magicolor 2300 Series
1750058-001C
Service Manual
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 equip-
ment described herein without notice. Considerable effort has been made to
ensure that this manual is free of inaccuracies and omissions. However,
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.
tained 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.
MINOLTA-QMS, Inc. assumes no responsibility for, or liability for, errors con-
MINOLTA-QMS,
2
CONTENTS
3
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
5
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
6
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
7
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.
11
• 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.
12
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.
13
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.
14
1-3. Used Batteries Precautions
ALL Areas
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
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
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
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
Paristo voi räjähtää, jos se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin.
Hävitä käytetty paristo valmistajan ohjeiden mukaisesti.
CAUTION
VORSICHT!
ATT ENTI ON
ADVARSEL!
VAR OlTU S
Explosionsfara vid felaktigt batteribyte.
Använd samma batterityp eller en ekvivalent typ som rekommenderas av apparattillverkaren.
Kassera använt batteri enligt fabrikantens instruktion.
Norway
Eksplosjonsfare ved feilaktig skifte av batteri.
Benytt samme batteritype eller en tilsvarende type anbefalt av apparatfabrikanten.
Brukte batterier kasseres i henhold til fabrikantens instruksjoner.
VARNING
ADVARSEL
15
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.
16
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.
17
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.
18
1-6. Safety information
(1) 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(*) 4.68 µW
Wavelength 770-795 nm
*: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.
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.
19
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.
.
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 5 mW
Wavelength 770-795 nm
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 5 mW
Wavelength 770-795 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 5 mW
bølgelængden 770-795 nm
20
Finland, Sweden
LUOKAN 1 LASERLAITE
KLASS 1 LASER APPARAT
VAR OITU S!
Laitteen käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saattaa altistaa
käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälle lasersäteilylle.
puolijohdelaser
Laserdiodin suurin teho 5 mW
aallonpituus 770-795 nm
VAR NING !
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 5 mW
våglängden 770-795 nm
VAR O!
Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättomälle lasersäteilylle. Älä
katso säteeseen.
VAR NING !
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 5 mW
bølgelengde 770-795 nm
21
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.
22
C4131s005AA
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.
23
24
GENERAL
25
1. Product Specifications
(1) Printer
Type Desktop full-color laser beam printer
Printing method Electrophotographic (two-part imaging cartridge)
Exposure method Laser diode and polygon mirror scanning
Print resolution 600 dpi (dots/inch)
Media sizes A5T, B5T, A4, Letter, Legal
Plain paper (16-24 lb bond, 60-90 g/m2), recycled paper, overhead
Media types
First-page print time
Multi-page print speed
Warm-up time
System speed 101.78 mm/sec.
Paper feed-in method
Paper feed-out method Face-down (tray capacity: 200 sheets)
Drum-charging method Comb electrode scorotron charger
Developing method Single-element developing system
Image transfer method Transport image transfer system
PC drum OPC (Organic Photoconductor)
PC drum cleaning method Blade system
Paper separation method Curvature separation + charge-neutralizing system
Fusing method Heated roller fusing system
Dimensions
Weight 55.1 lbs(25 kg) (without drum cartridge and toner cartridges)
Weight (consumables) 62.4 lbs (28.3 kg) (including drum cartridge and toner cartridges)
Rated power supply voltage 100 V / 120V / 220-240 V
Frequency 50/60 Hz
Maximum power consumption
Operating noise
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)
1-way system (maximum 2-way); Expandable to 2-way system by
installing the optional 2nd paper cassette
Manual feed tray (200 sheets of plain paper)
2nd paper cassette (500 sheets of plain paper) (2300 DL & 2350
only)
14.02 in.(356 mm) (W) x 19.69 in.(500 mm) (D) x 15.43 in. (392 mm)
(H)
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)
27
Operating environment
Drum cartridge life 45,000 pages (black/white ratio=5%)
Toner cartridge life (purchased
separately)
Toner cartridge life (enclosed
cartridge)
Options
50-95° F (10-35°C)
15 - 85%
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)
Name Second paper cassette (2300 DL & 2350 only)
Paper
Media sizes A4, Letter
Paper cassette capacity 500 sheets
Paper separation mechanism Paper separator system
Power source Supplied by main unit (DC24 V ±10%)
Drive source Supplied by main unit
Dimensions
Weight 11.7 lbs. (5.3 kg)
Plain paper (16 to 24 lbs.; 60-90 g/m2), recycled paper (16 to 24 lbs.,
60-90 g/m2)
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)
(3) Duplex unit
Name Duplex unit
Paper Plain paper (16 to 24 lbs.; 60-90 g/m2)
Media sizes A4, Letter
Color printing: 2.0 pages/min. (A4- or Letter-size pages)
Print speed (double-sided printing)
Document feeding capacity
Paper transfer baseline Center baseline
Power source Supplied by main unit (DC24 V ±10%)
Drive source Supplied by main unit
Dimensions
Weight 4.4 lbs. (2.0 kg)
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)
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)
28
(4) Controller magicolor 2300DL (PWB-P)
CPU D8405 200MHz
Memory configuration
Standard I/F
Network protocol
Network print service
Resolution 600 x 600 dpi, 1200 x 600 dpi, 2400 x 600 dpi
Printer Driver
Compatible clients:
PC IBM PC or compatible
CPU CPU clock of 300 MHz or more recommended
Hard disk free space
RAM
Browser
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)
OS: Windows 95/98/Me, Windows NT4.0, Windows 2000, Windows XP
Minimum 36 MB
20 MB: Printer drive/Status display
16 MB: Image processing area
At least 16 MB (Windows 95/98/NT4.0)
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
29
(5) Controller magicolor 2350 (PWB-P)
CPU
Memory configuration Boot ROM (512KB); 12MB Flash ROM (supports up to 24MB)
Standard I/F Ethernet (10/100BASE-TX, RJ-45)
Optional I/F Dongle (803.11b & Bluetooth) via parallel
Optional Hard Disk
Resident Emulations
Fonts 137 PostScript fonts, 90 PCL fonts (80 scalable & 10 bitmap)
System Software
Resolution 600 x 600 dpi, 1200 x 600 dpi, 2400 x 600 dpi
Printer Driver
IBM Mercury, Power PC 405, 200 Mhz processor core SOC,
system bus speed of 100 Mhz
128 MB standard, upgreadeable to 384 MB via 1 DIMM slot
IEEE1284 (Compatible/Nibble/ECP/EPP)
USB 1.1
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
Upgradable via FLASH at initial release, later upgradeable via
Mask ROM.
