Oki C911 User Manual
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Oki C911 User Manual

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See also: Maintenance Manual
User's Manual
Troubleshooting/Daily
Maintenance Manual
Read for any points that
are not understood, or
for maintenance
C911
C931
C941
C942
ES9411
ES9431
ES9541
ES9542
Pro9431
Pro9541
Pro9542
1
Troubleshooting
2
Maintenance
Index

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Table of Contents
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Summary of Contents for Oki C911

  • Page 1 Troubleshooting User’s Manual Troubleshooting/Daily Maintenance Manual Maintenance Read for any points that are not understood, or Index for maintenance C911 C931 C941 C942 ES9411 ES9431 ES9541 ES9542 Pro9431 Pro9541 Pro9542...

  • Page 2: Manual Configuration

    Manual Configuration The following user manuals are enclosed with the product. The e-manual is stored as software on DVD-ROM. Read this first Step • Checking the product • Parts nomenclature and functions • Using the device to its fullest Opening the box and installing the printer Set-up Guide •...

  • Page 3: Reading The Manual

    Reading the Manual Symbols Note z These are cautions and restrictions for the correct operation of the device. Make sure to read to avoid misoperation. Memo z Knowledge of the information before using the device is useful and can act as a reference. Reading is recommended. Reference z These are the reference pages.

  • Page 4: Illustrations

    Illustrations Screens The printer illustrations used herein show the The images of the control panel and PC used C931 model unless otherwise specified. herein are examples. The images may differ from actual products and screens. Illustrations may differ from the actual product. - 4 -...

  • Page 5: Inscriptions

    Inscriptions The following inscriptions are used in this manual. ⿟ C911dn → C911 ⿟ C931dn → C931 ⿟ C941dn → C941 ⿟ C942dn → C942 ⿟ ES9411dn → ES9411 ⿟ ES9431dn → ES9431 ⿟ ES9541dn → ES9541 ® ® ⿟ Microsoft Windows 7 64-bit Edition operating system →...

  • Page 6: Table Of Contents

    Contents Manual Configuration ................2 Reading the Manual ................3 Symbols ........................3 Keys, Buttons, and Symbols..................3 Illustrations ......................4 Screens........................4 Inscriptions ......................5 Troubleshooting ..............9 Troubleshooting solutions procedure ..........10 Paper jams ..................11 Checking messages (if a paper jam occurs) ............11 Removing jammed paper ..................
  • Page 7 Cleaning the Transfer Roller Unit and Paper Transfer Path ........96 Cleaning the Pinch Roller ..................99 Moving and shipping the device ............100 Moving the device ..................... 100 Shipping the device ..................100 Index ..................102 - 7 -...
  • Page 8 „ Memo - 8 -...

  • Page 9: Troubleshooting

    Troubleshooting Troubleshooting solutions procedure … 10 Paper jams ……………………………………… 11 If paper messages are displayed ……… 36 If replace consumables messages are displayed ………………………………… 38 If other messages are displayed ……… 40 Printing Troubles …………………………… 46 - 9 -...

  • Page 10: Troubleshooting Solutions Procedure

    Troubleshooting solutions procedure Troubleshooting solutions procedure This chapter describes the procedure for solving the problems occurred while using the printer. If you are unable to solve the problem with this procedure, contact your dealer. Is error message or error code displayed on the control panel? If it is displayed If it is not displayed When there is a display of paper jam, refer...

  • Page 11: Paper Jams

    Paper jams Paper jams This section describes the procedure when a paper is jammed inside the printer, or when paper is remaining inside the printer even after removing it. Checking messages (if a paper jam occurs) When a paper is jammed inside the printer, or when paper is remaining inside the printer even after removing it, a message notifying paper jam will appear on the liquid crystal panel of the operation panel, and the <ATTENTION>...

