Oki C8800 Maintenance Manual
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Oki C8800 Maintenance Manual

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See also: User Manual , Setup Manual
C8800
Maintenance Manual
072007A
Oki Data CONFIDENTIAL

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Summary of Contents for Oki C8800

  • Page 1 C8800 Maintenance Manual 072007A Oki Data CONFIDENTIAL...
  • Page 2 Oki Data CONFIDENTIAL Document Revision History Corrected items Person in Rev.No. Date charge Page Description of change 2007-01-22 Issue MD3 Wakana 2007-04-23 Substantial change MD3 Matsumoto 43170003TH Rev.2...
  • Page 3 • Despite that exhaustive efforts were made in preparing the manual to make it accurate, it still may contain errors. Oki Data will not hold itself liable for any damage that results or is claimed to have resulted from repair, adjustment, or modification of the printer conducted by the user using this manual.

  • Page 4: Table Of Contents

    Oki Data CONFIDENTIAL ContEnts 1. ConFIGURAtIon ....................7 System configuration ......................7 Printer configuration ......................9 Composition of optional items ..................... 11 Specifications ........................12 Interface specifications .......................15 1.5.1 USB interface specifications ..................15 1.5.1.1 Outline of USB interface .................15 1.5.1.2 USB interface connectors and cables ............15 1.5.1.3...
  • Page 5 Setup of EEPROM after replacement of CU PCB ..........182 5.4.2.2 Setup of CU Serial Number ..............182 5.4.2.1 Replacement of EEPROM after replacement of PDL CU PCB(C8800) 182 5.4.3 Setup of destination .....................183 About the manual setup of Print density adjustment............184 6.
  • Page 6 Oki Data CONFIDENTIAL 7. tRoUBLEsHootInG PRoCEDUREs ............188 Precautions prior to repair ....................188 Items to be checked prior to taking action on abnormal images ........188 Precautions when taking action on abnormal images ............188 Preparations for troubleshooting ..................188 Troubleshooting method ....................188 7.5.1 LCD Message List ....................189...

  • Page 7: Configuration

    Oki Data CONFIDENTIAL CONFIGURATION System configuration Figure 1-1 represents the system configuration of the printer. Figure 1-1 43170003TH Rev.2...
  • Page 8 Oki Data CONFIDENTIAL C8800 Figure 1-1(C8800) represents the system configuration of the printer. Figure 1-1(C8800) 43170003TH Rev.2...

  • Page 9: Printer Configuration

    Oki Data CONFIDENTIAL Printer configuration The internal part of the printer is composed of the following sections: • Electrophotographic processing section • Paper paths • Control sections (CU sect./PU sect.) • Operator panel • Power supply sections (High-voltage sect./low-voltage sect.) Figure 1-2-1 represents the configuration of the printer.
  • Page 10 Oki Data CONFIDENTIAL The internal part of the C8800 printer is composed of the following sections: • Electrophotographic processing section • Paper paths • Control sections (CU sect./PU sect.) • Operator panel • Power supply sections (High-voltage sect./low-voltage sect.) Figure 1-2-2 represents the configuration of the printer.

  • Page 11: Composition Of Optional Items

    For long printing, it is recommended to add an expansion memory. * Not compatible with the expansion memo- ries for . (4) Hard disk (C8800) Note! Hard disks for C8800 are incompatible with those for C500. 11 / 43170003TH Rev.2...

  • Page 12: Specifications

    Oki Data CONFIDENTIAL Specifications Division Item C8800 External Width 485mm dimensions Depth 556mm Height 341mm Mass Approx. 40kg Print width Print width A4 (Landscape) Engine speed Monochrome 32ppm (A4 LEF) Color 26ppm First print time Monochrome .5 sec (A4 LEF)
  • Page 13 Oki Data CONFIDENTIAL Division Item C8800 Service life Printer life 600,000 pages, 5 years Print duty Max. 50,000 pages / mo. Average 10,000 pages / mo. (M=L/12, A=L/12/5) MTBF(2.3% duty) Not applicable MPBF 100,000 pages MTTR 20 minutes Toner life Starter toner Approx.
  • Page 14 Oki Data CONFIDENTIAL Division Item C8800 Operator panel 16 characters in 2 line (Roman alphabet/Japanese kana) No paper size indicated LED (Color) Two (Green x1, dark amber x1) Switch Status switch/ Paper out Provided sensor Paper low Not provided Toner low...

  • Page 15: Interface Specifications

    Oki Data CONFIDENTIAL Interface specifications 1.5.1 USB interface specifications 1.5.1.1 Outline of USB interface (1) Basic specifications USB (Hi-Speed USB supported) (2) Transmission mode Full speed (Max. 12Mbps ± 0.25%) High speed (Max.480Mbps ± 0.05%) (3) Power control Self power device 1.5.1.2 USB interface connectors and cables...

  • Page 16: Network Interface Specifications

    Oki Data CONFIDENTIAL 1.5.2 Network interface specifications 1.5.2.1 Outline of network interface 1.5.2 Basic specifications of network interface Protocol family Network protocol Application TCP/IP IPv4, TCP, ICMP, ARP, UDP LPR, RAW, IPP, FTP, Telenet SNMPv1 DHCP/BOOTP UPnP Rendezvous SNTP 1.5.2.2 Network interface connectors and cables...

  • Page 17: Parallel Interface Specifications

    Oki Data CONFIDENTIAL 1.5.3 Parallel interface specifications 1.5.3.1 Parallel Interface Overview Item Details Corresponding mode Comatible mode, nibble mode, ECP mode Data bit length Compatible: 8, Nibble: 4, ECP:  bit 1.5.3.2 Parallel Interface Connector and Cable Connector Printer: 36pConnector (Female) 57LE-40360-12 (D56) (DDK Ltd.) equivalent product...

  • Page 18: Explanation Of Operation

    Oki Data CONFIDENTIAL EXPLANATION OF OPERATION Electrophotographic processing mechanism (1) Electrophotographic process The electrophotographic process is explained briefly below: 1. Charging A voltage is applied to the CH roller to electrically charge the surface of the OPC drum. 2. Exposure The LED head radiates light onto the charged OPC drum in accordance with the image signal.
  • Page 19 Oki Data CONFIDENTIAL (3) Exposure The light emitted from the LED head is radiated onto the charged surface of the OPC drum. The charge of the radiated part of the OPC drum attenuates according to the intensity of the light, forming an electrostatic latent image on the OPC drum surface.
  • Page 20 Oki Data CONFIDENTIAL (5) Transfer A sheet of paper is placed over the OPC drum surface, and an electric charge is given to the paper from its back side by the transfer roller. When a high voltage is applied to the transfer roller from the power source, the charge...
  • Page 21 Oki Data CONFIDENTIAL (7) Removal of Electricity Electrically charge on the OPC drum surface decveases by exppsing the OPC drum surface after transfer to the light. Charging roller Board for the light of the removal of electricity Light for the...
  • Page 22 Oki Data CONFIDENTIAL (9) Fuser The toner image transferred on the paper is fused on the paper by heat and pressure when the paper passes through the heat roller and backup roller. The heat roller is heated by a 800W or 350W internal halogen lamp, and backup roller is heated by a 50W internal halogen lamp.

  • Page 23: Printing Process

    Oki Data CONFIDENTIAL Printing process The paper fed from Tray 1 or Tray 2 is carried by the paper feed roller, register roller L and transport roller. When the paper is fed from the MPT, it is carried by the MPT paper feed roller and register roller U.
  • Page 24 Oki Data CONFIDENTIAL (1) Paper fed from 1st Tray 1. As illustrated in Figure 2-1, when the solenoid is ON, the register motor rotates (Counterclockwise turn), transporting the paper until the IN1 sensor comes ON. (When the solenoid is ON, the paper feed roller is driven.) 2.
  • Page 25 Oki Data CONFIDENTIAL (3) Transport belt 1. As the transport belt motor rotates in the direction of the arrow, the transport belt is driven. The belt unit consists of one transport roller placed immediately underneath each color drum, with a transport belt inserted in between them.
  • Page 26 Oki Data CONFIDENTIAL (4) Up/down-motions of ID units 1. The up/down-motions of the ID units take place driven by the lift-up motor. 2. Figure 2-6 shows the motions of the different ID units when the printer is operated for color print. As the lift-up motor rotates (Clockwise turn), the lift-up link slides to the left, causing the ID units to come down, as can be seen in Figure 2-6.
  • Page 27 Oki Data CONFIDENTIAL (5) Fuser unit and paper output 1. As illustrated in Figure 2-8, the fuser unit and delivery roller are driven by the DC motor. As the fuser motor rotates (Counterclockwise turn), the heat roller is turned. This roller fixes a toner image by heat and pressure.
  • Page 28 Oki Data CONFIDENTIAL Outline of color drift correction The color drift correction is implemented reading the correction pattern that is printed on the belt with the sensor located inside the sensor shutter under the belt unit. This sensor is used to detect and correct the pattern.
  • Page 29 Oki Data CONFIDENTIAL Error checking methods and remedial methods The color drift correction test function among the other self-diagnostic functions is employed to check errors. (Subsection 5.3.2.6) Remedial methods against different errors • CALIBRATION (L or R), DYNAMICRANGE (L or R) Check 1: If the above indication appears, check the connected state of the sensor cable (FFC).
  • Page 30 Oki Data CONFIDENTIAL Outline of density correction method The density correction is implemented reading the correction pattern that is printed on the belt with the sensor located inside the sensor shutter under the belt unit. Automatic start timing of density correction: •...
  • Page 31 Oki Data CONFIDENTIAL Error checking methods and remedial methods The density correction test function among the other self-diagnostic functions is employed to check errors. (Subsection 5.3.2.7) Remedial methods against different errors • CALIBRATION ERR, DENS SENSOR ERR Check 1: If the above indication appears, check the connected state of the sensor cable.
  • Page 32 Oki Data CONFIDENTIAL Principle of toner sensor detection Toner LOW is detected by the toner sensor (Reflection sensor) installed inside the printer. The shielding plate is mounted inside the ID and rotates in synchronization with toner agitation. Moreover, the ID has a shutter fitted. The shutter is synchronized with the operation lever of the toner cartridge, and the toner sensor can detect that the toner cartridge has been loaded properly.

  • Page 33: Installation

    Oki Data CONFIDENTIAL INSTALLATION Cautions, and do's and don'ts • Do not install the printer at high temperature or near fire. • Do not install the printer in a location where chemical reaction can take place (laboratory, etc.). • Do not install the printer in the proximities of inflammable solvents, such as alcohol, paint thin- ner, etc.
  • Page 34 Oki Data CONFIDENTIAL • Do not install the printer in a location where its vent hole is blocked. • Do not install the printer directly on a shaggy carpet or rug. • Do not install the printer in a sealed room or other location with poor ventilation or permeabil- ity.

  • Page 35: Unpacking Method

    Oki Data CONFIDENTIAL Unpacking method Personal injuries may occur. Make sure to lift up this printer by two or more persons, since it weighs Approx. 40kg. • Remove the four handles from the sides of the box, as illustrated below, and lift up the cor- rugated fiberboard box.

