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DEVELOP
SERVICE MANUAL & OPTIONS D 16G
4986-7991-00
INDEX (Field Service) GENERAL
MECHANICAL/ELECTRICAL
MAINTENANCE DIS/REASSEMBLY, ADJUSTMENT CONTROL PANEL/SERVICE MODE DESCRIPTIONS TROUBLESHOOTING
CONTENTS
GENERAL
1. SPECIFICATIONS ...........................................................................................G-1 (1) Main Unit ..........................................................................................G-1 (2) GDI Printer Function ........................................................................G-3 2. PRECAUTIONS FOR INSTALLATION ............................................................G-4 2-1. Installation Site .........................................................................................G-4 2-2. Power Source ...........................................................................................G-4 3. PRECAUTIONS FOR USE ..............................................................................G-5 3-1. To Ensure the Printer is Used in an Optimum Condition .........................G-5 3-2. Operating Environment ............................................................................G-5 3-3. Power Requirements ................................................................................G-5 4. HANDLING OF THE CONSUMABLES ............................................................G-6 5. MISCELLANEOUS PRECAUTIONS ................................................................G-6 6. PARTS IDENTIFICATION ................................................................................G-7
MECHANICAL/ ELECTRICAL
1. 2. 3. 4. 5. COMPONENTS LAYOUT ................................................................................M-1 COPY PROCESS ............................................................................................M-2 PAPER PATH ..................................................................................................M-4 DRIVE SYSTEM ..............................................................................................M-5 OPERATING SEQUENCE ...............................................................................M-6 5-1. Print Start Sequence ................................................................................M-6 (1) When the pre-start control is not provided .......................................M-6 (2) When the pre-start control is provided .............................................M-7 5-2. Print End Sequence .................................................................................M-7 IC (IMAGING CARTRIDGE) SECTION ...........................................................M-8 6-1. Overview ..................................................................................................M-8 6-2. PC Drum ..................................................................................................M-10 6-3. Developing System ..................................................................................M-11 6-4. Detection of Toner Cartridge ....................................................................M-12 (1) Installation detection ........................................................................M-12 (2) Interchangeability detection .............................................................M-12 (3) Toner Near Empty and Toner Empty Detection ...............................M-12 DRUM CHARGE ..............................................................................................M-14 (1) Overview ..........................................................................................M-14 IR SECTION .....................................................................................................M-15 8-1. Image Data Processing ............................................................................M-15 8-2. Exposure Components Section ................................................................M-16 8-3. Scanner Drive Mechanism .......................................................................M-17 (1) Scanner Drive Mechanism ...............................................................M-17 8-4. Scanner Motor Drive Control ....................................................................M-17 PRINT HEAD (PH) ...........................................................................................M-18 9-1. Construction .............................................................................................M-18 9-2. Laser Exposure Process ..........................................................................M-19
6.
7. 8.
9.
i
10.
11. 12.
13. 14.
9-3. Laser Emission Timing ............................................................................ M-20 9-4. Laser Emission Area ............................................................................... M-21 (1) Main scanning direction ................................................................... M-21 (2) Sub-scanning direction .................................................................... M-21 PAPER TAKE-UP SECTION ........................................................................... M-22 10-1.Tray 1 ...................................................................................................... M-22 (1) Paper take-up mechanism .............................................................. M-22 (2) Double feed preventive mechanism ................................................ M-23 (3) Paper empty detection .................................................................... M-23 (4) Paper take-up retry function ............................................................ M-23 IMAGE TRANSFER ......................................................................................... M-24 11-1.Overview ................................................................................................. M-24 FUSING UNIT .................................................................................................. M-25 12-1.Overview ................................................................................................. M-25 12-2.Fusing Temperature Control ................................................................... M-26 (1) Temperature changes (plain paper having a length of 186 mm or more) ........................... M-26 (2) Temperature control ........................................................................ M-26 (3) Temperature control mode .............................................................. M-27 (4) Printing temperature by paper type in different temperature control modes ........................................... M-27 (5) Fusing temperature protect control ................................................. M-28 PAPER EXIT ................................................................................................... M-29 13-1.Paper Exit Mechanism ............................................................................ M-29 MISCELLANEOUS .......................................................................................... M-30 14-1.Cooling of the Printer Interior .................................................................. M-30 14-2.Original Cover Open/Close Detection Mechanism .................................. M-31
MAINTENANCE
1. MAINTENANCE SCHEDULE .......................................................................... E-1 1-1. Guidelines for Life Specifications Values by Unit .................................... E-2 (1) Life Specifications Values ............................................................... E-2 2. REPLACEMENT/CLEANING OF PARTS ....................................................... E-3 (1) Cleaning of the Paper Take-Up Roll ................................................ E-3 (2) Replacement of the Paper Take-Up Roll ......................................... E-3 (3) Replacement of the Image Transfer Roller ..................................... E-4 3. REPLACEMENT OF UNITS ............................................................................ E-5 (1) Replacement of the Toner Cartridge ............................................... E-5 (2) Replacement of the Drum Cartridge ................................................ E-7 (3) Replacement of the Fusing Unit ...................................................... E-8
DIS/REASSEMBLY, ADJUSTMENT
1. SAFETY INFORMATION ................................................................................ D-1 1-1. Laser Safety ............................................................................................ D-1 1-2. Internal Laser Radiation .......................................................................... D-1 1-3. Laser Safety Label .................................................................................. D-4 1-4. Laser Caution Label ................................................................................ D-4
ii
1-5. Precautions for Handling the Laser Equipment ........................................D-5 2. PRECAUTIONS FOR DISASSEMBLY/ADJUSTMENTS .................................D-6 2-1. Parts That Must Not be Touched .............................................................D-6 (1) Red Painted Screws ........................................................................D-6 (2) Variable resistors on board ..............................................................D-6 (3) Other Screws not Marked with Red Paint ........................................D-6 3. DISASSEMBLY/REASSEMBLY ......................................................................D-7 3-1. Identification of Exterior Parts and Removal Procedures for Them .........D-7 3-2. Removal of Circuit Boards and Other Electrical Components .................D-9 (1) Removal of the Controller/Mechanical Control Board ......................D-10 (2) Removal of the Control Panel ..........................................................D-10 (3) Removal of the Interface Board .......................................................D-11 (4) Removal of the Power Unit ..............................................................D-12 (5) Removal of the High Voltage Unit ....................................................D-14 3-3. Removal of Units ......................................................................................D-15 (1) Removal of the IR Unit .....................................................................D-15 (2) Removal of the PH Unit ...................................................................D-16 3-4. Disassembly of the Image Reading Section ............................................D-18 (1) Removal of the Original cover set sensor ........................................D-18 (2) Removal of the Upper Cover Assy. (Original Glass) ........................D-18 (3) Removal of the Scanner Motor ........................................................D-18 (4) Removal of the Scanner Assy. .........................................................D-19 (5) Removal of the Timing Belt ..............................................................D-20 3-5. Disassembly of the Main Drive Section ....................................................D-21 (1) Removal of the Main Motor ..............................................................D-21 (2) Removal of the Paper Empty Sensors .............................................D-21 (3) Removal of the Paper Take-Up Solenoid ........................................D-23 (4) Removal of the Paper Take-Up Clutch Gear ...................................D-24 (5) Removal of the Torque Limiter .........................................................D-25 (6) Disassembly of the Fusing Unit .......................................................D-26 4. ADJUSTMENTS ...............................................................................................D-29 4-1. Electrical/Image Adjustment .....................................................................D-29 (1) Accessing the Service Mode ............................................................D-29 (2) Accessing the "ADJUST" Menu .......................................................D-29 (3) Printing a Test Pattern .....................................................................D-29 (4) Margin Adjustment (Leading Edge/Trailing Edge/Both Sides) .........D-30 (5) Printer's Main Scanning Registration Adjustment ............................D-31 (6) Printer's Sub-Scanning Registration Adjustment .............................D-32 (7) Scanner's Main Scanning Zoom Ratio Adjustment ..........................D-33 (8) Scanner's Sub-Scanning Zoom Ratio Adjustment ...........................D-35 (9) Scanner's Main Scanning Registration Adjustment .........................D-37 (10) Scanner's Sub-Scanning Registration Adjustment ..........................D-39 5. MISCELLANEOUS ...........................................................................................D-40 5-1. Removal of the Mechanical Counter (Option) ..........................................D-40 5-2. Updating the Firmware .............................................................................D-41 (1) Installing the GDI Printer/TWAIN Driver Using Plug and Play .........D-41 5-3. Procedure for Updating the GDI Firmware ...............................................D-43
iii
5-4. Remedy for a Failed Updating of the Firmware ....................................... D-45 5-5. Moving the EEPROM .............................................................................. D-47
CONTROL PANEL/SERVICE MODE DESCRIPTIONS
1. CONTROL PANEL DESCRIPTIONS .............................................................. S-1 1-1. Names of Control Panel Parts and Their Functions ................................ S-1 2. FUNCTIONS OF SWITCHES AND PARTS ON PWBs ................................... S-3 2-1. Circuit Board Locations ........................................................................... S-3 2-2. PWB-P (Controller/Mechanical Control Board) ....................................... S-3 2-3. PWB-IF (Interface Board) ........................................................................ S-4 3. UTILITY MODE ............................................................................................... S-5 3-1. Utility Mode Function Tree ...................................................................... S-5 3-2. Utility Mode Setting Procedure ................................................................ S-6 (1) Machine Setting ............................................................................... S-6 (2) Paper Source Setting ...................................................................... S-8 (3) Copy Setting .................................................................................... S-8 4. SERVICE MODE ............................................................................................. S-9 4-1. Service Mode Function Tree ................................................................... S-9 4-2. Service Mode Setting Procedure ............................................................. S-11 4-3. Service Mode Functions .......................................................................... S-12 (1) Service's Choice .............................................................................. S-12 (2) Adjust ............................................................................................ S-14 (3) Counter ............................................................................................ S-17 (4) Display ............................................................................................ S-19 (5) Function ........................................................................................... S-19 (6) Fixed Zoom Change ........................................................................ S-21 (7) Factory Test .................................................................................... S-22 (8) Clear Data ....................................................................................... S-22 5. SECURITY MODE ........................................................................................... S-23 5-1. Security Mode Function Tree .................................................................. S-23 5-2. Security Mode Setting Procedure ............................................................ S-23 (1) Security ........................................................................................... S-23
TROUBLESHOOTING
1. INTRODUCTION ............................................................................................. T-1 1-1. Electric Components Check Procedures ................................................. T-1 (1) Sensors ........................................................................................... T-1 (2) Switches .......................................................................................... T-2 (3) Solenoids ......................................................................................... T-2 (4) Motors ............................................................................................ T-3 1-2. Overall Control Configuration .................................................................. T-5 2. PAPER MISFEED ........................................................................................... T-6 2-1. Initial Check Items ................................................................................... T-6 2-2. Paper Misfeed Displays ........................................................................... T-7 2-3. Locations of Misfeed Detection Sensors ................................................. T-8 2-4. Misfeed Detection Timing and Troubleshooting Procedures ................... T-9 (1) Paper Take-Up/Transport Misfeed .................................................. T-9 (2) Fusing/Exit Misfeed ......................................................................... T-10
iv
3. MALFUNCTIONS/WARNING ..........................................................................T-11 3-1. List of Malfunctions ..................................................................................T-11 3-2. Malfunction Detection Timing and Troubleshooting Procedures ..............T-14 (1) C0045: Fuser fan motor error ..........................................................T-14 (2) C0210: H.V. abnormal .....................................................................T-15 (3) C0500: Fuser warm up error ............................................................T-16 (4) C0510: Fuser temperature low ........................................................T-17 (5) C0520: Fuser overheat ....................................................................T-18 (6) C0650: Scanner home sensor error .................................................T-18 (7) C1200: ASIC memory abnormal ......................................................T-19 (8) C1300: Polygon mirror motor error ..................................................T-19 (9) C133B: Communication with option error ........................................T-20 (10) C133D: ROM checksum error ..........................................................T-20 (11) C13F0: Laser error ...........................................................................T-21 (12) C1468: EEPROM error ....................................................................T-21 (13) C14A3: IR lamp malfunction ............................................................T-22 4. MALFUNCTIONS RELATED TO POWER SUPPLY .......................................T-23 4-1. Power is not Turned ON. ..........................................................................T-23 5. IMAGE QUALITY PROBLEMS ........................................................................T-24 5-1. Troubleshooting Image Quality Problems ................................................T-24 5-2. Initial Checks ............................................................................................T-24 5-3. Troubleshooting for Specific Image Quality Problems .............................T-25 (1) Image reading system: Blank or black prints ...................................T-26 (2) Image reading system: Low image density ......................................T-27 (3) Image reading system: Foggy background or rough image .............T-28 (4) Image reading system: Black streaks or bands ...............................T-29 (5) Image reading system: Black spots .................................................T-30 (6) Image reading system: Blank streaks or bands ...............................T-31 (7) Image reading system: Uneven image ............................................T-32 (8) Printer system: Blank or black prints ................................................T-33 (9) Printer system: Blank spots .............................................................T-34 (10) Printer system: Smears on back ......................................................T-34 (11) Printer system: Low image density ..................................................T-35 (12) Printer system: Foggy background ..................................................T-36 (13) Printer system: Blank streaks or bands ...........................................T-37 (14) Printer system: Black streaks or bands ............................................T-38 (15) Printer system: Offset image ............................................................T-38 (16) Printer system: Uneven image .........................................................T-39
v
GENERAL
1.
