Minolta magicolor 7300 User manual

FrameMaker Ver.6E(PC) magicolor 7300 Contents
02.11.11
i
Contents
1. SAFETY PRECAUTIONS FOR INSPECTION AND
SERVICE ..................................................................................P-1
1-1. Warning ....................................................................................P-1
1-2. Caution .....................................................................................P-3
1-3. Used Batteries Precautions ......................................................P-5
1-4. Other Precautions .....................................................................P-6
1-5. Precautions for Service .............................................................P-6
1-6. Safety information ...................................................................P-10
(1) Laser Safety .....................................................................P-10
(2) Internal Laser Radiation ...................................................P-10
1-7. Laser Safety Label ..................................................................P-13
1-8. Laser Caution Label ................................................................P-13
1-9. Precautions for Handling the Laser Equipment ......................P-13
GENERAL
1. SPECIFICATIONS ................................................................... G-1
2. PRECAUTIONS FOR INSTALLATION .................................... G-4
2-1. Installation Site .........................................................................G-4
2-2. Power Source ...........................................................................G-4
2-3. Grounding .................................................................................G-4
2-4. Space Requirements ................................................................G-5
3. PRECAUTIONS FOR USE ...................................................... G-6
3-1. To ensure that the printer is used in an optimum condition ......G-6
3-2. Operating Environment .............................................................G-6
3-3. Power Requirements ................................................................G-6
3-4. Other Precautions .....................................................................G-6
4. HANDLING CONSUMABLES .................................................. G-7
5. LIST OF NAMES ..................................................................... G-8
MECHANICAL/ELECTRICAL
1. CROSS-SECTION VIEW .........................................................M-1
2. ElECTRICAL PARTS LAYOUT ...............................................M-2
2-1. Printer .......................................................................................M-2
2-2. Controller ..................................................................................M-4
3. OPERATING SEQUENCE ......................................................M-5
4. IMAGE STABILIZATION CONTROL .......................................M-6
4-1. Image Stabilization Control .......................................................M-6
4-2. Operation Timing ......................................................................M-7
4-3. Image stabilization control flow .................................................M-8
4-4. AIDC Sensor .............................................................................M-9

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5. PRINT HEAD (PH) .................................................................M-10
5-1. System Configuration .............................................................M-10
5-2. Laser exposure process .........................................................M-11
5-3. Laser emission timing .............................................................M-12
5-4. Laser emission area ...............................................................M-13
(1) FD Direction .....................................................................M-13
(2) CD Direction .....................................................................M-13
5-5. Cooling of Print Head Unit ......................................................M-14
6. PRINT UNIT ...........................................................................M-15
6-1. System Configuration .............................................................M-15
6-2. Drive Print Unit ........................................................................M-16
(1) Drive Overall Unit .............................................................M-16
(2) Drive in Unit .....................................................................M-16
6-3. Print Unit Detection .................................................................M-17
(1) Set detection ....................................................................M-17
(2) New unit detection ...........................................................M-17
6-4. Toner Cartridge detection .......................................................M-17
(1) Set detection ....................................................................M-17
(2) New unit detection ...........................................................M-17
6-5. PC Drum .................................................................................M-18
6-6. PC Drum Charging .................................................................M-19
(1) Charged area Ozone Ventilation ......................................M-20
6-7. Developing Section .................................................................M-21
(1) Composition .....................................................................M-21
(2) Toner Conveyor ...............................................................M-22
(3) Developing System ..........................................................M-23
(4) Toner Level Detection ......................................................M-24
(5) Toner Cartridge Shutter Open/Close Mechanism ............M-25
6-8. Cleaner ...................................................................................M-26
7. IMAGE TRANSFER SECTION ..............................................M-27
7-1. Construction of Transfer Belt Unit ...........................................M-27
7-2. Transfer Belt Unit Drive ..........................................................M-28
7-3. New Transfer Belt Unit Detection ...........................................M-28
7-4. Transfer Belt Unit Set Detection .............................................M-29
7-5. Color Shift Detection ...............................................................M-30
(1) Simple correction .............................................................M-30
(2) Full correction ..................................................................M-30
7-6. Color Shift Correction .............................................................M-31
7-7. First Image Transfer Roller Pressure/
Retraction Mechanism ............................................................M-33
(1) Pressure/Retraction Mechanism ......................................M-33
(2) Pressure Position Switching Mechanism .........................M-34
7-8. 2nd Image Transfer Pressure/Retraction Mechanism ............M-35
7-9. 2nd Image Transfer ................................................................M-36
7-10. 2nd Image Transfer ................................................................M-36
7-11. Image Transfer ATVC Control ................................................M-37

