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Page 2: Service Manual
300 dpi, which is ideal for printing, but does not view on most displays well. Okidata is a registered trademark, and OkiPage is a trademark of Oki Electric Industry Co., Ltd. HP, LaserJet and PCL5e are trademarks of Hewlett-Packard Co. Adobe and Acrobat are trademarks of Adobe Systems Incorporated.
Page 3: Table Of Contents
Table of Contents Page Service Guide OKIPAGE4w 0 General Manual Information Front Cover Preface 1 Configuration CONFIGURATION Printer Configuration Specification Safety Standards - Certification Label ..Warning Label 2 Operation Description OPERATION DESCRIPTION Main Control Board Power Supply Unit High-Voltage Power Supply Board...
Page 4 Table of Contents Page ..Paper Sensor E, Paper Sensor Exit and Toner Sensor Assy ..Base Plate 4 Adjustment Adjustment ..Adjustment Types and Functions ..Adjustment When Replacing a Part 5 Periodical Maintenance Periodical Maintenance - Periodical Replacement Parts Cleaning 6 Troubleshooting Procedures Troubleshooting Procedures - Troubleshooting Tips Check Points Before Correcting Image Problems Notes When Correcting Image Problems...
Page 5 Table of Contents Page Timing charts C Maintenance Utility Maintenance Utility - Outline Of Maintenance Utility ROLE OF MAINTENANCE UTILITY OUTLINE OF MAINTENANCE UTILITY FUNCTIONS DETAIL OF EACH FUNCTION - Engine Menu Setting ..Engine Counter ..Exit ..Printer Status ..Test Print ..Option ..About ..Reload...
Page 6: Service Guide Okipage4W
This manual is written for use by service personnel. Refer to the customer documentation for handling and operating procedures. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 7: Configuration
The OKIPAGE 4w consists of a control block, a power supply unit, and an engine block. (See Figure 1-1.) Figure 1-1 Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 8: Printer Configuration
Page: 4 Service Guide OKIPAGE4w Chapter 1 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.
Page 10 Page: 5 Service Guide OKIPAGE4w Chapter 1 Configuration 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 1.71 lb (3.8 kg) (4) Development method Dry non-magnetic development system Exposure method LED stationary head (5) Paper used Type •...
Page 11 (14) Consumables Toner cartridge kit 1,000 (5% duty) Image drum cartridge 10,000 (at continuous printing) Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 12 Certification Label The safety certification label is affixed to the following location of the OKIPAGE 4w: Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 13 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. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 14: Operation Description Operation Description
The display of the higher-level host is used for device operation and status display. Figure 2-1 is the block diagram of the OKIPAGE 4w. Figure 2-1 Block Diagram Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 15 Page: 9 Service Guide OKIPAGE4w Chapter 2 Operation Description 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 an LED head, a main motor, and an electromagnetic clutch.
Page 17 The power supply unit supplies +5 V and +24 V to the main control board from 230 VAC /120 VAC. The power supply unit also contains a heater drive circuit. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 18 Page: 11 Service Guide OKIPAGE4w Chapter 2 Operation Description High-Voltage Power Supply Board (1) High-Voltage power supply circuit The high-voltage power supply circuit generates the following voltages required for the electro-photographic processor from +5 V according to the control sequence from the main control board.
Page 19 Toner sensor Detects the low toner status. ON (long): Toner low OFF (short): Toner high Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 20 Page: 12 Service Guide OKIPAGE4w Chapter 2 Operation Description Electro-Photographic Processor The electro-photographic processor prints out the image data sent from the main control board on sheets of paper. Figure 2-3 shows the layout of the electro-photographic processor. (1) Image drum unit The image drum unit makes toner adhere to the electrostatic latent image with static electricity.
Page 21 If the heat roller temperature rises abnormally, the thermostat in the heater voltage supply circuit cuts off the AC voltage supply. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 22: Electro-Photographic Process
Page: 13 Service Guide OKIPAGE4w Chapter 2 Operation Description Electro-Photographic Process (1) Electro-photographic process The electro-photographic process is outlined below. 1 Charging The surface of the image drum is given a uniform negative charge by applying DC voltage to the CH roller.
