Oki OKIPAGE 4M Maintenance Manual
  1. Manuals
  2. Brands
  3. Oki Manuals
  4. Printer
  5. OKIPAGE 4M
  6. Maintenance manual
Oki OKIPAGE 4M Maintenance Manual

Oki OKIPAGE 4M Maintenance Manual

Led page printer
Hide thumbs Also See for OKIPAGE 4M:
Table of Contents

Advertisement

Quick Links

Download this manual
OKIPAGE 4
/4
LED Page Printer

Maintenance Manual

OEL/INT
Approval
All specifications are subject to change without notice.
40245101TH

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the OKIPAGE 4M and is the answer not in the manual?

Questions and answers

Related Manuals for Oki OKIPAGE 4M

Summary of Contents for Oki OKIPAGE 4M

  • Page 1: Maintenance Manual

    OKIPAGE 4 LED Page Printer Maintenance Manual OEL/INT Approval All specifications are subject to change without notice. 40245101TH...
  • Page 2 HP, LaserJet and PCL5e are trademarks of Hewlett-Packard Co.
  • Page 3 PREFACE This Maintenance Manual describes the field maintenance methods for LED Page Printers. This manual is written for use by service persons. Please note that you should refer to the Printer Handbook for the handling and operating methods of the equipment.

  • Page 4: Table Of Contents

    CONTENTS 1. CONFIGURATION ..................1 - 1 1.1 System Configuration ................ 1 - 1 1.2. Printer Configuration ................1 - 2 1.3 Option ....................1 - 3 1.4 Specification ..................1 - 4 1.5 Safety Standards ................1 - 6 1.5.1 Certification Label ..................
  • Page 5 4. ADJUSTMENT ................... 4 - 1 4.1 Adjustment Types and Functions ............4 - 1 4.1.1 Printer Driver ................... 4 - 1 4.1.2 Engine Maintenance Utility ..............4 - 3 4.2 Adjustment When Replacing a Part ........... 4 - 3 4.2.1 Setting LED Head Drive Time ..............

  • Page 6: Configuration

    1. CONFIGURATION...

  • Page 7: System Configuration

    CONFIGURATION System Configuration The OKIPAGE 4w Plus/4m consists of a control block, a power supply unit, and an engine block. (See Figure 1-1.) ENGINE UNIT Paper Feed Mechanism Hopper Plate Electro-photographic Processor    High-Voltage Power Supply Board Main Control Board Power Supply Unit *2MB Memory Expansion Board...

  • Page 8: Printer Configuration

    Printer Configuration The printer unit consists of the following five hardware components: • Electro-Photographic Processor • Paper Feeder • Main Control Board • High-Voltage Power Supply Board • Power Supply Unit Figure 1-2 is the configuration of the printer unit. Upper Cover Assy EP Unit Top Cover Assy...

  • Page 9: Option

    Option (1) 2MB HBRB-PCB Option Memory Board(Only OKIpage 4m) 1 - 3...

  • Page 10: Specification

    Specification (1) Type Desktop (2) Outside dimensions Height 5.9” (150 mm) (excludes protruding Width 12.2” (310 mm) portion) Depth 7.5” (191 mm) (3) Weight 3.8 kg (4) Development method Dry non-magnetic development system Exposure method LED stationary head (5) Paper used <Type>...
  • Page 11 (12) Temperature and humidity Temperature Humidity During operation 10 to 32 ˚C 20 to 80% RH (relative humidity) In storage –10 to +43 ˚C 10 to 90% RH (relative humidity) No condensation is permissible. Caution: Temperature and humidity in storage are measured with the OKIPAGE 4w plus/4m being packed;...

  • Page 12: Safety Standards

    Warning Label Warning labels are affixed to the locations that may cause bodily injury. During maintenance, do work with enough care while following instructions on these warning labels. For OEL For OEL, OKI-INT For Korea For China, TAIWAN 1 - 6...

  • Page 13: Operation Description

    OPERATION DESCRIPTION...
  • Page 14 OPERATION DESCRIPTION The OKIPAGE 4w Plus/4m consists of a main control board, a high-voltage power supply board, a power supply unit, and an electro-photographic processor. The OKIPAGE 4w Plus/4m receives print data from a higher-level interface and sequentially stores it in memory. The OKIPAGE 4w Plus/4m decodes and edits the received data while storing print data from the interface in memory.
  • Page 15 2 - 2...
  • Page 16 Driver IC 2 - 3...