  • Page 36: Printer Installation Instructions

    Oki Data CONFIDENTIAL Printer Installation Instructions • Install the printer in a location where the following temperature and humidity are met: Ambient temperature: 10 - 32˚C Ambient humidity: 20 - 80 %RH(Relative humidity) Max. wet-bulb temperature: 25˚C • Use caution to avoid dew condensation.

  • Page 37: Listing Of Component Units And Accessories

    Oki Data CONFIDENTIAL Listing of component units and accessories • Check to make sure that the component units are free from damage, dirt or other zirregulari- ties in the appearance. • Ensure that none of the accessories to the units is missing and that they are free from breakage or other flaw.

  • Page 38: Assembling Method

    Oki Data CONFIDENTIAL Assembling method 3.5.1 Assembly of printer main body Removing the protective materials (1) Remove the desiccant and protective paper from the top of the printer. Desiccant Paper (2) Remove the protective tapes (3 places) and protective paper from the front of the printer.
  • Page 39 Oki Data CONFIDENTIAL Install the image drum cartridges (1) Take out the image drum cartridge (4 cartridges) gently. Note! • The image drum (green cylinder part) is very sensitive to scratches, therefore, special care should be taken on handling. • Do not expose the image drum cartridges to direct sunlight or strong light (approx.
  • Page 40 Oki Data CONFIDENTIAL Install the toner cartridges Note! The toner cartridges supplied with the product are capable of printing approximately 2,000 sheets with letter-size paper and 5% print density. (1) Take the toner cartridge out of its package and shake the toner cartridge several times vertically and horizontally.
  • Page 41 Oki Data CONFIDENTIAL Install the image drum cartridges to the printer (1) Match the color of the label on the image drum cartridge to the color of the label on the printer. (2) Return the image drum cartridge (4 cartridges) gently.
  • Page 42 Oki Data CONFIDENTIAL Load paper in the paper cassette (1) Pull out the paper cassette. Note! Do not remove the rubber on the plate. (2) Adjust the paper stopper and paper guide to the size of the paper being used.
  • Page 43 Oki Data CONFIDENTIAL Loading paper in the multi-purpose tray (1) Open the multi-purpose tray and also the paper supporter. Multi-purpose tray (2) Set the manual feed guide to the paper size. (3) Line up the vertical and lateral edges of the paper.

  • Page 44: Connection Of Power Cable

    Oki Data CONFIDENTIAL 3.5.2 Connection of power cable Power supply conditions • Observe the following conditions: AC: 220~240V±10% Power frequency: 50Hz or 60Hz ± 2Hz • If the available power is unstable, use a voltage regulator or the like. • The maximum power consumption of this printer is 1300W. Ensure that the power source offers an ample margin in the power capacity.
  • Page 45 Oki Data CONFIDENTIAL Connecting the power cord Note! Ensure that the power switch is in OFF (O). (1) Insert the power cord into the printer. (2) After connecting the grounding wire to the ground terminal of the power outlet, insert the power plug into the power outlet.
  • Page 46 Oki Data CONFIDENTIAL Follow the following steps to turn off the printer Note! Sudden turn-off may damage and disable your printer. (1) Press the “BACK” switch for at least four seconds to display [SHUTDOWN MENU]. (2) Press the “ENTER” switch. [SHUTDOWN] will be displayed and the shutdown process will start.

  • Page 47: Installation Of Optional Items

    Oki Data CONFIDENTIAL 3.5.3 Installation of optional items (1) Installation of second tray unit This tray is intended to increase the amount of paper that can be loaded in the printer. It holds 530 sheets of 70kg ream weight paper, allowing to print 930 sheets continuously when combined with the standard paper cassette and multi-purpose tray.
  • Page 48 Oki Data CONFIDENTIAL (2) Installation of duplex unit This unit is used for printing on two sides of paper. Type: Turning OFF the printer power and disconnecting the power cord Note! If an expansion memory is installed with the power switched ON, the printer may be broken.
  • Page 49 Oki Data CONFIDENTIAL (3) Installing expansion memory Expansion memory is a board that increases the memory capacity of the printer. When the printer causes an ADD MORE MEMORY error due to memory insufficient for complex data on the printer or, in making collated sets of copies, displays a message COLLATING ERROR, expansion memory should be added to the printer.
  • Page 50 Oki Data CONFIDENTIAL Remove the side cover ❶ Loosen the one screw. ❷ Remove the side cover. The side cover can be detached by holding it by the upper portion and, lifting it, moving it sideways outward. Screw Side cover Memo When the side cover cannot be detached, be sure the front cover is open.
  • Page 51 Oki Data CONFIDENTIAL ❹ Press the memory toward the printer to hold it in place. ❺ Close the metal plate door. Door Note! • Do not touch electronic parts or connector pins. • Observe the orientation of the memory. The memory has a notch in its pin edge so as to fit with the memory slot connector.
  • Page 52 COLLATING ERROR. Memo Hard disks for C8800 are incompatible with those for C5900. Hard disks for C8800 and those for C5900 are respectively indicated as HDD-C3C and HDD-C1B on labels. Turn off the printer and disconnect the power cord The steps shown in section 3.5.2 Turning off printer should be followed to turn off the printer.
  • Page 53 Oki Data CONFIDENTIAL Open the top cover and the front cover ❶ Push the OPEN button to open the top cover. OPEN button Top cover Front cover Handle ❷ Push up the handle at the center of the front cover to open the front cover.
  • Page 54 Oki Data CONFIDENTIAL Install an internal hard disk ❶ Open the metal plate door. ❷ Fit into the holes of the printer the protrusions of the internal hard disk to be installed. ❸ Secure the disk with the two screws.
  • Page 55 Oki Data CONFIDENTIAL Print MenuMap to check the internal hard disk is correctly installed ❶ Follow the steps shown in section 3.6 to print MenuMap. ❷ Be sure the capacity of the internal hard disk is shown at HDD contained in the header of MenuMap.
  • Page 56 Faxes. In Windows Server 2003, choose Start | Printers and Faxes. In Windows 2000, choose Start | Settings | Printers. ❷ Click the C8800 (PS) icon with the right mouse button and choose Properties. ❸ Click Get printer information in Installable Options on the Device Settings tab, and click Setup or Get printer information.
  • Page 57 Faxes. In Windows Server 2003, choose Start | Printers and Faxes. In Windows 2000, choose Start | Settings | Printers. ❷ Click the C8800 (PCL) icon with the right mouse button and choose Properties. ❸ Select Get printer information on the Device Options tab. When the printer has been connected to the computer via USB, mark the Hard Disk checkbox.
  • Page 58 Oki Data CONFIDENTIAL Macintosh Information about any options that have been added to the printer before the printer driver is installed is automatically obtained on the Macintosh. When the hard disk option has been added to the printer after the printer driver is installed, make a setting for the option using the following steps.
  • Page 59 ❶ Double-click the hard disk where OS X is installed, double-click Applications, double-click Utilities, and then double-click Printer Setup Utility (or Print Center on Mac OS X 10.2). ❷ Select C8800 and click Show Info to open Printer Info. ❸ Choose Installable Options.

  • Page 60: Confirmation Of Recognition Of Optional Items

    Oki Data CONFIDENTIAL 3.5.4 Confirmation of recognition of optional items To check to see whether or not the optional items have been installed properly, execute the Menu Map print by referring to "3.6 Menu Map print". (1) Confirmation of recognition of second tray <Confirmation of recognition of second tray>...

  • Page 61: Menu Map Print

    Oki Data CONFIDENTIAL Menu Map print This print is intended to ensure that the printer operates normally. (1) Load letter paper in the tray. (2) Press the "MENU+" switch several times to cause [Information Menu] to be displayed. (3) Press the "ENTER"...
  • Page 62 Oki Data CONFIDENTIAL C8800 (Sample) 62 / 43170003TH Rev.2...

  • Page 63: Connection Methods

    Oki Data CONFIDENTIAL Connection methods <USB connection> Preparing a USB cable Note! • No printer cable is supplied with the printer. Provide one separately. • Prepare a USB type cable separately. • When connection is to be made in "Hi-Speed" mode of USB2.0, use a USB cable conforming to the Hi-Speed specification.
  • Page 64 Ethernet cable (a Category 5 twisted pair cable, straight-through) and a hub. < Ethernet cable > < Hub > Switching off the printer and computer Network interface connector <Parallel Connection> (Centronics I/F model : C8800) 1. Prepare a parallel cable. 2. Power off Printer and Personal Computer 64 / 43170003TH Rev.2...

  • Page 65: Confirmation Of Paper Used By The User

    Oki Data CONFIDENTIAL 3. Connect Personal Computer and Printer (1) Connect a parallel cable into a parallel interface connector of printer and use metal fittings to secure the cable. (2) Connect a parallel cable into a parallel interface connector of PC and use screw to secure the cable.

  • Page 66: Replacement Of Parts

    Oki Data CONFIDENTIAL REPLACEMENT OF PARTS This section explains the field replacement procedures for parts, assemblies and component units. While those replacement procedures refer to the disassembling of parts, follow the same procedures inversely for reassembling them. The part numbers (1, 2, etc.) employed in this manual are different from those assigned in the corresponding configuration diagrams of Disassembly for Maintenance (43170001TL) and RSPL (43170001TR).
  • Page 67 Oki Data CONFIDENTIAL [Maintenance Tools] Table 4-1-1 indicates the tools necessary to replace printed-circuit boards and component units. Table 4-1-1 Maintenance Tools Service Tools Q' ty Place of use Remarks No. 2-200 Philips 3~5 mm screws screwdriver, Magnetized No. 3-100 screwdriver No.

  • Page 68: Part Replacement Methods

    Oki Data CONFIDENTIAL Part replacement methods This subsection explains the replacement methods for the parts and assemblies illustrated in the disassembly system diagram below. 4.2.1 Belt unit (1) Open the top cover. (2) Remove the ID unit Top cover Note! Do not expose the image drum...

  • Page 69: Fuser Unit

    Oki Data CONFIDENTIAL 4.2.2 Fuser unit (1) Open the top cover. (2) Raise the lock lever (blue) of the fuser unit in the direction of the arrow to detach the fuser unit Top cover Fuser unit lock lever (blue) Fuser unit lock lever (blue) 69 / 43170003TH Rev.2...

  • Page 70: Left Side Cover

    Oki Data CONFIDENTIAL 4.2.3 Left side cover (1) Open the top cover. (2) Open the front cover. (3) Remove screw (silver) , and detach left side cover . (Tool No.1) Top cover Front cover 70 / 43170003TH Rev.2...

  • Page 71: Right Side Cover

    Oki Data CONFIDENTIAL 4.2.4 Right side cover (1) Open the top cover. (2) Open the front cover. (3) Loosen screw , and detach right side cover . (Tool No.1) Top cover (Loosen) Front cover 71 / 43170003TH Rev.2...

  • Page 72: Rear Cover Assy

    Oki Data CONFIDENTIAL 4.2.5 Rear cover Assy. (1) Pull out the duplex unit (2) Remove the two (silver colored) screws (Tool No. 1). (3) Slide, in the direction of the arrow shown in the figure, the rear cover Assy. to detach it.

  • Page 73: Led Assy

    Oki Data CONFIDENTIAL 4.2.6 LED Assy. (1) Open the top cover. (2) Unplug the FFC cable, then, as shown in figure (1), apply in the direction of the arrow shown in it force to remove the hook A, and then remove the hook B to detach the LED Assy.

