ALFA 20DX manual Cleaning the LED Array, Generating a Drum Cleaning

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Cleaning the LED Array

Clean the LED array every time you install a new toner cartridge. A dirty LED array could cause faded vertical areas or light printing down a page.

1.Press the OPEN button and lift the printer cover all the way up.

2.Locate the LED array on the underside of the cover. Remove the LED Lens Cleaner Pad (included with the Toner Kit) from the package and carefully run it along the LED array.

LED array

Note: If you do not have a lens cleaner pad, you can use a lint-free cloth with a little rubbing alcohol on it to clean the LED array.

3. Close the printer cover.

Note: An extra LED cleaning pad is provided with each toner cartridge. Clean the LED array between toner changes if faded vertical stripes appear.

Generating a Drum Cleaning Page

If you experience print quality problems, for example repeating marks, blotching or shading, use the drum cleaning feature. The cleaning process will remove residual impurities from printing surfaces.

To generate a Drum Cleaning page:

1.Press ON-LINE to set the printer off-line.

2.Lower and open the Front Feeder.

Press ◀/Recover and ♣/Reset simultaneously and hold for 2 seconds.

DRUM CLEANING

MANUAL LETTER REQUEST

or

DRUM CLEANING

MANUAL A4 REQUEST

displays.

3. Insert a clean sheet of letter or A4 paper in the Front Feeder.

4.Press FORM FEED.

The Cleaning Page will print.

5.Press ON-LINE to return the printer to ready.

E–48	Chapter 8: Maintenance

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Contents Okidata Publications Department OkidataContents Duplex Printing Important Safety Instructions English-iiiWarranty Enhancement Programs OKI ExtendOKI On-Site For more informationFCC/IC/CE Statements English-vFCC/IC/CE Setting Up Check the contentsSelect a Suitable Location UnpackGetting to Know Your Printer Front ViewSetting Up Prepare the Image DrumInstall the Toner Paper Feed Paths Paper SpecificationsLoad Paper Load the Paper Tray Paper Tray GaugeStoring Paper Select a Paper Exit PathTop Paper Exit Rear Paper ExitBi-Directional Parallel Mode Connect to Your ComputerParallel Connection Attach the Parallel CableParallel Interface Pin Assignments ECPSerial Mode Serial Connection RS232-CAttach the Serial Cable RS232-C Serial InterfaceConnect to Power Install the Printer SoftwareCheck the Menu Model 20DX Only Print the DemoPaper Size Indicator Control PanelSelect the Display Language Control Panel LightsControl Panel Button Functions Button Function SummarySelecting Printer Features Using Your Printer Driver Selecting Printer Features Using the Printer Main MenusHow to Use the Main Menus Printer MenusQuick Access Menus Using the Level-1 MenuSummary of Level-1 Categories Level-1 Menu SettingsPrinter Menus Light to Heavy weight values are same as specified for Tray Fonts & Symbols Default settings below are in italic Summary of Level-2 Categories Using the Level-2 MenuLevel-2 Menu Settings Auto Operation Clearable Wrnings Summary of Maintenance Menu Categories Maintenance Menu SettingsDUP ADJ Page Envelopes Front FeederEnglish-27 Using the Front Feeder to Print Multiple Pieces of Media Setting up Manual Feed for Standard Weight Paper Front Feeder Printing Individual Pieces Manual FeedManual Feed Standard Paper Front FeederSetting up to Print an Envelope Manual Feed EnvelopesSetting up to Print Labels Manual Feed LabelsSetting up to Print a Transparency Manual Feed TransparenciesManual Feed Heavy Card Stock Heavy Card Stock SpecificationsSetting up to Print Heavy Stock Using the Automatic Tray Switch Feature Printer goes off-lineDuplex Printing Portrait Versus LandscapeDuplex Printing Windows NT Duplex Printing WindowsClick Start, Settings, Printers Click Document DefaultsClick Properties Click Print on Both Sides Duplex PrintingFonts Available FontsPrinting a Sample of Resident Fonts Summary of Available FontsCG Omega 61 Symbol Sets Univers Condensed 61 Symbol SetsAntique Olive 61 Symbol Sets Garamond 61 Symbol SetsUsing Bar Code Fonts Symbol SetsSelecting Fonts Adobe PostScript Fonts OptionPage Additional Options AccessoriesOptional Paper Handling Accessories MB P/N Simm ConfigurationsExpanded Memory SIMMs Maintenance General Consumables InformationToner Cartridge Type 7 P/N Image Drum Type 7 P/NReplacing the Toner Cartridge P/N Maintenance Precautions Replacing the Image Drum Cartridge P/NDisplays Cleaning the LED Array Generating a Drum CleaningProblem Solving Paper JamsPaper Jam Messages English-49Clearing a Paper Input Jam Why Paper Jams OccurClearing Paper Jams Problem Solving Clearing a Paper Feed JamClearing Duplex Feeder Paper Jams Clearing a Paper Exit JamClearing Duplex Feeder Input Jams Clearing a Duplex Feeder Open JamClearing Duplex Feeder Jams 1 Printer Display Messages Clearing Duplex Feeder JamMessage Error Message OFF-LINE Message Paper OUTPrint Quality Problems Message ResetMessage Printing Blank sheets printedHas gray background Prints all blackHas repeating marks An oblong area of faint print appears on eachFaded print after installation Print is smeared or blotchedPrinted page is light or blurred Bold characters and dark lines are smearedAdjusting Print Quality Software ProblemsMaintenance Menu Level-1 MenuStrange symbols appear during normal printing Last page of document is not printedFirst line on page won’t print Graphics won’t position properlyHardware Problems OdorsAppendix a Service & Support How to Get ServiceOkidata Service Centers Purchasing SuppliesInternet Ways to PurchaseAppendix B Specifications General SpecificationsPaper Handling Specifications Environmental SpecificationsElectrical Specifications Physical SpecificationsPower Specifications are subject to change without noticeEnglish-67 Appendix C Installing SIMMsInstalling SIMMs Pull the side panel out and remove it from the printer Appendix C Installing SIMMs Print Menu displays then the menu prints English-71 Limited WarrantyOn-Site Repair United States CanadaArgentina ChileMaterial Safety Data Sheet Okipage 20 TonerSpill Cleanup and Disposal Special PrecautionsHealth Hazard Data Reactivity DataIndex English-75IBM Proprinter emulation Index 65-66Page