(1)
SPECIFICATIONS
Main Unit
: Desktop Type Original scanning system : Scanning in main scanning direction with a 3-line color CCD sensor, and scanning in sub-scanning direction with unit scanning and sheet feed-through system : OPC (Organic Photoconductor) Photoconductor type : Electrostatic dry Powdered image transfer to plain paper with Copying system laser : 600 dpi × 600 dpi, 600 dpi × 300 dpi Resolution : 2-Way system (Tray1 and Bypass Tray) Paper feed-in system *3-Way system is possible if optional PF-125 (Tray2) is installed. : Unit scanning slit exposure Exposure system : FMT single component developing Developing system : Rotating brush with pre-charge film Drum-charging system : Roller transfer Image transfer system Paper separation system : Curvature separation + Charge Neutralizing needle : Heat roller Fusing system : Up to Legal size Max. Original size Copy Medium Paper source Plain paper (60 to 90 g/m ) (16 to 24 lb.) Recycled paper (60 to 90 g/m2) (16 to 24 lb.) Type Special paper (91 to 163 g/m2) (24 to 43 lb.) Transparencies Label sheets Envelopes Dimension Maximum (width × length) Minimum (width × length)
2
Tray1 216×356 mm 105×148 mm
Tray2 A4 L, Letter L
Bypass Tray 216×356 mm 105×148 mm
NOTE The dimension for Tray2 is fixed at A4L or Letter L.
G-1
Continuous copy speed (copies/min.) Continuous print speed (sheets/min.) Warm-up time
: 12 copies/minute (at full size and 600 dpi × 300 dpi, with ADF) : More than 16 sheets/minute (with plain A4 L or Letter L paper) : Less than 25 seconds (at a room temperature of 23 °C and at the rated voltage) : 16 seconds or less (at full size and 600 dpi × 300 dpi, with plain A4 L or Letter L paper) : 13 seconds or less (at full size and 600 dpi × 300 dpi, with plain A4 L or Letter L paper) *If the Start key is pressed more than 3 seconds after opening and closing the Original Cover or Auto Document Feeder after the engine has warmed up
First print time First copy time
G-2
Zoom Ratios Metric Size Full size Enlargement Fixed Reduction Variable Lens Exposure Lamp Fusing temperature ×1.00 ×1.15 ×1.41 ×2.00 ×0.81 ×0.70 ×0.50 English Size ×1.00 ×1.29 ×1.54 ×2.00 ×0.78 ×0.64 ×0.50
×0.50 to ×2.00 (in ×0.01 increments) : Through lens (F=5.0, f=27.195) : Cold Cathode Florescent Lamp : 200 °C
Power /Current Consumption (main unit only) Voltage 110 V, 120-127 V 220-240 V Power source Main unit dimensions (including Original Cover) Main unit weight Maximum power consumption 700, 770-880 W 740-830 W : 110 V, 120V-127 V, 220-240 V 50/60 Hz : Width....508 mm (20 inches) Depth....608 mm (24 inches) Height...408 mm (16 inches) : 14.9 kg (32-3/4 lb.)
(2)
GDI Printer Function : Share with copier. : IEEE 1284 (Parallel), USB Revision 1.1 (except for Windows 95 and Windows NT) : GDI : Windows : Windows XP (SP1 or later)/Windows 2000 (SP3 or later)/ Windows NT Workstation Version 4.0 (SP6a or later)/Windows Me/Windows 98 (SP1)/Windows 98 Second Edition/ Windows 95 OSR : Internet Explorer 4.0 or later
RAM Interfaces Printer Language Fonts Supported Operating Systems
Web Browser
G-3
2.
2-1.
PRECAUTIONS FOR INSTALLATION
Installation Site
To ensure utmost safety and avoid breakdown, the printer should NOT be used in a place: · Where it will be subjected to extremely high or low temperature or humidity. · Where it will be subjected to sudden fluctuations in either temperature or humidity. · Which is exposed to direct sunlight. · Which is in the direct air stream of an air conditioner, heater, or ventilator. · Which has poor ventilation or is dusty. · Which does not have a stable, level floor or where it will receive undue vibration. · Which is near any kind of heating device. · Which is near volatile flammables (thinner, gasoline, etc.). · Where it may be splashed with water and electric leakage is likely to occur. · Which puts the operator in the direct stream of exhaust from the printer. · Where ammonia gas might be generated.
2-2.
Power Source
· If any other electrical equipment is sourced from the same power outlet, make sure that the capacity of the outlet is not exceeded. · Use a power source with little voltage fluctuation. · Never connect by means of a multiple socket any other appliances or machines to the outlet being used for the printer. · Ensure that the printer does not ride on the power cord or communications cable of other electric equipment, and that it does not become wedged into or underneath the mechanism. · Make the following checks at frequent intervals: Is the power plug abnormally hot? Are there any cracks or scrapes in the cord? Has the power plug been inserted fully into the outlet? Does something, including the printer itself, ride on the power cord? Use an outlet with a capacity of 110/120/127 V, or 220-240V.
G-4
3.
3-1.
PRECAUTIONS FOR USE
To Ensure the Printer is Used in an Optimum Condition
· Never place a heavy object on the printer or subject the printer to shocks. · Insert the power plug all the way into the outlet. · Do not attempt to remove any panel or cover that is secured while the printer is in a print cycle. · Do not turn OFF the printer while it is in a print cycle. · Provide good ventilation if the printer is to be used for a long time in a narrow room. · Never use flammable sprays near the printer. · If the printer becomes inordinately hot or produces abnormal noise, immediately turn it OFF and unplug it. · Do not turn ON the power switch at the same time that you plug the power cord into the outlet. · When unplugging the power cord, do not pull on the cord; hold the plug and pull it out. · Do not bring any magnetized object near the printer. · Do not place a vase or vessel containing water on the printer. · Be sure to turn OFF the power switch at the end of the workday or upon power failure. · Use care not to drop paper clips, staples, or other small pieces of metal into the printer.
3-2.
Operating Environment
The operating environmental requirements of the printer are as follows. · Temperature: 10 to 30 °C · Humidity: 15 to 85 % · Rate of temperature change: 10 °C/h · Rate of humidity change: 20 %Rh/h
3-3.
Power Requirements
The power source voltage requirements are as follows. · Voltage fluctuation: AC110 V -10 %, AC127 V +6 % (Function) AC220-240 V ± 10 % (Function) AC110 V -15 %, AC127 V +6 % (Paper Feeding) AC220-240 V +10 %, -15 % (Paper Feeding) · Frequency fluctuation: 50/60 Hz ± 3 Hz
G-5
4.
HANDLING OF THE CONSUMABLES
Before using any consumables, always read the label on its container carefully. · Paper can easily damp. To prevent absorption of moisture, store paper in a place with little moisture. · Keep consumables out of the reach of children. · Do not touch the PC Drum with bare hands. · The same sized paper is of two kinds, short grain and long grain. Short grain paper should only be fed through the printer crosswise, while long grain paper should only be fed lengthwise. The wrapper of the paper is properly marked. · If your hands become soiled with toner, wash them with soap and water. · Do not throw away any used consumables. They are to be collected. · Do not burn, bury in the ground, or throw into the water any consumables. · Do not store consumables in a place which: Is hot and humid. Is subject to direct sunlight. Has an open flame nearby.
5.