Page 24: Explanation Of Each Operation - Hopping
Page: 14 Service Guide OKIPAGE4w Chapter 2 Operation Description Explanation of Each Operation (1) Hopping As shown in the figure below, the clutch for hopping is turned on/off according to whether current to the coil is on or off. When the clutch is OFF When the clutch is ON When the clutch is on, the hopping gear engages with the clutch plate to turn the hopping roller.
Page 26: Printing And Warm-Up
Page: 15 Service Guide OKIPAGE4w Chapter 2 Operation Description Printing and warm-up At warm-up Rotate the pulse motor (main) in direction a. The planetary gear rotates in direction a', dislocating its position in direction a''. This causes the planetary gear to be separated from gear A. The hopping gear will not rotate.
Page 27 The paper advances further in synchronization with the print data. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 28: Charging
Charging is performed by applying DC voltage to the charge roller in contact with the surface of the image drum. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 30: Development
3 Toner is attracted to the exposed (low-potential) portion of the image drum at the point of contact between the image drum and the developing roller, making the electrostatic latent image visible. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 32: Fusing
The back-up roller is pressed against the heat roller by the pressure spring on each side. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 33: Cleaning
After transfer is complete, the cleaning roller temporarily draws in the residual toner adhering to the image drum with static electricity and then returns it to the image drum. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 34: Paper Jam Detection
Page: 22 Service Guide OKIPAGE4w Chapter 2 Operation Description Paper Jam Detection The OKIPAGE 4w monitors the paper status when the power supply is on and during printing. In the following cases, the OKIPAGE 4w interrupts the printing process and reports a paper jam. To resume printing, open the cover, remove the jammed paper, and close the cover.
Page 35 121.9 20.0 20.0 Outlet sensor OFF Unit: mm Timing Chart for Paper Feed (Tray Feed) Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 36: Toner Low Detection
Page: 23 Service Guide OKIPAGE4w Chapter 2 Operation Description Toner Low Detection • Hardware configuration of toner sensor The figure below shows the hardware configuration of the toner sensor. • Toner detection method (1) Toner sensor monitoring conditions are shown in the figure below.
Page 37 4.9 sec. Toner low time t1> 1.2 sec. Toner full time 1.2 sec. > t1> Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 38: Cover Open
CVOPN signal is issued to notify the main control board of the switch status and cover open processing is executed. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 39: Parts Replacement
The replacement procedures to be explained here include disassembling, not assembling. When reassembling parts, assemblies, and units, reverse the disassembling steps. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 40: Precautions For Parts Replacement
Page: 26 Service Guide OKIPAGE4w Chapter 3 Parts Replacement Precautions for Parts Replacement (1) Be sure to disconnect the AC cord and interface cable before replacing parts. (a) Be sure to disconnect the AC cord in the following procedures: i) Turn off the POWER switch (0).
Page 41 Table 3-1 lists the maintenance tools necessary for parts replacement. [Maintenance Utility] Table 3-2 Maintenance Utility Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 42: Parts Layout
Parts Layout This section explains the layout of main parts. [Upper Cover Assy] Figure 3-1 Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 43 Page: 28 Service Guide OKIPAGE4w Chapter 3 Parts Replacement Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 44 Page: 29 Service Guide OKIPAGE4w Chapter 3 Parts Replacement Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 45: Replacing Parts
Chapter 3 Parts Replacement Replacing Parts This section explains how to replace parts and assemblies. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 46: Extend Plate
Chapter 3 Parts Replacement Extend Plate (1) Remove two claws and remove paper support assy 1. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 47: Led Head And Head Spring
(2) Remove the left clamp and LED head 2. Then remove flat cable assy 3 and FG cable 5. (3) Remove two head springs 4. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 48: Transfer Roller
(2) Remove the right claw. Then remove transfer roller 3, two registration bearings 4, and gear T5. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 49: Upper Cover Assy