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7-12. Temperature/Humidity Sensor ................................................M-38
7-13. Transfer Belt Cleaning Mechanism .........................................M-39
7-14. Cleaning the 2nd Image Transfer Roller .................................M-39
7-15. Waste Toner Box ....................................................................M-40
(1) Installing the Waste Toner Box ........................................M-40
(2) Waste Toner Near-Full/Full Detection ..............................M-40
8. FUSING SECTION ................................................................M-41
8-1. Drive of Fuser Unit ..................................................................M-41
8-2. Fuser Unit Drive ......................................................................M-42
8-3. Control of Loop Before Fusing ................................................M-42
8-4. New Fuser Unit Detection .......................................................M-43
8-5. Pressure of Fusing Roller .......................................................M-43
8-6. Temperature Control ...............................................................M-44
(1) Fusing Temperature control flow .....................................M-44
(2) Control at Warm-up ..........................................................M-45
(3) Temperature Control During Standby ..............................M-45
(4) Temperature Control During Printing ...............................M-46
(5) Pre-heat Mode Control .....................................................M-46
(6) Sleep Mode ......................................................................M-46
(7) Heating heater switch control ...........................................M-47
9. PAPER TAKE-UP SECTION .................................................M-48
9-1. 1st Drawer ..............................................................................M-48
(1) Tray set detection ............................................................M-48
(2) Paper Size Detection .......................................................M-49
(3) Paper Near-empty Detection ...........................................M-50
(4) Paper Empty Detection ....................................................M-50
(5) Paper Take-Up Mechanism .............................................M-51
9-2. 2nd Drawer .............................................................................M-52
(1) Tray set detection ............................................................M-52
(2) Paper Size Detection .......................................................M-53
(3) Paper Empty Detection ....................................................M-54
(4) Paper Empty Detection ....................................................M-54
(5) Paper Take-Up Mechanism .............................................M-55
(6) Vertical Transport Mechanism .........................................M-55
(7) Edge Guides and Trailing Edge Stop ...............................M-56
(8) Paper Lifting Plate ............................................................M-56
9-3. Manual Bypass Paper Take-Up Unit (Optional) ......................M-57
(1) Manual Feed Paper Take-Up Mechanism .......................M-57
(2) Manual feed operation .....................................................M-57
10. TRANSPORT SECTION ........................................................M-58
10-1. Synchronizing Roller Drive .....................................................M-58
10-2. Image Transfer Failure Prevention During High Humidity ......M-58
10-3. Switch of system speed ..........................................................M-59
10-4. OHP Detecting ........................................................................M-59

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11. DUPLEX UNIT (OPTIONAL) .................................................M-60
11-1. Drive of Duplex Unit ................................................................M-60
11-2. Paper Feeding System ...........................................................M-61
(1) Operations in 2-sided printing with a single sheet of
paper resident in, and circulated through, the system .....M-61
(2) Operations for 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. ................................................................M-62
MAINTENANCE
1. MAINTENANCE SCHEDULE LIST ..........................................E-1
1-1. Guidelines for Life-time Expected Values by Unit .....................E-3
(1) Guideline for Near-Life values ...........................................E-3
(2) Guidelines for life value ......................................................E-3
2. DISASSEMBLY/REASSEMBLY AND CLEANING ...................E-5
(1) Cleaning the Paper Take-Up Roll ......................................E-5
(2) Replacing the Paper Take-Up Roll ....................................E-5
(3) Cleaning the Paper Separator Roll ....................................E-6
(4) Replacing of the Separator Roll Assembly ........................E-7
(5) Cleaning the Vertical Transport Roller/Roll ........................E-7
(6) Replacing the Waste Toner Box ........................................E-8
(7) Replacing the Ozone Filter ................................................E-9
3. REPLACING THE UNITS .......................................................E-10
(1) Replacing the Print Unit ...................................................E-10
(2) Replacing the Toner Cartridge .........................................E-16
(3) Replacing the Fuser Unit .................................................E-19
(4) Replacing the Transfer Belt Unit ......................................E-22
ASSEMBLY/DISASSEMBLY
1. SERVICE INSTRUCTIONS ..................................................... D-1
1-1. Identification of Fuses ...............................................................D-1
1-2. Parts Which Must Not Be Touched ...........................................D-2
(1) Screws that must not be removed .....................................D-2
(2) Do not turn on the Variable Resistors on Board ................D-2
2. ASSEMBLY/DISASSEMBLY ................................................... D-3
2-1. Doors, Covers and Exterior Parts .............................................D-3
2-2. Removing Doors, Covers and Exterior Parts ............................D-4
(1) Removing the Front Door ...................................................D-4
(2) Removing the Left Cover ...................................................D-5
(3) Removing the Panel Cover ................................................D-5
(4) Removing the Top Cover ...................................................D-6
(5) Remove the Ozone Filter Cover ........................................D-6
(6) Removing the Rear Cover .................................................D-6
2-3. Removing Circuit Boards and other Electrical Components .....D-7