OS: Windows 95/98/Me, Windows NT4.0, Windows 2000, Windows XP
(6) Controller magicolor 2300W (PWB-P)
CPU N1-chip (Naltec original ASIC)
Memory configuration 64 KB (In ASIC)
Standard RAM: 32MB
Standard I/F IEEE1284 (Compatible/Nibble/ECP)
USB Type B connector
Resolution 600 x 600 dpi, 1200 x 600 dpi
Printer Driver OS: Windows 95/98/Me, Windows 2000, Windows XP
Compatible clients:
PC IBM PC or compatible
CPU CPU clock of 300 MHz or more recommended
Hard disk free space 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. Installation Precautions
2-1. 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
•
23.2 in (590 mm)
15.4 in. (390 mm)
13.4 in. (340 mm)
11.8 in.
(300 mm)
27.8 in. (705 mm)
5.9 in.
(150 mm)
27.6 in.
(700 mm)
19.7 in.
(500 mm)
4131o103AA
C4131o105AA
32
3. Operation Precautions
3-1. 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
• Humidity: 15-85% Rh
• Temperature fluctuation:
• 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
• Frequency fluctuation
• 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.
±10% of the specified voltage
±3 Hz%
°C)
±18° F (10 °C) per hour
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 accesso-
ries 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
2
3
4131o001AA
4
1
7
1. Manual feed tray
2. Power switch
3. Image transfer belt unit
4. Waste toner bottle
5. Drum cartridge
6. Toner cartridge
7. Right-side door release lever
8. Duplex unit (optional)
4131o106AA
4131g002AA
5
4131g003AA
6
8
4131g004AA
4131o107AA
34
MECHANICAL/
ELECTRICAL
35
1. CROSS-SECTIONAL VIEW
3
4
5
2
1
C
1. Toner Cartridge Rack
2. PC Drum
3. Image Transfer Belt Unit
4. Exit Roller
5. Fusing Roller
6. Second Image Transfer
Roller
7. Synchronizing Roller
M
6
7
K
Y
8
9
10
4131M001AA
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. ELECTRICAL COMPONENTS LAYOUT
(1) Printer
29
28
30
27
26
25
31
24
32
33
23
34
22
21
35
20
19
36
18
17
37
16
38
15
1
2
3
4
14
4131D002AA
5
6
7
8
9
10
11
12
13
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
Symbol Item Explanation
U18 CPU Destiny D8405 200 MHz controller control CPU
U26, U27,
U28, U29
CON4 Expansion slot
CN1 Connector 10/100Base-T Ethernet RJ45 connector
U3 IC Ethernet Controller
CN3 Connector USB connector
U12 IC USB Controller
CN5 Connector IEEE1284 Parallel Connector
U21 IC Parallel buffer
U6 IC System data storage ROM (4 MB)
U5 ASIC JBIG compressed image processing
CON1 Connector Controller Panel expansion connector
CN2 Connector Engine Controller connector
SW1 Dip SW
CR7 LED For 5 V voltage check
CR10 LED For 3.3 V voltage check
CN6 Connector Video signal connector
SDRAM 8-MB memory chip, a total of 32 MB standard memory
68-pin SD-RAM add-on memory (128, 256 MB, PC100/
133 CL3)
1. Not Used (Always OFF)
2. Not Used (Always OFF)
3. ON: A4, OFF: Letter
4. ON: A4, OFF: Letter
4131M039AA
40
(3) 2350 Controller
U4
TP2
J1
Symbol Item Explanation
U13 CPU 200 MHz Power PC 405 CPU
U3, U6, U10,
U12, U16,
U19, U24, U30
J7 Expansion slot
J15 Connector 10/100Base-T Ethernet RJ45 connector
J16 Connector IEEE1284 Parallel Connector
J17 Connector USB connector
JP10 Jumper DIAG test point
J2 Jumper DEBUG test point
J1 Connector Engine I/F
TP2 Test Point 5V
J12 Connector PCI Daughterboard Card Bus
J13 Connector PCI IDE Hard Drive Card Bus
U9 IC FPGA1
U15 IC FPGA PROM
U17 IC DSFL PROM
J6 Connector Controller Panel connector
J4 Connector Printhead Video signal connector
U4 Socket Empty PROM Socket
J6
U15
U9
J2
J4
J7
U3
SDRAM A total of 128 MB standard memory
U10 U12 U16 U19 U24 U30
U6
68-pin SD-RAM add-on memory (128, 256 MB, PC100/
133 CL3)
U13
U17
J12
J13
JP10
J16
J15
J17
41
(4) 2300W Controller
Controller Panel Interface Connector
Engine Controller connector
Controller
ASIC
Demonstration ROM Board Connector
Image memory
Image memory
4131M554AA
Parallel/USB Interface Connector
42
3. OPERATING SEQUENCE
✽ Conditions: A4 plain paper, full-color printing
5
6
PressurePressure
Retraction
Retraction
34
1
2
Print Request
1
Polygon Motor (M3)
Image Transf er Belt
Positioning Sensor (PC5)
Main Motor (M1)
FD Scanning Signal (/TOD)
Rack Motor (M2)
PC Drum Charge Output
Synchronizing Roller
Synchronizing Roller Sensor (PC2)
Exposure Output
Solenoid (SL3)
Transport Roller Solenoid (SL2)
First Image Transfer Output
Pressure
Retraction
Second Image Transfer Output
Second Image Transfer Roller
Pressure Contact Solenoid (SL5)
Belt Cleaner Separator
Solenoid (SL4)
Manual Feed Paper
Take-Up Solenoid (SL1)
4131M043AA
4. C development
5. Bk development
6. Paper trailing edge voltage
illumination
1. Outside image area
2. Y development
3. M development
43
4. IMAGE STABILIZATION CONTROL
• The printer provides the image stabilization control as detailed below to ensure stabilized
print image.
