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Oki 490 manual Appendix C Specifications, Print Method, Printhead, Interfaces, Receive Buffer Size

Models: 490

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Appendix C: Specifications

Note: Specifications are subject to change without notice.

Print Method

Impact dot matrix

Printhead

24 pins, 0.20 mm (0.0079") diameter, with thermal protection

Interfaces

Standard: Centronics parallel, IEEE-1284 compliant USB 1.1

Optional: RS-232C Serial

Ethernet Print Servers:

6120i 10/100 Base-TX Internal

6020e 10/100 Base-T External

6010e 10 Base-T External

Receive Buffer Size

Maximum 128K

Reliability

Ribbon Life

4 million characters, on average, 10 cpi utility

Printhead Life

200 million characters average in 10 cpi draft mode at 25% duty and 35% page density

Mean Time Between Failures (MTBF)

20,000 hours at 25% duty cycle and 35% page density

Mean Time to Repair (MTTR)

15 minutes

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Oki 490 manual Appendix C Specifications, Print Method, Printhead, Interfaces, Receive Buffer Size, Reliability

Contents

59348401 User’s Guidee-Mail Address pubs@okidata.com Mailing AddressSafety These are some of the things to look for Chapter 2 Helpful Hints ContentsChapter 3 Using Your Printer Chapter 1 IntroductionAppendix C Specifications Chapter 5 MaintenanceChapter 6 Troubleshooting Appendix A Parts & AccessoriesHigh Speed Draft Mode 420 cps 10 cpi Utility Mode 269 to 472 cps Printer FeaturesChapter 1 Introduction Oki Data on the InternetSaving Time Note This feature is normally turned offChapter 2 Helpful Hints Saving Money Forms Tear-OffTurning the Platen Knob Controlling Access to the PrinterOperation Tips Top of Form TOFChapter 3 Using Your Printer Parts Identification Rear Feed Continuous FormsNote For rear feed, the paper lever must be forward Control Panel Acoustic Cover open Parts Identification Top Feed Single SheetsPaper Guides Sheet Guide Paper Lever On-Off Switch Platen Knob Using Your PrinterTop of Form TOF and Forms Tear-Off Top of Form TOFDetermining 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 Setting Top of Form TOF The SEL light goes off and the red alarm light comes onForms Tear-Off Set to ON The paper moves to the current TOFTemporarily Changing the Top of Form Position Resetting Top of Form to the Factory DefaultForms Tear-Off Feature Potential Problems with Software PackagesDo not use Forms Tear-Off with labels or multipart forms Manual Forms Tear Off Changing the Forms Tear-Off SettingNote The default setting for Forms Tear-Off is OFF Paper ParkChanging Paper Paths Continuous Forms toSingle SheetsUsing Your Printer 2 Lower the sheet guide into the continuous-forms position Single Sheets toContinuous Forms3 Swing the wire feed guide over onto the pull-up roller 1 Press FF/LOAD to remove the single-sheet paperPrinthead Gap Make sure the printer is turned off before you open the access coverHSD High Speed Draft LQ and UTILITY lights both on Print QualityLQ Letter Quality LQ light on Utility UTILITY light onOrator Typefaces LQ ModeCourier GothicCharacter Pitch Changing Emulations Printer ResetEpson LQ - factory setting EmulationsMenu Mode Keys Chapter 4 Menu ModePrinting the Current Menu Settings Resetting the Menu to the Factory DefaultsPrinting the Menu Settings Entering and Exiting Menu ModeChanging the Menu Settings Menu Settings Table Settings Defaults are set in bold italicGroup Group Menu Settings Table Continued13.6 Settings Defaults are set in bold italicGroup 500 ms, 1 sec, 2 secMenu Settings Table Continued Settings Defaults are set in bold italic32 Microline 490/491 User’s Guide Menu Settings Table ContinuedSettings Defaults are set in bold italic GroupSettings Defaults are set in bold italic Ready on Power Up, Ready on SelectInvalid, Valid Menu Settings Table Continued34 Microline 490/491 User’s Guide Menu Settings Table ContinuedSettings Defaults are set in bold italic GroupAuto Feed XT, Default = Invalid Explanations of Menu ItemsAuto CR, Default =No Auto LF, Default = NoSSD -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 Do not remove the ribbon shield 1 from the ribbon The printhead may be HOTLoading Rear Feed Paper from the Back of the Printer Loading PaperRear Feed MaintenanceCareful 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 8 Place continuous forms paper on the first two pins of either tractor Note If the paper is too loose or too tight it can cause jams13 Press FF/LOAD 48 Microline 490/491 User’s Guide Loading Rear Feed Paper from the Front of the PrinterML490ML491 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 11 Press FF/LOAD MaintenanceTop 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 Make sure the printer is turned off before you open the access cover Rear-Feed, Repeating Paper Jams4 Remove any torn pieces of paper Maintenance Single-Sheet Paper Jams3 Open the access cover 1 and remove the pull-up roller assembly 5 Reinstall the pull-up roller assembly and close the access coverCleaning the Housing Make sure the printer is turned off before you open the access cover58 Microline 490/491 User’s Guide General Information Chapter 6 TroubleshootingNote Settings in your software application will normally override any settings in your printer driverNothing happens when I turn on the printer Problems / SolutionsProblem SolutionProblem The printer does not print when the computer sends dataSolutions ProblemSolution Ink smears on the paper when I print narrow columnsIve installed a new ribbon and the printing is smeared and streaked ProblemThere are dots missing in my printouts The ALARM light is flashingThe ALARM light is on and the Character Pitch 10 light is flashing The ALARM light is on and the Character Pitch 15 light is flashingSolution The printer needs paper. The ALARM is not on. I can’t load paperContinuous-form paper sticks to the sheet guide ProblemPurchasing Parts & Accessories Appendix A Parts & AccessoriesPull-Up Roller Assembly Replacement PartsPower Cord Access Cover70030501 AccessoriesOption Pull Tractor, Top-MountAppendix B Printer Control Codes Epson LQ CommandsEpson 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 Printhead Appendix C SpecificationsNote Specifications are subject to change without notice Print MethodCharacters per Line cpl Graphics ResolutionEmulations co-resident Print SpeedSpecifications Resident FontsBar Codes Resident TypefacesCarbonless continuous forms orig. + 4 copies Paper Specifications ML490Single Cut Sheets Single-part, continuous formsPaper Specifications ML491 Electrical Requirements Physical SpecificationsNote Height dimensions do not include the acoustic cover Environmental 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 Do not remove the ribbon shield 1 from the ribbon Install the Ribbon Cartridge1 Make sure the printer is turned OFF The printhead may be HOT1 Make sure both the printer and the computer are OFF Power ConnectionComputer Connections Parallel LPT IEEEUSB Specification 1.1 Compliant Loading Paper86 Microline 490/491 User’s Guide Font Sample Test Testing the PrinterThe printer prints the rolling ASCII text page after page Rolling ASCII TestPrinter 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