Page 1 OKIPAGE 8z LED Page Printer Service Handbook Oki Data 2000.6.30...
Page 2 PREFACE This Service Handbook describes the field maintenance procedures for the OKIPAGE 8z. This manual is written for use by service persons. Please note that you should refer to the Printer User's Manual for operating procedures.
Page 3: Table Of Contents
CONTENTS 1. CONFIGURATION ..................1 - 1 1.1 System Configuration ................ 1 - 1 1.2 Printer Configuration ................1 - 2 1.3 Option(OKIPAGE 8p Only) ..............1 - 3 1.4 Specification ..................1 - 4 1.5 Safety Standards ................1 - 6 1.5.1 Certification Label ..................
Page 4 Image Troubleshooting ................6 - 13 7. WIRING DIAGRAM ................... 7 - 1 7.1 (a)Interconnect Signal Diagram (OKIPAGE 8p) ........ 7 - 1 7.1 (b)Interconnect Signal Diagram (OKIPAGE 8z) ........ 7 - 2 7.2.1 Main Control board (NMA PCB)(OKIPAGE 8p) ........7 - 3 7.2.2...
Page 5: Configuration
CONFIGURATION...
Page 6: System Configuration
CONFIGURATION System Configuration The OKIPAGE 8z consists of a control block, a power supply unit, and an engine block. (See Figure 1-1.) ENGINE UNIT Paper Feed Mechanism Hopper Plate Electro-photographic Processor Main High-Voltage Power Supply Board Sub High-Voltage Main Control Board...
Page 7: Printer Configuration
Printer Configuration The printer unit consists of the following five hardware components: • Electro-Photographic Processor • Paper Feeder • Main Control Board • High-Voltage Power Supply Board (two Boards) • Power Supply Unit Figure 1-2 is the configuration of the printer unit. Upper Cover Assy EP Unit (Type 6) Top Cover Assy...
Page 8: Option(Okipage 8P Only)
Option (1) 4MB Option Memory Board 1 - 3...
Page 9: Specification
Specification (1) Type Desktop (2) Outside dimensions Height 5.9” (150 mm) (excludes protruding Width 12.2” (310 mm) portion) Depth 7.5” (191 mm) (3) Weight 3.8 kg (4) Development method Dry non-magnetic development system Exposure method LED stationary head (5) Paper used <Type>...
Page 10 In storage –10 to +43 ˚C 10 to 90% RH (relative humidity) No condensation is permissible. Caution: Temperature and humidity in storage are measured with the OKIPAGE 8z being packed; they are valid for one year. (13) Noise During operation:...
Page 11: Safety Standards
Safety Standards 1.5.1 Certification Label The safety certification label is affixed to the following location of the OKIPAGE 8z: 1.5.2 Warning Label Warning labels are affixed to the locations that may cause bodily injury. During maintenance, do work with enough care while following instructions on these warning labels.
Page 12: Operation Description
OPERATION DESCRIPTION...
Page 13 OPERATION DESCRIPTION The OKIPAGE 8z consists of a main control board, a high-voltage power supply board, a power supply unit, and an electro-photographic processor. The OKIPAGE 8z receives print data from a higher-level interface and sequentially stores it in memory. The OKIPAGE 8z decodes and edits the received data while storing print data from the interface in memory.
Page 14 Data Bus 1M x 16 (x 16) Address Bus DRAM 4MB LS07 10MHz 7MHz HC244 LC26023A +26V+5V 0V 0VP POWER HIVOL HIVOL2 High Voltage Power Unit High Voltage Power Unit Power Supply Unit (Main) (Sub) Figure 2-1 Block Diagram (OKIPAGE 8z)
Page 15: Main Control Board
LED head, a main motor, and an electromagnetic clutch. (1) One-chip CPU • OKIPAGE 8z The one-chip CPU is a custom CPU (8-bit internal bus, 8-bit external bus, 16-MHz clock) incorporating mask ROM and CPU peripheral devices. This CPU has the functions listed in the table below.
Page 16 (2) Program ROM Program ROM contains a program for the equipment. EPROM is used as program ROM. When mask ROM in the one-chip CPU explained in (1) above is valid, the EPROM is not mounted. (For details on short wiring setting, see Section 7.2.) (3) DRAM DRAM is used as resident memory.
Page 17: Power Supply Unit
