Minolta mc7300 Service Manual
17500XX-001
1750061-001A
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 © 2003 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
1. SAFETY PRECAUTIONS FOR INSPECTION AND SERVICE
• When performing inspection and service procedures, observe the following precautions
to prevent accidents and ensure utmost safety.
✽ Depending on the model, some of the precautions given in the following do not apply.
• Different markings are used to denote specific meanings as detailed below.
WARNING
• Indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.
CAUTION
• Indicates a potentially hazardous situation which, if not avoided, may result in minor or
moderate injury. It may also be used to alert against unsafe practices.
• The following graphic symbols are used to give instructions that need to be observed.
Used to call the service technician attention to what is graphically represented
inside the marking (including a warning).
Used to prohibit the service technician from doing what is graphically represented
inside the marking.
Used to instruct the service technician to do what is graphically represented
inside the marking.
1-1. Warning
1. Always observe precautions.
• Parts requiring special attention in this product will include a label containing
the mark shown on the left plus precautionary notes. Be sure to observe the
precautions.
• Be sure to observe the “Safety Information” given in the Operator’s Manual.
WARNING
3
WARNING
2. Before starting the procedures, be sure to unplug the power cord.
• This product contains a high-voltage unit and a circuit with a large current
capacity that may cause an electric shock or burn.
• The product also contains parts that can jerk suddenly and cause injury.
• If this product uses a laser, laser beam leakage may cause eye damage or
blindness.
3. Do not throw toner or the toner bottle into a fire.
• Do not throw toner or the Toner Bottle (Imaging Cartridge, Toner Cartridge) into
a fire. Toner expelled from the fire may cause burns.
4. Use the specified parts.
• For replacement parts, always use the genuine parts specified in the manufacturer’s parts manual. Installing a wrong or unauthorized part could cause
dielectric breakdown, overload, or undermine safety devices resulting in possible electric shock or fire.
• Replace a blown electrical fuse or thermal fuse with its corresponding genuine
part specified in the manufacturer’s parts manual. Installing a fuse of a different
make or rating could lead to a possible fire. If a thermal fuse blows frequently,
the temperature control system may have a problem and action must be taken
to eliminate the cause of the problem.
5. Handle the power cord with care and never use a multiple outlet.
• Do not break, crush or otherwise damage the power cord. Placing a heavy
object on the power cord, or pulling or bending it may damage it, resulting in a
possible fire or electric shock.
• Do not use a multiple outlet to which any other appliance or machine is connected.
• Be sure the power outlet meets or exceeds the specified capacity.
• Use only the power cord supplied in the package. If a power cord is not supplied, only use the power cord and plug that is specified in POWER CORD
INSTRUCTION. Failure to use this cord could result in a fire or electrical shock.
• Use the power cord supplied in the package only for this machine and NEVER
use it for any other product. Failure to observe this precaution could result in a
fire or electrical shock.
6. Be careful with the high-voltage parts.
• A part marked with the symbol shown on the left carries a high voltage. Touching it could result in an electric shock or burn. Be sure to unplug the power cord
before servicing this part or the parts near it.
7. Do not work with wet hands.
• Do not unplug or plug in the power cord, or perform any kind of service or
inspection with wet hands. Doing so could result in an electric shock.
4
WARNING
8. Do not touch a high-temperature part.
• A part marked with the symbol shown on the left and other parts such as the
exposure lamp and fusing roller can be very hot while the machine is energized. Touching them may result in a burn.
• Wait until these parts have cooled down before replacing them or any surrounding parts.
9. Maintain a grounded connection at all times.
• Connect the power cord to an electrical outlet that is equipped with a grounding
terminal.
10. Do not remodel the product.
• Modifying this product in a manner not authorized by the manufacturer may
result in a fire or electric shock. If this product uses a laser, laser beam leakage
may cause eye damage or blindness.
11. Restore all parts and harnesses to their original positions.
• To promote safety and prevent product damage, make sure the harnesses are
returned to their original positions and properly secured in their clamps and
saddles in order to avoid hot parts, high-voltage parts, sharp edges, or being
crushed.