  • Page 74: Main Controller Pcb, Id Motor, Id Lift-Up Motor, And Paper Feed Motor

    Oki Data CONFIDENTIAL 4.2.7 Main controller PCB, ID motor, ID lift-up motor, and paper feed motor (1) Open the top cover. (2) Remove the right side cover (see section 4.2.4) (3) Remove the ten (silver colored) screws and the plate shield Assy.
  • Page 75 (9) Remove the two (silver colored) screws and the cable to detach the ID lift-up motor (10) Remove the two (silver colored) screws and the cable to detach the paper feed motor Top cover Main controller PCB (C8800) 75 / 43170003TH Rev.2...

  • Page 76: Print Engine Controller Pcb

    Oki Data CONFIDENTIAL 4.2.8 Print engine controller PCB (1) Remove the plate shield Assy. <4.2.7 (1) to (3)>. (2) Remove the two (silver colored) screws and the reinforcement plate (Tool No. 1). (3) Remove all the connectors and the two (silver colored) screws...
  • Page 77 Oki Data CONFIDENTIAL C8800 (1) Remove the plate shield Assy. <4.2.7 C8800 (1) to (4)>. (2) Remove the three (silver colored) screws ,the (black) screw and the reinforcement plate (Tool No. 1). (3) Remove all the connectors and the two (silver colored) screws...
  • Page 78 M Fuser M BELT PE sensor Size SW POWFAN HSOL BELT FSNSOL OPTION POWER M paper feed and ID-up/down Relay board High-voltage board Low-voltage power supply Option (Duplex 2nd) Print engine controller PCB cable route diagram (C8800) 78 / 43170003TH Rev.2...
  • Page 79 Oki Data CONFIDENTIAL HSOL POWFAN FSNSOL BELT OPTION POWER Print engine controller PCB connection diagram 79 / 43170003TH Rev.2...

  • Page 80: Top Cover Assy

    Oki Data CONFIDENTIAL 4.2.9 Top cover Assy. (1) Remove the left side cover (see section 4.2.3). (2) Remove the right side cover (see section 4.2.4). (3) Remove the rear cover Assy. (see section 4.2.5). (4) Remove the plate Assy. shield (see section 4.2.7).
  • Page 81 Oki Data CONFIDENTIAL C8800 (1) Remove the left side cover (see section 4.2.3). (2) Remove the right side cover (see section 4.2.4). (3) Remove the rear cover Assy. (see section 4.2.5). (4) Remove the plate Assy. shield (see section 4.2.7).

  • Page 82: Top Cover

    (Tool No. 1). (3) Remove the screw and the cable Assy. -LED heads (Tool No. 1). Remove the film contact when removing the top cover of C8800. (4) Warp the top-cover support to remove it. Film contact 82 /...

  • Page 83: Control Panel Assy

    Oki Data CONFIDENTIAL 4.2.11 Control panel Assy. (1) Open the top cover. (2) Open the MPT Assy. (3) Remove the left side cover and the right side cover (see sections 4.2.3 and 4.2.4). (4) Remove the plate shield Assy. <see section 4.2.7 (2)>.

  • Page 84: Board Prp

    Oki Data CONFIDENTIAL 4.2.12 Board PRP (1) Remove the control panel Assy. (see section 4.2.11). (2) Remove the lock lever and the spring-compression (3) Bow and disengage the two lug As from the part with which they have been engaged, and remove the OP cover Assy.

  • Page 85: Shaft Assy.-Eject (Fu) And Shaft Assy.-Eject (Fd)

    Oki Data CONFIDENTIAL 4.2.13 Shaft Assy.-eject (FU) and shaft Assy.-eject (FD) (1) Remove the rear cover Assy. (see section 4.2.5). (2) Remove the (silver colored) screw and the guide Assy.-eject-upper (Tool No. 1). (3) Remove the gears-idle-eject (4) Remove the two mold E-rings to bow and detach the shaft-Assy.-eject (FU)

  • Page 86: Guide Assy.-Eject-Lower, Assy.-Color-Regist And Relay Board (P6Y)

    Oki Data CONFIDENTIAL 4.2.14 Guide Assy.-eject-lower, Assy.-color-regist and relay board (P6Y) (1) Remove the left side cover, the right side cover, the rear cover, the top cover Assy. and the print engine controller PCB and the guide Assy. -eject-upper (see sections 4.2.3, 4.2.4, 4.2.5, 4.2.8, 4.2.9 and 4.2.13).
  • Page 87 Oki Data CONFIDENTIAL Fuser inlet sensor Density sensor Color-regist sensor Color-regist sensor FUSERIN DENS RCR Fuser release sensor and exit sensor Fuser interface connector P6Y board PU interface connector Relay board (P6Y) cable route diagram Left color-regist sensor PCB Right color-regist sensor PCB...

  • Page 88: Fan (Fuser), High-Voltage Power Supply Board, Contact Assy. And Fuser Sensor Assy

    Oki Data CONFIDENTIAL 4.2.15 Fan (fuser), high-voltage power supply board, contact Assy. and fuser sensor Assy. (1) Remove the left side cover (see section 4.2.3). (2) Pull the connector from the high-voltage power supply board and remove the two (silver...

  • Page 89: Mpt Assy., Mpt Hopping Roller, Separator-Frame Assy. And Roller Assy.-Pick-Up

    Oki Data CONFIDENTIAL 4.2.16 MPT Assy., MPT hopping roller, separator-frame Assy. and roller Assy.-pick-up (1) Open the top cover. (2) Open the MPT Assy. and, on each side of the Assy. , bow the stay to slide the support point of the Assy.

  • Page 90: Registration Roller Assy

    Oki Data CONFIDENTIAL 4.2.17 Registration roller Assy. (1) Remove the control panel Assy. (see section 4.2.11). (2) Remove the motor <see section 4.2.7 (8)>. (3) Remove the cable. (4) Remove the two (silver colored) screws and the gear cover (Tool No. 1).

  • Page 91: Gear Box, Registration Roller, Hopping Roller Assy. And Solenoid

    Oki Data CONFIDENTIAL 4.2.18 Gear box, registration roller, hopping roller Assy. and solenoid (1) Remove the registration roller Assy. (see section 4.2.17). (2) Remove from the clamp the cable of the solenoid and remove the (silver colored) screw to detach the solenoid (Tool No.

  • Page 92: Holder Assy.-Switch, Low-Voltage Power Supply Fan And Low-Voltage Power Supply

    Oki Data CONFIDENTIAL 4.2.19 Holder Assy.-switch, low-voltage power supply fan and low-voltage power supply (1) Remove the plate Assy.-shield <see sections 4.2.7, (1) to (3)>. (2) Remove the connector and the black (screw) to detach the holder Assy.-switch (Tool No. 1).

  • Page 93: Belt Motor Assy. And Fuser Motor Assy

    Oki Data CONFIDENTIAL 4.2.20 Belt motor Assy. and fuser motor Assy. (1) Remove the main controller PCB and the print engine roller PCB (see sections 4.2.7 and 4.2.8). (2) Remove the insulator (3) Remove the two cables from the clamp, remove the four (silver colored) screws...

  • Page 94: Side Assy.-R And Side Assy.-L

    Oki Data CONFIDENTIAL 4.2.21 Side Assy.-R and side Assy.-L (1) See sections 4.2.1 to 4.2.20. (2) Remove the two (silver colored) screws and the ID lift-up gear bracket (3) Remove the E-ring and the ID-lift-up gear (R) (Tool No. 7).

  • Page 95: Paper Feed Roller (Tray1)

    Oki Data CONFIDENTIAL 4.2.22 Paper feed roller (Tray1) Note! The paper feed roller and separate piece must be replaced by the set. (1) Turn off the power of the printer and remove the paper cassette. (2) Stretching the claw of the paper feed roller (large) outward, remove the roller from the shaft.
  • Page 96 Oki Data CONFIDENTIAL [Caution when attaching the paper feed roller] When attaching new paper feed roller, put it in the shaft and turn it to be firmly inserted. At that time, confirm that the roller must not be slipped. [Caution when attaching the separate piece] 1.

  • Page 97: Paper Feed Roller (Tray2 (Optional))

    Oki Data CONFIDENTIAL 4.2.23 Paper feed roller (Tray2 (Optional)) Note! The three paper feed rollers must be replaced. (1) Turn off the power of the printer and remove the paper cassette. (2) Stretching the two claws of the paper feed rollers outward, remove the rollers from the shafts.
  • Page 98 Oki Data CONFIDENTIAL (4) Pull the retard roller Assy in the direction of the arrow to remove it from the shaft. [Caution when attaching the paper feed roller] 1. Put new paper feed roller (with gears) in the back shaft and turn it to be firmly inserted.
  • Page 99 Oki Data CONFIDENTIAL [Caution when attaching the retard Assy] 1. Put the spring in the boss part in the backside of the retard roller Assy, and then push the bearing of the retard roller Assy in the cassette side shaft in the upward direction from the oblique below point.

  • Page 100: Paper Feed Roller (Multi-Purpose Tray)

    Oki Data CONFIDENTIAL 4.2.24 Paper feed roller (Multi-purpose Tray) (1) Turn off the power of the printer and open the multi-purpose tray. Multi-purpose tray (2) Lift the paper pick-up part and stretch the claw of the paper feed roller outward to remove it from the shaft.