Power Supply Unit The power supply unit supplies +5 V and +26 V to the main control board according to 230 VAC / 120 VAC. Output voltage Application +5 V Used to generate a logic circuit and a high voltage. +26V Used to drive the motor and electromagnetic clutch.
Page 18 (2) Sensors The high-voltage power supply board consists of the high-voltage power supply circuit that supplies power to the electro-photographic processor system and the photosensor that detects a paper feeding system and toners. Figure 2-2 shows the sensor layout drawing. Exit roller Outlet sensor Heat roller...
Page 19: Electro-Photographic Processor
Electro-Photographic Processor The electro-photographic processor prints out the image data to be sent from the main control board on sheets of paper. Figure 2-3 shows the layout drawing of the electro-photographic processor. (1) Image drum unit The image drum unit makes a toner adhere to the formed electrostatic latent image with static electricity.
Page 20 2 - 8...
Page 21 (3) Pulse motor (Main) This pulse motor of 48 steps/rotation is two-phase excited by the signal from the main control board; it performs feeding control by switching normal rotation to reverse rotation or vice versa and turning on/off the electromagnetic clutch. The relationship between the main motor, electromagnetic clutch, resist gear, drum gear, hopping roller is shown in the table below and on the subsequent pages.
Page 22 2 - 10...
Page 23: Electro-Photographic Process
Electro-Photographic Process (1) Electro-photographic process The electro-photographic process is outlined below. 1 Charging The surface of the OPC drum is charged negatively and uniformly by applying the DC voltage to the CH roller. 2 Exposure Light emitted from the LED head irradiates the negatively charged surface of the OPC drum.
Page 24 2 - 12...
Page 25: Explanation Of Each Process Operation
2.5.1 Explanation of Each Process Operation (1) Hopping As shown in the figure below, the clutch for hopping is turned on/off according to current ON/ OFF to a coil. When the clutch is OFF Spring for resetting Clutch plate Hopping gear Coil Magnetic substance plate...
Page 26 (2) Printing and warm-up At warm-up Triple gear Transfer gear Regist gear Idle gear Planetary gear a" Hopping gear Gear A Pulse motor (main) Rotate the pulse motor (main) in the a direction. The planetary gear rotates in the a’ direction, dislocating its position in the a”...
Page 27 (3) Charging Charging is performed by applying DC voltage to the charge roller that is in contact with the surface of the OPC drum. High- voltage Charge roller power supply OPC drum (4) Exposure Light emitted from the LED head irradiates the negatively charged surface of the OPC drum. The surface potential of the irradiated surface attenuates to form the electrostatic latent image corresponding to the image signal.
Page 28 (5) Development The electrostatic latent image on the surface of the OPC drum is changed to a visible toner image by applying a toner to it. Development is performed in the contact part between the OPC drum and developing roller. 1 The sponge roller negatively charges a toner and applies it to the developing roller.
Page 29 (6) Transfer The transfer roller is composed of conductive sponge material. This roller is set so that the surface of the OPC drum and sheets of paper will adhere closely. A sheet of paper is placed on the surface of the OPC drum and the positive charge opposite to the negative charge of a toner is applied from the reverse side by the transfer roller.
Page 30 (7) Fusing The transferred unfused toner image is fused to a sheet of paper because heat and pressure are applied when it passes between the heat roller and back-up roller. The Teflon-coated heat roller contains a 400 W heater (Halogen lamp) that heats the heat roller.
Page 31: Paper Jam Detection
