ALFA 20 Serial Connection RS232-C, Attach the Serial Cable, RS232-C Serial Interface, Serial Mode

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Serial Connection: RS232-C

Attach the Serial Cable

To connect the printer to your computer:

1.Turn both your printer and computer OFF.

2.Insert the male connector on the cable into the serial port on your printer. Make sure the connector is fully inserted, then tighten the screws.

3.Insert the other end of the cable into the serial port on your computer and tighten the screws.

Caution!Be sure not to over tighten the screws — this could damage the screw posts!

RS232-C Serial Interface

Serial cable requirements:

•Cable must be shielded with twisted pair conductors, and must be UL and CSA approved

•Maximum length for serial cable is 6 feet (1.8 meters).

•Printer connector is Type 17LE-13250-27 (D4CC) receptacle (25 pins)

Serial Mode

The serial interface settings on your printer and computer must match. To change printer settings, enter the Level 2 menu (press ON-LINE to place the printer off-line, then press MENU 1/Menu 2 for 2 seconds, until PRINT MODE appears) and select the RS232C SERIAL category. Set FLOW CON- TROL, BAUD RATE, DATA BITS, PARITY, and MIN. BUSY to match the settings on your computer. Following are the printer default settings for these parameters:

FLOW CONTROL DTR HI POLARITY

BAUD RATE	9600 BAUD
DATA BITS	8 BITS
PARITY	NONE
MIN. BUSY	200 mSECONDS

Serial Interface Pin Assignments

Pin	Signal	Symbol	Direction

1	Frame Ground	FG	-

2	Transmitted Data	TD	To printer

3	Received Data	RD	To printer

4	Request to Send	RTS	From printer

5-6	-	-	-

7	Signal Ground	SG	-

8-17	-	-	-

18	+5V (50 ma max.)	-	From printer

19	-	-	-

20	Data Terminal Ready	DTR	From printer

21-25	-	-	-

Chapter 1: Setting Up

E–11

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Contents Okidata Okidata Publications DepartmentContents Duplex Printing English-iii Important Safety InstructionsFor more information Warranty Enhancement ProgramsOKI Extend OKI On-SiteEnglish-v FCC/IC/CE StatementsFCC/IC/CE Unpack Setting UpCheck the contents Select a Suitable LocationFront View Getting to Know Your PrinterPrepare the Image Drum Setting UpInstall the Toner Load Paper Paper SpecificationsPaper Feed Paths Paper Tray Gauge Load the Paper TraySelect a Paper Exit Path Storing PaperRear Paper Exit Top Paper ExitAttach the Parallel Cable Bi-Directional Parallel ModeConnect to Your Computer Parallel ConnectionECP Parallel Interface Pin AssignmentsRS232-C Serial Interface Serial ModeSerial Connection RS232-C Attach the Serial CablePrint the Demo Connect to PowerInstall the Printer Software Check the Menu Model 20DX OnlyControl Panel Lights Paper Size IndicatorControl Panel Select the Display LanguageButton Function Summary Control Panel Button FunctionsPrinter Menus Selecting Printer Features Using Your Printer DriverSelecting Printer Features Using the Printer Main Menus How to Use the Main MenusUsing the Level-1 Menu Quick Access MenusPrinter Menus Level-1 Menu SettingsSummary of Level-1 Categories Light to Heavy weight values are same as specified for Tray Fonts & Symbols Default settings below are in italic Level-2 Menu Settings Using the Level-2 MenuSummary of Level-2 Categories Auto Operation Clearable Wrnings Maintenance Menu Settings Summary of Maintenance Menu CategoriesDUP ADJ Page English-27 Front FeederEnvelopes Using the Front Feeder to Print Multiple Pieces of Media Front Feeder Setting up Manual Feed for Standard Weight PaperFront Feeder Printing Individual Pieces Manual Feed Manual Feed Standard PaperManual Feed Envelopes Setting up to Print an EnvelopeManual Feed Labels Setting up to Print LabelsManual Feed Transparencies Setting up to Print a TransparencySetting up to Print Heavy Stock Heavy Card Stock SpecificationsManual Feed Heavy Card Stock Printer goes off-line Using the Automatic Tray Switch FeatureDuplex Printing Windows Duplex PrintingPortrait Versus Landscape Duplex Printing Windows NTClick Print on Both Sides Duplex Printing Click Start, Settings, PrintersClick Document Defaults Click PropertiesSummary of Available Fonts FontsAvailable Fonts Printing a Sample of Resident FontsGaramond 61 Symbol Sets CG Omega 61 Symbol SetsUnivers Condensed 61 Symbol Sets Antique Olive 61 Symbol SetsAdobe PostScript Fonts Option Using Bar Code FontsSymbol Sets Selecting FontsPage Optional Paper Handling Accessories AccessoriesAdditional Options Expanded Memory SIMMs Simm ConfigurationsMB P/N Image Drum Type 7 P/N MaintenanceGeneral Consumables Information Toner Cartridge Type 7 P/NReplacing the Toner Cartridge P/N Maintenance Replacing the Image Drum Cartridge P/N PrecautionsDisplays Generating a Drum Cleaning Cleaning the LED ArrayEnglish-49 Problem SolvingPaper Jams Paper Jam MessagesClearing Paper Jams Why Paper Jams OccurClearing a Paper Input Jam Clearing a Paper Feed Jam Problem SolvingClearing a Duplex Feeder Open Jam Clearing Duplex Feeder Paper JamsClearing a Paper Exit Jam Clearing Duplex Feeder Input JamsClearing Duplex Feeder Jams 1 Clearing Duplex Feeder Jam Printer Display MessagesMessage Error Message Paper OUT Message OFF-LINEBlank sheets printed Print Quality ProblemsMessage Reset Message PrintingAn oblong area of faint print appears on each Has gray backgroundPrints all black Has repeating marksBold characters and dark lines are smeared Faded print after installationPrint is smeared or blotched Printed page is light or blurredLevel-1 Menu Adjusting Print QualitySoftware Problems Maintenance MenuGraphics won’t position properly Strange symbols appear during normal printingLast page of document is not printed First line on page won’t printOdors Hardware ProblemsHow to Get Service Appendix a Service & SupportWays to Purchase Okidata Service CentersPurchasing Supplies InternetEnvironmental Specifications Appendix B SpecificationsGeneral Specifications Paper Handling SpecificationsSpecifications are subject to change without notice Electrical SpecificationsPhysical Specifications PowerInstalling SIMMs Appendix C Installing SIMMsEnglish-67 Pull the side panel out and remove it from the printer Appendix C Installing SIMMs Print Menu displays then the menu prints On-Site Repair Limited WarrantyEnglish-71 Chile United StatesCanada ArgentinaOkipage 20 Toner Material Safety Data SheetReactivity Data Spill Cleanup and DisposalSpecial Precautions Health Hazard DataEnglish-75 IndexIBM Proprinter emulation 65-66 IndexPage