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Service Manual
PagePro 1300W/1350W
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 given in the following do not apply. · Different markings are used to denote specific meanings as detailed below.
WARNING
· Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION
· 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. · 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 will 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 Operator's Manual.
P-1
WARNING
2. Before starting the procedures, be sure to unplug the power cord. · 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. 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. · Use only the power cord supplied in the package. If a power cord is not supplied, only use the power cord and plug that is specified in POWER CORD INSTRUCTION. Failure to use this cord could result in a fire or electrical shock. · Use the power cord supplied in the package only for this machine and NEVER use it for any other product. Failure to observe this precaution could result in a fire or electrical shock. 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.
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WARNING
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. 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 destruction. 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 copier from the outlet before attempting to service the copier. · The basic rule is not to operate the copier anytime during disassembly. If it is absolutely necessary to run the copier 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 copier 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 copier. · 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 tube.
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8. Handling of the PC Drum Only for Products Not Employing an Imaging Cartridge. During Transportation/Storage · Use the specified carton whenever moving or storing the PC Drum. · The storage temperature is in the range between 20°C and +40°C. · In summer, avoid leaving the PC Drum in a car for a long time. Handling · Ensure that the correct PC Drum is used. · Whenever the PC Drum has been removed from the copier, store it in its carton or protect it with a Drum Cloth. · The PC Drum exhibits greatest light fatigue after being exposed to strong light over an extended period of time. Never, therefore, expose it to direct sunlight. · 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 apply chemicals to the surface of the PC Drum. · Do not attempt to wipe clean the surface of the PC Drum. If, however, the surface is contaminated with fingerprints, clean it using the following procedure. A. Place the PC Drum into one half of its carton.
1076D001
1076D002
B. Gently wipe the residual toner off the surface of the PC Drum with a dry, Dust-Free Cotton Pad. · Turn the PC Drum so that the area of its surface on which the line of toner left by the Cleaning Blade is present is facing straight up. Wipe the surface in one continuous movement from the rear edge of the PC Drum to the front edge and off the surface of the PC Drum. · Turn the PC Drum slightly and wipe the newly exposed surface area with a CLEAN face of the Dust-Free Cotton Pad. Repeat this procedure until the entire surface of the PC Drum has been thoroughly cleaned. At this time, always use a CLEAN face of the dry Dust-Free Cotton Pad until no toner is evident on the face of the Pad after wiping.
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C. Soak a small amount of either ethyl alcohol or isopropyl alcohol into a clean, unused Dust-Free Cotton Pad which has been folded over into quarters. Now, wipe the surface of the PC Drum in one continuous movement from its rear edge to its front edge and off its surface one to two times. Never move the Pad back and forth.
1076D003
D. Using the SAME face of the Pad, repeat the procedure explained in the latter half of step 3 until the entire surface of the PC Drum has been wiped. Always OVERLAP the areas when wiping. Two complete turns of the PC Drum would be appropriate for cleaning.
1076D004
NOTES · Even when the PC Drum is only locally dirtied, wipe the entire surface. · Do not expose the PC Drum to direct sunlight. Clean it as quickly as possible even under interior illumination. · If dirt remains after cleaning, repeat the entire procedure from the beginning one more time.
9. Handling of the Imaging Cartridge and Print Unit Only for Products Employing an Imaging Cartridge and Print Unit. During Transportation/Storage · The storage temperature is in the range between 20 °C and +40 °C. · In summer, avoid leaving the Imaging Cartridge and Print Unit in a car for a long time. Handling · Store the Imaging Cartridge and Print Unit in a place that is not exposed to direct sunlight. Precautionary Information on the PC Drum Inside the Imaging Cartridge and Print Unit. · 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 power of the laser diode Maximum average radiation power(*) Wavelength *:at laser aperture of the Print Head Unit · 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. Laser Aperture of the Print Head Unit 15 mW 36.903 µW 770-800 nm
4136S002AA
This figure shows the view inside the Front 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 15 mW 770-800 nm 15 mW 770-800 nm
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 15 mW 770-800 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 15 mW 770-800 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 15 mW 770-800 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 15 mW 770-800 nm
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1-7.
Laser Safety Label
· A laser safety label is attached to the machine as shown below.
4136S505AB
1-8.
Laser Caution Label
· A laser caution label is attached to the inside of the machine as shown below.
4136S001AA
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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 premises. · The Print Head are not to be disassembled or adjusted in the field. Replace the Unit or Assembly including the Control Board. Therefore, remove the Laser Diode, and do not perform Control Board trimmer adjustment.