Page: 34 Service Guide OKIPAGE4w Chapter 3 Parts Replacement 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 remove image drum unit 3.
Page 51: High-Voltage Power Supply Board
Page: 35 Service Guide OKIPAGE4w Chapter 3 Parts Replacement High-Voltage Power Supply Board (1) Remove upper cover assy. (See Upper Cover Assembly in this Chapter). (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 remove high-voltage power supply board 2.
Page 53: Top Cover Assy And Flat Cable Assy
Page: 36 Service Guide OKIPAGE4w Chapter 3 Parts Replacement Top Cover Assy and Flat Cable Assy (1) Remove the upper cover assy. (See Upper Cover Assembly in this Chapter). (2) Remove the LED head. (See LED Head and Head Spring in this Chapter).
Page 55: Paper Holder
(4) Remove the claw and remove hopper spring 4. (5) Remove the claw and remove stopper spring 5. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 56: Side Plate M And Idle Gear
(3) Remove grounding plate 3, two idle gears P 4, idle gear M 5, idle gear 3R 6, idle gear 2R 7, idle gear heat 8, idle gear R 9, and gear R 10. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 57: Registration Roller
(2) Move registration roller 1 to the right and remove it by lifting. (Two registration bearings 2 also come off at the same time. Take care not to lose them.) Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 58: Eject Roller Shaft And Eject Roller
E (A) 2 and idle gear E (B) 3. (4) Unlock and remove eject roller shaft 4. (5) Remove two eject rollers 5. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 59: Fuser Assy
(3) Remove two screws 1, disconnect connector 2, and remove heat assy 3. Note: Do not disconnect lamp ground screw on left side of fuser. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner...
Page 60 Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 61: Pressure Roller B (Back Up Roller)
Page: 42 Service Guide OKIPAGE4w Chapter 3 Parts Replacement Pressure Roller B (Back Up Roller) (1) Remove the upper cover assy. (See Upper Cover Assy in this Chapter). 2) Remove the high-voltage power supply board. (See High-Voltage Power Supply Board in this Chapter).
Page 63: Separator Guide
Page: 43 Service Guide OKIPAGE4w Chapter 3 Parts Replacement Separator Guide (1) Remove the upper cover assy. (See Upper Cover Assy in this Chapter). (2) Remove the high-voltage power supply board. (See High-Voltage Power Supply Board in this Chapter). (3) Remove five screws 1.
Page 65: Pulse Motor (Main)
(4) Remove the base frame. (See Separator Guide in this Chapter). (5) Remove two screws 1 and remove pulse motor (main) 2. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 66: Hopping Shaft Assy
(Knock pin 5 also comes off at the same time. Take care not to lose it.) (8) Draw out hopping shaft assy 1 to the right and remove magnet H6. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 67: Paper Sensor E, Paper Sensor Exit And Toner Sensor Assy
Page: 46 Service Guide OKIPAGE4w Chapter 3 Parts Replacement Paper Sensor E, Paper Sensor Exit and Toner Sensor Assy (1) Remove the upper cover assy. (See Upper Cover Assy in this Chapter). (2) Remove the high-voltage power supply board. (See High-Voltage Power Supply Board in this Chapter).
Page 69: Base Plate
(3) Remove two screws 1, disconnect connector 2, and remove power supply unit 3. (4) Remove insulation sheet 4. (5) Remove two screws 5 and remove main control board 6 from base plate 7. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner...
Page 70 Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 71: Adjustment Adjustment
Only service and maintenance personnel may use the maintenance utility. This utility cannot be made public for end users. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 72: Cleaning
Page: 49 Service Guide OKIPAGE4w Chapter 4 Adjustment Adjustment Types and Functions 4.1.1 Printer Driver This printer driver has the following functions: • Drum counter reset • Printer menu default • Cleaning page generation Figure 4-1 (1) Drum counter reset This function resets the life of the drum counter when the image drum unit is replaced.
Page 73 Soft Manual or Printer Information Guide. 4.1.2 Engine Maintenance Utility See Appendix C. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 74 Page: 50 Service Guide OKIPAGE4w Chapter 4 Adjustment Adjustment When Replacing a Part The table below lists the parts that require adjustment when they are replaced. Part to be Replaced Adjustment LED head Set the LEd head drive time. Set the LED head dot count.