  • Page 17: Main Control Board

    Main Control Board The main control board consists of a one-chip CPU, a program ROM, a DRAM, an EEPROM, a host interface circuit, and a mechanism driving circuit. The mechanism driving circuit consists of a LED head, a main motor, and an electromagnetic clutch. (1) One-chip CPU The one-chip CPU is a custom CPU (8-bit internal bus, 8-bit external bus, 10-MHz clock) incorporating mask ROM and CPU peripheral devices.

  • Page 18: Power Supply Unit

    Power Supply Unit The power supply unit supplies +5 V and +24 V to the main control board according to 230 VAC /120 VAC. Output voltage Application +5 V Used to generate a logic circuit and a high voltage. +24 V Used to drive the motor and electromagnetic clutch.
  • Page 19 (2) Sensors The high-voltage power supply board consists of the high-voltage power supply circuit that supplies power to the electro-photographic processor system and the photosensor that detects a paper feeding system and toners. Figure 2-2 shows the sensor layout drawing. Exit roller Outlet sensor Heat roller...

  • Page 20: Electro-Photographic Processor

    Electro-Photographic Processor The electro-photographic processor prints out the image data to be sent from the main control board on sheets of paper. Figure 2-3 shows the layout drawing of the electro-photographic processor. (1) Image drum unit The image drum unit makes a toner adhere to the formed electrostatic latent image with static electricity.
  • Page 21 2 - 8...
  • Page 22 (3) Pulse motor (Main) This pulse motor of 48 steps/rotation is two-phase excited by the signal from the main control board; it performs feeding control by switching normal rotation to reverse rotation or vice versa and turning on/off the electromagnetic clutch. The relationship between the main motor, electromagnetic clutch, resist gear, drum gear, hopping roller is shown in the table below and on the subsequent pages.
  • Page 23 2 - 10...

  • Page 24: Electro-Photographic Process

    Electro-Photographic Process (1) Electro-photographic process The electro-photographic process is outlined below. 1 Charging The surface of the OPC drum is charged negatively and uniformly by applying the DC voltage to the CH roller. 2 Exposure Light emitted from the LED head irradiates the negatively charged surface of the OPC drum.
  • Page 25 2 - 12...

  • Page 26: Explanation Of Each Process Operation

    2.5.1 Explanation of Each Process Operation (1) Hopping As shown in the figure below, the clutch for hopping is turned on/off according to current ON/ OFF to a coil. When the clutch is OFF Spring for resetting Hopping gear Clutch plate Coil Magnetic substance plate...
  • Page 27 (2) Printing and warm-up At warm-up Triple gear Transfer gear Resist gear Idle gear Planetary gear a" Hopping gear Gear A Pulse motor (main) Rotate the pulse motor (main) in the a direction. The planetary gear rotates in the a’ direction, dislocating its position in the a”...
  • Page 28 (3) Charging Charging is performed by applying DC voltage to the charge roller that is in contact with the surface of the OPC drum. High- voltage power Charge roller supply OPC drum (4) Exposure Light emitted from the LED head irradiates the negatively charged surface of the OPC drum. The surface potential of the irradiated surface attenuates to form the electrostatic latent image corresponding to the image signal.
  • Page 29 (5) Development The electrostatic latent image on the surface of the OPC drum is changed to a visible toner image by applying a toner to it. Development is performed in the contact part between the OPC drum and developing roller. 1 The sponge roller negatively charges a toner and applies it to the developing roller.
  • Page 30 (6) Transfer The transfer roller is composed of conductive sponge material. This roller is set so that the surface of the OPC drum and sheets of paper will adhere closely. A sheet of paper is placed on the surface of the OPC drum and the positive charge opposite to the negative charge of a toner is applied from the reverse side by the transfer roller.
  • Page 31 (7) Fusing The transferred unfused toner image is fused to a sheet of paper because heat and pressure are applied when it passes between the heat roller and back-up roller. The Teflon-coated heat roller contains a 400 W heater (Halogen lamp) that heats the heat roller.