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INDEX GENERAL TROUBLESHOOTING MECHANICAL/ELECTRICAL
MAINTENANCE DIS/REASSEMBLY, ADJUSTMENT CONTROL PANEL/SERVICE MODE DESCRIPTIONS
CONTENTS
GENERAL
1. SPECIFICATIONS ...........................................................................................G-1 2. PRECAUTIONS FOR INSTALLATION ............................................................G-3 2-1. Installation Site .........................................................................................G-3 2-2. Power Source ...........................................................................................G-3 2-3. Installation Space .....................................................................................G-4 3. PRECAUTIONS FOR USE ..............................................................................G-5 3-1. To Ensure the Printer is Used in an Optimum Condition .........................G-5 3-2. Operating Environment ............................................................................G-5 3-3. Power Requirements ................................................................................G-5 3-4. Miscellaneous Precautions ......................................................................G-5 4. HANDLING OF THE CONSUMABLES ............................................................G-6 5. PARTS IDENTIFICATION ................................................................................G-7
MECHANICAL/ELECTRICAL
1. COMPONENTS LAYOUT ................................................................................M-1 2. PAPER PATH ..................................................................................................M-2 3. ELECTRICAL COMPONENTS LAYOUT .........................................................M-3 3-1. Printer .......................................................................................................M-3 4. OPERATING SEQUENCE ...............................................................................M-4 4-1. Print Start Sequence ................................................................................M-4 4-2. Print End Sequence .................................................................................M-4 5. PRINT HEAD (PH) ...........................................................................................M-5 5-1. Construction .............................................................................................M-5 5-2. Laser Exposure Process ..........................................................................M-6 5-3. Laser Emission Timing .............................................................................M-7 5-4. Laser Emission Area ................................................................................M-8 (1) Main scanning direction ...................................................................M-8 (2) Sub-scanning direction ....................................................................M-8 5-5. Cooling of the Printer Interior ...................................................................M-9 6. DRUM CHARGE ..............................................................................................M-10 (1) Overview ..........................................................................................M-10 (2) Construction .....................................................................................M-10 7. IC (IMAGING CARTRIDGE) SECTION ...........................................................M-11 7-1. Overview ..................................................................................................M-11 7-2. PC Drum ..................................................................................................M-13 7-3. Developing System ..................................................................................M-14 7-4. Detection of Toner Cartridge ....................................................................M-15 (1) Installation detection ........................................................................M-15 (2) Detection of a new Toner Cartridge .................................................M-15 (3) Toner near empty and empty detection ...........................................M-15 8. IMAGE TRANSFER .........................................................................................M-16 8-1. Overview ..................................................................................................M-16 9. FUSING UNIT ..................................................................................................M-17 9-1. Overview ..................................................................................................M-17 9-2. Fusing Unit Temperature Control .............................................................M-18
i
(1) Temperature change ........................................................................M-18 (2) Temperature control .........................................................................M-18 (3) Temperature control mode ...............................................................M-19 (4) Fusing temperature in each mode ...................................................M-19 10. PAPER TAKE-UP SECTION ...........................................................................M-20 10-1.Multipurpose Tray ....................................................................................M-20 (1) Paper take-up mechanism ...............................................................M-20 (2) Double feed preventive mechanism .................................................M-20 (3) Paper empty detection .....................................................................M-21 (4) Paper take-up retry function .............................................................M-21 11. PAPER EXIT ....................................................................................................M-22 11-1.Paper Exit Mechanism .............................................................................M-22
MAINTENANCE
1. MAINTENANCE SCHEDULE ..........................................................................E-1 1-1. Guidelines for Life Specifications Values by Unit .....................................E-2 (1) Near life values ................................................................................E-2 (2) Life values ........................................................................................E-2 2. REPLACEMENT/CLEANING OF PARTS ........................................................E-3 (1) Cleaning of the Paper Take-Up Roll ................................................E-3 (2) Replacement of the Paper Take-Up Roll .........................................E-3 (3) Replacement of the Image Transfer Roller ......................................E-4 3. REPLACEMENT OF UNITS ............................................................................E-5 (1) Replacement of the Toner Cartridge ................................................E-5 (2) Replacement of the Drum Cartridge ................................................E-7 (3) Replacement of the Fusing Unit .......................................................E-8
DIS/REASSEMBLY, ADJUSTMENT
1. PRECAUTIONS FOR DISASSEMBLY/ADJUSTMENTS .................................D-1 1-1. Parts That Must Not be Touched .............................................................D-1 (1) Variable resistors on board ..............................................................D-1 2. DISASSEMBLY/REASSEMBLY ......................................................................D-2 2-1. Identification of Exterior Parts and Removal Procedures for Them .........D-2 (1) Removal of the Left Cover ...............................................................D-3 2-2. Removal of Circuit Boards and Other Electrical Components .................D-4 (1) Removal of the Controller/Mechanical Control Board ......................D-5 (2) Removal of the Control Panel ..........................................................D-5 (3) Removal of the Power Unit ..............................................................D-6 (4) Removal of the High Voltage Unit ....................................................D-6 2-3. Removal of Units ......................................................................................D-7 (1) Removal of the PH Unit ...................................................................D-7 2-4. Disassembly of the Engine .......................................................................D-8 (1) Removal of the Main Motor ..............................................................D-8 (2) Removal of the Paper Empty Sensor ...............................................D-8 (3) Removal of the Paper Take-Up Solenoid ........................................D-9 (4) Removal of the Paper Take-Up Clutch Gear ...................................D-10 (5) Disassembly of the Fusing Unit .......................................................D-11
