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LED PAGE PRINTER PRODUCTS
Service Manual
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Service Guide OKIPAGE6e
Chapter 0 Introduction
Front Cover
OKIPAGE 6e / OKIPAGE 6ex LED PAGE PRINTER PRODUCTS
Adobe Acrobat printable reference copy of the OKIDATA Service Training Manual. 04/15/98 Note: This Adobe Acrobat version of the Okidata Service Training Manual was built with the pictures rendered at 300 dpi, which is ideal for printing, but does not display well on most displays.
OKIDATA has taken care to insure that the information is complete, accurate and up-to-date. However, OKIDATA assumes no responsibility for errors or omissions which may occur. All the information provided is subject to change from time to time at the sole discretion of OKIDATA.
Table of Contents
Page
Service Guide OKIPAGE6e
1 Configuration 1.1 System Configuration 1.2 Printer Configuration 1.3 Optional Configuration 1.4 Specification 1.5 Safety Standards 2 Operation Description OVERVIEW ........OKIPAGE 6e Block Diagram (Figure 2-1) ........OKIPAGE 6ex Block Diagram (Figure 2-2) 2.1 Control Board 2.2 PS Board (Option) 2.3 RAM Board (OKIPAGE 6e/6ex option) 2.4 Power Supply Board ........2.5.1 Electrophotographic Process Mechanism ........2.5.2 Electrophotographic Process ........2.5.3 Process Operation Descriptions 2.6 Paper Jam Detection 2.7 Cover Open 2.8 Toner Low Detection 3 Parts Replacement 3.1 Precautions for Parts Replacement 3.2 Parts Layout - [Lower base unit] ........[Upper cover unit] ........[Base unit] 3.3 How to Change Parts ....3.3.1 Upper Cover ....3.3.2 Stacker ....3.3.3 LED Head ....3.3.4 Eject Roller Assy ....3.3.5 Pulse Motor (Main) ....3.3.6 Pulse Motor (Registration) ....3.3.7 Lower Base Unit ....3.3.8 Motor Assy ....3.3.9 Hopping Roller Assy ....3.3.10 Stacker Cover Assy ....3.3.11 Registration Roller ....3.3.12 Transfer Roller ....3.3.13 Fusing Unit Assy ....3.3.14 Back-up Roller ....3.3.15 Sensor Plate (Inlet) ....3.3.16 Toner Sensor (Adhesion) 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
Table of Contents ....3.3.17 Sensor Plate (Outlet) ....3.3.18 Manual Feed Guide Assy ....3.3.19 Sensor Plate (Paper Supply) ....3.3.20 Main Control PCB ....3.3.21 Power Supply Board and Contact Assy ....3.3.22 Transformer ....3.3.23 Cassette Guide L ....3.3.24 Cassette Guide R 4 Adjustment 4.1 Maintenance Utility Program (OKIPAGE 6e) 4.2 EEPROM Parameter Values Adjustments (OKIPAGE 6ex) ....4.3.1 OKIPAGE6e: 300 dpi LED head ....4.3.2 OKIPAGE6ex: 600dpi LED head 5 Periodical Maintenance 5.1 Periodical Replacement Parts 5.2 Cleaning 5.2.1 Cleaning of LED Lens Array 6 Troubleshooting Procedures 6. TROUBLESHOOTING PROCEDURES 6.2 Check Points before Correcting Image Problems 6.3 Tips for Correcting Image Problems 6.4 Preparation for Troubleshooting 6.5 Troubleshooting Flowchart ....6.5.1 Status Message/Trouble List ....6.5.2 Status Message Troubleshooting ........1-1 The printer does not work normally after the power is turned on. ........2-1 Paper Input Jam ........2-2 Paper Feed Jam ........2-3 Paper Exit Jam ........3 Paper size error ........4 Fusing Unit Error (ERROR 71) (ERROR 72) (ERROR 73) ........5 Fan Error (ERROR 70) ....6.5.3 Image Troubleshooting ........1 Images are Light or Blurred Entirely ........2 Dark Background Density ........3 Blank paper is output. ........4 Black Vertical Belts or Stripes ........5 Cyclic Error ........6 Print Voids ........7 Poor Fusing ........8 White Vertical Belts or Streaks ........Diagram of Contact Assembly Contact Points (Figure 6-4)
Page 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79
Table of Contents ........Diagram of Power Supply / Transfer Roller Contact Point (Figure 6-5) 7 Wiring Diagram 7.1 Interconnect Signal Diagram 7.2 PCB Layout and Connector Signal List 7.3 Resistance Check 7.4 Short Plug Setting 8 Parts List 8.1 General Information A Centronics Parallel Interface Centronics Parallel Interface B Localtalk (RS-422) Serial Interface LOCALTALK (RS422) SERIAL INTERFACE C Diagnostics Test DIAGNOSTICS TEST ....1.1 User Maintenance Mode ....1.2 System Maintenance Mode ....1.3 Engine Maintenance Mode ....1.4 Factory User Setting Operation D Maintenance Utility Overview ....1.1 MAINTENANCE UTILITY OVERVIEW ....1.2 Maintenance Utility Functions ....1.3 Software Configuration #2.0 Main Menu Dialog ....2.1 Engine Menu Group ....2.2 Engine Counter Group ....2.3 Status Monitor ....2.4 Test Print Button ........#2.4.1 Local Print ........2.4.2 Test File Print ....2.5 Option Button ....#2.6 About Button ....2.7 Reload Button ....2.8 Exit Button #3.0 Option Menu Dialog ....3.1 Reset Engine Button ....3.2 EEPROM Upload Button ....3.3 EEPROM Download Button ....3.4 RAM Check Button (Not supported) ....3.5 Set ID Button ....3.6 Exit Button #4.0 Setup Dialog E Multi-Purpose Feeder Maintenance 1. PREFACE
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81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115
Table of Contents ....1.1 Functions ....1.2 External View and Component Names 2. MECHANISM DESCRIPTION - General Mechanism ....2.2 Hopper Mechanism 3. PARTS REPLACEMENT ....3.1 Precautions Concerning Parts Replacement ....3.2 Parts Layout ....3.3 Parts Replacement Methods ........3.3.1 Link ........3.3.2 Separator ........3.3.3 OLEV-11 PCB ........3.3.4 Pulse Motor ........3.3.5 Planet Gear ........3.3.6 Roller-A and B 4. TROUBLESHOOTING - Precautions Prior to the Troubleshooting ....4.2 Preparations for the Troubleshooting ....4.3 Troubleshooting Method ........4.3.1 LCD Status Message List 5. CONNECTION DIAGRAM - Interconnection Diagram ....5.2 PCB Layout 6. PARTS LIST F High Capacity Second Paper Feeder High Capacity Second Paper Feeder Maintenance ....1. OUTLINE - Functions ....1.2 External View and Component Names 2. MECHANISM DESCRIPTION - General Mechanism ....2.2 Hopper Mechanism 3. PARTS REPLACEMENT ....3.1 Precautions Concerning Parts Replacement ....3.2 Parts Layout ....3.3 Parts Replacement Methods ........3.3.1 Pulse Motor (Hopping) ........3.3.2 OLEV-12 PCB ........3.3.3 Hopping Roller Shaft Assembly and One-way Clutch Gear 4. TROUBLESHOOTING - Precautions Prior to the Troubleshooting ....4.2 Preparations for the Troubleshooting ....4.3 Troubleshooting Method ........#4.3.1 LCD Status Message List 5. CONNECTION DIAGRAM ....5.1 Interconnection Diagram ....5.2 PCB Layout
Page 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155
Table of Contents 6. PARTS LIST
Page 156
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Service Guide OKIPAGE6e
Chapter 1 Configuration
OKIPAGE 6e and OKIPAGE 6ex consist of control and engine blocks in the standard configuration, as shown in Figure 1-1. In addition, the options marked with asterisk (*) are available.
