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Kyocera TASKalfa 2420w Service Manual

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TASKalfa 2420w

SERVICE

MANUAL

Published in June 2011

5J0SM061

Rev. 1

WWW.SERVICE-MANUAL.NET

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Page 1 More Service Manuals at www.service-manual.net TASKalfa 2420w SERVICE MANUAL Published in June 2011 5J0SM061 Rev. 1 WWW.SERVICE-MANUAL.NET...
Page 2 CAUTION RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS. It may be illegal to dispose of this battery into the municipal waste stream. Check with your local solid waste officials for details in your area for proper disposal. ATTENTION IL Y A UN RISQUE D’EXPLOSION SI LA BATTERIE EST REMPLACEE PAR UN MODELE DE TYPE INCORRECT.
Page 3: Revision History
Revision history Revision Date Replaced pages Remarks June 7,2011 Chapter10 WWW.SERVICE-MANUAL.NET...
Page 4 This page is intentionally left blank. WWW.SERVICE-MANUAL.NET...
Page 5: Safety Precautions
Safety precautions This booklet provides safety warnings and precautions for our service personnel to ensure the safety of their customers, their machines as well as themselves during maintenance activities. Service personnel are advised to read this booklet carefully to familiarize themselves with the warnings and precautions described here before engaging in maintenance activities.
Page 6: Safety Warnings And Precautions
Safety warnings and precautions Various symbols are used to protect our service personnel and customers from physical danger and to prevent damage to their property. These symbols are described below: DANGER: High risk of serious bodily injury or death may result from insufficient attention to or incorrect compliance with warning messages using this symbol.
Page 7: Installation Precautions
1. Installation Precautions WARNING • Do not use a power supply with a voltage other than that specified. Avoid multiple connections to one outlet: they may cause fire or electric shock. When using an extension cable, always check that it is adequate for the rated current...................... •...
Page 8 2. Precautions for Maintenance WARNING • Always remove the power plug from the wall outlet before starting machine disassembly....• Always follow the procedures for maintenance described in the service manual and other related brochures............................• Under no circumstances attempt to bypass or disable safety features including safety mechanisms and protective circuits.
Page 9 • Do not remove the ozone filter, if any, from the copier except for routine replacement....... • Do not pull on the AC power cord or connector wires on high-voltage components when removing them; always hold the plug itself......................•...
Page 10 This page is intentionally left blank. WWW.SERVICE-MANUAL.NET...
Page 11 This service manual includes the basic information about TASKalfa 2420w Multi-Function Printer, which is required when you during field service to maintain the product’s quality and reliability. Chapter 1 Introduction Overview (Features, specifications, name of parts and etc.) Chapter 2 Installation Installation requirements, method of installation, connection with PC &...
Page 12 Chapter 1 Introduction page 1. 1 Features 1- 2 1. 2 Specifications 1- 3 1. 2. 1 General 1- 3 1. 2. 2 Printer part 1- 4 1. 2. 3 Scanner part 1- 6 1. 3 Specifications for Originals 1- 7 1.
Page 13 1. 1 Features (1) TASKalfa 2420w is a Multi-Function Printer for scan, copy and print large format documents. Some of these features may be optional. (2) Front loading - front delivery structure saves the installation space. (3) Various media source; roll media feeding (1 roll), cut sheet manual feeding, Paper Tray multiple cut sheet feeder (option).
Page 14: Specifications
1. 2 Specifications 1. 2. 1 General Subject Specification Model TASKalfa 2420w Configuration Console Power consumption 1500w (US model) (Maximum) 1600w (Europe/Asia model) (Including Scanner & Controller Unit) Power consumption 13w or less (US model) (Low power mode) 13.5w or less (Europe/Asia model)
Page 15: Printer Part
1. 2. 2 Printer part Subject Specification Printing method LED Array Electro photography Photoreceptor Organic Photoconductive Drum Print speed 40mm per second (Inch) 1.7ppm/E 2.9ppm/D Landscape (Metric) 1.6ppm/A0 2.8ppm/A1 Landscape Print head LED Array Resolution of print head 600dpi x 600dpi Print width Maximum 914mm / “36”...
Page 16 Subject Specification Media source 1 Roll Deck (3” / 2” core roll) Manual Feeder (single cut sheet) Paper Tray (multiple cut sheet, option) Media (Recommended Roll Media) - US model: Bond : 64g/m to 80g/m , US Bond (20# Bond) Vellum : US Vellum (20# Vellum) Film...
Page 17: Scanner Part
1. 2. 3 Scanner part Subject Specification Scanning method Contact Image Sensor (CIS) (5 pieces of A4 sized CIS) Light source LED (R/G/B) Setting of original Face up Starting point of scan Center Scan width Max: 914.4mm / 36” Min : 210mm Scan length Max:...
Page 18: Special Documents
1. 3 Specifications for Originals 1. 3. 1 Original Standards (1) The width of original must range from 8.5” to 36” (210mm to 914.4mm). (2) The length of original must range 8.5” (210mm) to 25,000mm (3) The thickness of original must range from 0.05mm to 0.65mm. (4) The shape of original must be square, and it must be standard sized.
Page 19 1. 4. 1 Front Name Function Main Switch You can turn on/off the TASKalfa 2420w. Original Guides Feed the original under the Scanner Unit along the Original Guides. User Interface This is a Touch Screen, and many kinds of user operation are available.
Page 20 Open here to access toner supply system. Original Guide These trays catch the original ejected from the Scanner Unit. LAN Port Connect the LAN Cable to connect the TASKalfa 2420w to the network. (Do not connect a telephone line) USB Port Service Use, 5VDC max. Breaker It is possible to shut off supplying the AC power.
Page 21: Specifications For Scan Original
1. 5 Specifications for Scan Original A scan original must satisfy the following specifications. Thickness 0.05mm to 0.6mm Width 210mm to 914.4mm Length 210mm to 6,000mm (If an original is thicker than 0.6mm, its image quality is not guaranteed even it is transported.) Do not scan the following kinds of original, because you may damage the original or scanner itself! Sticked with paste Paste...
Page 22 Not square Wet image Made of metal or fabric Metal Fabric Patched Clipped or stapled Clipped Stapled WWW.SERVICE-MANUAL.NET 1-11...
Page 23 The following kinds of originals can be read with using a carrier sheet. Image quality or the reliability of paper feeding for them is not guaranteed. Rough surface Rough surface (Carbon paper for example) Punched WWW.SERVICE-MANUAL.NET 1-12...
Page 24: Papers Not Available To Use
1. 6 Specifications for Printing Media 1. 6. 1 Papers not available to use Do not use the following kinds of printing paper because you may damage the print engine! Excessively curled (a diameter of 50 mm or less) Folded Creased Torn Punched...
Page 25: Keeping The Paper In The Custody
Paper that has already been used for printing Extremely sticky Extremely thin and soft Extremely slippery OHP Film CAUTION Do not use the paper with staple, or do not use such conductive paper as aluminium foil and carbon paper. Such paper may become cause for the fire. NOTE (1) Print image may become light if printed on a paper of rough surface.
Page 26: Treatment Against Environmental Condition
1. 6. 3 Treatment against environmental condition Humidity(%) Possible problem Necessary treatment “Void of image”, “crease of paper” and 1. Install an humidifier in the room, and other problems occurs when you print humidify the room air. with plain paper and tracing paper. 2.
Page 27 Chapter 2 Installation The machine had passed our strict inspection after careful adjustment in the factory, and then it was packaged and shipped. Installation is an important work to make the machine work at customer’s site as same as it has passed our strict inspection before shipment. A service engineer has to understand machine’s function very well.
Page 28 2. 1 Unpack The next page shows the unpacking procedure. This is printed on the outside of the product carton. WWW.SERVICE-MANUAL.NET...
Page 29 NOTE NOTE / (1) When this printer is installed in winter, if a printer that has been kept in (2) Handle with great care when you unpack or install NEVER use a forklift to unload a cold warehouse is moved to a warm room and is unpacked, it may the printer because its net weight is about 180Kg.
Page 30: Installation Requirements
2. 2 Installation Requirements The following conditions are required for the installation of the equipment. 1. Power source should be rated as: U.S.A: 120V +/-10%, 50/60Hz, 15A or higher Europe: 220-240V +6% or -10%, 50/60Hz, 10A or higher 2. The equipment must be on a dedicated circuit. 3.
Page 31: Accessory List
Shaft Rear Stay Swing Arm Assy Sheet Assy Thumb Screw Wrench User’s Manuals Hardware Setup DVD ROM Procedure Product Library (This leaflet) NOTE The Wrench is designed for only installing / uninstalling the TASKalfa 2420w. Use only for intended WWW.SERVICE-MANUAL.NET...
Page 32: Stand Setup
2. 4 Stand Setup 1. Pass Rear Stay (1) through the loop at the 2. Fix Swing Arm Assy (3) to the bottom plate of Stand with end of the cloth of Sheet Assy (2). Thumb Screw (4). 3. Put the end of Rear Stay (1) on the Bracket (5). Make sure to face the holes on the L-shape toward the floor.
Page 33 2. 5 Scanner Part 1. Press the levers (1) up to open the Scanner Unit. 2. Remove the protection mat (2) and the Protection Sheet (3). 3. Gently press both sides of the Scanner Unit down to firmly close it. 2.
Page 34 2. 7 Inner Feeder Unit Setup 1. Press down the blue levers (1) on both sides to unlock and open the Upper Unit. 2. Remove the shock absorber (2), (3) on both sides. 3. Remove the tape (4) to release the drive belt (5). 4.
Page 35 5. Open the Guide Plate (8), and remove the shock absorbers (9) and tags (10) on both sides. 6. Close the Guide Plate (8). Return the Transfer / Separation Corona (7) in position. 2. 8 LED Head Assy Setup 1. Remove 2 tapes. (1) 2.
Page 36 NEVER 3. Pinch and hold the dotted area in the picture. touch the LED Array (3) and the LED Head Bracket (4). Slightly lift up the LED Head Assy to remove Fixing Plate (5). The pictures on this step show the right side. Please do the same way for the left side too. Do not touch 4.
Page 37 2. 9 Developer Unit Setup 1. Remove 2 thumb screws (1) to remove the red brackets (2) on each side. The brackets (2) are no longer required. 2. Remove the stickers (3) on the “flap areas” on the top of the black sheet (4).
Page 38 2. 10 Process Unit Setup NOTE Direct this face up. 1. Please handle the Process Unit with great care as it is equipped with the Drum. Rough handling may damage the Drum. 2. Please confirm the table is flat when you put the Process Unit on it.
Page 39 4. With fitting the square holes (5) to the pins (6), install the Process Unit to the Upper Unit of printer. Process Unit 5. Secure the Process Unit by tightening 4 thumb screws (7). 7. Finish the setup of Process Unit by closing the 6.
Page 40 2. 11 Installing Accessory Remove 2 tapes (1). Fit 2 Guides (2) into the slots on the rear cover of printer. 2. 12 Supplying Initial Toner 1. Open the Toner Hatch (1) on the rear cover of the printer. (Not necessary to remove the Guide) from right 2.
Page 41 3. Put the dent area (3) under the holder (4) to firmly seat the bottom plate of the Toner Bottle to the toner supply position. from front from front from right 4. With pressing down the Toner Bottle, slide from right the green lever (5) to the arrow direction until it stops.
Page 42 6. Connect the Power Cable and turn on the printer. For power source requirements, see page 1. The UI screen shows “Setup Wizard”. It will prompt you to enter several settings. Follow the wizard for the rest of the setup. 2.
Page 43 3. Service Configuration screen will appear. Press the arrow keys to move to page 5/7. On 5/7 page, press [Launch]. Use the arrow keys to open [5/7 IPS Setup]. 4. A confirmation dialog appears. Press [Yes]. Press [Login] to log in Service Mode. 5.
Page 44 6. Entry Serial Number screen will appear. Input the serial number and press [Enter]. 7. Install a USB storage device to the printer. Locate “Removable Disk” and press [Save]. The current setting parameters are saved as *.RAM and *.txt in a folder (automatically created) at this time. If you do not have one, please locate a folder in the HDD of the controller.
Page 45 9. When RAM file is created in a USB storage, follow the instruction in another dialog. Press [Yes] and [OK] before you remove it. 10. Press [Back], [Logout] then [Close] to cancel Service Mode. 11. UI screen will display Home screen in a short time. WWW.SERVICE-MANUAL.NET 2-18...
Page 46 Chapter 3 Print / Scan Process Page 3. 1 Print Process 3- 2 3. 1. 1 Characteristic of toner 3- 2 3. 1. 2 Each step of the print process 3- 3 3. 1. 2. 1 Erasing (Removal of negative electric charges) 3- 5 3.
Page 47: Print Process
3. 1. 1 Characteristic of toner The toner used for TASKalfa 2420w has a characteristic to be charged “negative”, which tends to be attracted to a more “positive” object. Suppose that there are objects A and B, and the situation is as follows.
Page 48 3. 1. 2 Each step of print process One cycle of print consists of the following 8 processes. 1. Erasing (Removal of negative electric charges) 2. Charge of Drum 3. Exposure 4. Development 5. Transfer 6. Separation 7. Drum Cleaning (Removal of remained toner) 8.
Page 49 When the printer is going to stop after printing, or when the used Roll Deck is changed with other one, the TASKalfa 2420w will take the “Toner Collection Process” to remove the remained toner and place back into the Developer Unit.
Page 50 3. 1. 2. 1 Erasing (Removal of negative electric charges) As the first step of print cycle, it is necessary to remove the negative electric charges from the Drum, which have remained there after the former print cycle. The Drum has a characteristic to lose the negative electric charges if it is exposed to the light. So the Drum is rotated and evenly exposed to the light from the Eraser Lamp.
Page 51 3. 1. 2 .2 Charge of Drum The Image Corona discharges negative electric charges which are given to the Drum. The surface of Drum becomes about -630V evenly as a result, which corresponds to the white area of the printed image pattern. The Grid Plate is also connected to the High Voltage Power Supply individually.
Page 52 3. 1. 2. 3 Exposure According to the printed image pattern, the LED Head throws the light (740nm) onto some part of Drum which corresponds to the black area of printed image pattern. As the Drum has a characteristic to lose the negative electric charges if it is exposed to the light, this part of Drum surface loses the charges and its potential becomes about -20V.
Page 53 (9 micrometers) is much smaller than that (42 micrometers) of 1 pixel of LED. The electric charges on the Drum are removed as needed. (2) The TASKalfa 2420w’s LED Head Unit consists of 3 blocks. Block A / C...
Page 54 3. 1. 2. 4 Development The Developer Roller, which is evenly covered with the toner, is contacted to the Drum because the Developer Unit is pressed to the Drum. (The width of contact point is about 5mm.) The Developer Roller is supplied with -230V during the print cycle. And both -630V area and -20V area exist on the Drum because the Electrostatic Latent Image has been formed in the former Exposure process.
Page 55 Even if some toner has not been removed by the Cleaning Roller but remained on the -630V area of Drum (It corresponds to the white area of the print) in the later [3.1.2.7 Drum Cleaning], this toner is removed at the time of Development because it moves to the Developer Roller of which potential (-230V) is higher than that of Drum (-630V).
Page 56 3. 1. 2. 5 Transfer The printing paper is charged positively as the Transfer Corona discharges positive electric charges from under the paper. The toner existing on the -20V area on the Drum will move to the printing paper because the potential of the paper comes to be higher than the Drum by the Transfer Process.
Page 57 3. 1. 2. 6 Separation The printing paper is attracted to the Drum after the Transfer because the potential of paper is positive and that of Drum is negative. It is necessary for avoiding the jam to separate the paper from the Drum by removing the static force between them.
Page 58 3. 1. 2. 7 Drum Cleaning (Removal of remained toner) Some amount of toner that has not been transferred onto the printing paper is remaining on the Drum. This remained toner will be removed by the Cleaning Roller. The Cleaning Roller is supplied with +450V (+/-5V), and there are some negative electric charges on the Drum at this time.
Page 59 3. 1. 2. 8 Fusing After Transfer / Separation Processes, the printing paper is transported to the Fuser Unit. The Fuser Unit mainly consists of the Fuser Roller and the Pressure Roller. The Fuser Roller is very hot, and the Pressure Roller is strongly pressed to the Fuser Roller by the spring.
Page 60 3. 1. 3 Controlling the movement of toner in the Developer Unit There are 3 kinds of rollers called “Developer Roller”, “Regulation Roller” and “Toner Supply Roller” in the Developer Unit. Each roller is supplied with its own voltage. In the following list, the voltage of the Developer Roller (-230V) is measured against the ground. The other voltages mean the difference against the voltage of Developer Roller Bias.
Page 61 Taking advantage of the difference of potentials among these rollers, the movement of toner is controlled in the Developer Unit as follows. 1. The Toner Supply Roller carries the toner toward the Developer Roller. 2. When the toner reaches the contact point of these rollers, therefore, it moves onto the Developer Roller.
Page 62 5. The voltage of both sides of Regulation Roller is 0V as these parts are connected to the ground. It is higher than that of Developer Roller (-230V). When the toner reaches the contact point of these rollers, therefore, it moves onto the Regulation Roller.
Page 63 3. 1. 4 Toner Collection Process As explained in [3.1.2.7 Drum Cleaning], the Cleaning Roller is supplied with +450V to remove the remained toner from the Drum during the print cycle. This toner gathered by the Cleaning Roller is returned to the Developer Unit in the following 3 cases.
Page 64 3. The voltage supplied to the Developer Roller is also changed to +350V (+/-5V) in the Toner Collection Process. As the potential of Developer Roller becomes higher than that of Drum, toner on the Drum moves onto the Developer Roller. Then the toner is carried into the Developer Unit by both the Developer Roller and the Toner Supply Roller.
Page 65 Reference Voltages supplied to Regulation Roller and Toner Supply Roller are changed also as follows. Name of roller Supplied voltage Developer Roller +350V +/-5V against the ground Regulation Roller -80V +/-5V against the Developer Roller Bias (Center) Regulation Roller 0V (Ground) (Both sides) Toner Supply Roller Same voltage with the Developer Roller Bias...
Page 66 3. 1. 5 Density Compensation Process On rare occasion, loss of image density may occur under a special usage. TASKalfa 2420w has the ability to reduce such loss of image density and this enables to maintain a satisfactory image quality regardless of the machine usage.
Page 67: Scan Process
Then it outputs the image data to the IPS through the USB 2.0. 4. The IPS output the image data to the printer part of TASKalfa 2420w through the Interface 8 in case of “copy”, or it outputs to the Network PC through the LAN cable in case of “scan to file”.
Page 68 3. 2. 2 Positioning process of Image Block The scanner part of TASKalfa 2420w reads the image of original with 5 - CIS (Contact Image Sensor). As these CIS are arranged in 2 rows, there occurs a vertical gap of image among the image blocks.
Page 69 The Main Board removes the vertical gap among the Image Block according to the positioning setting (Y offset) specified through Scanner Utility. The image data before the positioning process The image data after the positioning process (Y offset) WWW.SERVICE-MANUAL.NET 3-24...
Page 70 Also the Main Board removes the duplication of image pixels among the Image Blocks according to the positioning setting (X overlap) specified through Scanner Utility. The image data after the positioning process (Y offset) The image data after the positioning process (X overlap) WWW.SERVICE-MANUAL.NET 3-25...
Page 71 Chapter 4 Electrical page 4. 1 General information 4- 1 4. 2 Electrical Component Location 4- 2 4. 2. 1 Right 4- 2 4. 2. 2 Left 4- 3 4. 2. 3 Rear 4- 4 4. 2. 4 Front 4- 5 4.
Page 72: General Information
4. 1 General Information This machine is mainly controlled by a microcomputer, which is located on DC Controller. This microcomputer reads input signals from sensors, and outputs the operation signals to motors, SSRs, solenoid, clutches and blowers on programmed timing. Sensor Micro Computer Driver...