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CONTROL PANEL/SERVICE MODE DESCRIPTIONS
1. Indicator functions ............................................................................................S-1 1-1. Explanation for the Button and function ...................................................S-1 1-2. Continuing a Print Job after an Error Message ........................................S-1 1-3. Canceling a Print Job ...............................................................................S-1 1-4. Indication on the Control Panel ................................................................S-1 2. The kind of Indication .......................................................................................S-2 2-1. Status message .......................................................................................S-2 2-2. Error message ..........................................................................................S-3 2-3. Service messages ....................................................................................S-4 3. Others ..............................................................................................................S-5 3-1. Configuration page ...................................................................................S-5
TROUBLESHOOTING
1. INTRODUCTION ..............................................................................................T-1 1-1. Electric Components Check Procedures .................................................T-1 (1) Sensors ............................................................................................T-1 (2) Switches ...........................................................................................T-2 (3) Solenoids .........................................................................................T-2 (4) Motors .............................................................................................T-3 1-2. Overall Control Configuration ...................................................................T-4 2. PAPER MISFEED ............................................................................................T-5 2-1. Initial Check Items ....................................................................................T-5 2-2. Locations of Misfeed Detection Sensors ..................................................T-6 2-3. Misfeed Detection Timing and Troubleshooting Procedures ...................T-7 (1) Paper Take-Up/Transport Misfeed ...................................................T-7 (2) Fusing/Exit Misfeed ..........................................................................T-8 3. MALFUNCTIONS/WARNING ..........................................................................T-9 3-1. List of Malfunctions ..................................................................................T-9 3-2. Malfunction Detection Timing and Troubleshooting Procedures ..............T-11 (1) Polygon Motor malfunction ..............................................................T-11 (2) Laser malfunction .............................................................................T-12 (3) Cooling Fan Motor malfunction ........................................................T-12 (4) Warm-up failure ...............................................................................T-13 (5) Abnormally low fusing temperature ..................................................T-14 (6) Abnormally high fusing temperature ................................................T-15 (7) High voltage failure ..........................................................................T-15 (8) Controller-related malfunctions ........................................................T-16 4. MALFUNCTIONS RELATED TO POWER SUPPLY .......................................T-17 4-1. Power is not Turned ON. ..........................................................................T-17 5. IMAGE QUALITY PROBLEMS ........................................................................T-18 5-1. Troubleshooting Procedure by Image Quality Problem ...........................T-18 (1) Blank print and black print ................................................................T-18 (2) Void areas ........................................................................................T-19 (3) Back marking ...................................................................................T-19 (4) Low image density ...........................................................................T-20 (5) Foggy background ...........................................................................T-21 (6) White lines, white bands ..................................................................T-21
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(7) (8) (9)
Black lines, black bands ...................................................................T-22 Offset .............................................................................................T-22 Uneven image ..................................................................................T-23
iv
GENERAL
1.
Printer
SPECIFICATIONS
Type Exposure System Resolution Copy Paper Size Media Type
: : : :
Desktop Laser Beam Printer Laser diode + Polygon Mirror 600 dpi (1200 dpi in half-speed mode) A4, A5, B5 8.5 × 14, 8.5 × 11, 3 × 5, 5.5 × 8.5, 7 1/4 × 10 1/2 Recycled paper (60 to 90 g/m2) OHP transparencies, letterhead, envelopes, labels Thick paper (91 to 163 g/m2) Postcard, prepaid postcard (with no crease) At 600 × 600 dpi: 13 sec. (A4L/Letter L) At 1200 × 600, 1200 × 1200 dpi: 21 sec. or less (A4L/Letter L) PP1350W At 600 dpi: 20 prints/min. or more (A4L/Letter L) At 1200 dpi: 10 prints/min. or more (A4L/Letter L) PP1300W At 600 dpi: 16 prints/min. or more (A4L/Letter L) At 1200 dpi: 10 prints/min. or more (A4L/Letter L) 10 sec. or less (with the rated voltage supplied at 23 °C, from Pause to be ready for first print; 21 sec. or less for a condition immediately after power has been turned ON) 115.098 mm/sec. (57.505 mm/sec. during half-speed control) 1-way system (Multipurpose Tray) MP Tray = 150 sheets
: Plain paper (60 to 90 g/m2)
First Printing Time Multi Print Speed
: :
Warm-up Time
:
System Speed Paper Feeding System Capacity (recommended paper) Paper Exit System Drum Charging System Developing System Image Transfer System PC Drum Drum Cleaning System Paper Separating System Fusing System Dimensions
: : :
Mass Power Requirements Max. Power Consumption Acoustic Noise Operating Environment
: Face down (tray capacity: 100 sheets) (recommended paper) : Rotating brush + pre-charge film : FMT single-component developing system : Transfer Roller system : OPC (organic photoconductor) : Non-cleaner system : Curvature separating system + Charge Neutralizing Needle : Heated roller system : 150-sheet-capacity printer Width: 386.8 mm Depth: 404.5 mm Height: 348 mm : 7.8 kg (including DC/TC) : 100 V, 50/60 Hz ± 3 Hz, 9.2 A or less : 900 W : Standby: 30 dB(A) or less Printing: 54 dB(A) or less : 10 to 35 °C, 15 to 85 %
G-1
Controller (GDI) Control Panel ASIC Memory Configuration : LED × 1, SW × 1 : N1-Chips (Naltec Original ASIC) : Standard ROM: 64 KB (in ASIC) EEPROM: 1 Kilobit Flash ROM: 2 Megabits (250 KB) RAM: 8 MB (64-Megabit SDRAM: 64 Megabits × 1) : IEEE1284 Parallel (Compatible/Nibble/ECP) USB 1.1 : 600 × 600 dpi, 1200 × 600 dpi, 1200 × 1200 dpi (1200 × 600 dpi and 1200 × 1200 dpi are half speed) : None : Windows 98SE/2000/Me/XP : Configuration page
Interface Resolution Emulation Printer Driver Test Print
G-2
2.