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)
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Service Guide OKIPAGE6e
Chapter 1 Configuration
The printer unit consists of the following hardware components:
Electrophotographic Processor Paper Feeder Main Control PCB Operator Panel (OKIPAGE 6ex Only) Power Supply Unit
The printer unit configuration is shown in Figure 1-2.
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)
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Service Guide OKIPAGE6e
Chapter 1 Configuration
The options shown below are available for use with OKIPAGE 6e and OKIPAGE 6ex. These are available separately from the printer unit. (1) 1MB Memory Expansion Board (OKIPAGE 6e/6ex)
(2) SIMM Memory OKIPAGE 6e :1/2/4/8/16 Mbyte OKIPAGE 6ex :1/2/4/8/16/32 Mbyte
(3) Legal/Universal Paper Cassette/
(4) High Capacity Second Paper Feeder
(5) Multi-Purpose Feeder
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)
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Service Guide OKIPAGE6e
Chapter 1 Configuration
External dimensions
Weight Developing method Exposing method Paper used
Height 6.3" (160 mm) Width 12.6" (320 mm) Depth 14.17" (360 mm) 8 kg Dry electrophotography LED stationary head
Standard paper Application paper (manual face-up feed)
- Label - Envelope - OHP paper (Transparency) - Xerox 4200 (20 lbs)
Standard sizes
- Letter (ODA) - Legal (option) - Executive - Envelope - A4 - A5 - B5 - A6 Applicable sizes - Width: 3.94" to 8.5" (100 to 216 mm) - Length: 5.83" to 14" (148 to 355.6 mm)
Automatic feed: 16 to 24 lbs (60 to 90 g/m 2 ) Manual feed: Label, OHP paper (transparency), Envelope
Printing speed First print: 17 sec. Continuous print: 6 sheets/min. for letter size paper Warm-up time: 60 sec. [at room temperature 77°F (25°C) and rated voltage (120 VAC)] Automatic feed or manual feed Face down/face up 300 x 300 dots/inch (OKIPAGE 6e) 600 x 600 dots/inch (OKIPAGE 6ex) 600 x 1200 dots/inch (OKIPAGE 6ex) 120 VAC +5.5%, -15% (ODA) 230 VAC +15%, -15% (ODA)
Paper feeding method Paper delivery method Resolution
Power input
Power consumption
Temperature and humidity Noise Consumables
Peak: Approx. 420W Typical operation: Approx. 160W Idle: Approx. 55W Power save mode: Approx. 15W During operation: 50 to 90°F (10 to 32°C) In storage: 14 to 110°F (-10 to 43°C) During operation: 48 dB (A) or less Standby: 38 dB (A) or less Toner cartridge kit 2,000 (5% duty) Image drum cartridge 20,000 (at continuous printing) 15,000 (3 pages/job) 10,000 (1 page/job)
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)
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Service Guide OKIPAGE6e
Chapter 1 Configuration
1.5.1 Certification Label The safety certification label is affixed to the printer at the location described below.
1.5.2 Warning Label The warning labels are affixed to the sections which may cause bodily injury. Follow the instructions on warning labels during maintenance.
1.5.3 Warning/Caution Marking The following warning and caution markings are made on the power supply board.
ENGLISH Heatsink and transformer core present risk of electric shock. Test before touching. FRENCH Le dissipateur thermique et le noyau du transformateur présentent des risques de choc électrique. Testez avant de, manipuler. SPANISH Las disipadores de color el núcel del transformador pueden producir un choque eléctrico. Compruebe antes de tocar.