Purpose Control Control (Sensor)
• To stabilize image
density
AIDC control
• 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.
AIDC Sensor (AIDC
detection)
Temperature/Humidity
Sensor
Amount of Toner Sticking
Large Low Small
Small High Great
Intensity of Light
Reflected
Output
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 pat-
tern 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 • Sets the developing bias.
• LED intensity adjustment
control
• Belt surface (on which no
toner sticks) reflection factor
measurement control
• Solid image toner amount
control
• Laser intensity adjustment
control
• γ correction control
(1) Ds correction control
• 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
(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)
γ
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.
• Adjusts the intensity of the LED light.
• Used for corrections for the laser intensity and
rection 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
γ cor-
γ correction control.
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
✽ 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.
• Ds correction control -> LED intensity
adjustment control -> Belt surface reflection factor measurement control -> Solid
A
image toner amount control -> Laser
intensity adjustment control ->
tion control
• Solid image toner amount control ->
B
Laser intensity adjustment control ->
correction control
C
• γ correction control
γ correc-
γ
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
4131m029AA
Temperature Data
Humidity Data
Second Image Transfer Bias
ATVC Control
Master Board (PWB-A)
High Voltage Unit (HV)
47
4-5. ATVC (Auto Transfer Voltage Control
• Adjusts the transfer bias voltage based on the age and cleanliness of the transfer rollers.
Fixed current is output to first
transfer roller
Resistance of first transfer
roller is measured
First transfer voltage is determined
ATV C C o ntro l
Image Transfer Belt is cleaned
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
Second Transfer Roller
Transfer Belt
Drive Roller
48
Fixed Current
First Transfer Roller
Transfer Belt
PC Drum Ground
5. DRUM CARTRIDGE
5-1. 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 Trans-
port 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 con-
stant 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
Drum Holding Shaft
49
PC Drum
4131M044AA
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
50
Charge Bias
4131M045AA
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
Void Image Width: 4 mm
CD Direction: 208 mm
/VIDEO /TOD
80 ms
FD Direction: 345 mm
52
4131M046AA
7. DEVELOPING UNIT
(1) 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
Direction of
Rotation
Developing Roller
Drive Gears
Toner Cartridge
PC Drum
Developing
Roller
4131M047AA
53
4131M048AA
(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. Developing Position
(1) 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
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
° ahead of the
Rack Home Position Sensor (PC4)
Rack Lock Lever
Black Stopping Cutout
Black Position
Detection Cutout
Yellow Stopping Cutout
PC Drum
Magenta Stopping
Cutout
4131M049AA
Cyan Stopping Cutout
55
7-2. Toner Cartridge
(1) Construction
• The Toner Cartridge is constructed as illustrated below.
4
1
23
1. Toper Hopper
2. Toner Agitating Plate
3. Toner Transport Roller
4. Developing Roller
5. PC Drum
5
4131M050AA
6
6. First Regulator Blade
7. Second Regulator Blade
8. Bias Seal
7
4131M051AA
8
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.
1
2
6
7
7
6
5
3
1
4131m010
4
4131M007AA
8
5
4
1. Developing Roller
2. PC Drum
3. First Regulator Blade
4. Second Regulator Blade
5. Regulator Blade Bias
3
4131M008AA
6. Developing Bias
7. Developing Seal Bias
8. Bias Seal
57
(7) Toner Cartridge Installation Detection
U
• Toner Cartridge installation detection is made with the Toner Cartridge Detection Sensor
(PC8) and the Reflector in the Toner Cartridge.
Intensity of
Detection
Method
No Cartridge installed
Cartridge installed
Light Reflected
NO
YES
Reflector
4131M039AA
PC8
Reflector
VCC
CP
GND
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
4131M041AA
Reflector
Toner Cartridge Installed
4131M042AA
59
8. IMAGE TRANSFER
8-1. Image Transfer Belt Unit
(1) Construction
2
1
1. Image Transfer Belt
2. Cleaning Blade
3. Waste Toner Conveying Coil
4. First Image Transfer Roller
(2) Drive Train
1. Main Motor (M1) 2. Drive Roller
3
4
5. Drive Roller
6. Second Image Transfer Roller
1
56
4131M053AA
2
4131M009AA
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
PC Drum
First Image Transfer Bias
4131M054AA
(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 Neutralizer
Charge Neutralizing Bias
(Self Bias)
Second Image Transfer Roller
4131M055AA
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
Pressure Lever
When Retracted
Spring
Second Image Transfer Roller
Pressure Positioning Sensor
Cam
4131M056AA
(6) Second Image Transfer Roller Pressure/Retraction Timing
Pressed Before the paper reaches the Second Image Transfer Roller
Retracted
After the trailing edge of the paper has moved past the Second Image Transfer
Roller
4131M010AA
When Pressed
4131M057AA
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. Image Transfer Belt Cleaning Mechanism
(1) 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
O
• 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
Belt Cleaner Separation Solenoid (SL4)
ON
FF
Pressure
ON
OFF
65
Retraction
*
In color printing
Pressure
4131M030AA
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 by the Waste Toner Conveying Coil.
• The waste toner left on the surface of the Image Transfer Belt is scraped off by the Image
Transfer Belt Cleaning Blade and conveyed by the Waste Toner Conveying Coil.