2-1.
PRECAUTIONS FOR INSTALLATION
Installation Site
To ensure utmost safety and avoid breakdown, the printer should NOT be used in a place: · Where it will be subjected to extremely high or low temperature or humidity. · Where it will be subjected to sudden fluctuations in either temperature or humidity. · Which is exposed to direct sunlight. · Which is in the direct air stream of an air conditioner, heater, or ventilator. · Which has poor ventilation or is dusty. · Which does not have a stable, level floor or where it will receive undue vibration. · Which is near any kind of heating device. · Which is near volatile flammables (thinner, gasoline, etc.). · Where it may be splashed with water and electric leakage is likely to occur. · Which puts the operator in the direct stream of exhaust from the printer. · Where ammonia gas might be generated.
2-2.
Power Source
· If any other electrical equipment is sourced from the same power outlet, make sure that the capacity of the outlet is not exceeded. · Use a power source with little voltage fluctuation. · Never connect by means of a multiple socket any other appliances or machines to the outlet being used for the printer. · Ensure that the printer does not ride on the power cord or communications cable of other electric equipment, and that it does not become wedged into or underneath the mechanism. · Make the following checks at frequent intervals: Is the power plug abnormally hot? Are there any cracks or scrapes in the cord? Has the power plug been inserted fully into the outlet? Does something, including the printer itself, ride on the power cord? Use an outlet with a capacity of 100 V, 15 A or more.
G-3
2-3.
age.
Installation Space
· Always ground the printer to prevent receiving electric shocks in the case of electric leak· Connect the ground wire to the ground terminal of the outlet or a grounding contact that complies with the local electrical standards. · Never connect the ground wire to a gas pipe, the ground wire for a telephone, lightning arrester, or a water pipe for fear of fire and electric shock.
15.2 in (387 mm)
4136M010AA
10.2 in (260 mm)
9.8 in (249 mm) 11.5 in (291 mm) 15.9 in (405 mm)
11.1 in (283 mm)
13.7 in (348 mm)
4136M011AA
G-4
3.
3-1.
PRECAUTIONS FOR USE
To Ensure the Printer is Used in an Optimum Condition
· Never place a heavy object on the printer or subject the printer to shocks. · Insert the power plug all the way into the outlet. · Do not attempt to remove any panel or cover that is secured while the printer is in a print cycle. · Do not turn OFF the printer while it is in a print cycle. · Provide good ventilation if the printer is to be used for a long time in a narrow room. · Never use flammable sprays near the printer. · If the printer becomes inordinately hot or produces abnormal noise, immediately turn it OFF and unplug it. · Do not turn ON the power switch at the same time that you plug the power cord into the outlet. · When unplugging the power cord, do not pull on the cord; hold the plug and pull it out. · Do not bring any magnetized object near the printer. · Do not place a vase or vessel containing water on the printer. · Be sure to turn OFF the power switch at the end of the workday or upon power failure. · Use care not to drop paper clips, staples, or other small pieces of metal into the printer.
3-2.
Operating Environment
The operating environmental requirements of the printer are as follows. · Temperature: 10 to 30 °C · Humidity: 15 to 85 % · Rate of temperature change: 10 °C/h · Rate of humidity change: 10 %/h
3-3.
Power Requirements
The power source voltage requirements are as follows. · Voltage fluctuation: AC100 V ± 10 % · Frequency fluctuation: 50/60 Hz ± 3 Hz
3-4.
Miscellaneous Precautions
Use the following precautions when performing service jobs for a printer that uses a laser. · When a service job needs to be performed in the laser beam path, such as when working around the Print Head Unit or PC Drum, be sure first to unplug the power cord of the printer from the outlet. · If the service job requires that the power cord be left plugged in, observe the following precautions: · Take off your watch, ring, and any other reflective object and wear laser protective goggles. · Keep users away from the job site. · Do not bring a highly reflective tool into the laser beam path during the service job.
G-5
4.
HANDLING OF THE CONSUMABLES
Before using any consumables, always read the label on its container carefully. · Paper can easily damp. To prevent absorption of moisture, store paper in a place with little moisture. · Keep consumables out of the reach of children. · Do not touch the PC Drum with bare hands. · The same sized paper is of two kinds, short grain and long grain. Short grain paper should only be fed through the printer crosswise, while long grain paper should only be fed lengthwise. The wrapper of the paper is properly marked. · If your hands become soiled with toner, wash them with soap and water. · Do not throw away any used consumables. They are to be collected. · Do not burn, bury in the ground, or throw into the water any consumables. · Do not store consumables in a place which: Is hot and humid. Is subject to direct sunlight. Has an open flame nearby.
