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Mita DP-2800 Service Manual

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R
DP-2800
SERVICE
MANUAL
Published in June '98
5A270760
DP-2800 (MCA) S/M

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Summary of Contents for Mita DP-2800

  • Page 1: Service Manual

    DP-2800 SERVICE MANUAL Published in June ’98 5A270760 DP-2800 (MCA) S/M...
  • Page 2 SERVICE MANUAL DP-2800...

  • Page 3: 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 4 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 5: Installation Precautions

    indicates that action is required. The specific action required is shown inside the symbol. General action required. Remove the power plug from the wall outlet. Always ground the copier. 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.

  • Page 6: Precautions For Maintenance

    • Always handle the machine by the correct locations when moving it..• Always use anti-toppling and locking devices on copiers so equipped. Failure to do this may cause the copier to move unexpectedly or topple, leading to injury................•...
  • Page 7 •Check that the power cable covering is free of damage. Check that the power plug is dust-free. If it is dirty, clean it to remove the risk of fire or electric shock..................•Never attempt to disassemble the optical unit in machines using lasers. Leaking laser light may damage eyesight.
  • Page 8 • After maintenance, always check that all the parts, screws, connectors and wires that were removed, have been refitted correctly. Special attention should be paid to any forgotten connector, trapped wire and missing screws..................• Check that all the caution labels that should be present on the machine according to the instruction handbook are clean and not peeling.

  • Page 9: Table Of Contents

    CONTENTS Chapter 1 PRODUCT INFORMATION Printer identification labeling ................ 1-1 Printer Specifications ................... 1-2 Front and rear views ..................1-5 Options ......................1-7 Environmental requirements ................ 1-8 About the toner ..................1-11 Chapter 2 INSTALLATION/OPERATION Unpacking ....................2-1 Installing the printer ..................2-3 Expanding memory ..................
  • Page 10 Chapter 6 TROUBLESHOOTING Board layouts ....................6-1 Diagnostic ....................6-2 General error handling ................6-7 Error messages ................... 6-8 Call-Service person errors ................ 6-13 Print quality problems ................6-33 Correcting a paper jam ................6-41 Correcting paper jams ................6-43 Appendix A PRINTER INTERFACE Parallel interface ..................

  • Page 11: Chapter 1 Product Information

    CONTENTS Chapter 1 PRODUCT INFORMATION Printer identification labeling ................... 1-1 US/Canada version ...................... 1-1 Printer Specifications ....................1-2 Recommended flash cards ..................1-4 Front and rear views ....................1-5 Front view ........................1-5 Internal assemblies ...................... 1-6 Rear view ........................1-6 Options ........................

  • Page 12: Printer Identification Labeling

    FOR HOME OR OFFICE USE REQUIREMENTS OF FEDERAL REGULATIONS 21 CFR CHAPTER 1, SUBCHAPTER J. MITA INDUSTRIAL CO.,LTD. 2 - 28 1 - CHOME TAMATSUKURI CHUO-KU OSAKA JAPAN MADE IN JAPAN This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

  • Page 13: Printer Specifications

    Printer Specifications Engine Specification Print method ……………………… Electrophotography laser scan Print speed (when printing multiple copies of the same page) ……………………… A4/11" × 8 ": 28 pages/min., B4 (257 × 364 mm): 18 pages/min., A3/11" × 17": 16 pages/min. Resolution (dpi) ………………… 600 horizontal/600 vertical Smoothing …………………………...
  • Page 14 Weight and dimensions Specification Main unit ………………………… Width: 56 cm (22") Height: 34.5 cm (13.6") Depth: 56.6 cm (22.3") Weight: 41.5 kg (18.7 lb.) Paper feeder ……………………… Width: 56 cm (22") Height: 24.7 cm (9.7") Depth: 56.6 cm (22.3") Weight: 19.5 kg (8.8 lb.) Power requirements Specification Voltage requirements ……………...

  • Page 15: Recommended Flash Cards

    Recommended flash cards The printer provide support for a JEIDA/PCMCIA category of memory card in both SRAM and flush types of up to 32 MB. Following is a list of makes and models of flush cards recommended for use with the printers. Note that the flush card to be used should be operable on 5 V DC.

  • Page 16: Front And Rear Views

    Front and rear views Front view Paper-full sensor Vent Option feeder connector MP (multi- Front control panel purpose) tray Front cover Upper paper cassette Paper feeder side cover Lower paper cassette Paper feeder Left side view Face-down tray Power switch Left side cover Face-up paper tray...

  • Page 17: Internal Assemblies

    Internal assemblies Toner container release lever (Green colored) Toner container Drum unit Drum release lever (Green colored) Fuser unit Fuser release lever Developer release lever Feed unit handle Developer Feed unit Rear view Harddisk drive slot Memory card slot Power receptacle Parallel interface Rear panel connector...

  • Page 18: Options

    Options The example option units are shown below. The instruction handbook come with the printer has more information regarding the accessories available for this model. Inboard duplexer Paper feeder supplied as standard Bulk paper First optional stacker paper feeder Second optional paper feeder Wheels (Caster kit)

  • Page 19: Environmental Requirements

    Environmental requirements Environmental conditions The Environmental requirements section on page Chapter 1-2 should be observed to ensure the optimum operation of the printer. The use of the printer in a location which does not satisfy the requirements may result in troubles and risk shortening its service life. The printer will work best if it is installed in a location that is: •...

  • Page 20: Clearance

    Clearance Allow the necessary minimum clearance on all sides of the printer (below). A total space of 92 by 138 cm (36 by 54") is needed. Clearance Dimensions Left 1 45 cm (17.7"), or 30 cm (12") if the face-up tray is not used. Front 2 60 cm (24") Right 3...

  • Page 21: Places To Avoid

    Places to avoid Avoid installing the printer in locations exposed to: • Direct drafts of hot or cold air. • Direct drafts of outside air. (Avoid locations next to outside doors.) • Sudden temperature or humidity changes. • Any source of high heat, such as a radiator or stove. •...

  • Page 22: About The Toner

    About the toner The printer should use the proprietary toner kit. To ensure the high print quality and long service life, the following handling precautions should apply. Caution: As the printers are designed to ensure the optimum print quality when used with the proprietary toner, we do not recommend to use any refilled toner containers that may be available commercially.

  • Page 23: Toner Storage

    Toner storage The toner contained in the container is susceptible to temperature and humidity. To ensure the high print quality, store the toner container in a place that satisfy the following environmental conditions: Temperature: –20 to 40°C (–4 to 104°F) Humidity: 15 to 90% RH Note: If the toner container is removed from the printer’s developer unit, put it in a...

  • Page 24: Chapter 2 Installation/Operation

    CONTENTS Chapter 2 INSTALLATION/OPERATION Unpacking ........................2-1 Unpacking the paper feeder ..................2-1 Unpacking the printer ....................2-2 Installing the printer ....................2-3 Connecting the printer and the paper feeder .............. 2-3 Installing toner ......................2-4 Developer initialization ....................2-7 Expanding memory ....................

  • Page 25: Unpacking

    Unpacking The printer is delivered in two cartons—the printer carton and the paper feeder carton. Since the paper feeder is installed under the printer, begin unpacking and installing with the paper feeder. Unpacking the paper feeder To unpack the paper feeder, proceed as diagrammed below. Warning: The paper feeder weighs approximately 20 kg (9 lb.).