• To promote safety, make sure that all tubing and other insulating materials are
returned to their original positions. Make sure that floating components
mounted on the circuit boards are at their correct distance and position off the
boards.
1-2. Caution
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.
CAUTION
5
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.
6
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
7
1-4. Other Precautions
• When handling circuit boards, observe the “HANDLING of PWBs”.
• The PC Drum is a very delicate component. Observe the precautions given in “HANDLING OF THE PC DRUM” because mishandling may result in serious image problems.
• Note that replacement of a circuit board may call for readjustments or resetting of particular items, or software installation.
1-5. Precautions for Service
• When performing inspection and service procedures, observe the following precautions
to prevent mishandling of the machine and its parts.
✽ Depending on the model, some of the precautions given in the following do not apply.
1. Precautions Before Service
• When the user is using a word processor or personal computer from a wall outlet of the
same line, take necessary steps to prevent the circuit breaker from opening due to overloads.
• Never disturb the LAN by breaking or making a network connection, altering termination,
installing or removing networking hardware or software, or shutting down networked
devices without the knowledge and express permission of the network administrator or
the shop supervisor.
2. How to Use this Book
DIS/REASSEMBLY, ADJUSTMENT
• To reassemble the product, reverse the order of disassembly unless otherwise specified.
TROUBLESHOOTING
• If a component on a PWB or any other functional unit including a motor is defective, the
text only instructs you to replace the whole PWB or functional unit and does not give troubleshooting procedures applicable within the defective unit.
• All troubleshooting procedures contained herein assume that there are no breaks in the
harnesses and cords and all connectors are plugged into the right positions.
• The procedures preclude possible malfunctions due to noise and other external causes.
3. Precautions for Service
• Keep all disassembled parts in good order and keep tools under control so that none will
be lost or damaged.
• After completing a service job, perform a safety check. Make sure that all parts, wiring
and screws are returned to their original positions.
• Do not pull out the toner hopper while the toner bottle is turning. This could result in a
damaged motor or locking mechanism.
• If the product is to be run with the front door open, make sure that the toner hopper is in
the locked position.
• Do not use an air gun or vacuum cleaner for cleaning the ATDC Sensor and other sensors, as they can cause electrostatic destruction. Use a blower brush and cloth. If a unit
containing these sensors is to be cleaned, first remove the sensors from the unit.
8
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 tube.
9
8. Handling of the PC Drum
✽ Only for Products Not Employing an Imaging Cartridge.
During Transportation/Storage
• Use the specified carton whenever moving or storing the PC Drum.
• The storage temperature is in the range between –20°C and +40°C.
• In summer, avoid leaving the PC Drum in a car for a long time.
Handling
• Ensure that the correct PC Drum is used.
• Whenever the PC Drum has been removed from the printer, store it in its carton or protect it with a Drum Cloth.
• The PC Drum exhibits greatest light fatigue after being exposed to strong light over an
extended period of time. Never, therefore, expose it to direct sunlight.
• Use care not to contaminate the surface of the PC Drum with oil-base solvent, fingerprints, and other foreign matter.
• Do not scratch the surface of the PC Drum.
• Do not apply chemicals to the surface of the PC Drum.
• Do not attempt to wipe clean the surface of the PC Drum.
If, however, the surface is contaminated with fingerprints, clean it using the following procedure.
A. Place the PC Drum into one half of its carton.
C4134S024AA
C4134S025AA
B. Gently wipe the residual toner off the surface of the
PC Drum with a dry, Dust-Free Cotton Pad.
• Turn the PC Drum so that the area of its surface on
which the line of toner left by the Cleaning Blade is
present is facing straight up. Wipe the surface in one
continuous movement from the rear edge of the PC
Drum to the front edge and off the surface of the PC
Drum.
• Turn the PC Drum slightly and wipe the newly
exposed surface area with a CLEAN face of the
Dust-Free Cotton Pad. Repeat this procedure until
the entire surface of the PC Drum has been thoroughly cleaned.
✽ At this time, always use a CLEAN face of the dry
Dust-Free Cotton Pad until no toner is evident on the
face of the Pad after wiping.