G-6
5.
PARTS IDENTIFICATION
1 2 11 3
4
4136M537AB
5 7 6 12
4136M552AA
4136M538AA
10 8 9
4136M553AA
1. Upper Cover 2. Face-down Tray 3. Control Panel 4. Front Door 5. Multipurpose Tray 6. Edge Guides
7. Power Switch 8. Power Cord Socket 9. Parallel Interface Connector 10. USB Interface Connector 11. Toner Cartridge 12. Drum Cartridge
G-7
MECHANICAL/ ELECTRICAL
1.
COMPONENTS LAYOUT
2 1 7
3
6
5 4
4136M534AA
1. Print Head (PH) Unit 2. Exit Roller 3. Fusing Unit 4. Image Transfer Section
5. Multipurpose (MP) Tray 6. Toner Cartridge 7. Drum Cartridge
M-1
2.
PAPER PATH
Exit Tray
Multipurpose Tray
4136M539AA
· The printer adopts the 1-way paper feeding system by means of the Multipurpose Tray (capable of holding up to 150 sheets of paper). · The paper taken up and fed in by the Paper Take-Up Roll is transported through the printer by the Image Transfer Roller, Fusing Roller, and Exit Roller and fed out of the printer face down onto the Exit Tray.
M-2
3.
3-1.
ELECTRICAL COMPONENTS LAYOUT
Printer
HV1 PS3 PU1 S2
PH PWB-P
H1 M2
M1 TH1 TS1 PE1 S1
4136M001AB
SL1
M1 M2 H1 TH1 TS1 PH S1
Main Motor Cooling Fan Motor Fusing Roller Heater Lamp Thermistor Thermostat Print Head Unit Paper Take-Up Switch
S2 PE1 PS3 SL-1 PU-1 HV-1
Front Door Switch Multipurpose Tray Paper Empty Sensor Exit Sensor Paper Take-Up Solenoid Power Unit High Voltage Unit
PWB-P Controller/Mechanical Control Board
M-3
4.
4-1.
OPERATING SEQUENCE
Print Start Sequence
/PRINT Polygon Motor Main Motor
Paper Take-Up Solenoid
/S1
Drum Charge Output Drum charge DC Drum charge DC
Exposure Output
Developing Output
Charge
Reverse bias
Charge
Reverse bias
ON
Image Transfer Output
Unexposed area output
Negative output
Negative output
4-2.
Print End Sequence
PS3 Polygon Motor Main Motor Drum Charge Output Laser Output
ON ON
ON
DC
AC
Unexposed area illumination
Substantially entire surface exposure
Unexposed area illumination Charge
Developing ON Output
Reverse bias Negative Positive Negative
Image Transfer Output
M-4
5.
5-1.
PRINT HEAD (PH)
Construction
· The laser beam light emitted from the Print Head is used to scan the image as driven by the Polygon Motor.
SOS Sensor Semiconductor Laser
G1 Lens G2 Lens 1st Mirror
2nd Mirror SOS Mirror Polygon Mirror
4136M005AA
M-5
5-2.
Laser Exposure Process
· The laser beam light emitted from the Print Head is used to create an electrostatic latent image on the surface of the PC Drum. · The following control is provided to correctly time image printing. Print Head Unit
Laser Diode
Polygon Motor
SOS Sensor PC Drum
4136M006AA
· When the printer receives a PRINT signal, the Polygon Motor and the Main Motor start rotating and the paper is taken up and fed into the printer. · The printing is started when the Controller/Mechanical Control Board sends a VIDEO signal to the Print Head a given period of time after the leading edge of the paper actuates the Paper Take-Up Switch (TOD signal). · The print start position for the 2nd line is defined by delaying the time, at which the VIDEO signal is to be transmitted. · The SOS Sensor provided in the PH ensures that the laser beam is emitted at the same timing for all lines in the main scanning direction.
M-6
5-3.
Laser Emission Timing
· When a READY signal is detected a given period of time after the print command has been issued, the Controller/Mechanical Control Board outputs a laser ON signal. · The laser ON signal makes a laser beam to be emitted and the laser beam travels to the Polygon Mirror, G1 Lens, and the SOS Mirror to eventually hit the SOS Sensor, which generates an SOS signal. · The SOS signal determines the laser emission timing for each line in the main scanning direction.
SOS Mirror
G1 Lens
Polygon Mirror
SOS Sensor
4136M517AA
M-7
5-4.
(1)
Laser Emission Area
Main scanning direction
· The print start position is determined by the main scanning print start signal (/HSYNC) output from the Controller/Mechanical Control Board and the width of the paper. · The laser emission area is determined by the paper size. Areas with a width of 4 mm on both edges are not, however, printed. (2) Sub-scanning direction
· The print start position is determined by the sub-scanning print start signal (/TOD) output from the Controller/Mechanical Control Board and the length of the paper. · The laser emission area is determined by the paper size. Areas with a width of 4 mm on both the leading and trailing edges are not, however, printed.
/HSYNC /VIDEO 4 mm 4 mm /VIDEO /TOD
4 mm
4 mm
4 mm
4136M503AA
M-8
5-5.
