Oki ML5521, ML5520 manual There are dots missing in my printouts

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Problem

There are dots missing in my printouts.

Solution

The head gap may not be set correctly. Try moving the headgap lever to a lower setting. If that doesn’t help, the printhead may be damaged; call for service.

Problem

The ALARM light is flashing.

Solution

Try turning the printer OFF and then back ON again. If the light still blinks, call for service.

Problem

The ALARM light is ON and the Character Pitch 10 light is flashing.

Solution

This indicates that the paper lever is set at the wrong position for the paper you are trying to use. Move it to the proper setting.

Problem

The ALARM light is ON and the Character Pitch 15 light is flashing.

Solution

This indicates a paper jam. Press the SEL key and correct the paper jam situation. See “Clearing Paper Jams,” in Chapter 3.

Problem

The printer needs paper. The ALARM is not ON and I can’t load paper.

Solution

1.Press and release the SEL key.

2.Press and hold the SHIFT key and press the RESET / CHARACTER PITCH key.

The ALARM light illuminates and you can now load paper.

TROUBLESHOOTING > 66

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Contents ML5520/21 Preface Contents Index Oki contact details Page Forms Tear-Off Features / TipsIntroduction Paper ParkTop of Form TOF Turning the Platen KnobControlling Access to the Printer Emulations Installing the DriverPrinter Drivers Printer DriversIBM Proprinter Using a Compatible DriverInterfaces General Epson FXConnecting the USB Cable Printer’s USB portPrinter Drivers Using Your Printer Components Rear Feed Continuous FormsComponents TOP Feed Single Sheets TOP of Form TOF Forms TEAR-OFF To print the MenuTo use the Tear key Setting TOP of Form TOF Forms Tear-Off set to OFF defaultSEL light goes off and the red alarm light comes on Forms Tear-Off set to onForms TEAR-OFF Feature Temporarily Changing the TOP of FormPotential Issues with Software Packages Changing the Forms TEAR-OFF Setting Manual Forms TEAR-OFFContinuous Forms to Single Sheets Paper ParkChanging Paper Paths Never park labelsSingle Sheets to Continuous Forms Press FF/LOAD Setting Media Printhead GAPHigh Speed Draft HSD Utility UTL-the defaultPrint Quality Super Speed Draft SSDCharacter Pitch Epson and IBM EmulationsMicroline Emulation Printer Reset EmulationsChanging Emulations Menu Mode Menu Mode KeysPrinting the Menu Settings Entering and Exiting Menu ModeResetting the Menu to the Factory Defaults Printing ALL Menu SettingsMenu Settings Group Settings13.6 17.1 cpi, 20 cpi Invalid, Valid Explanation of Menu Items Bottom Margin, Default = Valid Baud Rate, Default = 9600 bpsBi-direction, Default = Enable Busy Line, Default = SSDCode Page, Default = USA Character Set, Default = IBM SetCharacter Set, Default = Standard CSF Bin Select, Default = BinEmulation Mode, Default = IBM PPR DSR Signal, Default = ValidDTR Signal, Default = Ready On Power Up ESC SI Pitch, Default = 17 cpiOperator Panel Function, Default = Full Operation Language Set, Default = AsciiLine Spacing, Default = 6 lpi Length, Default = 11-2/3 or 1/2Power Saving, Default = Enable Paper Out Override, Default = NoPower Save Time, Default = 5 min Print Mode, Default = UtilityProportional Spacing, Default = No Print Registration, Default =Print Suppress Effective, Default = Yes Protocol, Default = Ready/BusySize, Default = Single SI Select Pitch 10 cpi, Default = 17.1 cpiSI Select Pitch 12 cpi, Default = 20 cpi Skip Over Perforation, Default = NoMaintenance Replacing the Ribbon CartridgePrinthead may be HOT If ribbon should contact the eyesIf ribbon should contact the skin Loading Paper Rear FeedLoading Rear Feed Paper from the Back of the Printer Maintenance 5520 5521 If the paper is too loose, or too tight, it can cause jams Maintenance Loading Rear Feed Paper from the Front of the Printer 10 9.516 If the paper is too loose or too tight it can cause jams Reinstall the sheet feeder Maintenance TOP Feed Single Sheets Clearing Paper Jams Rear Feed JamsMaintenance Rear FEED, Repeating Paper Jams Defective PaperMisaligned Paper Maintenance Maintenance Single Sheet Paper Jams Cleaning the Housing Maintenance Solution TroubleshootingProblem General InformationSolutions Ink smears on the paper when I print narrow columns There are dots missing in my printouts Continuous-form paper sticks to the sheet guide Parts and Accessories Purchasing Parts & AccessoriesOption Part number ML5520 ML5521 IBM Proprinter III Commands Printer Control CodesESC % G Epson FX Commands DC3 OKI Microline Standard Commands ESC Y OFF Escz Specifications SpecificationUPC A, UPC E Paper Specifications Top onlyML5520 Setting UP Your Printer LocationUnpacking Setting UP Your Printer Setting UP Your Printer Installing the Ribbon Cartridge Ribbon Cartridge HandlingPage Power Connection USB, Specification 1.1 Compliant Computer ConnectionsParallel LPT, Ieee Testing the Printer Loading PaperFont Sample Test Setting UP Your Printer Hexadecimal Dump Mode Index BufferLength Time Out Oki Data Corporation Oki Systems UK LimitedOki Systems Ireland Limited Oki Hong Kong LimitedML5520/21