  • Page 101: Lubricating Points

    Oki Data CONFIDENTIAL Lubricating points This subsection indicates the lubricating points of the printer. Conversely, it means that any other parts than the specified lubricating points must not be lubricated. There is no need to lubricate in the midst of a disassembling job. However, if lubricating oil has been wiped off, supply the specified oil.
  • Page 102 Oki Data CONFIDENTIAL Frame-Assy.-Hopping Gear-Z24-50-HP Post EM-30L Class A Bearing EM-30L Class A Gear-Planet(Z12)-HP Bearing EM-30L Class A Cross sectiong EM-30L Class C Stopper-HP Plate-Gear Both sides EM-30L Class A Holder-Planet Stopper-Z45-48-HP Shaft-Hopping Shaft-Hopping Gear washers EM-30L Class C Groove section...
  • Page 103 Oki Data CONFIDENTIAL Gear-Holder-Assy. Apply a normal amount of MOLYKOTE (EM-30L) to the hatched areas Class C Holder-Gear-A Post-Gear-Holder Apply Class B of amount of MOLYKOTE (EM-30L) to the hatched portions Space-Gear Apply Class B of amount of MOLYKOTE (EM-30L) to...
  • Page 104 Oki Data CONFIDENTIAL -1 Roller-Assy.-Regist (Lower) Apply a normal amount of MOLYKOTE (EM-30L) to the hatched areas Class C Bearing-Regist Bearing Apply a normal amount of MOLYKOTE (EM-30L) to the hatched areas Class C 104 / 43170003TH Rev.2...
  • Page 105 Oki Data CONFIDENTIAL -2 Roller-Assy.-Regist (Lower) Apply a normal amount of MOLYKOTE (EM-30L) Apply a large amount of MOLYKOTE to the hatched areas Class C (EM-30L) to all gear teeth Class C Plate-Holder-Caulking Gear-Regist-U-24-45 Gear-Idle-MPT Gear-Z42 Gear-Regist-L-24-54 Apply a large amount of MOLYKOTE...
  • Page 106 Oki Data CONFIDENTIAL -1 Guide-Eject-Upper Apply a small around of MOLYKOTE (EM-30L) to the hatched areas Class A (7 points) Grease must not stick to the paper paths. Apply a normal amount of MOLYKOTE (EM-30L) to the bearing Class C Grease must not stick to the paper paths.
  • Page 107 Oki Data CONFIDENTIAL -2 Guide-Eject-Upper Apply a normal amount of MOLYKOTE (EM-30L) to the gear tooth, bearing surface and flange area Class C Shaft-Assy. -Eject-(FD) Apply a normal amount of MOLYKOTE (EM-30L) to the gear tooth, bearing surface and flange area Class C Shaft-Assy.
  • Page 108 Oki Data CONFIDENTIAL -3 Guide-Eject-Upper Gear-Idle-Exit(Z58) Apply a normal around of MOLYKOTE (EM-30L) to the post Class C Gear-Idle-Exit(Z41) EM-30L Class C Cross hatched area Gear-Idle-Exit(Z58) Gear-Idle-Exit(Z41) Cross-section view Cross-section view 108 / 43170003TH Rev.2...
  • Page 109 Oki Data CONFIDENTIAL Motor-Assy.-Belt Apply a normal amount of MOLYKOTE (EM-30L) to the post Class C (2 points) Apply a normal amount of MOLYKOTE (EM-30L) to the gear tooth Class C Plate-Belt-Caulking Gear-Idle-Belt Gear-Reduction-Belt Apply a normal amount of MOLYKOTE (EM-30L)
  • Page 110 Oki Data CONFIDENTIAL -1 Plate-Main-Assy. Apply a normal amount of MOLYKOTE (EM-30L) to the hatched areas Class C (9 points) Plate-Main-Caulking Collar Apply a large amount of MOLYKOTE (EM-30L) to the hatched areas Class F 110 / 43170003TH Rev.2...
  • Page 111 Oki Data CONFIDENTIAL -2 Plate-Main-Assy. EM-30L Class C Gear cross section (9 points) Apply a large amount of MOLYKOTE (EM-30L) to the hatched areas (4 portions) Class F Gear-Idle-Drum Gear-Idle-A Gear-Idle-A Gear-Idle-B Gear-Reduction ID EM-30L Class C Plate-Main-caulking Gear tooth and end surface...
  • Page 112 Oki Data CONFIDENTIAL Planet-Assy. Class C Apply a normal amount of MOLYKOTE (HP300) to the gear tooth Washer Spring-Planet Gear-Planet-Roller Post-Planet RE2-SK Class C Apply a normal amount of MOLYKOTE Plate-Planet-FU (HP300) to the post Bush-4 Gear-Planet-Release 112 / 43170003TH Rev.2...
  • Page 113 Oki Data CONFIDENTIAL Plate-Main2-Assy. Class C Class C Apply a normal amount of MOLYKOTE Apply a normal amount of MOLYKOTE (HP300) to the posts (HP300) to the tooth surface Gear-Reduct-Roller Gear-Idle-Release Class C Apply a normal amount of MOLYKOTE (HP300) to the tooth surface Planet-Assy.
  • Page 114 Oki Data CONFIDENTIAL -1 Plate-Side-R-Assy. Plate-Side-R EM-30L Class C Apply a normal amount of MOLYKOTE (EM-30L) to the all of the hatched areas (4 points) 114 / 43170003TH Rev.2...
  • Page 115 Oki Data CONFIDENTIAL -2 Plate-Side-R-Assy. Plate-Side-R Apply a normal amount of MOLYKOTE (EM-30L) to the hatched areas (the rear side of (4 points) EM-30L Class C 115 / 43170003TH Rev.2...
  • Page 116 Oki Data CONFIDENTIAL -3 Plate-Side-R-Assy. Plate-Side-R Apply a normal amount of MOLYKOTE (EM-30L) to the hatched areas 116 / 43170003TH Rev.2...
  • Page 117 Oki Data CONFIDENTIAL -4 Plate-Side-R-Assy. Apply a small amount of MOLYKOTE (EM-30L) to the hatched areas Class A Rack-Lift-Up-R EM-30L Class A Hatched areas (width: 5mm) Enlarged view Gear-Cassette-R EM-30L Class C Apply a normal amount of MOLYKOTE (EM-30L) to the all the hatched portions 117 / 43170003TH Rev.2...
  • Page 118 Oki Data CONFIDENTIAL -5 Plate-Side-R-Assy. Motor-Assy.-Fuser Gear-Idle-Fuser Plate-Side-R-Assy. Apply a normal amount of MOLYKOTE (HP300) to the hatched areas 118 / 43170003TH Rev.2...
  • Page 119 Oki Data CONFIDENTIAL -1 Plate-Side-L-Assy. Plate-Side-L Apply a normal amount of MOLYKOTE (EM-30L) to the hatched areas 119 / 43170003TH Rev.2...
  • Page 120 Oki Data CONFIDENTIAL -2 Plate-Side-L-Assy. Guide-Cassette-L EM-30L Class C Apply a normal amount of MOLYKOTE (EM-30L) to the all the hatched areas 120 / 43170003TH Rev.2...
  • Page 121 Oki Data CONFIDENTIAL -3 Plate-Side-L-Assy. Apply a small amount of MOLYKOTE (EM-30L) to hatched area Class A Expanded view Apply a small amount of MOLYKOTE (EM-30L) to hatched area Class A Rack-Lift-Up-L EM-30L Class A Hatched area (Width: 5mm) Expanded view 121 / 43170003TH Rev.2...
  • Page 122 Oki Data CONFIDENTIAL Sensor-Regist-Assy. Frame-Shutter Apply a normal amount of MOLYKOTE (EM-30L) to the posts Class C (3 points) Cassette-Assy Frame-Separation-Assy. Fulcrums of rotation and side EM-30L Class C 122 / 43170003TH Rev.2...
  • Page 123 Oki Data CONFIDENTIAL Roller-Assy.-Idle (FD) Range in which grease must not stick Grease applying method: Before assembling , apply MOLYKOTE (EM-30L) in a very small quantity (Class S) to the sliding parts (hatched parts) between 123 / 43170003TH Rev.2...
  • Page 124 Oki Data CONFIDENTIAL -1 Printer-Unit (PX736) Apply a normal amount of MOLYKOTE (EM-30L) to the posts Class C (2 points) Plate-Lift-Up-Caulking Gear-Reduction-L-UP3 Gear-Reduction-L-UP2 Apply a normal amount of MOLYKOTE (EM-30L) to the around of the gear tooth Class C 124 /...
  • Page 125 Oki Data CONFIDENTIAL -2 Printer-Unit (PX736) Spring-Torsion-L Cover-Assy.-Top Spring-Torsion-R Apply MT to the slot parts of the solid coiling of this torsion spring using a brush. Class C (Spring-Torsion-L, Spring-Torsion-R Both sides) 125 / 43170003TH Rev.2...
  • Page 126 Oki Data CONFIDENTIAL -3 Printer-Unit (PX736) (1) Apply a normal amount of MOLYKOTE (EM-30L) to the inner surface of the hole (hatched area) (Plate-Side-R, Plate-Side-L Both sides) Class C (2) Insert Shaft-Lift-Up from the Plate-Side-R side. Shaft-Lift-UP (3) Apply a normal amount of MOLYKOTE (EM-30L)
  • Page 127 Oki Data CONFIDENTIAL -4 Printer-Unit (PX736) Plate-Side-Assy. Gear-Reduction-L-UP Apply a normal amount of MOLYKOTE (EM-30L) to the around of the gear tooth Class C Shaft-Lift-UP Gear-Reduction-L-UP Apply a normal amount of MOLYKOTE (EM-30L) to the around of the gear tooth...
  • Page 128 Oki Data CONFIDENTIAL -5 Printer-Unit (PX736) Apply a small amount of MT to the hatched area Class A Applying method: Wipe the part with a cloth slightly impregnated with (2) After applying MT, insert and pull out the cassette several times to ensure that no noise is emitted.

  • Page 129: Maintenance Menus

    Oki Data CONFIDENTIAL MAINTENANCE MENUS The adjustment of this printer can be implemented using the maintenance utility and also by key input through the operator panel. This printer provides maintenance menus, apart from the normal menus. Select the menu that best suits the purpose of your intended adjustment.
  • Page 130 Oki Data CONFIDENTIAL Table 5-1 Maintenance menu indication table (2/2) Category Item (1st Line) Value (2nd Line) DF Function TEST PRINT TEST PRINT ENABLE Setting is made here to select either MENU MENU DISABLE to display or not to display "PRT ID CHK PATN"...
  • Page 131 Oki Data CONFIDENTIAL Table 5-1(C8800) Maintenance menu indication table (1/2) Category Item Value Default Function / Notes SYSTEM MAINTE ENTER ************ 000000 Enter a password to enter System PASSWORD Maintenance menu. The default value is "000000" From 6 to 12 digits of numbers or Roman character to input.
  • Page 132 Oki Data CONFIDENTIAL Table 5-1(C8800) Maintenance menu indication table (2/2) Category Item Value Default Function / Notes TEST PRINT MENU TEST PRINT ENABLE If this item is "DISABLE", "PRT ID CHK MENU DISABLE PATN" and "ENG STATUS PRINT" will not be displayed.

  • Page 133: Maintenance Utility

    Oki Data CONFIDENTIAL Maintenance utility The maintenance utility is used to perform the adjustments of Table 5-2. Details of the maintenance utility are described below. (1) Maintenance Utility Operation Manual: 42678801FU01 Rev.10 or later (Japanese) 42678801FU02 Rev.10 or later (English) (2) The maintenance utility programs are indicated below.
  • Page 134 Oki Data CONFIDENTIAL Table 5-2 Maintenance Utility Adjustment Items (1/2) Operation on Section No. of the Operator Panel Item Adjustment Maintenance Utility (Section No. corresponds to Operation the Maintenance manual) 1 PU Board Copying of the EEPROM of PU PCB.
  • Page 135 Oki Data CONFIDENTIAL Table 5-2 Maintenance Utility Adjustment Items (2/2) Operation on Section No. of the Operator Panel Item Adjustment Maintenance Utility (Section No. corresponds to Operation the Maintenance manual) 12 Setup of sensitivity Setup of the sensitivity correction value of...

  • Page 136: Functions Of User's Maintenance Menu

    Oki Data CONFIDENTIAL 5.3 Functions of user's maintenance menu 5.3.1 Maintenance menu (For end users) There is a maintenance menu category among the normal menu categories. (Different from the system maintenance menus) The items that can be set under this menu are indicated below.