  • Page 12: Error Code

    Paper jams Error code Message displayed on the liquid crystal Location of displayed after Reference Category panel paper jam pressing the pages [HELP] button Open Right Side Cover Paper jam in 380, 390 page 14 Paper Jam the vicinity Please see HELP for details of Right Side Cover Open [TRAY]* Side Cover...
  • Page 13 Paper jams „ Operating the Help screen Press the scroll button The next page will appear, and Pressing the [HELP] button in the operation panel solution procedure for paper jam will display the solution method. You can easily remove the paper according to the guidance. and corresponding animation will be displayed.

  • Page 14: Removing Jammed Paper

    Paper jams Removing jammed paper Slowly remove the remaining paper. Removing paper jam in the vicinity of Right Side Cover „ Error code: 380, 390, 637 If paper is set in the MP tray, remove it and close the tray. Close the right side cover.
  • Page 15 Paper jams Removing paper jam in the exit Pull the set lever ( ) on the right side of the paper supporter ( ) towards unit yourself. „ Error code: 381, 638, 639 CAUTION Possible to get burned. Work carefully as the temperature of fuser unit is high.
  • Page 16 Paper jams Check inside of the printer, and slowly Push down the fuser unit's jam release remove the remaining paper. lever (blue). If there is remaining paper in the fuser If there is no remaining paper in the unit then pull up the fuser unit's jam fuser unit then pull up the fuser unit's release lever (blue).
  • Page 17 Paper jams Raise the jam release lever of the fuser If the paper winds around the decal roller, remove the decal unit by turning the unit. thumbscrews at both ends of the decal unit to the left, and remove the paper. Note z Be careful not to drop the thumbscrew into the device when removing.
  • Page 18 Paper jams Return the decal unit to its original Push down the fuser unit's lock lever position, and fix it with two (blue). thumbscrews. Note z Be careful not to drop the thumbscrew into the device when fixing. ① ② If paper is set in the MP tray, remove it and close the tray.
  • Page 19 Paper jams Lift the opener ( ), and open the right Close the right side cover. side cover. Open the MP tray. Pull the set leve ( ) on the right side Slowly remove the remaining paper. of the paper supporter ( ) towards yourself.
  • Page 20 Paper jams Removing paper jam in the Match the paper guide with the paper. vicinity of the fuser unit „ Error code: 382, 383, 389 CAUTION Possible to get burned. Work carefully as temperature of fuser unit is high. Ensure to hold the handle when lifting. When it is hot, wait until it cools down before starting the work.
  • Page 21 Paper jams If there is remaining paper in the fuser If there is no remaining paper in the unit then pull up the fuser unit's jam fuser unit then pull up the fuser unit's release lever (blue). lock lever (blue). Ensure to slowly pull the remaining Hold the fuser unit handle with both paper towards the printer body...
  • Page 22 Paper jams If the paper winds around the decal roller, Return the decal unit to its original remove the decal unit by turning the position, and fix it with two thumbscrews at both ends of the decal thumbscrews. unit to the left, and remove the paper. Note Note z Be careful not to drop the thumbscrew into the...