  • Page 32: Paper Jam Detection

    Paper Jam Detection The OKIPAGE 4w Plus/4m monitors the paper status when the power supply is on and during printing. In the following cases, the OKIPAGE 4w Plus/4m interrupts the printing process as a paper jam. Printing can be recovered by opening the cover, removing the jammed paper, and closing the cover.
  • Page 33 Normal rotation Pulse motor (main) Reverse rotation Electromagnetic clutch Manual feed sensor Paper sensor Outlet sensor Warm-up Paper feed Printing Operation mode Timing Chart for Paper Feed (Tray Feed) 2 - 20...

  • Page 34: Toner Low Detection

    Paper Feed Check List Toner Low Detection • Hardware configuration of toner sensor The figure below shows the hardware configuration of the toner sensor. Image drum unit Agitation bar (iron) Magnet Toner sensor lever Photointerrupter Hardware Configuration of Toner Sensor •...

  • Page 35: Cover Open

    (2) The basic rotation cycle of the toner sensor is as follows: T time Basic rotation cycle of toner sensor 4.9 sec. Toner low time t1 > 1.2 sec. Toner full time 1.2 sec. > t1 > 0.28 sec. Cover Open Opening the stacker cover turns off the microswitch on the high-voltage power supply board to suspend +5 V supply to the high voltage power supply.

  • Page 36: Parts Replacement

    PARTS REPLACEMENT...

  • Page 37: Precautions For Parts Replacement

    PARTS REPLACEMENT This chapter explains how to replace parts, assemblies, and units in the field. The replacement procedures to be explained here include dismounting, not mounting. When mounting parts, assemblies, and units, reverse the dismounting steps. Precautions for Parts Replacement (1) Be sure to dismount the AC cord and interface cable before replacing parts.
  • Page 38 [Maintenance Tools] Table 3-1 lists the maintenance tools necessary for parts replacement. Table 3-1 Maintenance Tools Maintenance Tools Q'ty Remarks No. 1-100 Philips 2~2.5 mm screw screwdriver No. 2-100 Philips 3~5 mm screw screwdriver No. 3-100 Philips screwdriver No. 5-200 screwdriver Digital multimeter (tester) Pliers Handy cleaner...

  • Page 39: Parts Layout

    Parts Layout This section explains the layout of main parts. [Upper Cover Assy] Spur gear (A) Guide slide (R) Guide slide (L) Hopper plate Upper cover Figure 3-1 3 - 3...

  • Page 40: Base Frame Unit

    [Base Frame Unit] Flat cable assy LED head Head spring Top cover assy Pressure roller (B) (Back up roller) Paper guide (R) Heat assy Transfer roller Paper guide (L) Resistration roller Idle gear heat Hopper spring Paper holder Drive shaft E (eject) Tension plate Slide plate M...

  • Page 41: Base Plate Unit

    [Base Plate Unit] Power supply unit Main control board Base plate assy Figure 3-3 3 - 5...

  • Page 42: Replacing Parts

    Replacing Parts This section explains how to replace parts and assemblies. 3.3.1 Hopper Plate (1) Remove two claws and dismount hopper plate 1. 3 - 6...

  • Page 43: Led Head And Head Spring

    3.3.2 LED Head and Head Spring (1) Open top cover assy 1. (2) Dismount the left clamp and LED head 2. Then, dismount flat cable assy 3. (3) Dismount two head springs 4. 3 - 7...

  • Page 44: Transfer Roller

    3.3.3 Transfer Roller (1) Open top cover assy 1 and dismount EP unit 2. (2) Remove the right claw. Then, dismount transfer roller 3, two resist bearings 4, and gear Label 3 - 8...

  • Page 45: Upper Cover Assy

    3.3.4 Upper Cover Assy (1) Turn off the power switch and unplug the AC cord from the AC socket. (2) Disconnect interface cable 1. (3) Open top cover assy 2 and dismount EP unit 3. (4) Move paper guide (L) 4 and paper guide (R) 5 on the rear of the printer to the center. (5) Remove two front claws of upper cover assy 6 and two rear screws A and lift upper cover assy 6.

  • Page 46: High-Voltage Power Supply Board

    3.3.5 High-Voltage Power Supply Board (1) Dismount upper cover assy. (See Section 3.3.4.) (2) Remove three screws 1 and draw out high-voltage power supply board 2. (3) Disconnect all the cables 3 from high-voltage power supply board 2 and dismount high- voltage power supply board 2.

  • Page 47: Top Cover Assy And Flat Cable Assy

    3.3.6 Top Cover Assy and Flat Cable Assy (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount the LED head. (See Section 3.3.2.) (3) Press the left clamp outward and dismount the engagement and top cover assy 1. (Tension spring 2 also comes off at the same time.) (4) Disconnect connector CN6 and dismount flat cable assy 3.