Page 75 - Setting the LED head dot count (See Section 4.2.2 above) - Setting specifications (ODA/OEL/INT-A/INT-L) Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 76 Consumables Drum" is displayed. Caution: Also reset the drum counter when replacing the EP unit. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 77 Page: 52 Service Guide OKIPAGE4w Chapter 5 Periodical Maintenance Cleaning Remove any toner or dirt and clean the circumference and inside of the printer with a disposable cloth. Caution: Do not touch the image drum, LED lens array, or connector block of the LED head.
Page 78 Figure 5-2 Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 79 (2) Gather as much detailed failure information as possible from the customer. (3) Check the printer under conditions close to that under which the failure occurred. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 80 (3) Is paper in good condition? Does it meet the specifications? (4) Is the image drum seated properly? Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 81 (4) Do not expose the image drum to light for more than five minutes at room temperature. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 82 *2: The LED blinks at a cycle of 0.24 second (0.12s ON). *3: The LED blinks at a cycle of 0.24 second (0.12s ON). Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 83 Troubleshooting If a problem occurs in the OKIPAGE 4w, troubleshoot according to the following procedures: Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 84 Page: 58 Service Guide OKIPAGE4w Chapter 6 Troubleshooting Procedures Status Monitor Message List Table 6-1 lists the status messages and problems displayed on the status monitor. Category Status Message Status Explanation Remedy Code Normal status Warming Up 18 00 Warming-up status.
Page 85 Paper size error Paper Size Error 30 00 Paper of improper size Check the paper. was fed. 2.52" (64 mm) L Also check whether 15.77" (400.56 mm) more than one sheet of paper were fed simultaneously. To clear the error display, open the cover, then close it.
Page 86 Timeout Error occurred. display, turn on the power supply again. Replace the main control board. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 87 Caution: When replacing the main control board troubleshooted according to the troubleshooting flowcharts, also adjust EEPROM data. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 88 Page: 60 Service Guide OKIPAGE4w Chapter 6 Troubleshooting Procedures The OKIPAGE 4w malfunctions after the power supply has been turned on. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner...
Page 89 Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 90 Page: 61 Service Guide OKIPAGE4w Chapter 6 Troubleshooting Procedures [JAM error] Paper input jam Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 91 Page: 62 Service Guide OKIPAGE4w Chapter 6 Troubleshooting Procedures [JAM error] Paper feed jam Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 92 Page: 63 Service Guide OKIPAGE4w Chapter 6 Troubleshooting Procedures Paper exit jam Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 93 Page: 64 Service Guide OKIPAGE4w Chapter 6 Troubleshooting Procedures Paper size error...
Page 95 Page: 65 Service Guide OKIPAGE4w Chapter 6 Troubleshooting Procedures Fuser assy error Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 96 Page: 66 Service Guide OKIPAGE4w Chapter 6 Troubleshooting Procedures Image Troubleshooting This section explains how to troubleshoot when an image problem occurs. Figure 6-3 gives examples of image problems. Figure 6-3 Image Problems...
Page 98 Page: 67 Service Guide OKIPAGE4w Chapter 6 Troubleshooting Procedures An image is light or blurred entirely. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 99 Page: 68 Service Guide OKIPAGE4w Chapter 6 Troubleshooting Procedures Dark background density Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 100 Page: 69 Service Guide OKIPAGE4w Chapter 6 Troubleshooting Procedures Paper is blank. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 101 2.46" (62.5 mm) Replace the heat roller. Pressure roller B 1.98" (50.3 mm) Replace pressure roller B. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 102 Caution: After replacing the image drum , reset the drum counter. (Refer to "Replacing the Drum Cartridge" in Soft Manual or Product Information Guide.) Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 103 Page: 72 Service Guide OKIPAGE4w Chapter 6 Troubleshooting Procedures Print voids. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 104 Page: 73 Service Guide OKIPAGE4w Chapter 6 Troubleshooting Procedures Poor fusing Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 105 Page: 74 Service Guide OKIPAGE4w Chapter 6 Troubleshooting Procedures Vertical white band/stripe Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 106 C : Charge Roller D: Cleaning Roller E : Transfer Roller F : Heat Roller Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 107 Page: 76 Service Guide OKIPAGE4w Chapter 6 Troubleshooting Procedures Figure 6-5 Contents A : Toner Supply Roller B : Developing Roller C : Charge Roller D: Cleaning Roller E : Ground (Drum)
