Oki ML420 - Manuals - manualsarea.com

Page 2 - Trademark Information

2 ML 420/421 User’s Guide P/N 59348301, Revision 1.2 February, 2006 Every effort has been made to ensure that the information inthis document is complete, accurate, and up-to-date. Oki Dataassumes no responsibility for the results of errors beyond itscontrol. Oki Data also cannot guarantee that chan...

Page 3 - Safety

3 Safety Your Oki printer has been carefully designed to give you yearsof safe, reliable performance. As with all electrical equipment,there are a few basic precautions you should take to avoidhurting yourself or damaging the printer: • Carefully read all setup and operating instructions. Be sure to...

Page 5 - Contents

5 Contents Safety ............................................................................ 3 Chapter 1: Introduction ............................................. 7 Printer Features ............................................................................... 7 Chapter 2: Helpful Hints ..........

Page 7 - Chapter 1: Introduction; Oki Data on the Internet

7 Chapter 1: Introduction Oki Data on the Internet The Oki Data Web Sites provide the most current informationavailable on your printer. On-line documents are available for viewing and downloadingvia Oki Data’s Web Sites. You may reach Oki Data via the Internet at: • www.okidata.com • my.okidata.com...

Page 8 - Chapter 2: Helpful Hints; Saving Time; Internet Support; Oki Data provides support via the Internet:; Paper Park; For more information, see “Paper Park” in Chapter 3.

8 Chapter 2: Helpful Hints Saving Time Internet Support Oki Data provides support via the Internet: • www.okidata.com is the main web site, the gateway to Oki Data’s products and services. • http://my.okidata.com is a powerful area of Oki Data’s web site designed to help you personalize the informat...

Page 9 - Operation Tips; Turning the Platen Knob; When Limited Operation is selected, the; and; keys don’t work. This prevents these

Helpful Hints 9 Operation Tips Top of Form (TOF) Top of Form (TOF) sets the print start position. The factorydefault is 1" from the top. The Top of Form can be changed in increments of 1/180",either for a single print job or set to a new default. The overallamount of adjustment is limited to...

Page 10 - Chapter 3: Using Your Printer; Parts Identification: Rear Feed; Note: The serial number of your printer is on a label on the

10 Note: For rear feed, the paper lever must be forward. Chapter 3: Using Your Printer Parts Identification: Rear Feed (Continuous Forms) Note: The serial number of your printer is on a label on the back, beside “S/N.” Sheet Guide Paper Lever On-Off Switch Platen Knob Control Panel Acoustic Cover Ac...

Page 11 - Parts Identification: Top Feed; Paper Guides

Using Your Printer 11 Parts Identification: Top Feed (Single Sheets) Paper Guides Sheet Guide Paper Lever On-Off Switch Platen Knob Control Panel Acoustic Cover (open) Note: For single-sheet printing, the paper lever must be in the middle position.

Page 13 - Determining if Forms Tear-Off is Off or On

Using Your Printer 13 Determining if Forms Tear-Off is Off or On There are two ways to determine the status of the FormsTear-Off menu setting: • Print the Menu. • Use the TEAR key. To print the Menu: 1 Make sure paper is loaded. 2 Hold SHIFT (2), then press SEL (1) to enter the Menu Mode. 3 Press PA...

Page 14 - When you have the TOF set where you want it, press and; Press

14 Microline 420/421 User’s Guide Setting Top of Form (TOF): Forms Tear-Off OFF (Default Setting) Important! If you turn the platen knob when the printer is on, the Top ofForm misaligns. Always turn the printer off before turningthe platen knob! Note: The first line prints at the red line (1) of the...

Page 15 - Forms Tear-Off Set to ON

Using Your Printer 15 Setting Top of Form (TOF): Forms Tear-Off Set to ON Important! If you turn the platen knob when the printer is on, the Top ofForm misaligns. Always turn the printer off before turningthe platen knob! Note: The first line prints at the red line (1) of the plastic paper shield on...