Cooling of the Printer Interior
· The Cooling Fan Motor is used to discharge heat generated from the PH Unit out of the printer, thereby preventing the PH Unit from getting hot.
PH Unit
Cooling Fan Motor
4136M518AA
M-9
6.
(1)
DRUM CHARGE
Overview
· The PC Drum is charged with static electricity before laser exposure. · The Drum Charge Brush and the Pre-charge Film are used for charging. · Since the Drum Charge Brush and the Pre-charge Film directly deposit charge on the PC Drum, they produce little ozone. Further the charging voltage is low and the deposited charge is even and stable across the surface of the PC Drum. · The Pre-charge Film supplies a preliminary charge to the PC Drum prior to charging by the Drum Charge Brush, thereby increasing charging efficiency. (2) Construction Drum Cartridge Paper Dust Remover Drum Cover
Drum Charge Brush
Pre-charge Film
PC Drum
4136M519AA
1
2
4
3
4136M528AA
1. Drum Charge Brush 2. PC Drum 3. Ground 4. Drum Charge Brush voltage
M-10
7.
7-1.
IC (IMAGING CARTRIDGE) SECTION
Overview
· The illustration below shows the construction of the Toner Cartridge and the Developing Unit. · This printer adopts the single-component FMT, or Fine Micro Toning, developing system. · The Toner Agitating Screw conveys toner in the Toner Cartridge onto the Toner Supply Roller. · The Toner Supply Roller transports the toner to the Sleeve Roller. The Resin Sleeve of the Sleeve Roller carries the toner onto the PC Drum to form a toner image on the latent image formed on the surface of the PC Drum. Imaging Cartridge (T/C + D/C)
PC Drum
T/C
Toner Hopper Toner Agitating Screw Toner Supply Roller 2nd Toner Blade Sleeve Roller
4136M504AA
1st Toner Blade
Resin Sleeve Bias Seal
4136M529AA
M-11
· The Imaging Cartridge consists of a T/C (Toner Cartridge) and a D/C (Drum Cartridge) (see the illustration below). D/C (Drum Cartridge) Imaging Cartridge
4136M511AA
4136M513AA
T/C (Toner Cartridge)
M-12
7-2.
PC Drum
· The PC Drum used in this printer is the organic photoconductor (OPC) type. · The drum consists of two layers - Charge Transport Layer (CTL) and the Charge Generating Layer (CGL) - applied to an aluminum alloy base (cylinder). Handling Precautions: The PC Drum of this type exhibits light fatigue after being exposed to light for a long time, which results in its sensitivity being changed. Therefore, 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 prevent the surface of the PC Drum from being dirtied. CTL CGL Aluminum Cylinder
1167M007AA 1139M007AA
· Grounding of the PC Drum The ground contact point (Ground Plate) for the PC Drum is located inside the PC Drum at its front side. It is, at all times, in contact with the shaft of the front plate of the Imaging Cartridge. When the Imaging Cartridge is loaded in the printer, the set pin of the front plate of the Imaging Cartridge contacts a side plate on the printer side, thereby providing grounding. The potential on the surface of the PC Drum exposed to the laser beam is then grounded through the Ground Plate, shaft, and set pin to the frame of the printer. PC Drum Front Plate
Shaft
Ground Plate
4136M514AA
M-13
7-3.
Roller.
Developing System
· The Toner Agitating Screw conveys toner in the Toner Cartridge onto the Toner Supply · The Toner Supply Roller transports the toner to the Sleeve Roller. · The 1st Toner Blade located above the Sleeve Roller spreads a thin, even coat of toner over the Sleeve Roller. · A negative charge is applied to the 2nd Toner Blade, which negatively charges the toner. · The Sleeve Roller is negatively charged, which retains the toner thereon. · The toner sticks to the area on the surface of the PC Drum that has been exposed to the laser beam. · The Bias Seal on the underside of the Sleeve Roller separates toner, which has not been attracted onto the surface of the PC Drum, from the Sleeve Roller and returns it back to the Toner Hopper. The same bias as that applied to the Sleeve Roller is applied to this Bias Seal, thereby preventing toner from falling. · The developing bias automatically adjusts the print image density over a range of seven steps through feedback control. A bias voltage, reversed from the developing bias, is applied before a print command is issued, before predrive, and during predrive, to prevent toner from sticking to the surface of the PC Drum. 2nd Toner Blade PC Drum
1st Toner Blade Sleeve Roller
Bias Seal
4136M505AA
Toner Blade Voltage Developing Voltage Terminal Terminal Developing Lower Seal (Bias Seal) Terminal Toner Supply Roller
Developing Lower Seal (Bias Seal) Terminal
0992S24
Developing Voltage Terminal Toner Blade Voltage Terminal
M-14
7-4.