Page 73: Electrical Component Location
4. 2 Electrical Component Location 4. 2. 1 Right Item Symbol Signal name Name Type Function Switch AJ8R2004BBCF Switches ON/OFF the machine (Power Switch) Switch FA1L-CA22 Shuts off the AC power to the (Upper Unit Switch) DCP1 when the Upper Unit is open Noise Filter Removes the noise from the AC line...
Page 74 4. 2. 2 Left Item Symbol Signal name Name Type Function FEED_BL ASFN60372 Assists to transport media (EXT_FAN) (Feed Blower) HV_IM HV Power Supply EUK1MGA60HA Outputs the high voltage to each of HV_TR the following components. HV_AC HVP4 (1) Image Corona (HV1) (2) Transfer Corona (HV2) OUTPUT2 BIAS_TRG...
Page 75 4. 2. 3 Rear Item Symbol Signal name Name Type Function Line Filter RG-208F2 Removes the noise from the AC line 230V model only MAIN_TRG DC Motor DRG-6236-226 Drives the Drum, Developer Unit, (Main Motor) Fuser Unit and media feeding section ASFN90372 Cools the IPS and other...
Page 76 4. 2. 4 Front Item Symbol Signal name Name Type Function Touch Touch Panel LCD Unit SLP0832-ETT- Touch Screen User Interface Screen (UI) DOOR_OPN Switch (Roll Deck AM51612C53 Detects Roll Deck Cover open Cover open) HAND_DOOR Switch (Manual Feed CS1A-B2CA Detects Manual Feeder Table Table open) open...
Page 77 4. 2. 5 Process Frame / LED Head Item Symbol Signal name Name Type Function LED HEAD LED HEAD UNIT 53TRC Creates latent Images on Drum PW6693 HV-ZD Assy PW6693 - Keeps the Grid Voltage constant - Controls the surface potential of Drum PW11755 PW11755 Assy...
Page 78: Main Frame
4. 2. 6 Main Frame Item Symbol Signal name Name Type Function DENS_S Sensor GP2Y40010K0 Detects the toner density on the (Toner Density Sensor) drum surface Outputs analog voltage to PW11720 Item Symbol Signal name Name Type Function BL1 / BL2 HEAT_BL Blower D12F-24BL 05...
Page 79 4. 2. 7 Sensor on Media Path Item Symbol Signal name Name Type Function R1_SET_S Sensor PS119ED1 Detects whether the leading (Roll Set Sensor) edge is at set position RENC_S Sensor LG248NL1 Detects the distance of the roll (Feed Encoder) media feeding R_EDGE Sensor...
Page 80: Cutter Unit
4. 2. 8 Cutter Unit Item Symbol Signal name Name Type Function MCUTL Motor Slides the cutter blade MCUTR (Cutter Motor) MSCUTL Switch (Cutter Home Detects whether the cutter blade MSCUTR Position Sensor) exists at the home position WWW.SERVICE-MANUAL.NET...
Page 81: Developer Unit
4. 2. 9 Developer Unit Item Symbol Signal name Name Type Function TLS1 TONER_S Sensor TSP15DA10C- Detects whether the toner exists (Toner Sensor) in the Developer Unit TONER_M DC Motor DMA-3150A Drives the Toner Hopper to (Toner Supply Motor) supply the toner to the Developer Unit WWW.SERVICE-MANUAL.NET 4-10...
Page 82: Fuser Unit
4. 2. 10 Fuser Unit Item Symbol Signal name Name Type Function Thermostat CH-152-35- Prevents over-heat Thermistor 1 FS-K0120 Detects the temperature on the central area of Fuser Roller Thermistor 2 FS-K0121 Detects the temperature on the Fuser Roller on the left HEAT_EXIT Sensor LG248NL1...
Page 83: Scanner Unit
4. 2. 11 Scanner Unit Item Symbol Signal name Name Type Function Main Board (117) Makes image processes to the (data controller) digital data sent from SVC CIS BD And then it sends the processed image data to the controller CIS Board (117) Converts the analog data read by (CIS controller)
Page 84 Item Symbol Signal name Name Type Function Sensor PS117ED1 - Detects the insertion of original (Original Set Sensor) - Detects original widths A4 (Size Sensor A4) (Portrait), 8.5”, 9” Sensor PS117ED1 Detects original widths A4 (Size Sensor A3) (Landscape), A3, 11”, 12” Sensor PS117ED1 Detects original widths A2, 17”, 18”...
Page 85 4. 3 Check & Adjustment of Analog Output from HV Power Supply 4. 3. 1 Situations necessary to check the analog output It is necessary to check the analog output from High Voltage Power Supply after replacing the following parts. PW11720 PCB (DC Controller) HV Power Supply PCB (EUK1MGA60HA) Please check the analog output for each of the following part, and please adjust if it is out of the...
Page 86 4. 3. 2 Analog Voltage to Image Corona The standard value of the voltage outputted from the HV Power Supply PCB to the Image Corona 1.30 +/-0.05V. Check and adjust the output current in the following way. 1. Connect the “+” cable of the multi-meter to the “CP11” pin on the HV Power Supply PCB (EUK1MGA60HA).
Page 87 3. Adjust the output voltage if it does not satisfy 1.30 +/-0.05V. To adjust it, rotate the VR101 with a screwdriver. VR101 multimeter (DC) WWW.SERVICE-MANUAL.NET 4-16...
Page 88 4. 3. 3 Analog Voltage to Transfer Corona The standard value of the voltage outputted from the HV Power Supply PCB to the Transfer Corona is specified as follows. Plain paper 1.00 +/-0.05V Tracing paper 1.00 +/-0.05V Film 1.00 +/-0.05V Check and adjust the output current in the following way.
Page 89 2. Select the Test Print Mode, and make a test print using each type of paper (plain paper, tracing paper & Film) making reference to [8. 9 Test Print Mode]. As the high voltage is supplied to the Transfer Corona during the Test Print, check the voltage with the multi-meter.
Page 90 4. 3. 4 AC Component to Separation Corona The standard value of the AC Component outputted from the HV Power Supply PCB to the Separation Corona is 5.00 +/-0.05V. Check and adjust the AC Component in the following way. 1. Connect the “+” cable of the multi-meter to the “CP31” pin on the HV Power Supply PCB (EUK1MGA60HA).
Page 91 3. Adjust the AC Component if it does not satisfy 5.00 +/-0.05V. To adjust it, rotate the VR302 with a screwdriver. VR302 multimeter (DC) WWW.SERVICE-MANUAL.NET 4-20...
Page 92 4. 3. 5 DC Component to Separation Corona The standard value of the DC Component outputted from the HV Power Supply PCB to the Separation Corona is -250 +/-5V. Check and adjust the DC Component in the following way. 1. Connect the “+” cable of the multi-meter to the “CP33” pin on the HV Power Supply PCB (EUK1MGA60HA).
Page 93 3. Adjust the DC Component if it does not satisfy -250 +/-5V. To adjust it, rotate the VR303 with a screwdriver. VR303 ground multimeter (DC) WWW.SERVICE-MANUAL.NET 4-22...
Page 94 4. 3. 6 Negative Developer Bias to Developer Roller The Negative Developer Bias means the voltage supplied to the Developer Roller during the Print Cycle. The standard value of the Negative Developer Bias is as follows for each type of paper. Plain paper -230 +/-5V against the ground Tracing paper...
Page 95 2. Make a Test Print making reference to [8. 9 Test Print Mode]. As the Negative Developer Bias is supplied to the Developer Roller during the Test Print, check the voltage with the multi-meter. The standard value of the Negative Developer Bias for each type of media is: Plain paper -230 +/-5V against the ground Tracing paper...
Page 96 4. 3. 7 Positive Developer Bias to Developer Roller The Positive Developer Bias means the voltage supplied to the Developer Roller during the Cleaning Cycle. The standard value of the Positive Developer Bias is 0.350 +/-0.005V against the CP42. Check and adjust the Negative Developer Bias in the following way. 1.
Page 97 2. Make a Test Print making reference to [8. 9 Test Print Mode]. The Positive Developer Bias is supplied to the Developer Roller for some seconds after the printed paper has been ejected. Check the voltage with the multi-meter during that period. The standard value of the Positive Developer Bias is 0.350 +/-0.005V against the CP42.
Page 98 4. 3. 8 Bias gap between Developer Roller and Regulation Roller The standard value of the Bias gap between Developer Roller and Regulation Roller is +/-5V. Check and adjust it in the following way. 1. Connect the “+” cable of the multi-meter to the “OUTPUT3” pin on the HV Power Supply PCB (EUK1MGA60HA).
Page 99 3. If the value (voltage) is “120 +/-5V” or “160 +/- 5V”, Regulation Bias may be automatically adjusted by Density Compensation Process. “0006 Dev. Clear” Enter Special Operation Mode and then “ 2” 000000 The voltage “120V +/- 5V” is correct when the above 7-digit value shows “...
Page 100 4. 3. 9 Positive Cleaning Roller Bias (Print Cycle) The Positive Cleaning Roller Bias means the voltage supplied to the Cleaning Roller during the Print Process. The standard value of the Positive Cleaning Roller Bias is +450 +/-5V. Check and adjust it in the following way. 1.
Page 101 3. Adjust the Positive Cleaning Roller Bias if it does not satisfy +450 +/-5V. To adjust it, rotate the VR001 with a screwdriver. VR001 ground multimeter (DC) WWW.SERVICE-MANUAL.NET 4-30...
Page 102 4. 3.10 Negative Cleaning Roller Bias (Toner Collection Process) The Negative Cleaning Roller Bias means the voltage supplied to the Cleaning Roller during the Toner Collection Process, which is done after the completion of Print Process. The standard value of the Negative Cleaning Roller Bias is -550 +/-5V.
Page 103 3. Adjust the Negative Cleaning Roller Bias if it does not satisfy -550 +/-5V. To adjust it, rotate the VR002 with a screwdriver. VR002 ground multimeter (DC) WWW.SERVICE-MANUAL.NET 4-32...
Page 104 Chapter 5 Mechanical page 5. 1 Periodic Replacement 5- 1 5. 1. 1 Image Corona Unit 5- 1 5. 1. 2 Transfer / Separation Corona Unit 5- 6 5. 1. 3 Filters 5- 8 1476 5. 1. 4 Developer Unit 5-12 3424 5.
Page 105 5. 1 Recommended Periodic Replacement This section describes the procedure of replacing some units that are recommended replacement for preventive maintenance. There are “light blue” stickers that show the “access point” for Periodic Replacement. For detailed information of the Service Kit contents, see Chapter 6. 5.
Page 106 3. Loosen 4 thumb screws (4) to release the Process Unit (5). 4. Hold the handgrip (6) on both sides. Pull the Process Unit (5) to the arrow direction to remove it from the machine. NOTE THIS SIDE UP (1) Gently place the Process Unit (5) on a flat surface in the correct direction.
Page 107 5. Pick the plastic area (8) on both sides. Release the pins (10) from the hook. Pull and remove the Image Corona Unit (9) from the Process Unit. 6. Install both the pins (10) to the hooks to seat the new Image Corona Unit in position.
Page 108 7. Hold the handgrip (6) on both sides. Slightly tilt the Process Unit downward. Put the square holes (11) onto the tapered edges of the positioning pins (12). Before inserting completely, pivot the unit upward to face each other. Finally push the unit into the machine 8.
Page 109 9. Return the belt (2) to the pulley (3). 10. Put your hands on the rear rim of the scanner unit just as you hold the Upper Unit. Push the entire unit down to the arrow direction. Hold here Hold here WWW.SERVICE-MANUAL.NET...
Page 110: Transfer / Separation Corona Unit
5. 1. 2 Transfer / Separation Corona Unit 1. Press the blue lever (1) on both sides to open the Upper Unit. 2. Pick the plastic area (2) on both sides. Pull and remove the Transfer / Separation Corona Unit (3) from the machine. 3.
Page 111 4. Put your hands on the rear rim of the scanner unit just as you hold the Upper Unit. Push the entire unit down to the arrow direction. Hold here Hold here WWW.SERVICE-MANUAL.NET...
Page 112 5. 1. 3 Filters 1. Remove 3 Bind Head Screws (M4x6) (1) on each side. 2. Press the blue lever (2) on both sides to open the Upper Unit. 3. Slightly lift Side Cover R (3) / Side Cover L (4) up to the arrow direction to remove then from the machine.
Page 113 4. Replace Filter A (5) in Side Cover L (4) with a new one. 5. Replace Filter B (6) in the duct of the machine with a new one. 6. Replace Filter C (7) in the duct of the machine with a new one. WWW.SERVICE-MANUAL.NET...
Page 114 7. Make sure that the Upper Unit is open. Return Side Cover R (3) and Side Cover L (4) to the machine. Note that the hook part (8) should be seated in the square hole (9) of the machine. 8. Reinstall 4 of 6 screws (1) to loosely fix Side Cover R (3) and Side Cover L (4). NOTE Do not tighten the 4 screws (1) completely at this time.
Page 115 9. Put your hands on the rear rim of the scanner unit just as you hold the Upper Unit. Push the entire unit down to the arrow direction. Hold here Hold here NOTE The small top tab parts (10) should fit inside of Side Cover R (3) and Side Cover L (4). 10.
Page 116: Replacement Procedure
5. 1. 4 Developer Unit Reference You can check what to do in step by step with using “Developer Replacement Wizard” on the touch screen. For better understanding, first please read [5.1.4.1 Replacement Procedure] before running the wizard. Example of use of the wizard is shown on [5.1.4.2 Using Wizard]. 5.
Page 117 2. Remove 6 Bind Head Screws (M4x6) (3) to remove Cover 32 (4). WWW.SERVICE-MANUAL.NET 5-13...
Page 118 3. Disconnect 1 connector (5). 4. Remove 1 Bind Head Screw (6) on each side to remove the rail blocker R (7) / L (8). 5. Press the blue lever (9) on both sides to open the Upper Unit. NOTE Be sure to open the Upper Unit.
Page 119 6. Hold the handgrip (10) on both sides. Pull the Developer Unit (11) to the arrow direction to remove it from the machine. 7. Disconnect the ground wire (12) and 1 connector (13). WWW.SERVICE-MANUAL.NET 5-15...
Page 120 8. Release 3 tabs (14) on the front. Turn the Hopper Unit (15) to the arrow direction to remove it from the DEVELOPER ASSY (11). Cover the toner supply hole (16) on the Hopper Unit with a plastic bag (17) at this time to avoid scattering toner. Replace the with a new one.
Page 121 9. Remove the sticker (19) and the protection sheet (20) from the new Developer Unit. Pinch tab area Pinch tab area Never pull here 10. Return the Hopper Unit (15). Again, cover he toner supply hole (16) on the Hopper Unit with a plastic bag (17) to avoid scattering toner.
Page 122 NOTE Be sure to confirm the followings after reinstalling the Hopper Unit to the Developer Unit. - The hook parts (21: 2pcs) fit in the square holes (22). - The tab parts (14: 3pcs) catch the frame’s rim. (Press the entire Hopper Unit) 11.
Page 123 12. The Upper Unit should be open. Hold the handgrip on both sides. Place the wheel (23) on the rail of the drive side (left hand). Push the Developer Unit in the machine until it stops. rail rail 13. Slide the Developer Unit to the arrow direction (to your right hand). WWW.SERVICE-MANUAL.NET 5-19...
Page 124 14. Secure the rail blocker R (7) to the rail opening with the screw (6). NOTE Fully insert the rail blocker R (7). If it does not go into the opening completely, please follow the instruction(s) below to seat the Developer Unit in position.
Page 125 15. Secure the rail blocker L (8) to the rail opening with the screw (6). 16. Reconnect the connector (5). 17. Put your hands on the rear rim of the scanner unit just as you hold the Upper Unit. Push the entire unit down to the arrow direction. Hold here Hold here WWW.SERVICE-MANUAL.NET...
Page 126 18. Return Cover 32 (4) and Cover 31 (2). NOTE After replacing Developer Unit, you must set bias adjustment by Density Compensation Process to “1”. Otherwise a darker image appears because the adjusted values are too high voltage for the refreshed Developer Unit.
Page 127 21. Put the dent area (26) under the holder (27) to firmly seat the bottom plate of the Toner Bottle (2) to the toner supply position. from front from right from front WWW.SERVICE-MANUAL.NET 5-23...
Page 128 22. With pressing down the Toner Bottle (25), slide the green lever (28) to the arrow direction until it stops. When it stops, wait 10 seconds as it is. Gently tap the top of the Toner Bottle several times. from right NOTE Gently press down the Toner Bottle.
Page 129 24. Add toner with the other spare Toner Bottle. from right 25. Close the Toner Hatch (1). 26. Press “? - Help” on Home screen. WWW.SERVICE-MANUAL.NET 5-25...
Page 130 27. Press [Service]. 28. On-screen Keypad appears. Input “8495107” and press [Enter]. 29. Service Configuration screen will appear. WWW.SERVICE-MANUAL.NET 5-26...
Page 131 30. Use the arrow keys to open [5/7 IPS Setup]. Press [Launch] in “IPS Service Software”. 31. Press [Yes]. 32. Press [Login] to log in Service Mode. WWW.SERVICE-MANUAL.NET 5-27...
Page 132 33. Press [Special Operation] in Service Mode Home. Operation Target screen appears. 34. Select [0006 Dev. Clear] from Name of mode menu. Press [Enter]. 0006 Dev. Clear Initializes Developer / Regulation Bias adjusted with Density Compensation Process WWW.SERVICE-MANUAL.NET 5-28...
Page 133 35. Confirmation screen appears. Press [EDIT] to enter the input screen. 36. Input screen appears. “1” Input with On-screen Keypad. WWW.SERVICE-MANUAL.NET 5-29...
Page 134 37. The value is displayed in “Count” area. [Rewrite] will be activated. Press [Rewrite] to apply the new value to the printer. The value in “Reading” area will be changed to the new value. 38. Press [RETURN] to go back to Operation Target screen. Select [0007 Toner Supply1] and press [Enter].
Page 135 39. Confirmation screen appears. Press [Agree]. Toner supply / agitation starts. This will take 10 minutes to complete. 40. Once you press [Agree], it will turn deactivated. Press [Return]. WWW.SERVICE-MANUAL.NET 5-31...
Page 136 41. The screen goes back to Operation Target Screen. The status window shows “warm up” during toner supply / agitation. After the completion, it changes to “standby”. 42. Do the same way on step 38 to 41. (twice in a row for 2 Toner Bottles) WWW.SERVICE-MANUAL.NET 5-32...
Page 137: Using Wizard
5. 1. 4. 2 Using Wizard This subsection describes only the summary of replacing procedure of Developer Unit. For further details, see [5.1.4.1 Replacement Procedure]. 1. Press “? - Help” on Home screen. 2. Press [Service]. 3. On-screen Keypad appears. Input “8495107”...
Page 138 4. Service Configuration screen will appear. 5. Use the arrow keys to open [5/7 IPS Setup]. Press [Launch] in “IPS Service Software”. 6. Press [Yes]. WWW.SERVICE-MANUAL.NET 5-34...
Page 139 7. Press [Login] to log in Service Mode. 8. Press [Wizard]. 9. Press [Developer Replacement Procedure]. WWW.SERVICE-MANUAL.NET 5-35...
Page 140 10. Press [Login Hold]. 11. The screen shows the procedure step by step. Press [] button to turn the pages. Press [►] to start the slide show style. Follow the instructions and replace Developer Unit. 12. Page 23/23 is the end of the procedure. Press [Login Hold]. 13.
Page 141 14. Supply toner in 2 Toner Bottle in the kit. from right 15. Press [Back], [Back] 16. Enter Special Operation Mode. 17. Select “Toner Supply1”. Run “Toner Supply1” twice in a row. WWW.SERVICE-MANUAL.NET 5-37...