Paper Jam Detection The OKIPAGE 8z monitors the paper status when the power supply is on and during printing. In the following cases, the OKIPAGE 8z interrupts the printing process as a paper jam. Printing can be recovered by opening the cover, removing the jammed paper, and closing the cover.
Page 32 Normal rotation Pulse motor (main) Reverse rotation Electromagnetic clutch Manual feed sensor Paper sensor Outlet sensor Warm-up Paper feed Printing Operation mode Timing Chart for Paper Feed (Tray Feed) 2 - 20...
Page 33: Toner Low Detection
Toner Low Detection • Hardware configuration of toner sensor The figure below shows the hardware configuration of the toner sensor. Image drum unit Agitation bar (iron) Magnet Toner sensor lever Hardware Configuration of Toner Sensor • Toner detection method (1) Toner sensor monitoring conditions are shown in the figure below. Toner sensor Magnet draw-in Caution: The toner sensor is not monitored when the drum is inactive.
Page 34: Cover Open
(2) The basic rotation cycle of the toner sensor is as follows: T time Basic rotation cycle of toner sensor 2.5 sec. Toner low time t1 > 0.6 sec. Toner full time 0.6 sec. > t1 > 0.14 sec. Cover Open Opening the stacker cover turns off the microswitch on the high-voltage power supply board to suspend +5 V supply to the high voltage power supply.
Page 35: Detecting Id Existence
Detecting ID existence In this model, a micro switch may be activated, applying a high voltage to the machine under a state where the cover is slightly opened. In this case, there is a fear that, when a user insert his hand through the opening, he may be shocked unless an ID has been installed.
Page 36 Abnormal toner sensor Other cases waveform ID not Installed POWER ON displayed/informed Cover open/close Abnormal toner sensor waveform Status_A Status_B Normal Normal Cover open/close Abnormal toner sensor waveform Cover open/close Normal toner sensor waveform Toner Sensor Error di ON LINE splayed/informed Normal printing Abnormal toner sensor waveform...
Page 37 2 - 25...
Page 38: Parts Replacement
PARTS REPLACEMENT...
Page 39: Precautions For Parts Replacement
PARTS REPLACEMENT This chapter explains how to replace parts, assemblies, and units in the field. The replacement procedures to be explained here include dismounting, not mounting. When mounting parts, assemblies, and units, reverse the dismounting steps. Precautions for Parts Replacement (1) Be sure to dismount the AC cord and interface cable before replacing parts.
Page 40 [Maintenance Tools] Table 3-1 lists the maintenance tools necessary for parts replacement. Table 3-1 Maintenance Tools Maintenance Tools Q'ty Remarks No. 1-100 Philips 2~2.5 mm screw screwdriver No. 2-100 Philips 3~5 mm screw screwdriver No. 3-100 Philips screwdriver No. 5-200 screwdriver Digital multimeter (tester) Pliers Handy cleaner...
Page 41: Parts Layout
Parts Layout This section explains the layout of main parts. [Upper Cover Assy] Spur gear (A) Guide side (R) Guide side (L) Hopper plate Upper cover Figure 3-1 3 - 3...
Page 42: Base Frame Unit
[Base Frame Unit] LED head Flat cable assy Head spring Top cover assy Pressure roller (B) (Back up roller) Heat assy Paper guide (R) Transfer roller Paper guide (L) Registration roller Side plate M Idle gear heat Paper Hopper holder spring Drive shaft E (eject) Tension plate...
Page 43 [Base Plate Unit](OKIPAGE 8p) Power supply unit Main control board High Voltage Power Supply board P6L Base plate assy Figure 3-3-1 3 - 5...
Page 44 [Base Plate Unit](OKIPAGE 8z) Power supply unit Main control board High Voltage Power Supply board P6L Base plate assy Figure 3-3-2 3 - 6...
Page 45: Replacing Parts
Replacing Parts This section explains how to replace parts and assemblies. 3.3.1 Hopper Plate (1) Remove two claws and dismount hopper plate 1. 3 - 7...
Page 46: Led Head And Head Spring
3.3.2 LED Head and Head Spring (1) Open top cover assy 1. (2) Dismount the left clamp and LED head 2. Then, dismount flat cable assy 3. (3) Dismount two head springs 4. 3 - 8...
Page 47: Transfer Roller