  • Page 26: Unpacking The Printer

    Unpacking the printer To unpack the printer, proceed as shown in the diagrams below. Check that the listed parts are all present. Warning: The printer weighs approximately 41 kg (18 lb.). Lift it using two or more people. Do not cut tapes as they are reusable for future packing.

  • Page 27: Installing The Printer

    Installing the printer Installing the printer requires several steps. Proceed as follows in sequence. If the printer is used with casters, fit them now before proceeding. Connecting the printer and the paper feeder The printer should be mounted over the paper feeder as shown below. Align the pins 1 and the connector 2 on the paper feeder with the matching holes and the connector located at the bottom of the printer, then slowly lower the printer onto the paper feeder.

  • Page 28: Installing Toner

    Installing toner First open the top cover 1 atop the printer. Slide the toner container release levers 2 to the right side position. (This is the “open” position in which the toner container becomes removable.)
  • Page 29 Take the toner container from the toner kit supplied with the printer. With its label side facing down, give it a good shake (5 to 6 times). Label side Peel off the seal 1 on the bottom of the toner container by carefully pulling off.
  • Page 30 Insert the toner container in the printer as below. Align the two locating keys at the sides of the container with the mating slots in the printer. Caution: To avoid trouble, the toner container must be correctly seated and locked in the printer.

  • Page 31: Developer Initialization

    When the toner container is inserted in the printer properly, slide the toner container release levers to the left side position until it stops. After installing the toner container, close the top cover down firmly. Developer initialization The printer is shipped from the factory with no toner supplied in its developer unit. When the printer is first switched on after the toner container is installed in the manner above, there will be a delay of several minutes before the printer gets ready to print a job.

  • Page 32: Expanding Memory

    Expanding memory Expanded printer memory is required particularly when a memory error occurred. It enables the printer to print more complex pages, download more fonts, and define more macros. Since expanding memory requires removal of the main circuit board from the printer and handling of SIMM (single in-line memory module), the following procedures should be followed only by a qualified service technician.

  • Page 33: Notes On Handling Simm

    Notes on handling SIMM Before proceeding to install SIMM, read the following notes for handling the main circuit board and SIMMs. • Protect the electronics by taking these precautions: • Before touching the main circuit board, touch a water pipe or other large metal object to discharge yourself of static electricity.

  • Page 34: Getting Access To The Memory Sockets

    Getting access to the memory sockets The main circuit board of the printer is equipped with two sockets for memory expansion. Expansion memory is available in the form of a SIMM. To gain access to the main board, the printer’s rear panel should be removed. Warning: Turn the printer’s power off.
  • Page 35 Locate the sockets for the SIMMs on the main controller board by referring to the diagram on the next page. Locate the sockets for memory expansion on the main board. These sockets have 72 pins and are symbolized as YS1 and YS2. Expansion SIMM sockets KPDL ROM socket 2-11...

  • Page 36: Installing Simm

    Installing SIMM Insert the SIMM 1 into the socket 2 as shown. Carefully push the board upright until it snaps into place. Make sure that the catches at the ends of the socket fit into the holes 3 at the ends of the SIMM board. Testing the expansion memory After installing SIMMs in the printer, test the printer to see if the installation has been successful.

  • Page 37: Installing Kpdl

    Installing KPDL KPDL is an upgrade for adding implementation of the PostScript page description language. Upgrade is done by inserting a KPDL FONT ROM into an empty socket on the printer’s main circuit board. For details on KPDL, refer to the KPDL Upgrade Kit instruction handbook supplied with KPDL FONT ROM.

  • Page 38: Using The Control Panel

    Using the control panel This section provides explanation on how to use the printer’s control panel. This is more fully detailed in the instruction handbook . Front control panel The printer’s control panel has the LED indicators and a quartz message display to provide a quick access to the printer’s conditions.

  • Page 39: Indicators

    – Cycles reverse through the item selections or enters numeric values. ENTER/STATUS Prints a page of status information. During mode selection, this key finalizes numeric values and other selections for changing the printer’s configuration. Indicators Indicator Status Function 1–ONLINE/Green Steady The printer is on-line and ready to prints received data.

  • Page 40: Chapter 3 Maintenance/Adjustments

    CONTENTS Chapter 3 MAINTENANCE/ADJUSTMENTS Life expectancy of modules ..................3-1 Toner container ......................3-2 When to replace the toner container ................3-2 Toner container replacement ..................3-3 Toner saver mode ( EcoPrint ) ..................3-3 Cleaning the printer ....................3-4 Main charger unit ......................

  • Page 41: Life Expectancy Of Modules

    Life expectancy of modules The table below shows the nominal life expectancy for modules. Detailed part information for each module (except toner containers) can be found in Parts List . For refurbishment purpose, the modules are available as a kit after 350,000 pages have been printed.

  • Page 42: Toner Container

    Toner container The toner container is the only consumable that the printer requests (until it has printed 350,000 pages) to replace periodically during normal operation (user-replaceable). The following toner container is available for use with model. Model Life in pages* Toner kit 25,000 (1,100 g) *2 Based on letter or A4 size paper;...

  • Page 43: Toner Container Replacement

    Toner container replacement To replace the toner container, open the top cover 1. Pull the toner container release levers 2 to the right position as shown. Lift and pull out the toner container 3. Then, refer to section Installing toner in chapter 2 to install the new toner container. After installing the new toner container, several parts in the printer must be cleaned as instructed in section Cleaning the printer on page Chapter 3-4.

  • Page 44: Cleaning The Printer

    Cleaning the printer To avoid print quality problems, the following printer parts must be cleaned with every toner container replacement. Main charger unit The main charger unit should be cleaned in its two parts—the charger wire and grid (See the picture below.)—whenever the toner container is changed. Cleaning of the main charger can be done without needing any tools thanks to its self-cleaning system.
  • Page 45 To clean the charger wire, first open the front cover 1. Pull the cleaning knob (green) 2 slowly in and out a few times. This pulls a cleaning pad inside the drum unit along the wire. Then, clean the grid using the grid cleaner supplied with the toner kit. Take the grid cleaner 3 from protective bag in the new toner kit, and remove the cap 4.
  • Page 46 Attach the grid cleaner 3 to the drum unit as shown in the diagram below. Insert the fixture pin on the cleaner into the hole on the drum unit with the pad facing up. Hold and pull up the main charger, then draw it out until it stops. Then, push it all the way in.

  • Page 47: Cleaning The Paper Feed Unit

    Cleaning the paper feed unit The paper feed unit must be cleaned of paper dust whenever the toner container is replaced. To gain access to the paper feed unit, first, open the front cover. Draw out the paper feed unit by the handle (green) 5 on its front side. Cleaning the paper feed unit should be done on several parts—the separation charger, registration rollers, paper ramp, etc.
  • Page 48 Obtain the cleaning cloth (Locate in a new toner kit). Wipe the registration rollers 9 and paper ramp 0 as shown below. When cleaning is done, set the paper feed unit back in place by pushing on the handle. Make sure that the paper feed unit has been correctly seated, close the front cover.

  • Page 49: Replacing The Developer Unit

    Replacing the developer unit In case that the developer unit is to be removed from the printer for shipment or replacing to a new one, it should be handled following the instructions below. Also, a new developer unit, after installing, needs a special treatment that replenishes the developer with toner for printing.