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<Engine>
(1) Removing the Control Board ..............................................D-8
<Removal Procedures>
<Reinstallation procedures>
(2) Removing the Controller Board ........................................D-12
(3) Remove the 2nd Drawer Control Board ...........................D-13
(4) Removing the High Resistance Board .............................D-14
(5) Removing the First Drawer Paper Size Detecting
Board ...............................................................................D-14
(6) Removing the Heater Lamp Control Board ......................D-15
(7) Removing the DC Power Supply .....................................D-16
(8) Removing the Control Panel ............................................D-17
(9) Removing High Voltage Units 1 and 2 .............................D-17
<Manual Feed Unit (optional)>
(1) Removing the Manual Feed Detecting Board ..................D-18
<Duplex Unit (optional)>
(1) Removing the Duplex Unit Control Board ........................D-19
<Paper Feed Unit (optional)>
(1) Removing the Paper Feed Unit Control Board ................D-20
2-4. Removing Units ......................................................................D-22
(1) Removing the Print Head Unit .........................................D-22
(2) Removing the 2nd Drawer ...............................................D-23
(3) Removing of the Manual Feed Unit (optional) .................D-25
(4) Removing the Duplex Unit (optional) ...............................D-26
(5) Removing of the Paper Feed Unit (optional) ....................D-28
2-5. Cleaning and Disassembly of the Engine Parts ......................D-31
(1) Composition of Transfer Belt Unit ....................................D-31
(2) Cleaning of the Fusing Entrance Guide Plate ..................D-31
(3) Cleaning the Print Head Unit window surface ..................D-32
(4) Cleaning the AIDC Sensor ...............................................D-32
(5) Removing the Paper Supply Drive Motor .........................D-32
(6) Removing the Transport Drive Motor ...............................D-33
(7) Removing the Transport Roller Motor ..............................D-33
(8) Removing the Print Unit Drive Motor YMC/Bk .................D-34
(9) Removing the 1st Image Transfer Pressure/Retraction
Clutch ...............................................................................D-34
(10)Remove the 2nd Drawer Paper Take-Up Clutch .............D-35
(11)Remove the Paper Take-Up Motor for the 2nd Drawer ...D-36
(12)Removing the Registration Sensor ..................................D-37
(13)Removing the Temperature/Humidity Sensor ..................D-38
(14)Removing the Hard Disk Drive (optional) .........................D-39
2-6. Disassembing the Manual Feed Unit (optional) ......................D-40
(1) Removing the Manual Feed Motor ...................................D-40
(2) Removing the Paper Take-Up Drive Roller ......................D-41
2-7. Disassembling the Duplex Unit (optional) ...............................D-43
(1) Removing the Duplex Unit Drive Motor ............................D-43