  • Page 48: Paper Holder

    3.3.7 Paper Holder (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount paper holder 1. (3) Unlock and dismount paper guide (L) 2 and paper guide (R) 3. (4) Remove the claw and dismount hopper spring 4. (5) Remove the claw and dismount stopper spring 5. 3 - 12...

  • Page 49: Side Plate M And Idle Gear

    3.3.8 Side Plate M and Idle Gear Perform parts replacement while making the base frame assy stand so that side plate M will face upward. (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Remove two screws 1 and two claws, then dismount plate side M2. (3) Dismount earth plate 3, two idle gears P4, idle gear M5, idle gear 3R6, idle gear 2R7, and idle gear heat 8.

  • Page 50: Heat Assy

    3.3.9 Heat Assy This section explains how to dismount the heat assy and parts in the assy. <Dismounting the heat assy> (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount the high-voltage power supply board. (See Section 3.3.5.) (3) Remove two screws 1, disconnect connector 2, and dismount heat assy 3.
  • Page 51 3 - 15...
  • Page 52 Voltage display side 3 - 16...

  • Page 53: 3.3.10 Drive Shaft E (Eject) And Eject Roller

    3.3.10 Drive Shaft E (Eject) and Eject Roller (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount top cover assy. (See Section 3.3.6.) (3) Remove two screws 1 from heat assy (Section 3.3.9), lift the heat assy, and dismount idle gear E (A) 2 and idle gear E (B) 3.

  • Page 54: Pressure Roller B (Back Up Roller)

    3.3.11 Pressure Roller B (Back Up Roller) (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount the high-voltage power supply board. (See Section 3.3.5.) (3) Dismount the heat assy. (See Section 3.3.9.) (4) Dismount the engagement with the left ground, then pressure roller B1. (Two bearing BUs 2 and two bias springs 3 also come off at the same time.) 3 - 18...

  • Page 55: 3.3.12 Separator Guide

    3.3.12 Separator Guide (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount the high-voltage power supply board. (See Section 3.3.5.) (3) Remove four screws 1. (4) Dismount inlet 2 from base frame 3. <Dismounting inlet 2> Insert a screwdriver into the hole on the side of base frame 3, remove the inlet claw from base frame 8, and dismount inlet 2.
  • Page 56 <Dismounting Inlet> Screw driver <Disconnecting Connector> (–) Screw driver Clamp lever 3 - 20...

  • Page 57: Pulse Motor (Main)

    3.3.13 Pulse Motor (Main) (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount the high-voltage power supply board. (See Section 3.3.5.) (3) Dismount side plate M. (See Section 3.3.8.) (4) Dismount the base frame. (See Section 3.3.12.) (5) Remove two screws 1 and dismount pulse motor (main) 2. 3 - 21...

  • Page 58: 3.3.14 Hopping Shaft Assy

    3.3.14 Hopping Shaft Assy (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount the high-voltage power supply board. (See Section 3.3.5.) (3) Dismount the base frame. (See Section 3.3.12.) (4) Dismount the paper holder assy. (See Section 3.3.7.) (5) Dismount the sheet guide.

  • Page 59: 3.3.15 Resist Roller

    3.3.15 Resist Roller (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount Idle gear R 3 and Gear R 4. (3) Move resist roller 1 to the right and dismount it by lifting. (Two resist bearings 2 also come off at the same time.

  • Page 60: 3.3.16 Paper Sensor E, Paper Sensor Exit And Toner Sensor Assy

    3.3.16 Paper Sensor E, Paper Sensor Exit and Toner Sensor Assy (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount the high-voltage power supply board. (See Section 3.3.5.) (3) Dismount the base frame. (See Section 3.3.12.) (4) Dismount the paper holder assy. (See Section 3.3.7.) (5) Dismount the sheet guide.

  • Page 61: 3.3.17 Base Plate

    3.3.17 Base Plate (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount the base frame. (See Section 3.3.12.) (3) Remove two screws 1, disconnect connector 2, and dismount power supply unit 3. (4) Dismount insulation sheet 4. (5) Remove two screws 5 and dismount main control board 6 from base plate 7. 3 - 25...

  • Page 62: Adjustment

    ADJUSTMENT...

