Oki 490 manual Sets the signal on pin 18 to +5 volts or open

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Operator Panel Function, Default = Full Operation

Change to Limited Operation to deactivate the PRINT QUALITY and CHARACTER PITCH buttons, so that these features can only be controlled through your software. This prevents these from being changed from the control panel when several people are using the printer.

Important!

This feature also prevents access to the Menu. To access the Menu in these circumstances, turn the printer off, then hold down the SEL key while turning on the printer.

Page Length, Default = 11"

Selects the length of the paper you are using. This enables the printer to keep track of the initial printing position (TOF) on each page.

Page Length Control, Default = by Menu Setting

Change the setting to “by Actual Page Length” if you wish to print on single-sheets longer than 17 inches. When “by Actual Page Length” is selected, the menu setting for Top Feed Page Length is ignored.

Page Width, Default = 8"

Wide carriage model only. Change to 13.6" to print on wide paper.

Paper Out Override, Default = No

Senses when less than 1" (25 mm) of paper remains and stops printing. Change to Yes to override the sensor and print closer to the bottom of the page.

Caution!!

Engaging Paper Out Override can cause loss of data and damage the printhead by allowing printing without paper.

Parity, Default = None

Appears only when the optional Serial Interface is installed. Selects the type of parity your system uses: None, Odd or Even.

Pin 18, Default = +5V

Sets the signal on pin 18 to +5 volts or open.

Pitch, Default = 10 cpi

Choose the character width, in characters per inch (cpi).

38Microline 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