3.3.3 Transfer Roller (1) Open top cover assy 1 and dismount EP unit (Type 6) 2. (2) Remove the right claw. Then, dismount transfer roller 3, two regist bearings 4, and gear Label 3 - 9...
Page 48: Upper Cover Assy
3.3.4 Upper Cover Assy (1) Turn off the power switch and unplug the AC cord from the AC socket. (2) Disconnect interface cable 1. (3) Open top cover assy 2 and dismount EP unit (Type 6) 3. (4) Move paper guide (L) 4 and paper guide (R) 5 on the rear of the printer to the center. (5) Remove two front claws of upper cover assy 6 and lift upper cover assy 6.
Page 49: High-Voltage Power Supply Board (P2H/ P6L)
3.3.5 High-Voltage Power Supply Board (P2H/ P6L) (1) Dismount upper cover assy. (See Section 3.3.4.) (2) Remove three screws 1 and remove the cover 2 and draw out high-voltage power supply board 3. (3) Disconnect all the cables 4 from high-voltage power supply board 3 and dismount high- voltage power supply board 3.
Page 50: Top Cover Assy And Flat Cable Assy
3.3.6 Top Cover Assy and Flat Cable Assy (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount the LED head. (See Section 3.3.2.) (3) Press the left clamp outward and dismount the engagement and top cover assy 1. (Tension spring 2 also comes off at the same time.) (4) Disconnect connector CN6 and dismount flat cable assy 3.
Page 51: Paper Holder
3.3.7 Paper Holder (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount paper holder 1. (3) Unlock and dismount paper guide (L) 2 and paper guide (R) 3. (4) Remove the claw and dismount hopper spring 4. (5) Remove the claw and dismount stopper spring 5. 3 - 13...
Page 52: Side Plate M And Idle Gear
3.3.8 Side Plate M and Idle Gear Perform parts replacement while making the base frame assy stand so that side plate M will face upward. (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Remove two screws 1 and two claws, then dismount plate side M2. (3) Dismount earth plate 3, two idle gears P 4, idle gear M5, idle gear 3R6, idle gear 2R7, idle gear heat 8, idle gear R 9 and Gear R 0.
Page 53: Heat Assy
3.3.9 Heat Assy This section explains how to dismount the heat assy and parts in the assy. <Dismounting the heat assy> (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount the high-voltage power supply board. (See Section 3.3.5.) (3) Remove two screws 1, disconnect connector 2, and dismount heat assy 3.
Page 54 3 - 16...
Page 55 Voltage display side 3 - 17...
Page 56: 3.3.10 Drive Shaft E (Eject) And Eject Roller
3.3.10 Drive Shaft E (Eject) and Eject Roller (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount top cover assy. (See Section 3.3.6.) (3) Remove two screws 1 from heat assy (Section3.3.9), life the heat assy, and dismount idle gear E (A) 2 and idle gear E (B) 3.
Page 57: Pressure Roller B (Back Up Roller)
3.3.11 Pressure Roller B (Back Up Roller) (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount the high-voltage power supply board. (See Section 3.3.5.) (3) Dismount the heat assy. (See Section 3.3.9.) (4) Dismount the engagement with the left ground, then pressure roller B1. (Two bearing BUs 2 and two bias springs 3 also come off at the same time.) 3 - 19...
Page 58: 3.3.12 Separator Guide
3.3.12 Separator Guide (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount the high-voltage power supply board. (See Section 3.3.5.) (3) Remove four screws 1. (4) Dismount inlet 2 from base frame 3. <Dismounting inlet 2> Insert a screwdriver into the hole on the side of base frame 3, remove the inlet claw from base frame 8, and dismount inlet 2.
Page 59 <Dismount Inlet> Screw driver <Disconnecting Connector> (-) Screw driver Clamp lever <Disconnecting Connector> OKIPAGE 8p 3 - 21...
Page 60 <Dismount Inlet> Screw driver <Disconnecting Connector> (-) Screw driver Clamp lever <Disconnecting Connector> OKIPAGE 8z 3 - 22...
Page 61: Pulse Motor (Main)
3.3.13 Pulse Motor (Main) (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount the high-voltage power supply board. (See Section 3.3.5.) (3) Dismount side plate M. (See Section 3.3.8.) (4) Dismount the base frame. (See Section 3.3.12.) (5) Remove two screws 1 and dismount pulse motor (main) 2. 3 - 23...