  • Page 50: Installing A New Developer

    Installing a new developer To install a new developer, use the reverse manner as above. Note that the new developer is shipped from the factory with a protective cover 1 installed. Leave the protective cover installed with the developer until the developer has been installed in the printer. When the developer has been installed in the printer, grasp and pull the protective cover all the way out, as shown below.

  • Page 51: Feeding Toner Into The New Developer

    Feeding toner into the new developer The new developer unit is shipped from the factory with no toner contained. The developer can be automatically replenished with toner when a toner container is installed onto it and the printer is turned on. However, because the toner reservoir in the developer has a large capacity, it requires a lengthy period of time until a substantial amount of toner has been fed to get the printer ready.

  • Page 52: Updating The Firmware

    Updating the firmware The printer accepts update of the engine and system firmware as well as the front panel message data through the parallel interface. A PC that is connected to the printer’s parallel interface and capable of running in DOS mode is required for this purpose. Updating using these data is implemented by directly downloading the new firmware data for rewriting the flush memory chips in the printer.

  • Page 53: Downloading Engine Firmware Data

    Downloading engine firmware data To download engine firmware or panel message data, use Prescribe BOOT command. Perform in sequence: Relevant display Turn printer power on. Make sure the printer is Ready . Ready At the DOS prompt, send the following command to the Supervisor mode printer.

  • Page 54: Downloading Data From A Memory Card

    When downloading finishes, the display reverts to Supervisor mode Supervisor mode. In this state, turn power off. Turn power on again. Check the display shows Ready. Ready If not, refer to section Errors during downloading on page Chapter 3-14. Caution: Downloading controller firmware takes several minutes (depending on the processing speed of the computer used).

  • Page 55: Errors During Downloading

    Errors during downloading The following messages may be indicated on the message display when an error occurred during downloading firmware data. Take the appropriate corrective action. If the corrective action does not terminate the error, contact the manufacturer. Error message Meaning Corrective action Checksum error occurred...

  • Page 56: Adjusting The Transfer Bias

    Adjusting the transfer bias Printing on paper with extra thickness of 91 to 200 g/m , such as postcards, OHP, envelopes, etc., tend to result in faint printing because of insufficient penetration of transfer bias developer at the transfer roller. Whereas, for thin paper types, the regular transfer bias may be so strong that the paper cannot effectively leave the drum surface after transferring, causing paper jam.

  • Page 57: Chapter 4 Operation Overview

    CONTENTS Chapter 4 OPERATION OVERVIEW Electrophotographics system .................. 4-1 Electrophotographic cycle ................... 4-1 Amorphous-silicon drum ..................... 4-2 Charging the drum ...................... 4-3 Toner ........................... 4-4 Exposure ........................4-5 Scanner unit ........................ 4-6 Laser scanning ......................4-9 Development ......................4-10 Developing roller bias ....................4-11 Image transfer ......................
  • Page 58 Logic controller system ..................4-43 Main logic controller overview ................... 4-43 Controller block diagram ................... 4-44 Printing data processing .................... 4-45 Main logic component ....................4-46 API ROM socket (U09) ....................4-46 API ROM socket pin assignment ................4-47 System DiMM (YS3) ....................4-48 RAM (U11 and U12) ....................

  • Page 59: Electrophotographics System

    Electrophotographics system Electrophotography is the technology used in laser printing which transfers data representing texts or graphics objects into a visible image which is developed on the photosensitive drum, finally fusing on paper, using light beam generated by a laser diode. The key features for the electrophotography system of the printer are: •...

  • Page 60: Amorphous-Silicon Drum

    Amorphous-silicon drum The printer uses the long lasting amorphous silicon (a-Si) drum. The photoconductive layer is coated over the aluminum cylinder base as shown below. The aluminum base is electrically grounded to the ground. The photoconductive layer is charged evenly over its surface by positive high voltage charging (corona charging) given by the main charger unit (the wire and grid).

  • Page 61: Charging The Drum

    Charging the drum Figure below is a simplified diagram of the electrophotographics components. Charging the drum is done by the main charger unit marked A in the diagram. As the drum B rotates in a “clean (neutral)” state, its photoconductive layer is given a uniform, positive (+) corona charge dispersed by the main charger wire A.

  • Page 62: Toner

    Toner The toner is fed from toner kit. The toner is of dry mono component type and comprised of the following substances as depicted below. Single component toner A Resin B Ferrite C Silica D Polisher...

  • Page 63: Exposure

    Exposure The charged surface of the drum B is then scanned by the laser beam from the scanner unit A. The laser beam is switched on for a black dot and off for a white (blank) dot according to the print data. Whenever it is illuminated by the laser beam, the electrical resistance of the photoconductor is reduced, the potential on the photoconductor is also lowered from approximately 250 V to 20 V, effectively driving the charge through the a-Si layer down to the aluminum base.

  • Page 64: Scanner Unit

    Scanner unit The 600 dpi scanner unit includes the laser diode that produces the 670 nm wavelength laser beam. This wavelength is specifically designed to match the photoconductive response of amorphous silicon. The diagrams below show the components inside the scanner unit in two views—horizontal and vertical.
  • Page 65 SIDE VIEW Drum 1 Laser diode ........emits diffused, visible laser. 2 Collimeter lens ......... aligns the laser beam to the cylindrical lens. 3 Cylindrical lens ......... compensates the slant angle at which the laser beam hits a polygon mirror segment. 4 Polygon mirror (motor) .....
  • Page 66 Secondary f-theta lens Polygon mirror Primary f-theta lens θ θ Laser diode 7 Diversion mirror ........ diverts the laser beam vertically onto the drum. Note the diffused laser beam finally pin-points on the drum. 8 Protective glass ........ prevents dust, debris, etc., from entering the scanner assembly.

  • Page 67: Laser Scanning

    Laser scanning The laser beam hits one of ten polygonal mirrors. As the mirror revolves (at the nominal revolution of 17,700 rpm), the laser beam reflects off of it and reaches the charged drum surface in a lengthwise manner. A pair of (plastic) lenses provides focusing the horizontally sweeping laser beam onto the drum.

  • Page 68: Development

    Development The latent image constituted on the drum is developed into a visible image. The developing roller contains a magnet core and an aluminum cylinder rotating around the magnet core at a speed twice faster than that of the drum. Toner attracts to the developing roller since it is magnetic.

  • Page 69: Developing Roller Bias

    Developing roller bias The developing bias is adjusted so that the toner, charged positive while each particle is rubbing each other in the developer, is selectively developed onto the area of low potential by adhering. The bias is AC weighted, positive DC power source. Since the gap between the developing roller and the drum is wider than the average diameter of the toner, the toner should fly over to the drum surface to accomplish development.
  • Page 70 Area not exposed by laser Surface potential = Area exposed by laser 250 V Developing roller bias 160 V DC + 1.8 kV AC Developing Toner 20 V A toner replenishment sensor is provided within the developer. As the toner supply from the toner container dwindles and the toner level lowers in the reservoir, the sensor translates it through its sensing plate, urging the toner motor to feed more toner.

  • Page 71: Image Transfer

    Image transfer The image developed by toner on the drum (A below) is transferred onto the paper using the electric charge attraction given by the toner itself and the transfer roller (B below). The transfer roller is negatively biased so that the positively charged toner is attracted onto the paper while it is pinched by the drum and the transfer roller.