Cleaning Blade
Waste Toner Conveying Coil
4131M012AA
Waste Toner Bottle
4131M013AA
8-5. Waste Toner Bottle Detection
(1) Waste Toner Bottle Detection
• The Waste Toner Bottle Set Switch (S5) detects whether or not the Waste Toner Bottle is
installed in the printer.
(2) Waste Toner Full Detection
The Waste Toner Full Detecting Sensor (PC6) detects that the Waste Toner Bottle is full of
waste toner.
• A waste toner full condition is detected when waste toner in the Waste Toner Bottle
blocks the sensor.
Waste Toner Full
Detecting Sensor (PC6)
Waste Toner Bottle
Set Switch (S5)
4131M014AA
66
9. FUSING SECTION
9-1. Fusing Unit
(1) Overview
• Toner transferred onto the paper through the image transfer process is permanently fixed
onto the paper.
• The fusing system employed in the printer is a heat roller method, in which the Fusing
Roller heated by a heater lamp is pressed against the Fusing Pressure Roller and, by
feeding the paper between these two rollers, toner is fused onto the paper.
4
3
7
1
5
1. Fusing Roller
2. Fusing Pressure Roller
3. Thermistor (TH1))
4. Thermostat (TS1)
5. Fusing Roller Heater Lamp (H1)
2
6
4131M015AA
6. Fusing Pressure Roller Heater
Lamp (H2)
7. Pressure Spring
67
(2) Drive
• The Fusing Unit is driven by the Main Motor (M1).
Main Motor (M1)
4131M016AA
(3) Fusing Roller Pressure
• The Fusing Roller and the Fusing Pressure Roller are pressed against each other at all
times. They are released for maintenance service or replacement of parts.
• When a paper misfeed occurs in the Fusing Unit, the Fusing Misfeed Clearing Levers are
pulled upward to release pressure between the two rollers.
Fusing Misfeed Clearing Levers
68
4131M017AA
9-2. Fusing Temperature Control
(1) Fusing Temperature Control Circuit
• The resistance of the Thermistor (TH) mounted to the Fusing Roller varies with temperature. The higher the temperature, the smaller the resistance value. The output from the
Thermistor (TH) is applied to the analog port of the CPU.
• When the temperature increases and the resistance of the Thermistor (TH) decreases,
the input voltage to the analog port becomes smaller.
• The CPU monitors the output from the Thermistor and turns ON or OFF the Heater Lamp
as necessary to control the temperature of the Fusing Roller.
• To energize the Fusing Roller Heater Lamp (H1), the CPU turns ON (LOW) the Heater
Remote output signal. This turns ON the triac in the Power Unit, which allows an AC voltage to be applied to the Fusing Roller Heater Lamp (H1) to heat it.
• When the temperature of the Fusing Roller runs inordinately high, the Abnormal Heater
Temperature Detecting Circuit is activated to shut down power to the Fusing Roller
Heater Lamp (H1).
PWB-A (Main Board)
CPU
A/D
Main Switch
AC
Input
H1
H2
Power Unit
Abnormal Heater
Temperature
Detecting Circuit
Heater Remote
On/Off
69
4131M060AA
(2) Fusing Temperature Control
• The temperature control as detailed below is provided by means of the Fusing Roller
Heater Lamp (H1) and the Fusing Pressure Roller Heater Lamp (H2).
• The surface temperature of the Fusing Roller is converted by the Thermistor (TH1) to a
corresponding electrical signal.
1. Warm-up Control
• The temperature during the warm-up cycle is set at 170
°.
• When the temperature of the Fusing Roller reaches this set temperature, both the Fusing
Roller Heater Lamp (H1) and the Fusing Pressure Roller Heater Lamp (H2) are turned
OFF.
2. Temperature Control in Standby State
• The temperature in the standby state is set at 171
°.
3. Temperature Control during Printing (monochrome printing)
• The temperature during printing is set as follows.
Set tempera-
ture
Plain paper
157° 157° 157° 166° 152°
Thick paper
postcards
OHP transparen-
cies
Envelopes Small size*
✽ Small-size paper: Plain paper whose length is 226 mm or less
4. Temperature Control during Printing (color printing)
• The temperature during printing is set as follows.
Plain paper
Set temperature 174° 174° 166° 166° 169°
Thick paper
postcards
OHP transparen-
cies
Envelopes Small size*
✽ Small-size paper: Plain paper whose length is 226 mm or less
180
170
160
Warm-up: approx.
180 sec.
In Standby
70
During Printing
Plain paper (color)
Plain paper (monochrome)
4131M061AA
10. PAPER TAKE-UP SECTION
O
O
10-1. Manual Feed Tray
(1) Paper Take-Up Mechanism
• The Manual Feed Tray consists of a Paper Take-Up Roll, Paper Lifting Plate, and the
Manual Feed Paper Take-Up Solenoid (SL1).
• When the Manual Feed Paper Take-Up Solenoid (SL1) is energized, the cam turns.
At the same time, the Paper Lifting Plate raises the tray and the paper on the tray is
taken up by the Paper Take-Up Roll and fed into the printer.
(2) Paper Empty Detection
• There is the Manual Feed Paper Empty Sensor (PC1) provided on the underside of the
Manual Feed Tray. It detects a paper-empty condition of the Manual Feed Tray.
• When there is paper, the actuator is lowered to unblock the sensor.
• When there is no paper, the actuator is raised to block the sensor.
Manual Feed Paper Take-Up Solenoid (SL1)
4131M019AA
Manual Feed Paper Empty Sensor (PC1)
Main Motor
ON
FF
Image Transfer Belt
Positioning Sensor
Manual Feed Paper
Take-Up Solenoid
(SL1)
ON
FF
YMC K
4131m031AA
In color printing
*
71
10-2. Lower Feeder Unit (Option)
(1) Paper Take-Up Mechanism
• Since there is no drive motor installed, the drive for paper take-up and transport (supplied
from M1) is transmitted through a drive coupling gear from the printer.