Page 109: Wiring Diagram
Page: 77 Service Guide OKIPAGE4w Chapter 7 Wiring Diagram WIRING DIAGRAM 7.1 Interconnect Signal Diagram...
Page 111: Pcb Layout
Page: 78 Service Guide OKIPAGE4w Chapter 7 Wiring Diagram PCB Layout (1) Main Control Board (HBMC-2 PCB) Short Plag Plag Setting Content External EPROM is valid. Mask ROM in the CPU is valid. (2) High-Voltage Power Supply Board...
Page 113: Parts List
Page: 79 Service Guide OKIPAGE4w Chapter 8 Parts List Cover Assy Upper Figure 8-1 Cover Assy Upper Table 8-1 Cover Assy Upper...
Page 115: Base Frame Unit
Page: 80 Service Guide OKIPAGE4w Chapter 8 Parts List Base Frame Unit Figure 8-2 Base Frame Unit Table 8-2 Base Frame Unit...
Page 118: Base Plate Unit
Page: 81 Service Guide OKIPAGE4w Chapter 8 Parts List Base Plate Unit Table 8 Base Plate Unit...
Page 120: Local Printing
With the cover open, turn on the AC switch and then close the cover. The following patterns prints. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 121: B Parallel Interface
- 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 Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 122: Cable
- Cable length : 6 feet (1.8 m) max. (A Shielded cable composed of twisted pair wires is recommended for noise prevention.) Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 123: Parallel I/F Signals
Page: 85 Service Guide OKIPAGE4w Chapter B Parallel Interface (3) Parallel I/F signals • Connector pin arrangement...
Page 125: Signal Level
- LOW : 0 V to +0.8 V - HIGH : +2.4 V to 5.0 V Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 126: Interface Circuit
Service Guide OKIPAGE4w Chapter B Parallel Interface (5) Interface circuit a) Receiving circuit b) Sending circuit Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 127: Timing Charts
INPUT PRIME timing (when the INPUT PRIME signal is enabled) c) Data sending timing (nibble mode) Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 128: Maintenance Utility - Outline Of Maintenance Utility
- Printer RAM check - Test printing - Printer information display - Printer EEPROM read/write Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 129: Role Of Maintenance Utility
For this reason, only service and maintenance personnel can use the maintenance utility. This utility cannot be made public for printer end users. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 130: Outline Of Maintenance Utility Functions
- About : Used to display engine maintenance utility information and printer information. - Reload : Used to reload menu setting values. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 131: Detail Of Each Function - Engine Menu Setting
Used to reflect the engine menu setting values on the printer. (7) Cancel Used to clear unreflected items. (Items for which Entry is not specified.) Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 132: Engine Counter
Note: Clicking the "Reset" button clears each counter. (4) Reset All Used to clear all counters. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 133: Exit
Page: 94 Service Guide OKIPAGE4w Chapter C Maintenance Utility 4.8 Exit Clicking the Exit button terminates the maintenance utility. Engine Maintenance Driver GUI (Preliminary) Figure C-1 Main Menu Dialog (Preliminary)
Page 134 Figure C-2 Option Menu Dialog (Preliminary) Figure C-3 About Dialog (Preliminary) Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 135: Printer Status
4.3 Printer Status Printer Status is used to display the printer status. (See Figure C-1.) Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 136: Test Print
Test Print is used to check whether the printer can print data normally after the maintenance utility has terminated. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 137: Option
Checks printer RAM. (5) User Sets a destination default (ODA, OEL, INTL, INTA). See Figure C-2. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 138: About
Engine maintenance utility version information Printer version information and memory size information Printer device ID information See figure C-3. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 139: Reload
Service Guide OKIPAGE4w Chapter C Maintenance Utility 4.7 Reload Reload is used to reload menu setting values. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)

Oki Okipage4w Service Manual

General Manual Information

1 Configuration

2 Operation Description

3 Parts Replacement

4 Adjustment

5 Periodical Maintenance

7 Wiring Diagram

8 Parts List

B Parallel Interface

100 C Maintenance Utility

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