MISCELLANEOUS PRECAUTIONS
Use the following precautions when performing service jobs for a printer that uses a laser. · When a service job needs to be performed in the laser beam path, such as when working around the Print Head Unit or PC Drum, be sure first to unplug the power cord of the printer from the outlet. · If the service job requires that the power cord be left plugged in, observe the following precautions: 1. Take off your watch, ring, and any other reflective object and wear laser protective goggles. 2. Keep users away from the job site. 3. Do not bring a highly reflective tool into the laser beam path during the service job.
G-6
6.
PARTS IDENTIFICATION
1
2
6 3
5
4
4980G001AA
1. Automatic Document Feeder AF-11 2. Mechanical Counter 3. Expansion memory 32-5 (32 MB)
4. Paper Feed Cassette PF-125 5. Main Unit D 16G 6. Original Cover OC-7
G-7
MECHANICAL/ ELECTRICAL
1.
COMPONENTS LAYOUT
1
2
8 3 7 6 5 4
4980M004AA
1: IR Unit 2: Exit Roller 3: Fusing Unit 4: Image Transfer Section
5: Paper Take-Up Roller 6: Toner Cartridge 7: Drum Cartridge 8: Print Head (PH) Unit
M-1
2.
COPY PROCESS
4980M018AC
1. PC Drum · A photoconductive layer is formed on an aluminum tube and an electrostatic latent image is formed on this photoconductive layer. 2. PC Drum Charging · Deposits a negative DC charge across the entire surface of the PC Drum. 3. Photoelectric Conversion · The CCD Sensor converts the image data represented by light reflected off the original to a corresponding analog electric signal which, in turn, is output to the IR image processing section. 4. IR Image Processing · The electric signal is converted to an 8-bit digital image signal (A/D conversion) which, in turn, goes through appropriate correction processes before being output to the PH image processing section. 5. PH Image Processing · After going through correction processes, the digital image signal is converted to a corresponding electric signal (D/A conversion), based on which control is provided for turning ON or OFF the laser. 6. Laser Exposure · The laser beam strikes the surface of the PC Drum, forming an electrostatic latent image. 7. Developing · Toner negatively charged in the Developer Mixing Chamber is attracted onto the electrostatic latent image, changing it to a visible, developed image. · A developing bias voltage (Vb) is applied to the Sleeve Roller to prevent toner from being attracted onto those areas of the PC Drum that correspond to the background areas of the original.
M-2
8. Paper Feed · Paper is fed from Tray 1. 9. Bypass Paper Feed · Paper is fed from the Multiple Bypass Tray. 10. Image Transfer · A DC positive charge is applied to the Image Transfer Roller to transfer the visible image on the surface of the PC Drum onto the paper. 11. Paper Separation · The Charge Neutralizing Plate neutralizes any charge left on the paper. 12. Recovery · The residual toner on the surface of the PC Drum is temporarily recovered and is made into even finer particles during the print end sequence before being recovered at the Developing Unit. 13. Paper Transport · The paper is transported onto the Fusing Unit. 14. Fusing · The developed image is permanently fused to the paper by a combination of heat and pressure applied by the Right and Left Fusing Rollers. 15. Paper Exit · The paper is fed out onto the Exit Tray.
M-3
3.
PAPER PATH
Exit Roller
Exit Tray
Fusing Roller
Multiple Bypass Tray
Tray 1
Paper Take-Up Roll
Image Transfer Roller
4980M005AA
· The system employs a two-way paper supply system, in which paper is fed from either Tray 1 or the Multiple Bypass Tray. · When the optional Paper Feed Cassette is mounted, the system offers a three-way paper supply system. · The paper taken up and fed in by the Paper Take-Up Roll is transported through the printer by the Image Transfer Roller, Fusing Roller, and Exit Roller and fed out of the printer face down onto the Exit Tray.
M-4
4.
DRIVE SYSTEM
1 6
5
2
3
4
4980M010AA
1: Scanner Unit 2: Image Transfer Roller 3: Paper Take-up Roller
4: Main Motor 5: Scanner Motor 6: Fusing Roller
M-5
5.
5-1.
(1)
OPERATING SEQUENCE
Print Start Sequence
When the pre-start control is not provided
Start key ON Polygon Motor Main Motor Paper TakeUp Solenoid /S1 Drum Charge Output Exposure Output Developing Output Image Transfer Output Drum charge DC Drum charge DC
Charge
Reverse bias
Charge
Reverse bias
ON
Unexposed area output
Negative output
Negative output
4980M013AA
M-6
(2)
When the pre-start control is provided
Start key ON Polygon Motor Main Motor
Paper Take-Up Solenoid
/S1
Drum Charge Output Drum charge DC Drum charge DC
Exposure Output
Developing Output
Charge
Reverse bias
ON
Image Transfer Output
Unexposed area output
Negative output
4980M017AB
5-2.
PS3
Print End Sequence
ON
Polygon Motor Main Motor Drum Charge Output Laser Output
ON
ON
DC
AC
Unexposed area illumination
Substantially entire surface exposure
Unexposed area illumination Charge
Developing ON Output
Reverse bias Negative Positive
4980M014AA
Image Transfer Output
Negative
M-7
6.
6-1.
IC (IMAGING CARTRIDGE) SECTION
Overview
· The illustration below shows the construction of the Toner Cartridge and the Developing Unit. · This printer adopts the single-component FMT, or Fine Micro Toning, developing system. · The Toner Agitating Screw conveys toner in the Toner Cartridge onto the Toner Supply Roller. · The Toner Supply Roller transports the toner to the Sleeve Roller. The Resin Sleeve of the Sleeve Roller carries the toner onto the PC Drum to form a toner image on the latent image formed on the surface of the PC Drum.
Imaging Cartridge (T/C + D/C)
PC Drum
T/C
Toner Hopper Toner Agitating Screw Toner Supply Roller 2nd Toner Blade Sleeve Roller
4136M504AA
1st Toner Blade
Resin Sleeve
4136M529AA
Bias Seal
M-8
· The Imaging Cartridge consists of a T/C (Toner Cartridge) and a D/C (Drum Cartridge) (see the illustration below). D/C (Drum Cartridge) Imaging Cartridge
4136M511AA
4136M513AA
T/C (Toner Cartridge)
M-9
6-2.
PC Drum
· The PC Drum used in this printer is the organic photoconductor (OPC) type. · The drum consists of two layers - Charge Transport Layer (CTL) and the Charge Generating Layer (CGL) - applied to an aluminum alloy base (cylinder). Handling Precautions: The PC Drum of this type exhibits light fatigue after being exposed to light for a long time, which results in its sensitivity being changed. Therefore, always wrap the drum in the PC Drum Cloth or a soft cloth immediately after it has been removed from the printer. Use utmost care to prevent the surface of the PC Drum from being dirtied.