PORTUGUESE O dissipador de calor e o núcleo do fransiormador apresentam risco de choque elétrico. Teste antes de focar. ENGLISH Circuits maybe live after fuses open. FRENCH Il se peut que les circuits soient sous tension une fois que les fusibles ont éfé rerirés. SPANISH Las circuitos pueden estar activos una vez que se hayan abierio los fusibles. PORTUGUESE Os circuitos podem estar energizados após os fusiveis se queimarem. 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)
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Service Guide OKIPAGE6e
Chapter 2 Operation Description
OKIPAGE 6e, OKIPAGE 6ex consists of a Main Control PCB, a power supply/sensor board, a PostScript board (OKIPAGE 6ex), an operator panel and an electrophotographic process mechanism. The soft operator panel is used for operation and status display of OKIPAGE 6e and OKIPAGE 6ex. The operator panel is used for operation and status display of OKIPAGE 6ex. The OKIPAGE 6e and OKIPAGE 6ex receive data via the host I/F, these then decode, edit and store the data in memory. Bit map image data is successively transferred to the LED head in one dot line units. OKIPAGE 6e block diagram is shown in Figure 2-1. OKIPAGE 6ex block diagram is shown in Figure 2-2. 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)
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Service Guide OKIPAGE6e
Chapter 2 Operation Description
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)
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Service Guide OKIPAGE6e
Chapter 2 Operation Description
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)
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Service Guide OKIPAGE6e
Chapter 2 Operation Description
The control board consists of a single chip CPU, Program & Font ROM's, one or two DRAMs, an EEPROM, a host interface circuit, and a mechanism driving circuit. Single Chip CPU The single chip CPU is a custom CPU (32-bit internal bus, 16-bit or 32-bit external bus, 25.54 MHz clock with input frequency from a 12.27 MHz clock) which incorporates the RISC CPU and its peripheral devices, and has the following functions: Built-in device Chip select controller Bus controller DRAM controller DMA controller Parallel interface controller Video output port LED STB output port Timer Serial I/O port I/O port Function Control of ROM, DRAM and I/O device
Transfer of image data from DRAM to video output port Control of Centronics parallel interface Control of LED head Generation of various control timing Monitoring of paper running and paper size Control of operator panel, EEPROM, and options Input and output of sensor and motor signals
Program and Font ROM The Program & Font ROM store the PCL5e emulation program and various types of fonts. Mask ROM is used for a Program & Font ROM. The mounting location of this Program & Font ROM varies depending on the type of ROM (for the mounting location see 7.2). DRAM The DRAM is a resident memory (OKIPAGE 6e: 1MB/OKIPAGE 6ex: 2MB) used as a buffer, and it stores edited data, image data, DLL data and macro data. EEPROM 1,024 bit-Electrically Erasable PROM (EEPROM), is loaded with the following kinds of data:
Menu data Various counter data (Page counter, Drum counter) Adjusting parameters (LED head drive time, print start position, paper feed length)
Parallel Interface Parallel data is received from the host system via parallel interface which conforms to the Centronics specification. IEEE 1284 Bi-directional parallel is supported. 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)
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Service Guide OKIPAGE6e
Chapter 2 Operation Description
This board is not included in the current configuration of the product. 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)
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Service Guide OKIPAGE6e
Chapter 2 Operation Description
The RAM board consists of DRAM's and a SIMM socket. DRAM 1MB of DRAM's reside on the RAM board. SIMM Socket One SIMM socket is mounted on the RAM board.
RAM Board Block Diagram (Figure 2-4)
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)
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Service Guide OKIPAGE6e
Chapter 2 Operation Description
The power supply board consists of an AC filter circuit, a low voltage power supply circuit, a high voltage power supply circuit, heater drive circuit, and photosensors. Low Voltage Power Supply Circuit This circuit generates the following voltages. Output Voltage +5 V +30 V +8 V -8 V Use Logic circuit supply voltage Motor and fan drive voltage and source voltage for high-voltage supply Analog supply voltage PS board and analog circuit supply voltage
High Voltage Power Supply Circuit This circuit generates following voltages required for electrophotographic process from +5 V, according to the control seque interrupted automatically to stop the supply of all high-voltage outputs. Output CH DB SB TR CB Voltage -1.35 KV -300 V/+300 V -450 V/ 0 V +500 V to +4 KV/-750 V +400 V Use Voltage applied to charging roller Voltage applied to developing roller Voltage applied to toner supply roller Voltage applied to transfer roller Voltage applied to clearing roller Remarks
Variable
Photosensor The photosensor mounted on this power supply board monitors the paper running state during printing. Sensor Layout Diagram (Figure 2-3)
Sensor Functions and StatusTable (Figure 2-5) Sensor Inlet sensor 1 Function Detects the leading edge of the paper and gives the supervision timing for switching from hopping operation to feeding operation. Monitors paper feeding situation and paper size based on the paper arrival time and running time. Detects the form width. Detects the leading portion of the paper. Monitors the paper feeding situation. Outlet sensor Sensing state ON: Paper exists. OFF: No paper exists.
Inlet sensor 2 Paper sensor OFF: No paper exists.
ON: A4 or larger OFF: Smaller than A4 ON: Paper exists. Monitors the paper feeding and size according to the time of arrival to and leaving past the sensor. Detects the end of the paper. Detects the lack of toner.
ON: Paper exists. OFF: No paper exists. ON: Paper exists. OFF: No paper exists.
Paper end sensor Toner low sensor
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)
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Service Guide OKIPAGE6e
Chapter 2 Operation Description
This mechanism actuates the printing of image data supplied by the control board on the paper by electrophotographic process.
Image Drum Unit The image drum unit consists of a sensitive drum, a charger, and a developer. The unit forms a toner image on the sensitive drum, using a electrostatic latent image formed by the LED head. Registration Motor The registration motor is a pulse motor of 48 steps/rotation, that is two-phase excited by the signal from the Main Control PCB. It drives the hopping and registration rollers via two one-way clutches according to the direction of rotation. Drum Motor The drum motor is a pulse motor of 48 steps/rotation that is two-phase excited by the signal from the Main Control PCB and is the main motor of this mechanism. LED Head Image data for each dot line from the control board is received by the shift register and latch register. The 2496 LED's (OKIPAGE 6e)/4992 LED's (OKIPAGE 6ex) are driven to radiate the image data on the image drum. Fuser The fuser consists of a heater, a heat roller, a thermistor and a thermostat. The AC voltage from the power supply board is applied to the heater controlled by the HEATON signal from the control board. This AC voltage heats the heater. The Main Control PCB monitors the heat roller temperature via the thermistor, and regulates the heater roller to a predetermined temperature (165°C) by connecting or disconnecting the AC voltage supply to the heater. When an abnormal rise of the heater roller temperature takes place, the thermostat of the heater voltage supply circuit becomes active and forcibly cuts 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)
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Service Guide OKIPAGE6e
Chapter 2 Operation Description
The electrophotographic processing is outlined below. The electrophotographic printing process is shown in Figure 2-7. The electrophotographic process timing chart is shown in Figure 2-8. Charging The surface of the image drum is charged uniformly with a negative charge by applying the negative voltage to the charge roller. Exposure Light emitted from the LED head irradiates the negatively charged surface of the image drum. The surface potential of the irradiated portion of the image drum surface becomes lower, forming the electrostatic latent image associated with the print image. Developing and Toner Recovery When the negatively charged toner is brought into contact with the image drum, it is attracted to the electrostatic latent image by static electricity, making the image visible. At the same time, the residual toner on the image drum is attracted to the developing roller by static electricity. Transfer When paper is placed over the image drum surface, the positive charge which is opposite in polarity to that of the toner, is applied to the reverse side by the transfer roller. The toner is attracted by the positive charge and is transferred onto the paper. This results in the transfer of the toner image formed on the image drum onto the paper. Temporary Cleaning Residual toner which remains on the image drum without being transferred is evened out by the cleaning roller and is temporarily attracted to the cleaning roller by static electricity. Fusing The toner image transferred onto the paper is fused to the paper by heat and pressure.