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(2) Removing the Wire Stopper .............................................D-44
<Reinstallation Procedure>
2-8. Disassembling the Paper Feed Unit (optional) .......................D-48
(1) Removing the Paper Take-Up Clutch ..............................D-48
(2) Removing the Paper Take-Up Motor ...............................D-49
CONTROL PANEL/Panel Menu Operations
1. CONTROL PANEL ...................................................................S-1
1-1. Names and Functions of Control Panel Keys ...........................S-1
1-2. Control Panel Display ...............................................................S-3
(1) Basic Screen ......................................................................S-3
(2) Warning Screen .................................................................S-3
1-3. Control Panel Message ............................................................S-4
(1) Standard State Message ...................................................S-4
(2) Caution Message ...............................................................S-4
(3) Start-up Messages .............................................................S-5
(4) Operator Call Message ......................................................S-6
(5) Service Call Message ........................................................S-7
1-4. Canceling a Print Job ................................................................S-8
2. PANEL MENU ..........................................................................S-9
2-1. Summary of Panel Menu ..........................................................S-9
2-2. Sub-menu ...............................................................................S-10
(1) PAPER .............................................................................S-10
(2) QUALITY ..........................................................................S-11
(3) INTERFACE .....................................................................S-12
(4) SYS DEFAULT ................................................................S-13
(5) SERVICE .........................................................................S-14
2-3. Contents of Panel Menu .........................................................S-15
(1) PRINT ..............................................................................S-15
(2) PAPER .............................................................................S-15
(3) QUALITY ..........................................................................S-16
(4) INTERFACE .....................................................................S-16
(5) SYS DEFAULT ................................................................S-17
(6) SERVICE .........................................................................S-18
(7) PASSWORD PROTECTION ...........................................S-19
3. MAINTENANCE MODE ..........................................................S-20
3-1. SETTING THE MAINTENANCE MODE .................................S-20
3-2. Summary of the Maintenance Mode .......................................S-21
3-3. Maintenance Menu .................................................................S-21
3-4. Contents of Maintenance Mode ..............................................S-22
(1) REGIST ROLLER ............................................................S-22
(2) TRANSFER POWER .......................................................S-22
(3) RESTORE PASSWORD ..................................................S-22
4. UPDATE FIRMWARE .............................................................S-23
4-1. Update using IEEE1284 Parallel Cable ..................................S-23

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4-2. Network Cable (FTP) Update .................................................S-25
4-3. When Update Fails .................................................................S-26
TROUBLESHOOTING
1. INTRODUCTION ......................................................................T-1
1-1. Checking the electrical components ......................................... T-1
(1) Sensor ................................................................................ T-1
(2) Switch ................................................................................ T-2
(3) Solenoid ............................................................................. T-2
(4) Clutch ................................................................................. T-3
(5) Motor .................................................................................. T-3
1-2. System Control Block Diagram ................................................. T-5
2. JAM ...........................................................................................T-6
2-1. Initial Check Items ....................................................................T-6
2-2. Misfeed Display ........................................................................ T-7
2-3. Misfeed Detecting Sensor Layout ............................................. T-8
2-4. Misfeed Detection Timing/Troubleshooting Procedures ........... T-9
(1) Misfeed in the 1st Drawer Paper Take-Up Section ............T-9
(2) 2nd Drawer Paper Misfeed .............................................. T-10
(3) 3rd and 4th Drawers Paper Take-Up Section Misfeed
(Optional) ......................................................................... T-11
(4) Manual Bypass Take-Up Misfeed (Optional) ................... T-12
(5) Duplex Paper Take-up Section Misfeed (Optional) .......... T-13
(6) Duplex Transport Section Misfeed (Optional) ..................T-14
(7) Vertical Transport Misfeed ............................................... T-15
(8) 2nd Image Transfer Misfeed ............................................ T-17
(9) Fusing/Exit Misfeed .......................................................... T-18
3. MALFUNCTIONS ...................................................................T-19
3-1. Malfunction Codes .................................................................. T-19
3-2. Malfunction Detection Timing and Troubleshooting
Procedure ............................................................................... T-21
(1) C15, C23, C24: Boot Flash ROM Access Failure ............T-21
(2) C26, C27: SMARTMEDIA Write/Read Failure ................. T-21
(3) C50: HDD Access Failure ................................................T-22
(4) C28: LSI Calibration Failure ............................................. T-22
(5) C02, C03: RAM Access Failure ....................................... T-23
(6) C22: EEPROM Access Failure ........................................ T-23
(7) C13: MAC Address Error ................................................. T-24
(8) C51: HDD Data Capacity Full .......................................... T-24
(9) 13C8: New Transfer Belt Unit resetting failure ................. T-25
(10)13CA: New Fuser Unit resetting failure ............................ T-25
(11)13D0: EEPROM Failure (Main Unit) ................................ T-26
(12)13D5: EEPROM Failure (PH Unit) ................................... T-26
(13)13E2: Flash ROM Write Failure ....................................... T-27
(14)13E3: Flash ROM Device Failure .................................... T-27
(15)0010: PU Drive Motor C/M/Y Failure ............................... T-28