• The same paper take-up mechanism is employed as that of the Multi-Purpose Tray,
except that paper separator fingers are used, instead of the separator roll with a torque
limiter, for paper separation.
• The Lower Feeder Take-Up Solenoid (SL7) is controlled from the printer through the
Lower Feeder Control Board (PWB-A) of the Lower Feeder Unit.
(2) Paper Empty Detection
• A paper-empty condition is detected by the Lower Feeder Paper Empty Sensor (PC16).
• When there is paper, the actuator is raised to block the sensor.
• When there is no paper, the actuator is lowered to unblock the sensor.
Lower Feeder Take-Up
Solenoid (SL7)
Lower Feeder Paper Empty Sensor (PC16)
Lower Feeder Paper
Near-Empty Sensor (PC14)
4131M020AA
(3) Lower Feeder Paper Near-Empty Sensor (PC14)
• A paper near-empty condition is detected by the Lower Feeder Paper Near-Empty Sensor.
• A paper near-empty condition is equivalent to the following number of sheets of paper left
in the tray.
Specifications
Near-empty detection 50 +/- 25 sheets
72
11. OTHER MECHANISMS
11-1. Duplex Unit (Option)
(1) Drive
• The drive for the Duplex Unit works as follows. The paper having a printed image on its
one side is temporarily fed toward the Exit Tray and, as soon as the trailing edge of the
paper moves past the guide plate before the Exit Roller, the Exit Roller is turned backward so that the paper is fed into the Duplex Unit.
• The drive for the Exit Roller is disconnected from the printer when the Duplex Unit is
mounted on the printer and, instead, it is provided by the Duplex Unit Turnover Motor of
the Duplex Unit.
• The Transport Rollers of the Duplex Unit are driven by the Duplex Unit Transport Motor.
• The paper is transported to the printer by the Transport Rollers.
Duplex Unit Turnover Motor (M8)
Duplex Unit Transport Motor (M7)
Transport Rollers
Duplex Unit Transport Sensor (PC17)
4131M021AA
73
(2) Paper Feeding Method
1. Operations in 2-sided printing with a single sheet of paper resident in, and circulated
through, the system
(1) Paper is taken up and fed in and the image on
page 2 of the print job is printed.
2
4657M521AA
(2) The paper is temporarily fed toward the exit
2
4657M522AA
section and, immediately before the paper
leaves the Exit Roller, the direction of rotation
of the Exit Roller is switched.
(3) The paper is transported into the Duplex Unit.
(4) The paper in the Duplex Unit is temporarily
stopped at the Duplex paper take-up position.
2
4657M523AA
74
(5) The image on page 1 of the print job is printed
on the paper that is taken up from the Duplex
Unit.
1 2
4657M524AA
✽ Steps from (2) to (6) are hereafter repeated.
(6) The first paper is fed out of the printer.
75
2. Operations in 2-sided printing with two sheets of paper resident in, and circulated
through, the system:
(1) The first sheet of paper is taken up and fed in
and the image on page 2 of the print job is
printed.
2
4657M515AA
(2) The first sheet of paper is temporarily fed
toward the exit section and, immediately before
2
4657M516AA
4
2
the paper leaves the Exit Roller, the direction of
rotation of the Exit Roller is switched.
(3) The first sheet of paper is transported into the
Duplex Unit.
(4) At the same time, the second sheet of paper is
taken up and fed in.
(5) The first sheet of paper in the Duplex Unit is
temporarily stopped at the Duplex paper takeup position.
(6) The image on page 4 of the print job is printed
on the second sheet of paper.
4657M517AA
(7) The first sheet of paper is taken up from the
4
2
4657M518AA
Duplex Unit.
(8) The second sheet of paper is temporarily fed
toward the Exit Tray and, immediately before
the paper leaves the Exit Roller, the direction of
rotation of the Exit Roller is switched.
76
(9) The image on page 1 of the print job is printed
4
on the first sheet of paper.
(10) The second sheet of paper is transported into
the Duplex Unit.
1 2
4657M519AA
(11) At the same time that the first sheet of paper is
2
1
fed out of the printer, the image on page 3 is
printed on the second sheet of paper.
43
4657M526AA
4
3
2
1
(12) At the same time that the second sheet of
paper is fed out of the printer, the third sheet of
paper is taken up and fed in and the image on
page 6 is printed on the third sheet of paper.
3
4657M527AA
✽ Steps from (2) to (12) are hereafter repeated.
77
3. Operations in 2-sided printing with two sheets of paper resident in the system and with
a new sheet of paper taken up when a printed page with images printed on both sides is
fed out
(1) The first sheet of paper is taken up and fed in
2
4
4657M528AA
4
and the image on page 2 of the print job is
printed.
(2) The first sheet of paper is temporarily fed
toward the exit section and, immediately before
the paper leaves the Exit Roller, the direction of
rotation of the Exit Roller is switched.
(3) The first of paper is fed in the duplex unit.
(4) At the same time that the second sheet of
paper is taken up and page4 is printed.
(5) The first sheet of paper is stopped at take-up
position.
(6) The second sheet of paper is fed in exit sec-
tion.
2
4657M529AA
4
21
(7) The image on page 1 of the print job is printed
on the first sheet of paper.
(8) The second sheet of paper is immediately
before the paper leaves the Exit Roller, the
direction of rotation of the Exit Roller is
switched.
(9) The second sheet of paper fed in the duplex
unit.
4657M530AA
78
2
1
(10) The first sheet of paper fed out in exit tray.
(11) At the same time the third sheet of paper is
taken up and fed in.
(12) The second of sheet of paper stopped at take-
up position.
4
6
4657M531AA
(13) The image on page 3 is printed on the second
6
2
1
sheet of paper.
(14) The third sheet of paper is immediately before
the paper leaves the Exit Roller the direction of
rotation of the Exit Roller is switched.