Page 142: Process Unit
5. 1. 5 Process Unit 1. Press the blue lever (1) on both sides to open the Upper Unit. 2. Release the belt (2) from the pulley (3). 3. Loosen 4 thumb screws (4) to release the Process Unit (5). WWW.SERVICE-MANUAL.NET 5-38...
Page 143 4. Hold the handgrip (6) on both sides. Pull the Process Unit (5) to the arrow direction to remove it from the machine. NOTE THIS SIDE UP (1) Gently place the Process Unit (5) on a flat surface in the correct direction. Not doing so may damage the Photoconductive Drum (7) (shiny green cylinder).
Page 144 5. Hold the handgrip (6) on both sides to take out the new from the container. Process Unit 6. Put the Process Unit on a flat surface. Remove the desiccant (7) and the tapes (8). 7. Remove the black shading paper (9). WWW.SERVICE-MANUAL.NET 5-40...
Page 145 7. Hold the handgrip (6) on both sides. Slightly tilt the Process Unit downward. Put the square holes (10) onto the tapered edges of the positioning pins (11). Before inserting completely, pivot the unit upward to face each other. Finally push the unit into the machine 9.
Page 146 10. Return the belt (2) to the pulley (3). 11. Put your hands on the rear rim of the scanner unit just as you hold the Upper Unit. Push the entire unit down to the arrow direction. Hold here Hold here WWW.SERVICE-MANUAL.NET 5-42...
Page 147: Removing Fuser Unit
5. 2 Fuser Unit 5. 2. 1 Removing Fuser Unit 1. Remove 3 Bind Head Screws (M4x6) (1) on each side. 2. Press the blue lever (2) on both sides to open the Upper Unit. WWW.SERVICE-MANUAL.NET 5-43...
Page 148 3. Slightly lift Side Cover L / R (3) up to the arrow direction to remove then from the machine. 4. Close the Upper Unit. WWW.SERVICE-MANUAL.NET 5-44...
Page 149 5. Open the Exit Cover (4). 6. Remove 2 screws (5) on each side to remove the face plate R / L (6). WWW.SERVICE-MANUAL.NET 5-45...
Page 150 7. Remove 5 connectors (7) on the right side. 8. Remove 4 screws (8) on each side to remove the Fuser Bracket L / R (9). Front Left Front Right Left Side Right Side WWW.SERVICE-MANUAL.NET 5-46...
Page 151 9. Close the Exit Cover (4). 10. Put your hands under the bottom of the Fuser Unit. Pull and remove the Fuser Unit (10) from the machine. NOTE When you remount the Fuser Unit, fully push it in the machine. Check for this by the position of the side pin (11) of the Fuser Unit.
Page 152 10. Remove 1 screw (12) on each side to remove the hinge plate L / R (13). 11. Remove the Exit Cover (4) from the Fuser Unit. (Continued on the next page) WWW.SERVICE-MANUAL.NET 5-48...
Page 153 NOTE There is a metal collar (14) on each hinge pin of the Exit Cover. This works as a bearing. hinge pin WWW.SERVICE-MANUAL.NET 5-49...
Page 154 5. 3 Scanner Unit This section describes the procedure of replacing the individual components of the Scanner Unit. 5. 3. 1 Scan Glass Assy 1. On both sides, pull the levers (1) to unlock the Scanner Unit. Open the Scanner Unit. 2.
Page 155 5. 3. 2 NOTE A CIS is divided into several classes according to wavelength variations of their LED. All the 5 pieces of CIS on a certain Scanner Unit should be in the same class to assure even image quality (brightness, color quality and etc) among image blocks. Be sure to check which CIS class is used to the scanner before replacing to avoid class mixing.
Page 156 NOTE (cont.) 3. Loosen 1 screw (3) and remove 1 screw (4) to remove the plastic cover (5). 1. On both sides, pull the levers (1) to unlock the Scanner Unit. Open the Scanner Unit. 2. On a CIS to be replaced, remove 2 small screws (2) with a sharp screwdriver. WWW.SERVICE-MANUAL.NET 5-52...
Page 157 3. Remove 4 screws (3) on the front. 4. Close the Scanner Unit. Loosen 4 screws (4) to release Scanner Top Cover (5). 5. Remove Scanner Top Cover (5) from the Scanner Unit. WWW.SERVICE-MANUAL.NET 5-53...
Page 158 6. Remove 2 screws (6) to remove USB Cable Bracket (7). 7. Disconnect 3 cables (8) from the touchscreen connector. 8. Open 3 wire saddles (9) to release all the cables (8) . WWW.SERVICE-MANUAL.NET 5-54...
Page 159 9. Remove 3 screws (10: M3x6). 10. Remove Scanner Inner Plate (11). 11. Remove all the connectors (12) from Main Board (13). WWW.SERVICE-MANUAL.NET 5-55...
Page 160 12. Remove 6 screws (14) to remove Main Board (13). 13. On all CIS Boards (15), remove 2 harnesses (16) WWW.SERVICE-MANUAL.NET 5-56...
Page 161 14. Open the Scanner Unit. On both sides, remove the tapes (17) to release the white / brown harness. 15. Remove 4 screws (18) and the harness to remove Switch Bracket R / L (19). WWW.SERVICE-MANUAL.NET 5-57...
Page 162 16. Close the Scanner Unit. Open 3 wire saddles (20) to release the harnesses. 17. Open 5 wire saddles (21) to release USB Cable (22). WWW.SERVICE-MANUAL.NET 5-58...
Page 163 18. Remove 9 screws (23, M3x6) and 2 screws (24, M4x6). WWW.SERVICE-MANUAL.NET 5-59...
Page 164 19. Remove the Base Plate (25). 20. Remove 4 screws (26, M3x4 w/ TW) to remove the concerning CIS Bracket (27). front front NOTE Place CIS Bracket on a soft cloth or anything to avoid damage on the Scan Glass Assy (28). If you remove the Scan Glass Assy just in case, still you should prepare such to avoid damage on the sensor array of the CIS (29).
Page 165 21. Remove 2 screws (30) to release CIS Board (31). Carefully remove the flat cable (32) from CIS. front front NOTE When reassembling, gently insert Flat Cable (32) all the way in the terminal on the CIS. Inserting incorrectly would lead abnormal scan image. FRAGILE.
Page 166 22. Remove 6 screws (33: M3x4 w/ SW) and 2 screws (34: M3x4) disassemble the CIS Unit. - upper bracket (35) - small spacer (36) - CIS (29) - lower bracket with Scan Glass Assy (28) front front 23. Replace CIS with a new one. 24.
Page 167 5. 4 LED Head Unit 5. 4. 1 Replacing LED Head Unit Reference To obtain enough clearance to remove / install the LED Head Unit, it is recommended to remove the Developer Unit. 1. Press the blue lever (1) on both sides to open the Upper Unit. 2.
Page 168 3. Loosen 4 thumb screws (4) to release the Process Unit (5). 4. Hold the handgrip (6) on both sides. Pull the Process Unit (5) to the arrow direction to remove it from the machine. NOTE THIS SIDE UP (1) Gently place the Process Unit (5) on a flat surface in the correct direction.
Page 169 5. Open 5 wire clamps (8) to release the harnesses (9). Disconnect 2 connectors (10). 6. On the right side, remove 1 screw (11) to release the bias terminal for Image Corona (12). WWW.SERVICE-MANUAL.NET 5-65...
Page 170 7. On the both sides, remove 1 screw each (13) to remove Spring Plates (14). NOTE There may be Spacer(s) under Sprint Plate (14). This is for tolerance of Upper Unit. Be sure to remain / reinstall Spacer(s) to the original position.
Page 171 8. On both sides, remove the front Thumb Screws (15). Be careful that the spring on the screws does not drop in the machine. 9. On both sides, remove the rear screws (16). Again be careful that the spring on the screws does not drop in the machine. WWW.SERVICE-MANUAL.NET 5-67...
Page 172 10. Pinch and hold the shaded area in the picture on both sides. NEVER touch the LED Array (17) and the LED Head Bracket (18). Slightly lift up the entire LED Head Unit (19). Pull the right side to outside first (A), and next move the LED Head Unit to the arrow direction (B).
Page 173 11. In the Upper Unit, there is the “hex. head pin” (20) on the rest (steel) of the LED Head Unit. Check that the “marked face” comes to front. If not, turn the pin (20). marked face 12. Take away the new LED Head Unit (21) from its container. Again NEVER touch the LED Array (17) and the LED Head Bracket (18).
Page 174 Again NEVER touch the LED Array and the LED Head Bracket. Put the left side of the LED Head Unit (21) in the Upper Unit first (B), and then the right side (A). Seat the unit so that the hex. head pin (20) goes into the square hole (22) on the LED Head Unit.
Page 175 14. On both sides, reinstall the rear screws (16: w/ spring). 15. On both sides, reinstall the front Thumb Screws (15: w/ spring). WWW.SERVICE-MANUAL.NET 5-71...
Page 176 16. On both sides, reinstall the Spring Plates (14) with the screws (13). If there is Spacer(s), fix them together. 17. On the right side, reinstall the terminal plate (12) with the screw (11). The tab parts should fit in the notch on the frame. 18.
Page 177 19. Hold the handgrip (6) on both sides. Slightly tilt the Process Unit downward. Put the square holes (23) onto the tapered edges of the positioning pins (24). Before inserting completely, pivot the unit upward to face each other. Finally push the unit into the machine 20.
Page 178 21. Return the belt (2) to the pulley (3). 22. Put your hands on the rear rim of the scanner unit just as you hold the Upper Unit. Push the entire unit down to the arrow direction. Hold here Hold here 23.
Page 179: Focus Adjustment
5. 4. 2 Focus Adjustment Reference After replacing the LED Head Unit according to [5.4.1 Replacing LED Head Unit], an uneven halftone bands may appear on the test print sheet. Test Pattern #9 Size Code 3 darker areas in the middle darker area at the center This requires a special adjustment to obtain a proper distance between the LED Head Unit and the Photoconductive Drum (focus).
Page 180 NOTE A thin black or white line may appear on the test print sheet. This is not by the focus (hardware) but the stitch adjustment (software). white line at LED Block border black line at LED Block border O: Block A (left block) should move right to touch with Block B (center, reference block). P: Block C (right block) should move right to keep apart from Block B.
Page 181 1. Remove the Process Unit (1). For the detailed procedure, see [5.1.5 Process Unit]. NOTE THIS SIDE UP (1) Gently place the Process Unit (1) on a flat surface in the correct direction. Not doing so may damage the Photoconductive Drum (2) (shiny green cylinder).
Page 182 3. On the both sides, remove 1 screw each (5) to remove Spring Plates (6). 4. On both sides, remove the front Thumb Screws (7). Be careful that the spring on the screws does not drop in the machine. WWW.SERVICE-MANUAL.NET 5-77...
Page 183 5. On both sides, remove the rear screws (8). Again be careful that the spring on the screws does not drop in the machine. 6. Pinch and hold the shaded area in the picture on both sides. NEVER touch the LED Array (9) and the LED Head Bracket (10). Slightly lift up the entire LED Head Unit.
Page 184 7. You can see the head of the “hex. head pin” (11) on both sides. Specify which face comes to front. Read the column below about the pin’s head. Reference The pin’s head is a type of hexagon head. One of the six faces has a groove. This face is called “marked face”.
Page 185 NOTE To turn the pin (11), follow the instruction below. 1. Lift up the LED Head Unit. Keep lifting it up. Again NEVER touch the LED Array (9) and the LED Head Bracket (10). 2. Push and turn the pin (11). Keep lifting up Push and turn (example) right side pin...
Page 186 8. Which side pin / which face to be used may depend on how uneven the gray bands show. Read the column below. Reference Depending on which face comes to front, the LED Head Unit is seated slightly frontward / backward.
Page 187 9. If the gray bands get darker on one area in the middle (not the exact center), that is because the LED Head Unit is seated skew. In this case, first, remove the skew. Find a face of the pin (11) on the darker side only so that unevenness of the gray bands could disappear or change as follows.
Page 188 10. (A) The gray bands get darker on 2 areas in the middle (not the exact center), (B) The gray bands get darker on 1 area at the center, in these cases, find a face of the pin (11) on both sides in the same turn(s) so that unevenness of the gray bands could disappear.
Page 189: Maintenance
Chapter 6 Maintenance page 6. 1 Recommended Periodic Replacement Parts 6- 2 6. 2 Cleaning 6- 4 6. 2. 1 Cleaning Nail Stripping 6- 6 6. 3 Service Tool List 6- 8 WWW.SERVICE-MANUAL.NET...
Page 190 Nail Cleaning Tool, Toner Bottle (2 bottles) 3571 The TASKalfa 2420w incorporates a Service Part Replacement Notification system. This can be disabled in the “Service” settings on the touch screen (under “?”) if the notification is not desired. Notification on the UI screen is to occur at the designated intervals.
Page 191 2. Press the button appeared besides the concerning Service Kit to be applied. 3. Input a “reset password” and press [Enter]. WWW.SERVICE-MANUAL.NET...
Page 192 6. 2 Cleaning Please make the following maintenances to keep the machine in a good condition and to get a superior image. Unit / Area Maintenance part Way of cleaning Main Frame Machine inside Clean the machine inside with a dry cloth. Upper Unit LED Head (Selfoc Lens) Gently wipe it with a soft dry cloth.
Page 193 Photoconductive Drum: See [5.1.1 Image Corona Unit] to remove Image Corona Unit. Gently wipe the surface (green area). Image Corona Unit drive gear Rotate the drive gear (on the right hand Photoconductive Drum grip side of Process Unit) to turn (cylinder with green surface) Photoconductive Drum.
Page 194 6. 2. 1 Cleaning Nail Stripping 1. Open the Exit Cover (1). 2. Press down the beam (2) on the Fuser Door, and put the Pads in the gap on both sides. Reference Putting the Pads raises the Nail Stripping to rise. This allows easier works in the later step. WWW.SERVICE-MANUAL.NET...
Page 195 3. Pinch the Nail Cleaning Tool as shown in the following pictures. (Read the column below to clean the Nail Stripping.) NOTE (1) There are extremely hot parts inside the Fuser Door. Never touch any hot parts to avoid burning yourself. (2) Move the Nail Cleaning Tool to the arrow direction only.
Page 196 6. 3 Service Tool List Here is the table to list special tools for field service. It is recommended to check them through in Parts Manual and Publication Bulletin for the latest information. Part Name Appearance / Usage Requirement Related Section (Part Number) SHADING SHEET 8.13.4.1 Shading (Calibration)
Page 197: Troubleshooting
Chapter 7 Troubleshooting Page 7. 1 Troubleshooting - Printer Errors 7- 3 7. 1. 1 Countermeasures - Call Operator Errors 7- 3 7. 1. 1. 1 J-0103 / 0203 Roll Deck Feeder Jam 7- 3 7. 1. 1. 2 J-0104 / 0204 / 1004 Registration Jam 7- 4 7.
Page 198 7. 2. 2.19 Double image 7-30 7. 2. 2.20 Dirt on the print (Offset) 7-31 7. 2. 2.21 Crease on Long Print (and image void at a time) 7-31 7. 3 Troubleshooting - Scanner Defects 7-32 7. 3. 1 Countermeasures - scanner operation 7-32 7.
Page 199 7. 1 Troubleshooting - Printer Errors 7. 1. 1 Countermeasures - Call Operator Errors 7. 1. 1. 1 J-0103 / 0203 Roll Deck Feeder Jam Reference Delay : Paper arrives the sensor much later than required timing. Stay : Paper exists on the sensor for longer time than required. Remained : Paper has already existed on the sensor when turning on the machine.
Page 200 7. 1. 1. 2 J-0104 / 0204 / 1004 Registration Jam Cause Checking Checking Result Treatment order Media mis-feed Does the paper mis-fed occur around the Remove the mis-fed paper. Registration Roller? Registration Check the status of Registration Sensor 1. Check if there is any Sensor (PH1) in the Signal Status Mode of the Service problem with the wire...
Page 201 7. 1. 1. 4 J-0106 / 0206 / 1006 Fuser Jam Cause Checking Checking Result Treatment order Mis-feed of paper Does the paper mis-fed occur around the Remove the mis-fed paper. fuser area? Flap Guide Plate Is Flap Guide Plate (just before Fuser Open it, clear its range of Unit) close properly? motion.
Page 202: Manual Set Ng
7. 1. 1. 7 Manual Set NG Cause Checking Checking Result Treatment order Mis-feed Have you already set the cut sheet paper Remove the paper. to the Bypass Feeder before you turned on the machine? Manual Set Sensor Check the status of Manual Feed Sensor 1.
Page 203: Toner Empty
7. 1. 1. 8 Toner Empty Cause Checking Checking Result Treatment order Toner Hopper Is there enough toner in the Toner Add toner to Toner Hopper. Hopper? Toner Supply Turn on the machine and check the 1. Check if there is any Motor (M3) action of Toner Supply Motor at that time.
Page 204 7. 1. 2 Countermeasures - Call Service Errors The followings are the names of Service Call Errors and the conditions that those errors occur. Error Code Error Indication Conditions E-0000 Fuser Temperature Rising Error Fuser Temperature does not reach 50 within 120 seconds after turning on.
Page 205 Error Code Error Indication Conditions E-0034 Bias Output Error Bias Output Detection Signal (BIAS_LD) continues to be “L” for 1 second or longer when a specified bias is supplied to the corresponding Developer Unit components. E-0040 Cutter Error 1. The Cutter Home Sensor Signal (MSCUT_L or MSCUT_R) does not change to “H”...
Page 206 7. 1. 2. 1 E-0000 / 0002 / 0004 Fuser Error E-0000: Fuser Temperature Rising Error E-0002: Fuser Low Temperature Error E-0004: Fuser Temperature Abnormal Fall Error Cause Checking Checking Result Treatment order Error clearance Have you cleared the fuser error in the Wait until the Fuser Unit is Special Operation Mode? enough cooled down.
Page 207 Cause Checking Checking Result Treatment order Solid State Relay Select the Operation Check Mode, and Replace the Solid State (SSR1) then change the signal of the following Relay signals to “H”. Replace the PW11720 PCB. Device Code : 22 (Fuser Relay) 21 (Fuser Lamp 1) Then check the voltage between J600 and J601.
Page 208 7. 1. 2. 3 E-0003 Fuser Error E-0003: Fuser Temperature Abnormal Fall Error Cause Checking Checking Result Treatment order Error clearance Have you cleared the fuser error in the Wait until the Fuser Unit is Special Operation Mode? enough cooled down. Then select the Special Operation Mode and clear the concerning error.
Page 209 7. 1. 2. 5 E-0010 Main Motor Error Cause Checking Checking Result Treatment order Wires Is the wire between Main Motor and Connect it properly. PW11720 PCB connected properly? DC Power Supply Confirm that the machine is turned on, Replace the DC Power (DCP1) and then check the voltage of the orange Supply if there is no problem...
Page 210 7. 1. 2. 7 E-0020 Counter Error (E-020) Cause Checking Checking Treatment order Service Mode Has the setting of Adjustment Mode Item Set it to “0”. No.753 set to “1” ? 7. 1. 2. 8 E-0031 / 0032 / 0033 High Voltage Output Error E-0031: Image Corona Output Error E-0032: Separation Corona Output Error E-0033: Transfer Corona Output Error...
Page 211 7. 1. 2. 9 E-0034 Bias Output Error Cause Checking Checking Treatment order Wires Are wires among Developer Unit, HV Connect them properly. Power Supply PCB and PW11720 PCB connected properly? Developer Unit Is the toner spill out from the Developer Clean each Corona Wire, Unit? Grid Plate and housing.
Page 212 7. 1. 2. 11 E-0050 FPGA Error Cause Checking Checking Result Treatment order PW11720 PCB Can you fix the problem if you replace the PW11720 PCB? 7. 1. 2. 12 E-0070 Developer Error Cause Checking Checking Result Treatment order Wires Is the wire between Developer Unit and Connect it properly.