Page 16 - Important; to deselect the printer.; Press; to lower the position of the Top of Form.; Resetting Top of Form to the Factory Default; To reset the Top of Form to the factory default:; Remove paper from the paper path.; Turn the printer off.; Press and hold; while turning on the

16 Microline 420/421 User’s Guide Temporarily Changing the Top of Form Position Important Do not use the platen knob to change the Top of Form. If youturn the platen knob when the printer is turned on, the Top ofForm misaligns. Always turn the printer off before turningthe platen knob! To move the T...

Page 17 - Forms Tear-Off Feature; Note: This feature is normally turned off. To use Forms; Notes: The status of the Forms Tear-Off menu setting affects; Potential Problems with Software Packages; If this occurs, use the menu to turn off this feature, then use the; key to move the paper up to the tear position manually

Using Your Printer 17 Forms Tear-Off Feature Note: This feature is normally turned off. To use Forms Tear-Off, you must enter the menu and change thesetting to the desired time interval (see next page). The Forms Tear-Off feature allows a printed continuous formspage to be torn off without wasting p...

Page 18 - Changing the Forms Tear-Off Setting; Press; Manual Forms Tear Off; or

18 Microline 420/421 User’s Guide Changing the Forms Tear-Off Setting Note: The default setting for Forms Tear-Off is OFF. To change the Forms Tear-Off setting: 1 Press SHIFT (2) + SEL (1). 2 Press GROUP (3) repeatedly until the Rear Feed or Bottom Feed group shows in the first column of the printed...

Page 19 - Changing Paper Paths; Continuous Forms to; Tear off any printed pages, then press; Pivot the wire feed guide into the sheet guide.; then place a sheet of paper in the sheet guide.

Using Your Printer 19 Changing Paper Paths Continuous Forms to Single Sheets 1 Tear off any printed pages, then press PARK . 2 Raise the sheet guide (1) to the single-sheet feed position. 3 Pivot the wire feed guide into the sheet guide. 4 Move the paper lever (1) to the middle position marked “TOP....

Page 20 - Single Sheets to Continuous Forms

20 Microline 420/421 User’s Guide 4 Move the paper lever to the appropriate position. • Rear feed: • Bottom feed: 5 If necessary, load continuous-form paper. 6 Press FF/LOAD . Single Sheets to Continuous Forms 1 Press FF/LOAD to remove the single-sheet paper. 2 Lower the sheet guide into the continu...

Page 21 - Setting; Printhead Gap

Using Your Printer 21 To adjust the gap, open the access cover and move the bluelever (1) to the recommended setting from the table. Setting Media 1 Regular paper 2 2-part form (with carbon) 3 3-part form (with carbon) 4 4-part form (with carbon) 5 Envelopes or extra thick paper Note: When the head ...

Page 22 - Print Quality; Press; UTL: Utility—the default

22 Microline 420/421 User’s Guide Print Quality Important! Front panel settings for print quality and character pitch arenormally overridden by software commands. Press PRINT QUALITY (1) to select: UTL: Utility—the default • Medium quality, medium speed (380 cps) • Gothic typeface only HSD: High Spe...

Page 23 - Epson and IBM Emulations; MICROLINE Emulation; both the cpi value and PROP lights are lit.; Character Pitch; Note: To reset the printer to the factory default character; key while pressing the

Using Your Printer 23 Epson and IBM Emulations Set the character pitch by pressing CHARACTER PITCH (1) until the light beneath the desired setting is lit: • 10 cpi• 12 cpi• 15 cpi• 17 cpi• 20 cpi• Proportional MICROLINE Emulation In the MICROLINE emulation, the Character Pitch choices are: • 10 cpi,...

Page 24 - Printer Reset; The; Pressing; reinitializes the printer, but does not; Emulations; Changing Emulations; The following line prints:

24 Microline 420/421 User’s Guide Printer Reset Clearing some error conditions requires that you reset(reinitialize) the printer. To do this: 1 Press and release SEL (1) to take the printer off-line. The SEL light goes out. 2 Press and hold SHIFT (2), then press the RESET / CHARACTER PITCH key. Impo...