(1)
Detection of Toner Cartridge
Installation detection
· The IC chip (CSIC) built into the Toner Cartridge detects that the Imaging Cartridge is installed in position when the power switch is turned OFF and ON, and the Front Door is opened and closed. The detection is made electrically. (2) Detection of a new Toner Cartridge
· The IC chip (CSIC) built into the Toner Cartridge detects a new Toner Cartridge only when it is first installed. (3) Toner near empty and empty detection
· The built-in CSIC Board counts the amount of toner still available for use in the Toner Cartridge. · The counter counts one when the amount of toner equivalent to A4, B/W 5 % is consumed and the corresponding data is stored in the CSIC Board. · A toner near empty condition and a toner empty condition are detected when the counter reads the corresponding predetermined count. CSIC Board
4136M537AB
4136M540AA
M-15
8.
8-1.
IMAGE TRANSFER
Overview
· The toner image formed on the surface of the PC Drum during the developing process is transferred onto the paper. · This printer adopts the roller image transfer system, in which the Image Transfer Roller is used to transfer the image onto the paper. · In the roller image transfer system, the paper is pinched between the PC Drum and the Image Transfer Roller at all times during the print cycle. This results in a very little amount of ozone being produced and there is a little chance of a double transferred image occurring. · To clean the Image Transfer Roller, reverse bias is applied to the Image Transfer Roller. · The cleaning sequence is carried out when the printer is started, a print command is issued, a print cycle is completed, and when the printer is started after a misfeed has been cleared. · There is the Charge Neutralizing Needle installed for neutralizing the paper after image transfer. PC Drum
Paper Image Transfer Roller
4121s034
Paper PC Drum Charge Neutralizing Needle Image Transfer Roller
Reverse Bias
Image Transfer Bias
4136M515AA
M-16
9.
9-1.
FUSING UNIT
Overview
· The toner image transferred onto the paper is securely fixed to the paper. · A heated roller system is used as the fusing system. The paper, to which the toner image has been transferred, is fed between the Fusing Roller heated by the Fusing Roller Heater Lamp and the Pressure Roller. This permanently fixes the toner image in the paper. Fusing Paper Separator Finger Actuator
Thermostat (TS1) Exit Sensor
Thermistor (TH1)
Pressure Roller
Fusing Roller Heater Lamp (H1) Fusing Roller Fusing Entrance Guide Plate
4136M520AA
M-17
9-2.
(1)
Fusing Unit Temperature Control
Temperature change Warm-up 205 °C 185 °C 160 °C 155 °C Printing (1200 dpi) Printing (600 dpi) Thermistor-detected temperature
Fusing Roller Temperature (°C)
130 °C
Standby
Mode 1: 300 sec.
Mode 2: 208 sec.
Mode 3
Thermistor-Detected Temperature at Start of Temperature Control Less than 50 °C Power OFF Mode before Temperature Control Mode 1 Mode 2 Mode 3 Mode 1 Mode 2 50 °C to 130 °C More than 130 °C Mode 2 Mode 1 Mode 3 Mode 3
(2)
Temperature control
· During a warm-up cycle, the fusing temperature is increased to a predetermined level. · The warm-up control is performed when the power is turned ON, the Front Door is opened and closed, and the Pause mode is canceled. · During the standby state, the fusing temperature is kept lower (130 °C) than during printing so as to economize on power consumption. · The temperature control mode selected when temperature control is resumed (when the power is turned ON, the Front Door is opened and closed, or the Pause mode is canceled) is determined by the mode set before the interruption and the fusing temperature. · In the Pause (low power consumption) mode, the Fusing Roller Heater Lamp is turned OFF to reduce power consumption.
M-18
(3)
Temperature control mode
During a print cycle, the fusing temperature is regulated in accordance with the elapsed time since the completion of the warm-up cycle. · Mode 1 Mode 1 lasts for 5 min. If, however, mode 1 is interrupted in mid-operation and the thermistor temperature is 50 °C or more, the timer count before the interruption continues. When mode 1 is completed, mode 2 starts. · Mode 2 Mode 2 lasts for 208 sec. During this period, the fusing temperature is gradually decreased and, when it is decreased to the fusing temperature of mode 3, mode 2 is terminated and mode 3 is started. · Mode 3 Mode 3 continues until the temperature control is interrupted (as by opening and closing the Front Door, etc.). (4) Fusing temperature in each mode Mode 1 Plain paper 600 dpi Thick paper, envelope, postcard OHP transparencies Plain paper 1200 dpi Thick paper, envelope, postcard OHP transparencies 155 °C 195 °C 160 °C 205 °C Mode 2 205 °C 185 °C 205 °C 215 °C 195 °C 185 °C 160 °C 155 °C 165 °C 170 °C 155 °C 150 °C 150 °C 185 °C 155 °C Mode 3 185 °C
M-19
10. PAPER TAKE-UP SECTION
10-1.
(1)
Multipurpose Tray
Paper take-up mechanism
· When the Paper Take-Up Solenoid is energized, drive from the Main Motor is transmitted to the Paper Take-Up Roll through the Paper Take-Up Clutch, turning the Paper Take-Up Roll. · At the same time, the Depressing Cam turns so as to raise the Paper Lifting Plate. Then, the top sheet of paper loaded in the tray is taken up and fed into the printer. · The actual length of paper is detected based on the period of time through which the Paper Take-Up Switch remains actuated (or through which the paper moves past the switch) and the system speed. It is then determined whether or not the actual length matches the paper length specified on the controller. Paper Take-Up Roll
Paper Take-Up Switch (S1)
Gear with Depressing Cam
Tray
Paper Take-Up Solenoid (SL-1)
4136M558AA
Standby Tray
When Paper is Taken up Depressing Cam
4136M556AA
4136M557AA
(2)
Double feed preventive mechanism
A fixed paper separator pad is used to prevent the second and subsequent sheets of paper from being taken up and fed in with the first one.