Electrophotographic Process Timing Chart (Figure 2-8)
Figure 2-8 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)
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Service Guide OKIPAGE6e
Chapter 2 Operation Description
Hopping and Feeding Hopping and feeding motions are actuated by a single registration motor in the mechanism as shown below:
The registration motor turning in direction "a" drives the hopping roller. The registration motor turning in direction "b" drives the registration roller. The registration and hopping gears have one-way bearing, so turning any of these gears in the reverse direction will not transmit the motion to the corresponding roller. Hopping 1. For hopping, the registration motor turns in direction "a" (CW direction) and drives the hopping roller to advance the paper until the inlet sensor turns on (in this case, the registration gear also turns, but the registration roller is prevented from turning by the one-way bearing). 2. After inlet sensor is turned on by the paper advance, the paper is further advanced to a predetermined distance until the paper hits the registration roller (the skew of the paper can thus be corrected). Feeding 1. When hopping is completed, the registration motor turning in direction "b" (CCW direction) drives the registration roller to advance the paper (in this case, the hopping gear also turns, but the hopping
roller is prevented from turning by the one-way bearing). 2. The paper is further advanced, synchronization to the print data.
Charging Charging is actuated by the application of the DC voltage to the charge roller that is in contact with the image drum surface.
The charge roller is composed of two layers, a conductive layer and a surface protective layer, both having elasticity to secure good contact with the image drum. When the DC voltage applied by the power supply exceeds the threshold value, charging begins. The applied voltage is proportional to the charge potential, with offset of approximately -550V.
Exposure Light emitted by the LED head irradiates the image drum surface with a negative charge. The surface potential of the irradiated portion of the image drum drops, forming an electrostatic latent image associated with the image signal.
The image drum is coated with an underlayer (UL), a carrier generation layer (CGL), and carrier transfer layer (CTL) on aluminum base. The organic photo-conductor layer (OPC), comprising CTL and CGL, is about 20 mm thick.
The image roller surface is charged to about -750 V by the contact charge of the charge roller. When the light from the LED head irradiates the image drum surface, the light energy generates positive and negative carriers in the CGL. The positive carriers are moved to the CTL by an electrical field acting on the image drum. Likewise, the negative carriers flow into the aluminum layer (ground).
The positive carriers moved to the CTL combine with the negative charges on the image drum surface accumulated by the contact charge of the charge roller, lowering the potential on the image drum surface. The resultant drop in the potential of the irradiated portion of the image drum surface forms an electrostatic latent image on it. The irradiated portion of the image drum surface is kept to about -100 V.
Developing Toner is attracted to the electrostatic latent image on the image drum surface, converting it into a visible toner image. Developing takes place through the contact between the image drum and the developing roller. 1. As the toner supply roller rotates while rubbing on the developing roller, a friction charge is generated between the developing roller and the toner, allowing the toner to be attracted to the developing roller (the developing roller surface is charged positive and the toner, negative.
2. The toner attracted to the developing roller is scraped off by the doctor blade, forming a thin coat of toner on the developing roller surface. 3. Toner is attracted to the exposed portion (low-potential part) of the image drum at the contact of the image drum and the developing roller, making the electrostatic latent image visible
. An illustration of activities at the contact point of the image drum surface and the developing roller (arrow marks denote the direction of the electric field). Note: The bias voltage required during the developing process is supplied to the toner supply roller and the developing roller, as shown in the diagram below. -450 VDC is supplied to the toner supply roller, -300 VDC to the developing roller.
Transfer The transfer roller is composed of conductive sponge material, and is designed to get the image drum surface and the paper in a close contact. Paper is placed over the image drum surface, and the positive charge, opposite in polarity to that of the toner, is applied to the paper from the reverse side. The application of a high positive voltage from the power supply to the transfer roller causes the positive charge inducement on the transfer roller surface, transferring the charge to the paper as it contacts the transfer roller. The toner with negative charge is attracted to the image drum surface, and it is transferred to the upper side of the paper due to the positive charge on the reverse side of the paper.
Fusing When the image transfer is completed, the toner image is fused to the paper by heat and pressure as the paper with unfused toner image passes between the heater roller and the back-up roller. The heater roller with Teflon coating incorporates a 400W heater (Halogen lamp), which heats the heat roller. A thermistor which is in contact with the heater roller regulates the temperature of the heater roller at a predetermined level (about 165°C). A safety thermostat cuts voltage supply to the heater off by opening the thermostat in the event of abnormal temperature rises. The back-up roller is held under a pressure of 3.8 kg applied by the pressure spring on each side.
Cleaning When the transfer is completed, the residual toner left on the image drum is attracted to the cleaning roller temporarily by static electricity, and the image drum surface is cleaned.
Cleaning of rollers The charge, transfer and cleaning rollers are cleaned for the following cases:
Warming up when the power is turned on. Warming up after the opening and closing of the cover. When the number of sheets accumulated reaches 10 or more, and the printout operation ends. User initiated.
Changes in bias voltage applied to each roller moves the attaching toner off the roller to the image drum and returns it to the developer. 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)
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Service Guide OKIPAGE6e
Chapter 2 Operation Description
The paper jam detection function monitors the paper condition when the power is turned on and during printing. When any of the following conditions arises, this function interrupts the printing process. If any of the following errors is encountered, printing can be recovered by removing the jammed paper (by opening the upper cover, removing the jammed paper and closing the upper cover). Error Paper input jam Cause of error The paper is in contact with the inlet sensor when the power is turned on. After hopping operation is attempted three times, the leading edge of the paper does not reach the inlet sensor. The paper is in contact with at the paper sensor when the power is turned on. The leading edge of the paper does not reach the paper sensor within a predetermined distance since the paper has reached the inlet sensor. The trailing edge of the paper does not pass over the paper sensor within a predetermined distance after the same has passed over the inlet sensor. The leading edge of paper does not reach the outlet sensor within a predetermined distance after the paper has reached the paper sensor. The paper is in contact with the outlet sensor when the power is turned on. The paper does not pass over the outlet sensor within a predetermined distance after the leading edge of the paper has reached the outlet sensor. The paper size check for manual feeding finds that the paper size is free size. The size of the paper is monitored by the inlet sensor 1. The paper is not detected by the inlet sensor 1 within predetermined distance. The inlet sensor 2 detects that the size of the loaded paper is A4 or larger, or smaller than A4. The detected paper size differs from the paper size set by command or menu. The paper size check for manual feeding finds that the paper size is free size.