Page 25 - GROUP Key; ITEM Key; SET Key; PRINT Key; MENU Light; Menu Mode Keys

25 Chapter 4: Menu Mode GROUP Key Prints the next Group in the Menu. With the SHIFT key, prints the previous Group. ITEM Key Prints the next Item in the Group. With the SHIFT key, prints the previous Item in the Group. SET Key Prints the next setting for an Item. With the SHIFT key, prints the previ...

Page 26 - Note: Please print the current Menu Mode settings before you; Printing the Menu Settings; Printing the Current Menu Settings

26 Microline 420/421User’s Guide Entering and Exiting Menu Mode To enter or exit the Menu Mode, hold SHIFT while pressing SEL . Resetting the Menu to the Factory Defaults Note: Please print the current Menu Mode settings before you reset or change them. This is the only way to have arecord of the se...

Page 27 - Changing the Menu Settings

Mode Menu 27 Changing the Menu Settings Note: Please print the current Menu Mode settings before you reset or change them. This is the only way to have arecord of the settings. 1 Press and hold SHIFT , then press SEL to enter the Menu Mode. 2 Use the GROUP , ITEM and SET keys to make your changes: a...

Page 28 - Menu Settings Table; Group; Settings (Defaults are set in bold italic)

28 Microline 420/421User’s Guide Menu Settings Table For a complete explanation of each menu item, see “Explanations of Menu Items” later in this chapter. The table below shows the items which may appear in the menu. Settings which are engaged at the factory (defaults) are set in bolditalic. Some gr...

Page 29 - Settings (Defaults are set in bold italic)

Mode Menu 29 Menu Settings Table (Continued) Group Item Settings (Defaults are set in bold italic) Rear Feed Line Spacing 6 LPI, 8 LPI Form Tear-Off Off, 500 ms, 1 sec, 2 sec Skip Over Perforation No, Yes Page Width (wide model) 13.6", 8" Page Length 11", 11-2/3", 12", 14", 1...

Page 35 - Explanations of Menu Items; Change this setting to 8 if your system uses 8-bit graphics.

Mode Menu 35 Explanations of Menu Items These explanations are in alphabetical sequence to make iteasier to look them up. Some items only appear when optionalaccessories are installed; others appear in several groups in themenu. 7 or 8 Bit Graphics, Default = 7 Change this setting to 8 if your syste...

Page 38 - key while turning on the printer.

38 Microline 420/421User’s Guide I-Prime, Default = Buffer Print Determines what the printer will do when it receives theI-Prime signal from the software. • Buffer Print: prints out the buffer contents before resetting. • Buffer Clear: dumps the buffer contents immediately. • Invalid: causes the pri...

Page 39 - Wide carriage model only.

Mode Menu 39 Page Width, Default = Depends on Feed Path Wide carriage model only. For rear and bottom paths, the default is 13.6". Change to 8" ifyou will be printing on narrow paper. This prevents printing onthe platen which can damage the printhead and the platen, andcan cause loss of data...

Page 40 - Note: This will also prevent your software from clearing out

40 Microline 420/421User’s Guide Print Mode, Default = Utility Choose the quality and typeface of printing. Switch to NLQCourier or NLQ Gothic for Near Letter Quality printing. If youare printing draft-type documents, select DRAFT, then selecteither HSD or SSD under DRAFT Mode. Both of these Itemsar...

Page 41 - Change to Double for double width and height printing.

Mode Menu 41 SI Select Pitch 12 cpi, Default = 20 cpi IBM emulation only. Sets the pitch to be engaged when theprinter control panel is set for 12 cpi and the SI command isreceived. Size, Default = Single Change to Double for double width and height printing. Skip Over Perforation, Default = No Chan...

Page 42 - Make sure the printer is turned OFF.; Open the access cover and center the printhead.; Chapter 5: Maintenance; Replacing the Ribbon Cartridge; Ribbon Cartridge Handling

42 1 Make sure the printer is turned OFF. 2 Open the access cover and center the printhead. Chapter 5: Maintenance Replacing the Ribbon Cartridge Important! Make sure you have the correct replacement ribbon for theyour printer. The wrong ribbon will not print when installedin your printer. Look for ...