Page 213: Troubleshooting - Image Quality
7. 2 Troubleshooting - Image Quality 7. 2. 1 Basic Image Adjustment The followings are the settings specified to the image creation components. When a defective image is printed out, please check whether or not these settings are satisfied for the beginning.
Page 214 7. 2. 2 Countermeasures - Image Quality 7. 2. 2. 1 Halftone is too light Check the following matters with the Test Pattern No.1 S(0) and No.3 S(0). If necessary use other Test Patterns. Cause Checking Checking Result Treatment order Try to readjust each image creation component according to [7.2.1 Basic Image Adjustment].
Page 215 7. 2. 2. 2 Halftone and solid black are too light Check the following matters with the Test Pattern No.1 S(0) and No.3 S(0). If necessary use other Test Patterns. Cause Checking Checking Result Treatment order Try to readjust each image creation component according to [7.2.1 Basic Image Adjustment].
Page 216 7. 2. 2. 3 The whole image is extremely light Check the following matters with the Test Pattern No.1 S(0) and No.3 S(0). If necessary use other Test Patterns. Cause Checking Checking Result Treatment order Try to readjust each image creation component according to [7.2.1 Basic Image Adjustment].
Page 217 7. 2. 2. 4 Density is uneven Check the following matters with the Test Pattern No.1 S(0) and No.3 S(0). If necessary use other Test Patterns. Cause Checking Checking Result Treatment order Process Unit Is the Process Unit seated by the 4 Reseat the Process Unit and thumb screws properly? fix it with the thumb screws...
Page 218 7. 2. 2. 6 Foggy image or blurred black wide line (vertical) Check the following matters with the Test Pattern No.1 S(0) and No.4 S(0). If necessary use other Test Patterns. Cause Checking Checking Result Treatment order Light from the Is any light from the outside thrown onto Install the outer cover outside...
Page 219 7. 2. 2. 8 White line (Vertical) Check the following matters with the Test Pattern No.1 S(0) and No.7 S(0). If necessary use other Test Patterns. Cause Checking Checking Result Treatment order Image Corona Is there something like filament on the Remove it.
Page 220 7. 2. 2. 9 Void of image Check the following matters with the Test Pattern No.1 S(0) and No.7 S(0). If necessary use other Test Patterns. Cause Checking Checking Result Treatment order Print out the Test Patter No.7 (halftone). Go to the step 2. Can you find void of image on the print? Paper Can you fix the problem if you use a...
Page 221 7. 2. 2.10 Dirt on the back of the print Check the following matters with the Test Pattern No.1 S(0) and No.4 S(0). If necessary use other Test Patterns. Cause Checking Checking Result Treatment order Try to readjust each image creation component according to [7.2.1 Basic Image Adjustment].
Page 222 7. 2. 2.12 Defective image placement, No Leading Edge Correct leading margin is 5mm (+/-2mm). Check the following matters with the Test Pattern No.1 S(0) and No.7 S(0). If necessary use other Test Patterns. Cause Checking Checking Result Treatment order Setting of Leading Is the Leading Registration or Leading Adjust it properly.
Page 223 7. 2. 2.14 Image looks not sharp Check the following matters with the Test Pattern No.1 S(0). If necessary use other Test Patterns. Cause Checking Checking Result Treatment order Dirt of the LED Is the LED Head dirty? Clean it. Head Installation of LED Remove the LED Head, and then re-...
Page 224 7. 2. 2.16 Completely white (No image) Check the following matters with the Test Pattern No.1 S(0). If necessary use other Test Patterns. Cause Checking Checking Result Treatment order Developer Unit Is the Developer Unit correctly pressed Reseat the Developer Unit in to the Drum? position.
Page 225 7. 2. 2.18 Crease of paper Check the following matters with the Test Pattern No.1 S(0). If necessary use other Test Patterns. Cause Checking Checking Result Treatment order Paper Is the type of paper selected on the UI Select the correct paper type same with that of actually installed on the UI.
Page 226 7. 2. 2.19 Double Image Check the following matters with the Test Pattern No.1 S(0). If necessary use other Test Patterns. Cause Checking Checking Result Treatment order Paper Is the type of paper selected on the UI Select the correct paper type same with that of actually installed on the UI.
Page 227 7. 2. 2.20 Dirt on the print (Offset) Check the following matters with the Test Pattern No.2 S(0). If necessary use other Test Patterns. Cause Checking Checking Result Treatment order Paper Is the type of paper selected on the UI Select the correct paper type same with that of actually installed on the UI.
Page 228 7. 3 Troubleshooting - Scanner Defects 7. 3. 1 Countermeasures - Scanner operation 7. 3. 1. 1 Original can not be set (Scanner does not transport) Cause Checking Checking Result Treatment order Sensor Is the original detected? 1. Tap the UI screen to (Is it shown on the UI?) cancel the sleep mode.
Page 229 7. 3. 1. 4 Original is mis-fed Cause Checking Checking Result Treatment order Foreign substance Is there any foreign substance under Remove it. the Upper Unit? 7. 3. 1. 5 Motor rotates endlessly at the time of turning on Cause Checking Checking Result...
Page 230: Vertical Black Lines
7. 3. 2 Countermeasures – Scan Image Quality 7. 3. 2. 1 Completely black Cause Checking Checking Result Treatment order Calibration Can you fix the problem if you make Shading (Calibration)? (Refer to [8.13.4.1 Shading].) Cable of CIS Is the cable of each CIS connected Connect it properly, or properly? replace the cable if it is...
Page 231 7. 3. 2. 4 Some image is lost at the boundary of Image Blocks Cause Checking Checking Result Treatment order Calibration Can you fix the problem if you make Position? (Refer to [8.13.4.3 Position].) 7. 3. 2. 5 Vertical image gap between Image Blocks Cause Checking Checking...
Page 232: Touch Screen Calibration
7. 4 Touch Screen Calibration If the cursor position in the screen does not correctly match the tapped position on the panel, the touch screen should be calibrated so that the cursor is located directly underneath your finger or a stylus.
Page 233 3. On-screen Keypad appears. Input “8495107” and press [Enter]. 4. Service Configuration screen is displayed. Press [OK]. 5. Make sure that a wrench symbol is indicated at the upper right of the screen. Press [Reset] to close UI operation window. WWW.SERVICE-MANUAL.NET 7-37...
Page 234 6. Tap Diagnostics folder twice as a double-click. Run the shortcut “TouchScreen Configure Utility” for touch screen calibration. WWW.SERVICE-MANUAL.NET 7-38...
Page 235 7. Select [Tools] tab. 8. Press [Draw Test] to check that the touch screen correctly detects a tapped position. NOTE Using a stylus is recommended for easy and accurate touch screen calibration. Do not use any sharp instrument. 9. Test screen will appear. WWW.SERVICE-MANUAL.NET 7-39...
Page 236 10. Tap a certain point and check the cursor appears directly underneath a stylus. For example, suppose you tap the point shown the next figure. Tap this cross The cursor will appear just underneath the tapped point in a correct condition (calibration is not necessary).
Page 237 11. Tap [Quit] to close Test screen. 12. Press [4 Points Calibration]. 13. On Calibration screen, a blinking X symbol on the bottom left can be seen. Press the X until it stops blinking with a beep. NOTE Press the X symbol for several seconds before the progress bar at the bottom reaches the end.
Page 238 14. The X disappears and the next one will come in the following order: bottom right, top right, top left. Perform the same way for the other 3 points. 15. When all the 4 points are pressed successfully, Calibration screen disappears and the following dialog appears.
Page 239 17. Run the shortcut “Restart GUI” for GUI operation. WWW.SERVICE-MANUAL.NET 7-43...
Page 240 The counter values are stored on PW11720 PCB Assy and the HDD of IPS at the same time. The TASKalfa 2420w has a backup system for the counter values. If one of them gets lost, the UI asks “which counter value has been lost, PW11720 or HDD?”...
Page 241 Chapter 8 Service Mode / Utility Page 8. 1 General Information of Service Mode 8- 1 8. 2 IPS Service Software Overview 8- 2 8. 2. 1 Launching IPS Service Software 8- 4 8. 2. 2 Closing IPS Service Software 8- 7 8.
Page 242 Dot Enhancement Level (Dither) 8-60 Metric or Inch 8-60 Language 8-61 Counter Unit 8-61 Maximum Length 8-61 063, 064 Cut Length 5 & 6 (Compensation for Tracing Paper / Film) 8-62 Drum Reverse Rotation Period 8-63 310 to 315 Main Motor Speed 8-64 322 to 327 Separation Corona OFF Timing...
Page 243 8. 8 Jam/Error Mask Mode 8-93 8. 8. 1 Mask List 8-96 8. 8. 2 Masking Jam 8-97 8. 8. 3 Masking Error 8-100 8. 9 Test Print Mode 8-103 8. 9. 1 Making Test Print 8-105 8. 9. 2 Built-in Test Pattern 8-107 8.
Page 244 8. 1 General Information of Service Mode The system is equipped with advanced functions for field service to easily achieve its best performance. Service Mode contains the following categories. - Signal Status Mode - Information Mode - Operation Check Mode - Adjustment Mode - Running Mode - Jam/Error Mask Mode...
Page 245 8. 2 IPS Service Software Overview IPS Service Software is an integrated utility application that provides intuitive operability by using Touch Screen. IPS Service Software is included in the controller and operates as an interface for monitoring, checking and setting configuration for field service. Canceling the UI program (controlling user operation such as Copy screen) allows Touch Screen to be free to use Desktop on the controller’s operating system.
Page 246 IPS Service Software Tree Diagram of screen menu hierarchy Login screen Service Mode Home (Signal Status Mode) Signal Status Monitor screen (Information Mode) Information List screen Data Monitor Jam History Error History (Operation Check Mode) Operation Check screen (Adjustment Mode) Adjustment Menu screen Setting Configuration Setting Backup/Restore View Table...
Page 247 8. 2. 1 Launching IPS Service Software 1. Press “? - Help” on Home screen. 2. Press [Service]. WWW.SERVICE-MANUAL.NET...
Page 248 3. On-screen Keypad appears. Input “8495107” and press [Enter]. 4. Service Configuration screen will appear. 5. Use the arrow keys to open [5/7 IPS Setup]. Press [Launch] in “IPS Service Software”. WWW.SERVICE-MANUAL.NET...
Page 249 6. Press [Yes]. 7. Press [Login] to log in Service Mode. WWW.SERVICE-MANUAL.NET...
Page 250 8. 2. 2 Closing IPS Service Software 1. Return to Service Mode Home. Press [Logout]. 2. In Login screen, press [Close]. Reference Closing “IPS Service Software” automatically invoke UI Home screen to be ready for user operation. WWW.SERVICE-MANUAL.NET...
Page 251: Login Screen
8. 2. 3 Log In screen Name Function Login Log in Service Mode Serial Port Configures Communication Port Settings between the controller Setting and PW11720 PCB It is not necessary to use this button in normal condition. Close Press here to close IPS Service Software. WWW.SERVICE-MANUAL.NET...
Page 252 8. 2. 4 Service Mode Home Name Function Mode Select Press one of Mode Category buttons that you want to enter. Signal Status Input / Output signal monitor Information Analog data status monitor Operation Check Electric device check Adjustment Printer settings Running not available Jam/Error Mask...
Page 253: Serial Port Setting
8. 2. 5 Serial Port Setting Name Function Port Number Shows the currently selected serial port Auto Detection Detects a serial port number to be used for communication between PW11720 to IPS Port Setting Correct ant settings if not set so in the above image. Applies serial port configuration to the selected port Back Press here to log out Service Mode.
Page 254 8. 3 Signal Status Mode It is possible to monitor the status of any device signal input to / output from PW11720 PCB with making prints. For information about Signal Codes, Signal Names and their contents, see [8.3.2 Input / Output Signal List].
Page 255 8. 3. 1 Monitoring Signal Status 1. Press [Signal Status] in Service Mode Home. Signal Code Group screen appears. WWW.SERVICE-MANUAL.NET 8-12...
Page 256 2. Press one Code Group button that contains the signal code that you want to monitor. Signal Status Monitor screen appears. WWW.SERVICE-MANUAL.NET 8-13...
Page 257 3. Specify one signal item that you want to monitor from Signal Code/Name menu. 4. The current status of the device you have chosen is displayed in Status Monitor. WWW.SERVICE-MANUAL.NET 8-14...
Page 258 8. 3. 2 Input / Output Signal List Signal Symbol IC Port Connector Signal Name Input / Status Code Output IC3-P20 J205-11 Input Switch 1 Input L : ON IC3-P21 J205-12 Input Switch 2 Input L : ON IC3-P22 J205-13 Input Switch 3 Input L : ON...
Page 259 Signal Symbol IC Port Connector Signal Name Input / Status Code Output IC3-P66 IC3-P67 IC3-P70 IC3-P71 IC3-P72 IC3-P73 IC3-P74 J207-3 IC3-P75 J207-4 IC3-P76 J208-22 Eraser Lamp Output H : Eraser Lamp lights TONER_M IC3-P77 J208-23 Toner Supply Motor Output H : Rotate IC3-P90 J207-5 IC3-P91...
Page 260: Information Mode
8. 4 Information Mode It is possible to monitor the analog voltage input sent by devices (such as Thermistor) to DC Controller PCB. It is also possible to monitor the current Fuser temperature which is calculated from the input voltage. Information Mode includes the list of the latest 100 jam / service call error records.
Page 261 Monitor screen Name Function Contents Explains the contents of the listed items Current Displays the current Analog Voltage and its calculated value for Information the items to be monitored Home Returns to Information Home screen For information about items to be monitored, see [8.4.2 List of Analog Data Monitor]. WWW.SERVICE-MANUAL.NET 8-18...
Page 262 Jam History screen Name Function Jam Information Displays the latest 100 jam records Code Displays Jam Code “J-****” Counter Value Displays the counter value that the concerning jam occurred Export Saves the records as a file Home Returns to Information Home screen WWW.SERVICE-MANUAL.NET 8-19...
Page 263 Error History screen Name Function Error Information Displays the latest 100 service call error records Code Displays Jam Code “E-****” Counter Value Displays the counter value that the concerning error occurred Export Saves the records as a file Home Returns to Information Home screen WWW.SERVICE-MANUAL.NET 8-20...
Page 264 8. 4. 1 Monitoring Analog Data 1. Press [Information] in Service Mode Home. Information Home screen appears. WWW.SERVICE-MANUAL.NET 8-21...
Page 265 2. To monitor any available Analog Data value, open [No.00 - 32] tab to display Monitor screen. WWW.SERVICE-MANUAL.NET 8-22...
Page 266 8. 4. 2 List of Analog Data Monitor All items grayed are not generally for field technician use Data Item Unit Remarks Contents Code Fuser Temp 1 Centigrade Calculated temperature detected by the thermistor on the Value center of the Fuser Unit Fuser Temp 2 Centigrade Calculated...
Page 267 8. 4. 3 Browsing Jam History To browse the machine’s jam history, open [No.33] tab to display Jam History screen. [Export] creates “jaminfo.dat” that contains the currently recorded Jam History. Reference To clear the entire jam history record, see [8.11.1 Clearing Fuser Error, Jam/Error History]. WWW.SERVICE-MANUAL.NET 8-24...
Page 268 8. 4. 4 Browsing Error History To browse the machine’s service call error history, open [No.34] tab to display Error History screen. [Export] creates “errinfo.dat” that contains the currently recorded Error History. Reference To clear the entire service call error history record, see [8.11.1 Clearing Fuser Error, Jam/Error History].
Page 269 8. 5 Operation Check Mode It is possible to operate several electrical components independently, such as motor, clutch, and fans. Operation Check screen Name Function Signal Code / Displays Signal Code/Name in drop-down menu Name Specify one item that you want to check. Signal Status Displays the current status of the selected signal On / Off...
Page 270 8. 5. 1 Checking Device Operation 1. Press [Operation Check] in Service Mode Home. Operation Check screen appears. WWW.SERVICE-MANUAL.NET 8-27...
Page 271 2. Specify one signal item that you want to monitor from Signal Code/Name menu. 3. The current status of the device you have chosen is displayed in Signal Status field. Press [Start] to operate the device alone. WWW.SERVICE-MANUAL.NET 8-28...
Page 272: Device List
8. 5. 2 Device List All items grayed are not generally for field technician use Signal Signal Name Target item Code MAIN-TRG Main Motor Reserved Reserved Reserved TONER-M Toner Supply Motor Reserved R1FD-CL Roll 1 Feed Clutch Reserved Reserved Reserved FEED-CL Feed Clutch REG.-CL...
Page 273: Adjustment Mode
8. 6 Adjustment Mode It is possible to configure fundamental settings on the printer. Every setting item has the corresponding Sub Mode Number. Adjustment Menu screen Name Function Press one Code Group button that contains the signal code Sub Mode Number Group Button you want to configure.
Page 274 Setting Configuration screen Name Function Item Code / Displays Item Code/Name in drop-down menu Name Specify one item that you want to configure. Current Value Displays the current value of the selected item New Value Displays an input value by using On-screen Keypad Setting Range An input value must be set within this range.
Page 275 8. 6. 1 Changing Setting Value 1. Press [Adjustment] in Service Mode Home. Adjustment Menu screen appears. WWW.SERVICE-MANUAL.NET 8-32...
Page 276 2. Press one Code Group button that contains the signal code that you want to configure. Setting Configuration screen appears. WWW.SERVICE-MANUAL.NET 8-33...
Page 277 3. Specify one signal item that you want to configure from Item Code/Name menu. 4. The current value and available setting range of the item you have chosen are displayed. WWW.SERVICE-MANUAL.NET 8-34...
Page 278 5. To change a setting value, input a desired value with On-screen Keypad. The value will be displayed in “New Value” field. The setting item you have chosen is in hexadecimal, press [Fn] to input alphabetic characters A to F. WWW.SERVICE-MANUAL.NET 8-35...
Page 279 6. Press [Apply] to apply the new value to the printer. The value in “Current Value” field will be changed to the new value. WWW.SERVICE-MANUAL.NET 8-36...
Page 280: Setting Item List
8. 6. 2 Setting Item List Default Values may differ by individual machine. See the service sheet attached inside the machine. All items grayed are not generally for field technician use Item Setting Item Unit setting range Default (sample) EU/Asia Leading Registration (Roll paper) Leading Registration (Cut sheet paper) Trailing Margin (Roll paper)
Page 281 Item Setting Item Unit setting range Default (sample) EU/Asia Main Motor Speed (Tracing paper) 0.02mm/s Main Motor Speed (Film) 0.02mm/s Main Motor Speed (Special plain paper) 0.02mm/s Main Motor Speed (Special Tracing Paper) 0.02mm/s Main Motor Speed (Special Film) 0.02mm/s Reserved Transfer Voltage applied at 100mm from trailing edge (Hex.)
Page 282 Item Setting Item Unit setting range Default (sample145) EU/Asia Print - Fuser Temperature (Plain) (36” / 34” / 30” / A0 / B1) Print - Fuser Temperature (Tracing) (36” / 34” / 30” / A0 / B1) Print - Fuser Temperature (Film) (36”...
Page 283 Transfer Corona OFF Timing (Plain) (12” / 11” / A3) Item Setting Item Unit setting range Default (sample) EU/Asia Transfer Corona OFF Timing (Tracing) (12” / 11” / A3) Transfer Corona OFF Timing (Film) (12” / 11” / A3) Transfer Corona OFF Timing (Plain) (18” / 17” / 15” / A2) Transfer Corona OFF Timing (Tracing) (18”...
Page 284 8. 6. 3 Setting Item Explanation NOTE Default Values may differ by individual machine. See the service sheet attached inside the machine. All items grayed are not generally for field technician use 000, 001 Leading Registration It is possible to specify where to start printing the image at the leading edge of the media. If you increase the setting value by “+1 “, the head of image is shifted 1mm downward toward the trailing edge As a result the leading margin becomes larger.