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(16)0017: PU Drive Motor Bk Failure .....................................T-28
(17)3046: Fusing Cooling Fan Motor Failure .......................... T-29
(18)3047: PH Cooling Fan Motor Failure ............................... T-29
(19)3048: PU Cooling Fan Motor Failure ............................... T-29
(20)0040: Suction Fan Motor Failure ...................................... T-29
(21)004C: Ozone Fan Motor Failure ...................................... T-29
(22)004E: Power Supply Cooling Fan Motor Failure .............. T-29
(23)0094: 2nd Image Transfer Roller Pressure/Retraction
failure ............................................................................... T-32
(24)0096: Image Transfer Belt Pressure/Retraction failure .... T-32
(25)0060: Fusing Drive Motor Failure ..................................... T-33
(26)3020: Paper Take-Up Drive Motor Failure ....................... T-33
(27)3021: Transport Drive Motor Failure ................................T-33
(28)3022: Duplex Unit Drive Motor Failure ............................. T-33
(29)3023: Manual Bypass Unit Paper Take-Up Motor
Failure .............................................................................. T-33
(30)0250: Power Supply (24 V) Failure .................................. T-35
(31)0300: Polygon Motor Failure ............................................ T-36
(32)0310: Laser Failure .......................................................... T-36
(33)0500: Heating Roller Warm-Up Failure ............................ T-37
(34)0501: Fusing Pressure Warm-Up Failure ........................ T-37
(35)0510: Heating Roller abnormally low temperature ........... T-37
(36)0511: Fusing Pressure Roller abnormally low
temperature ...................................................................... T-37
(37)0520: Heating Roller abnormally high temperature ......... T-37
(38)0521: Fusing Pressure Roller abnormally high
temperature ...................................................................... T-37
(39)FFFF: I/F Communication Failure ....................................T-38
4. POWER SUPPLY-RELATED MALFUNCTIONS ....................T-39
4-1. Printer is not energized at all .................................................. T-39
5. OTHER PRECAUTIONS ........................................................T-40
5-1. Emergency Stop Error ............................................................ T-40
(1) Door Open Error .............................................................. T-40
(2) Unit not mounted error ..................................................... T-40
5-2. Print Prohibition Error ............................................................. T-41
5-3. Warning Error ......................................................................... T-41
6. IMAGE PROBLEM ..................................................................T-42
6-1. Troubleshooting Procedure by a Particular Image Quality
Problem .................................................................................. T-42
(1) IR System: white lines in FD, white bands in FD, colored
lines in FD, and colored bands in FD ............................... T-42
(2) white lines in CD, white bands in CD, colored lines in CD,
and colored bands in CD ................................................. T-44
(3) Uneven FD Density .......................................................... T-45
(4) Uneven CD Density ......................................................... T-46
(5) Low Density (lowered ID) .................................................T-47

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(6) Gradation Failure ............................................................. T-48
(7) Color Reproduction Failure .............................................. T-49
(8) Foggy Background ........................................................... T-50
(9) Void area, white spots ...................................................... T-51
(10)Faulty Image .................................................................... T-52
(11)Blank Copy, Black Copy .................................................. T-53
(12)Color Shift Failure ............................................................ T-54
(13)Colored Spots .................................................................. T-55
(14)Poor Fusing Performance, Offset .................................... T-56
(15)Brush Effect, Blurred Image ............................................. T-57
(16)Back Marking ................................................................... T-58
(17)Uneven Pitch .................................................................... T-59

FrameMaker Ver.6E (PC) magicolor 7300 PL/PS Standard Document Ver.05
02.11.11
P-1
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.
• 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
• 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.
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.

FrameMaker Ver.6E (PC) magicolor 7300 PL/PS Standard Document Ver.05
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P-2
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 manufac-
turer’s parts manual. Installing a wrong or unauthorized part could cause
dielectric breakdown, overload, or undermine safety devices resulting in possi-
ble 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 afuse 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 con-
nected.
• 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 sup-
plied, 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. Touch-
ing 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.

FrameMaker Ver.6E (PC) magicolor 7300 PL/PS Standard Document Ver.05
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P-3
1-2. Caution
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 ener-
gized. Touching them may result in a burn.
• Wait until these parts have cooled down before replacing them or any sur-
rounding 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.
CAUTION
1. Precautions for Service Jobs.
• A star washer and spring washer, if used originally, must be reinstalled. Omit-
ting 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 mal-
function, electric shock or injury.
• Take great care to avoid personal injury from possible burrs and sharp edges
on the parts, frames and chassis of the product.
• When moving the product or removing an option, use care not to injure your
back or allow your hands to be caught in mechanisms.