  • Page 23: Printing Unit

    Paper jams „ Removing paper from the 2-Sided Push down the fuser unit's lock lever (blue). Printing unit Pull out the 2-Sided Printing unit, lift it up a little with both hands, and remove Put the exit unit back into the printer. Note z Do not pull the 2-Sided Printing unit out in one shot.
  • Page 24 Paper jams Removing paper from the vicinity Put the 2-Sided Printing unit back into the printer. of Tray Side Cover „ Error code: 391, 392, 393, 394, 395, 631, 632, 633, 634, 635 Example) In the case of Tray 1 Open the tray side cover where the error is displayed.
  • Page 25 Paper jams Removing paper from the vicinity Close the Tray 1 side cover. of the 2-Sided Printing unit „ Error code: 370, 371, 373, 640, 641, 642 Pull out the 2-Sided Printing unit, lift it up a little with both hands, and remove When you cannot see the jammed paper in the 2-Sided Printing unit inside the printer, put the 2-Sided Printing unit...
  • Page 26 Paper jams Put the 2-Sided Printing unit back into Lift opener ( ) of the exit unit, and pull the printer. out the exit unit. Check inside of the printer, and slowly remove the remaining paper. - 26 -...
  • Page 27 Paper jams If the paper tip is not visible, pull up If the paper winds around the decal roller, remove the decal unit by turning the the fuser unit's lock lever (blue). thumbscrews at both ends of the decal unit to the left, and remove the paper. Note z Be careful not to drop the thumbscrew into the device when removing.
  • Page 28 Paper jams Return the decal unit to its original Hold the knob, pull up the transfer roller position, and fix it with two unit, lift the paper guide, and remove thumbscrews. the remaining paper. Note z Be careful not to drop the thumbscrew into the device when fixing.
  • Page 29 Paper jams Hold the knob, push down the transfer Push down the fuser unit's lock lever roller unit. (blue). Hold the fuser unit handle with both Put the exit unit back into the printer. hands, and set to the exit unit. - 29 -...
  • Page 30 Paper jams Removing paper from the Put the 2-Sided Printing unit back into the printer. vicinity of the lower side of 2-Sided Printing unit „ Error code: 375, 650 Pull out the 2-Sided Printing unit, lift it up a little with both hands, and remove Remove the remaining paper from the printer.
  • Page 31 Paper jams Lift opener ( ) of the exit unit, and If the paper tip is not visible, pull up remove the remaining paper. the fuser unit's lock lever (blue). Hold the fuser unit handle with both hands, and remove it onto a flat surface.
  • Page 32 Paper jams If the paper winds around the decal roller, Return the decal unit to its original remove the decal unit by turning the position, and fix it with two thumbscrews at both ends of the decal thumbscrews. unit to the left, and remove the paper. Note Note z Be careful not to drop the thumbscrew into the device...
  • Page 33 Paper jams Hold the knob, pull up the transfer roller Hold the knob, push down the transfer unit, lift the paper guide, and remove roller unit. the remaining paper. Hold the fuser unit handle with both hands, and set to the exit unit. Push down the fuser unit's lock lever (blue).
  • Page 34 Paper jams Removing paper from the Put the exit unit back into the printer. vicinity of Left Side Cover „ Error code: 384, 651 Open the left side cover. Slowly remove the remaining paper. Close the left side cover. - 34 -...
  • Page 35 Paper jams „ When paper jam occurs frequently Check the following when paper jam occurs very frequently. z Is the feeding paper roller dirty? (“Cleaning feed rollers”(P.93)) z Is the paper guide set correctly? (Refer to "Setting the Paper in the Basic") z Is the paper set after flipping through it carefully? (Refer to "Setting the Paper in the Basic")

  • Page 36: If Paper Messages Are Displayed

    If paper messages are displayed If paper messages are displayed When paper type/size set in the printer tray differs from the printer driver specification, message such as "Replace paper" and "Paper size error has occurred" will appear, and the <ATTENTION> lamp will blink.
  • Page 37 If paper messages are displayed Message displayed on the Error <ATTENTION> Category Causes and Troubleshooting liquid crystal panel code lamp Paper size Remove Excess Paper and Reset Tray Blinking The paper in the tray may exceed the Error [TRAY] maximum limit, or the paper tray may Please see HELP for details need to be reset.

  • Page 38: If Replace Consumables Messages Are Displayed

    Black Toner Empty page 64 Cartridge Black Press the [HELP] button, and Please see HELP for details solve according to the guidance shown on the Help screen. (C911/C931/C941/ES9411/ES9431/ ES9541/Pro9431/Pro9541 only) Install Toner Printing Blinking Toner color shown in the page 64 [COLOR] 4100 message is empty.
  • Page 39 If replace consumables messages are displayed Message displayed on the Error <ATTENTION> Causes and Reference Category liquid crystal panel code lamp Troubleshooting pages Image Install [COLOR] New Image Drum 6800 Blinking The lifespan of the image drum page 66 Drum Printing disabled due to low 6801 has been reached.