  • Page 63: Adjustment Types And Functions

    ADJUSTMENT This chapter explains adjustment necessary when a part is replaced. This adjustment is made by changing the parameters values set in EEPROM on the main control board. The printer driver or maintenance utility can be used to change these values. Only servicemen and maintenance personnel can use the maintenance utility.
  • Page 64 (For Macintosh) <only OKIPAGE4m> (1) Drum counter reset This function resets the life of the drum counter when the EP unit is replaced. Clicking the “Reset” button resets the life. (2) Charge roller cleaning This function cleans the charge roller of the EP unit; it is used when printing is unclear. For details on how to operate this function, refer to “User’s Manual.”...

  • Page 65: Engine Maintenance Utility

    4.1.2 Engine Maintenance Utility See Appendix D. Adjustment When Replacing a Part The table below lists the parts that requires adjustment when they are replaced. Part to be Replaced Adjustment Set the LED head drive time. LED head Set the LED head dot count. EP unit Reset the drum counter.

  • Page 66: Setting The Led Head Dot Count

    4.2.2 Setting the LED Head Dot Count There are two types of LED head dot count. Use the following label to identify these types. Use “LED Head Width” in the engine menu table to set the LED head dot count. (See Figure 4-2.) •...

  • Page 67: Uploading And Downloading Eeprom Data

    4.2.3 Uploading and Downloading EEPROM Data When the main control board is replaced, EEPROM data must be reflected on a new main control board. Use “EEPROM Operations” in the option tab of the maintenance utility to reflect EEPROM data on the new main control board. (See Figure 4-4.) Reflect EEPROM data on the new main control board in the following procedures: (1) Check that the printer and PC are connected by the parallel I/F, then execute the maintenance utility.

  • Page 68: Periodical Maintenance

    PERIODICAL MAINTENANCE...

  • Page 69: Periodical Replacement Parts

    PERIODICAL MAINTENANCE Periodical Replacement Parts Table 5-1 lists the part and unit to be replaced periodically. Table 5-1 Routine Replacement Parts Part to be Checked Part Name Replacement Time Remarks Simultaneously Toner cartridge When "Toner Low" is displayed. LED head Consumables EP unit When "Change Drum"...
  • Page 70 (1) Set the LED head cleaner in the LED lens array, as shown in the figure below, and slide the cleaner left and right several time to clean the head. Caution: Do not press the LED head cleaner against the LED lens array. LED lens array LED head cleaner Figure 5-2...

  • Page 71: Troubleshooting Procedures

    TROUBLESHOOTING PROCEDURES...

  • Page 72: Troubleshooting Tips

    TROUBLESHOOTING PROCEDURES Troubleshooting Tips (1) Check the basic check points written in the user’s manual. (2) Gather detailed failure information as much as possible from the customer. (3) Check the printer under the condition close to that under which the failure occurred. Check Points Before Correcting Image Problems (1) Is the printer running in proper ambient conditions? (2) Are consumables (toner and EP unit) replaced correctly?

  • Page 73: Troubleshooting

    Troubleshooting If a trouble occurs in the OKIPAGE 4w Plus/4m, troubleshoot according to the following procedures: Trouble Perform detailed Troubleshoot according to Trouble indicated by troubleshooting according "Status Monitor Message List" the message displayed to the troubleshooting flow. (See Section 6.5.1.) on the status monitor.
  • Page 74 Table 6-1 Status Category Status Message Display Content Remedy Code Normal status Warming Up 18 00 Warming-up status Normal operation 00 10 Online (ready) status Online (Ready) Normal operation Power Save Mode 00 20 Power save status Normal operation 10 00 The toner amount of the toner cartridge is small.
  • Page 75 Table 6-1 (Cont'd) Status Category Status Message Display Content Remedy Code Paper size error Paper Size Error 30 00 Paper of improper size was fed. Check the paper. Also check whether more than one sheet of 2.52" (64 mm) L 15.77" (400.56 mm) paper were fed simultaneously.
  • Page 76 Table 6-1 (Cont'd) Status Status Category Category Status Message Status Message Display Content Display Content Remedy Remedy Code Code Device configuration error EEPROM Check Error 60 40 An error occurred during EEPROM check. Replace the main control board. (When replacing the main control board, also adjust EEPROM data.) (See Section 4.2.4.) Option RAM Check Error...