(15) The third sheet of paper fed in the Duplex Unit.
43
4657M532AA
(16) The second sheet of paper fed out in Exit Tray.
4
3
2
1
(17) At the same time the fourth sheet of paper is
taken up and fed in.
(18) The third sheet of paper stopped at take-up
position.
8
✽ Steps from (13) to (18) are hereafter repeated.
6
4657M532AA
79
80
MAINTENANCE & DISAS-
SEMBLY/ASSEMBLY
81
19971
1. Disassembly/Assembly Precautions
1-1. Precautions for disassembly and assembly
• Unplug the power cord from the electrical outlet before servicing the printer.
• Reassemble the unit in reverse order of disassembly unless otherwise instructed.
• If it is necessary to run the printer with its covers removed, use extreme care to avoid
catching your fingers or clothing in rotating parts such as gears, rollers, or motors.
• Never touch the terminals of electrical components or high-voltage components, such as
the power unit or the high-voltage unit.
• Be careful when working around the fusing unit because it will be hot long after the
printer is turned off. Wait until the fuser has cooled before disassembly.
• Turn off the printer before plugging or unplugging a power cord. Never plug or unplug a
power cord that is energized. When plugging or unplugging connectors, be sure to hold
the plug. Never pull on the cord or you may break the wires connecting the plug to the
power cord.
• Use only fuses of the specified rating.
• To ensure electrical conduction, attach the ground wire. In addition, be sure to use the
screws with toothed washers as instructed.
1-2. Parts that must not be touched
Do not remove, disassemble, or adjust any of the parts listed below:
• Print head unit (disassembly or adjustment)
• Components with mounting screws that are painted red.
1-3. Precautions for transporting or storing PWBs
Observe the following precautions when handling circuit boards.
• During transportation or storage, circuit boards must be placed in anti-static bags and
must not be unnecessarily removed. Do not wrap the circuit boards in plastic or paper
bags.
• Do not store or place circuit boards in a location exposed to direct sunlight.
• When it becomes necessary to remove a circuit board from the anti-static bag, do not
place it where it is easily be affected to static electricity, such as on carpet, plastic, or in
vinyl bags.
1-4. Precautions for replacing PWBs
• Generally, the PWB or the assembly should be replaced.
• When unplugging connectors from the circuit board, ensure the power is off.
• When removing a circuit board from its anti-static bag, or when replacing the circuit
board, hold the board by its edges, making sure not to touch pins of the ICs or the printed
pattern.
1-5. Precautions for inspecting PWBs
• Do not check ICs directly with a multimeter; use connectors on the circuit board.
• Never create a closed circuit across IC pins with a metal tool.
• When it is necessary to touch ICs and other electrical components on the circuit board,
be sure to first ground yourself.
83
1-6. Precautions for transporting or storing the OPC drum car-
tridge
• Use the specified carton when transporting or storing the OPC drum (magicolor 2350)/
PC drum (magicolor 2300 dl).
• Do not store or place an OPC drum cartridge in a location where it will be exposed to
direct sunlight. The storage temperature should be between -4°F(-20
(+40
°C).
°C) to 104°F
1-7. Precautions for handling the OPC drum cartridge
• The OPC drum cartridge is extremely sensitive to light shock. It takes a long time to
recover the drum’s photosensitivity. Never leave the protective cover open or expose the
OPC drum cartridge to direct sunlight for long periods of time.
• Do not contaminate the surface of the OPC drum cartridge with fingerprints, oil or chemicals.
• Do not scratch the surface of the OPC drum cartridge.
1-8. Red painted Screws
Purpose of Application of Red Paint
Red painted screws show that the assembly or unit secured can only be adjusted or set at
the factory and should not be adjusted, set, or removed in the field.
Note that when two or more screws are used on the part in questions, only one representative screw may be marked with red paint.
1-9. Variable Resistors on Board
Do not turn the variable resistors on boards for which no adjusting instructions are given.
84
2. Maintenance Schedule
Maintenance Cycle Near
PM Parts
Paper Take-Up Roller
Clean Replace
When paper
take-up failure
occurs
Print
Ref. Page
in This
Manual
Life
Life
Detec-
Detec-
tion
200K Prints NO NO NO 89
tion
Inhibited
Separator Roller Assy
Paper Take-Up Section
Paper Dust Roller
Transport Roller
Transfer Section
2nd Image Transfer
Roller
Image Transfer Belt Unit -
Waste Toner Bottle - 25K Images YES YES YES 91
éþ
Around waste toner
Image Transfer Section
collecting port
Toner Cartridge C/M/Y/K -
OPC Drum Cartridge -
Developing Section
Laser Lens Cover
PH Section
When paper
take-up failure
occurs
When paper
transport fail-
ure occurs
When paper
transport fail-
ure occurs
- 120K Prints NO
When the
Waste Toner
Bottle is
removed
When an
image prob-
lem occurs
200K Prints NO NO NO 89
210K Prints
B&W
52.5K Prints
Color
4.5K Prints
(High Cap)
1.5K Prints
(Standard)
45K Images -
B&W
11. 25K
Images -
Color
-NONONO90
-NONONO91
NO NO
NO NO NO
-NONONO91
YES YES NO 94
YES YES NO 93
-NONONO92
92
94
Fusing Section
Fusing Unit - 120K Prints NO NO NO 95
85
NOTES
✽
Replace the Paper Take-Up Roll and Separator Roll at the same time.
✽Replace the Second Image Transfer Roller and Fusing Unit at the same time.
✽When the Fusing Unit has been replaced, reset the counter on the control panel. (See CONTROL
PANEL/SERVICE MODE DESCRIPTIONS.)
✽When the Image Transfer Belt Unit and Second Image Transfer Roller have been replaced, reset the
counter on the control panel. (See CONTROL PANEL/SERVICE MODE DESCRIPTIONS.)