Page 62: 3.3.14 Hopping Shaft Assy
3.3.14 Hopping Shaft Assy (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount the high-voltage power supply board. (See Section 3.3.5.) (3) Dismount the base frame. (See Section 3.3.12.) (4) Dismount the paper holder assy. (See Section 3.3.7.) (5) Dismount the sheet guide.
Page 63: 3.3.15 Resist Roller
3.3.15 Resist Roller (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount Idle gear R 3 and Gear R 4. (3) Move resist roller 1 to the right and dismount it by lifting. (Two resist bearings 2 also come off at the same time.
Page 64: 3.3.16 Paper Sensor E, Paper Sensor Exit And Toner Sensor Assy
3.3.16 Paper Sensor E, Paper Sensor Exit and Toner Sensor Assy (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount the high-voltage power supply board. (See Section 3.3.5.) (3) Dismount the base frame. (See Section 3.3.12.) (4) Dismount the paper holder assy. (See Section 3.3.7.) (5) Dismount the sheet guide.
Page 65: 3.3.17 Base Plate
3.3.17 Base Plate (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount the base frame. (See Section 3.3.12.) (3) Remove two screws 1, disconnect connector 2, and dismount power supply unit 3. (4) Dismount insulation sheet 4. (5) Remove five screws 5 and dismount main control board 6. (6) Remove screw 7 , disconnect connector 8 and dismount P6L board 9 from base plate 0.
Page 66 OKIPAGE 8z 3 - 28...
Page 67: Adjustment
ADJUSTMENT...
Page 68: Adjustment Types And Functions
ADJUSTMENT This chapter explains adjustment necessary when a part is replaced. This adjustment is made by changing the parameters values set in EEPROM on the main control board. The printer driver or maintenance utility can be used to change these values. Only servicemen and maintenance personnel can use the maintenance utility.
Page 69: Engine Maintenance Utility
Part to be Replaced Adjustment Set the LED head drive time. LED head Set the LED head dot count. (OKIPAGE 8z only) EP unit Reset the drum counter. (Refer to "User's Manual".) Main control board Upload or download EEPROM data.
Page 70: Uploading And Downloading Eeprom Data
In such a case, use the maintenance utility to perform the following adjustment after replacing the main control board: • Setting the LED head drive time (Section 4.2.1) • Setting the LED head count (OKIPAGE 8z only) • Setting specifications (ODA/OEL/INT-A/INT-L) 4 - 3...
Page 71: Periodical Maintenance
PERIODICAL MAINTENANCE...
Page 72: Periodical Replacement Parts
PERIODICAL MAINTENANCE Periodical Replacement Parts Table 5-1 lists the part and unit to be replaced periodically. Table 5-1 Routine Replacement Parts Part to be Checked Part Name Replacement Time Remarks Simultaneously Toner cartridge (Type 6) When "Toner Low" is displayed. LED head Consumables EP unit (Type 6)
Page 73 (1) Set the LED head cleaner in the LED lens array, as shown in the figure below, and slide the cleaner left and right several time to clean the head. Caution: Do not press the LED head cleaner against the LED lens array. LED lens array LED head cleaner Figure 5-2...
Page 74: Troubleshooting Procedures
TROUBLESHOOTING PROCEDURES...
Page 75: Troubleshooting Tips
The failure status of the OKIPAGE 4w Plus /4m is displayed on the status monitor of the PC. Take proper action according to the message displayed on the status monitor. (2) LED display The OKIPAGE 8z is equipped with only one LED. This LED indicates one of the following statuss: Printer Status...
Page 76: Led Functions
LED Functions Status Error (red) Ready (amber) Remark Manual Feed (amber) Ready Undefined Printing contents of buffer by pressing During suspending data pro- Undefined Flash 1 switch two seconds. cessing (in OFF-LINE) Clearing buffer by pressing switch five (Data is left in the buffer) seconds.
Page 77: Troubleshooting