M-20
(3)
Paper empty detection
· There is a Multipurpose Tray Paper Empty Sensor provided on the upper portion of the Multipurpose Tray. It detects paper loaded in the tray. · When there is a paper stack loaded in the tray, the actuator is raised to block the Paper Empty Sensor. · When paper runs out, the actuator drops into the hole in the tray, unblocking the Paper Empty Sensor.
Multipurpose Tray Paper Empty Sensor (PE1) Actuator
4136M536AA
(4)
Paper take-up retry function
· To reduce the number of paper misfeeds as a result of a paper take-up failure, a paper take-up retry sequence is carried if the Paper Take-Up Switch is not actuated and deactuated within a predetermined period of time. · This function is provided for paper take-up from any printer paper tray.
M-21
11. PAPER EXIT
11-1. Paper Exit Mechanism
· The paper exit mechanism transports the paper that has been subjected to the fusing process onto the Exit Roller. · The Exit Sensor detects not only a paper misfeed but also an open Upper Cover.
Exit Tray Exit Roll Face-down Exit
Exit Sensor (PS3)
Exit Roller
4136M516AA
M-22
MAINTENANCE
1.
MAINTENANCE SCHEDULE
· To ensure that the printer produces good printed pages and to extend its service life, it is recommended that the maintenance jobs described in this schedule be carried out as instructed. Replace PM Parts Clean Continuous Making one Ref. Page in printed page This Manual per job E-3 E-4 16K 2.4K/4.8K 1.2K 50K E-7 E-5 E-5 E-8
Paper Take-Up Roll Image Transfer Roller Drum Cartridge Toner Cartridge (for replacement) Toner Cartridge (shipped with printer) Fusing Unit
When a paper take-up Replace when a paper failure occurs take-up failure occurs 20K 3K/6K 1.5K 50K
NOTES · K = 1,000 printed pages · As a rule, the Drum Cartridge and Toner Cartridge are to be replaced by the user. · The contents of the Maintenance List are subject to change without notice. · For the part numbers, see Parts Manual and Parts Modification Notice.
E-1
1-1.
Guidelines for Life Specifications Values by Unit
· The life specifications value represents the number of printed pages produced or figures equivalent to it when given conditions (see the Table given below) are met. It can be more or less depending on how each individual printer is used. Print Conditions Job type Paper size B/W ratio (1) Near life values Near life value 1.5K Toner Cartridge 3.0K 6.0K 1.3K 2.9K 5.8K Making one printed page per job A4L/Letter L 5% Continuous
Unit name
Detection The value used for detection of the amount of toner still available for use is provided as feedback information for calculating toner consumption, thereby detecting a toner near empty condition.
(2)
Life values Life value 1.5K 1.5K 3.0K 6.0K 3.0K 6.0K
Unit name
Detection The value used for detection of the amount of toner still available for use is provided as feedback information for calculating toner consumption, thereby detecting a toner empty condition.
Life reset Reset when the Toner Cartridge is replaced with a new one.
Toner Cartridge
E-2
2.
(1)
REPLACEMENT/CLEANING OF PARTS
Cleaning of the Paper Take-Up Roll
1. Remove the Imaging Cartridge. E-5 NOTE · The Imaging Cartridge is the Drum Cartridge, to which the Toner Cartridge is mounted. 2. Using a soft cloth, wipe the surface of the Paper Take-Up Roll clean of dirt.
4136E001AB
(2)
Replacement of the Paper Take-Up Roll
1. Remove the Imaging Cartridge. E-5 2. Remove the Paper Take-Up Roll.
4136E003AB
E-3
(3)
Replacement of the Image Transfer Roller
1. Remove the Imaging Cartridge. E-5 2. Remove the Fusing Unit. E-8 3. Place the levers of the bushings (white) on the right and left ends of the Image Transfer Roller toward this side and remove the Image Transfer Roller from the Image Transfer Roller holder.
4136E018AA
4. Pull out the bushings on the right and left ends, and the gear, from the Image Transfer Roller removed from its holder. Install the bushings and the gear to the new Image Transfer Roller. NOTES · Do not touch, or dirty with chemicals or toner, the surface of the Image Transfer Roller, as indentations in and dirt on the surface of the Image Transfer Roller adversely affect the quality of the printed image. · When handling the Image Transfer Roller, hold onto the shaft and bushings of the roller. · Do not place a new Image Transfer Roller directly on the floor or other surface.
4136E019AA
5. Insert the new Image Transfer Roller into the Image Transfer Roller holder and place the levers of the bushings into the original upward positions.
4136E020AB
E-4
3.
(1)
REPLACEMENT OF UNITS
Replacement of the Toner Cartridge
1. Open the Front Door.
4136E005AA
2. Remove the Imaging Cartridge.
4