Page 285 Side Margin (Left & Right) It is possible to adjust the amount of side margin. (Both left and right) Each side margin becomes 1mm wider if you increase the setting value. (As a result the width of print image becomes 2mm narrower.) Setting Range Step of increment 0 to 20...
Page 286 005, 006 Side Registration It is possible to specify where to start printing the image at the side edge of the media. If you increase the setting value by “+1 “, image is shifted 0.1mm to the right. Item No. Setting Item Setting Step of...
Page 287 008 to 010 LED Strobe Time for Main Pixel It is possible to make the whole image of each Image Block (A, B and C) darker or lighter independently by changing the LED Strobe Time for the Main Pixels. As a result an even image density can be accomplished among 3 Image Blocks. The whole image of the concerning Image Block becomes darker if you increase the setting value.
Page 288 NOTE (1) The LED Strobe Times specified in these 008, 009 and 010 are directly applied to the Test Print. If the setting values are 7 (for 008), 8 (for 009) and 9 (for 010), for example, the actual LED Strobe Times are also 7 (for block A), 8 (for block B) and 9 (for block C). In case of Test Print 008: 7 microseconds 009: 8 microseconds...
Page 289 011 to 013 LED Strobe Time for IST (Supplemental Pixel) If such image as a diagonal line looks too weak, you can make it clearer by changing the LED Strobe Time for the Supplemental Pixels. The adjustment is available for each Image Block independently. A diagonal line comes to look clearer if you increase the setting value, as the LED Strobe Time for the Supplemental Pixels becomes longer.
Page 290 Reference Normally the TASKalfa 2420w takes 600 times of image exposure per inch for the vertical direction as its resolution is 600DPI. Pixels created by this normal timing are called [Main Pixel]. When a specific image pattern (like a diagonal line) is printed, however, the TASKalfa 2420w will make additional image exposure between vertically neighboring 2 Main Pixels.
Page 291 014, 015 Vertical Alignment of LED Block It is possible to align the pixels between Image Blocks if there is a gap of pixels. The Image Block B is the standard, and both the Image Blocks A and C can be shifted vertically. If you increase the setting value by “+1”, the whole pixels of the concerning Image Block is shifted “0.5 pixel”...
Page 292 Check the following part of the test pattern No.9 S(3) for how many pixels Block A or Block C are shifting against Block B. ex) Block A/B Block A Block B Correct: The long center line on Block A touches the reference line on Block B. The gauges on Block B line up in 0.5 pixel interval.
Page 293 Cut Length 1 (length information provided) It is possible to make the print length longer or shorter. This setting is applied when the print command (plot & copy) is provided with the length information. (this is command used on all standard pages printed from the IPS) If you increase the setting value by “+1”, the print length becomes 1mm longer.
Page 294 Cut Length 3 (Compensation of the length of a long print) When you make a long print, the actual print length may become shorter than expected because the paper is likely to shrink. It is possible in this mode to compensate the print length manually. The length of long print is not compensated directly, but it is indirectly compensated by correcting the length of A1 print.
Page 295 2. Make an A1 (841mm long) or 34” long print. Measure the actual length of this A1 or 34” print to know how long millimeter it is shorter than expected. (Example: Print out is 838mm, so it is 3mm shorter than expected.) Expected length Actual length A1 or 34”...
Page 296: Leading Margin
Leading Margin It is possible to adjust the length of the leading margin. An image portion that corresponds to the given length of the leading margin is not printed. The length of the leading margin becomes 0.1mm longer if you Increase the setting value by “+1 “. Changing the value to “0”...
Page 297 022 to 027 Developer Bias It is possible to make the print density darker or lighter by adjusting the Developer Bias (Negative Developer Roller Bias). The print density becomes lighter if you increase the setting value. Item No. Setting Item Setting range Developer Bias (Plain paper)
Page 298 029 to 034 Transfer Voltage It is possible to adjust the analog voltage outputted to the Transfer Corona during the print cycle. Item No. Setting Item Setting range Transfer Corona Analog Voltage (Plain paper) 0 to 4FF Transfer Corona Analog Voltage (Tracing paper) 0 to 4FF Transfer Corona Analog Voltage (Film) 0 to 4FF...
Page 299 Transfer Corona ON Timing It is possible to adjust the timing that the Transfer Corona starts discharging during the print cycle. If you increase the setting value by “+1”, the timing to start discharging is 1mm delayed. Setting Range Step of increment 0 to 100 NOTE You may lose some leading image as the following example if you increase the setting value...
Page 300 045 Fuser Temperature to start idling It is possible to decide the temperature to start idling. When the Fuser Temperature reaches the value specified in this No.045 during the warming up, the Fuser Motor starts rotating to drive the Fuser Roller (idling). Setting Range Step of increment 100 to 140...
Page 301 048, 049 Fuser Temperature Control Range It is possible to specify the control range of temperature of Fuser Roller. If you specify some setting value “X” on these No.048 and 049, for example, you can decide the highest limit and the lowest one of the control range of temperature. The highest limit is “Fuser Temperature (Decided in No.625 to 648, and 738)”...
Page 302 050 Reaction Time of Toner Supply Motor It is possible to change the reaction time of Toner Supply Motor. “Reaction time” is the time taken until the Toner Supply Motor starts working since “Toner Low” has been detected. The reaction time becomes 1 second longer if you increase the setting value by “+1”. Setting Range Step of increment 1 to 30...
Page 303 052 Dot Enhancement Level (Dither) It is possible to validate the Dot Enhancement function which makes an isolated dot look clearer. An isolated dot image is more emphasized if you increase the setting value. Setting value Contents Emphasized More emphasized Most emphasized Reference (1) An isolated dot image tends to look so weak.
Page 304: Maximum Length
056 Language NOTE This setting does not function. Keep the value unchanged. Setting Range 0 to 1 059 Count Unit (Counter A = Print Count) It is possible to specify the counting unit of Print Count. Setting value Contents Reference 1 linear meter 0.1 linear meter 1 square meter...
Page 305 063, 064 Cut Length 5 & 6 (Length Compensation for Tracing Paper / Film) It is possible to compensate the print length for the tracing paper and film. If you increase the setting value by “+1”, the length of the print becomes longer. Item No.
Page 306 065 Drum Reverse Time It is possible to change the period for the Drum reverse rotation. Developer Roller is strongly pressed to the Drum and that may cause an indentation on Developer Roller’s surface. The indentation may result in defective imaging. The Drum makes a reverse rotation in a given period twice after finishing a job.
Page 307 310 to 315 Main Motor Speed It is possible to adjust the speed of Main Motor for each type of paper separately. If you increase the setting value by “+1”, the motor speed becomes 0.02mm/second faster. Item Setting Item Setting Step of range increment...
Page 308 613 to 616 Judgment value for Additional Cut Length for Non-standard Size Prints It is possible to avoid the lack of trailing image on the non-standard size print, by providing additional paper length by service modes 617 to 620 (Additional Cut Length for non-standard size print).
Page 309 Reference (2) If the actual image length is longer than (or equal to) “A+B”, “C” is provided to the trailing edge of non-standard size print. A: Standard Cut Length (depends on roll width) B: Value of “Judgement Value for “Additional Cut Length for Non-standard Size Prints” C: Value of “Additional Cut Length for Non-standard Size Prints”...
Page 310 617 to 620 Additional Cut Length for Non-standard Size Prints It is possible to avoid the lack of trailing image on the non-standard size print, by providing additional paper length by service modes 617 to 620 (Additional Cut Length for non-standard size print).
Page 311 625 to 630 Print - Fuser Temperature (12”/11”/A3) It is possible to adjust the Fuser Temperature for 12”/11”/A3 wide media in the print cycle. You can specify the temperature for each type and size of media separately. The Fuser Temperature becomes 1 degree higher if you increase the setting value by “+1”. Item No.
Page 312 637 to 642 Print - Fuser Temperature (24”/22”/A1) It is possible to adjust the Fuser Temperature for 24”/22”/A1 wide media in the print cycle. You can specify the temperature for each type and size of media separately. The Fuser Temperature becomes 1 degree higher if you increase the setting value by “+1”. Item No.
Page 313 652 Density Compensation ON/OFF It is possible to decide whether Density Compensation is enabled. Setting value Contents Density Compensation Process is disabled Density Compensation Process is enabled Reference Density Compensation Process is performed as follows. 1. Several solid patches are created on Drum and are measured by Density Sensor at a regular interval of Main Motor operating time (No.655).
Page 314 653 Target Density NOTE This setting has been factory-adjusted. Keep the value unchanged. It is possible to change Target Density that should be achieved and maintained for consistent print density. If the current density does not meet Target Density, Regulation (Developer) Bias will be automatically adjusted based on the current Adjustment Level.
Page 315 660 to 665 Ready - Fuser Temperature It is possible to specify “Ready” temperature. You can specify the temperature for each type of media separately. This setting will be applied only when Fuser Temperature is below 50 C at turning on the machine. The Fuser Temperature becomes 1 degree higher if you increase the setting value by “+1”.
Page 316 738 Standby - Fuser Temperature It is possible to adjust the Fuser Temperature to be maintained while waiting for a print job. You can specify the temperature for the center and the sides separately. This setting is applied after the period of Fuser Temperature Overshoot (+10 C against “Ready - Temperature”...
Page 317 751 Disable HV Error Detection Mode “Disable HV Error Detection Mode” functions just as Error Mask Mode for high voltage errors. This allows the system to ignore service call errors regarding high voltage power supply (E-0031, E-0032, E-0033, E-0034) and prevents the concerning error code from being displayed both on the sub UI and the touch screen.
Page 318 755 Developer Bias Increment for Adjustment Level 1 and after NOTE This setting has been factory-adjusted. Keep the value unchanged. It is possible to change the amount (increment) of Developer Bias Adjustment. A specified increment of Developer Bias will be applied at switching to and as of Auto Adjustment Level 1.
Page 319 759 Regulation Bias Increment for Adjustment Level 2 and after NOTE This setting has been factory-adjusted. Keep the value unchanged. It is possible to change the amount (increment) of Regulation Bias on Auto Adjustment. A specified increment of Regulation Bias will be applied at switching to Auto Adjustment Level 2 and Level 3.
Page 320 768 Motor Setting NOTE This setting does not function. Keep the value unchanged. Setting value Contents Keep the value unchanged. Never use. 769 Wait Time of Media Feed Start The start timing of media feeding from the Roll Deck can be adjustable. This is used just in case a horizontal, weak, black line appears on a print in 10mm of the leading edge.
Page 321 772, 773 Horizontal Alignment of LED Block The LED Head Unit consists of 3 image blocks. If the alignment between Block A / B or Block B / C in the horizontal direction (main scanning direction) is out of position, a black (or white) line appears at the border of the Blocks. These are used to shift the concerning Block to right / left against Block B.
Page 322 Example) - The border between Block A/B has a white line. (= Block A displaced in left, apart from Block B)  Block A should move right to touch with Block B. white line at Border A/B Block B: reference Block A Block B In this case, increase No.772 to shift Block A to the right side.
Page 323 - The border between Block B/C has a black line. (= Block C displaced in left, overlapping Block B)  Block C should move right to remove overlap with Block B. black line at Border B/C overlap overlap Block B: reference Block B Block C In this case, increase No.773 to shift Block C to the right side.
Page 324 774 to 777 Dot Light Level on Border Pixel NOTE This setting has been factory-adjusted. Keep the value unchanged. Item No.772 or 773 cannot remove a “less than 1 pixel gap / overlap”. No.774 to 777 can strengthen or weaken the dot light level data for the border pixels. These compensate the dot light level programmed the concerning LED Head, not the strobe time.
Page 325 778, 779 Strobe Time Adjustment on Border Pixel The LED Head Unit consists of 3 image blocks. If the alignment between Block A / B or Block B / C in the horizontal direction (main scanning direction) is out of position by “less than 1 pixel gap / overlap”, a weak black (or white) line appears at the border of the Blocks.
Page 326 780 Leading Registration (Paper Tray) It is possible to specify where to start printing the image at the leading edge of a sheet from the Paper Tray. If you increase the setting value by “+1 “, the head of image is shifted 1mm downward toward the trailing edge As a result the leading margin becomes larger.
Page 327 782 Side Registration (Paper Tray) It is possible to specify where to start printing the image at the side edge of a sheet from the Paper Tray. If you increase the setting value by “+1 “, image is shifted 0.1mm to the right. Setting Range Step of increment 0 to 100...
Page 328 784, 785 Limit Temperature of LED Stitch Compensation NOTE This setting has been factory-adjusted. Keep the value unchanged. Under an extremely hot / cold emvironment, LED Blocks are compensated additionally. No. 784, 785 work as a threshold of the temperature for that. Item Setting Item Setting...
Page 329 788 Transfer Corona OFF Timing (Paper Tray) It is possible to adjust the timing that the Transfer Corona stops discharging during the print cycle. If you increase the setting value by “+1”, the timing to stop discharging is 1ms delayed. Setting Range Step of increment 1 to 999...
Page 330 789 to 800 Transfer Corona OFF Timing (Roll, Cut Sheet) It is possible to adjust the timing that the Transfer Corona stops discharging during the print cycle. This can be configured by every media type / width. If you increase the setting value by “+1”, the timing to stop discharging is 1mm delayed. Setting Range Step of increment 0 to 100...
Page 331 801 to 812 Separation Corona OFF Timing (Roll, Cut Sheet) It is possible to adjust the timing that the Separation Corona stops discharging during the print cycle. This can be configured by every media type / width. If you increase the setting value by “+1”, the timing to stop discharging is 1mm delayed. Setting Range Step of increment 0 to 100...
Page 332 8. 6. 4 Creating Backup It is possible to save the current parameters in Adjustment Mode as RAM file. RAM file can be used for backup measure. NOTE Prior to any attempts at significant changes on Adjustment Mode, export the current parameters to .RAM file.
Page 333 3. Specify a place to save the current parameter. It will be saved as both *.txt and *.ram in a folder that is automatically created there at this time. *.ram is used for backup of the current parameter. You can use it to import the parameter to machines.
Page 334 8. 6. 5 Restoring Configuration from Backup It is possible to restore the parameters by using a RAM file that has been saved before. This can be used for the following possible cases. - If the current parameters have loss or damage of data. - To apply parameters of a certain printer to another.
Page 335 4. Press [Save]. After confirmation, the read parameters will be sent to PW11720. WWW.SERVICE-MANUAL.NET 8-92...
Page 336: Running Mode
8. 7 Running Mode In Running Mode, the printer takes usual printing operation with no print media loaded. If you install any roll media, it is transported and ejected from the printer as usual as normal print. Note that the printer will continue printing till the media empty. NOTE Running Mode is not available in Service Mode.
Page 337 Starts jam masking against all the items Uncheck All Cancels jam masking against checked items media situation Specifies which situation to be masked. to be masked * “Early” is not available on the TASKalfa 2420w Back Returns to Service Mode Home WWW.SERVICE-MANUAL.NET 8-94...
Page 338 Error Mask screen Name Function Mask List Displays Mask items in the list Select mask target(s) that you want to mask. Starts error masking while item(s) is checked Check All Starts error masking against all the items Uncheck All Cancels error masking against checked items Back Returns to Service Mode Home WWW.SERVICE-MANUAL.NET...
Page 339 8. 8. 1 Mask List Jam Mask 0000 Feed Feeding Jam 0001 Manual Manual Jam 0002 Regist Registration Jam 0003 Sep Internal Jam 0004 Exit Fuser / Exit Cover Jam 0005 Paper Tray Pickup Jam (Paper Tray) Error Mask Main Motor Main Motor Error E-0010 Fuser Motor...
Page 340 8. 8. 2 Masking Jam 1. Press [Jam Error Mask] in Service Mode Home. Mask Target screen appears. WWW.SERVICE-MANUAL.NET 8-97...
Page 341 2. Press [Paper Jam]. WWW.SERVICE-MANUAL.NET 8-98...
Page 342 3. Select the desired target from the pull-down menu. Check any of “Remain” / “Delay” / “Early” then the concerning sensor starts to ignore the checked jam. NOTE Available mask situation selection (Remain, Delay, Early) may vary by the printer model. WWW.SERVICE-MANUAL.NET 8-99...
Page 343 8. 8. 3 Masking Error 1. Press [Jam Error Mask] in Service Mode Home. Mask Target screen appears. WWW.SERVICE-MANUAL.NET 8-100...
Page 344 2. Press [Error]. WWW.SERVICE-MANUAL.NET 8-101...
Page 345 3. Check items that you want to mask. Then the concerning sensor starts to ignore the checked Error. NOTE No “Door Open” mask is available. WWW.SERVICE-MANUAL.NET 8-102...
Page 346: Test Print Mode
8. 9 Test Print Mode It is possible to output some built-in test patterns as a stand alone plotter. No external device (controller / scanner / network connection) is required for test pattern plotting. Basic Setting screen Name Function Deck Displays media source in drop-down menu Choose one item that you want to use for test print.
Page 347 Option screen Name Function Positive / Choose “Negative” for B/W inverting. Negative Image Displays Image Enhancement Level Enhancement Mirror Enables horizontal reverse image Add Scale Adds scales on the test print Basic Setting Switches to Basic Setting screen Back Returns to Service Mode Home WWW.SERVICE-MANUAL.NET 8-104...
Page 348 8. 9. 1 Making Test Print 1. Press [Test Print] in Service Mode home. WWW.SERVICE-MANUAL.NET 8-105...
Page 349 2. Configure a test print job. In Basic Setting tab, you can configure media source, type, length, image pattern selection, number of sheets. 3. If necessary, open Option tab to configure some other settings. 4. Press [Start] to start printing the configured test print. WWW.SERVICE-MANUAL.NET 8-106...
Page 350 8. 9. 2 Built-in Test Pattern Image may vary by Side Code. Pattern No.1 Pattern No.4 Pattern No.7 Pattern No.2 Pattern No.5 Pattern No.8 Pattern No.3 Pattern No.6 Pattern No.9 Side Code 3 example: Pattern #4, Size Code 0: white image Pattern #4, Size Code 1: black image Pattern #5, Size Code 0: huge lattice Pattern #5, Size Code 1, 2, 3…: smaller lattice...
Page 351: Special Operation Mode
8. 11 Special Operation Mode Special Operation Mode has several kinds of special important functions to the machine. (1) Clears the following recorded error - E-0000 Fuser Temperature Rising Error - E-0001 Fuser Over Temperature Error - E-0002 Fuser Low Temperature Error - E-0003 / 0004 Fuser Temperature Abnormal Fall Error (2) Clears the following history - Jam History...
Page 352 Input screen Name Function Counter Name Displays the counter name you have chosen Reading Displays the current counter value stored in the memory Count Displays an input counter value by using On-screen Keypad Rewrite Applies a new counter value in “Count” to the selected counter Return Returns to Operation Target screen WWW.SERVICE-MANUAL.NET...
Page 353 8. 11. 1 Special Operation List All items grayed are not generally for field technician use Item No. Name Contents 0000 RAM Clear Clears any stored data in the memory 0001 Error Clear Clears E-0000 / 0001 / 0002 / 0003 / 0004 from the memory 0002 Jam History...
Page 354 8. 11. 2 Clearing Fuser Error, Jam/Error History 1. Press [Special Operation] in Service Mode Home. Operation Target screen appears. WWW.SERVICE-MANUAL.NET 8-111...
Page 355 2. Specify one item that you want to use from Name of mode menu. Press [Enter]. Item No. Clear Item Contents 0001 Error Clear Clears E-0000 / 0001 / 0002 / 0003 / 0004 from the memory 0002 Jam History Clears Jam records J-**** in Jam History list 0003 Error History...
Page 356 8. 11. 3 Reset of Bias Adjustment by Density Compensation Process NOTE After replacing Developer Unit, you must set bias adjustment by Density Compensation Process to “1”. Otherwise a darker image appears because the adjusted values are too high voltage for the refreshed Developer Unit.