10
C. Soak a small amount of either ethyl alcohol or iso-
propyl alcohol into a clean, unused Dust-Free Cotton Pad which has been folded over into quarters.
Now, wipe the surface of the PC Drum in one continuous movement from its rear edge to its front
edge and off its surface one to two times.
✽ Never move the Pad back and forth.
C4134S026AA
D. Using the SAME face of the Pad, repeat the proce-
dure explained in the latter half of step 3 until the
entire surface of the PC Drum has been wiped.
Always OVERLAP the areas when wiping. Two
complete turns of the PC Drum would be appropriate for cleaning.
C4134S027AA
NOTES
• Even when the PC Drum is only locally dirtied, wipe the entire surface.
• Do not expose the PC Drum to direct sunlight. Clean it as quickly as possible even under
interior illumination.
• If dirt remains after cleaning, repeat the entire procedure from the beginning one more
time.
9. Handling of the Imaging Cartridge and Print Unit
✽ Only for Products Employing an Imaging Cartridge and Print Unit.
During Transportation/Storage
• The storage temperature is in the range between –20 °C and +40 °C.
• In summer, avoid leaving the Imaging Cartridge and Print Unit in a car for a long time.
Handling
• Store the Imaging Cartridge and Print Unit in a place that is not exposed to direct sunlight.
Precautionary Information on the PC Drum Inside the Imaging Cartridge and Print Unit
• Use care not to contaminate the surface of the PC Drum with oil-base solvent, fingerprints, and other foreign matter.
• Do not scratch the surface of the PC Drum.
• Do not attempt to wipe clean the surface of the PC Drum.
11
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 power of the laser diode 15 mW
Maximum average radiation power(*) 7.351 µW
Wavelength 770-800 nm
*:at laser aperture of the Print Head Unit
• This product employs a Class 3b laser diode that emits an invisible laser beam. The laser
diode and the scanning polygon mirror are incorporated in the print head unit.
• The print head unit is NOT A FIELD SERVICE ITEM. Therefore, the print head unit
should not be opened under any circumstances.
Laser Aperture of
the Print Head Unit
4134G001AA
This figure shows the view inside the Top Cover with the Toner
Cartridge and the Drum Cartridge removed.
12
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 15 mW
Wavelength 770-800 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 15 mW
Wavelength 770-800 nm
Denmark
ADVARSEL
Usynlig laserstråling ved åbning, når sikkerhedsafbrydere er ude af funktion.
Undgå udsættelse for stråling. Klasse 1 laser produkt der opfylder IEC60825 sikkerheds
kravene.
halvlederlaser
Laserdiodens højeste styrke 15 mW
bølgelængden 770-800 nm
13
Finland, Sweden
LUOKAN 1 LASERLAITE
KLASS 1 LASER APPARAT
VAROITUS!
Laitteen käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saattaa altistaa
käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälle lasersäteilylle.
puolijohdelaser
Laserdiodin suurin teho 15 mW
aallonpituus 770-800 nm
VARNING!
Om apparaten används på annat sätt än i denna bruksanvisning specificerats, kan
användaren utsättas för osynlig laserstrålning, som överskrider gränsen för laserklass 1.
halvledarlaser
Den maximala effekten för laserdioden 15 mW
våglängden 770-800 nm
VARO!
Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättomälle lasersäteilylle. Älä
katso säteeseen.
VARNING!
Osynlig laserstråining när denna del är öppnad och spärren är urkopplad. Betrakta ej
stråien.
Norway
ADVERSEL
Dersom apparatet brukes på annen måte enn spesifisert i denne bruksanvisning, kan
brukeren utsettes för unsynlig laserstrålning, som overskrider grensen for laser klass 1.
halvleder laser
Maksimal effekt till laserdiode 15 mW
bølgelengde 770-800 nm
14
1-7. Laser Safety Label
• A laser safety label is attached to the the machine as shown below.
C4134o118AA
C4134o146AB
1-8. Laser Caution Label
• A laser caution label is attached to the inside of the machine as shown below.