  • Page 40: If Other Messages Are Displayed

    If other messages are displayed If other messages are displayed Other messages and error codes, cause of errors and their resolutions, and status of the <ATTENTION> lamp are described below. Besides, when "Please see HELP for details" is shown in the message, pressing the [HELP] button in the operation panel will show the solution procedure, and you can easily solve the problem according to the guidance.
  • Page 41 If other messages are displayed Message displayed on the Error <ATTENTION> Reference Causes and Troubleshooting liquid crystal panel code lamp pages Close Cover Blinking The cover shown in the message is [COVER] open. Please see HELP for details Close the cover. Non Genuine Image Drum 6840 Blinking...
  • Page 42 If other messages are displayed Message displayed on the Error <ATTENTION> Reference Causes and Troubleshooting liquid crystal panel code lamp pages Incompatible Toner 5540 Blinking Toner cartridge is not intended for [COLOR] 5541 use with this printer model. Please see HELP for details 5542 Use a toner cartridge intended for 5543...
  • Page 43 If other messages are displayed Message displayed on the Error <ATTENTION> Reference Causes and Troubleshooting liquid crystal panel code lamp pages Check Fuser Unit Blinking The fuser unit is not installed correctly. Please see HELP for details Install the fuser unit correctly. Receiving Data Timeout Blinking A data receipt timeout occurred.
  • Page 44 If other messages are displayed Message displayed on the Error <ATTENTION> Reference Causes and Troubleshooting liquid crystal panel code lamp pages Spot Color Duct has not been Blinking Spot Color Duct has not been installed. installed Please install the Spot Color duct. Please install the Spot Color Duct (C941/ES9541/Pro9541 only) Please see HELP for details...
  • Page 45 If other messages are displayed Message displayed on the Error <ATTENTION> Reference Causes and Troubleshooting liquid crystal panel code lamp pages Firmware Update Error Firmware update failed. Please retry Follow the contents of the message. If network doesn’t work, please try firmware update over USB Open Stacker Blinking...

  • Page 46: Printing Troubles

    Printing Troubles Printing Troubles This section describes the possible troubles that may occur while operating the printer, and their solution procedure. Memo z If the problem is not solved using the following methods, contact your dealer. z For problems arising from the applications, contact the application development company. Unable to print Basic reasons „...
  • Page 47 Advanced and IP address of the printer set in the computer are matching. z If you are using OKI LPR Utility on Windows, check IP address settings in OKI LPR Utility. z Check that IP address is not overlapping with other device.
  • Page 48 Printing Troubles Printer Troubles Memo z If the problem is not solved using the following explanation, contact your dealer. Reference Symptom Cause Troubleshooting pages Nothing is displayed in the Power supply cord is Switch off the power supply, and Basic liquid crystal panel even after disconnected.
  • Page 49 Printing Troubles Reference Symptom Cause Troubleshooting pages Resonant sound. While temperature inside the Device has not broken down. device has increased, printing Use the device as it is. is done on a narrow paper or a thick paper. Printing does not start Device is warming up for Please wait.

  • Page 50: Printer Driver Malfunctions

    7. In [Devices and Printers], right click on the icon of driver you installed, and select [Printer properties] (or [OKI C9xx (*)] if installing multiple printer drivers). 8. From the list of the [Port] tab, select [USBxxx].
  • Page 51 Printing Troubles Problems concerning restrictions of OS „ Restrictions concerning Windows 7/Windows 8/Windows 8.1/Windows Vista/Windows Server 2008 R2/Windows Server 2008/Windows Server 2012/Windows Server 2012 R2 Item Symptom Causes and Troubleshooting Printer driver Help does not appear. The Help function is not supported by the PS printer driver. The [User Account When starting installer or utility, the [User Account Control] Control] dialog appears.