Paper feed jam
Paper exit jam
Paper size error
Paper Feed Timing Chart
Type of error Paper feed error Paper feed jam Paper feed jam Paper size error Paper exit jam Paper feed jam
Monitor Hopping start to Inlet sensor on Inlet sensor on to Write sensor on Write sensor on to Outlet sensor on Inlet sensor on to Inlet sensor off Outlet sensor on to Outlet sensor off Inlet sensor off to Write sensor off
Standard value 72.0 20.0
Error Plus Minus Error 36.0 _ 20.0 25.0 _ _ 45.0 45.0 _
140.5 Depends on the paper length Depends on the paper length 22.2
45.0 45.0 22.0
Unit : mm Note: Hyphen "-" in the table represent "no check is done."
Paper Length List Type A4 A5 B5 LETTER LEGAL 13 LEGAL 14 EXEC A6 Monarch COM-9 COM-10 DL C5 Free Paper length 297.0 210.0 257.0 279.4 330.2 355.6 266.7 148.0 190.5 225.4 241.3 220.0 229.0 110.0 ~ 355.6 Check range Min. 252.0 165.0 212.0 234.4 285.2 310.6 221.7 103.0 145.5 180.4 196.3 175.0 184.0 65.0 Check range Max. 342.0 255.0 302.0 324.4 375.2 400.6 311.7 193.0 235.5 270.4 286.3 265.0 274.0 400.6
Unit : mm
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)
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Service Guide OKIPAGE6e
Chapter 2 Operation Description
When the stacker cover is opened, the cover open microswitch on the power/sensor board is turned off to cut +5V supply to the high voltage power supply circuit. This results in the interruption of all high-voltage outputs. At the same time, the CVOPN signal is sent to the control board to notify that the microswitch is off, and the control board carries out the cover open process.
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: 19
Service Guide OKIPAGE6e
Chapter 2 Operation Description
Device The Toner Low Detection device consists of a stirring gear which rotates at a constant rate, a stirring bar and a magnet on the stirring bar. The stirring bar rotation is driven by the link to the protrusion in the stirring gear.
Operation Toner Low is detected by monitoring the time interval of the encounter of the magnet set on the sensor lever and the magnet on the stirring bar. Operation during Toner Full state The stirring bar is rotated due to the mechanical transmission of energy originating from the interlocking with the stirring gear. Even when the magnet on the stirring bar reaches the maximum height, the stirring bar is pushed by the stirring gear, since the other end is being dipped in the toner.
Operation during Toner Low state When the stirring bar reaches the maximum height, it falls to the minimum height due to its own weight, since there is no resistance provided by the toner on the other side. Because of this, the time interval during which it is in encounter with the magnet of the sensor lever becomes longer. By monitoring this time interval, Toner Low can be detected.
When the Toner Low state is detected 2 times consecutively, Toner Low is established. When the Toner Full state is detected 2 times consecutively, Toner Low is canceled. When there is no change with the toner sensor for 2 cycles (4.875 sec. x 2) or more, then the Toner Sensor Alarm is activated. The toner sensor is not monitored while the drum motor is in halt. TONER FULL State Diagram
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
The section explains the procedures for replacement of parts, assemblies, and units in the field. Only the disassembly procedures are explained here. For reassembly, reverse the steps of disassembly procedure. (1) Before starting the parts replacement, remove the AC power cord and interface cable. (a) Remove the AC power cord in the following sequence: i) Turn off ("o") the power switch of the printer. ii) Disconnect the AC inlet plug of the AC power cord from the AC receptacle. iii) Disconnect the AC power cord and interface cable from the printer. (b) Reconnect the printer in the following sequence. i) Connect the AC power cord and interface cable to the printer. ii) Connect the AC inlet plug to the AC receptacle. iii) Turn on ("l") the power switch of the printer.
(2) Do not try to disassemble as long as the printer is operating normally. (3) Do not remove parts which do not need to be touched; try to keep the disassembly to a minimum. (4) Use specified service tools. (5) When disassembling, follow the procedure in sequence laid out in this manual. Parts may be damaged if these sequences are not followed. (6) Since screws, collars and other small parts are likely to be lost, they should temporarily be attached to the original positions during disassembly.
(7) When handling IC's such as microprocessors, ROM's and RAM's, or circuit boards, do not wear gloves that are likely to generate static electricity. (8) Do not place printed circuit boards directly on the equipment or floor.
[Service Tools] The tools required for field replacement of printed circuit boards and units are listed in Table 3-1. Table 3-1 Service Tools
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
This section describes the layout of main parts of the equipment. [Lower base unit]
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
This section explains how to change parts and assemblies listed in the disassembly diagram below.
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) With the power switch turned off, unplug the AC power cord from the outlet. (2) Disconnect the interface cable 1. (3) Remove the option board D if it is mounted. (4) Lift the left side of the operator panel assy (or logo frame) 4 and remove it. (5) Disconnect the flexible cable 5 from the connector (CN1) 6 of the operator panel PCB 6, and put the cable inside the cover. (OKIPAGE 6ex only) (6) Open the stacker cover assy 9 by pressing the knobs 8 on the left and right sides. (7) Remove the image drum unit 0. (8) Remove two screws A, and open the manual feed guide assy B. Lift the front of the upper cover C up and release the claws at two locations on the back side. Align the stacker cover 9 against the diagonal line of the square holes of the upper cover and lift up the upper cover C slightly, then remove it. Note: When removing or installing the upper cover, be careful not to damage the cable 5.
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) Remove the upper cover. (See 3.3.1) (2) Remove two stacker clamps 1 and the stacker 2 by bending the upper cover.
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) Open the stacker cover. (2) Remove the flexible cable (LED) 1 from the PC connector 2 of the LED head 3. (3) Remove the LED head by prying the left side free from the retaining clip. Note: Be careful to not lose the contact (LED) 4. Note:
Be sure not to directly touch or push the SLA part of the LED head. After mounting the new LED head, set drive time of the LED head according to the marking on the LED head (see 4.3.1 or 4.3.2). For the installation of the flexible cable (LED) 1, install the PC connector 2 to the flexible cable (LED) 1 first, then connect the LED head 3 to the PC connector.