Page 357 2. Select [0006 Dev. Clear] from Name of mode menu. Press [Enter]. 0006 Dev. Clear Initializes Developer / Regulation Bias adjusted with Density Compensation Process 3. Confirmation screen appears. Press [EDIT]. WWW.SERVICE-MANUAL.NET 8-114...
Page 358 4. Input screen appears. “1” Input with the on-screen Keypad. NOTE The required value for the TASKalfa 2420w to reset Bias Adjustment by Density “ 1” Compensation Process is 000000 “0000000” to “0000003” correspond to the Adjustment Level in Density Compensation Process.
Page 359 8. 11. 4 Toner Supply Mode 1. Press [Special Operation] in Service Mode Home. Operation Target screen appears. WWW.SERVICE-MANUAL.NET 8-116...
Page 360 2. Select [0007 Toner Supply1] from Name of mode menu. Press [Enter]. 0007 Toner Supply1 Starts toner supply / agitation in Developer Unit 3. Confirmation screen appears. Press [Agree]. Toner supply / agitation starts. This will take 10 minutes to complete. WWW.SERVICE-MANUAL.NET 8-117...
Page 361 4. Once you press [Agree], it will turn deactivated. Press [Return]. 5. The screen goes back to Operation Target Screen. The status window shows “warm up” during toner supply / agitation. After the completion, it changes to “standby”. WWW.SERVICE-MANUAL.NET 8-118...
Page 362 8. 12 Send Firmware Mode You can send a new version firmware program provided by the manufacturer to the printer. Note that the firmware program is named “K117X##A.mot”. NOTE A firmware update does not effect to the current parameters. They remain unchanged. But please be sure to make a backup in .RAM prior to any firmware update just in case.
Page 363 8. 12. 1 Sending Firmware to Printer 1. Press [Send Firmware] in Service Mode Home. Send Firmware screen appears. WWW.SERVICE-MANUAL.NET 8-120...
Page 364 2. Choose “Program Mode” from Mode Select menu if not displayed. WWW.SERVICE-MANUAL.NET 8-121...
Page 365 3. Press [Select File] to locate and open a .mot file that you want to apply. NOTE “K117X##A.mot” For TASKalfa 2420w, its firmware program is always named Do not open any other file. WWW.SERVICE-MANUAL.NET 8-122...
Page 366 4. Check for the program size and its checksum of the .mot file you have chosen. Press [Update] to send it to the printer. NOTE “Program Size” and “Checksum” vary by the firmware version. 8. 12. 2 In case of transmission failure 1.
Page 367 3. On PW11720 PCB Assy (4), switch the #2 of “DSW1” to ON. This allows the firmware to overwritten to PW11720 PCB Assy. DSW1 DSW1 DSW1 Operation Position Force Overwrite Position WWW.SERVICE-MANUAL.NET 8-124...
Page 368 4. Turn on the machine. On Send Firmware screen, choose “Boot Mode” from Mode Selection menu. 5. Select a firmware program file. Press [Send]. 6. When finished successfully, turn off the machine. 7. On PW11720 PCB Assy, switch #2 of “DSW1” to OFF. (original position) DSW1 Force Overwrite Position Operation Position...
Page 369: Scanner Utility
8. 13 Scanner Utility Scanner Utility 1.31 or later is a program that provides several scanner adjustments. - Shading (mono/color calibration) - Feed Distance (1:1) - Position (stitch) 8. 13. 1 Installation NOTE Below are the system requirements to operate Scanner Utility. ...
Page 370 3. Open 2 wire saddles (6) to release the Scanner USB Cable (5). 4. Connect the Scanner USB Cable to any USB port on your service PC. 5. Turn on both your PC and the printer. [Found New Hardware Wizard] for “K117SC” starts automatically. If the following message appears, choose “No, not this time”...
Page 371 NOTE If the auto detection does not work properly, click “Install from a list of specific location [Advanced]” to locate the driver software (.ini). 7. Click [Continue Anyway] when the following message is indicated. 8. Click [Finish] to close [Found New Hardware Wizard]. 9.
Page 372 8. 13. 1. 2 Installing Scanner Utility (1.31 or later) NOTE (1) Below are the system requirements to operate Scanner Utility.  Windows 2000 / XP operating system  USB 2.0 support  USB Driver for communication with Scanner Unit (version 1.30 or later) (2) Use version 1.31 or later.
Page 373 4. The name of the program folder can be changed. Click [Next]. 5. The following message is indicated when all files have been copied. Click [Finish]. WWW.SERVICE-MANUAL.NET 8-130...
Page 374 6. Open the properties panel for the “Scanner Utility” shortcut on “Start” _”Program” _ “Scanner Utility” _ “Scanner Utility”. (ex. right click on the shortcut) 7. Add the following text to the end of the target path. Click [Apply]. “ /Maintenance”...
Page 375 8. 13. 2 Starting Scanner Utility Start Scanner Utility by; “Start” _”Program” _ “ScannerUtility” _ “ScannerUtility” (Scanner Utility’s initial screen) WWW.SERVICE-MANUAL.NET 8-132...
Page 376: Displaying Scanner Information
8. 13. 3 Checking Scanner Information 8. 13. 3. 1 Displaying Scanner Information 1. Select [Scanner] - [Information]. 2. Scanner Utility acquires the scanner information and displays it. This is just an example. Revision Level (Scanner Firmware version) may vary from the actual one. WWW.SERVICE-MANUAL.NET 8-133...
Page 377: File Check
8. 13. 3. 2 File Check 1. Select [Scanner] - [Check Firmware]. 2. Press [Execute]. File Check OK: File Check failed: Press [OK] to select a proper firmware file to overwrite. See [8.13.5 Updating Scanner Firmware]. WWW.SERVICE-MANUAL.NET 8-134...
Page 378 Shading Sheet White Area Black Area The TASKalfa 2420w uses R/G/B light sources not only for color reading but also for monochrome reading. The scanner unit will be calibrated in monochrome/color at the same time. [Necessary situation] Shading is required after replacing;...
Page 379 NOTE (1) Shading adjustment should be performed with Shading Sheet (P/N: 305JZ70210, with a bar code). 1 sheet of Shading Sheet is included in the product accessary. Keep it in safe custody. (2) Shading adjustment should be performed with “Scanner Utility 1.31 or later”. (3) Please clean Scan Glasses before Shading.
Page 380 5. Set Shading Sheet in the TASKalfa 2420w accessory to the scanner noting the arrow direction. NOTE (1) Use the Shading Sheet in the TASKalfa 2420w Accessory. The Shading Sheet has a bar code on the top right. Bar code (2) Handle Shading Sheet with great care.
Page 381 NOTE (1) It takes about 7 minutes to complete Shading adjustment. (2) A sheet other than Shading Sheet (P/N: 305JZ70210) will be ejected by Scanner Utility’s auto chart distinction. After that the following confirmation appears. If you inserted a wrong chart to the scanner, remove it and set the correct Shading Sheet. Confirm that [Detect inserted chart automatically and perform calibration (Recommended)] is selected, and press [OK].
Page 382 7. When Shading is finished, the following message appears. Click [OK]. Open the scanner and reload Shading Sheet to the scanner and click [Confirm] to check the result of Shading. 8. The scan image of Shading Sheet is displayed. (It looks gray due to “calibrating” scan) Scan image of Shading Sheet WWW.SERVICE-MANUAL.NET 8-139...
Page 383 9. Scroll the image right and left to find a strong black/white line that runs vertically in one pixel wide. If there is no such line in the whole image, click [Close] to finish Shading. The following picture is an example of the line (due to “defective pixel”). A defective pixel needs individual pixel calibration in the later steps.
Page 384 10. If you will calibrate an individual pixel, select [Specified part]. 11. Move the pointer onto the scan image, and you will find a kind of red cursor. red cross cursor defective pixel WWW.SERVICE-MANUAL.NET 8-141...
Page 385 12. Move the red cursor so that its vertical line matches the defective pixel and click it. The defective pixel is selected by this operation. If there are some more defective pixels, select them in the same way. Match the vertical line to a defective pixel. 13.
Page 386 8. 13. 4. 2 Feed Distance (1:1) [Purpose of Feed Distance (1:1)] The lengths between actual original image and scan image may become different each other if you replace the Feed Roller of the Scanner Unit. This is caused by the mechanical play that each Feed Roller has. Actual original image Scan image “Feed Distance”...
Page 387 [Operation] 1. Measure the actual distance between “a point” and “c point” on the far left area of Scanner Adjustment Chart, and between “b point” and “d point” on the far right area. Let’s suppose that each distance is as follows. Between “a point”...
Page 388 4. Select [Adjust Feed Distance] from [Adjust]. Adjust Feed Distance Dialog is indicated. NOTE (1) If [Adjust Feed Distance] does not appear, follow the instruction below. a) Open the properties panel for a Scanner Utility shortcut. (ex. right click on the shortcut) b) Add the following text to the end of the target path.
Page 389 5. At first, input the actual distance between “a point” and “c point” in [Actual Distance], which you have measured at the former step “1”. Actual distance between “a” and “b” 6. Set Scanner Adjustment Chart to the scanner unit, and then click [Scan]. 7.
Page 390 8. The scan image of Scanner Adjustment Chart is indicated in the screen of Scanner Utility. Scan image of the chart Reference You can enlarge the scan image by dragging with the right button of mouse. Press the F2 Key when you would like to go back to the reduced image. 9.
Page 391 10. Click the input window of [Theoretical Distance]. A red cursor appears on the screen. 11. Click the mouse once at the measuring point. Click on the measuring point “a”. WWW.SERVICE-MANUAL.NET 8-148...
Page 392 12. Similarly indicate the enlarged image of “c point” and click the mouse at the measuring point. Click on the measuring point “c”. 13. Some value is indicated in [Theoretical Distance] according to 2 measuring points you specified at both steps “9” and “10”. This value means the distance between “a point”...
Page 393 15. Click [Set], and the calculated Feed Adjustment Value is validated. 16. It is necessary to check the balance of original feeding between left and right after validating the new setting. (Left side means “a-c points” side, and right side means “b-d points” side.) Repeat the former steps from “3”...
Page 394 (stitching) [Purpose of Position (stitching)] The scanner part of TASKalfa 2420w reads the image of original with 5 - CIS (Contact Image Sensor). As these CIS are arranged in 2 rows, there occurs a vertical gap of image among the image blocks.
Page 395 [Operation] 1. Connect the scanner unit and the PC directly with the USB 2.0 Cable. 2. Start Scanner Utility. 3. Select [Automatic Adjustment] from [Adjust]. Scanner Adjustment Dialog is indicated. NOTE If [Automatic Adjustment] does not appear, follow the instruction below. a) Open the properties panel for Scanner Utility shortcut.
Page 396 4. Set Stitch Adjustment Chart to the scanner noting the set direction and press [OK]. Stitch Adjustment Chart NOTE An incorrect feeding of Stitch Adjustment Chart may result in an error. Position Stitch Adjustment Chart with the center of Original Table and avoid skewing. 5.
Page 397 7. Select [Adjust Position] from [Adjust]. Adjust Position subscreen is indicated. 8. Set Stitch Adjustment Chart to the scanner again and press [Scan]. WWW.SERVICE-MANUAL.NET 8-154...
Page 398 9. A dialog to specify the scan settings is indicated. Simply click [Scan] to scan the chart. (You do not have to change any setting this time.) 10. The scan image of Scanner Adjustment Chart is indicated in the screen of Scanner Utility. Scan image of the chart WWW.SERVICE-MANUAL.NET 8-155...
Page 399 11. Enlarge the top center area by right dragging. Reference There is a gap between the leading edge of the scan image and the leading edge of the chart at this time. This band area shows that both of the edges do not match together. The gap will be removed after the completion of Position adjustment for the leading edge.
Page 400 12. Click “Origin” entry field of the subscreen. A red cross cursor appears on the scan image. WWW.SERVICE-MANUAL.NET 8-157...
Page 401 13. Click once on the top center of the chart in the scan image. A value appears in the field. Top center NOTE If you make any unintended clicks on the image, press [Close] and go back to step 8. WWW.SERVICE-MANUAL.NET 8-158...
Page 402 14. Press [Check] then [Set]. 15. A dialog appears to prompt confirmation of the result. Press [OK]. WWW.SERVICE-MANUAL.NET 8-159...
Page 403 16. Start Adjust Position again. Make a rescan of Stitch Adjustment Chart. Confirm the result of the adjustment. If the gap disappears, LE positioning is completed. No gap (band area) NOTE If the rescan image still has a gap, go back to step 11 to remove it completely. Every scan image has a blank band on the leading edge by the gap.
Page 404: Updating Scanner Firmware
8. 13. 5 Updating Scanner Firmware It is possible to install a new Firmware to the TASKalfa 2420w with Scanner Utility. 1. Select [Scanner] - [Setup Update]. 2. Press [Browse]. This is just an example. Revision Level (Scanner Firmware version) may vary from the actual one.
Page 405 3. Locate a folder where a firmware file is stored, and press [OK]. KM のﾄﾞｷｭﾒﾝﾄ 4. Confirm the selected file name and press [Setup]. 5. Select [Scanner] - [Update Firmware]. WWW.SERVICE-MANUAL.NET 8-162...
Page 406 6. Confirm the selected file name and press [Execute]. 7. The transmission of the firmware file starts. After the completion of transmission, turn off and on the machine power. WWW.SERVICE-MANUAL.NET 8-163...
Page 407 8. 14 Confirmation Wizard Service Software includes “Wizard” function to confirm the printer’s operation. Press [Wizard] button to start several wizard program. Wizard has several programs to confirm the machine operation. LED Head Confirmation can confirm LED Head performance / adjustment Cut Length Confirmation can confirm the cut length performance / adjustment Image Position Confirmation...
Page 408 8. 14. 1 LED Head Confirmation “LED Head Confirmation” can be used to confirm the current result (performance) of the following sub mode parameters. Concerning Title of page Sub Mode 1/4 LED Strobe Time for IST No.011 to 013 2/4 Vertical Alignment No.014, 015 3/4 Horizontal Alignment No.772, 773...
Page 409 2. [1/4 LED Strobe Time for IST] is used to confirm the image like diagonal lines. Make a test print to confirm diagonal lines on the image. Adjust the slide bar for clear, enough strong diagonal lines if needed. Block A Block B Block C Ex) Block A and C looks weaker than Block B...
Page 410 3. [2/4 Vertical Alignment] is used to confirm vertical alignment of the Blocks. Make a test print to confirm vertical alignment on the image. Tap ↑↓ buttons to adjust the amount of shift if needed. Ex) Block A is displaced toward TE against Block B. Block C toward LE. When confirmation is done, press [Next].
Page 411 4. [3/4 Horizontal Alignment] is used to confirm horizontal alignment of the Blocks. Make a test print to confirm vertical alignment on the image. Tap ←→ buttons to adjust the amount of shift if needed. Ex) White line at Block border Black line at Block Border NOTE (1) Changes on this page will shift the related Block in 1 pixel according to Sub Mode...
Page 412 5. [4/4 Strobe Time Adjustment on Border pixels] is used to confirm a weak black / white line at Block borders. Make a test print to confirm if there is such a line on the image. Select a button of degree of the strobe time (red is the current) if needed.
Page 413 8. 14. 2 Cut Length Confirmation “Cut Length Confirmation” can be used to confirm the current result (performance) of the following sub mode parameters. Concerning Title of page Sub Mode 1/3 Cut Length Adjustment (Plain Paper) No.018 3/3 Cut Length Adjustment (Tracing Paper) No.063 3/3 Cut Length Adjustment (Film) No.064...
Page 414 2. [1/3 Cut Length Adjustment (Plain Paper)] is used to confirm the cut length on the plain paper printing. Make a test print to confirm the cut length of the print. Move the slide bar to adjust the cut length if needed.
Page 415 3. If you confirm the cut length on the tracing paper or film, press the desired media button on [2/3 Media Select]. Make a test print to confirm the cut length of the print. Move the slide bar to adjust the cut length if needed.
Page 416 8. 14. 3 Image Position Confirmation “Image Position Confirmation” can be used to confirm the current result (performance) of the following sub mode parameters. Concerning Title of page Sub Mode 1/8 LE Registration / TE Margin (Roll Media) No.000 / 002 2/8 Side Registration (Roll Media) No.006 4/8 LE Registration / TE Margin (Cut Sheet)
Page 417 2. [1/8 LE Registration / TE Margin (Roll Media)] is used to confirm the image position (in the media feeding direction) on the roll media. Make a test print to confirm the image position on the print. Move the slide bar to adjust the LE Registration or TE Margin if needed.
Page 418 3. [2/8 Side Registration (Roll Media)] is used to confirm the image position (in the sideways) on the roll media. Make a test print to confirm the image position on the print. Move the slide bar to adjust the side registration if needed.
Page 419 4. If you confirm the image position on the cut sheet, press [Continue] on [3/8 Cut Sheet]. Or press [Finish] to close the wizard. 5. For the cut sheet, the way to confirm the image position is the same with the roll media. After scrolling the paged for the cut sheet, the wizard for the Paper Tray (option) is available if your machine has one.
Page 420 8. 14. 4 Media Feed Sensor Check “Media Feed Sensor Check” can be used to visually check the current status of the sensors on the media path. This example shows that the machine is now processing a print job with a short sheet from the roll deck.
Page 421 2. The screen shows the side section figure of the media path. “State” columns are displaying the current status of the sensors. Make a check in a checkbox besides the sensor name, and the related sensor’s location is illustrated as a circle in the figure. When a test print starts, the circle flashes. Sensor’s Current Status...
Page 422 8. 14. 5 Developer Replacement Procedure “Developer Replacement Procedure” can display the procedure with simple pictures step by step on the touch screen. 1. Press [Developer Replacement Procedure]. 2. [Developer Replacement Procedure] screen appears. Press [] button on the right side of the picture to turn the page forward. Press [►] button to show the procedure automatically like a slide show.
Page 423 Chapter 9 Appendix WWW.SERVICE-MANUAL.NET...
Page 424 9. 1 Schematic Wiring around Controller IPS Assy for TASKalfa 2420w (DC1 type) (relay at rear) (scanner) (relay at top) vacant Ethernet Interface 8 VGA (UI) COM (UPS) IPS Power vacant (PW11720) (UI) Interface 8 IPS Power Ethernet USB to PW11720...
Page 425: Overall Diagram
9. 2 Overall Diagram WWW.SERVICE-MANUAL.NET...
Page 426 WWW.SERVICE-MANUAL.NET Overall Circuit Diagram CONFIDENTIAL (USA/120V)
Page 427 WWW.SERVICE-MANUAL.NET Overall Circuit Diagram CONFIDENTIAL (EUR/230V)
Page 428 NOTE: 1. Items shown by gray are not used. 2. CA means the cable. SCANNER DIAGRAM WWW.SERVICE-MANUAL.NET CONFIDENTIAL...
Page 429: Setup Procedure
Chapter 10 Setup Procedure 1. Paper Tray Kit 1 2. Dehumidify Kit 3. Service Kit -1. Service Kit A -2. Service Kit B -3. Service Kit C WWW.SERVICE-MANUAL.NET...
Page 430 PROCEDURE (Paper Tray Kit 1) <Service Staff only> Ver. A.0 NOTE 117X06NL Paper Tray properly works with the printer firmware version or later. Upgrade the firmware as needed. Paper tray is to be installed on the printer’s rear. from right This procedure includes [Installation] [Software Setup] [Operation Check].
Page 431 Confirm the following parts are attached to the “Paper Tray Kit 1”. Table Assy Base Assy Connector Bracket Gasket Bind Screw Procedure this leaflet Usage Precautions Dimension (approx.) 345mm (D) (with installed, starting at printer body) 660mm (D), 50mm (H) (with the tray extended, maximum) Power Supplied via the machine Available Printer...
Page 432 1 Installation 1. Remove 4 tooth washer screws (1), loosen 2 tooth washer screws (2) to remove the Rear Cover (3). 2. Remove 2 bind screws (4) to remove the plate (5). Reference The screws and the plate are not used with the Paper Tray installed. 3.