  • Page 52: Print Quality Is Poor

    Printing Troubles Print quality is poor Memo z If the problem is not solved using the following methods, contact your dealer. Reference Symptom Cause Troubleshooting pages White stripe in perpendicular LED head is unclean. Wipe LED head with a soft page 87 direction.
  • Page 53 Printing Troubles Reference Symptom Cause Troubleshooting pages The front or rear edge of the The transfer roller is dirty. Run [Print Adjust] > [Transfer Advanced paper is dirty. Roller Cleaning] on the control panel. The transfer roller unit or the Wipe the transfer roller unit and page 96 paper transfer path is dirty.
  • Page 54 Printing Troubles Reference Symptom Cause Troubleshooting pages Rubbing it off will remove the Type and thickness setting of Correct [Media Weight] in the Advanced toner. paper is inappropriate. operation panel to appropriate value. Or, change [Media Weight] to a thicker value than the present value.
  • Page 55 Printing Troubles Reference Symptom Cause Troubleshooting pages Border of the solid printing Paper is too dry. Use paper stored under Basic portion is lightly stained. appropriate temperature and humidity. Recycled paper is used. Select [Recycled] for the media Basic type. [Paper Black Setting] or [Paper Raise the setting value of [Paper Advanced...
  • Page 56 Printing Troubles Reference Symptom Cause Troubleshooting pages Nothing is printed. Multiple pages were fed in one Re-set the papers after flipping round of printing. through. The device might have broken Contact your dealer. down. White streaks occur. Paper is moist. Replace with a new paper.

  • Page 57: Paper Feed Is Poor

    Printing Troubles Paper feed is poor Memo z If the problem is not solved using the following methods, Contact your dealer. Reference Symptom Cause Troubleshooting pages Paper jam occurs frequently. Device is tilted. Install on a stable and a flat surface. Feed paper roller is dirty Clean the feed paper roller.

  • Page 58: When Image Disturbance Occurs

    Printing Troubles When image disturbance occurs If image distortion occurs to the end of printed paper while printing with heavy paper or paper with short feeding length (less than 230 mm), manually change the paper weight according to the paper you are using.

  • Page 59: Maintenance

    Maintenance Replacing consumables and maintenance unit ……………………………………………… 60 Device Maintenance ………………………… 87 Moving and shipping the device ……… 100 - 59 -...

  • Page 60: Replacing Consumables And Maintenance Unit

    Replacing consumables and maintenance unit Replacing consumables and maintenance unit This section describes the replacement method of consumables and maintenance unit and their lifespan. Consumables and maintenance unit service life Ballpark indicator of replacement of consumables and maintenance unit is as follows. z Toner cartridge (CMYK) With a standard toner cartridge, the printable pages for continuous printing is about 10,000.
  • Page 61 Replacing consumables and maintenance unit ‰ Only for C941/C942/ES9541/ES9542/Pro9541/Pro9542 z Toner cartridge (Clear/White) When A4 size documents with print density of 5% are printed with long edge feed with continues 1-side printing, the printable pages is about 10,000. Printing quality will decline after about 1 year from opening the package. Therefore, prepare a new toner cartridge.

  • Page 62: When The Replacement Period Is Approaching

    Replacing consumables and maintenance unit When the replacement period is approaching When the replacement period of consumables and maintenance unit approaches, the following message will appear and the <ATTENTION> lamp will blink. Replace consumables and maintenance unit when "Replace ..." appears in the message. Pressing the [HELP] button in the operation panel will display the replacement procedure.

  • Page 63: Replacing Toner Cartridges

    Replacing consumables and maintenance unit Replacing toner cartridges ARNING ● Store the used toner cartridge in a bag such that toner does not scatter. ● Do not throw toner or toner cartridge in fire. Toner may fly off causing burn ●...
  • Page 64 Toner Cartridge Yellow Toner Cartridge Magenta Toner Cartridge Cyan Toner cartridge Spot Color White Only for C941/C942/ES9541/ES9542/Pro9541/Pro9542. Can not be used in C911/C931/ES9411/ES9431/Pro9431. Toner cartridge Spot Color Clear Only for C941/ES9541/Pro9541. Can not be used in C911/C931/C942/ES9411/ES9431/ES9542/ Pro9431/Pro9542. Replacing Toner Cartridges Remove the toner cartridge.