  • Page 77: Status Message Troubleshooting

    6.5.2 Status Message Troubleshooting Some failures cannot be corrected according to the status message trouble list. Troubleshoot these failures according to the following troubleshooting flowcharts: Flowchart No. Item The OKIPAGE 4w Plus/4m malfunctions after the power supply has been turned on. Jam error Paper input jam Paper feed jam...

  • Page 78: The Okipage 4W Plus/4M Malfunctions After The Power Supply Has Been Turned On

    The OKIPAGE 4w Plus/4m malfunctions after the power supply has been turned on. • Turn the power supply off, then on again. • Is the LED lamp on? • No Is the AC cable connected correctly? • No Connect the AC cable correctly. •...

  • Page 79: Jam Error

    [JAM error] Paper input jam • Does a paper input jam occur when the power supply is turned on? • Yes Is the jammed paper on paper sensor E? • Yes Remove the jammed paper. • No Is paper sensor E (manual feed/paper) operating normally? •...
  • Page 80 • Yes Measure the resistance of the pulse motor (main). Is the resistance normal (about 12.6 • No Replace the pulse motor (main). • Yes Replace the main control board. 6 - 9...

  • Page 81: Paper Feed Jam

    [JAM error] Paper feed jam • Does a paper feed jam occur when the power supply is turned on? • Yes Is the jammed paper on paper sensor E (paper/exit)? • Yes Remove the jammed paper. • No Is paper sensor E (exit/paper) operating normally? •...

  • Page 82: Paper Size Error

    Paper size error • Is the paper of the specified size being use? • No Use paper of the specified size. • Yes Is paper sensor E (paper) operating normally? • No Replace paper sensor E (paper) or clean the inlet sensor on the high-voltage power supply board.
  • Page 83 Heat assy error • Turn the power supply off, then on again. • Does the Halogen lamp of the heat assy go on? • No Is the Halogen lamp or thermostat disconnected? • Yes Replace the heat assy, Halogen lamp, or thermostat. •...

  • Page 84: Image Troubleshooting

    6.5.3 Image Troubleshooting This section explains how to troubleshoot when an image problem is output as a result of the printing. Figure 6-3 is an example of image problem output. Symptom Flowchart No. An image is light or blurred entirely. (Figure 6-3, A ) Dark background density (Figure 6-3, B ) A blank paper is output.
  • Page 85 An image is light or blurred entirely. • Is the toner low? (Is "Toner Low" being displayed?) • Yes Supply a toner. • No Is the specified paper being used? • No Use the specified paper. • Yes Is the lens of the LED head dirty? •...

  • Page 86: Dark Background Density

    Dark background density • Has the OPC drum being exposed to external light? • Yes Set the OPC drum in the OKIPAGE 4w Plus/4m and wait for about 30 min- utes. • No Is the heat roller of the heat assy dirty? •...

  • Page 87: Cyclic Defect

    Vertical black belt/stripe • Replace the EP unit. • Has this error been recovered? • Yes Caution: After replacing the EP unit, reset the drum counter. (Refer to "Replacing the Drum Cartridge" in "User's Manual".) • No Replace the LED head. •...
  • Page 88 A blank paper is output. • Is the contact plate of the transfer roller in correct contact with the high-voltage power supply board? • No Contact the contact plate of the transfer roller correctly. • Yes Replace the transfer roller. •...

  • Page 89: Poor Fusing

    Poor fusing • Is the specified paper being used? • No Use the specified paper. (xerox 4200 (20 lbs)) • Yes Is the bias spring normal? (Tension: 2.5 kg) • No Replace the bias spring. • Yes Are the heater connector of the heat assy and the CN1 connector of the power supply unit connected correctly.
  • Page 90 Vertical white belt/spripe • Is the lens of the LED head dirty? • Yes Clean the LED head. • No Is the contact plate of the transfer roller in correct contact with the high-voltage power supply board? (See Figure 6-5 •...
  • Page 91 Contents : Toner Supply Roller : Developing Roller : Charge Roller : Cleaning Roller : Transfer Roller : Heat Roller Figure 6-4 6 - 20...
  • Page 92 Contents : Toner Supply Roller : Developing Roller : Charge Roller : Cleaning Roller : Ground (Drum) Figure 6-5 6 - 21...

  • Page 93: Wiring Diagram

    WIRING DIAGRAM...