  • Page 72: Fusing

    Fusing The toner on the paper is permanently fused onto the paper as it passes between the florin- finished heat roller (A below) and the pressure roller (B below) in the fuser unit. The toner is molten and pressed into the paper. The heat roller has two halogen lamps, turning alternatively on depending on the size of the paper passing through to maintain the preheat temperature at approximately 185°C/365°F.
  • Page 73 Heater(s) activated Paper size Middle heater Edge heater Idle A3, A4 landscape Letter landscape Letter, A4, A5 Ledger The heat roller temperature is constantly monitored by the engine control circuit using the a thermistor. In the above table, each eater is turned “On” as commanded by the thermistor. The “On+”...

  • Page 74: Drum Cleaning And Erasing Static Charge

    Drum cleaning and erasing static charge The drum needs to be physically cleaned of toner which is remaining on its surface in the development process. The cleaning blade (A below) is constantly pressed against the drum and scrapes the residual toner on the drum off to the refresher roller (B below). The refresher roller drives the toner to the spiral (fins) roller (C below).

  • Page 75: Typical Photo Process Timing Chart

    Typical photo process timing chart The following chart shows the signals used for photo processing. These signals activate the corresponding device in the following timing sequences. A simple description for these signals follow. Page 1 Page 2 MOTOR PAPER MHVDR ERASER BIAS THVDR...

  • Page 76: Paper Feeding System

    Paper feeding system The paper feeder providing two paper cassettes is fitted to the printer externally at the bottom of the printer. The printer can be installed with up to 6 cassettes by adding up to two more paper feeder options (basically the same paper feeder fitted as the standard paper feeder).

  • Page 77: Paper Control Signals

    Paper control signals The following diagram shows the control signals that control the sensors and the rollers for guiding paper. The engine controller provides these signals in conjunction with the electrophotography process that is driven by the main controller system. Engine Controller Face-down paper-full...

  • Page 78: Paper Feeding Components

    Paper feeding components The figure below shows the locations of the sensors, clutches, microswitches, and fans. Each number corresponds to the description in the table on the next page. The board Ids accompany those parts mounted on the board. 1 @ * ^ & ‹...

  • Page 79: Control Devices

    Control devices Symbol Title Location Board Controller box fan (FAN3) Controller box Printer side cover switch Face-down unit KP-552 Face-down paper-full sensor Face-down unit Face-down jam sensor Face-down unit Face-up jam sensor Face-down unit Face-up/down solenoid Face-down unit Scanner fan (FAN4) Top cover Interlock switch—front Front frame...

  • Page 80: Paper Feeder Control Devices

    Paper feeder control devices Symbol Title Location Board Upper cassette paper sensor/bottom limit Upper cassette KP-583 sensor Upper cassette paper size sensors 1/2/3 Upper cassette KP-581 Upper cassette LED Upper cassette KP-585 Upper cassette paper level switch Upper cassette Lower cassette paper sensor/bottom limit Lower cassette KP-583 sensor...

  • Page 81: Printing From Paper Feeder Cassettes

    Printing from paper feeder cassettes At the moment the logic controller finishes data processing, the logic controller passes PRINTN signal to the engine controller. The engine controller then activates the clutch for the feed roller of the currently selected cassette (in the paper feeder) and the sub clutch in the printer to start feeding paper.

  • Page 82: Printing From The Mp Tray

    PAPER SIZE SENSING Paper size Ledger (portrait) A3 (portrait) B4 (portrait) Legal (portrait) B5 (portrait) Letter (landscape) A4 (landscape) A5 (landscape) Off=high/On=low Printing from the MP tray The presence of paper in the MP tray is detected by the MP feed sensor (See page Chapter 4-19).

  • Page 83: Printing From The Optional Envelope Feeder

    MP TRAY SIZE SENSING Paper size Ledger A4 (landscape) Letter (landscape) 8" width Letter (portrait) Legal A4 (portrait) 8" width (portrait) B5 (portrait) A5 (portrait) Hagaki 5" width Printing from the optional envelope feeder The envelope feeder (or universal feeder) is electrically connected to the printer via a connector at the right side panel.

  • Page 84: Paper Jam Detection

    Paper jam detection The sensors illustrated in the following diagram are used to track the paper while it is moving through the printer. More detailed sensor information can be found from the diagrams in section Paper feeding components on page Chapter 4-20. 4-26...
  • Page 85 Each sensor coded above represents the following locations. When a paper jam occurs, the code(s) is actually indicated on the message display in order for the user to easily know where to remove the jammed paper. Code Suggested jam location Envelope feeder (optional) MP tray Top paper feeder jam door...

  • Page 86: Message Display At A Paper Jam

    Message display at a paper jam When paper jammed within the printer system, the sensor(s) triggers the signal to the engine controller, which indicates the jam position. At the same time, the engine controller causes the message display to show Open front cover. This urges the user to refer to the instructions that is affixed at the back side of the front cover of the printer.

  • Page 87: Print Timing Charts

    Print timing charts Line speed=125 mm/s; feed speed=263 mm/s [paper feeder], 125 mm/s [MP tray] A4 landscape feed [210 mm]/28 ppm/Cass 6 4-29...
  • Page 88 A3 [420 mm]/16 ppm/Cass 6 4-30...
  • Page 89 A4 [210 mm]/26 ppm/MP tray [Cassette mode] 4-31...

  • Page 90: Chapter 5 Disassembly

    CONTENTS Chapter 5 DISASSEMBLY General Instructions ....................5-1 Before starting disassembly ..................5-2 Disassembly ....................... 5-3 Developer unit ......................5-3 Removing the paper feed unit ..................5-6 Removing the transfer roller unit .................. 5-7 Removing the drum unit ....................5-9 Main charger unit .......................

  • Page 91: General Instructions

    General Instructions This chapter provides procedures for removal and replacement of field replacement components. For other components not shown in this chapter, the diagrams in the Parts List attached with this handbook will help locate the component. For replacement of a component, use the reverse of the removal procedures explained in this chapter.

  • Page 92: Before Starting Disassembly

    Before starting disassembly Warning: Before proceeding, unplug the power cord from the printer and the power supply. Warning: Never attempt to operate the printer with a component removed. Caution: The printer uses electrostatic-sensitive parts inside (on boards, laser scanner, etc.). Provide an antistatic (discharging) device, such as a wrist strap, that can effectively discharge your body before touching boards, laser scanner, etc.

  • Page 93: Disassembly

    Disassembly Developer unit First, the toner container must be removed. Open the top cover. The toner container 1 must be removed first: Pull the toner container release lever 2 as below. Pull the toner container 3 slowly up, keeping it as level as possible.
  • Page 94 Open the front cover. Locate the developer unit release lever 1 and turn it clockwise to the upper position. Grasp the developer’s front end as shown below and slowly draw the developer 2 out from the printer. Notes: • After removing the developer, seal it in the protective bag and place it on a flat surface. Do not place the developer in a dusty area.
  • Page 95 REPLACING THE DEVELOPER UNIT To replace the developer unit into the printer, be sure to align the guides and rails on the drum unit with each other. Do not force to slide the drum unit in unless they are properly aligned with each other.