  • Page 137: Self-Diagnostic Mode

    Oki Data CONFIDENTIAL 5.3.2 Self-diagnostic mode Individual explanation of LEVEL0 and LEVEL1. 5.3.2.1 Operator panel The explanation of the operations relating to the self-diagnosis presupposes, the following operation panel arrangement is required. (1) Transition of menu items Self-diagnostic Level transition is possible only when a part is displayed.
  • Page 138 Oki Data CONFIDENTIAL (1) Switchover of menu items LEVEL0 The transition of xxxxx is activated when [BACK] or [ONLINE] is pressed and held down, or [MENU+] or [MENU-] is pressed briefly. The transition of xxxxx is activated with [MENU+] or [MENU-].
  • Page 139 Oki Data CONFIDENTIAL (1) Switchover of menu items LEVEL1 The transition of xxxxx is activated when [BACK] or [ONLINE] is pressed and held down, or [MENU+] or [MENU-] is pressed briefly. The transition of xxxxx is activated with [MENU+] or [MENU-].

  • Page 140: Normal Self-Diagnostic Mode (Level 1)

    Oki Data CONFIDENTIAL 5.3.2.2 Normal self-diagnostic mode (Level 1) The menus of the normal self-diagnostic mode are indicated below. Table 5-3 Maintenance Utility Adjustment Items Item Self-diagnosis Menu Adjustment Maintenance Utility Switch scan test SWITCH SCAN Checking of inlet sensor and...

  • Page 141: Activation Method For Self-Diagnostic Mode (Level 1)

    Oki Data CONFIDENTIAL 5.3.2.2.1 Activation method for self-diagnostic mode (Level 1) Memo For C8800, a password is required to enter the system maintenance menu mode. See Table 5-1 (C8800). The system maintenance menu mode is activated when the power is turned on with the MENU+ and MENU- keys held down simultaneously Press the MENU+ or MENU- key several times, until "ENGINE DIAG MODE"...
  • Page 142 Oki Data CONFIDENTIAL Image drum up/down sensor Toner sensor C Toner sensor Y Toner sensor M Fuser thermistor Toner sensor K upper, side Heater frame thermistor RFID RFID RFID RFID antenna M antenna K Exit sensor antenna Y Cover open SW...
  • Page 143 Oki Data CONFIDENTIAL 143 / 43170003TH Rev.2...

  • Page 144: Motor Clutch Test

    Oki Data CONFIDENTIAL 5.3.2.4 Motor clutch test This self-diagnosis is practiced to test motors and clutches. Activate the self-diagnostic mode (Level 1), press and hold down the MENU+ or MENU- key, until "MOTOR & CLUTCH TEST" appears in the upper line of the display section, and then, press the ENTER key.
  • Page 145 Oki Data CONFIDENTIAL ID Motor Fuser Motor Fuser 2 FAN ID UP/DOWN Motor Registration Shutter Fuser FAN Exit Solenoid Duplex Clutch Cassette 1 Hopping Motor (Registration Motor, Front Motor) Hopping Solenoid Duplex Motor Cassette 2 Clutch Cassette 2 Motor Belt Motor...

  • Page 146: Test Print

    Oki Data CONFIDENTIAL 5.3.2.5 Test print This self-diagnosis is practiced to print test patterns built in PU. Other test patterns are stored in the controller. This print cannot be used to check the print quality. To diagnose abnormal images, follow Section 7.
  • Page 147 Oki Data CONFIDENTIAL Notes! PAGE setup ......After shifting the digit of the set value with the MENU+ key or MENU- key, press the ONLINE key. The set value will be incremented. Pressing the CANCEL key decrements it. COLOR setup ....Pressing the ENTER key after selecting ON causes the data indicated below to appear on the panel.
  • Page 148 Oki Data CONFIDENTIAL Pattern 3 Pattern 4 Pattern 5 Pattern 6 Note! If the solid print (Pattern 7) available among the local print functions is conducted with 100% of each color, offset will take place. To prevent this offset, it will be necessary to make the print setup of each color as specified in 3 of Subsection 5.3.2.5...
  • Page 149 Oki Data CONFIDENTIAL • When print is executed, the following message is displayed: P=*** W=*** P: Number of test-print pages (Unit: sheets) W: Print wait time (Unit: seconds) • Pressing the MENU+ key switches over the indication. T=*** U=***[###] H=*** %L=***[###] U: *** = Measured value of upper heater temperature [Unit: ˚C]...
  • Page 150 Oki Data CONFIDENTIAL • Pressing the MENU+ key switches over the indication. KID=**** YID=**** MID=**** CID=**** KID, YID, MID and CID denote the constant-speed timer values of the respective ID motors (I/ O set values) [Unit: HEX]. • Pressing the MENU+ key switches over the indication.

  • Page 151: Color Registration Adjustment Test

    Oki Data CONFIDENTIAL 5.3.2.6 Color registration adjustment test This self-diagnosis is utilized to adjust color registration of the printer and to locate the cause of color misregistration. If any error occurs during a color registration test, restore the normal operation of the printer by following “Outline of color drift correction”...

  • Page 152: Print Density Adjustment Test

    Oki Data CONFIDENTIAL <<BLT REFLECT RSLT is executed>> The same as the key operation of Item . in the execution of BLT REFLECT TEST. Repeat Items 2 and 3, as needed. Press the [BACK] key to terminate the test. (Status of Item 1 restored)
  • Page 153 Oki Data CONFIDENTIAL <<DENS ADJ RESULT is executed>> The same as the key operation of Item in the execution of DENS ADJ EXECUTE. <<DENS ADJ PAR-SET is executed>> Indication only, without functionality. <<AUTO CALIBRATION is executed>> Automatic setting of a density sensor sensitivity correction value is made. ([READY] light...

  • Page 154: Indication Of Consumable Part Counters

    Oki Data CONFIDENTIAL 5.3.2.8 Indication of consumable part counters This self-diagnosis is practiced to indicate the consumed states of consumable parts. Activate the normal self-diagnostic mode, and press and hold down the [MENU+] key or [MENU-] key, until "CONSUMABLE STATUS" appears in the display section, and then, press the ENTER key.

  • Page 155: Indication Of Printed

    Oki Data CONFIDENTIAL 5.3.2.9 Indication of printed page counters This self-diagnosis is practiced to indicate the current number of printed pages of the printer. Activate the normal self-diagnostic mode, and press and hold down the [MENU+] key or [MENU-] key, until "PRINTER STATUS" appears in the display section, and then, press the ENTER key.

  • Page 156: Setup Of Self-Diagnostic Function

    Oki Data CONFIDENTIAL Press the [BACK] key to terminate the test. (The status of Item 1 is restored.) Indication Set Value Function FACTORY FACTORY MODE For setting the Factory Work mode (Fuse-cut disabled mode). MODE SHIPPING MODE For canceling the Factory Work mode and enabling the fuse-cut function.

  • Page 157: Indication Of Led Head Serial Number

    Oki Data CONFIDENTIAL Press the [BACK] key (except for the status of Item 4.) to terminate the setup. (Status of Item 1 restored) Operation of set value Indication Set Value Function TONER ENABLE Detects. For enabling/disabling toner sensor operation. SENSOR DISABLE Does not detect.

  • Page 158: Details Of Panel Indications

    Oki Data CONFIDENTIAL 5.3.2.13 Details of panel indications LCD (English) Ready Attention Description Level ( means no display in upper line) INITIALIZING The controller side is initializing. Initializing MENU RESETTING Indicates that EEPROM of the controller side is being Initializing reset.
  • Page 159 Oki Data CONFIDENTIAL LCD (English) Ready Attention Description Level ( means no display in upper line) POWER OFF/ON Displays that the NIC program data to update has been Initializing DATA WRITTEN OK written. CHECK DATA Displays that an error takes place while the NIC program...
  • Page 160 Oki Data CONFIDENTIAL LCD (English) Ready Attention Description Level ( means no display in upper line) Varies Varies Collate printing. iii: The number of copy in printing. jjj: Normal COLLATE COPY iii/jjj the total number of printing. When the total number of printing is 1, it is a normal printing display.
  • Page 161 Oki Data CONFIDENTIAL LCD (English) Ready Attention Description Level ( means no display in upper line) Varies Toner amount is low. Displayed in a combination of Warning ORDER %COLOR% TONER (Blink) other message in the first line. (Off) In case of MENU "SYS CONFIG MENU" - "LOW TONER=STOP", ATTENTION LED blinks and the...
  • Page 162 Oki Data CONFIDENTIAL LCD (English) Ready Attention Description Level ( means no display in upper line) Varies The life of the drum (warning). Displayed in a Warning ORDER %COLOR% IMAGE DRUM (Off) combination of other message in the first line. The printer stops at the point when it reaches the drum life (Shifts to error, OFF-LINE.)
  • Page 163 Oki Data CONFIDENTIAL LCD (English) Ready Attention Description Level ( means no display in upper line) Varies Notifies the life of the drum. This is a warning only. Warning %COLOR% DRUM LIFE This appears when the cover was opened and closed just after the drum life error occurred.
  • Page 164 Oki Data CONFIDENTIAL LCD (English) Ready Attention Description Level ( means no display in upper line) Varies Varies Density Adjustment ID ERROR 2; smear due to ID Warning %COLOR% IMAGE DRUM SMEAR failure. ERROR PU firmware does not notify this warning to CU firmware at the time of Shipping Mode.
  • Page 165 Oki Data CONFIDENTIAL LCD (English) Ready Attention Description Level ( means no display in upper line) Varies %TRAY%: The tray is empty. Treated as Warning until Warning %TRAY% EMPTY printing to the empty tray is designated. In this case, Leisus I/F : corresponding bits of both LFTERR and LFTERR2 should be '0'.
  • Page 166 Oki Data CONFIDENTIAL LCD (English) Ready Attention Description Level ( means no display in upper line) Varies Varies PU flush error (Error occurs during the alteration of PU Warning %PUFLASH% FLASH ERROR farm or it failed in the alteration in PU flush of such as LED Head information.)
  • Page 167 Oki Data CONFIDENTIAL C8800 LCD (English) Ready Attention Description Level ( means no display in upper line) INITIALIZING It displays, while not having determined the system Initializing display language immediately after turning on a power supply. If a display language is determined, it will change to the display of Priority 2.
  • Page 168 Oki Data CONFIDENTIAL LCD (English) Ready Attention Description Level ( means no display in upper line) CHECKING SECTORS Displays that a sector of HDD is being checked. Initializing nnn% Check process of the sector is valid to start from "FILE SYS MAINTE2"-"CHK ALL SECTORS" of Admin Menu.
  • Page 169 Oki Data CONFIDENTIAL LCD (English) Ready Attention Description Level ( means no display in upper line) PRINT FONT Varies Varies Printing Font Lists Normal *PDL Only PRINT MENU MAP Varies Varies Printing Menu Maps Normal PRINT FILE LIST Varies Varies Printing File Lists...
  • Page 170 Oki Data CONFIDENTIAL LCD (English) Ready Attention Description Level ( means no display in upper line) Varies Varies Indicates that printing has been suspended for a Normal OPTIMIZING TEMP while due to high temperature of the drum, or the printer is in a wait state to cope with heat at the time of switching narrow paper to wide paper.
  • Page 171 Oki Data CONFIDENTIAL LCD (English) Ready Attention Description Level means no display in upper line) Warning Varies This warning is displayed at Cover Open/Close %COLOR% WASTE TONER or Power OFF/ON after a waste-toner full error FULL. REPLACE TONER (Priority: 321.8) occurs. (Not occur for Black.) Displayed in a combination of other message in the first line.
  • Page 172 Oki Data CONFIDENTIAL LCD (English) Ready Attention Description Level ( means no display in upper line) Varies Notifies the fuser unit is near its life. Warning ORDER FUSER (Off) Moreover, when set as ADMIN MENU "CONFIG MENU"-"NEARLIFE LED"=DISABLE, Attention LED is switched off.
  • Page 173 Oki Data CONFIDENTIAL LCD (English) Ready Attention Description Level ( means no display in upper line) Varies Notifies the life of the drum. This is a warning only. Warning %COLOR% DRUM LIFE This appears when the cover was opened and closed just after the drum life error occurred.
  • Page 174 Oki Data CONFIDENTIAL LCD (English) Ready Attention Description Level ( means no display in upper line) Varies Varies Density Adjustment ID ERROR 2; smear due to ID Warning %COLOR% IMAGE DRUM failure. SMEAR ERROR PU firmware does not notify this warning to CU firmware at the time of Shipping Mode.
  • Page 175 Oki Data CONFIDENTIAL LCD (English) Ready Attention Description Level ( means no display in upper line) Varies The LED head calibration data is missing or invalid. Warning %COLOR% HEAD DATA ERROR Printing can be proceeded without calibrating light radiation. PU firmware does not notify this warning to CU firmware at the time of Shipping Mode.
  • Page 176 Oki Data CONFIDENTIAL LCD (English) Ready Attention Description Level ( means no display in upper line) Varies It indicares the deletion of encrypted authentication Warning DELETING ENCRYPTED JOB print job and saving of deletion request of file. *PDL Only Varies...
  • Page 177 Oki Data CONFIDENTIAL LCD (English) Ready Attention Description Level ( means no display in upper line) PRESS ONLINE SW Varies Varies Invalid data was received. Press the On-line Warning INVALID DATA switch and eliminate the warning. Displayed when unsupported PDL command is received or a spool command is received without HDD.