  • Page 65: Toner Cartridges

    Replacing consumables and maintenance unit Remove the new toner cartridge from Close the toner replacement cover. its packaging, and shake it vertically and horizontally. Memo z Even after replacing the toner cartridge, if the [Replace Toner] message does not disappear, it is possible that the toner cartridge is not installed firmly.

  • Page 66: Replacing Image Drums

    Image Drum Black Image Drum Yellow Image Drum Magenta Image Drum Cyan Image drum Spot Color White Only for C941/C942/ES9541/ES9542/Pro9541/Pro9542. Can not be used in C911/C931/ES9411/ES9431/Pro9431. Image drum Spot Color Clear Only for C941/ES9541/Pro9541. Can not be used in C911/C931/C942/ES9411/ES9431/ES9542/ Pro9431/Pro9542. Note z Do not expose the image drum to direct sunlight or strong light (About 1,500 lux or more).
  • Page 67 Replacing consumables and maintenance unit Gently lift the handle (blue) upwards, Note and remove the image drum taking care z Be careful not to touch or scratch the image drum (green cylinder). that your hand does not touch the drum on the lower side (green cylindrical section).

  • Page 68: Image Drums

    Replacing consumables and maintenance unit Align the image drum and arrow label Close the front cover. (red) of printer, slowly insert in the slot taking care that your hand does not touch the photoreceptor (green) below, and firmly push it inside. Memo z If Error709 appears after replacing the image drum, refer to...

  • Page 69: Replacing Belt Units And Transfer Roller Units

    Replacing consumables and maintenance unit Replacing belt units and transfer roller units Prepare a new belt unit. Remove the waste toner box. New transfer roller unit is supplied with the new belt unit in the same package. ‰ [Replacing the Belt Unit] Open the front cover.
  • Page 70 Replacing consumables and maintenance unit Push the center lever (blue) to the Hold the handle and pull out the belt right. unit, hold the left-right label part (blue) and remove the belt unit. Rotate the belt unit left/right lock lever knob (blue) to the left, and push the lock lever towards yourself.
  • Page 71 Replacing consumables and maintenance unit Unpack the new belt unit from its z Never place the removed belt unit in a vertical direction. packaging. Note z Do not touch the belt surface or damage the belt. z Ensure that waste toner does not spill when removing the belt unit.
  • Page 72 Replacing consumables and maintenance unit Raise the belt unit left/right lock lever, Set the waste toner box on the printer. rotate the lock lever knob (blue) to the right and lock it. Return the center lever (blue) to the left. Close the front cover.
  • Page 73 Replacing consumables and maintenance unit ‰ [Replacing the transfer roller unit] Hold the transfer roller unit's label part (blue) and remove it. Lift opener ( ) of the exit unit, and pull out the exit unit. Remove transfer roller unit. Set the new transfer roller unit to the exit unit.
  • Page 74 Replacing consumables and maintenance unit Push both sides of the lock lever (blue) down. Put the exit unit back into the printer. Please support recycling of the used belt unit and transfer roller unit. Memo z When disposing of the used belt unit and transfer roller unit in uunavoidable circumstances, put them in a plastic bag, and ensure to dispose according to the instructions provided by the local municipality.

  • Page 75: Replacing Fuser Units

    Replacing consumables and maintenance unit Replacing fuser units Replacing fuser units Pull up the fuser unit's lock lever (blue). Prepare a new fuser unit. CAUTION Possible to get burned. Do not touch the fuser unit because it is hot. Lift opener ( ) of the exit unit, and pull out the exit unit.
  • Page 76 Replacing consumables and maintenance unit Hold the new fuser unit handle with both hands, and set it to the exit unit. Push down the fuser unit's lock lever (blue). Put the exit unit back into the printer. Please support recycling of the used fuser units.