Page 433 4. Fix Connector Bracket (6) to the machine with 2 bind screws (8). 5. Return the Rear Cover (3). 6. Remove 2 tooth washer screws (9) to remove Cover 31 (10). Reference Cover 31 is not used with the Paper Tray installed. 7.
Page 434 8. Hold the both sides of Base Assy (13). First put the small bars on the front (14) to the hook part on the machine (15) in parallel. Next push the lower part of Base Assy to the machine. WWW.SERVICE-MANUAL.NET...
Page 435 NOTE (1) The Gasket (16) should come over the Gasket (11) mentioned on step 7 like the following figure. (2) Be careful not to catch your finger in the space as shown below. Correct: Puts on top Wrong: gets caught 9.
Page 436: Software Setup
2 Software Setup 1. Turn on the machine. 2. On Home screen, press [? Help]. WWW.SERVICE-MANUAL.NET...
Page 437 3. Press [Service]. Input “8495107” to the pad and press [ENTER]. The screen will show Setup Menu 1 screen soon. 4. On the lower left “Rolls”, choose “2”. WWW.SERVICE-MANUAL.NET...
Page 438 5. Use the arrow keys to open [5/7 IPS Setup]. Press [Launch] in “IPS Service Software”. 6. Press [Yes]. 7. Press [Login] and next [Send Firmware]. WWW.SERVICE-MANUAL.NET...
Page 439 8. Choose “Program Mode” from Mode Select menu if not displayed. 9. Press [Select File] to locate and open 117X06NL.mot. 117X06NL.mot WWW.SERVICE-MANUAL.NET...
Page 440 10. Press [Send] to transfer and upgrade the firmware. ([Send] button has been just activated) 11. Press [Back], [Logout], [Close] to go back to Home screen. WWW.SERVICE-MANUAL.NET...
Page 441: Operation Check
3 Operation Check 1. Place several pieces of the sheets on the Paper Tray. 2. Rewind or remove a roll media on the Roll Deck. 3. On Home screen, select the cut sheet size / direction. (example: A3 Portrait) 4. On Home screen, press [? Help]. Roll: not found WWW.SERVICE-MANUAL.NET...
Page 442 5. Press [Configuration 2]. 6. Use the arrow keys to open page 3/4. Press [A3 Vector] in “Print Test Pattern”. WWW.SERVICE-MANUAL.NET...
Page 443 7. The test pattern will be printed on the sheet from the Paper Tray. The leading margin of the print should be in 1 to 5mm (approximately). Leading Edge of print 1 - 5mm 8. Press [OK]. This is the end of check. WWW.SERVICE-MANUAL.NET...
Page 444: How To Remove
4 How to Remove 1. Remove the loaded sheets. Retract the table if extended. 2. With holding the gray levers (1) on both sides, pull Table Assy (2). 3. Disconnect the harness (3) from Connector Bracket. 4. Remove 1 screw (4) on each side to unfix the release levers. WWW.SERVICE-MANUAL.NET...
Page 445 5. With holding the release levers (5) on both sides, remove Base Assy (6). NOTE For reinstalling, first fix the release levers (5) with the screws (4) and next mount Base Assy to the machine. WWW.SERVICE-MANUAL.NET...
Page 446 Additional Adjustment For additional adjustment of image length or leading margin, follow the instruction below 1. Press [Service]. Input “8495107” to the pad and press [ENTER]. The screen will show Setup Menu 1 screen soon. 2. Use the arrow keys to open [5/7 IPS Setup]. Press [Launch] in “IPS Service Software”. 3.
Page 447 4. Press [Login] and next [Test Print]. 5. Make test prints to confirm the installation result. Prepare cut sheets the customer will use. Test prints should be done in the size (A2, A3, A4) that the customer will use. 5-1. Place a sheet (in the smallest size to be used) on the Manual Feeder in Portrait direction. Select “Manual”...
Page 448 5-2. Select the test pattern No.1 S(0) and press [Start]. 5-3. Place a sheet (in the same size on step 5-1) on the Paper Tray in Portrait direction. Select “Paper Tray” in Deck menu. Select the size of the sheet in Size menu. 5-4.
Page 449 7. Measure the distance (between the top line and the 10th) on the leading part of the prints. (should be almost 100mm) Confirm whether the distance on the sample print by Paper Tray matches that of Manual Feeder. Top line to 10th (10mm x 10) The sample print(s) created on step 5 and 6 usually matches the distance, go to step 8.
Page 450 7-1. Press [Back]. 7-2. Press [Adjustment]. 7-3. Press the button starting with 800. Button label may vary by firmware version WWW.SERVICE-MANUAL.NET...
Page 451 7-4. Select one of 0871 / 0872 / 0873 from Item Code menu. A4：0871 A3：0872 A2：0873 7-5. Enter a possible required value and press [Apply]. If the distance on the sample print by Paper Tray is longer than that of Manual Feeder, increase the value.
Page 452 8. Confirm the leading registration on the OK samples. (should be 3mm +2mm) To adjust the leading registration, use the following mode No. A4：No.868 A3：No.869 A2：No.870 To shift the start point of printing images toward the trailing edge (wider leading margin), increase the value.
Page 453 9. Confirm the trailing margin on the OK samples. (should be 5mm +/-2mm) The sample print(s) usually satisfies the correct trailing margin, go to step 10. To adjust the trailing margin, use No.781. For smaller trailing margin, increase the value. Increasing the value by 1 shortens the trailing margin in about 0.5mm.
Page 454 10. Confirm the side registration on the OK samples. (should be 3mm +/-2mm) The sample print(s) usually satisfies the correct side registration, the operation check is done. To adjust the side registration, use No.782. To shift the image to the right (wider side margin on the left), increase the value. Increasing the value by 1 shifts the image to the right in about 0.1mm Value increased Value decreased...
Page 455 SETUP PROCEDURE (DEHUMIDIFY KIT) 1. Checking Contents The following parts are included in “DEHUMIDIFY KIT”. COVER 6 ASSY DEHUMIDIFY HEATER ASSY DEHUMIDIFY HEATER ASSY 2 SHEET (included for US/EU only) SHEET 4 (included for US/EU only) SEAL 8 EDGE SADDLE SWITCH INDICATION LABEL DEHUMIDIFY LABEL STAR WASHER SCREW...
Page 456 2. Removal of the PAPER DECK ASSY 1. Press the blue lever (1) on both sides to open the Upper Unit. 2. Remove 3 Screws (2) on each side, and then remove the Side Cover R (3) and Side Cover L (4). 3.
Page 457 5. Inside of the Roll Deck, remove 2 screws (7) on each side to remove Cover 20 (8) and Cover 19 (9). 6. Remove 2 tooth washer screws (10). Keeping the Roll Deck Cover (12) open, remove the whole Roll Deck Assy (11).
Page 458 3. Removing Guide Plate 1. On the right side, open 2 wire saddles (1) and remove 2 screws (2) to remove the bracket (3). 2. Remove 1 screw (4) to remove the switch cover (5). 3. On the left side, remove 1 screw (6). WWW.SERVICE-MANUAL.NET...
Page 459 4. Disconnect the connector (8) in the switch cover (7), and then remove the switch cover (7). 5. Remove 2 screws (9) to remove the Guide Plate C (10). Disconnect the connector (11). WWW.SERVICE-MANUAL.NET...
Page 460 6. With supporting the Guide Plate (12), remove 2 screws (13) on each side to remove Guide Plate (12). Never remove the Guide Plate (12) without supporting. Otherwise Guide Plate may fall. WWW.SERVICE-MANUAL.NET...
Page 461 4. Installing Kit Components to Roll Deck Assy 4-1. Installing Dehumidify Heater Assy DEHUMIDIFY HEATER ASSY White Harness 1. Remove the clear tape (1) from the back of the Roll Deck Assy. 2. Pass the harness (3) of the Dehumidify Heater Assy (2) through the rectangle hole on the bottom right of the Roll Deck Assy.
Page 462 4. Attach the Dehumidify Heater Assy to the Roll Deck Assy with 2 tooth washer screws (6) of the kit. 4-2. Installing Cover 6 Assy 1. Apply the Cover 6 Assy (1) to the inside of the Roll Deck Cover (2). Align sides NOTE Match the bottom end of the Cover 6 Assy with the...
Page 463 4-3. Applying Sheet 4 NOTE SHEET 4 as an independent part is included in US/EU model kit only. Width : 20mm SHEET 4 1. Noting the images below, apply the Sheet 4 (1) to the tab part of Roll Deck Cover. Sponge WWW.SERVICE-MANUAL.NET...
Page 464 5. Installing Dehumidify Heater Assy 2 DEHUMIDIFY HEATER ASSY 2 Black Harness 1. Fix Dehumidify Heater Assy 2 (1) to the Guide Plate with 2 tooth washer screws (2) of the kit. Pass the harness (3) of Dehumidify Heater Assy 2 through the rectangle hole on top right of Guide Plate. WWW.SERVICE-MANUAL.NET...
Page 465 6. Installing the parts to the machine 6-1. Applying Seal 8 1. Apply the Seal 8 (1) to the place illustrated in the pictures below. WWW.SERVICE-MANUAL.NET...
Page 466 6-2. Applying Sheet NOTE SHEET as an independent part is included in US/EU model kit only. Width : 29mm SHEET 1. Apply Sheet (2, wider) to the bottom of the Guide (1). Match the double-sided tape to the step. WWW.SERVICE-MANUAL.NET...
Page 467 6-3. Installing Switch 1. Apply the Switch Indication Label (2) and Dehumidify Label (3) to the switch case (1). 2. Install the Switch (4) to the switch case with the white dot upside. NOTE White dot upside WWW.SERVICE-MANUAL.NET...
Page 468 3. Remove 3 screws (5) to remove the switch case (1). 4. Connect the connector (6) in the switch case to the back of Switch (4). NOTE Connect the connector in either way. 5. Reinstall the switch case with 3 screws (5). WWW.SERVICE-MANUAL.NET...
Page 469 . Reinstallation of each unit 7-1. Reinstalling Guide Plate 1. Pass the harness (2) sticking out from Guide Plate (1) through the round hole (3) on the right side. Fix Guide Plate with 4 screws (4). NOTE Fit the tab parts (5) on both sides in the notches. WWW.SERVICE-MANUAL.NET...
Page 470 2. Connect the connector (6). 3. Fix GUDE PLATE C (8) with 2 screws (7). NOTE Guide Plate C (8) should ride on the rib (9). WWW.SERVICE-MANUAL.NET...
Page 471 4. Return the switch cover (10) in the original position. Connect the connector (11). 5. With pressing the switch cover (10) to the arrow direction (outward and downward), fix it with 1 screw (12). 6. With pressing the switch cover (14) to the arrow direction (outward and downward), fix it with 1 screw (13). WWW.SERVICE-MANUAL.NET...
Page 472 7. Pass the harness of Dehumidify Heater Assy (16) through the round hole on the bracket (15). Path the harness of Clutch (17) through the edge saddle (18). 17 18 8. Fix the bracket with 2 screws (19). Secure the harness (16) and the AC harness (20) with the wire saddles (21).
Page 473 7-2. Reinstalling Roll Deck Assy 1. With the Roll Deck Cover (1) open, place the Roll Deck Assy (2) in the arrow direction. Fix it with 2 tooth washer screws (3) on each side. NOTE Hook the tab part (4) on both sides to the notches (5). WWW.SERVICE-MANUAL.NET...
Page 474 2. Connect 2 connectors (6) from the Roll Deck Assy to the connectors respectively. Secure them with the wire saddles (7). 3. Reinstall the Cover 20 (9) and the Cover 19 (10) with 2 screws (8) on each side. WWW.SERVICE-MANUAL.NET...
Page 475 7-3. Reinstalling Side Cover 1. Clip off the blinder portion (2) on the Side Cover R (1). 2. Open the Upper Unit. Reinstall the Side Cover R (1) and Side Cover L (4) with 3 screws (3) each. NOTE See next page. WWW.SERVICE-MANUAL.NET...
Page 476 NOTE The hook part (5) should be seated in the rectangular hole (6) of the machine. 3. This is the end of the procedure. WWW.SERVICE-MANUAL.NET...
Page 477: Checking Contents
PROCEDURE (SERVICE KIT A) 1. Checking Contents Confirm the following parts are attached to the “SERVICE KIT A”. IMAGE CORONA ASSY OZONE FILTER 2 OZONE FILTER TR CORONA ASSY NAIL CLEANING JIG Procedure WWW.SERVICE-MANUAL.NET Service Kit A...
Page 478 NOTE 1. When the notification window appears in the UI screen, the Service Notification Count must be reset in the window once a Service Kit is installed. 2. Turn off the printer before operation. Unplug the power cord after an interval of two minutes for shutdown.
Page 479 3. Loosen 4 thumb screws (4) to release the Process Unit (5). 4. Hold the handgrip (6) on both sides. Pull the Process Unit (5) to the arrow direction to remove it from the machine. NOTE THIS SIDE UP 1. Gently place the Process Unit (5) on a flat surface in the correct direction.
Page 480 5. Pick the plastic area (8) on both sides. Release the pins (10) from the hook. Pull and remove the IMAGE CORONA ASSY (9) from the Process Unit. 6. Install both the pins (10) to the hooks to seat the new IMAGE CORONA ASSY in position.
Page 481 7. Hold the handgrip (6) on both sides. Slightly tilt the Process Unit downward. Put the square holes (11) onto the tapered edges of the positioning pins (12). Before inserting completely, pivot the unit upward to face each other. Finally push the unit to the machine. WWW.SERVICE-MANUAL.NET...
Page 482 8. Completely push the Process Unit (5) in the machine to be reseated in position. Then secure the thumb screws (4) to fix the Process Unit (5) to the machine. 9. Return the belt (2) to the pulley (3). WWW.SERVICE-MANUAL.NET...
Page 483 3. Replacement of TR CORONA ASSY 1. Pick the plastic area (1) on both sides. Pull and remove the TR CORONA ASSY (2) from the machine. TR CORONA ASSY 2. Pick the plastic area (1) on both sides of the new TR CORONA ASSY.
Page 484 3. Put your hands on the rear rim of the scanner unit just as you hold the Upper Unit. Push the entire unit down to the arrow direction. Hold here Hold here WWW.SERVICE-MANUAL.NET...
Page 485 4. Replacement of OZONE FILTER 1. Remove 3 Bind Head Screws (M4x6) (1) on each side. 2. Press the blue lever (2) on both sides to open the Upper Unit. 3. Slightly lift Side Cover R (3) / Side Cover L (4) up to the arrow direction to remove then from the machine. WWW.SERVICE-MANUAL.NET...
Page 486 4. Replace OZONE FILTER 2 (5) in Side Cover L (4) with a new one. 5. Replace OZONE FILTER (6) in the duct of the machine with a new one. 6. Replace OZONE FILTER (7) in the duct of the machine with a new one. WWW.SERVICE-MANUAL.NET...
Page 487 7. Make sure that the Upper Unit is open. Return Side Cover R and Side Cover L to the machine. Note that the hook part (8) should be seated in the square hole (9) of the machine. 8. Reinstall 4 of 6 screws (1) to loosely fix Side Cover R (3) and Side Cover L (4). NOTE Do not tighten the 4 screws (1) completely at this time.
Page 488 9. Put your hands on the rear rim of the scanner unit just as you hold the Upper Unit. Push the entire unit down to the arrow direction. Hold here Hold here NOTE The small top tab part (10) should fit inside of Side Cover R and Side Cover L. 10.
Page 489 5. Cleaning NAIL STRIPPING 1. Open Fuser Door (1). 2. Press down the beam (2) on the Fuser Door, and put the Pads in the gap on both sides. Reference Putting the Pads raises the Nail Stripping to rise. This allows easier works in the later step. WWW.SERVICE-MANUAL.NET...
Page 490 3. Pinch the Nail Cleaning Jig as shown in the following pictures. (Read the column below to clean the Nail Stripping.) NOTE (1) There are extremely hot parts inside the Fuser Door. Never touch any hot parts to avoid burning yourself. (2) Move the Nail Cleaning Jig to the arrow direction only.
Page 491 6. Reset of Service Notification Count NOTE Reset Service Notification Count every after a Service Kit is installed. Follow the instruction below to reset the count. When the notification window appears in the UI screen, the Service Notification Count must be reset in the window once a Service Kit is installed.
Page 492 3. Input a “reset password” and press [Enter]. (Please refer to the PASSWORD SHEET.) 4. This is the end of installing Service Kit A. WWW.SERVICE-MANUAL.NET...
Page 493 If Notification Window is not displayed; 1. Enter Service mode and open page [7/7]. Press [Reset]. 2. [Install] button will appear besides the concerning Service Kit to be applied. Press [Install]. WWW.SERVICE-MANUAL.NET...
Page 494 3. Input a “reset password” and press [Enter]. (Please refer to the PASSWORD SHEET.) 4. This is the end of installing Service Kit A. WWW.SERVICE-MANUAL.NET...
Page 495 PROCEDURE (SERVICE KIT B) 1. Checking Contents Confirm the following parts are attached to the “SERVICE KIT B”. Procedure IMAGE CORONA ASSY OZONE FILTER 2 OZONE FILTER TR CORONA ASSY TONER BOTTLE NAIL CLEANING JIG DEVELOPER ASSY PLASTIC BAG WWW.SERVICE-MANUAL.NET Service Kit B...
Page 496 NOTE 1. When the notification window appears in the UI screen, the Service Notification Count must be reset in the window once a Service Kit is installed. 2. Turn off the printer before operation. Unplug the power cord after an interval of two minutes for shutdown.
Page 497 3. Loosen 4 thumb screws (4) to release the Process Unit (5). 4. Hold the handgrip (6) on both sides. Pull the Process Unit (5) to the arrow direction to remove it from the machine. NOTE THIS SIDE UP 1. Gently place the Process Unit (5) on a flat surface in the correct direction.
Page 498 5. Pick the plastic area (8) on both sides. Release the pins (10) from the hook. Pull and remove the IMAGE CORONA ASSY (9) from the Process Unit. 6. Install both the pins (10) to the hooks to seat the new IMAGE CORONA ASSY in position.
Page 499 7. Hold the handgrip (6) on both sides. Slightly tilt the Process Unit downward. Put the square holes (11) onto the tapered edges of the positioning pins (12). Before inserting completely, pivot the unit upward to face each other. Finally push the unit to the machine. WWW.SERVICE-MANUAL.NET...
Page 500 8. Completely push the Process Unit (5) in the machine to be reseated in position. Then secure the thumb screws (4) to fix the Process Unit to the machine. 9. Return the belt (2) to the pulley (3). WWW.SERVICE-MANUAL.NET...
Page 501 3. Replacement of TR CORONA ASSY 1. Pick the white plastic area (1) on both sides. Pull and remove the TR CORONA ASSY (2) from the machine. TR CORONA ASSY 2. Pick the plastic area (1) on both sides of the new TR CORONA ASSY.
Page 502 3. Put your hands on the rear rim of the scanner unit just as you hold the Upper Unit. Push the entire unit down to the arrow direction. Hold here Hold here WWW.SERVICE-MANUAL.NET...
Page 503 4. Replacement of OZONE FILTER 1. Remove 3 Bind Head Screws (M4x6) (1) on each side. 2. Press the blue lever (2) on both sides to open the Upper Unit. 3. Slightly lift Side Cover R (3) / Side Cover L (4) up to the arrow direction to remove then from the machine. WWW.SERVICE-MANUAL.NET...
Page 504 4. Replace OZONE FILTER 2 (5) in Side Cover L (4) with a new one. 5. Replace OZONE FILTER (6) in the duct of the machine with a new one. 6. Replace OZONE FILTER (7) in the duct of the machine with a new one. WWW.SERVICE-MANUAL.NET...