15
C4134o066AD
1-9. PRECAUTIONS FOR HANDLING THE LASER EQUIPMENT
• When laser protective goggles are to be used, select ones with a lens conforming to the
above specifications.
• When a disassembly job needs to be performed in the laser beam path, such as when
working around the printerhead and PC Drum, be sure first to turn the printer OFF.
• If the job requires that the printer be left ON, take off your watch and ring and wear laser
protective goggles.
• A highly reflective tool can be dangerous if it is brought into the laser beam path. Use
utmost care when handling tools on the user’s premises.
• The Print Head are not to be disassembled or adjusted in the field. Replace the Unit or
Assembly including the Control Board. Therefore, remove the Laser Diode, and do not
perform Control Board trimmer adjustment.
16
CONTENTS
17
18
SAFETY PRECAUTIONS FOR INSPECTION AND SERVICE 3
Warning 3
Caution 5
Used Batteries Precautions 7
Other Precautions 8
Precautions for Service 8
Safety information 12
Laser Safety Label 15
Laser Caution Label 15
PRECAUTIONS FOR HANDLING THE LASER EQUIPMENT 16
CONTENTS 17
GENERAL 23
SPECIFICATIONS 25
Precautions for Installation 28
Installation Site 28
Power Source 28
Space Requirements 29
Precautions for Use 30
To ensure that the printer is used in an optimum condition 30
Operating Environment 30
Power Requirements 30
Other Precautions 30
Handling Consumables 31
List of Names 32
MECHANICAL/ELECTRICAL 33
Cross-Section View 35
Electrical Parts Layout 36
Printer 36
Controller 38
Operating sequence 39
Image stabilization control 40
Image Stabilization Control 40
Operation Timing 41
Image stabilization control flow 42
AIDC Sensor 43
Print Head (PH) 44
System Configuration 44
Laser exposure process 45
Laser emission timing 46
Laser emission area 47
Cooling of Print Head Unit 48
Print Unit 49
System Configuration 49
Drive Print Unit 50
Print Unit Detection 51
Toner Cartridge detection 51
PC Drum 52
19
PC Drum Charging 53
Developing Section 55
Cleaner 60
IMAGE TRANSFER SECTION 61
Construction of Transfer Belt Unit 61
Transfer Belt Unit Drive 62
New Transfer Belt Unit Detection 62
Transfer Belt Unit Set Detection 63
Color Shift Detection 64
Color Shift Correction 65
First Image Transfer Roller Pressure/Retraction Mechanism 67
2nd Image Transfer Pressure/Retraction Mechanism 69
2nd Image Transfer 70
2nd Image Transfer 70
Image Transfer ATVC Control 71
Temperature/Humidity Sensor 72
Transfer Belt Cleaning Mechanism 73
Cleaning the 2nd Image Transfer Roller 73
Waste Toner Box 74
Fusing Section 75
Drive of Fuser Unit 75
Fuser Unit Drive 76
Control of Loop Before Fusing 76
New Fuser Unit Detection 77
Pressure of Fusing Roller 77
Temperature Control 78
Paper Take-Up 82
1st Drawer 82
2nd Drawer (Add-on Cassette: Optional) 86
Manual Bypass Paper Take-Up Unit (optional) 91
Transport Section 92
Synchronizing Roller Drive 92
Image Transfer Failure Prevention During High Humidity 92
Switch of system speed 93
OHP Detecting 93
Duplex Unit (optional) 94
Drive of Duplex Unit 94
PAPER FEEDING SYSTEM 95
MAINTENANCE 99
Maintenance Schedule List 101
Guidelines for Life-time Expected Values by Unit 103
Disassembly/Reassembly and Cleaning 105
Replacing the Units 110
ASSEMBLY/
DISASSEMBLY 125
SERVICE INSTRUCTIONS 127
IDENTIFICATION OF FUSES 127
20