Troubleshooting If a trouble occurs in the OKIPAGE 8z, troubleshoot according to the following procedures: Trouble Perform detailed Troubleshoot according to Trouble indicated by troubleshooting according "Status Monitor Message List" the message displayed to the troubleshooting flow. (See Section 6.5.1.) on the status monitor.
Page 78 Table 6-1 Status Category Status Message Display Content Remedy Code Normal status Warming Up 18 00 Warming-up status Normal operation 00 10 Online (ready) status Online (Ready) Normal operation Power Save Mode 00 20 Power save status Normal operation 10 00 The toner amount of the toner cartridge is small.
Page 79 Table 6-1 (Cont'd) Status Category Status Message Display Content Remedy Code Paper size error Paper Size Error 30 00 Paper of improper size was fed. Check the paper. Also check whether more than one sheet of 2.52" (64 mm) L 15.77" (400.56 mm) paper were fed simultaneously.
Page 80 Table 6-1 (Cont'd) Status Status Category Category Status Message Status Message Display Content Display Content Remedy Remedy Code Code Device configuration error EEPROM Check Error 60 40 An error occurred during EEPROM check. Replace the main control board. (When replacing the main control board, also adjust EEPROM data.) (See Section 4.2.4.) Option RAM Check Error 60 60...
Page 81: Status Message Troubleshooting
Some failures cannot be corrected according to the status message trouble list. Troubleshoot these failures according to the following troubleshooting flowcharts: Flowchart No. Item The OKIPAGE 8z malfunctions after the power supply has been turned on. Jam error Paper input jam Paper feed jam...
Page 82: The Okipage 8Z Malfunctions After The Power Supply Has Been Turned On
The OKIPAGE 8z malfunctions after the power supply has been turned on. • Turn the power supply off, then on again. • Is the LED lamp on? • No Is the AC cable connected correctly? • No Connect the AC cable correctly.
Page 83: Jam Error
[JAM error] Paper input jam • Does a paper input jam occur when the power supply is turned on? • Yes Is the jammed paper on paper sensor E? • Yes Remove the jammed paper. • No Is paper sensor E (manual feed/paper) operating normally? •...
Page 84: Paper Feed Jam
[JAM error] Paper feed jam • Does a paper feed jam occur when the power supply is turned on? • Yes Is the jammed paper on paper sensor E (paper/exit)? • Yes Remove the jammed paper. • No Is paper sensor E (exit/paper) operating normally? •...
Page 85: Paper Size Error
Paper size error • Is the paper of the specified size being use? • No Use paper of the specified size. • Yes Is paper sensor E (paper) operating normally? • No Replace paper sensor E (paper) or clean the inlet sensor on the high-voltage power supply board.
Page 86 Heat assy error • Turn the power supply off, then on again. • Does the Halogen lamp of the heat assy go on? • No Is the Halogen lamp or thermostat disconnected? • Yes Replace the heat assy, Halogen lamp, or thermostat. •...
Page 87: Image Troubleshooting
6.5.3 Image Troubleshooting This section explains how to troubleshoot when an image problem is output as a result of the printing. Figure 6-3 is an example of image problem output. Symptom Flowchart No. An image is light or blurred entirely. (Figure 6-3, A ) Dark background density (Figure 6-3, B ) A blank paper is output.
Page 88 An image is light or blurred entirely. • Is the toner low? (Is "Toner Low" being displayed?) • Yes Supply a toner. • No Is the specified paper being used? • No Use the specified paper. • Yes Is the lens of the LED head dirty? •...
Page 89: Dark Background Density
Dark background density • Has the OPC drum being exposed to external light? • Yes Set the OPC drum in the OKIPAGE 8z and wait for about 30 minutes. • No Is the heat roller of the heat assy dirty? •...
Page 90: Cyclic Defect
Vertical black belt/stripe • Replace the EP unit. • Has this error been recovered? • Yes Caution: After replacing the EP unit, reset the drum counter. (Refer to "Replacing the Drum Cartridge" in "User's Manual".) • No Replace the LED head. •...