  • Page 178: Various Types Of Print On The Individual Printer Equipped With Controller

    Oki Data CONFIDENTIAL 5.3.3 Various types of print on the individual printer equipped with controller Menu Map Printing Information on the program versions, controller configuration, network settings, etc., is printed. Operation: 1 Press the MENU+ key several times to cause “INFORMATION MENU” to be displayed.

  • Page 179: Setup After Replacement Of Parts

    Oki Data CONFIDENTIAL Setup after replacement of parts This subsection describes the necessary adjustments to be made when parts have been re- placed. Replaced Part Adjustment LED Head Not necessary Image Drum Cartridge Not necessary (Y, M, C, K) Fuser Unit...
  • Page 180 Oki Data CONFIDENTIAL • To specify a PU Serial Number, enter a 11-digit number prefixed with "0" (single-byte zero). (Notice that, when the PU Serial Number is read, it is a 10-digit number.) On the "PU Serial Number setup" screen, enter the 11-digit number resulting from...
  • Page 181 Oki Data CONFIDENTIAL Note! When the EEPROM (engine control PCB) has been replaced, the service life information of the belt, toner, IDs, etc., is necessarily cleared. Therefore, be aware that the service life management is likely to suffer errors until the next time units are replaced.

  • Page 182: Setup Of Eeprom After Replacement Of Cu Pcb

    PCB and an old one. In this case, the CU Serial No. setup and destination setup are not required. 5.4.2.1 Replacement of EEPROM after replacement of PDL CU PCB(C8800) The EEPROM of the PDL CU PCB is installed in the IC socket. Replace the EEPROM in the following manner: 1.

  • Page 183: Setup Of Destination

    Explanation C8800 are ROMs used in common for domestic and overseas markets. This setting is stored on the EEPROM of the CU PCB. When the version number of the program ROM is changed, the setting will be reset to the default value.

  • Page 184: About The Manual Setup Of Print Density Adjustment

    Oki Data CONFIDENTIAL About the manual setup of Print density adjustment The printer is shipped out of the factory with its automatic density correction mode set to "Auto". However, if that mode is changed to "Manual" by the user, the density setting may be displaced with the use along the time.

  • Page 185: Cleaning

    Oki Data CONFIDENTIAL Cleaning Cleaning Clean the interior and outside of the printer, as needed, using a waste cloth and small vacuum cleaner (hand cleaner). Note! Be careful not to touch the image drum terminals, LED lens array and LED head connectors.
  • Page 186 Oki Data CONFIDENTIAL CLEANINg THE LED HEAD Execute this cleaning if an output shows a light fuzzy print or white stripes, or characters are blurred. (1) Turn OFF the power of the printer. (2) Open the top cover by pressing the OPEN button.

  • Page 187: Cleaning Of Pickup Rollers

    Oki Data CONFIDENTIAL Cleaning of pickup rollers If vertical stripes are observed in the print face, clean the pickup rollers. Note! For cleaning, use a soft piece of cloth to avoid scratching the roller surface. CLEANINg THE FEED ROLLERs AND PAD Execute this cleaning if [391 Paper Jam] is issued frequently.

  • Page 188: Troubleshooting Procedures

    Oki Data CONFIDENTIAL TROUBLESHOOTING PROCEDURES Precautions prior to repair (1) Confirm the basic check items indicated in the User's Manual. (2) Through hearing from the user, obtain information, as far in detail as possible, on the situ- ation concerning the fault.

  • Page 189: Lcd Message List

    189 / 43170003TH Rev.2 FIDENTIAL...
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  • Page 196 43170003TH Rev.2...
  • Page 197 Oki Data CONFIDENTIAL Table 7-1-1(C8800) Operator Alarm (1/11) Code Ready Attention Display on Operator Panel Description Error LOAD MEDIA_SIZE Blink The media type in the tray and the print data do MEDIA_TYPE AND PRESS not match. Load mmmmmmm/pppppp paper ONLINE SWITCH...
  • Page 198 Oki Data CONFIDENTIAL Table 7-1-1(C8800) Operator Alarm (2/11) Code Ready Attention Display on Operator Panel Description LOAD MEDIA_SIZE Blink The size of paper or media type in the tray does Error MEDIA_TYPE AND PRESS not match the print data. ONLINE SWITCH...
  • Page 199 Oki Data CONFIDENTIAL Table 7-1-1(C8800) Operator Alarm (3/11) Code Ready Attention Display on Operator Panel Description LOAD MEDIA_SIZE AND Blink Printing request is issued to an empty MPTray. Error PRESS ONLINE SWITCH If it goes through a definite period of time (PU...
  • Page 200 Oki Data CONFIDENTIAL Table 7-1-1(C8800) Operator Alarm (4/11) Code Ready Attention Display on Operator Panel Description PAPER Blink Density of the destination image for a woven Error ERROR CODE: 422 pattern is greater than that of the woven pattern. A user must take measures such as increasing density of the woven pattern or decreasing density of the input image.
  • Page 201 Error ERROR CODE nnn COLOR TONER to the distribution channel, but the group of REGIONAL MISMATCH signature ID is proper (OKI regional mismatch). As probable missing to measure the amount of toner, the printer notifies error status and stop printing.
  • Page 202 Oki Data CONFIDENTIAL Table 7-1-1(C8800) Operator Alarm (6/11) Code Ready Attention Display on Operator Panel Description GENUINE TONER IS Blink The signature ID of toner cartridge can not be Error RECOMMENDED recognized (Unauthorized third party). ERROR CODE nnn :NON GENUINE...
  • Page 203 Oki Data CONFIDENTIAL Table 7-1-1(C8800) Operator Alarm (7/11) Code Ready Attention Display on Operator Panel Description OPEN FRONT COVER Blink Paper jam occurred during paper feeding from Error ERROR CODE:PAPER JAM tray. Error 391 : Tray1 Error 392 : Tray2 OPEN FRONT COVER Blink Jam has occurred in paper path.
  • Page 204 Oki Data CONFIDENTIAL Table 7-1-1(C8800) Operator Alarm (8/11) Code Ready Attention Display on Operator Panel Description CHECK FUSER Blink The engine detects the fuser unit error. Error ERROR CODE nnn:FUSER MISSING It recovers, when a value is able to be normally read by re-reading after cover closing.
  • Page 205 Oki Data CONFIDENTIAL Table 7-1-1(C8800) Operator Alarm (9/11) Code Ready Attention Display on Operator Panel Description CHECK DATA An error has happened while the printer is writing Error DATA WRITE ERROR the NIC download data. DLCODE %DLCODE% 1: Memory allocation error...
  • Page 206 Oki Data CONFIDENTIAL Code Ready Attention Display on Operator Panel Description POWER OFF/ON Blink A fatal error occurred. Fatal ERROR CODE:FATAL_ERROR For more information, see "Service Calls List." 002~011 nnnnnnnn nnnnnnnn nnnnnnnn 'nnnnnnnn' specifies the detailed error cause. * Fatal Error is not available in national language.
  • Page 207 Oki Data CONFIDENTIAL Table 7-1-1(C8800) Operator Alarm (11/11) Code Ready Attention Display on Operator Panel Description Blink The area specified for tampering verification is Error ERROR CODE: nnn ERROR incorrect. This error occurs when an image is pushed away or the unprintable area is specified.
  • Page 208 Is CU Fan connector set properly? Connect properly. 051:Error(C8800) Abnormal CPU Is error recovered by replacing Replace fan. cooling fan on CU fan? Replace CU PCB. board. Memo: The name of the CU board for C8800 is TBH. 208 / 43170003TH Rev.2...
  • Page 209 Is the error issued again? Replace the CU PCB. [On the C8800] Is the CU Assy installed properly? Redo the installation properly. Replace the CU PCB. POWER OFF/ON Video Error Fault Is CU assembly set properly? Set properly.
  • Page 210 Oki Data CONFIDENTIAL Table 7-1-2 Service Call Error (3/6) Message Cause Error Description Solution SERVICE CALL Low-voltage Is fan in low-voltage power supply Check connections for 122:Error power supply fan unit operating? connector of fan. error. Replace low-voltage Low-voltage power supply.
  • Page 211 Oki Data CONFIDENTIAL Table 7-1-2 Service Call Error (4/6) Message Cause Error Description Solution SERVICE CALL Fuser unit Is fuser unit set properly? After cleaning for fuser 155:Error fuse cannot be connector, reset. disconnected. Does error reoccur? Turn power ON again.
  • Page 212 Oki Data CONFIDENTIAL Table 7-1-2 Service Call Error (5/6) Message Cause Error Description Solution POWER OFF/ON System Memory Turn power ON again. 190:Error Overflow. Add option RAM DIMM. Does error reoccur? SERVICE CALL PU Firmware Error occurered while writing over...
  • Page 213 Oki Data CONFIDENTIAL Table 7-1-2 Service Call Error (6/6) Message Cause Error Description Solution POWER OFF/ON Duplex FANO FAN error inside the Duplex. Check to see if the 918:Error Alarm Detection Duplex is properly installed. Is the error issued again when the...