CTL CGL Aluminum Cylinder
1167M007AA 1139M007AA
· Grounding of the PC Drum The ground contact point (Ground Plate) for the PC Drum is located inside the PC Drum at its front side. It is, at all times, in contact with the shaft of the front plate of the Imaging Cartridge. When the Imaging Cartridge is loaded in the printer, the set pin of the front plate of the Imaging Cartridge contacts a side plate on the printer side, thereby providing grounding. The potential on the surface of the PC Drum exposed to the laser beam is then grounded through the Ground Plate, shaft, and set pin to the frame of the printer.
PC Drum Front Plate
Shaft
Ground Plate
4136M514AB
M-10
6-3.
Developing System
· The 1st Toner Blade located above the Sleeve Roller spreads a thin, even coat of toner over the Sleeve Roller. · A negative charge is applied to the 2nd Toner Blade, which negatively charges the toner. · The Sleeve Roller is negatively charged, which retains the toner thereon. · The toner sticks to the area on the surface of the PC Drum that has been exposed to the laser beam. · The Bias Seal on the underside of the Sleeve Roller separates toner, which has not been attracted onto the surface of the PC Drum, from the Sleeve Roller and returns it back to the Toner Hopper. The same bias as that applied to the Sleeve Roller is applied to this Bias Seal, thereby preventing toner from falling. · The developing bias automatically adjusts the print image density over a range of seven steps through feedback control. A bias voltage, reversed from the developing bias, is applied before a print command is issued, before predrive, and during predrive, to prevent toner from sticking to the surface of the PC Drum. 2nd Toner Blade PC Drum
1st Toner Blade Sleeve Roller
Bias Seal
4136M505AA
Toner Blade Voltage Terminal
Developing Voltage Terminal Developing Lower Seal (Bias Seal) Terminal
Toner Supply Roller
Developing Lower Seal (Bias Seal) Terminal
0992S24
Developing Voltage Terminal Toner Blade Voltage Terminal
M-11
6-4.
(1)
Detection of Toner Cartridge
Installation detection
· The Imaging Cartridge, when loaded in position, is detected as follows. At the completion of a warm-up cycle, the IC chip built into the Toner Cartridge (TC detection board) detects electrically whether or not the cartridge is loaded in position. (2) Interchangeability detection
· The built-in IC chip (TC detection board) detects the applicable marketing area of the Toner Cartridge when power is turned ON or when the Front Door is opened and closed. TC Detection Board
4136M540AA 4136M537AB
(3)
Toner Near Empty and Toner Empty Detection
· The Toner Empty Detection Sensor detects the amount of toner still available for use. Toner Empty Detection Sensor (TE1)
4136M540AA
M-12
· The Toner Empty Detection Sensor has an LED and a reflecting light detection sensor built into it. Light from the LED enters the toner detection window and is reflected off the Reflection Mirror located inside the Toner Cartridge. The reflecting light detection sensor detects this reflected light. Toner Detection Window
4136M540AA
When a Sufficient Amount of Toner is Left Toner Agitating Blade
When There is only a Small Amount of Toner left Reflection Mirror
Toner LED LED Reflecting Light Detection Sensor
4980M011AA
· The number of times, at which the input voltage to the reflecting light detection sensor exceeds a predetermined period of time, is counted. When this count reaches a predetermined value, a toner near empty or a toner empty condition is detected. · The toner near empty or toner empty condition is reset when the Front Door is opened and closed. Electrical Component TE1 Control Signal PWB-P MPJ14-2 Blocked H Unblocked L WIRING DIAGRAM A-5
M-13
7.
(1)
DRUM CHARGE
Overview
· The PC Drum is charged with static electricity before laser exposure. · The Drum Charge Brush and the Pre-charge Film are used for charging. · Since the Drum Charge Brush and the Pre-charge Film directly deposit charge on the PC Drum, they produce little ozone. Further the charging voltage is low and the deposited charge is even and stable across the surface of the PC Drum. · The Pre-charge Film supplies a preliminary charge to the PC Drum prior to charging by the Drum Charge Brush, thereby increasing charging efficiency. Paper Dust Remover Drum Cover
Drum Cartridge
Drum Charge Brush
Pre-charge Film
PC Drum
4136M519AA
1
1. Drum Charge Brush 2. PC Drum 3. Ground 4. Charge Bias
2
4
3
4136M528AA
M-14
8.
8-1.
IR SECTION
Image Data Processing
1. Photoelectric Conversion · The CCD Sensor reads the light reflected off the original and converts the data to a corresponding analog signal. 2. A/D Conversion · The analog signal output from the CCD Sensor is converted to a corresponding 8-bit digital signal. 3. Shading Correction · Corrected is an error that occurs due to variations in sensitivity of each CCD chip and the light distribution varying along the length of the Exposure Lamp. 4. Gamma Correction · The light reflection data read by the CCD Sensor is translated to corresponding image density data. 5. Zoom Processing · The synchronous timing of the input data (write) and output data (read) is varied to decrease (reduction) or increase (enlargement) the number of data readings, thereby reducing or enlarging the image in the main and sub scanning direction. 6. Background Level Detection · The background of the original is detected to establish a threshold value between the background and the image data. 7. Binarization · The 8-bit image data is translated to one-bit (binary) data. 8. Data Buffer · The binarized image data is amplified. · The data is transmitted to the PH Section.
M-15
8-2.
Exposure Components Section
CCD
Lens
1
4
5
3
2
4980M019AA
1. Exposure Lamp · A CCFL lamp is used to illuminate the surface of the original. 2. 1st Mirror · Reflects the light reflected off the surface of the original, directing it to the 2nd Mirror. 3. 2nd Mirror · Reflects the light reflected off the 1st Mirror, directing it to the 3rd/5th Mirror. 4. 3rd/5th Mirror · Reflects the light reflected off the 2nd Mirror, directing it to the 4th Mirror. · Reflects the light reflected off the 4th Mirror, directing it to the CCD through the Lens. 5. 4th Mirror · Reflects the light reflected off the 3rd Mirror, directing it to the 3rd/5th Mirror.
M-16
8-3.
(1)
Scanner Drive Mechanism
Scanner Drive Mechanism
· The Scanner Motor drives the Scanner Assy through the Timing Belt.
Scanner Motor (M4)
Scanner Assy Timing Belt
4980M002AA
8-4.
Scanner Motor Drive Control
· The speed at which the Scanner moves (for scan and return motion) is controlled by varying the period of the motor drive pulse that is timed with the reference clock.
High speed
Low speed Period · The number of motor drive pulses as determined according to the paper size and zoom ratio controls the amount of movement of the Scanner. Electrical Component M4 Control Signal PWB-P P105P-1~4 ON OFF WIRING DIAGRAM B~C-7
Pulse output
M-17
9.
9-1.
PRINT HEAD (PH)
Construction
· The laser beam light emitted from the Print Head is used to scan the image as driven by the Polygon Motor.
SOS Sensor Semiconductor Laser
G1 Lens G2 Lens
1st Mirror
2nd Mirror SOS Mirror
4136M005AA
Polygon Mirror
M-18
9-2.