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CAUTION
2. Precautions for Servicing with Covers and Parts Removed.
• Wherever feasible, keep all parts and covers mounted when energizing the
product.
• If energizing the product with a cover removed is absolutely unavoidable, do
not touch any exposed live parts and use care not to allow your clothing to be
caught in the moving parts. Never leave a product in this condition unattended.
• Never place disassembled parts or a container of liquid on the product. Parts
falling into, or the liquid spillinginside,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 manufac-
turer’s parts manual.
• Before installing a new battery, make sure of the correct polarity of the installa-
tion 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 expo-
sure to the laser beam, resulting in eye damage or blindness. Be sure to
unplug the power cord before removing this cover.
• If removing this cover while the power is ON is unavoidable, be sure to wear
protective laser goggles that meet specifications.
• Make sure that no one enters the room when the machine is in this condition.
• When handling the laser unit, observe the “Precautions for Handling Laser
Equipment.”
6. Precautions for storing the toner or imaging cartridge.
• Be sure to keep the toner or imaging cartridge out of the reach of children.
Licking the imaging cartridge or ingesting its contents is harmful to your health.

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1-3. Used Batteries Precautions
ALL Areas CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by the manufacturer.
Dispose of used batteries according to the manufacturer’s instructions.
Germany VORSICHT!
Explosionsgefahr bei unsachgemäßem Austausch der Batterie.
Ersatz nur durch denselben oder einen vom Hersteller empfohlenen gleichwertigen Typ.
Entsorgung gebrauchter Batterien nach Angaben des Herstellers.
France ATTENTION
Il y a danger d’explosion s’il y a remplacement incorrect de la batterie.
Remplacer uniquement avec une batterie du même type ou d’un type équivalent recom-
mandé par le constructeur.
Mettre au rebut les batteries usagées conformément aux instructions du fabricant.
Denmark ADVARSEL!
Lithiumbatteri - Eksplosionsfare ved fejlagtig håndtering.
Udskiftning må kun ske med batteri af samme fabrikat og type.
Levér det brugte batteri tilbage til leverandøren.
Finland, Sweden VAROlTUS
Paristo voi räjähtää, jos se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin.
Hävitä käytetty paristo valmistajan ohjeiden mukaisesti.
VARNING
Explosionsfara vid felaktigt batteribyte.
Använd samma batterityp eller en ekvivalent typ som rekommenderas av apparat-
tillverkaren.
Kassera använt batteri enligt fabrikantens instruktion.
Norway ADVARSEL
Eksplosjonsfare ved feilaktig skifte av batteri.
Benytt samme batteritype eller en tilsvarende type anbefalt av apparatfabrikanten.
Brukte batterier kasseres i henhold til fabrikantens instruksjoner.

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1-4. Other Precautions
• When handling circuit boards, observe the “HANDLING of PWBs”.
• The PC Drum is a very delicate component. Observe the precautions given in “HAN-
DLING 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 partic-
ular 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 over-
loads.
• 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 trou-
bleshooting 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 sen-
sors, as they can cause electrostatic destruction. Use a blower brush and cloth. If a unit
containing these sensors is to be cleaned, first remove the sensors from the unit.

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4. Precautions for Dis/Reassembly
• Be sure to unplug the 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 dis-
carded 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 tem-
perature.
• 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 elec-
tricity.
• 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 dis-
charge static electricity before touching the PWB.
• Note that replacement of a PWB may call for readjustments or resetting of particular
items.
7. Handling of Other Parts
• The magnet roller generates a strong magnetic field. Do not bring it near a watch, floppy
disk, magnetic card, or CRT tube.

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8. Handling of the PC Drum
✽Only for Products Not Employing an Imaging Cartridge.
During Transportation/Storage
• Use the specified carton whenever moving or storing the PC Drum.
• The storage temperature is in the range between –20°C and +40°C.
• In summer, avoid leaving the PC Drum in a car for a long time.
Handling
• Ensure that the correct PC Drum is used.
• Whenever the PC Drum has been removed from the printer, store it in its carton or pro-
tect 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, finger-
prints, 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 proce-
dure.
A. Place the PC Drum into one half of its carton.
C4134S024AA
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 thor-
oughly 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.
C4134S025AA

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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 sun-
light.
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, finger-
prints, 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.
C. Soak a small amount of either ethyl alcohol or iso-
propyl alcohol into a clean, unused Dust-Free Cot-
ton Pad which has been folded over into quarters.
Now, wipe the surface of the PC Drum in one con-
tinuous 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 appropri-
ate for cleaning.
C4134S027AA

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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
*: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.
semiconductor laser
Maximum power of the laser diode 15 mW
Maximum average radiation power(*) 7.351 µW
Wavelength 770-800 nm
4134G001AA
This figure shows the view inside the Top Cover with the Toner
Cartridge and the Drum Cartridge removed.
Laser Aperture of
the Print Head Unit