  • Page 214: Preparing For Troubleshooting

    Oki Data CONFIDENTIAL 7.5.2 Preparing for troubleshooting (1) LCD Display Malfunction ....................216 (1-1) Nothing is displayed in LCD ..................216 (1-2) The first line is black display in LCD ..............217 (1-3) PLEASE WAIT (The display changes to “COMMUNICATION ERROR” if you leave them as they are) ................217 (1-4) An error message related to the operation panel is displayed.
  • Page 215 Oki Data CONFIDENTIAL (11) Motor Fan Error(Error 120,127,051) ................245 (11-1) Low voltage power unit fan or CU fan does not rotate right after turning on the power .......................245 (11-2) DUPLEX fan does not rotate in DUPLEX printing ..........245 (11-3) Every fan in the machine does not rotate ............245 (12) Print Speed is Slow (Low Performance) .................245...

  • Page 216: Lcd Display Malfunction

    Oki Data CONFIDENTIAL 7.5.2.(1) LCD Display Malfunction Memo For numbers of through after each connector name, refer to 7.5.2 (18) “Connection Diagrams”. (1-1) Nothing is displayed in LCD Confirmation Items Confirmation Tasks Action at NG (1-1-1) Confirm fuse F5 (fuse) of PU PCB Check to see if F5 is blown out.

  • Page 217: The First Line Is Black Display In Lcd

    Oki Data CONFIDENTIAL (1-2) The first line is black display in LCD Confirmation Items Confirmation Tasks Action at NG (1-2-1) Check of connections Connection between low- Check to see if the cord from the lower-voltage power Redo the insertion voltage power supply unit supply is connected properly to the POWER connector of the cord properly.

  • Page 218: An Error Message Related To The Operation Panel Is Displayed

    Oki Data CONFIDENTIAL (1-4) An error message related to the operation panel is displayed. Confirmation Items Confirmation Tasks Action at NG (1-4-1) Error messages Error messages Check the details in the Error Message Table. Follow the instructions. (1-5) “RAM CHECK” or “INITIALIZING” are displayed...

  • Page 219: Irregular Operation Of The Device After Turning On The Power

    Oki Data CONFIDENTIAL 7.5.2.(2) Irregular Operation of the device after turning on the power (2-1) No operation Confirmation Items Confirmation Tasks Action at NG (2-1-1) Check of parts related to power supply AC power supplied to the Check the supply voltage of the AC power.

  • Page 220: Abnormal Sound

    Oki Data CONFIDENTIAL (2-2) Abnormal sound Confirmation Items Confirmation Tasks Action at NG (2-2-1) Check for motor step-out (Abnormal driver) Operating state of motors Use the self-diagnostic mode to check to see if the Replace the PU motors are operating normally.

  • Page 221: Abnormal Odor

    Oki Data CONFIDENTIAL (2-3) Abnormal odor Confirmation Items Confirmation Tasks Action at NG (2-3-1) Location of source of foul smell Fuser unit Take out the fuser unit, and check for the smell. Conduct (2-3-2). Low voltage power supply Take out the lower-voltage power supply unit, and check...

  • Page 222: Error Number And Jam Location At Paper Jam

    Oki Data CONFIDENTIAL (3) Error number and jam location at paper jam Error No. Name Reference Corresponding Sensor Jam Release Method Duplex reversal DUP-IN, DUP-R Jam release method Duplex input DUP-F, DUP-R Jam release method Feed error at Duplex Jam release method...
  • Page 223 Oki Data CONFIDENTIAL JAM RELEASE METHOD REMOVING THE JAMMED PAPER FRONT COVER SECTION (CODES: 372, 380, 390, 391, 400) Open the front cover, and if the leading end or trailing end of the jammed paper is visible, pull out the paper slowly. If code 400 is issued, the paper may be unloaded automatically. If that is the case, opening and closing of the cover will clear the error.
  • Page 224 Oki Data CONFIDENTIAL JAM RELEASE METHOD FUSER UNIT SECTION (CODES: 381, 382, 383,385) Possible to get burned. The fuser unit can be very hot. Be careful not to touch it. If the unit remains hot, do not hasten to work, but wait, until after the unit has cooled down a little, and then remove the paper.
  • Page 225 Oki Data CONFIDENTIAL (4) Hold the fuser unit again by the handle and put it gently back in the printer. (5) Push the lock levers (blue) of the fuser unit toward the rear, and fasten the unit. Handle Fuser unit locking lever...
  • Page 226 Oki Data CONFIDENTIAL (2) Take out the image drum cartridges (4), and place them on a flat table. (3) Cover the image drum cartridges thus taken out with a black sheet of paper. Note! • The image drums (green tubular parts) are extremely vulnerable. Use good caution in handling them.
  • Page 227 Oki Data CONFIDENTIAL WHEN NEITHER THE LEADING END NOR THE TRAILING END IS VIS- IBLE First slide the jammed paper into the direction of the arrow, and then, pull it out slowly. Fuser unit Paper WHEN THE TRAILING END OF THE PAPER IS VISIBLE Pull the jam release levers (two places) on the fuser unit up and pull out the jammed paper.
  • Page 228 Oki Data CONFIDENTIAL JAM RELEASE METHOD TWO-SIDED PRINT UNIT SECTION (CODES: 370, 371, 373) (1) Open the two-sided print unit cover by pushing the jam releasing lever of the two-sided print unit section. Duplex unit cover Jam release lever (2) Take out the jammed paper.

  • Page 229: Paper Feed Jam(Error 391:1St Tray)

    Oki Data CONFIDENTIAL 7.5.2.(3) Paper Feed Jam(Error 391:1st Tray) (3-1) Paper feed jam occurs right after turning on the power (1st Tray) Confirmation Items Confirmation Tasks Action at NG (3-1-1) Check of state of running route Paper running route in front...
  • Page 230 Oki Data CONFIDENTIAL Confirmation Items Confirmation Tasks Action at NG (3-2-4) Check of connections Feed motor drive cord Check the connected state of the cord. Redo the connection Check for incomplete connection or skew insertion, and properly. check the cord visually to see if it has any assembling Replace the cord problem.

  • Page 231: Paper Feed Jam (Error 390:Multi-Purpose Tray)

    Oki Data CONFIDENTIAL 7.5.2.(4) Paper Feed Jam (Error 390:Multi-purpose Tray) (4-1) Paper feed jam occurs right after turning on the power (Multi-purpose Tray) Confirmation Items Confirmation Tasks Action at NG (4-1-1) Check of state of running route Paper running route in front...

  • Page 232: Paper Feed Jam Occurs Right After Paper Feeding Starts (Multi-Purpose Tray)

    Oki Data CONFIDENTIAL (4-2) Paper feed jam occurs right after paper feeding starts (Multi-purpose Tray) Confirmation Items Confirmation Tasks Action at NG (4-2-1) Check of state of running route Paper running route in Check to see if there is paper jammed on the running...

  • Page 233: Paper Path Jam(Error 381)

    Oki Data CONFIDENTIAL 7.5.2.(5) Paper Path Jam(Error 381) (5-1) Paper path jam occurs right after turning on the power Confirmation Items Confirmation Tasks Action at NG (5-1-1) Check of state of running route Paper running route in front Check to see if there is paper jammed on the running...

  • Page 234: Paper Path Jam Occurs Right After Feeding Paper

    Oki Data CONFIDENTIAL (5-2) Paper path jam occurs right after feeding paper Confirmation Items Confirmation Tasks Action at NG (5-2-1) Check of state of running route Paper running route on the Remove the ID unit, and check to see if there is paper...
  • Page 235 Oki Data CONFIDENTIAL Confirmation Items Confirmation Tasks Action at NG (5-2-4) Check of connections Feed motor drive cord, Check the connected states of the cords. Correct the ID motor drive cord, belt Check for any incomplete connection or skew insertion connection properly.

  • Page 236: Paper Path Jam Occurs In A Path Route

    Oki Data CONFIDENTIAL (5-3) Paper path jam occurs in a path route Confirmation Items Confirmation Tasks Action at NG (5-3-1) Check of operating state of motors Feed motor, belt motor, ID Conduct the Motor and Clutch Test of the self-diagnostic...

  • Page 237: Paper Path Jam Occurs Right After Reaching The Fuser Unit

    Oki Data CONFIDENTIAL (5-4) Paper path jam occurs right after reaching the fuser unit Confirmation Items Confirmation Tasks Action at NG (5-4-1) Check of operating state of motors Fuser motor Conduct the Motor and Clutch Test of the self-diagnostic Replace the PU mode, and check to see if the fuser motor operates PCB.

  • Page 238: Paper Exit Jam(Error 382)

    Oki Data CONFIDENTIAL 7.5.2.(6) Paper Exit Jam(Error 382) (6-1) Paper exit jam occurs right after turning on the power Confirmation Items Confirmation Tasks Action at NG (6-1-1) Check of state of running route Paper running route in Check to see if there is paper jammed on the running...

  • Page 239: Paper Exit Jam Occurs Right After Feeding Paper

    Oki Data CONFIDENTIAL (6-2) Paper exit jam occurs right after feeding paper Confirmation Items Confirmation Tasks Action at NG (6-2-1) Check of state of running route Face-up stacker cover Check to see if the cover is completely open or closed.

  • Page 240: Duplex Print Jam(Error 370,371,372,373,383)

    Oki Data CONFIDENTIAL 7.5.2.(7) Duplex Print Jam(Error 370,371,372,373,383) (7-1) Duplex print jam occurs right after turning on the power Confirmation Items Confirmation Tasks Action at NG (7-1-1) Check of state of running route Paper running route in Check to see if there is paper jammed on the running...

  • Page 241: Duplex Print Jam Occurs In Reverse Of The Paper

    Oki Data CONFIDENTIAL Confirmation Items Confirmation Tasks Action at NG (7-2-4) Check of operating state of motor Duplex motor Conduct the Motor and Clutch Test of the self-diagnostic Replace the V7Y mode, and check the operation of the duplex motor.

  • Page 242: Paper Size Error (Error 400)

    Oki Data CONFIDENTIAL 7.5.2.(8) Paper Size Error (Error 400) (8-1) Paper jam occurs when the end of paper is near IN1 sensor. Confirmation Items Confirmation Tasks Action at NG (8-1-1) Check of state of paper feed Multiple feed of paper...

  • Page 243: Id Unit Up-Down Error(Service Call 140-143)

    Oki Data CONFIDENTIAL 7.5.2.(9) ID Unit Up-Down Error(Service Call 140-143) (9-1) An error occurs in the operation of ID Unit Up Confirmation Items Confirmation Tasks Action at NG (9-1-1) Check for load in the ascent Load in installing/removing Check to see if any abnormal load is felt in installing or...

  • Page 244: 10) Fuser Unit Error(Error 170-177)

    Oki Data CONFIDENTIAL 7.5.2.(10) Fuser Unit Error(Error 170-177) (10-1) An error occurs right after turning on the power Confirmation Items Confirmation Tasks Action at NG (10-1-1) Malfunction of thermistors Upper thermistor, lower Check to see if the thermistors are short-circuited or...

  • Page 245: 11) Motor Fan Error(Error 120,127,051)

    Oki Data CONFIDENTIAL 7.5.2.(11) Motor Fan Error(Error 120,127,051) (11-1) Low voltage power unit fan or CU fan does not rotate right after turning on the power Confirmation Items Confirmation Tasks Action at NG (11-1-1) Connections and laying of cords Connections and laying of Check to see if the connectors are properly connected.