  • Page 96: Removing The Paper Feed Unit

    Removing the paper feed unit The paper feed unit can be removed from the printer without using a tool. Note: If duplexer is installed in the printer, uninstall it before proceeding. While holding and pushing the locking tab 1 at the left side of the paper feed unit, draw the paper feed unit all the way out.

  • Page 97: Removing The Transfer Roller Unit

    Removing the transfer roller unit Before removing the transfer roller unit, remove the paper feed unit out of the printer. Then, the transfer roller comes out without needing a tool. Caution: Do not touch the transfer roller (sponge) surface. Oil and dust (particles of paper, etc.) on the transfer roller can significantly deteriorate the print quality (white spots, etc.).
  • Page 98 INSTALLING THE TRANSFER ROLLER UNIT To install the (new) transfer roller unit, align the mounting holes 1 of the transfer roller unit with the joints 2 of the paper feed unit. CLEANING THE TRANSFER ROLLER UNIT To clean the transfer roller, remove the transfer roller unit out from the feed unit as shown on page 5-7.

  • Page 99: Removing The Drum Unit

    Removing the drum unit Caution: Removing or reinstalling the drum unit requires the drum protective cover supplied with the new drum kit package. Do not forcibly attempt to remove the drum without following the procedures provided below, using the drum protective cover.

  • Page 100: Main Charger Unit

    Main charger unit Pull the main charger 1 until it stops. While pushing the (white) locking button 2 the printer, pull the main charger unit all the way out. The main charger unit is technically explained in chapter 4, Operation . 5-10...

  • Page 101: Removing The Controller Cover

    Removing the controller cover Remove the controller cover by removing the screws 1 below. Disconnect the two connectors 2 on CONN1 board at the back. 5-11...
  • Page 102 Open the front cover and remove the screws 3 below. Remove the screws 4 and 5. All these are self-tapping screws of the same type. Then, remove the top cover. 5-12...

  • Page 103: Removing The Controller Box

    Removing the controller box Remove the middle bracket by removing four screws 1. Remove the connectors 2. 5-13...
  • Page 104 Remove two screws 3 to remove the controller box. 5-14...

  • Page 105: Right Side Cover/Feeder Unit

    Right side cover/Feeder unit Remove four screws, 1 and 2, and remove the right side cover. Remove three screws 3. 5-15...
  • Page 106 Remove the screw 4 at the front side. Remove the controller box (Refer to Removing the controller box , the previous section.), then remove the screw 5 below to remove the ground wire (black) 6 of the feeder assembly. After removing the above screw, set the drum unit release lever to the left (down) position. Then, carefully remove the feeder assembly.

  • Page 107: Removing The Face-Down Unit

    Removing the face-down unit Remove the face-up tray by pulling the left and right arms of the tray while pushing in the locking tab 1 for each arm. Remove six screws 2 and remove the left cover. 5-17...
  • Page 108 Remove the screw 3 on the front side (below). Then, remove the one on the rear side. 5-18...

  • Page 109: Removing The Manual Feed Roller/Separator

    Removing the manual feed roller/Separator While pressing the locking tab 1 in, remove the manual feed roller. To remove the separator 2, use a small flat blade screwdriver in the manner shown below. 5-19...

  • Page 110: Drive Gears Assembly

    Drive gears assembly Begin removing the driver gear assembly by first removing the sub gears assembly C. This assembly mounts gears for driving the toner container and the waste toner conveyer. To remove this assembly, remove two screws 1. Sub gears assembly C Then, remove the waste toner conveyer housing.
  • Page 111 To remove the main motor assembly, remove all screws indicated as 3 below. Main motor assembly To remove the drive gears assembly, remove three screws 4 as shown below. 5-21...

  • Page 112: Removing The Fuser Unit

    Removing the fuser unit The fuser unit can be detached from the feed unit without needing a tool. To remove the fuser unit, first, open the feed unit. To open the feed unit, raise and hold the (green) handle and pull the feed unit frontwards gently. Warning: The fuser is hot after the printer was running.
  • Page 113 To remove the fuser unit, unlatch the fuser unit from the feed unit. This is done by releasing the latch at both sides of the fuser unit in the manner shown below. Latches: Move to the arrowed direction to release the fuser unit.
  • Page 114 Removing heater lamps The fuser unit includes two heater lamps which are different in function and shape (length). To gain access to the heater lamps in the fuser, first, remove the cover (on the connector side) as shown below, by removing two screws 1. Fuser unit Remove the screw 2 shown below and remove the terminal.
  • Page 115 Remove the appropriate screw 3 to remove the lamp. Warning: The heater is extremely hot immediately after the printer was running. Allow substantial period of time until it cools down. Also, the heater is fragile: Handle it with great care. Cautions: •...

  • Page 116: Removing The Laser Scanner

    Removing the laser scanner To remove the laser scanner, the top cover and the face-down unit must be removed first. For details, see page 5-12. Warning: The laser scanner contains electrostatic-sensitive parts inside (laser diode, etc.). Before touching the laser scanner, provide an antistatic (discharging) device, such as a wrist strap, that can effectively discharge your body.

  • Page 117: Chapter 6 Troubleshooting

    CONTENTS Chapter 6 TROUBLESHOOTING Board layouts ......................6-1 Overall boards layout (Rear view) ................6-1 Diagnostic ........................6-2 Engine diagnostics flow ....................6-3 Logic controller diagnostics flow ................. 6-6 General error handling ..................... 6-7 Panel indicator ......................6-7 Error messages ......................6-8 Memory card errors ....................
  • Page 118 F3: Controller system error ..................6-30 Other errors relating to the controller board .............. 6-31 Option harddisk errors ....................6-32 Print quality problems .................... 6-33 Completely blank printout ..................6-33 All-black printout ......................6-33 Dropouts ........................6-34 Black dots ........................6-35 Horizontal streaks .....................

  • Page 119: Board Layouts

    Board layouts Overall boards layout (Rear view) Symbol (above) Board No. Description KP-536 Main logic board KP-537 System ROM (Flash DIMM) KP-544 Engine board KP-564 Wiring liaison board (CON1) — Power supply...

  • Page 120: Diagnostic

    Diagnostic The printer automatically executes its self-diagnostic test when it is powered up. The sequence and the items to be diagnosed are explained below. When the printer locates the error with a specific item, it calls for operator’s attention by showing the appropriate Call service person message on the operator panel display.

  • Page 121: Engine Diagnostics Flow

    Engine diagnostics flow Power Engine ROM D0: Firmware program error checksum OK? Fuser heater A2: Fuser overheating temp. normal? Fuser heater A3: Fuser heater disconnection normal? Is fuser new? Fuser life fuse E8: Fuser unit life fuse error blown?
  • Page 122 Is developer new? Developer life fuse A4: Developer unit life-fuse error blown? Fuser thermistor E4: Fuser heater error normal? Polygon motor E2: Laser scanner motor error normal? Laser pin-photo E3: Laser beam detection error detects laser? Main motor normal? E1: Main motor error...
  • Page 123 Toner being fed? Toner motor normal? E9: Toner motor error Waste toner A1: Uninstalled waste toner conveyer normal? conveyer Fuser temp. rises E4: Fuser heater error in normal time? Engine ready...

  • Page 124: Logic Controller Diagnostics Flow

    Logic controller diagnostics flow Power on System ROM F1: System ROM error checksum OK? Communication established between E0: Communication error engine and main CPUs? System memory OK? F2: System memory error Controller is ready.