Laser Exposure Process
· The laser beam light emitted from the Print Head is used to create an electrostatic latent image on the surface of the PC Drum. · The following control is provided to correctly time image printing. Print Head Unit Polygon Motor Laser Diode
SOS Sensor
PC Drum
4136M006AB
· When the printer receives a PRINT signal, the Polygon Motor and the Main Motor start rotating and the paper is taken up and fed into the printer. · The printing is started when the Controller/Mechanical Control Board sends a VIDEO signal to the Print Head a given period of time after the leading edge of the paper actuates the Paper Take-Up Switch (TOD signal). · The print start position of a new line as shifted from the previous one is established by transmitting a VIDEO signal after the lapse of an appropriate period of time with reference to the SOS Sensor signal. · The SOS Sensor provided in the PH ensures that the laser beam is emitted at the same timing for all lines in the main scanning direction.
M-19
9-3.
Laser Emission Timing
· When a READY signal is detected a given period of time after the print command has been issued, the Controller/Mechanical Control Board outputs a laser ON signal. · The laser ON signal makes a laser beam to be emitted and the laser beam travels to the Polygon Mirror, G1 Lens, and the SOS Mirror to eventually hit the SOS Sensor, which generates an SOS signal. · The SOS signal determines the laser emission timing for each line in the main scanning direction.
Polygon Mirror SOS Mirror G1 Lens
Laser Unit SOS Sensor
4136M517AA
M-20
9-4.
(1)
Laser Emission Area
Main scanning direction
· The print start position is determined by the main scanning print start signal (/HSYNC) output from the Controller/Mechanical Control Board and the width of the paper. · The laser emission area is determined by the paper size. (2) Sub-scanning direction
· The print start position is determined by the sub-scanning print start signal (/TOD) output from the Controller/Mechanical Control Board and the length of the paper. · The laser emission area is determined by the paper size. /HSYNC /VIDEO /VIDEO /TOD
4980M016AB
M-21
10. PAPER TAKE-UP SECTION
10-1.
(1)
Tray 1
Paper take-up mechanism
· When the Paper Take-Up Solenoid is energized, drive from the Main Motor is transmitted to the Paper Take-Up Roll through the Paper Take-Up Clutch, turning the Paper Take-Up Roll. · At the same time, the Depressing Cam turns so as to raise the Paper Lifting Plate. Then, the top sheet of paper loaded in the tray is taken up and fed into the printer. · The actual length of paper is detected based on the period of time through which the Paper Take-Up Switch remains actuated (or through which the paper moves past the switch) and the system speed. It is then determined whether or not the actual length matches the paper length specified on the controller. Paper Take-Up Roll Paper Take-Up Switch (S1)
Gear with Depressing Cam
Tray
Paper Take-Up Solenoid (SL-1)
4980M006AA
Standby Tray
When Paper is Taken up Depressing Cam
4136M556AA
4136M557AA
M-22
Electrical Parts S1 SL1 (2)
Control Signal PWB-P MPJ10P-2 PWB-P MPJ3P-2
ON L L
OFF H H
WIRING DIAGRAM F-3 I-3
Double feed preventive mechanism
· A fixed paper separator pad is used to prevent the second and subsequent sheets of paper from being taken up and fed in with the first one. (3) Paper empty detection
· There are the Multipurpose Tray Paper Empty Sensor (PE1) and the Multiple Bypass Tray Paper Empty Sensor (PE2) provided on the upper part of Tray 1. They function to detect paper loaded in Tray 1 and the Multiple Bypass Tray, respectively. · When there is a paper stack loaded in the tray, the actuator is raised to block the Paper Empty Sensor. · When paper runs out, the actuator drops into the hole in the tray, unblocking the Paper Empty Sensor. Multipurpose Tray Paper Empty Sensor (PE1)
Actuator
Multiple Bypass Tray Paper Empty Sensor (PE2)
4980M007AA
Electrical Parts PE1 PE2 (4)
Control Signal PWB-P MPJ12P-3 PWB-P MPJ15P-3
Blocked L L
Unblocked H H
WIRING DIAGRAM A-5 B-5
Paper take-up retry function
· To reduce the number of paper misfeeds as a result of a paper take-up failure, a paper take-up retry sequence is carried if the Paper Take-Up Switch is not actuated and deactuated within a predetermined period of time. · This function is provided for paper take-up from any printer paper tray.
M-23
11. IMAGE TRANSFER
11-1. Overview
· The toner image formed on the surface of the PC Drum during the developing process is transferred onto the paper. · This printer adopts the roller image transfer system, in which the Image Transfer Roller is used to transfer the image onto the paper. · In the roller image transfer system, the paper is pinched between the PC Drum and the Image Transfer Roller at all times during the print cycle. This results in a very little amount of ozone being produced and there is a little chance of a double transferred image occurring. · To clean the Image Transfer Roller, reverse bias is applied to the Image Transfer Roller. · The cleaning sequence is carried out when the printer is started, a print command is issued, a print cycle is completed, and when the printer is started after a misfeed has been cleared. · There is the Charge Neutralizing Needle installed for neutralizing the paper after image transfer. PC Drum
Paper Image Transfer Roller
4121s034
Paper PC Drum Charge Neutralizing Needle Image Transfer Roller
Reverse Bias
Image Transfer Bias
4136M515AA
M-24
12. FUSING UNIT
12-1. Overview
· The toner image transferred onto the paper is securely fixed to the paper. · A heated roller system is used as the fusing system. The paper, to which the toner image has been transferred, is fed between the Fusing Roller heated by the Fusing Roller Heater Lamp and the Pressure Roller. This permanently fixes the toner image in the paper. Fusing Paper Separator Finger Actuator
Thermostat (TS1) Exit Sensor (PS1)
Thermistor (TH1)
Pressure Roller
Fusing Roller Heater Lamp (H1) Fusing Roller Fusing Entrance Guide Plate
4136M520AA
Electrical Parts PS1 Electrical Parts TH1 Electrical Parts H1
Control Signal PWB-P MPJ8P-3 Control Signal PWB-P MPJ2P-1 Control Signal PU-1 CN1PU-1-3
Blocked L
Unblocked H
WIRING DIAGRAM F~G-2
Low temp.
High temp. WIRING DIAGRAM F-2 to 3 WIRING DIAGRAM I-7
Analog Input ON L OFF H
M-25
12-2.
(1)
Fusing Temperature Control
Temperature changes (plain paper having a length of 186 mm or more) Temperature detected by Thermistor Warm-up
200 °C Fusing Roller Temperature During print cycle (600 dpi)
130 °C
In standby
Mode 0: 180 sec.
Mode 1: 300 sec.
Mode 2: 208 sec.
Mode 3
Thermistor-detected temperature at temperature control start Less than 50 °C 50 °C to 125 °C Power OFF, Front Door open/close Mode before temperature control Mode 0 Mode 1 Mode 2 Mode 3 (2) Temperature control Mode 1 Mode 2 Mode 0 Mode 0 Mode 2 Mode 1 Mode 3 125 °C or more Mode 0 Mode 3
· The fusing temperature is increased to a predetermined level during the warm-up cycle. · The warm-up control is provided when power is turned ON, the Front Door is opened and closed, and the Energy Save mode is canceled. · In the standby state, the fusing temperature is set to a level (130 °C) lower than that during a print cycle, thereby cutting down power consumption. · The temperature control mode when the control is resumed (when power is turned ON, the Front Door is opened and closed, or the Energy Save mode is canceled) is set according to the mode and the fusing temperature valid before the interruption. · In the Energy Save mode, the Fusing Roller Heater Lamp is turned OFF to reduce power consumption.