  • Page 246: 13) Option Unit Is Not Recognized

    Oki Data CONFIDENTIAL 7.5.2.(13) Option unit is not recognized (13-1) Duplex unit is not recognized Confirmation Items Confirmation Tasks Action at NG (13-1-1) Duplex PCB Duplex unit Check to see if the Duplex unit in use conforms to the Replace the Duplex unit.

  • Page 247: 14) Led Head Is Not Recognized(Error 131,132,133,134)

    Oki Data CONFIDENTIAL 7.5.2.(14) LED head is not recognized(Error 131,132,133,134) (14-1) Service Call 131-134(LED HEAD Missing) Confirmation Items Confirmation Tasks Action at NG (14-1-1) Check of connections Connected state between Check visually the connected state of the FFC. Redo the connection CU PCB connector and properly.

  • Page 248: 15) Toner Cartridge Is Not Recognized(Error 540,541,542,543)

    Oki Data CONFIDENTIAL 7.5.2.(15) Toner cartridge is not recognized(Error 540,541,542,543) (15-1) Errors caused by consumables Confirmation Items Confirmation Tasks Action at NG (15-1-1) Installed state of consumables ID units and toner Are the ID units installed in the right positions? Check to...

  • Page 249: 16) Fuse Cutout Error (Error 150-155)

    Oki Data CONFIDENTIAL (15-3) Errors caused by machine defects Confirmation Items Confirmation Tasks Action at NG (15-3-1) Loading on ID unit ID Unit Is a heavy load imposed on the ID unit, for example, Replace the ID unit. because the waste toner belt was ruptured?

  • Page 250: 17) Dew Condensation Errors (Error 123)

    Oki Data CONFIDENTIAL 7.5.2.(17) Dew Condensation Errors (Error 123) (17-1) Dew Condensation Confirmation Items Confirmation Tasks Action at NG (17-1-1) Check of connections Connection between PU Check to see if the 13-pin FFC is properly plugged into Correct the insertion...

  • Page 251: 18) Connection Diagrams

    Oki Data CONFIDENTIAL 7.5.2.(18) Connection Diagrams Internal temperature Cover-open Fuser thermistor switch FAN1 RFID antenna Board-POL Fuser right end FAN Relay Environmental Shutter sensor solenoid Relay High-voltage power supply Fuser motor (DC) ID UP/DOWN sensor RFID R/W Board-LUM Belt motor...

  • Page 252: Image Problem Troubleshooting

    Oki Data CONFIDENTIAL 7.5.3 Image Problem Troubleshooting (1) Color is totally pale (Fig.7.2 A) ..................252 (1-1) Color is pale ......................252 (2) Background is dirty (Fig.7.2 B)..................253 (2-1) Background is dirty (partly) ...................253 (2-2) Background is dirty (totally) ..................253 (3) Blank Print (Fig.7.2 C) ....................254 (3-1) Blank on the whole page ..................254...

  • Page 253: Color Is Totally Pale (Fig.7.2 A)

    Oki Data CONFIDENTIAL Color is totally pale (Fig.7.2 A) 7.5.3.(1) (1-1) Color is pale Confirmation Items Confirmation Tasks Action at NG (1-1-1) Toner Remaining quantity of toner Check to see if "ORDER TONER" or "REPLACE Replace the toner TONER" appears on the operator panel.

  • Page 254: Background Is Dirty (Fig.7.2 B)

    Oki Data CONFIDENTIAL Background is dirty (Fig.7.2 B) 7.5.3.(2) (2-1) Background is dirty (partly) Confirmation Items Confirmation Tasks Action at NG (2-1-1) ID unit Drum exposed to light Check to see if the ID unit has been left in an Replace the ID unit.

  • Page 255: Blank Print (Fig.7.2 C)

    Oki Data CONFIDENTIAL Blank Print (Fig.7.2 C) 7.5.3.(3) (3-1) Blank on the whole page Confirmation Items Confirmation Tasks Action at NG (3-1-1) State of toner Remaining quantity of toner Check to see if a sufficient quantity of toner remains in Replace the toner the toner cartridge.

  • Page 256: Vertical Lines Are Printed

    Oki Data CONFIDENTIAL 7.5.3.(4) Vertical lines are printed (4-1) Thin vertical lines (with color) (See Fig.7.2 D) Confirmation Items Confirmation Tasks Action at NG (4-1-1) State of ID unit Filming of ID unit Check to see if the print was conducted in the absence Replace the toner of toner.

  • Page 257: Cyclic Print Trouble (Refer To Fig.7.2 E)

    Oki Data CONFIDENTIAL Cyclic Print Trouble (Refer to Fig.7.2 E) 7.5.3.(5) (5-1) Vertical cyclic print trouble Confirmation Items Confirmation Tasks Action at NG (5-1-1) Periodicity Image drum Check to see if the periodicity is 94.3 mm or not. Replace the ID unit.

  • Page 258: Color Registration Is Wide

    Oki Data CONFIDENTIAL 7.5.3.(6) Color registration is wide. (6-1) "IN ADJUSTING COLOR REGISTRATION" is shown only a short time Confirmation Items Confirmation Tasks Action at NG (6-1-1) Color registration result Color registration time Execute REG ADJ UST TEST in the self-diagnostic Replace the sensor (Approx.

  • Page 259: Solid Black Print

    Oki Data CONFIDENTIAL 7.5.3.(7) Solid Black Print (7-1) Solid black on a full page Confirmation Items Confirmation Tasks Action at NG (7-1-1) High-voltage contact state CH terminal Check visually from above to see if the terminal Replace the terminal extending from the printer is properly in contact with the of the printer side.

  • Page 260: Actions After Forced Initialization Of Flash

    Oki Data CONFIDENTIAL 7.5.4 Actions after forced initialization of Flash This subsection explains the actions to be taken after Flash has been subjected to forced ini- tialization. If the Flash is forcibly initialized, the following data is deleted, making it impossible to use the network.

  • Page 261: Network Troubleshooting

    Oki Data CONFIDENTIAL 7.5.5 Network Troubleshooting (1) Cannot print from Utility. Confirmation Items Confirmation Tasks Action at NG (1) Check of LINK light Check of LINK light Check to see if the LINK light (green) is on. Redo the connection Check to see if the HUB and the printer are properly of the network cable.

  • Page 262: Check Of Fuses

    Oki Data CONFIDENTIAL 7.6 Check of fuses If any of the following errors is issued, check the corresponding fuse on the CU control PCB (SP2 PCB), PU control PCB or high-voltage power supply PCB. (See Table 7-6.) Table 7-6 Fuse Error...

  • Page 263: Table Of Correspondence Between Paper Cassette Switch And Paper Sizes

    Oki Data CONFIDENTIAL Table of correspondence between paper cassette switch and paper sizes Bit Number Dial Indication Size TRAY1 TRAY2 No cassette No cassette A4/ other A4/ other A6 SEF Other A5 LEF A5 LEF Executive Executive Legal Legal B5 LEF...

  • Page 264: Connection Diagrams

    Oki Data CONFIDENTIAL CONNECTION DIAGRAMS Check of resistance values 264 / 43170003TH Rev.2...
  • Page 265 Oki Data CONFIDENTIAL 265 / 43170003TH Rev.2...
  • Page 266 Oki Data CONFIDENTIAL 266 / 43170003TH Rev.2...
  • Page 267 Oki Data CONFIDENTIAL 267 / 43170003TH Rev.2...

  • Page 268: Component Layout

    Oki Data CONFIDENTIAL Component layout (1) Print engine controller PCB (PU PCB) Component side R27 R25 ARMORED OPAMP4 HVOLT RELAY BELT HSOL FANSOL POWFAN POWER OPTION 268 / 43170003TH Rev.2...
  • Page 269 Oki Data CONFIDENTIAL Solder side R501 R507 R506 R502 R608 R504 R503 C501 R505 R512 C508 C562 R612 C510 C563 R613 C564 C509 C507 R614 C565 R615 R644 R513 IC501 R649 R650 C566 C572 C526 C524 C525 C523 C520 R520...
  • Page 270 Oki Data CONFIDENTIAL (2) Main controller PCB (SP2 PCB) Component side 270 / 43170003TH Rev.2...
  • Page 271 Oki Data CONFIDENTIAL Solder side 271 / 43170003TH Rev.2...
  • Page 272 Oki Data CONFIDENTIAL (3) Main controller (TBM PCB) C8800 : Centronics model Component side 272 / 43170003TH Rev.2...
  • Page 273 Oki Data CONFIDENTIAL Solder side 273 / 43170003TH Rev.2...
  • Page 274 Oki Data CONFIDENTIAL (4) Host USB PCB (TBC PCB) used only in C8800 Component side Solder side 274 / 43170003TH Rev.2...
  • Page 275 Oki Data CONFIDENTIAL (5) Junction PCB (P6Y PCB) Component side DENS FUSERIN Solder side BFUSE BFUCUT 275 / 43170003TH Rev.2...
  • Page 276 Oki Data CONFIDENTIAL (6) Duplex print control PCB (V7Y-4 PCB) Component side SNS12 SNS03 SNS4 Solder side R569 R568 FET501 IC503 R578 IC502 R527 J524 J523 R520 R580 R579 J518 C534 C533 R577 IC501 J504 R510 R508 R507 R509 276 /...
  • Page 277 Oki Data CONFIDENTIAL (7) Second tray control PCB (V7Y-3 PCB) Component side SNS12 SNS03 Solder side R569 R568 R568 IC503 R578 IC502 R527 J524 J523 R520 R580 R579 J518 C533 C534 R577 IC501 J504 R510 R508 R507 R509 277 /...
  • Page 278 Oki Data CONFIDENTIAL (8) Control panel PCB (PRP PCB) Component side Solder side (9) Toner-Low sensor PCB (PRZ PCB) KTNR YTNR MTNR CTNR (10) Inlet sensor PCB (RSF PCB) 278 / 43170003TH Rev.2...
  • Page 279 Oki Data CONFIDENTIAL (11) Color adjustment sensor PCB (PRC PCB) (12) High-voltage power supply PCB TR-K TR-Y TR-M TR-C (13) Low-voltage power supply PCB To PU PCB To Low POWER connector voltage FAM Short-circuit plug To fuser unit for CN6...
  • Page 280 Oki Data CONFIDENTIAL (14) ID unit ID unit (For consumables) Contacts Fuse Toner-Low sensor PCB (PRZ PCB) Contacts ID unit (15) Transfer belt unit Transfer belt unit (For consumables) Contacts Fuse Driver junction PCB (P6Y PCB) Contacts Transfer belt unit...

  • Page 281: F/W Version

    Oki Data CONFIDENTIAL F/W version. 8.3.1 ROM management number Date DCO N0. CU F/W 43678201FY03 NIC F/W 43678201FY02 Loader Remark Revision 43436804FY01 Revision File Rev. NIC F/W Web Page File Rev. Revision File Rev. E1.03 6.51 W6.51 L1.53 E1.05 6.51 W6.52...

  • Page 282: Stamped Maintenance Board Parts Markings

    Oki Data CONFIDENTIAL 8.3.3 Stamped maintenance board parts markings A specified number has been stamped on the maintenance part marking area of each CU-PCB according to the table below. IC_VREF CP12 DLMODE CN101 GND1 C154 2.5V_2 Stamp area Series Stamp No.

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