Oki 490 manual Ink smears on the paper when I print narrow columns

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Problem

Ink smears on the paper when I print narrow columns.

Solution

This may be caused by excessive printhead travel from the centering position. Enter the Menu and set the Centering Position to MODE 1. See “Using Your Printer, Menu Mode.”

For the wide-carriage printer, if MODE 1 doesn't work, try setting the Centering Position to MODE 2.

Problem

I've installed a new ribbon and the printing is smeared and streaked.

Solution

The ribbon shield (1) is either loose or missing.

Remove the ribbon cartridge and check the ribbon shield.

•If it is loose, secure it.

•If it is missing, find it and install it.

62Microline 490/491 User’s Guide

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Contents User’s Guide Mailing Address Safety Microline 490/491 User’s Guide Contents Troubleshooting Oki Data on the Internet Printer FeaturesIntroduction Saving Time Helpful HintsSaving Money Forms Tear-Off Internet SupportTop of Form TOF Controlling Access to the PrinterOperation Tips Turning the Platen KnobUsing Your Printer Parts Identification Rear Feed Continuous FormsParts Identification Top Feed Single Sheets Top 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 SettingForms Tear-Off Set to on Resetting Top of Form to the Factory Default Temporarily Changing the Top of Form PositionForms Tear-Off Feature Potential Problems with Software PackagesManual Forms Tear Off Changing the Forms Tear-Off SettingPaper Park Changing Paper Paths Continuous Forms toSingle SheetsSingle Sheets toContinuous Forms Printhead Gap Print Quality Typefaces LQ Mode Character Pitch Changing Emulations Printer ResetEmulations Menu Mode Menu Mode KeysPrinting the Menu Settings Entering and Exiting Menu ModeResetting the Menu to the Factory Defaults Changing the Menu Settings Menu Settings Table Group Settings Defaults are set in bold italic13.6 500 ms, 1 sec, 2 sec DEFAULT, Mode 1, Mode Invalid, Valid Menu Settings Table Explanations of Menu Items Use this to switch character sets to IBM Set Selects the printer command set emulation you want to engage Sets the signal on pin 18 to +5 volts or open Choose the quality and typeface of printing Change to Double for double width and height printing Maintenance Replacing the Ribbon CartridgePrinthead may be HOT Loading Paper Rear FeedCareful Open the tractor covers Microline 490/491 User’s Guide Maintenance Loading Rear Feed Paper from the Front of the Printer ML490ML491 Microline 490/491 User’s Guide Maintenance Top Feed Single Sheets Maintenance Clearing Paper Jams Rear-Feed Paper JamsRear-Feed, Repeating Paper Jams Microline 490/491 User’s Guide Single-Sheet Paper Jams Cleaning the Housing Troubleshooting General InformationProblems / Solutions SolutionSolutions Ink smears on the paper when I print narrow columns There are dots missing in my printouts Printer needs paper. The Alarm is not on. I can’t load paper Appendix a Parts & Accessories Purchasing Parts & AccessoriesReplacement Parts Part NumberAccessories Option Part NumberEpson LQ Commands Appendix B Printer Control CodesDEL Enabled On DC3 Carriage Return Character Pitch, Select 10 cpi IBM Commands ESC % HESC Q $ Appendix C Specifications Print Speed Graphics ResolutionEmulations co-resident Characters per Line cplResident Typefaces Resident FontsBar Codes Paper Specifications ML490 Paper Specifications ML491 Electrical Requirements Physical SpecificationsEnvironmental Requirements Unpack Appendix D InstallationLocation Microline 490/491 User’s Guide Installation Install the Ribbon Cartridge Parallel LPT Ieee Power ConnectionComputer Connections USB Specification 1.1 Compliant Testing the Printer Font Sample TestRolling Ascii Test Hexadecimal Dump Mode Printer DriversUsing a Compatible Driver Loading the OKI DriverIndex IBM Index Tear