Every one color developed in one count up.
86
2-1. Guideline for Life Specifications Values by Unit
Life Value Near Life Value Life Value
TC with machine (1.5K pages)
• When reach the TC con-
Toner Car-
tridge
4.5K Pages
(C/W)
sumption ratio in 89%.
After TV (4.5K pages)
When reach the TC consumption
ratio in 100%.
• When reach the TC consumption ratio in 96%.
OPC Drum
Cartridge
Waste Toner
Bottle
Image Trans-
fer Belt Unit
2nd Image
Transfer Roller
45K
images
25K
images
210K
images
120K
Pages
120K
Pages
When reach the DC consumption ratio in 96%.
When detect near life information
from Main unit.(Master Board)
--Fusing Unit
When reach the DC consumption
ratio in 100%.
Print out the 200 images (monochrome) or 50 images(color),
after detect the near life.
2-2. Detail of Each Unit Life
Kind of
Paper
Toner Car-
tridge
OPC Drum
Cartridge
Waste Toner
Bottle
Waste Toner
Bottle
Fusing Unit Plain Paper
2nd Image
Transfer Roller
Plain Paper C/W ratio 5% less: 1.5K images - 4.5K images *1
Special
Paper
Plain Paper
Special
Paper
Plain Paper
Special
Paper
Plain Paper
Plain Paper
C/W ratio 5% less: 1.0K images - 4.5K images *1
Standard Life Specification Value: monochrome 13.5K prints, color
4.5K prints (TOTAL 18K prints)
Continuous: monochrome 15K prints, color 7.5K print
C/W ratio 5% Prints, Waste toner capacity:
monochrome 25K images, color 6.25K images *1
Standard Life Specification Value: monochrome 60K prints, color
20K prints (TOTAL 80K prints)
Standard Life Specification Value: monochrome 90K prints, color
30K prints (TOTAL 120K prints)
Detail of Life
✽ 1: The Life Specification Value represents the number of prints made or figures equiva-
lent to it when given conditions are met. They can be more or less depending on the
printer operating conditions of each individual user.
NOTES
• The Life Value represents the number of printed pages or a figure equivalent to it when
given conditions (shown below) are met. It can be more or less depending on the operating conditions of the machine of each individual user.
• One color is one image. One printed page produced in color is counted four images.
87
Conditions for Life Specifications Values
magicolor 2300DL, 2350, 2300W
Print conditions
Paper Size
Color Ratio
Density
Monochrome: producing three printed pages continuously; color:
making two printed pages continuously
C/W(Coverage/White) ratio = 5% in each color
A4C or Letter C
Monochrome : Color = 3 : 1
88
3. Maintenance And Cleaning
(1) Cleaning of the Paper Take-Up Roller
1. Open the right-side door.
2. Using a soft cloth dampened with alcohol, wipe
the Paper Take-Up Roll clean of dirt.
C4131o073AB
(2) Replacement the Paper Take-up Roller
1. Remove the right-side door.
2. Remove the knob, and then replace the Paper
Tak e - u p R ol l .
4131D058AB
3. Cleaning of the Paper Separator Roll
4. Remove the right-side door.
5. Remove two screws and the Paper Separator
Roll Mounting Assy.
4131D058AC
4658D006AA
6. Using a soft cloth dampened with alcohol, wipe
the Paper Separator Roll clean of dirt.
89
(3) Replacement of the Paper Separating Roller Assy
1. Remove the right-side door.
2. Remove two screws and the Paper Separator
Roll Mounting Assy.
4131D058AC
3. Take off the rubber stopper, shaft, spring, and
guide plate to remove the Paper Separator Roll
fixing bracket assy.
4658D003AA
4. Snap off one E-ring and the Paper Separator Roll
Assy.
5. Remove the Paper Separator Roll.
6. To reinstall, reverse the order of removal.
4658D004AA
(4) Cleaning of the Paper Dust Roller
1. Remove the Transport Unit.
2. Using a soft cloth dampened with alcohol, wipe
4131D510AA
the Paper Dust Roller Roll clean of dirt.
90
(5) Cleaning of the Transport Roller
1. Open the Right-side Door.
2. Using a soft cloth dampened with alcohol, wipe
the Transport Roller clean of dirt.
C4131o073AC
(6) Replacement of the Waste Tonner Bottle
1. Open the Front Door.
2. Hold onto the handle of the Waste Toner Bottle
and, while slightly pulling the bottle to the front,
pull it upward.
C4131o049AA
3. Mount the cap to the waste toner collecting port.
NOTE
Discard the Waste Toner Bottle according to the
applicable local regulation.
4. To reinstall, reverse the order of removal.
C4131o041AA
(7) Cleaning of the Areas around Waste Toner Collections Port
1. Open the Front Door.
2. Remove the Waste Toner Bottle.
3. Wipe the areas around the waste toner collecting
port clean of dirt using a soft cloth dampened with
alcohol.
C4131o040AA
91
(8) Cleaning of the Laser Lens Cover
1. Open the Front Door.
2. Remove the Waste Toner Bottle.
3. Withdraw the Laser Lens Cover.
4. Wipe the lens of the Laser Lens Cover clean of
dirt using a soft cloth dampened with alcohol.
C4131o043AA
(9) Replacement of the Second Image Transfer Roller
1. Remove the Right-side Door.
2. While pulling the bushings (white) at the front and
rear ends of the 2nd Image Transfer Roller to the
rear and to the front, respectively, place them
down to the right. Then, remove the 2nd Image
Transfer Roller from the 2nd Image Transfer
Roller Holder.
4131D004AA
3. To reinstall, reverse the order of removal.
4. Select functions as follows: Engine/Service ->
Power On Test. Then, execute ATVC.
92
4. Replacement of the Units
(1) Replacement of the OPC Drum Cartridge
1. Open the Front Door.
2. Remove the Waste Toner Bottle.
3. Lower the unlock lever and remove the Drum
Cartridge.
