Manuals / Oki / Computer Equipment / Printer

Oki 490 Replacement Parts, Part Number, Both Models, 42377801, Platen Knob, 51902220, Power Cord

Models: 490

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Replacement Parts

Item				Part Number
Both Models
Ribbon Cartridge ( ) -------------------------------				42377801
Platen Knob (		) -------------------------------------		51902220
Power Cord (		) -------------------------------------		56631801
Model ML490
Printhead (	) ----------------------------------------			42124201
Access Cover (		) -----------------------------------		42115401
Sheet Guide (		) -------------------------------------		51009509
Pull-Up Roller Assembly (			)	--------------------- 42044701
Model ML491
Printhead (	) ----------------------------------------			42124201
Access Cover (		) -----------------------------------		42115301
Sheet Guide (		) -------------------------------------		51009410
Pull-Up Roller Assembly (			)	--------------------- 42045701

66Microline 490/491 User’s Guide

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Image 66

Oki Replacement Parts, Part Number, Both Models, 42377801, Platen Knob, 51902220, Power Cord, 56631801, Model ML490

Contents

User’s Guide 59348401Mailing Address e-Mail Address pubs@okidata.comSafety These are some of the things to look for Chapter 1 Introduction ContentsChapter 3 Using Your Printer Chapter 2 Helpful HintsAppendix A Parts & Accessories Chapter 5 MaintenanceChapter 6 Troubleshooting Appendix C SpecificationsOki Data on the Internet Printer FeaturesChapter 1 Introduction High Speed Draft Mode 420 cps 10 cpi Utility Mode 269 to 472 cpsSaving Money Forms Tear-Off Note This feature is normally turned offChapter 2 Helpful Hints Saving TimeTop of Form TOF Controlling Access to the PrinterOperation Tips Turning the Platen KnobChapter 3 Using Your Printer Parts Identification Rear Feed Continuous FormsNote For rear feed, the paper lever must be forward Using Your Printer Parts Identification Top Feed Single SheetsPaper Guides Sheet Guide Paper Lever On-Off Switch Platen Knob Control Panel Acoustic Cover openTop of Form TOF Top of Form TOF and Forms Tear-OffDetermining if Forms Tear-Off is Off or On Setting Top of Form TOF Forms Tear-Off OFF Default SettingThe printhead moves back to the left margin The paper moves to the current TOF The SEL light goes off and the red alarm light comes onForms Tear-Off Set to ON Setting Top of Form TOFResetting Top of Form to the Factory Default Temporarily Changing the Top of Form PositionForms Tear-Off Feature Potential Problems with Software PackagesDo not use Forms Tear-Off with labels or multipart forms Paper Park Changing the Forms Tear-Off SettingNote The default setting for Forms Tear-Off is OFF Manual Forms Tear OffChanging Paper Paths Continuous Forms toSingle SheetsUsing Your Printer 1 Press FF/LOAD to remove the single-sheet paper Single Sheets toContinuous Forms3 Swing the wire feed guide over onto the pull-up roller 2 Lower the sheet guide into the continuous-forms positionMake sure the printer is turned off before you open the access cover Printhead GapUtility UTILITY light on Print QualityLQ Letter Quality LQ light on HSD High Speed Draft LQ and UTILITY lights both onGothic Typefaces LQ ModeCourier OratorCharacter Pitch Emulations Printer ResetEpson LQ - factory setting Changing EmulationsChapter 4 Menu Mode Menu Mode KeysEntering and Exiting Menu Mode Resetting the Menu to the Factory DefaultsPrinting the Menu Settings Printing the Current Menu SettingsChanging the Menu Settings Menu Settings Table Settings Defaults are set in bold italicGroup Settings Defaults are set in bold italic Menu Settings Table Continued13.6 GroupSettings Defaults are set in bold italic 500 ms, 1 sec, 2 secMenu Settings Table Continued GroupGroup Menu Settings Table ContinuedSettings Defaults are set in bold italic 32 Microline 490/491 User’s GuideMenu Settings Table Continued Ready on Power Up, Ready on SelectInvalid, Valid Settings Defaults are set in bold italicGroup Menu Settings Table ContinuedSettings Defaults are set in bold italic 34 Microline 490/491 User’s GuideAuto LF, Default = No Explanations of Menu ItemsAuto CR, Default =No Auto Feed XT, Default = InvalidSSD -9V, select SSD SSD +9V, select SSD+ DTR -9V, select DTR Selects the printer command set emulation you want to engage Wide carriage model only. Change to 13.6 to print on wide paper Choose the quality