M-26
(3)
Temperature control mode
The fusing temperature is controlled during a print cycle according to the period of time elapsed from the completion of the warm-up cycle. · Mode 0 Mode 1 lasts for 3 min. If the temperature detected by the Thermistor is 50 °C or more when mode 0 is interrupted, the operation is switched to mode 1. Mode 1 starts when mode 0 is completed. · Mode 1 Mode 1 lasts for 5 min. During this period, the printing temperature is gradually decreased. As the printing temperature is reduced down to a predetermined level, mode 1 is completed and mode 2 starts. · Mode 2 Mode 2 lasts for 208 sec. · Mode 3 Mode 3 continues until the temperature control is interrupted (by opening and closing the Front Door, etc.). (4) Printing temperature by paper type in different temperature control modes Mode 0 Standby 186 mm or more Less than 186 mm Thick paper, envelopes, postcards 186 mm or more Less than 186 mm 185 °C 200 °C Mode 1 130 °C Mode 2 130 °C Mode 3 130 °C
200 °C (standard) 215 °C 200 °C (set in Tech. Rep. Mode) *1 200 °C 190 °C 205 °C 215 °C 205 °C 185 °C 175 °C
Plain paper
OHP
*1: Inferior fusing performance can at times result from plain paper (having a length of 186 mm or more) with the standard fusing temperature setting (200 °C). The "FUSER TEMP Ad" setting of Tech. Rep. Choice available from the Tech. Rep. Mode can therefore be used to set a higher fusing temperature.
M-27
(5)
Fusing temperature protect control Fusing Unit Thermistor (TH1) ANIN Comparative Voltage CPU Comparator High-temperature Protect Signal
Fusing Roller Heater Lamp Thermostat (TS1)
FUSER_LAMP FUSER_LAMP_ RY
T2 T1 Triac
AC
Controller/Mechanical Control Board
Power Unit
4980M015AB
· The comparator provided on the Controller/Mechanical Control Board is used as means for detecting an abnormally high temperature through software approach. If the temperature detected by the Thermistor (voltage value) is greater than the comparative temperature 235 °C (voltage value), the triac relay is turned OFF to shut down the output of the Heater Lamp. · As a protection should there be a software failure, the Thermostat is used to shut down current to the Heater Lamp when the temperature of the Fusing Roller becomes inordinately high. Electrical Component TH1 Electrical Component H1 Control Signal PWB-P MPJ2P-1 Control Signal PU-1 CN1PU-1-3 Low temp. High temp. WIRING DIAGRAM F-2~3 WIRING DIAGRAM I-7
Analog Input ON L OFF H
M-28
13. PAPER EXIT
13-1. Paper Exit Mechanism
· The paper exit mechanism transports the paper that has been subjected to the fusing process onto the Exit Roller. · The Exit Sensor detects not only a paper misfeed but also an open Upper Cover.
Exit Tray Exit Roll Face-down Exit
Exit Sensor (PS1)
Exit Roller
4136M516AA
Electrical Parts PS1
Control Signal PWB-P MPJ8P-3
Blocked L
Unblocked H
WIRING DIAGRAM F to G-2
M-29
14. MISCELLANEOUS
14-1. Cooling of the Printer Interior
· The Cooling Fan Motors provided on the right and left frames of the printer draw outside air from the outside into the printer interior and discharge heat inside the printer out. It thereby prevents the temperature of the PH Unit and the printer interior from increasing.
Cooling Fan Motor 1 (M3) PH Unit
Cooling Fan Motor 2 (M2)
4980M001AA
Electrical Parts M2 M3
Control Signal PWB-P MPJ13P-1 to 4 PWB-P MPJ6P-1 to 4
ON
OFF
WIRING DIAGRAM I-3 I-3
Pulse Pulse
M-30
14-2.
Original Cover Open/Close Detection Mechanism
· There is a magnet provided in the Original Cover, allowing the printer to detect the position of the cover whether the cover is raised or lowered. · This magnet attracts the Original Cover Set Sensor provided on the printer side, thus activating the sensor. The printer will then detect the position of the Original Cover. Magnet
Original Cover Set Sensor (PS2)
4980M008AA
Electrical Parts PS2
Control Signal PWB-O P701O-1 to 2
Blocked L
Unblocked H
WIRING DIAGRAM F-9
M-31
MAINTENANCE
1.
MAINTENANCE SCHEDULE
· To ensure that the printer produces good printed pages and to extend its service life, it is recommended that the maintenance jobs described in this schedule be carried out as instructed. Ref. Page in This Manual E-3
PM Parts
Clean When a paper take-up failure occurs
Replace 1
Replace 2
Paper Take-Up Roll Image Transfer Roller Drum Cartridge Toner Cartridge Fusing Unit
Replace when a paper take-up failure occurs 50K 20K 6K 50K 16K 4.3K
E-4 E-7 E-5 E-8
Replace 1: Average number of prints during continuous printing Replace 2: Average number of prints during intermittent printing (2 pages/job) NOTES · K = 1,000 printed pages · As a rule, the Drum Cartridge and Toner Cartridge are to be replaced by the user. · The contents of the Maintenance List are subject to change without notice. · For the part numbers, see Parts Manual and Parts Modification Notice.
E-1
1-1.
Guidelines for Life Specifications Values by Unit
· The life specifications value represents the number of printed pages produced or figures equivalent to it when given conditions (see the Table given below) are met. It can be more or less depending on how each individual printer is used. Print Conditions Job type Paper size B/W ratio (1) Life Specifications Values Unit name Toner Cartridge Life value 4.3 K Detection The remaining amount of toner is detected. A "TONER EMPTY" error is detected according to this value. 2P/J A4 L/Letter L B/W 6 %
E-2
2.
(1)
REPLACEMENT/CLEANING OF PARTS
Cleaning of the Paper Take-Up Roll
1. Remove the Imaging Cartridge. E-5 NOTE · The Imaging Cartridge is the Drum Cartridge, to which the Toner Cartridge is mounted. 2. Using a soft cloth, wipe the surface of the Paper Take-Up Roll clean of dirt.
(2)
Replacement of the Paper Take-Up Roll
1. Remove the Imaging Cartridge. E-5 2. Remove the Paper Take-Up Roll.
AA600E0894 AA700E0894
E-3
(3)
Replacement of the Image Transfer Roller
1. Remove the Imaging Cartridge. E-5 2. Place the levers of the bushings (white) on the right and left ends of the Image Transfer Roller toward this side and remove the Image Transfer Roller from the Image Transfer Roller holder.