PARTS WHICH MUST NOT BE TOUCHED 128
ASSEMBLY/DISASSEMBLY 129
Doors, Covers and Exterior Parts 129
Removing Doors, Covers and Exterior Parts 130
Removing Circuit Boards and other Electrical Components 134
Removing Units 149
CLEANING AND DISASSEMBLY OF THE ENGINE PARTS 158
Disassembing the Manual Feed Unit (optional) 167
Disassembling the Duplex Unit (optional) 170
Disassembling the Paper Feed Unit (optional) 175
CONTROL PANEL
Panel Menu Operations 177
Control Panel 179
Names and Functions of Control Panel Keys 179
Control Panel Display 181
Control Panel Message 182
Canceling a Print Job 186
Panel Menu 187
Summary of Panel Menu 187
Sub-menu 188
Contents of Panel Menu 193
MAINTENANCE MODE 198
SETTING THE MAINTENANCE MODE 198
Summary of the Maintenance Mode 199
Maintenance Menu 199
CONTENTS OF MAINTENANCE MODE 200
UPDATE FIRMWARE 202
Update using IEEE-1284 Parallel Cable 202
Network Cable (FTP) Update 204
WHEN UPDATE FAILS 206
TROUBLESHOOTING 207
INTRODUCTION 209
Checking the electrical components 209
System Control Block Diagram 213
Jam 214
Initial Check Items 214
Misfeed Display 215
Misfeed Detecting Sensor Layout 216
Misfeed Detection Timing/Troubleshooting Procedures 217
MALFUNCTIONS 227
MALFUNCTION CODES 227
Malfunction Detection Timing and Troubleshooting Procedure 230
Power Supply-Related Malfunctions 248
Printer is not energized at all 248
Other Precautions 249
Emergency Stop Error 249
Print Prohibition Error 250
21
Warning Error 250
Image Problem 252
Troubleshooting Procedure by a Particular Image Quality Problem 252
22
GENERAL
23
24
1. SPECIFICATIONS
Printer
Desktop tandem color laser beam printer
TYPE
Printing System
Exposure System
Printing Density
Paper Size
Paper Type
Fast Print Time
Multi-page Print Speed
Warm-Up Time
System Speed
Paper Feeding System
Paper Ejection Method
Charging System
Developing System
Image Transfer System
PC Drum
PC Drum Cleaning
Paper Separator System
Fusing System
Dimensions
Weight
Power Requirements
Max. Power
Consumption
Operating Noise
:
Semiconductor laser and electrostatic image transfer to plain
:
paper
:
Laser diode and polygon mirror
:
600 × 600 dpi
:
1st Drawer: A5, ISO B5, JIS B5, A4, B4, A3, Oversized,
Folio, SP Folio, Statement, Executive, Government Letter,
Letter, Government Legal, Legal, 11 × 17, 8 × 10, Foolscap,
12 × 18, Com10, DL, Monarch, C5, C6, Chokei #3, Chokei
#4, Chinese 8K, Chinese 16K, Chinese 32K, Japanese
official postcards, Irregular size (90 × 148 mm - 311 × 457
mm)
2nd Drawer: JIS B5, A4, B4, A3, Letter, Legal, Ledger
1st Drawer: plain paper, recycled paper (64-90 g/m
:
paper, envelopes, label sheets, thick paper (91-210 g/m
and japanese official postcards
2nd Drawer: plain paper, recycled paper (64-90 g/m
:
For monochrome printing: 13 sec. (for A4C, 1st Drawer)
For full color printing: 16 sec. (for A4C, 1st Drawer)
:
21.6 sheets/minute (for A4C, 1st Drawer)
20.5 sheets/minute (for Letter C, 1st Drawer)
:
Within 99.9 seconds (at a room temperature of 23°C and at
the rated voltage)
:
90.3 mm/sec
:
2-way system (maximum 5-way) *1
250 sheets of plain paper, recycled paper, 10 envelopes, 50
sheets of thick paper, label sheets, OHP transparencies,
japanese official postcards
2nd Drawer (500 sheets)
Expandable to 5-way system by installing the optional 3rd
and 4th Drawer paper cassettes
:
Face-down (tray capacity: 250 sheets)