Page 43 - The printhead may be HOT!; Swing the used ribbon cartridge up off the printhead, lift it; take up any ribbon slack.; Close the access cover and turn the printer back on.; If ribbon should contact the eyes:

Maintenance 43 CAUTION! The printhead may be HOT! 3 Swing the used ribbon cartridge up off the printhead, lift it out, and discard it. 4 Unpack the new ribbon cartridge and install it. Important! Do not remove the ribbon shield (1) from the ribbon! 5 Turn the take-up knob (1) in the direction of the...

Page 44 - Loading Rear Feed Paper from the; of the Printer; Loading Paper; Note: If you have any paper in the paper path, remove it

44 Microline 420/421 User’s Guide Loading Rear Feed Paper from the Back of the Printer Note: These instructions assume you have ready access to the back of the printer. If you do not, skip down to “LoadingRear Feed Paper from the Front of the Printer.” 1 Make sure the paper lever is forward (positio...

Page 45 - Pivot the sheet guide forward and gently rest it against the

Maintenance 45 4 Pivot the sheet guide forward and gently rest it against the roller assembly. Careful! If you push the sheet guide too hard against the rollerassembly, it may dislodge it. If it does, be sure to reseat theroller assembly before continuing. 3 Grasp the sheet guide. Lift it slightly, ...

Page 46 - Open the tractor covers.

46 Microline 420/421 User’s Guide 6 Open the lock levers (1) and move the right tractor (as viewed from the back of the printer) to the reference mark(2) matching the width of the paper you are loading. Thenclose the lock lever on the right tractor: Note: The movement of the right tractor is limited...

Page 47 - Place continuous forms paper on the first two pins of either; Note: If the paper is too loose or too tight it can cause jams.

Maintenance 47 8 Place continuous forms paper on the first two pins of either tractor. Important! You must keep the number of paper holes engaged on eitherpin the same. If you don’t the paper will skew and jam. 9 Close the right tractor cover. 10 Adjust the left tractor until the holes in the paper ...

Page 48 - 1 Lower the sheet guide and slide it toward the front of the; printer until the marks align.; 2 Place the wire guide (“1” in the illustration for the step; Note: The factory default setting for the Top of Form (where

48 Microline 420/421 User’s Guide 11 Lower the sheet guide and slide it toward the front of the printer until the marks align. 12 Place the wire guide (“1” in the illustration for the step above) in the sheet guide on the pull-up roller assembly. 13 Press FF/LOAD . Note: The factory default setting ...

Page 49 - Grasp the tabs and lift off the sheet guide.

Maintenance 49 Loading Rear Feed Paper from the Front of the Printer Note: These instructions assume you do not have ready access to the back of the printer. If you do, go back to “LoadingRear Feed Paper from the Rear of the Printer” earlierin this chapter. Lock Lever Upper Tractor Cover Pins 1 Make...

Page 50 - Note: The movement of the left tractor (as viewed from the; You will find reference marks (1 in illustration below) on the; printer for the two most common paper sizes:; Move the left tractor to the position to match your paper size

50 Microline 420/421 User’s Guide Note: The movement of the left tractor (as viewed from the front of the printer) is restricted to ensure that thepaper covers the paper out sensor. 5 You will find reference marks (1 in illustration below) on the printer for the two most common paper sizes: ML420: M...

Page 51 - Adjust the position of the right tractor to center the holes in; Reinstall the sheet guide.

Maintenance 51 8 Adjust the position of the right tractor to center the holes in the paper on the pins. Then, close its tractor cover and pushback the lock lever. Do not stretch the paper. Note: If the paper is too loose or too tight it can cause jams. 9 Reinstall the sheet guide.

Page 52 - 0 Place the wire guide (1) in the sheet guide on the pull-up

52 Microline 420/421 User’s Guide 10 Place the wire guide (1) in the sheet guide on the pull-up roller assembly. 11 Press FF/LOAD . Note: The factory default setting for the Top of Form (where the printing should begin) is 1" down from the top of thepage. To change the setting, see “Top of Form ...