When installing a new LED head, be careful not to lose the contact (LED) 4.
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) Remove the upper cover (see 3.3.1). (2) Press the clamp on the left side of the eject roller assy 1 in the direction of the arrow. Detach the eject roller assy from the lower base unit 2, and remove it. Note: When installing the eject roller, verify the proper engagement with the main unit.
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) Remove the upper cover (see 3.3.1). (2) Remove the connector 3 from (CN2) 2 of the Main Control PCB 1. (3) Remove two screws 4 and remove the pulse motor (main) 6 from the motor bracket 5.
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) Remove the upper cover (see 3.3.1). (2) Remove the connector 3 from (CN3) 2 of the Main Control PCB 1. (3) Remove two screws 4 and remove the pulse motor (registration) 6 from the motor bracket 5.
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) Remove the upper cover (see 3.3.1). (2) Remove the connecting cables 4 and 5 of the pulse motor from the connectors 2 and 3 of the Main Control PCB 1. (3) Remove the connector 6 of the LED head from the Main Control PCB 1. (OKIPAGE 6e: 1 connector, OKIPAGE 6ex: 2 connectors) (4) Remove seven screws 7, then remove the lower base unit 8.\
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) Remove the upper cover (see 3.3.1). (2) Remove the lower base unit (see 3.3.7). (3) Stand the lower base unit on its side as shown, and unlock two clamp levers, then remove the motor assy 1.
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) Remove the upper cover (see 3.3.1). (2) Remove the lower base unit (see 3.3.7). (3) Remove the motor assy (see 3.3.8). (4) With the lower base unit 1 standing on its side, remove the one-way clutch gear 2 and the bearing (A) 3, then remove the hopping roller assy 4 and the bearing (B) 5
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) Remove the upper cover (see 3.3.1). (2) Remove the motor assy (see 3.3.8). (3) Remove the reset lever R 1. (4) Detach the reset spring 2 from the lower base unit 3, turn the reset level L 4 in the direction of the arrow A until it stops, and remove it in the direction of the arrow B . (5) Release two pins of the lower base unit 3, then remove the stacker cover assy 5.
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) Remove the upper cover (see 3.3.1). (2) Remove the lower base unit (see 3.3.7). (3) Remove the motor assy (see 3.3.8). (4) With the lower base unit standing on its side (view A), remove the one-way clutch gear 1. (5) Press the registration roller 2 to the right side (in the direction of the arrow as shown) and lift up the left side. Remove the registration roller 2 and the bearing (registration) 3.
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) With the power switch turned off, unplug the AC power cord from the outlet. (2) Open the stacker cover. (3) Release TR gear 1 by unlocking the latch 4 of the main unit (never apply an excessive force when unlocking the latch). (4) Lift the right side of the transfer roller 2, and shift it to the right side, then pull it out from the main unit (at this time, the bearings 3 of the left and right sides of the transfer roller 2 will release themselves).
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) Remove the upper cover (see 3.3.1). (2) Remove the lower base unit (see 3.3.7). (3) Remove the stacker cover assy (see 3.3.10). (4) Remove four screws 1 and remove the fusing unit 2. Caution: Fusing unit assy may be hot. Use care when handling. Note: When installing or removing the fusing unit assy, tighten or loosen the screws while holding the fusing unit down with your hand.
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) Remove the fusing unit assy (see 3.3.13). (2) Lift the left side of the back-up roller 1, and pull it out to the left side (at this time, two bushings 2, the bias springs 3 and washers 4 and 5 will release themselves). Note: Do not bend or lose springs.
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) Remove the upper cover (see 3.3.1). (2) Remove the lower base unit (see 3.3.7). (3) Press the clamps of three sensor plates (inlet) 1, and remove the sensor plates by pressing them upward from the bottom side.
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) Remove the upper cover (see 3.3.1). (2) Remove the lower base unit (see 3.3.7). (3) Press the clamp of the toner sensor 1, and remove the sensor by pushing it up from the bottom.
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) Remove the upper cover (see 3.3.1). (2) Remove the eject roller assy (see 3.3.4). (3) Remove the lower base unit (see 3.3.7). (4) Remove the fusing unit assy (see 3.3.13). (5) Press the clamp of the sensor plates (outlet) 1, and remove the sensor plate by pushing it up from the bottom.
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) Remove the upper cover (see 3.3.1). (2) Open the manual feed guide assy 1, and release the engagement on both sides with the main unit by carefully bending the manual feed guide assy 1. Note: At the time of mounting, verify the proper the engagements as shown in the diagram.
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) Remove the upper cover (see 3.3.1). (2) Remove the lower base unit (see 3.3.7). (3) Press the clamp of the sensor plate (paper supply) 1, and remove it from the base plate 2.
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
Note: When replacing the Main Control PCB, the contents of the EEPROM shall be copied to the new PCB. This process requires a maintenance utility. (See 4.3.1 4 and 4.3.2 4 for details.)
The Main Control PCB is different for each model. OKIPAGE 6e : L5D OKIPAGE 6ex : L6A
(1) Remove the upper cover (see 3.3.1). (2) Remove the lower base unit (see 3.3.8). (3) Remove two screws 1. (4) Move the Main Control PCB 2 in the direction of arrow A to disconnect it from the power supply board 3. (5) Remove the Main Control PCB 2 together with the PCB guide plate 4 (disconnect the fan motor connector 5 from the Main Control PCB). (6) Remove three screws 6 and remove the PCB guide plate 4 from the Main Control PCB 2. Do not bend or lose ground plate 9.
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) Remove the upper cover (see 3.3.1). (2) Remove the lower base unit (see 3.3.7). (3) Remove the Main Control PCB (see 3.3.20). (4) Remove the AC inlet 1 from the inlet holder 2, and remove the connector 3 of the transformer. (5) Remove the screws 4, and remove the ground cable 5. (6) Remove three screws 6, and remove the power supply board 7 and contact assy 8 at the same time. (7) Unlock two claws 9, and remove the contact assy 8 from the power supply board 7. Note: When mounting the lower base unit, be careful about the paper end sensor. Do not apply excessive force to the power switch during reassembly.