  • Page 94: Interconnect Signal Diagram

    WIRING DIAGRAM (a)Interconnect Signal Diagram (OKIPAGE 4w Plus) Thermistor Output CN001 Interface Control Output CN003 Interface) (Power Interface) (High-Voltage/Sensor 4 DMPH4-P 3 DMPH3-P 2 DMPH2-P 1 DMPH1-P Interface) (Parallel Head) (LED Head 7 - 1...
  • Page 95 (b)Interconnect Signal Diagram (OKIPAGE 4m) Thermistor Output CN001 Interface Control Output CN003 Interface) (Power Interface) (High-Voltage/Sensor 8 RXD 7 NC 6 TXD 5 RXD 4 SG 3 TXD 2 NC 1 XCLK-N 4 DMPH4-P 3 DMPH3-P 2 DMPH2-P 1 DMPH1-P Interface) (Parallel Head)

  • Page 96: Pcb Layout

    PCB Layout 7.2.1 Main Control Board (HBMC-2 PCB) (OKIPAGE 4w Plus) S W I Short Plug Plug Setting Content Remarks External EPROM is valid. For a Chinese product and all maintenance parts. Mask ROM in the CPU is valid. For all products except Chinese product. 7 - 3...

  • Page 97: Main Control Board (Hbmc-3 Pcb)(Okipage 4M)

    PCB Layout 7.2.2 Main Control Board (HBMC-3 PCB) (OKIPAGE 4m) S W I Short Plag Plag Setting Content Remarks External EPROM is valid. Mask ROM in the CPU is valid. not used Switch Setting DIP Switch Content UPPER SIDE* AUTO I/F SW1-1 LOWER SIDE FIX I/F (By SW2-2)

  • Page 98: High-Voltage Power Sapply Board

    7.2.3 High-Voltage Power Supply Board 7 - 5...

  • Page 99: Parts List

    PARTS LIST...
  • Page 100 PARTS LIST Figure 8-1 Cover Assy Upper 8 - 1...
  • Page 101 Table 8-1 Cover Assy Upper Part Name Part No. Q'ty Remarks Upper Cover 1PP4128-1251P1 Lamp 3PP4128-1255P1 Guide Slide (L) 2PP4128-1256P1 Guide Slide (R) 2PP4128-1257P1 Spur Gear (A) 4PP4128-1260P1 Hopper Plate 40249301 8 - 2...
  • Page 102 Figure 8-2 Base Frame Unit 8 - 3...
  • Page 103 Table 8-2 Base Frame Unit Part Name Part No. Q'ty Remarks Base Frame Assy 2PP4083-1502G1 High-Voltage Power Supply Board 4YA4130-1024G1 Paper Sensor E 3PP4083-1191P1 Friction Pad 4PB4083-1245P1 Separator Guide 3PP4083-1244P1 Compression Spring S 4PP4083-1246P1 Toner Sensor Assy 3PA4083-1193G1 Pulse Motor 4PB4083-1172P1 Ep Unit Consumable...
  • Page 104 40249501 Paper Guide (L) 40249401 Paper Holder 1PP4083-1231P1 Paper Sensor Exit 3PP4083-1192P1 Hopper Spring 4PP4083-1247P1 For OEL/OKI-INT, CHINA, TAIWAN Top Cover Assy 40271102 (OKIPAGE 4W plus) Top Cover Assy 40271104 For KOREA (OKIPAGE 4W plus) Top Cover Assy 40271106 For OEL (OKIPAGE 4m)
  • Page 105 Figure 8-3 Heat Assy 8 - 6...
  • Page 106 Table 8-3 Heat Assy Part Name Part No. Q'ty Remarks Heat Roller 3PB4083-1202P1 Halogen Lamp 3PB4083-6103P4 120V Halogen Lamp 3PB4083-6103P5 230V Thermostat 4PB4083-1204P1 Thermistor 4PB4083-1205P1 Heat Cord 4PB4083-1213P1 8 - 7...
  • Page 107 Figure 8-4 Base Plate Unit 8 - 8...
  • Page 108 Table 8-4 Base Plate Unit Part Name Part No. Q'ty Remarks Base Plate Assy 3PA4083-1135G1 Insulation Sheet 3PB4083-1251P1 Power Supply Unit 4YB4049-1853P1 120V Power Supply Unit 4YB4049-1854P1 230V Main Control Board 4YA4121-2516G2 For OP4W Plus (HBMC-2 PCB) Without ROM Main Control Board 4YA4121-2516G3 For OP4m (HBMC-3 PCB)
  • Page 109 APPENDIX...