:
DC comb electrode Scorotron System
:
Single-element developing system
:
Intermediate Image Transfer Belt System
:
OPC
:
Blade system
:
Curvature separation + charge-neutralizing system
:
Heated roller fusing system (Oil is not used)
:
628 mm (W) × 594 mm (D) × 564 mm (H)
:
58.6 kg (with PU/TC)
:
120 V, 60 Hz ± 3 Hz, 12 A
220-240 V, 50-60 Hz ± 3 Hz, 6.5 A
:
1,400 W
:
During standby:40 dB (A) or less
During printing: 50 dB (A) or less (1st Drawer), 53 dB (A) or
less (2nd Drawer)
2
), OHP
2
)
2
),
25
Environmental
Conditions
Option
Lower Feeder Unit (optional)
Name
Paper Type
Paper Size
Capacity
Paper Feed Separator
Power Requirements
Size
Weight
Duplex Unit Kit (optional)
Name
Paper Type
Paper Size
Print speed (doublesided printing)
Paper transfer baseline
Power Requirements
Size
Weight
::10-32.5 °C
15-85%
Paper Feed Unit, Duplex Unit Kit (with Manual Feed Unit)
Lower Feeder Unit
:
Plain paper (64-90 g/m
:
:
JIS B5, A4, B4, A3, Letter, Legal, Ledger
:
500 sheets (64 g/m
:
Torque Limiter Method
:
Supplied by main unit
:
575 mm (W) × 568 mm (D) × 127 mm (H)
:
8.5 kg
Duplex Unit
:
Plain paper (64-90 g/m
:
:
A5, JIS B5, A4, B4, A3, Folio, SP Folio, Statement,
2
), recycled paper (64-90 g/m2),
2
)
2
), recycled paper (64-90 g/m2)
Executive, Government Letter, Letter, Government Legal,
Legal, Ledger, 8 × 10, Foolscap, Irregular size (90 × 148 mm
- 297 × 432 mm)
:
17.5 pages/minute (for A4C, 1st Drawer)
17.0 pages/minute (for Letter C, 1st Drawer)
:
Center baseline
:
Supplied by main unit
:
65 mm (W) × 445 mm (D) × 311 mm (H)
:
2.1 kg
Name
Paper Type
Paper Size
Capacity
Power Requirements
Size
Weight
Manual Feed Unit
:
Plain paper (64-90 g/m
:
2
), recycled paper (64-90 g/m2), OHP
paper, envelopes, label sheets, thick paper (91-210 g/m
government-standard postcards
:
A5, JIS B5, A4, B4, A3, Folio, SP Folio, Statement,
Executive, Government Letter, Letter, Government Legal,
Legal, Ledger, 8 × 10, Foolscap, ISO B5, Com10, DL,
Monarch, C5, C6, Chokei #3, Chokei #4, Chinese 8K,
Chinese 16K, Chinese 32K, Japanese-standard postcards,
Irregular size (90 × 148 mm - 297 × 432 mm), Irregular size
(210 × 433 mm - 297 × 900 mm)
long paper (210 × 433 mm - 297 × 900 mm)
:
One sheet plain paper or one sheet specialty paper
:
Supplied by main unit
:
98 mm (W) × 410 mm (D) × 88 mm (H)
:
1.5 kg
26
2
),
Controller
Control Panel
CPU
Emulation
Built-in fonts
Memory
Interface
Network Protocol
Optional Expansion
Memory
Optional HDD
:
Message Window (16 digits × 2 lines), Indicator × 5, Switch ×
8, Buzzer
:
64 bits/266MHz PowerPC RISC Processor
:
PostScript Level 3, PDF Ver.1.3 (optional HDD required)
Kanji fonts 2Style (Heisei Gothic W5, Heisei Mincho W3)
European fonts 137 PostScript fonts
:
Boot ROM (512 KB), Program ROM (16 MB), EEPROM (512
B), SDRAM DIMM128 MB (2 memory slots, maximum 512
:
MB),
Ethernet (10Base-T/100Base-TX)
:
Parallel (Centronics/IEEE-1284)
USB (USB Rev. 1.1)
TCP/IP, IPX/SPX, EtherTalk
:
128 MB, 256 MB
:
Type SDRAM DIMM, PC-133, 168pin, no ECC, Nonbuffered, CL=3
30 GB
:
Type 2.5 inch IDE disk, PIO Mode 4/UDMA 66
27
2. PRECAUTIONS FOR INSTALLATION
2-1. Installation Site
To ensure safety and utmost performance of the printer, the printer should NOT be used in
a place:
• Where it will be subjected to extremely high or low temperature or humidity.