and typeface of printing Change to Double for double width and height printing Chapter 5 Maintenance Replacing the Ribbon Cartridge1 Make sure the printer is turned OFF The printhead may be HOT Do not remove the ribbon shield 1 from the ribbonMaintenance Loading PaperRear Feed Loading Rear Feed Paper from the Back of the PrinterCareful 3 Grasp the sheet guide. Lift it slightly, then slide it back44 Microline 490/491 User’s Guide 5 From the back of the printer, locate the tractors Note If the paper is too loose or too tight it can cause jams 8 Place continuous forms paper on the first two pins of either tractor13 Press FF/LOAD Loading Rear Feed Paper from the Front of the Printer 48 Microline 490/491 User’s GuideML490ML491 9 Reinstall the sheet guide Note If the paper is too loose or too tight it can cause jams50 Microline 490/491 User’s Guide Maintenance 11 Press FF/LOADTop Feed Single Sheets If the paper does not feed in, remove it. Check the paper lever position. Make sure the ALARM light is on if it is flashing, hold the SHIFT key and press the CHARACTER PITCH/RESET key. Reload the sheet of paper Clearing Paper Jams Rear-Feed Paper JamsMake sure the printer is turned off before you open the access cover Rear-Feed, Repeating Paper Jams Make sure the printer is turned off before you open the access cover4 Remove any torn pieces of paper 5 Reinstall the pull-up roller assembly and close the access cover Single-Sheet Paper Jams3 Open the access cover 1 and remove the pull-up roller assembly MaintenanceCleaning the Housing Make sure the printer is turned off before you open the access cover58 Microline 490/491 User’s Guide override any settings in your printer driver Chapter 6 TroubleshootingNote Settings in your software application will normally General InformationSolution Problems / SolutionsProblem Nothing happens when I turn on the printerProblem The printer does not print when the computer sends dataSolutions ProblemProblem Ink smears on the paper when I print narrow columnsIve installed a new ribbon and the printing is smeared and streaked SolutionThe ALARM light is on and the Character Pitch 15 light is flashing The ALARM light is flashingThe ALARM light is on and the Character Pitch 10 light is flashing There are dots missing in my printoutsProblem The printer needs paper. The ALARM is not on. I can’t load paperContinuous-form paper sticks to the sheet guide SolutionAppendix A Parts & Accessories Purchasing Parts & AccessoriesAccess Cover Replacement PartsPower Cord Pull-Up Roller AssemblyPull Tractor, Top-Mount AccessoriesOption 70030501Epson LQ Commands Appendix B Printer Control CodesEpson LQ Commands Continued Epson LQ Commands Continued Epson LQ Commands Continued IBM Proprinter X24e / XL24e and IBM X24e AGM / XL24e AGM Commands IBM Commands continued IBM Commands Continued Print Method Appendix C SpecificationsNote Specifications are subject to change without notice PrintheadPrint Speed Graphics ResolutionEmulations co-resident Characters per Line cplResident Typefaces Resident FontsBar Codes SpecificationsSingle-part, continuous forms Paper Specifications ML490Single Cut Sheets Carbonless continuous forms orig. + 4 copiesPaper Specifications ML491 Environmental Requirements Physical SpecificationsNote Height dimensions do not include the acoustic cover Electrical RequirementsAppendix D Installation LocationUnpack 3 Remove the shipping restraint from the pull-up roller assembly 2 Remove the printhead shipping restraint82 Microline 490/491 User’s Guide Installation The printhead may be HOT Install the Ribbon Cartridge1 Make sure the printer is turned OFF Do not remove the ribbon shield 1 from the ribbonParallel LPT IEEE Power ConnectionComputer Connections 1 Make sure both the printer and the computer are OFFUSB Specification 1.1 Compliant Loading Paper86 Microline 490/491 User’s Guide Testing the Printer Font Sample TestRolling ASCII Test The printer prints the rolling ASCII text page after pagePrinter Drivers Hexadecimal Dump ModeEmulations Using a Compatible Driver Loading the OKI DriverThe Windows Add New Hardware Wizard window displays Index 92 Microline 490/491 User’s Guide Index 94 Microline 490/491 User’s Guide

Replacement Parts

Part Number

Both Models

42377801

Platen Knob (

51902220

Power Cord (

56631801

Model ML490

Printhead (

42124201

Access Cover (

42115401

Sheet Guide (

51009509

Pull-Up Roller Assembly (

Model ML491

42115301

51009410