Oki 490 User Manual Page 1

User’sGuide59348401

10Note: For rear feed, the paper lever must be forward.Chapter 3: Using Your PrinterParts Identification: Rear Feed(Continuous Forms)Note: The serial

Using Your Printer 11Parts Identification: Top Feed(Single Sheets)Paper GuidesSheet GuidePaper LeverOn-Off SwitchPlaten KnobControl PanelAcoustic Cove

12 Microline 490/491 User’s GuideTop of Form (TOF)Important!If you turn the platen knob when the printer is on, the Top ofForm misaligns. Always shut

Using Your Printer 13Determining if Forms Tear-Off is Off or OnThere are two ways to determine the status of the FormsTear-Off menu setting:• Print th

14 Microline 490/491 User’s GuideSetting Top of Form (TOF):Forms Tear-Off OFF (Default Setting)Important!If you turn the platen knob when the printer

Using Your Printer 15Setting Top of Form (TOF):Forms Tear-Off Set to ONImportant!If you turn the platen knob when the printer is on, the Top ofForm mi

16 Microline 490/491 User’s GuideTemporarily Changing the Top of FormPositionImportantDo not use the platen knob to change the Top of Form. If youturn

Using Your Printer 17Forms Tear-Off FeatureNote: This feature is normally turned off. To use FormsTear-Off, you must enter the menu and change thesett

18 Microline 490/491 User’s GuideChanging the Forms Tear-Off SettingNote: The default setting for Forms Tear-Off is OFF.To change the Forms Tear-Off s

Using Your Printer 19Changing Paper PathsContinuous Forms to Single Sheets1 Tear off any printed pages, then press PARK.2 Raise the sheet guide (1) to

2Every effort has been made to ensure that the information inthis document is complete, accurate, and up-to-date. Oki Dataassumes no responsibility fo

20 Microline 490/491 User’s GuideSingle Sheets to Continuous Forms1 Press FF/LOAD to remove the single-sheet paper.2 Lower the sheet guide into the co

Using Your Printer 21To adjust the gap, open the access cover and move the bluelever (1) to the recommended setting from the table.Setting Media1 Regu

22 Microline 490/491 User’s GuidePrint QualityImportant!Front panel settings for print quality and character pitch arenormally overridden by software

Using Your Printer 23Typefaces: LQ ModeImportant!Front panel settings for print quality and typeface arenormally overridden by software commands.To se

24 Microline 490/491 User’s GuideCharacter PitchImportant!Front panel settings for character pitch are normallyoverridden by software commands.Charact

Using Your Printer 25Printer ResetClearing some error conditions requires that you reset(reinitialize) the printer. To do this:1 Press and release SEL

26Chapter 4: Menu ModeGROUP KeyPrints the next Group in the Menu.With the SHIFT key, prints the previous Group.ITEM KeyPrints the next Item in the Gro

Menu Mode 27Entering and Exiting Menu ModeTo enter or exit the Menu Mode, hold SHIFT while pressingSEL.Resetting the Menu to the Factory DefaultsNote:

28 Microline 490/491 User’s GuideChanging the Menu SettingsNote: Please print the current Menu Mode settings before youreset or change them. This is t

Menu Mode 29Menu Settings TableFor a complete explanation of each menu item, see “Explanations of Menu Items” later in this chapter.The table below sh

3SafetyYour Oki printer has been carefully designed to give you yearsof safe, reliable performance. As with all electrical equipment,there are a few b

30 Microline 490/491 User’s GuideMenu Settings Table (Continued)Group Item Settings (Defaults are set in bold italic)Rear Feed Line Spacing 6 LPI, 8 L

Menu Mode 31Menu Settings Table (Continued)Group Item Settings (Defaults are set in bold italic)Top Feed Line Spacing 6 LPI, 8 LPIForm Tear-Off* Off,

32 Microline 490/491 User’s GuideMenu Settings Table (Continued)Group Item Settings (Defaults are set in bold italic)Setup (cont.) Operator Panel Func

Menu Mode 33Menu Settings Table (Continued)Group Item Settings (Defaults are set in bold italic)Parallel I/F I-Prime Buffer Print, Buffer Clear, Inval

34 Microline 490/491 User’s GuideMenu Settings Table (Continued)Group Item Settings (Defaults are set in bold italic)CSF Bin 1* Line Spacing 6 LPI, 8

Menu Mode 35Explanations of Menu ItemsThese explanations are in alphabetical sequence to make iteasier to look them up. Some items only appear when op

36 Microline 490/491 User’s GuideBusy Line, Default = SSD-Appears only when the optional Serial Interface is installed. IfReady/Busy protocol (factory

Menu Mode 37DTR Signal, Default = Ready on Power UpAppears only when the optional Serial Interface is installed.Change to Ready on Select if the DTR s

38 Microline 490/491 User’s GuideOperator Panel Function, Default = Full OperationChange to Limited Operation to deactivate the PRINT QUALITYand CHARA