  • Page 77: Replacing Waste Toner Boxes

    Replacing consumables and maintenance unit Replacing waste toner boxes Replacing waste toner boxes Remove the waste toner box from the printer. Prepare a new waste toner box. Open the front cover. Remove the new waste toner box from its packaging. - 77 -...
  • Page 78 Replacing consumables and maintenance unit Install the new waste toner box to the printer. Close the front cover. Please support recycling of the used toner boxes. Memo z When disposing of the used waste toner box in unavoidable circumstances, put it in a plastic bag, and ensure to dispose according to the instructions provided by the local municipality.

  • Page 79: Replacing Paper Feed Rollers

    Replacing consumables and maintenance unit Replacing paper feed rollers Rough guide of replacing paper feed rollers is about 120,000 pages for each tray. Replacing paper feed rollers of Check that the operation panel is completely turned off, and then switch Tray 1 to Tray 5 off the main power supply.
  • Page 80 Replacing consumables and maintenance unit While expanding the claws of feed Similarly, remove the remaining two rollers ( ) in outside direction, remove paper feed rollers ( , them from the axial. Memo z If the feed roller is not visible due to darkness, open the tray side cover (“Removing paper from the vicinity of Tray Side...
  • Page 81 Replacing consumables and maintenance unit Insert the new feed rollers ( ) in the axial, and firmly insert up to inside. Similarly, insert the remaining two paper feed rollers ( , Check that no paper feed roller is missing. - 81 -...
  • Page 82 Replacing consumables and maintenance unit Replacing the paper feed Install Tray 1. rollers and separator of Multi- Purpose Tray There are three types of paper feed rollers. Center is white With gear Tip of the center is black Items to be prepared: Paper feed rollers 2 nos., separation roller 1 no., separator 1 no.
  • Page 83 Replacing consumables and maintenance unit Lift the opener ( ), and open the right While expanding the claws of feed side cover. rollers ( ) in outside direction, remove them from the axial. - 83 -...
  • Page 84 Replacing consumables and maintenance unit Lift Section A, release the claws in the Pinch the claws (two places) and direction shown in figure, and remove remove the separator ( ). Open the paper feed rollers ( ). Section B, and remove the separation rollers ( ).
  • Page 85 Replacing consumables and maintenance unit Firmly insert the new separation roller Insert the new feed rollers ( ) in the ( ) along the notch, and mount the axial, and firmly insert up to inside separator ( ). while rotating them. Check that no paper feed roller is missing.

  • Page 86: Paper Feed Rollers

    Replacing consumables and maintenance unit Please support recycling of the used paper feed rollers. Memo z When disposing of the used paper feed rollers in unavoidable circumstances, put them in a plastic bag, and ensure to dispose according to the instructions provided by the local municipality.

  • Page 87: Device Maintenance

    Device Maintenance Device Maintenance This section describes the cleaning method of the respective part of the device. Cleaning device surfaces Cleaning LED heads Items to be prepared: Water or neutral washing Clean LED head when there are stripes or white agent, soft and dry cotton cloth 2 pieces creases on the print, or when letters are blurred.
  • Page 88 Device Maintenance Open the front cover. Note z Ensure not to touch or damage the drum. Gently lift the handle (blue) upwards, and remove the photoreceptor from the lower side taking care that your hand does not touch the drum on the lower side (green cylindrical section).
  • Page 89 Device Maintenance Remove the waste toner box from the Push the center lever (blue) to the printer. right. Rotate the belt unit left/right lock lever knob (blue) to the left, and push the lock lever towards yourself. - 89 -...
  • Page 90 Device Maintenance Hold the handle and pull out the belt z Never place the belt units that have you removed in a vertical direction. unit, hold the left-right label part (blue) and remove the belt unit. Gently wipe the surface of LED head with a soft tissue paper.
  • Page 91 Device Maintenance Set the belt unit to the printer, and Return the center lever (blue) to the left. push it in firmly. Set the waste toner box on the printer. Raise the belt unit left/right lock lever, rotate the lock lever knob (blue) to the right and lock it.
  • Page 92 Device Maintenance Align the image drum and arrow label Close the front cover. (red) of printer, slowly insert in the slot taking care that your hand does not touch the photoreceptor (green) below, and firmly push it inside. Note z Ensure not to touch or damage the drum Similarly, install all image drums.