  • Page 125: General Error Handling

    General error handling This section provides how to handle general errors as indicated on the message display. Refer to the section starting on page for errors calling for service person assistance. Panel indicator The symbol mark on the front panel provides following user-handling errors. Proceed with Corrective actions indicated below.

  • Page 126: Error Messages

    Error messages The printer indicates on its front control panel various messages ranging from user- recoverable errors to call-service person errors. The instructions below indicate how to respond to all those problems indicated by the error messages. For call-service person errors, further reference to the descriptions including flowcharts may be required as instructed in Corrective action below.
  • Page 127 Message Corrective action Paper jam This message appears when the front cover is open during a ############## paper jam. Letters A through I and numbers 1 through 6 will appear in place of the #’s. For details on the meaning of the text displayed, see page Chapter 6-34.
  • Page 128 Message Corrective action Print overrun Current print processing cannot continue due to insufficient Press CONTINUE memory. The data transferred to the printer was too complex to print on a page. Check available user memory by printing a status page, and either remove unnecessary download fonts and/or macros or expand the printer’s memory.

  • Page 129: Memory Card Errors

    Message Corrective action I/F occupied The interface selected is currently being used. This message only appears if an optional interface is installed. The interface is secured while the interface name displayed in the message display is flashing even if the printer is in the ready state.
  • Page 130 Error Applicable code card type Meaning SRAM Memory card protect error. Release the write protection on the memory card when you write data to the memory card. SRAM Non format. Reformat the memory card using MODE SELECT (See the printer’s instruction handbook). SRAM Partition name error.

  • Page 131: Call-Service Person Errors

    Call-Service person errors The printer does not operate when a message beginning with Call service person (A, B, C, D, E, F) is displayed. The message is categorized by an alphanumeric code. Proceed with this section for taking a corrective action depending on the code. The Corrective action may be useful for on-site service.
  • Page 132 Waste toner Install conveyer. conveyer installed? Turn power off, then on. Remove conveyer. A1 shown? Replace conveyer and tower-guide assembly. Can sweep roller in toner container Replace with a new toner container. be manual rotated? Open waste toner outlet of drum and manipulate to turn.

  • Page 133: A2: Fuser Overheating

    A2: Fuser overheating Meaning Suggested causes Corrective action The fuser unit is • Defective photo-coupler (low Replace KP-544./Re- overheating. voltage) for heaters place the switching regulator./Check • Defective engine gate array U2 replace S02069 cable • Defective heater control circuit KP-544 and the switching (engine board) or heater tempera- regulator./Replace fuser.

  • Page 134: A3: Fuser Heater Disconnection

    A3: Fuser heater disconnection Meaning Suggested causes Corrective action Either or both heater • Blown-out heater lamp(s) Replace KP-544. Re- lamp(s) is blown out. place KP-564. Check/ • Defective connection between the replace S02054 cable. engine board and the low voltage Replace fuser unit.

  • Page 135: A4: Developer Unit Life-Fuse Error

    A4: Developer unit life-fuse error Meaning Suggested causes Corrective action • Defective engine gate array Try turning the printer off The life fuse won’t cut and on several times. in the developer unit. • Defective fuse cut circuit on the Replace developer unit.

  • Page 136: B1 - B6: Feed Cassette Bottom Plate Motor Error

    B1 – B6: Feed cassette bottom plate motor error Meaning Suggested causes Corrective action The feed cassette • Excessive torque on the motor Replace the motor. bottom plate motor (activating the current protection Check/replace S02088/ won’t revolve. circuit) S02089 cables. Try replacing with other •...

  • Page 137: C1: Duplex Communication Error

    C1: Duplex communication error Meaning Suggested causes Corrective action Communication error • Defective engine gate array (U6) Try reinstalling duplexer. between the duplexer Check/replace cable • Defective engine CPU (U1) and the printer. between printer and • Duplexer CPU (U1) malfunction duplexer.

  • Page 138: C5: Document Finisher Backup Ram Error

    C5: Document finisher backup RAM error Meaning Suggested causes Corrective action Backup RAM error in • Defective backup RAM Replace document the document finisher finisher. C6: Document finisher sensor error This error means any of the following sensors in the document finisher is defective: •...

  • Page 139: Cb: Document Finisher Tray Motor Error

    CB: Document finisher tray motor error Perform the same procedure as C8 for the document finisher’s tray motor except making check on connector J7. CC: Document finisher paper feed motor error Perform the same procedure as C8 for the document finisher’s feed motor except making check on connector J11.

  • Page 140: E0: Communication Failure

    E0: Communication failure Meaning Suggested causes Corrective action • Error with CPU and gate arrays of Check/replace S02051 The engine controller either the engine or main controller cable. Replace KP-544. does not respond to Replace KP-536. the main controller. • Connection error between the engine board and the main con- troller board •...

  • Page 141: E1: Main Motor Error

    E1: Main motor error Meaning Suggested causes Corrective action The main motor won’t • Error with CPU and gate arrays of Replace KP-544. Re- revolve, or will revolve either the engine or main controller place main motor. Check/ too slow. replace S02056 cable.
  • Page 142 Turn power on and off. Does motor rotate 5 seconds or more? Can main motor be manipulated to turn? Locate the unit preventing the motor to rotate. Replace motor. If not recovered, replace S02056 cable between Replace the unit. motor and KP-544. If not recovered KP-544.

  • Page 143: E2: Laser Scanner Motor Error

    E2: Laser scanner motor error Meaning Suggested causes Corrective action The revolution of the • Defective scanner motor (e.g., at Check/replace cables. polygon motor does its axle holder) Replace KP-544. Replace not reach the prede- KP-564. Replace KP-570. • Connection error between polygon termined revolution.
  • Page 144 Connect ckt tester to pin 3 of KP-564/YC3. Turn power off, then on. Connect ckt tester to Is pin 3 low? Turn power off, then on. pin 45 of KP-544/U2. Connect ckt tester to pin 10 of KP-564/YC3. Is pin 3 low? Replace KP-544.

  • Page 145: E4: Fuser Heater Error

    E4: Fuser heater error Meaning Suggested causes Corrective action The fuser heater does • Connection error between the Replace KP-544. Re- not turn on. [E4 is indi- engine board and the fuser unit place fuser (temp. cated immediately adjustment is required.) •...

  • Page 146: E5: Eraser Error

    E5: Eraser error Meaning Suggested causes Corrective action The eraser does not • Connector error between CON1 Replace KP-544. Replace turn on. board and the drum liaison board KP-564. Replace drum unit. Check/replace • Defective connector between the S02070 cable. drum liaison board and the drum board •...

  • Page 147: E8: Fuser Unit Life Fuse Error

    E8: Fuser unit life fuse error Meaning Suggested causes Corrective action The fuser unit life fuse • Defective gate array U6 Turn printer power off and won’t blow out. off several times. Re- • Defective fuse cut circuit on the place fuser unit.

  • Page 148: F0: Controller System Lock Error

    F0: Controller system lock error Meaning Suggested causes Corrective action Main controller can not Connection error between main Replace KP-536 (main communicate with controller board and engine con- cont.). Check/replace control panel [shown troller board, engine board and S02051. Replace KP-544 approx.