Menu Mode 39Power Save Time, Default = 5 minSets the interval the printer waits for more data before it goesinto the power save mode. Power Saving mus

4 Microline 490/491 User’s Guide• Unplug the printer before you clean it. Use only a dampcloth. Do not use liquid or aerosol cleaners.• To protect you

40 Microline 490/491 User’s GuideSerial Data 7/8 Bits, Default = 8 BitsAppears only if the optional Serial Interface is installed.Change to 7 Bits if

411 Make sure the printer is turned OFF.2 Open the access cover and center the printhead.Chapter 5: MaintenanceReplacing the Ribbon CartridgeImportant

42 Microline 490/491 User’s GuideCAUTION!The printhead may be HOT!3 Swing the used ribbon cartridge up off the printhead, lift itout, and discard it.4

Maintenance 43Loading PaperRear FeedNote: If you have any paper in the paper path, remove itbefore installing rear feed paper.Lock LeverUpper Tractor

44 Microline 490/491 User’s Guide3 Grasp the sheet guide. Lift it slightly, then slide it back. 4 Pivot the sheet guide forward and gently rest it aga

Maintenance 456 Open the lock levers (1) and move the right tractor (asviewed from the back of the printer) to the reference mark(2) matching the widt

46 Microline 490/491 User’s Guide8 Place continuous forms paper on the first two pins of eithertractor.Important!You must keep the number of paper hol

Maintenance 4711 Lower the sheet guide and slide it toward the front of theprinter until the marks align.12 Place the wire guide (“1” in the illustrat

48 Microline 490/491 User’s GuideLoading Rear Feed Paper from the Front of the PrinterNote: These instructions assume you do not have ready accessto t

Maintenance 49Note: The movement of the left tractor (as viewed from thefront of the printer) is restricted to ensure that thepaper covers the paper o

5Safety... 3Chapter 1: Introduction ...

50 Microline 490/491 User’s Guide8 Adjust the position of the right tractor to center the holes inthe paper on the pins. Then, close its tractor cover

Maintenance 5110Place the wire guide (1) in the sheet guide on the pull-uproller assembly.11 Press FF/LOAD.Note: The factory default setting for the T

52 Microline 490/491 User’s Guide3 Open the acoustic cover (1) and raise the sheet guide to thesingle-sheet position. Pivot the wire feed guide (2) up

Maintenance 534 Adjust the paper feed guides (1) for the width of the paper,then place a sheet of paper in the separator. The paper willfeed into the

54 Microline 490/491 User’s GuideClearing Paper JamsRear-Feed Paper Jams1 Turn off the printer.2 Use the platen knob to back the paper all the way out

Maintenance 55Bits of Paper Stuck in the Paper Path1 Turn off the printer.2 Use the platen knob to back the paper all the way out of theprinter.CAUTIO

56 Microline 490/491 User’s Guide4 Remove any torn pieces of paper.5 Fold some continuous-form paper over three times to make apage four sheets thick.

Maintenance 57Single-Sheet Paper Jams1 Turn off the printer.2 Use the platen knob to back the paper out.3 Open the access cover (1) and remove the pul

58 Microline 490/491 User’s GuideCleaning the HousingYou should clean the printer housing every six months (or afterabout 300 hours of operation).CAUT

59Chapter 6: TroubleshootingGeneral InformationHere are some general things to check before proceeding withdetailed troubleshooting.• Is the printer p

6 Microline 490/491 User’s GuideChapter 4: Menu Mode ... 26Menu Mode Keys ...

60 Microline 490/491 User’s GuideProblems / SolutionsProblemMy word processor files do not print the way I have the menuand front panel set.SolutionRe

Troubleshooting 61ProblemThe printer does not print when the computer sends data.Solutions1 Is the SEL light on? If not, press the SEL key.2 Check tha

62 Microline 490/491 User’s GuideProblemInk smears on the paper when I print narrow columns.SolutionThis may be caused by excessive printhead travel f

Troubleshooting 63ProblemThere are dots missing in my printouts.SolutionThe head gap may not be set correctly. Try moving the headgaplever to a lower

64 Microline 490/491 User’s GuideProblemThe printer needs paper. The ALARM is not on. I can’t loadpaper.Solution1 Press and release the SEL key.2 Pres

65Appendix A: Parts & AccessoriesPurchasing Parts & AccessoriesBefore you purchase, know your printer model number (see thefront of the unit)

66 Microline 490/491 User’s GuideReplacement PartsItem Part NumberBoth ModelsRibbon Cartridge () ------------------------------- 42377801Platen Knob (

Accessories 67AccessoriesOption Part NumberModel ML490Pull Tractor, Top-Mount ()----------------------- 70030501Push Tractor, Bottom-Mount () --------

68Appendix B: Printer Control CodesThis section lists the most commonly used printer controlcodes.You will find a comprehensive listing of the control