Page 91 A blank paper is output. • Is the contact plate of the transfer roller in correct contact with the high-voltage power supply board? • No Contact the contact plate of the transfer roller correctly. • Yes Replace the transfer roller. •...
Page 92: Poor Fusing
Poor fusing • Is the specified paper being used? • No Use the specified paper. (xerox 4200 (20 lbs)) • Yes Is the bias spring normal? (Tension: 3.25 kg) • No Replace the bias spring. • Yes Are the heater connector of the heat assy and the CN1 connector of the power supply unit connected correctly.
Page 93 Vertical white belt/spripe • Is the lens of the LED head dirty? • Yes Clean the LED head. • No Is the contact plate of the transfer roller in correct contact with the high-voltage power supply board? (See Figure 6-5 E .) •...
Page 94 Contents A : Toner Supply Roller B : Developing Roller C : Charge Roller D : Cleaning Roller E : Transfer Roller F : Heat Roller Figure 6-4 6 - 20...
Page 95 Contents A : Toner Supply Roller B : Developing Roller C : Charge Roller D : Cleaning Roller E : Ground (Drum) Figure 6-5 6 - 21...
Page 96: Wiring Diagram
WIRING DIAGRAM...
Page 97: A)Interconnect Signal Diagram (Okipage 8P)
Interconnect Signal Diagram (OKIPAGE 8z) 7 - 1...
Page 98 PCB Layout 7.2.2 Main Control Board( U8S PCB) PCB-U8S PCB-U8S CN 7 CN 7 CN 4 CN 4 JAPAN CN 1 CN 1...
Page 99 7.2.3 High-Voltage Power Supply Board CVSW 7 - 3...
Page 100 PARTS LIST...
Page 101 PARTS LIST Figure 8-1 Cover Assy Upper 8 - 1...
Page 102 Table 8-1 Cover Assy Upper Part Name Part No. Q'ty Remarks Cover-Upper 40412501 OKIPAGE 8p Cover-Upper 40412601 OKIPAGE 8z Lens 1 40413101 OKIPAGE 8p Lens 2 40413201 OKIPAGE 8z Switch 40413001 OKIPAGE 8p Guide Side (L) 2PP4128-1256P1 Guide Slide (R)
Page 103 Figure 8-2 Base Frame Unit 8 - 3...
Page 104 Table 8-2 Base Frame Unit Part Name Part No. Q'ty Remarks Frame Unit Assy 40593201 High-Voltage Power Supply Board P3H 41226501 Paper Sensor E 3PP4083-1191P1 Separator Assy 40721301 Compression Spring S 4PP4083-1246P1 Toner Sensor Assy 3PA4083-1193G1 Pulse Motor 40496401 Ep Unit (Type 6) Consumable Toner Cartridge Unit (Type 6) Consumable...
Page 105 4PP4083-1247P1 Top Cover Assy 40592101 OKIPAGE 8p (OEL) Top Cover Assy 40592102 OKIPAGE 8w (OEL) Top Cover Assy 40592116 OKIPAGE 8z (ODA) Head Spring 4PP4083-6168P1 56112101 LED Head Flat Cable Assy 41016102 Bias Spring (R) (Back Up Roller) 4PP4083-1137P1 Sheet Guide...
Page 106 Figure 8-3 Heat Assy 8 - 6...
Page 107 Table 8-3 Heat Assy Part Name Part No. Q'ty Remarks Heat Roller 3PB4083-1202P1 Halogen Lamp 40649301 120V Halogen Lamp 40649302 230V Thermostat 4PB4083-1204P1 Thermistor 4PB4083-1205P1 Heat Cord 4PB4083-1213P1 8 - 7...
Page 108 Figure 8-4-2 Base Plate Unit (OKIPAGE 8z) 8 - 8...
Page 109: Main Control Board (Nma Pcb)(Okipage 8P)
Table 8-4 Base Plate Unit Part Name Part No. Q'ty Remarks Base Plate Assy 40592201 Insulation Sheet A 40722501 Power Supply Unit 4YB4049-1853P1 120V Power Supply Unit 4YB4049-1854P1 230V Main Control Board 41222702 For OP 8z (U8S-) Main Control Board 40433802 For OP 8p (HBY-)
Page 110 APPENDIX...
Page 111: Appendixa Local Printing
Appendix A LOCAL PRINTING (1) The following operation enables the OKIPAGE 8z to print data by itselt. <Operation> With the cover open, turn on the AC switch and then close the cover. The following print patterns are printed. A - 1...
Page 112: Appendixb Parallel Interface
Appendix B PARALLEL INTERFACE (1) Connector • Printer side : 36-pin receptacle Type: 57RE-40360-730B-D29A (Daiichi Denshi) or equivalent • Cable side : 36-pin plug Type: 57-30360 (Daiichi Denshi) or equivalent (2) Cable • Cable length : 6 feet (1.8 m) max. (IEEE std 1284-1994 compliant is recommended for noise prevention.) B - 1...
Page 113 DATA BIT - 7 DATA BIT - 8 ← PR ACKNOWLEDGE Completion of input data reception ← PR BUSY The OKIPAGE 8z is not ready to receive data. ← PR PAPER END Paper end detection ← PR SELECT Select state (Online) →...