• Where it will be subjected to sudden fluctuations in either temperature or humidity.
• Is subject to direct sunlight.
• Which is in the direct air stream of an air conditioner, heater, or ventilator.
• Which has poor ventilation or is dusty.
• Which does not have a stable, level floor or where it will receive excessive vibration.
• Which is near any kind of heating device.
• Which is near volatile flammables (paint thinner, gasoline, etc.).
• Where it may be splashed with water.
• Which puts the operator in the direct stream of exhaust from the printer.
• Where ammonia gas might be generated.
2-2. Power Source
• If any other electrical equipment is connected to the same power outlet, make sure that
the capacity of the outlet is not exceeded.
• Use a power source with minimal voltage fluctuation.
• Never connect to the outlet by means of a multiple socket, power strip or any other appliances or devices.
• Ensure that the printer does not rest on the power cord or communication cable of other
electrical equipment, and that cords do not become wedged into or underneath the
device.
• Make the following checks at frequent intervals:
✽ Is the power plug abnormally hot?
✽ Are there any cracks or scrapes in the cord?
✽ Has the power plug been inserted fully into the outlet?
✽ Does anything, including the printer itself, rest on the power cord?
Use an outlet with a capacity of 120 V, 12 A or more. 220-240 V, 6.5 A or more.
2-3. Grounding
• Always ground the printer to prevent electrical shock in the event of an electrical short.
• Connect the ground wire to the ground terminal of the outlet or a grounding contact which
complies with local electrical codes.
• To avoid the risk of fire or electrical shock, never connect the ground wire to a gas pipe,
the ground wire for a telephone, a lightning rod, or a water pipe.
28
2-4. Space Requirements
• To ensure easy machine operation, replacement of consumables, and maintenance service job, provide the following space for the installation of the machine.
300
694
947
774
1012
100
594
Unit: mm
4134G003AA
29
3. PRECAUTIONS FOR USE
3-1. To ensure that the printer is used in an optimum condition
• never place heavy objects on the printer or subject the printer to shocks.
• Insert the power plug all the way into the outlet.
• Never remove secured panels or covers while the unit is printing.
• Never turn off the unit while it is printing.
• Provide good ventilation when using the printer in a confined space for a long period of
time.
• Never use flammable sprays near the printer.
• If the printer becomes exceptionally hot or produces abnormal noise, turn it off and
unplug it.
• Do not turn on the power switch at the same time that you plug the power cord into the
outlet.
• When unplugging the power cord, do not pull on the cord; hold the plug and pull it out.
• Do not bring any magnetized object near the printer.
• Do not place a vase or vessel containing water on the printer.
• Be sure to turn off the power switch at the end of the workday or upon power failure.
• Use care not to drop paper clips, staples, or other small pieces of metal into the printer.
3-2. Operating Environment
The operating environmental requirements of the printer are as follows.
• Temperature: 10-32.5°C
• Humidity: 15-85%
• Rate of temperature change: 10°C/h, 50° F/h
• Rate of humidity change: 20% RH/h
3-3. Power Requirements
The power source voltage requirements are as follows.
• Voltage fluctuations AC 120, 220-240 V ± 10%
• Frequency fluctuations 50-60 Hz ± 3 Hz
3-4. Other Precautions
Use the following precautions when performing service on a printer that uses a laser.
• 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 for the unit.
• If the service requires that the power cord be left plugged in, observe the following precautions.
1. Remove your watch, rings and any other reflective objects and wear laser protective
goggles.
2. Keep other personnel away from the service area.
3. Do not bring a highly reflective tool into the laser beam path during servicing.
30
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