  • Page 149: Other Errors Relating To The Controller Board

    Other errors relating to the controller board Symptom Suggested causes Corrective action Display freezes while A situation in which OS is not Turn power on and off. Or, indicating Processing. able to run is occurred. replace the main controller board. Printed characters Wrong printer driver is used.

  • Page 150: Option Harddisk Errors

    Option harddisk errors The printer indicates Harddisk error messages on the message display when it detects errors with the option harddisk (if installed). This message is followed by a two-digit code which provides the following meaning and corrective action to the specific error. To clear the error message and continue operating the printer, press the CONTINUE key.

  • Page 151: Print Quality Problems

    Print quality problems Print quality problems range from uneven tone to completely blank output. The troubleshooting procedure for each type of problem is given below. Completely blank printout Check the developer unit. • Check that the developer unit is inserted correctly •...

  • Page 152: Dropouts

    Dropouts Note the spacing of the • If the defects occur at regular intervals of 63 mm, the defects. Use the Repetitive problem may be a dirty transfer roller. Clean or replace defect gauge on page 6-39. the transfer roller. •...

  • Page 153: Black Dots

    Black dots Note the spacing of the • If the defects occur at regular intervals of 94 mm, the defects. Use the Repetitive problem may be a damaged drum unit or fuser roller. defects gauge on page 6-39. Replace the drum unit or fuser unit accordingly. •...

  • Page 154: Unsharp Printing

    Unsharp printing Check contamination on • Clean the main charger wire by pulling the green color the main charger wire and main charger wire cleaner know in and out several the grid. times. Check paper for property. • Paper with rugged surface or dump tends to cause this type of failure.

  • Page 155: Gray Background

    Gray background Check contamination on the • Clean the main charger wire by pulling the green color main charger wire and the grid. main charger wire cleaner know in and out several times. Check the grid plate (the • The grid plate must be flat and fit horizontally in place. mesh metal bottom part of Replace the main charger unit if necessary.

  • Page 156: Dirt On The Top Edge Or Back Of The Paper

    Dirt on the top edge or back of the paper Check toner contamination in • Dirty edges and back of the paper can be caused by various parts. toner accumulated on such parts as the paper chute, paper transportation paths, the bottom of the developer unit, and the fuser inlet.

  • Page 157: Repetitive Defects Gauge

    Repetitive defects gauge Use the following measurements for checking repetitive occurrences on the printed page. See the above section for details. FIRST OCCURRENCE OF DEFECT 32 mm: DEVELOPING ROLLER 37.5 mm: UPPER REGISTRATION ROLLER 50 mm: LOWER REGISTRATION ROLLER 66 mm: TRANSFER ROLLER/ DEVELOPING PULLEY 94.3 mm: FUSER PRESSURE...

  • Page 158: Drum Cleaning

    Drum cleaning This mode is meant to provide a manual means of drum cleaning in addition to the regular cleaning procedure made automatically in a photographic cycle. In this mode, the drum turns for the period of approximately three minutes with no main charging dispersed over the drum.

  • Page 159: Correcting A Paper Jam

    Correcting a paper jam This section describes how to remove paper when it jams in the printer. The printer will stop whenever paper jams in the printer or paper is not fed from a cassette. The printer will go offline and the message Paper jam Open front cover will appear in the message display.

  • Page 160: Locating And Correcting Paper Jams

    Locating and correcting paper jams MESSAGE DISPLAY INDICATOR AND PAPER JAM LOCATION Ind. Meaning of Indicator Corresponding Printer Location Optional paper feeder (Envelope feeder or Universal feeder) Multi-purpose tray Paper feeder included with printer Optional paper feeder Optional paper feeder Optional paper stacker (Document finisher or Bulk paper stacker)

  • Page 161: Correcting Paper Jams

    Correcting paper jams Warning: Pull out the paper feed unit (See below.) and wait a while to allow the fuser unit to cool. Do not touch the fuser unit as this may result in a burn injury. Fuser unit Warning: Take care not to leave any small pieces of paper in the printer when removing paper jams as this may result in fire.
  • Page 162 Ind. Meaning of indicator Corresponding printer location Check the optional paper feeder When a paper jam occurs in the optional (Envelope feeder or Universal feeder, pull it out carefully. (For details, feeder). read the instruction handbook for each separate option.) Check the multi-purpose tray.
  • Page 163 Example: Understanding the paper jam indication In the example below, paper is jammed in the paper feeder (C), the upper cassette (1), and the paper feed unit (H). Paper jam C, H, 1 1. When paper jams in multiple locations such as in this example, begin taking corrective action from the location displayed at left.

  • Page 164: Paper Jam Removal Diagrams

    Paper jam removal diagrams These diagrams are for assistance in following instructions on page Chapter 6-41. DIAGRAM 1: PAPER FEEDER 6-46...
  • Page 165 DIAGRAM 2: FACE-UP STACK Step 1 Step 2 6-47...
  • Page 166 Step 3 6-48...
  • Page 167 DIAGRAM 3: TRANSFER UNIT Step 1 Step 2 6-49...
  • Page 168 DIAGRAM 4: FUSER UNIT 6-50...
  • Page 169 6-51...

  • Page 170: Appendix A Printer Interface

    CONTENTS Appendix A PRINTER INTERFACE Parallel interface ....................... A-1 Port pin assignment ....................A-1 Parallel interface connection ..................A-2 Serial interface ......................A-3 Serial interface specifications ..................A-3 Data error information (S nn ) ..................A-4 Changing the serial interface configuraion ..............A-4 Serial port pin assignment ...................

  • Page 171: Parallel Interface

    Parallel interface The printer uses a bi-directional parallel interface for high-speed data transmission for the host computer. This interface includes the buffers which are compatible with the IEEE 1284 standards. The parallel interface provides support for the ECP and nibble modes in this standards.

  • Page 172: Parallel Interface Connection

    Parallel interface connection Detailed descriptions of the parallel interface signals follow. Signal Meaning Strobe* [nStrobe] (Pin 1) A negative-going Strobe* pulse causes the printer to read and latch the data on the Data 0 [1] to Data 7 [8] signal lines. Data 0 [1] to Data 7 [8] These eight signals form the data byte sent from the host (Pins 2 to 9)

  • Page 173: Serial Interface

    Serial interface The printer is equipped with a serial port whose circuitry duplicates the option interface card. The device responsible for controlling the serial interface is integrated in the gate array in the controller system. The serial interface supports both protocols of RS-232C and RS-422A. In the RS-232C protocol, CTS and DSR signals are included to support SNMP (Simple Network Management Protocol) protocol (used typically for Windows 95’s plug-and-play function).

  • Page 174: Data Error Information (S Nn

    Data error information (S nn ) A data error occurred on the serial interface is indicated on the service status page. The Snn code in the same row as Service information on the status page shows various error conditions as follows: S code Meaning No error...
  • Page 175 To change the serial protocol from RS-232C to RS-422A, for example, carefully remove the jumper connector from the main circuit board, and reconnect to the pin position shown in the diagram. RS-422A position RS-232C position After finishing the above procedure, replace the rear panel cover back by referring the diagram above into the printer.

  • Page 176: Serial Port Pin Assignment

    Serial port pin assignment The pins of the parallel interface connector carry the signals listed below. The RS-422A specific signals are noted in the Definition . Signal Flow Definition — Frame ground Printer → host Transmit data: RS-232C Host → Printer RxD/RDA Receive data/receive data (Reversed) Printer →...