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) Remove the upper cover (see 3.3.1). (2) Remove the lower base unit (see 3.3.7). (3) Remove the connectors (CN1 and CN2). (4) Remove the inlet 3 from the inlet holder 2. (5) Remove two screws 1, and remove the inlet holder 2 and the transformer 4.
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) Remove the paper cassette. (2) Remove the upper cover (see 3.3.1). (3) Remove the lower base unit (see 3.3.7). (4) Remove the Main Control PCB (see 3.3.20). (5) Remove the power supply board (see 3.3.21). (6) Remove the screw 1, and remove the cassette guide L 2 by shifting it in the direction of the arrow. (7) Detach the eject spring 3, and remove the support spring 4 from the cassette guide L 2.
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Service Guide OKIPAGE6e
Chapter 3 Parts Replacement
(1) Remove the paper cassette. (2) Remove the upper cover (see 3.3.1). (3) Remove the lower base unit (see 3.3.7). (4) Remove the Main Control PCB (see 3.3.20). (5) Remove the screw 1, and remove the cassette guide R 2 by shifting it in the direction of the arrow. (6) Pull the eject spring 3 out of the cassette guide R 2, then remove the support spring 4.
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Service Guide OKIPAGE6e
Chapter 4 Adjustment
The software Maintenance Utility for the OKIPAGE 6e is covered in Appendix D. How to Get the OKIPAGE 6e Maintenance Utility Program The Maintenance Utility Program for the OKIPAGE 6e can be obtained as listed below. Internet Web Site at www.okidata.com OKILINK II Bulletin Board Service at 1-800-283-5474 You will need the items / settings listed below. Asynchronous Communications Software set to
8 Data Bits No Parity 1 Stop Bit
Asynchronous Modem up to 9600 BPS w/error correction IBM Graphics/ANSI terminal emulation 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)
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Service Guide OKIPAGE6e
Chapter 4 Adjustment
This chapter describes the adjustment necessary when replacing a part. The Adjustment is made by changing the parameter value set in the EEPROM on the Main Control PCB. In the OKIPAGE 6ex, this is set by the key operation from the operator panel. This printer has three kinds of maintenance modes, and it is necessary to select one of the modes when replacing the part. In the OKIPAGE 6e, this is set using the software Maintenance Utility described in Appendix D. 4.2.1 Maintenance Modes and Functions User Maintenance Mode This mode is being released to end-users, but it is rarely accessed. To enter into the user maintenance mode, turn the POWER switch on while holding the MENU key down. Function There are following five functions:
Hex dump Drum counter reset Menu reset Operator panel menu disable X-adjust / Y-adjust
Detailed descriptions of these functions are provided in Appendix C, DIAGNOSTICS TEST. System Maintenance Mode Note: This mode is used only by service persons and it should not be released to the end-users. To enter into the system maintenance mode, turn the POWER switch on while holding the RECOVER key down. Function There are following five functions:
Page count display Page count printing enable/disable EEPROM reset Rolling ASCII continuous printing HIPER-W ENABLE/DISABLE SIDM ENABLE/DISABLE
Detailed descriptions of these functions are provided in Appendix C, DIAGNOSTICS TEST.
Engine Maintenance Mode Note: This mode is used only by service persons, and it should not be released to the end users. To enter into the engine maintenance mode, turn the POWER switch on while holding the FORM FEED and ENTER keys down. Function There are following functions :
Head drive time setting Drum count total display Printing start position setting Engine reset Drum count display Factory adjustment LED head width setting LED head type setting (Adjustment method for adjustment head) Transfer current setting Optical LED head (Mounting head type) Setting of strobe time Selection of standby temperature Engine test
Note: "Printing start position setting" is for shipping. Do not change its default value. Detailed descriptions of these functions are provided in Appendix C, DIAGNOSTICS TEST. 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)
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Service Guide OKIPAGE6e
Chapter 4 Adjustment
The following table lists parts that require adjustment after replacement. Parts LED head Required Adjustment LED head drive time LED head width Type of the LED head Drum counter reset (Refer to the user's manual for details.) Upload/Download EEPROM data
Image drum unit Control P.C.B.
LED Head Drive Time Setting Caution: Do not change the LED head drive time when the luminous energy indicated on the new LED head is the same as that of the old LED head. The LED head drive time is set in the LED Head Marking No. on the Engine Menu of the Maintenance Utility. Input the value printed on the serial No. label on the LED head. The last 3 digits indicates the luminous energy of the LED head. (See Fig. 4-2.) LED Head Luminous Energy
LED Head Width Setting
There are two types of LED head width. The type of the LED head is distinguished by the serial No. label on the head. Set the LED Head Width on the Engine Menu accordingly. (See Fig. 4-2).
How to distinguish LED head width
LED Head Type Setting There are two types of LED data wire: 1 wire type and 2 wires type. For this printer, 1 wire type is used. Select "Data wire 1 wire type" LED Head Wire on the Engine Menu. (See Fig. 4-2).
LED head data wire type
300-1W: Data wire 1 wire type 300-2W: Data wire 2 wires type Uploading/Downloading EEPROM data When the controller printed circuit board is replaced, the contents of the old EEPROM shall be copied to the new EEPROM on the new board to preserve customer settings. For the purpose, use the EEPROM operation on the Option of the Maintenance Utility. (See Appendix F.) To copy, follow the steps below. (1) Be sure to confirm that the printer and the PC are connected with a centronics I/F cable. Then execute the Maintenance Utility. (Note: Printer driver shall be deinstalled.) (2) Select the Option on the Maintenance Utility. (3) Click the "UPLOAD EEPROM" button on the "EEPROM Operations". (4) The contents of the EEPROM data is displayed on the "DIALOG" of the Maintenance Utility. The contents of the old EEPROM is now copied into the memory of the PC. (5) Replace the controller P.C.B. with a new one while it displays the above "DIALOG". (6) After the replacement, click "Download EEPROM" on the "EEPROM Operations". EEPROM upload has been completed. In case of troubles such as centronics I/F failure, etc. EEPROM data may not be uploaded properly. In such case, it is necessary to adjust the following settings manually after the replacement using the Maintenance Utility.
LED driver time (See 4.3.1 above.) LED head width setting (See 4.3.1 above.) LED head data wire type (See 4.3.1 above.) Factory setting (ODA/OEL/INT-A/INT-L)
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Service Guide OKIPAGE6e
Chapter 4 Adjustment
Adjustment is necessary when replacing any one of the following parts. Parts LED head Required Adjustment LED head drive time LED head width LED type Drum counter reset (Refer to the User's Manual.) EEPROM data Upload/Download (See 4.3.1 4.)