Page 114 (4) Signal level • LOW : 0 V to +0.8 V • HIGH : +2.4 V to 5.0 V (5) Interface circuit • 8z a) Receiving circuit R = 3.3KΩ (1.0-KΩ STROBE) R = 3.3KΩ (1.0-KΩ STROBE) b) Sending circuit b) Sending circuit (Open Collector) 3.3KΩ...
Page 115 6 7 4 5 2 3 6 7 4 5 2 3 . , - * + & ' . $ , - " * + c) Data sending timing (nibble mode) ACKNOWLEDGE BUSY DATA bit 3 DATA bit 7 FAULT DATA bit 0 DATA bit 4...
Page 116: Appendix C Maintenance Utility
Appendix C MAINTENANCE UTILITY OUTLINE OF MAINTENANCE UTILITY The maintenance utility is an application program that operates on Microsoft Windows 3.1 or higher. The maintenance utility has the following functions: • Transmission of menu setting command to initialize and change setting values •...
Page 117: Detail Of Each Function
DETAIL OF EACH FUNCTION Engine Menu Setting Engine Menu Setting is used to set, display, and change the following menu items: (See Figure D-1.) (1) Print Position Used to adjust the print start position. (2) LED Head Marking No. Used to adjust the exposure time of the LED head. (3) LED Head Width Used to specify the LED head dot count.
Page 118: Printer Status
(1) Drum Count Number of revolutions of mounted EP drum (2) Total Drum Count Total number of revolutions of EP drum after shipment (3) Page Count Total number of printed pages after shipment clicking the "Reset" button cleans each counter. (4) Reset All Used to clear all counters.
Page 119 About About is used to display the following information: Engine maintenance utility version information Printer version information and memory size information Printer device ID information See figure C-4. Reload Reload is used to reload menu setting values. Exit Clicking the Exit button terminates the maintenance utility. C - 4...
Page 120 <Engine Maintenance Driver GUI> Figure C-1 Main Menu Dialog Figure C-2 Test Print Dialog C - 5...
Page 121 Figure C-3 Option Menu Dialog C - 6...
Page 122 Figure C-4 About Dialog C - 7...
Page 123 Universal Serial Bus (USB) Universal Serial Bus Specification Revision 1.0 compliance. Connector ⋅ Printer Side : “B” Receptacle (Upstream Input to the USB Device) ⋅ Cable Side : Serise “B” Plug Cable ⋅ Cable Length : Max 5 m (A cable must be met USB Spec Rev 1.1 for normal operation) Note: Cable is not supplied.
Page 124 Signal Level ⋅ Input / Output Level Parameter Symbol Min. Max. Units Input Levels: High(driven) High(floating) Output Levels: High(driven) Output Signal Crossover Voltage ⋅ Signaling Levels Signaling Levels Bus State Required Acceptable Differential ”1” (D+)-(D-)> 200mV and D+ > (D+)-(D-)> 200mV (min) Differential ”0”...
Page 125 10) Timing Chart a) Packet Voltage Levels VOH(min) VIH(min) VIL(max) VOL(max) Bus Driven to Bus Idle Last Bit J State at end First Bit of Packet of EOP of Packet Portion Bus Floats of EOP Bus Idle VOH(min) VIH(min) VIL(max) VOL(max) b) Disconnect Detection D+/D-...
Page 126 d) Differential Data Jitter TPERIOD Crossover Points Differential Data Lines (VCRS) Conesecutive TPERIOD = 12Mbps( ± 0.25%) Transitions TPERIOD + TxDJ1 TxDJ1 Min-3.5ns~Max3.5ns TxDJ2 = Min-4ns~Max4ns Paired Transitions TPERIOD + TxDJ2 e) Differential-to-EOP Transition Skew and EOP Width Crossover Point Extended TPERIOD Crossover...
Page 127 Oki Data Corporation 4-11-22, Shibaura, Minato-ku, Tokyo 108, Japan Tel: (03) 5445-6162 Fax: (03) 5445-6189 XXXXXXXXTH...

This manual is also suitable for:

Okipage 8w

Oki OKIPAGE 8z Service Handbook

1 Configuration

2 Operation Description

3 Parts Replacement

4 Adjustment

5 Periodical Maintenance

6 Troubleshooting Procedures

7 Wiring Diagram

8 Parts List

Appendixa Local Printing

Appendix A Local Printing

Appendixb Parallel Interface

Appendix C Maintenance Utility

Quick Links

Troubleshooting

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Summary of Contents for Oki OKIPAGE 8z

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Table of Contents