Page 505 7. Make sure that the Upper Unit is open. Return Side Cover R and Side Cover L to the machine. Note that the hook part (8) should be seated in the square hole (9) of the machine. 8. Reinstall 4 of 6 screws (1) to loosely fix Side Cover R (3) and Side Cover L (4). NOTE Do not tighten the 4 screws (1) completely at this time.
Page 506 9. Put your hands on the rear rim of the scanner unit just as you hold the Upper Unit. Push the entire unit down to the arrow direction. Hold here Hold here NOTE The small top tab part (10) should fit inside of Side Cover R and Side Cover L. 10.
Page 507 5. Cleaning NAIL STRIPPING 1. Open Fuser Door (1). 2. Press down the beam (2) on the Fuser Door, and put the Pads in the gap on both sides. Reference Putting the Pads raises the Nail Stripping to rise. This allows easier works in the later step. WWW.SERVICE-MANUAL.NET...
Page 508 3. Pinch the Nail Cleaning Jig as shown in the following pictures. (Read the column below to clean the Nail Stripping.) NOTE 注意 1. There are extremely hot parts inside the Fuser Door. Never touch any hot parts to avoid burning yourself. 2.
Page 509 6. Replacement of DEVELOPER ASSY 6-1 Replacement of DEVELOPER ASSY tooth washer screws 1. Remove 2 (M4x6) (1) to remove Cover 31 (2). tooth washer screws 2. Remove 6 (M4x6) (3) to remove Cover 32 (4). (Read the column below.) NOTE Follow the instruction in this column to carefully remove Cover 32 (4).
Page 510 NOTE 3. Press the entire Hopper Unit on the top to check that it firmly stays on Developer Unit. If Hopper Unit is released, it may drop and cause toner scattering just after opening the Upper Unit on step 5. tooth washer screws 4.
Page 511 5. Press the blue lever (11) on both sides to open the Upper Unit. NOTE Be sure to open the Upper Unit. This will release the engagement between the DEVELOPER ASSY and the driving system. Removing the DEVELOPER ASSY with the Upper Unit closed may damage the drive gears.
Page 512 7. Disconnect the ground wire (14) and 1 connector (15). 8. Release 3 tabs (16) on the front. Turn the Hopper Unit (6) to the arrow direction to remove it from the DEVELOPER ASSY (13). Cover the toner supply hole (17) on the Hopper Unit with a plastic bag (18) at this time to avoid scattering toner.
Page 513 NOTE The old Developer Unit should be packed with the empty plastic bag (19) included in the kit. Dispose of the unit according to local regulations. 9. Remove the stickers (20) and the protection sheet (21) from the new DEVELOPER ASSY. Pinch tab area Pinch tab area WWW.SERVICE-MANUAL.NET...
Page 514 10. Return the Hopper Unit (6). Again, cover the toner supply hole (17) on the Hopper Unit with a plastic bag (18) to avoid scattering toner. Insert the hook parts of the Hopper Unit into the square holes of the DEVELOPER ASSY. Make sure that the Hopper Unit (6) is held on the DEVELOPER ASSY by the tab parts (16).
Page 515 11. Connect the ground wire (14) and 1 connector (15). 12. The Upper Unit should be open. Hold the handgrip on both sides. Place the wheel (24) on the rail of the drive side (left hand). Push the DEVELOPER ASSY (13) in the machine until it stops. Rail Rail WWW.SERVICE-MANUAL.NET...
Page 516 13. Slide the DEVELOPER ASSY (13) to the arrow direction (to your right hand). tooth washer screw 14. Secure the rail blocker R (9) to the rail opening with the (8). NOTE See the next page. WWW.SERVICE-MANUAL.NET...
Page 517 NOTE Fully insert the rail blocker R (9). If not enough pushed in, or if you skip step 13, it does not go into the opening completely. Please follow the instruction below to seat the DEVELOPER ASSY in position. not fit in 1.
Page 518 tooth washer 15. Secure the rail blocker L (10) to the rail opening with the screw (8). 16. Reconnect the connector (7). 17. Put your hands on the rear rim of the scanner unit just as you hold the Upper Unit. Push the entire unit down to the arrow direction.
Page 519 18. Return Cover 32 (4) and Cover 31 (2). NOTE After replacing DEVELOPER ASSY, you must set bias adjustment by Density Compensation Process to “1”. Otherwise a darker image appears because the adjusted values are too high voltage for the refreshed DEVELOPER ASSY.
Page 520 3. Put the dent area (4) under the holder (5) to firmly seat the bottom plate of the TONER BOTTLE to the toner supply position. from front 4. With pressing down the TONER BOTTLE (3), slide the green lever (6) to the arrow direction until it stops. When it stops, wait 10 seconds as it is.
Page 521 5. Slide the lever (6) back to its original position, and remove the TONER BOTTLE (3). NOTE It is impossible to remove the TONER BOTTLE unless the lever (6) completely moves to the original position. Do not attempt to remove the TONER BOTTLE by force if the lever is not at the original position.
Page 522 6-3 Reset of Auto Adjustment Level by Density Compensation Process NOTE Reset Auto Adjustment Level after replacing the Developer Unit. (See column on page 25) 1. Turn on printer. 2. Press [? – Help] on Home screen. 3. Press [Service]. 4.
Page 523 5. Service Configuration screen will appear. 6. Use the arrow keys to open [5/7 IPS Setup]. Press [Launch] in “IPS Service Software”. 7. Press [Yes]. WWW.SERVICE-MANUAL.NET...
Page 524 8. Press [Login] to log in Service Mode. 9. Press [Special Operation] in Service Mode Home. Operation Target screen appears. Reference The “Wizard” also has reset function of Auto Adjustment Level. (See page 34) WWW.SERVICE-MANUAL.NET...
Page 525 10. Select [0006 Dev. Clear] from Name of mode menu. Press [Enter]. Initializes Developer / Regulation Bias adjusted with 0006 Dev. Clear Density Compensation Process 11. Confirmation screen appears. Press [EDIT] to enter the input screen. WWW.SERVICE-MANUAL.NET...
Page 526 12. Input screen appears. Input “1” with On-screen Keypad. 13. The value is displayed in “Count” area. [Rewrite] will be activated. Press [Rewrite] to apply the new value to the printer. The value in “Reading” area will be changed to the new value. (This is the end of reset step.) WWW.SERVICE-MANUAL.NET...
Page 527 14. Press [RETURN]. Operation Target screen appears. WWW.SERVICE-MANUAL.NET...
Page 528 Reference The “Wizard” is also available to reset Auto Adjustment Level. Follow the instruction below. 1. [Wizard] will enter the wizard menu. Press [Developer Replacement Procedure]. 2. Press [Reset] to reset Auto Adjustment Level. 3. Go back to Home Screen and press [Special Operation] to proceed the work. Go to [6-4 Running “Toner Supply Mode”] WWW.SERVICE-MANUAL.NET...
Page 529 6-4 Running “Toner Supply Mode” NOTE For more stable print quality, run “Toner Supply Mode” twice in a row. This can prepare a good leveling the toner in the Developer Unit to obtain a satisfactory print quality. 1. Select [0007 Toner Supply1] from Name of mode menu. Press [Enter]. 2.
Page 530 3. Once you press [AGREE], the button will turn deactivated. Press [RETURN]. 4. The screen goes back to Operation Target screen. The status window shows “warm up” during toner supply / leveling. After the completion (in 10 minutes), it changes to “standby”. WWW.SERVICE-MANUAL.NET...
Page 531 5. After completion of the first “Toner Supply Mode”, press [Enter] to run the second “Toner Supply Mode”. 6. After completion of the second “Toner Supply Mode”, press [Back], [Logout], [Close] to cancel Service Mode. WWW.SERVICE-MANUAL.NET...
Page 532 7. UI screen will display Home screen after a short time. WWW.SERVICE-MANUAL.NET...
Page 533 7. Reset of Service Notification Count NOTE Reset Service Notification Count every after a Service Kit is installed. Follow the instruction below to reset the count. When the notification window appears in the UI screen, the Service Notification Count must be reset in the window once a Service Kit is installed.
Page 534 3. Input a “reset password” and press [Enter]. (Please refer to the PASSWORD SHEET.) 4. This is the end of installing Service Kit B. WWW.SERVICE-MANUAL.NET...
Page 535 If Notification Window is not displayed; 1. Enter Service mode and open page [7/7]. Press [Reset]. 2. [Install] button will appear besides the concerning Service Kit to be applied. Press [Install]. WWW.SERVICE-MANUAL.NET...
Page 536 3. Input a “reset password” and press [Enter]. (Please refer to the PASSWORD SHEET.) 4. This is the end of installing Service Kit B. WWW.SERVICE-MANUAL.NET...
Page 537 PROCEDURE (SERVICE KIT C) 1. Checking Contents Confirm the following parts are attached to the “SERVICE KIT C”. Procedure TR CORONA ASSY OZONE FILTER OZONE FILTER 2 PROCESS UNIT (with IMAGE CORONA ASSY) TONER BOTTLE NAIL CLEANING JIG DEVELOPER ASSY PLASTIC BAG WWW.SERVICE-MANUAL.NET Service Kit C...
Page 538 NOTE 1. When the notification window appears in the UI screen, the Service Notification Count must be reset in the window once a Service Kit is installed. 2. Turn off the printer before operation. Unplug the power cord after an interval of two minutes for shutdown.
Page 539 3. Loosen 4 thumb screws (4) to release the Process Unit (5). 4. Hold the handgrip (6) on both sides. Pull the Process Unit (5) to the arrow direction to remove it from the machine. NOTE THIS SIDE UP 1. Gently place the Process Unit (5) on a flat surface in the correct direction.
Page 540 5. Hold the handgrip (6) on both sides to take out the new Process Unit from the container. 6. Put the Process Unit on a flat surface. Remove the desiccant (8) and the tapes (9). 7. Remove the black shading paper (10). WWW.SERVICE-MANUAL.NET...
Page 541 8. Hold the handgrip (6) on both sides. Slightly tilt the Process Unit downward. Put the square holes (11) onto the tapered edges of the positioning pins (12). Before inserting completely, pivot the unit upward to face each other. Finally push the unit to the machine. WWW.SERVICE-MANUAL.NET...
Page 542 9. Completely push the Process Unit (5) in the machine to be reseated in position. Then secure the thumb screws (4) to fix the Process Unit to the machine. 10. Return the belt (2) to the pulley (3). WWW.SERVICE-MANUAL.NET...
Page 543 3. Replacement of TR CORONA ASSY 1. Pick the white plastic area (1) on both sides. Pull and remove the TR CORONA ASSY (2) from the machine. TR CORONA ASSY 2. Pick the plastic area (1) on both sides of the new TR CORONA ASSY.
Page 544 3. Put your hands on the rear rim of the scanner unit just as you hold the Upper Unit. Push the entire unit down to the arrow direction. Hold here Hold here WWW.SERVICE-MANUAL.NET...
Page 545 4. Replacement of OZONE FILTER 1. Remove 3 Bind Head Screws (M4x6) (1) on each side. 2. Press the blue lever (2) on both sides to open the Upper Unit. 3. Slightly lift Side Cover R (3) / Side Cover L (4) up to the arrow direction to remove then from the machine. WWW.SERVICE-MANUAL.NET...
Page 546 4. Replace OZONE FILTER 2 (5) in Side Cover L (4) with a new one. 5. Replace OZONE FILTER (6) in the duct of the machine with a new one. 6. Replace OZONE FILTER (7) in the duct of the machine with a new one. WWW.SERVICE-MANUAL.NET...
Page 547 7. Make sure that the Upper Unit is open. Return Side Cover R and Side Cover L to the machine. Note that the hook part (8) should be seated in the square hole (9) of the machine. 8. Reinstall 4 of 6 screws (1) to loosely fix Side Cover R (3) and Side Cover L (4). NOTE Do not tighten the 4 screws (1) completely at this time.
Page 548 9. Put your hands on the rear rim of the scanner unit just as you hold the Upper Unit. Push the entire unit down to the arrow direction. Hold here Hold here NOTE The small top tab part (10) should fit inside of Side Cover R and Side Cover L. 10.
Page 549 5. Cleaning NAIL STRIPPING 1. Open Fuser Door (1). 2. Press down the beam (2) on the Fuser Door, and put the Pads in the gap on both sides. Reference Putting the Pads raises the Nail Stripping to rise. This allows easier works in the later step. WWW.SERVICE-MANUAL.NET...
Page 550 3. Pinch the Nail Cleaning Jig as shown in the following pictures. (Read the column below to clean the Nail Stripping.) NOTE 1. There are extremely hot parts inside the Fuser Door. Never touch any hot parts to avoid burning yourself. 2.
Page 551 6. Replacement of DEVELOPER ASSY 6-1 Replacement of DEVELOPER ASSY tooth washer screws 1. Remove 2 (M4x6) (1) to remove Cover 31 (2). tooth washer screws 2. Remove 6 (M4x6) (3) to remove Cover 32 (4). (Read the column below.) NOTE Follow the instruction in this column to carefully remove Cover 32 (4).
Page 552 NOTE 3. Press the entire Hopper Unit on the top to check that it firmly stays on Developer Unit. If Hopper Unit is released, it may drop and cause toner scattering just after opening the Upper Unit on step 5. tooth washer screws 4.
Page 553 5. Press the blue lever (11) on both sides to open the Upper Unit. NOTE Be sure to open the Upper Unit. This will release the engagement between the DEVELOPER ASSY and the driving system. Removing the DEVELOPER ASSY with the Upper Unit closed may damage the drive gears.
Page 554 7. Disconnect the ground wire (14) and 1 connector (15). 8. Release 3 tabs (16) on the front. Turn the Hopper Unit (6) to the arrow direction to remove it from the DEVELOPER ASSY (13). Cover the toner supply hole (17) on the Hopper Unit with a plastic bag (18) at this time to avoid scattering toner.
Page 555 NOTE The old Developer Unit should be packed with the empty plastic bag (19) included in the kit. Dispose of the unit according to local regulations. 9. Remove the stickers (20) and the protection sheet (21) from the new DEVELOPER ASSY. Pinch tab area Pinch tab area WWW.SERVICE-MANUAL.NET...
Page 556 10. Return the Hopper Unit (6). Again, cover the toner supply hole (17) on the Hopper Unit with a plastic bag (18) to avoid scattering toner. Insert the hook parts of the Hopper Unit into the square holes of the DEVELOPER ASSY. Make sure that the Hopper Unit (6) is held on the DEVELOPER ASSY by the tab parts (16).
Page 557 11. Connect the ground wire (14) and 1 connector (15). 12. The Upper Unit should be open. Hold the handgrip on both sides. Place the wheel (24) on the rail of the drive side (left hand). Push the DEVELOPER ASSY (13) in the machine until it stops. Rail レール...
Page 558 13. Slide the DEVELOPER ASSY (13) to the arrow direction (to your right hand). tooth washer screw 14. Secure the rail blocker R (9) to the rail opening with the (8). NOTE See the next page. WWW.SERVICE-MANUAL.NET...
Page 559 NOTE Fully insert the rail blocker R (9). If not enough pushed in, or if you skip step 13, it does not go into the opening completely. Please follow the instruction below to seat the DEVELOPER ASSY in position. not fit in 1.
Page 560 tooth washer 15. Secure the rail blocker L (10) to the rail opening with the screw (8). 16. Reconnect the connector (7). 17. Put your hands on the rear rim of the scanner unit just as you hold the Upper Unit. Push the entire unit down to the arrow direction.
Page 561 18. Return Cover 32 (4) and Cover 31 (2). NOTE After replacing DEVELOPER ASSY, you must set bias adjustment by Density Compensation Process to “1”. Otherwise a darker image appears because the adjusted values are too high voltage for the refreshed DEVELOPER ASSY.
Page 562 3. Put the dent area (4) under the holder (5) to firmly seat the bottom plate of the TONER BOTTLE to the toner supply position. from front 4. With pressing down the TONER BOTTLE (3), slide the green lever (6) to the arrow direction until it stops. When it stops, wait 10 seconds as it is.
Page 563 5. Slide the lever (6) back to its original position, and remove the TONER BOTTLE (3). 。 NOTE It is impossible to remove the TONER BOTTLE unless the lever (6) completely moves to the original position. Do not attempt to remove the TONER BOTTLE by force if the lever is not at the original position.
Page 564 6-3 Reset of Auto Adjustment Level by Density Compensation Process NOTE Reset Auto Adjustment Level after replacing the Developer Unit. (See column on page 25) 1. Turn on Printer. 2. Press [? – Help] on Home screen. 3. Press [Service]. 4.
Page 565 5. Service Configuration screen will appear. 6. Use the arrow keys to open [5/7 IPS Setup]. Press [Launch] in “IPS Service Software”. 7. Press [Yes]. WWW.SERVICE-MANUAL.NET...
Page 566 8. Press [Login] to log in Service Mode. 9. Press [Special Operation] in Service Mode Home. Operation Target screen appears. Reference The “Wizard” also has reset function of Auto Adjustment Level. (See page 34) WWW.SERVICE-MANUAL.NET...
Page 567 10. Select [0006 Dev. Clear] from Name of mode menu. Press [Enter]. Initializes Developer / Regulation Bias adjusted with 0006 Dev. Clear Density Compensation Process 11. Confirmation screen appears. Press [EDIT] to enter the input screen. WWW.SERVICE-MANUAL.NET...
Page 568 12. Input screen appears. Input “1” with On-screen Keypad. 13. The value is displayed in “Count” area. [Rewrite] will be activated. Press [Rewrite] to apply the new value to the printer. The value in “Reading” area will be changed to the new value. (This is the end of reset step.) WWW.SERVICE-MANUAL.NET...
Page 569 14. Press [RETURN]. Operation Target screen appears. WWW.SERVICE-MANUAL.NET...
Page 570 Reference The “Wizard” is also available to reset Auto Adjustment Level. Follow the instruction below. 1. [Wizard] will enter the wizard menu. Press [Developer Replacement Procedure]. 2. Press [Reset] to reset Auto Adjustment Level. 3. Go back to Home Screen and press [Special Operation] to proceed the work. Go to [6-4 Running “Toner Supply Mode”] WWW.SERVICE-MANUAL.NET...
Page 571 6-4 Running “Toner Supply Mode” NOTE For more stable print quality, run “Toner Supply Mode” twice in a row. This can prepare a good leveling the toner in the Developer Unit to obtain a satisfactory print quality. 1. Select [0007 Toner Supply1] from Name of mode menu. Press [Enter]. 2.
Page 572 3. Once you press [AGREE], the button will turn deactivated. Press [RETURN]. 4. The screen goes back to Operation Target screen. The status window shows “warm up” during toner supply / leveling. After the completion (in 10 minutes), it changes to “standby”. WWW.SERVICE-MANUAL.NET...
Page 573 5. After completion of the first “Toner Supply Mode”, press [Enter] to run the second “Toner Supply Mode”. 6. After completion of the second “Toner Supply Mode”, press [Back], [Logout], [Close] to cancel Service Mode. WWW.SERVICE-MANUAL.NET...
Page 574 7. UI screen will display Home screen after a short time. WWW.SERVICE-MANUAL.NET...
Page 575 7. Reset of Service Notification Count NOTE Reset Service Notification Count every after a Service Kit is installed. Follow the instruction below to reset the count. When the notification window appears in the UI screen, the Service Notification Count must be reset in the window once a Service Kit is installed.
Page 576 3. Input a “reset password” and press [Enter]. (Please refer to the PASSWORD SHEET.) 4. This is the end of installing Service Kit C. WWW.SERVICE-MANUAL.NET...
Page 577 If Notification Window is not displayed; 1. Enter Service mode and open page [7/7]. Press [Reset]. 2. [Install] button will appear besides the concerning Service Kit to be applied. Press [Install]. WWW.SERVICE-MANUAL.NET...
Page 578 3. Input a “reset password” and press [Enter]. (Please refer to the PASSWORD SHEET.) 4. This is the end of installing Service Kit C. WWW.SERVICE-MANUAL.NET...
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