Image drum unit Main Control Board Setting of LED Head Drive Time
Note: When the luminous intensity marking of the replacement LED head (new part) is same as that of the removed LED head (old part), do not set the LED head drivetime. Luminous Intensity Marking Label
Setting of LED Head Drive Time (OKIPAGE6e)
Drive time of the LED head is set by setting the parameter of drive time of EEPROM according to the luminous intensity marking on the LED head. Luminous Intensity Marking and Drive Time Parameter Table Luminous intensity marking on LED head 056 ~ 062 063 ~ 065 066 ~ 069 070 ~ 076 077 ~ 082 083 ~ 088 089 ~ 096 097 ~ 104 105 ~ 112 113 ~ 121 122 ~ 131 Drive time parameter 34 33 32 31 30 29 28 27 26 25 24 Luminous intensity marking on LED head 132 ~ 142 143 ~ 154 155 ~ 167 168 ~ 180 181 ~ 195 196 ~ 211 212 ~ 228 229 ~ 247 248 ~ 268 269 ~ 290 291 ~ 313 Drive time parameter 23 22 21 20 19 18 17 16 15 14 13
Procedure Example: Method for setting the parameter to 19 (for case where the previous parameter setting was 21).
Setting of LED Head Drive Time (OKIPAGE 6ex) Drive time of the LED head is set by setting the parameter of drive time of EEPROM according to the
luminous intensity marking on the LED head. Luminous Intensity Marking and Drive Time Parameter Table Luminous intensity marking on LED head 027 ~ 028 029 ~ 030 031 ~ 032 033 ~ 035 036 ~ 037 038 ~ 040 041 ~ 043 044 ~ 046 047 ~ 049 050 ~ 052 053 ~ 057 058 ~ 060 061 ~ 064 Drive time parameter 27 26 25 24 23 22 21 20 19 18 17 16 15 Luminous intensity marking on LED head 065 ~ 069 070 ~ 073 074 ~ 079 080 ~ 084 085 ~ 090 091 ~ 096 097 ~ 103 104 ~ 110 111 ~ 118 119 ~ 126 127 ~ 135 136 ~ 144 145 ~ 154 Drive time parameter 14 13 12 11 10 9 8 7 6 5 4 3 2
Procedure Example: Method for setting the parameter to 19 (for case where the previous parameter setting was 8).
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Service Guide OKIPAGE6e
Chapter 5 Periodical Maintenance
The parts are to be replaced periodically as specified below: Part name Toner cartridge Image drum cartridge Condition for Cleaning replacement About 2,000 sheets of LED head. paper have been printed. About 20,000 sheets of paper have been printed. Remarks Consumables Consumables
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Service Guide OKIPAGE6e
Chapter 5 Periodical Maintenance
Remove any toner or dust accumulated inside the printer. Clean in and around the printer with a piece of cloth when necessary. Use the handy cleaner (vacuum) to clean inside the printer. Note: Do not touch the image drum, LED lens array, or LED head connector block. 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)
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Service Guide OKIPAGE6e
Chapter 5 Periodical Maintenance
Clean the LED lens array or replace the toner cartridge when white lines or stripes (void, light printing) are generated vertically down the page. Note: The LED lens array must be cleaned with an LED head cleaner, provided with each toner kit.
(1) Set the LED head cleaner to the LED lens array as shown in the figure, then slide the cleaner back and forth horizontally several times to clean the head. Note: Gently press the LED head cleaner onto the LED lens array.
(2) Throw the cleaner away. 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)
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Service Guide OKIPAGE6e
Chapter 6 Troubleshooting Procedures
6.1 Troubleshooting Tips (1) Check the basic check points covered in the user's manual. (2) Gather as much information about the problem from the customer as possible. (3) Inspect the equipment under the conditions close to those in which the problem had 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)
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Service Guide OKIPAGE6e
Chapter 6 Troubleshooting Procedures
(1) Is the printer being used in proper ambient conditions? (2) Are supplies (toner) and routine replacement parts (image drum unit) being replaced properly? (3) Does the paper being used meet specifications? (4) Is the image drum unit being loaded 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)
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Service Guide OKIPAGE6e
Chapter 6 Troubleshooting Procedures
(1) Do not touch, or bring foreign matter into contact with the surface of the image drum. (2) Do not expose the image drum to direct sunlight. (3) Keep hands away from the fuser unit as it heats up during operation. (4) Do not expose the image drum to light for longer than 5 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)
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Service Guide OKIPAGE6e
Chapter 6 Troubleshooting Procedures
PC Display (OKIPAGE 6e) The failure status of the printer is displayed by the display of the PC. Take proper corrective action as directed by messages which are being displayed on the display of the PC. There are 4 types of LED display status: On, Normal blinking, Fast blinking and Off. Type On Normal blinking Fast blinking Off Function On-line (Ready), Warming up Data receiving ~ Printing Recoverable alarm (paper end, cover open, etc.) Power off, Initializing, Unrecoverable alarm Remarks 0.5 sec. interval 0.12 sec. interval
Operator Panel Display (OKIPAGE 6ex) The failure status of the printer is displayed by the liquid crystal display (LCD) of the operator panel. Take proper corrective action as directed by messages which are being displayed on the LCD.
Status message display Ready LED display
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)
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Service Guide OKIPAGE6e
Chapter 6 Troubleshooting Procedures
Should there be a problem with the printer, troubleshoot according to the following procedure flow:
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)
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Service Guide OKIPAGE6e
Chapter 6 Troubleshooting Procedures
The status and problems which may be displayed by messages on the LCD or PC display are listed in Table 6-1 (OKIPAGE6e) and 6-2 (OKIPAGE6ex). PC Display Messages (Table 6-1) Category Controller errors PC display status message Controller Error Trouble or status An error occurred in the controller. Remedy
Normal operation cannot be
ensured. Turn the power off, then back on to restart. If normal operation is not recovered by this restart procedure, replace the Main Control PCB. Replace the Main Control PCB.
Program ROM Check An error was detected Error by program ROM check.
When replacing the Main
Control PCB, upload/download the EEPROM data. (Refer to 4.3.1-4.) Font ROM Check An error was detected Replace the Main Co