  • Page 177: Serial Interface Connection

    Serial interface connection Detailed descriptions of the serial interface signals follow. Signal Meaning FG (Pin 1) This pin is connected directly to the printer frame. TxD (Pin 2) RS-232C only: This output carries asynchronous data sent by the printer to the computer. It is used mainly in handshaking protocols.

  • Page 178: Connector Configurations

    Connector configurations The printer uses a DB-25 connector for the serial interface. Depending on the computer configuration for serial interface, use either of the appropriate configurations. A special cable must be prepared or obtained for the RS-422A configuration by referring to the diagram (last) below.

  • Page 179: Rs-232C Protocol

    RS-422A Computer Printer serial serial port interface (DB-25) Frame gr. 1-FG 3-RD- Signal gr. 7-SF 9-SD- Rx term. 10-SD+ Tx term. 18-RD+ On the computer serial port, investigate pin assignments depending on the computer manufacturer’s instruction. Since the RS-422A configuration does not employ control lines except for data transmission/reception, select a mode in which signals such as DTR are not used.

  • Page 180: Status Page

    Status page The printer can print different types of the status page—the user status page and the service status page. This section exclusively describes the service status page. For information on the user status page, refer to the printer’s instruction handbook . Information obtainable on the service page include various settings for the printer, service statistics, etc.
  • Page 181 Example of the service status page PAGE PRINTER STATUS PAGE Software version: Released: dd/month/yyyy Service information [A2/48-03][07] /P00/S00/F01/E01/N02/D10:DM0301.DAN Total page 3464 /0078/0033/1061/0811/AAAAAEI/AAAAAAA/AAAEJDJ/ DN:SPL7400084/AAEJIJ/AAEFBE/AAEFBE/AA/DF/RS2 SN:SPL6500004 “/” is the separator. Most of these service information on the status page are alphannumerically-coded. Each item is explained below.
  • Page 182 Service information on the service status page Example Meaning Description Top of the page Software version: Controller firmware version* Released: Rreeased date of the dd/ month /yyyy firmware (above) Bottom of the page, Upper line [A2/48-03] Engine ROM version/flush ROM version-product ID [07] Front panel ROM mask version /P00...
  • Page 183 Example Meaning Description Bottom of page, lower line /DN:SPL6X40262 Serial number for the drum unit Internal use Internal use /RS2 Serial interface mode RS2=RS-232C, RS4=RS-422A SN:SPL6500004 Serial number for the printer —...
  • Page 184 General wiring diagram Laser Di TOWER* ERASED* APC-B PWB HTLD* EESCLK Poligon (KP-579) N.C. FPDIRo SCLKI Motor Inter Lock N.C. FPCLKo Left FDFUL FUP/FDW DRUNIT* PDI* Cover Photo JAMFUP* FPDT Solenoid (KP-556) +24V2 Photo Photo Sensor HT2 (S) SCAN* SCANCK S02061 +24V2 Sensor...
  • Page 185 MITA COPYSTAR MEXICO, S.A. DE C.V. Av. 16 de Septiembre #407 Col. Santa Inés, Delegación Azcapotzalco México, D.F. C.P. 02130 TEL : 3-83-27-41 FAX : 3-83-78-04 ©1997 MITA INDUSTRIAL CO., LTD. MITA and are registered trademarks of MITA INDUSTRIAL CO., LTD. Printed in U.S.A.
  • Page 186 1-1-22...
  • Page 187 CONTENTS Appendix B STATUS PAGE Status page ........................ B-1 Service information on the status page ................ B-1 Example of the service status page ................B-2 Service information on the service status page ............B-3 1-1-23...
  • Page 188 FOR HOME OR OFFICE USE REQUIREMENTS OF FEDERAL REGULATIONS 21 CFR CHAPTER 1, SUBCHAPTER J. MITA INDUSTRIAL CO.,LTD. 2 - 28 1 - CHOME TAMATSUKURI CHUO-KU OSAKA JAPAN MADE IN JAPAN This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
  • Page 189 Printer Specifications Engine Specification Print method ……………………… Electrophotography laser scan Print speed (when printing multiple copies of the same page) ……………………… A4/11" × 8 ": 28 pages/min., B4 (257 × 364 mm): 18 pages/min., A3/11" × 17": 16 pages/min. Resolution (dpi) ………………… 600 horizontal/600 vertical Smoothing …………………………...
  • Page 190 Weight and dimensions Specification Main unit ………………………… Width: 56 cm (22") Height: 34.5 cm (13.6") Depth: 56.6 cm (22.3") Weight: 41.5 kg (18.7 lb.) Paper feeder ……………………… Width: 56 cm (22") Height: 24.7 cm (9.7") Depth: 56.6 cm (22.3") Weight: 19.5 kg (8.8 lb.) Power requirements Specification Voltage requirements ……………...
  • Page 191 Recommended flash cards The printer provide support for a JEIDA/PCMCIA category of memory card in both SRAM and flush types of up to 32 MB. Following is a list of makes and models of flush cards recommended for use with the printers. Note that the flush card to be used should be operable on 5 V DC.
  • Page 192 Front and rear views Front view Paper-full sensor Vent Option feeder connector MP (multi- Front control panel purpose) tray Front cover Upper paper cassette Paper feeder side cover Lower paper cassette Paper feeder Left side view Face-down tray Power switch Left side cover Face-up paper tray...
  • Page 193 Internal assemblies Toner container release lever (Green colored) Toner container Drum unit Drum release lever (Green colored) Fuser unit Fuser release lever Developer release lever Feed unit handle Developer Feed unit Rear view Harddisk drive slot Memory card slot Power receptacle Parallel interface Rear panel connector...
  • Page 194 Options The example option units are shown below. The instruction handbook come with the printer has more information regarding the accessories available for this model. Inboard duplexer Paper feeder supplied as standard Bulk paper First optional stacker paper feeder Second optional paper feeder Wheels (Caster kit)
  • Page 195 Environmental requirements Environmental conditions The Environmental requirements section on page Chapter 1-2 should be observed to ensure the optimum operation of the printer. The use of the printer in a location which does not satisfy the requirements may result in troubles and risk shortening its service life. The printer will work best if it is installed in a location that is: •...
  • Page 196 Clearance Allow the necessary minimum clearance on all sides of the printer (below). A total space of 92 by 138 cm (36 by 54") is needed. Clearance Dimensions Left 1 45 cm (17.7"), or 30 cm (12") if the face-up tray is not used. Front 2 60 cm (24") Right 3...
  • Page 197 Places to avoid Avoid installing the printer in locations exposed to: • Direct drafts of hot or cold air. • Direct drafts of outside air. (Avoid locations next to outside doors.) • Sudden temperature or humidity changes. • Any source of high heat, such as a radiator or stove. •...
  • Page 198 About the toner The printer should use the proprietary toner kit. To ensure the high print quality and long service life, the following handling precautions should apply. Caution: As the printers are designed to ensure the optimum print quality when used with the proprietary toner, we do not recommend to use any refilled toner containers that may be available commercially.
  • Page 199 Toner storage The toner contained in the container is susceptible to temperature and humidity. To ensure the high print quality, store the toner container in a place that satisfy the following environmental conditions: Temperature: –20 to 40°C (–4 to 104°F) Humidity: 15 to 90% RH Note: If the toner container is removed from the printer’s developer unit, put it in a...

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