Control Codes 69Epson LQ Commands (Continued)Epson Command ASCII DecimalCharacter StyleNormal ESC q 0 27 113 48Outline ESC q 1 27 113 49Shadow ESC q 2

7Chapter 1: IntroductionOki Data on the InternetThe Oki Data Web Sites provide the most current informationavailable on your printer.On-line documents

70 Microline 490/491 User’s GuideEpson LQ Commands (Continued)Epson Command ASCII DecimalLine Feed, Executew/ Carriage Return LF 10n/180" (n = 0

Control Codes 71Epson LQ Commands (Continued)Epson Command ASCII DecimalPrint SpeedHalf-Speed On ESC s 1 27 115 49Half-Speed Off ESC s 0 27 115 48Prin

72 Microline 490/491 User’s GuideIBM Proprinter X24e / XL24e andIBM X24e AGM / XL24e AGMCommandsIBM Command ASCII DecimalBackspace BS 8Cancel CAN 24Ca

Control Codes 73IBM Commands (continued)IBM Command ASCII DecimalPrint One Character fromIBM Set III(n = 0 to 255) ESC ^ n 27 94 nItalic Printing On E

74 Microline 490/491 User’s GuideIBM Commands (Continued)IBM Command ASCII DecimalPaper Out Sensor Off ESC 8 27 56Paper Out Sensor On ESC 9 27 57Print

75Appendix C: SpecificationsNote: Specifications are subject to change without notice.Print MethodImpact dot matrixPrinthead24 pins, 0.20 mm (0.0079&q

76 Microline 490/491 User’s GuideEmulations (co-resident)• Epson LQ• IBM Proprinter X24e / XL24e• IBM X24e AGM / XL24e AGMPrint SpeedMode Pitch SpeedH

Specifications 77Resident FontsPrint Quality Available FontsLetter Quality Courier, Gothic, Orator, Prestige,Roman, Swiss, Swiss BoldUtility GothicBar

78 Microline 490/491 User’s GuidePaper Specifications: ML490Single (Cut) SheetsFeed: Top OnlyWeight: 14 to 24 lb. US Bond (52.6 to 90 g/m2)Width Range

Specifications 79Paper Specifications: ML491Single (Cut) SheetFeed: Top OnlyWeight: 14 to 24 lb. US Bond (52.6 to 90 g/m2)Width Range: 7.2" to 14

8Chapter 2: Helpful HintsSaving TimeInternet SupportOki Data provides support via the Internet:•www.okidata.com is the main web site, the gateway to O

80 Microline 490/491 User’s GuideEnvironmental RequirementsTemperatureOperating: 41 to 95°F (5 to 36°C)Storage: 14 to 122°F (-10 to 50°C)HumidityOpera

81Appendix D: InstallationLocation• Place your printer on a firm, solid surface.• Allow enough space around the printer to easily access theplaten kno

82 Microline 490/491 User’s Guide1 Remove any packing tape, then grasp the tabs (1) at eitherend of the access cover and pivot it toward the front of

Installation 834 Use the tabs (1) to lift and remove the sheet guide, thenremove the shipping restraint.5 Reinstall the sheet guide: insert the clips

84 Microline 490/491 User’s GuideCAUTION!The printhead may be HOT!3 Unpack the new ribbon cartridge and install it on theprinthead.Important!Do not re

Installation 85Power Connection1 Make sure both the printer and the computer are OFF.2 Plug the power cord into the back of the printer, then into agr

86 Microline 490/491 User’s GuideUSB: Specification 1.1 Compliant• Requires USB 1.1 cable, maximum length 19.7 ft. (5 m), notsupplied.• Printer has US

Installation 87Testing the Printer• Font Sample Test• Rolling ASCII Test• Hexadecimal Dump ModeFont Sample TestImportant!Wide carriage Model ML491: If

88 Microline 490/491 User’s GuideRolling ASCII TestImportant!Wide carriage Model ML491: If you are using 8.5" paper torun the tests, make sure th

Installation 89Hexadecimal Dump ModeWhen the printer is placed in the Hexadecimal Dump Mode, alldata received, including text and printer commands, is

Helpful Hints 9Operation TipsTop of Form (TOF)Top of Form (TOF) sets the print start position. The factorydefault is 1" from the top.The Top of F

90 Microline 490/491 User’s GuideLoading the OKI DriverParallel Interface1 Insert the CD into your CD-ROM drive.Note: If the CD does not AutoPlay, cli

91AAccessories ...67Alignment problems ... 9ASCII Test ...

92 Microline 490/491 User’s GuideFFactory defaults, menu mode ... 27Font Sample Test ... 87FontsEmbedde

Index 93OOperator Panel Function ... 64Options, purchasing ...65Orator font ...

94 Microline 490/491 User’s GuideResolution (Graphics)........ 76Ribbon CartridgeReplacement Part No. .......66R