C4131o027AA
4. Reinstall the new Drum Cartridge.
C4131o030AA
5. Pull the protective sheet of the Drum Cartridge to
the front and remove it.
6. Raise the unlock lever.
C4131o031AA
93
(2) Replacement of the Image Transfer Belt Unit
1. Open the Front Door.
2. Remove the Waste Tonner Bottle.
3. Remove the Drum Cartridge.
4. Remove two screws and the Image Transfer Belt
Unit.
NOTE
When replacing the Image Transfer Belt Unit, be sure
to remove the packing materials.
Do not touch the transfer belt with bare hands.
5. To reinstall the belt unit, reverse the order of
removal.
6. Select functions as follows: Service -> Service/
Service Person -> Reset Counter/Fuser Unit.
Then, clear the counter.
4131D061AA
(3) Replacement of the Toner Cartridge
1. Open the Front Door.
2. Remove the Waste Tonner Bottle.
3. Remove the Drum Cartridge.
NOTE
Discard the Toner Cartridge according to the applicable local regulation. Do not throw the Toner Cartridge into an open flame.
C4131o018AA
C4131o021AA
4. Remove the packing materials and install the
Toner Cartridge.
5. Enter the capacity of the Toner Cartridge just
installed through the control panel.
E.g.: If a Yellow Toner Cartridge has been
replaced (4.5 K)
“Menu/Engine -> Replace Toner -> Yellow ->
High”
94
(4) Replacement of the Fusing Unit
1. Remove the Top Front Cover.
2. Remove the Top Cover.
3. Open the Right-side Door.
4. Remove two screws and the Fusing Unit Cover.
4131D032AA
5. Unplug the connector from the Power Unit and
6. Remove the Fusing Unit from the machine (two
7. To reinstall the Fusing Unit, reverse the order of
8. Select functions as follows: Service -> Service/
4131D033AA
remove the harness from the cord holder.
screws and two connectors).
removal.
Service Person -> Reset Counter/Fuser Unit.
Then, clear the counter.
95
4-1. Disassembly Procedures
(1) Doors, Covers, And Exterior Parts:
Identification And Removal Procedures
2
1
5
8
6
3
4
7
9
96
No. Name Removal Procedure
1 Top Front Cover
2Top Cover
3 Right-side Rear Cover
4 Right-side Door Cover Remove two screws and the Right-side Door Cover.
5 Front Door
6 Rear Cover
Controller Board Pro-
7
8 Left-side Cover
9 Front Cover
tective Cover
Open the Front Door and Right Door. -> Remove two screws and the
Top Front Cover.
Open the Front Door and Right Door. -> Remove the Front Upper
Cover. -> Remove five screws and the Top Cover.
Remove the Controller Protective Cover. -> Remove the Rear Cover. > Remove two screws and the Right-side Rear Cover.
Open the Right Door. -> Remove the Top Front Cover. -> Remove the
Top Cover. -> Remove the Front Door.
Remove the Controller Board Protective Cover. -> Remove eight
screws and the Rear Cover.
Loosen nine screws, remove two screws, and remove the Controller
Board Protective Cover.
Open the Right Door. -> Remove the Top Front Cover. -> Remove the
Top Cover. -> Remove three screws and the Left-side Cover.
Open the Right Door. -> Remove the Top Front Cover. -> Remove the
Top Cover. -> Remove the Front Door. -> Remove nine screws and the
Front Cover.
97
4-2. Pre-disassembly preparation
Before disassembling the machine, the following units need to be removed.
• Waste toner bottle
• OPC drum cartridge
• Toner cartridges (4 colors)
• Image transfer belt unit
1. Open the front door.
2. Remove the waste toner bottle.
4131o023AA
3. Remove the OPC drum cartridge.
4131o027AA
4131D061AA, 4131D062AA
4. Remove the image transfer belt unit. (2 screws)
Note
When replacing the image transfer belt unit, be
sure to remove the packing material.
Do not touch the image transfer belt with your
bare hands.
98
4131o017AA
5. Remove all toner cartridges.
(1) magicolor 2350 procedures:
a)From the display, select the menu “Quality”.
b)Select “Toner”, then “Replace”
c)Select each toner color of the cartridge to be
removed, and then press the Select key to
move the cartridge to the removal position.
(2) magicolor 2300 DL procedures
a)From the display, select the menu “Engine”.
b)Select “Replace Toner”.
c)Select each color toner cartridge from this
menu to remove it.
(3) magicolor 2300W procedures
a)Open the Status Display from the connected
PC.
b)From the Printer tab choose Toner Replace...
c)Select each color toner and follow the proce-
dures to replace.
(4) Manual removal procedures
Caution:
Rotate the carousel carefully to prevent injury to your
fingers.
a)Press in the toner carousel latch and carefully
turn the carousel until the next cartridge is
positioned for removal. Remove the toner car-
tridge.
b)Repeat step b until all toners have been
removed.
4131D003AA
4131D063AA
1 Toner cartridge
2 OPC drum cartridge
3
4131D064AA
3 Waste toner bottle
4 Image transfer belt unit
99
2
1
4
4-3. Removal Of Circuit Boards And Other Electrical Compo-
nents
NOTES
• When removing a circuit board or other electrical component, refer to “Handling of
PWBs” and follow the corresponding removal procedures.
• The removal procedures given in the following omit the removal of connectors and
screws securing the circuit board support or circuit board.
• Where it is absolutely necessary to touch the ICs and other electrical components on the
board, be sure to ground your body.
PWB-P
Symbol Name Removal Procedure
PWB-A Master Board 101
PWB-P
PU Power Unit 102
HV High Voltage Unit 103
PWB-A
PWB-A
PWB-A
HV
Controller Control
Board
Lower Feeder Control
Board
Duplex Unit Control
Board
PU
PWB-A
PWB-A
102
104
105
100
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