  • Page 110: Appendix Alocal Printing

    Appendix A LOCAL PRINTING (1) The following operation enables the OKIPAGE 4w Plus/4m to print data by itselt. <Operation> With the cover open, turn on the AC switch and then close the cover. The following print patterns are printed. A - 1...

  • Page 111: Appendix Bparallel Interface

    Appendix B PARALLEL INTERFACE (1) Connector • Printer side : 36-pin receptacle Type: 57RE-40360-730B-D29A (Daiichi Denshi) or equivalent • Cable side : 36-pin plug Type: 57-30360 (Daiichi Denshi) or equivalent (2) Cable • Cable length : 6 feet (1.8 m) max. (A Shielded cable composed of twisted pair wires is recommended for noise prevention.) B - 1...
  • Page 112 (3) Parallel I/F signals Pin No. Signal Name Direction Function (Compatible Mode) DATA STROBE Parallel data sampling strobe DATA BIT - 1 DATA BIT - 2 DATA BIT - 3 DATA BIT - 4 Printer parallel input/output data DATA BIT - 5 DATA BIT - 6 DATA BIT - 7 DATA BIT - 8...
  • Page 113 (4) Signal level • LOW : 0 V to +0.8 V • HIGH : +2.4 V to 5.0 V (5) Interface circuit a) Receiving circuit R = 3.3K (1.0-K STROBE) b) Sending circuit (Open Collector) 3.3K (6) Timing charts a) Data receiving timing (compatible mode) PARALLEL DATA (DATA BITs 1 to 8) 0.5 s min.
  • Page 114 c) Data sending timing (nibble mode) ACKNOWLEDGE BUSY DATA bit 3 DATA bit 7 FAULT DATA bit 0 DATA bit 4 SELECT DATA bit 1 DATA bit 5 PAPER END DATA bit 2 DATA bit 6 B - 4...

  • Page 115: Appendix C Macintosh Interface

    AppendixC Macintosh INTERFACE (OKIPAGE 4m) 1) Connector • Printer side : 8-pin mini DIN receptacle Type TCS7187-01-201 (made by HOSHIDEN) or equivalent • Cable side : 8-pin mini DIN plug Type TCP7180-01-110 (made by HOSHIDEN) or equivalent 2) Cable Apple system peripheral-8 cable (M0197 LL / B : made by Apple) 3) Interface signal...
  • Page 116 5) Connector Pin Arrangement (As viewed from the cable side) C - 2...

  • Page 117: Appendix D Maintenance Utility

    Appendix D MAINTENANCE UTILITY OUTLINE OF MAINTENANCE UTILITY The maintenance utility is an application program that operates on Microsoft Windows 3.1 or higher. The maintenance utility has the following functions: • Transmission of menu setting command to initialize and change setting values •...

  • Page 118: Detail Of Each Function

    DETAIL OF EACH FUNCTION Engine Menu Setting Engine Menu Setting is used to set, display, and change the following menu items: (See Figure D-1.) (1) Print Position Used to adjust the print start position. (2) LED Head Marking No. Used to adjust the exposure time of the LED head. (3) LED Head Width Used to specify the LED head dot count.

  • Page 119: Printer Status

    (1) Drum Count Number of revolutions of mounted EP drum (2) Total Drum Count Total number of revolutions of EP drum after shipment (3) Page Count Total number of printed pages after shipment clicking the "Reset" button cleans each counter. (4) Reset All Used to clear all counters.
  • Page 120 About About is used to display the following information: Engine maintenance utility version information Printer version information and memory size information Printer device ID information See figure D-4. Reload Reload is used to reload menu setting values. Exit Clicking the Exit button terminates the maintenance utility. D - 4...
  • Page 121 <Engine Maintenance Driver GUI> Figure D-1 Main Menu Dialog Figure D-2 Test Print Dialog D - 5...
  • Page 122 Figure D-3 Option Menu D - 6...
  • Page 123 D - 7...
  • Page 124 Oki Data Corporation 4-11-22, Shibaura, Minato-ku, Tokyo 108, Japan Tel: (03) 5445-6162 Fax: (03) 5445-6189 00000000TH...

This manual is also suitable for:

Okipage 4w plus

Table of Contents