, the Developing Roller is rotated. 7. The Reflector placed under the Cover is pushed out in the Toner Cartridge with a rotation of the Developing Roller. The Toner Cartridge Detection Sensor detects that the Toner Cartridge is installed with the light reflection from the Reflector. 8. Other Toner Cartridges are stopped at the developing position respectively. If the Cartridge is a brand new, sequences from 4 through 7 are repeated for each Color Toner Cartridge. According to the above-mentioned sequential operation, the Toner Cartridge is detected as a brand new one.
No Toner Cartridge Installed
Toner Cartridge Installed Reflector
4131M041AA
4131M042AA
59
8.
8-1.
(1)
IMAGE TRANSFER
Image Transfer Belt Unit
Construction 1
2
4131M053AA
3 1. 2. 3. 4. (2) Image Transfer Belt Cleaning Blade Waste Toner Conveying Coil First Image Transfer Roller
4
5
6
5. Drive Roller 6. Second Image Transfer Roller
Drive Train 1
2
4131M009AA
1. Main Motor (M1)
2. Drive Roller
60
(3)
First Image Transfer
· The first image transfer bias is applied to the First Image Transfer Roller to transfer the toner image on the surface of the PC Drum onto the Image Transfer Belt.
First Image Transfer Roller Image Transfer Belt First Image Transfer Bias
4131M054AA
PC Drum
(4)
Second Image Transfer
· The second image transfer bias is applied to the Second Image Transfer Roller to transfer the toner image on the Image Transfer Belt onto the paper. · The residual charge left on the paper is neutralized by the Charge Neutralizer.
Drive Roller Charge Neutralizing Bias (Self Bias) Charge Neutralizer
4131M055AA
Second Image Transfer Roller
Second Image Transfer Bias
61
(5)
Second Image Transfer Roller Pressure/Retraction
· The Second Image Transfer Roller is pressed against, and retracted from, the Image Transfer Belt by a cam on the printer side that is turned as the Second Image Transfer Roller Pressure Contact Solenoid (SL5) is energized or de energized. · When the Second Image Transfer Roller Pressure Contact Solenoid (SL5) is energized, the cam on the printer side turns, causing the Pressure Lever to move the Second Image Transfer Roller away from the Image Transfer Belt. · The pressure and retracted positions are detected by the Second Image Transfer Roller Pressure Positioning Sensor (PC7).
Second Image Transfer Roller Pressure Contact Solenoid (SL5) Second Image Transfer Roller
Drive Roller Second Image Transfer Roller Spring Pressure Lever Second Image Transfer Roller Pressure Positioning Sensor Cam
4131M010AA
When Retracted
4131M056AA
When Pressed
4131M057AA
(6)
Second Image Transfer Roller Pressure/Retraction Timing
Pressed Retracted Before the paper reaches the Second Image Transfer Roller After the trailing edge of the paper has moved past the Second Image Transfer Roller
62
8-2.
Second Image Transfer Roller Cleaning
· A reverse bias is applied to the Second Image Transfer Roller to remove any residual toner left on the roller. · The residual toner is transferred onto the Image Transfer Belt and then recovered by the Cleaning Blade. (1) Operating Timing · After the lapse of a given period of time during pre-drive. · After the paper moves past the Second Image Transfer Roller when a media error occurs. · Before the second image transfer ATVC.
4131M037AA
63
8-3.
(1)
Image Transfer Belt Cleaning Mechanism
Image Transfer Belt Cleaning Blade
· The Cleaning Blade is used to scrape any residual toner off the surface of the Image Transfer Belt.
Image Transfer Belt Positioning Sensor (PC5) Cam
Belt Cleaner Separation Solenoid (SL4)
4131M011AA
Cleaning Blade Opposing Roller
Cleaning Blade
4131M058AA
64
(2)
Image Transfer Belt Cleaning Blade Retraction
· The Image Transfer Belt Cleaning Blade is retracted from the Opposing Roller by a cam on the printer side that turns as the Belt Cleaner Separation Solenoid (SL4) is energized or deenergized. · The cam on the printer side is made into direct contact with the Cleaning Blade housing so that the Cleaning Blade is retracted. · The Image Transfer Belt Cleaning Blade is detected at its retracted position when the cam turns to deactivate the Belt Cleaner Positioning Sensor (PC9).
4131M059AA
Main Motor (M1) Belt Cleaner Positioning Sensor
ON OFF
Pressure Pressure
ON OFF
Belt Cleaner Separation Solenoid (SL4)
Retraction * In color printing
4131M030AA
65
8-4.
Waste Toner Bottle
· Waste toner on the PC Drum and the Image Transfer Belt is collected. · The waste toner sticking to the surface of the PC Drum is scraped off by the Cleaning Blade and conveyed