AA810E6314
3. Pull out the bushings on the right and left ends, and the gear, from the Image Transfer Roller removed from its holder. Install the bushings and the gear to the new Image Transfer Roller. NOTES · Do not touch, or dirty with chemicals or toner, the surface of the Image Transfer Roller, as indentations in and dirt on the surface of the Image Transfer Roller adversely affect the quality of the printed image. · When handling the Image Transfer Roller, hold onto the shaft and bushings of the roller. · Do not place a new Image Transfer Roller directly on the floor or other surface.
BA910E6314 BA020E6314
4. Insert the new Image Transfer Roller into the Image Transfer Roller holder and place the levers of the bushings into the original upward positions.
E-4
3.
(1)
REPLACEMENT OF UNITS
Replacement of the Toner Cartridge
1. Lift up the Exit Tray and remove it. 2. Open the Front Door.
1. Take out a new Toner Cartridge and shake it in the horizontal direction sufficiently so that toner is agitated. NOTE · Placing the Toner Cartridge in an upright position or shaking it vigorously will spill toner.
AA800E6314
AA900E0894
3. Remove the Imaging Cartridge.
CA700E6314
AA600E6314
4. Pull the lever of the Toner Cartridge in the direction shown in the illustration and disconnect the Toner Cartridge from the Drum Cartridge. NOTE · If the Drum Cartridge is to be placed on a floor or similar place, use care to prevent toner from scattering around.
E-5
2. Remove the protective cover from the Toner Cartridge.
Precautions for Replacing the Toner Cartridge · Different types of Toner Cartridges are available for different regions. Therefore, check the Toner Cartridge type before replacing it. US & Canada: Toner Cartridge 101 C Europe: Toner Cartridge 101 A Other regions: Toner Cartridge 101 B
CA940o6314C
3. Install the new Toner Cartridge to the Drum Cartridge. NOTE · Insert the Toner Cartridge along the guide provided on the Drum Cartridge side and make sure that the Toner Cartridge is not tilted when inserted.
CA900E6314
4. Install the Imaging Cartridge in the printer. NOTE · Insert the Imaging Cartridge along the guide provided on the printer side. Ensure that the Imaging Cartridge is not slid obliquely. 5. Close the Front Door.
CA920o0894C
E-6
(2)
Replacement of the Drum Cartridge
1. Remove the Imaging Cartridge. E-5 2. Pull the lever of the Toner Cartridge in the direction shown in the illustration and disconnect the Drum Cartridge.
1. Mount the Toner Cartridge to a new Drum Cartridge. NOTE · Insert the Toner Cartridge along the guide provided on the new Drum Cartridge side and make sure that the Toner Cartridge is not tilted when inserted.
CA210E6314
AA010E6314
CA110E6314
2. Install the Imaging Cartridge in the printer. NOTE · Insert the Imaging Cartridge along the guide provided on the printer side. Ensure that the Imaging Cartridge is not slid obliquely. 3. Close the Front Door. NOTE · After replacing the Drum Cartridge, be sure to reset the I/C counter in the Service Mode.
E-7
(3)
Replacement of the Fusing Unit
NOTE · Immediately after turning off the printer, the area around the Fusing Unit is extremely hot. Therefore, in order to reduce the risk of burns, wait until the unit has cooled down before performing any operation. 1. Remove the Rear Cover. D-7 2. Unplug one connector on the Controller/Mechanical Control Board.
CA100E0894
AA440U0894
AA400E0894
3. Remove the two screws, and then remove the Left Rear Cover.
4. Remove the three screws, and then remove the Circuit Board and Metal Bracket.
AA800E0894
5. Remove the Upper Left Cover. 6. Remove the two screws, and then remove the Upper Right Cover and Protective Metal Bracket. NOTE · The Protective Metal Bracket is tightened together with the Upper Right Cover.
E-8
7. Remove two screws, unplug three connectors, and remove the Fusing Unit. NOTE · The surfaces around the Fusing Unit are very hot. Use utmost care not to touch any surfaces other than the Fusing Unit.
BA200E0894
8. Remove the Fusing Unit.
A B 1. Connect connector A. 2. Mount the Fusing Unit in the printer and secure it in position by tightening the two screws. 3. Connect connectors B and C. C NOTE · When installing the Fusing Unit, route the harness as shown in the illustration and make sure that no part of the harness is wedged between the Fusing Unit and printer.
NOTE · When replacing a part comprising the Fusing Unit individually to correct an image problem or a defective part, see D-26 ("Disassembly of the Fusing Unit" of DIS/REASSEMBLY, ADJUSTMENT).
CA710E6314
AA300E0894
E-9
DIS/REASSEMBLY, ADJUSTMENT
1.
1-1.
SAFETY INFORMATION
Laser Safety
· This is a digital machine certified as a class 1 laser product. There is no possibility of danger from a laser, provided the machine is serviced according to the instruction in this manual.
1-2.
Internal Laser Radiation
Semiconductor laser
Maximum power of the laser diode Maximum average radiation power(*) Wavelength *:Laser Aperture of the Print Head Unit
15 mW 36.903 µW 770-800 nm
· 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
D-1
BA350o0894C
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 D-4 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 Wavelength All Areas CAUTION Use of controls, adjustments or performance of procedures other than those specified in this manual may result in hazardous radiation exposure. Semiconductor laser Maximum power of the laser diode Wavelength Denmark ADVARSEL Usynlig Laserstråling ved åbning, når sikkerhedsafbrydere er ude af funktion. Undgå udsættelse for stråling. Klasse 1 laser produkt der opfylder IEC60825 sikkerheds kravene. Halvlederlaser Laserdiodens højeste styrke Bølgelængden 15 mW 770-800 nm 15 mW 770-800 nm 15 mW 770-800 nm
D-2
Finland, Sweden VARO! Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättömälle lasersäteilylle. Älä katso säteeseen. LOUKAN 1 LASERLAITE KLASS 1 LASER APPARAT VAROITUS! Laitteen Käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saattaa altistaa käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälle lasersäteilylle. Puolijohdelaser Laserdiodin suurin teho Aallonpituus 15 mW 770-800 nm
VARNING! Om apparaten används på annat sätt än i denna bruksanvisning specificerats, kan användaren utsättas för osynlig laserstrålning, som överskrider gränsen för laserklass 1. Halvledarlaser Den maximala effekten för laserdioden Våglängden 15 mW 770-800 nm
VARNING! Osynlig laserstrålning när denna del är öppnad och spärren är urkopplad. Betrakta ej strålen. Norway ADVERSEL Dersom apparatet brukes på annen måte enn spesifisert i denne bruksanvisning, kan brukeren utsettes for unsynlig laserstråling som overskrider grensen for laser klass 1. Halvleder laser Maksimal effekt till laserdiode Bølgelengde 15 mW 770-800 nm
D-3
1-3.
Laser Safety Label
· A laser safety labels is attached to the outside of the machine as shown below.
1-4.
Laser Caution Label
· A laser caution label is attached to the inside of the machine as shown below.
D-4
AA160D0894
BA070D0894
1-5.
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 copier OFF. · If the job r