  • Page 93: Cleaning Feed Rollers

    Device Maintenance Pull out Tray 1. Cleaning feed rollers When paper jam occurs frequently, clean the paper feed rollers. Items to be prepared: Soft cotton cloth dipped in water Cleaning paper feed rollers of Tray 1 to Tray 5 Example) When cleaning the paper feed roller of Tray 1 Remove wrist watch, bracelet, etc.
  • Page 94 Device Maintenance Cleaning the paper feed rollers Lift the opener ( ), and open the right side cover. of Multi-Purpose Tray Press and hold the power switch for approximately 1s to switch off the power supply. Check that the operation panel is completely turned off, and then switch off the main power supply.
  • Page 95 Device Maintenance While expanding the claws of feed Wipe off the dirt on paper feed rollers (2 rollers ( ) in outside direction, remove places) and on separator with the moist them from the axial. soft cloth. Insert the feed rollers ( ) in the axial, and firmly insert up to inside while rotating them.

  • Page 96: Cleaning The Transfer Roller Unit And Paper Transfer Path

    Device Maintenance Cleaning the Transfer Roller Lift the opener ( ) of the exit unit, and pull out the exit unit. Unit and Paper Transfer Path If the front or rear edge of the output paper becomes dirty frequently, clean the transfer roller unit and paper transfer path.
  • Page 97 Device Maintenance Remove the fuser unit by holding its Wipe the dirt off the paper transfer path handle with your hands. with a soft tissue paper. Wipe the dirt off the transfer roller unit Raise the lock levers (blue) at both with a soft tissue paper.
  • Page 98 Device Maintenance Push down the lock levers (blue) at Put the exit unit back into the printer. both ends. Set the fuser unit to the label position of the exit unit by holding its handle with your hands. Push down the lock lever (blue) of the fuser unit.

  • Page 99: Cleaning The Pinch Roller

    Device Maintenance Cleaning the Pinch Roller If foreign matter is found on the pinch roller, remove the dirt with a soft cloth or tissue paper. Sticking foreign matter can be easily removed if cleaned after printing. - 99 -...

  • Page 100: Moving And Shipping The Device

    CAUTION CAUTION There is a risk of injury. There is a risk of injury. The printer weighs approx. 98 kg* for C911/C931/ The printer weighs approx. 98 kg* for C911/C931/ ES9411/ES9431/Pro9431 models, and approx. ES9411/ES9431/Pro9431 models, and approx. 111 Kg* for C941/C942/ES9541/ES9542/Pro9541/ 111 Kg* for C941/C942/ES9541/ES9542/Pro9541/ Pro9542 model.
  • Page 101 Moving and shipping the device Check the toner cartridge detection Apply an adhesive tape to hold the levers (four levers for C911/C931/ toner cartridge lever in the raised ES9411/ES9431/Pro9431, and five condition. levers for C941/ES9541/Pro9541). Repeat Steps 5 and 6 for all toner Raise the toner cartridge detection cartridge detection levers.

  • Page 102: Index

    Index - 102 -...
  • Page 103 2-Sided Printing Unit (lower side) ..23, 25, 30 Maintenance ..........87 Front side of the device ....... 87 Belt unit ......... 60, 62, 69 LED head ........... 87 Paper feed roller (Multi-Purpose Tray) ..94 Paper feed roller (tray) ......93 Check ............11 Paper Transfer Path ......
  • Page 104 Replacement ..........60 Belt unit ..........69 Fuser unit .......... 75 Image drum ........66 Paper feed roller (Multi-Purpose Tray) ..82 Paper feed roller (tray) ......79 Toner cartridge ........64 Transfer roller unit ......69 Waste toner box ......... 77 Replacement timing ........
  • Page 105 Oki Data Corporation 4-11-22 Shibaura, Minato-ku,Tokyo 108-8551, Japan www.okiprintingsolutions.com August 2015 45582802EE Rev6...

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