Page 53 - Open the acoustic cover (1) and raise the sheet guide to the; Note: If you have continuous form paper in the path, press; to remove it before loading single sheets.; Place the paper lever in the center position (marked “TOP”).

Maintenance 53 3 Open the acoustic cover (1) and raise the sheet guide to the single-sheet position. Pivot the wire feed guide (2) up intothe sheet guide. Top Feed (Single Sheets) Note: If you have continuous form paper in the path, press PARK to remove it before loading single sheets. 1 Make sure t...

Page 54 - Adjust the paper feed guides (1) for the width of the paper,; hold the; key and press the

54 Microline 420/421 User’s Guide 4 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 printer. Important! If the paper does not feed in, remove it. Check the paper leverposition. Make sure the ALARM light is on: if ...

Page 55 - Clearing Paper Jams; Turn off the printer.; lock the tractor covers.; Lower the sheet guide, then install the pull-up roller; assembly and close the access cover.; Turn on the printer and press

Maintenance 55 Clearing Paper Jams Rear-Feed Paper Jams 1 Turn off the printer. 2 Use the platen knob to back the paper all the way out of the printer. CAUTION! Make sure the printer is turned off before you open the accesscover. 3 Open the access cover (1) and remove the pull-up roller assembly (2)...

Page 57 - around the platen. This brings out jammed pieces of paper.

Maintenance 57 4 Remove any torn pieces of paper. 5 Fold some continuous-form paper over three times to make a page four sheets thick. Then, load it on the tractors and closeand lock the covers. 6 Use the platen knob to draw the quadruple-thick page around the platen. This brings out jammed pieces o...

Page 58 - Single-Sheet Paper Jams

58 Microline 420/421 User’s Guide Single-Sheet Paper Jams 1 Turn off the printer. 2 Use the platen knob to back the paper out. 3 Open the access cover (1) and remove the pull-up roller assembly (2). 4 Remove any torn pieces from around the carriage. 5 Reinstall the pull-up roller assembly and close ...

Page 59 - Cleaning the Housing

Maintenance 59 Cleaning the Housing You should clean the printer housing every six months (or afterabout 300 hours of operation). CAUTION! Never use strong solvents or strong detergents on thecabinet—they could damage the housing. 1 Turn off the printer. 2 Use the platen knob to back the paper out o...

Page 60 - Chapter 6: Troubleshooting; General Information; Note: Settings in your software application will normally

60 Chapter 6: Troubleshooting General Information Here are some general things to check before proceeding withdetailed troubleshooting. • Is the printer plugged in and turned on? • Are the connections (power and interface) secure? • Is the product being operated under the proper ambient conditions? ...

Page 61 - Problem

Troubleshooting 61 Problems / Solutions Problem My word processor files do not print the way I have the menuand front panel set. Solution Remember: • Settings in your software application can override settings in your printer driver. • Your printer driver settings can override any settings from the ...

Page 62 - Is the; Check that the interface cable is securely connected to both; Check to be sure that the printer driver you have selected in; If you have embedded any printer commands in your

62 Microline 420/421 User’s Guide Problem The printer does not print when the computer sends data. Solutions 1 Is the SEL light on? If not, press the SEL key. 2 Check that the interface cable is securely connected to both the printer and the computer. 3 If you have the optional serial interface boar...

Page 64 - key and correct the

64 Microline 420/421 User’s Guide Problem There are dots missing in my printouts. Solution The head gap may not be set correctly. Try moving the headgaplever to a lower setting. If that doesn’t help, the printhead maybe damaged; call for service. Problem The ALARM light is flashing. Solution Try tur...

Page 65 - Press and release the; Press and hold the; light comes on and you can now load paper.

Troubleshooting 65 Problem The printer needs paper. The ALARM is not on and I can’t loadpaper. 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 comes on and you can now load paper. Problem Continuous-form paper sticks...

Page 66 - Purchasing Parts & Accessories

66 Appendix A: Parts & Accessories Purchasing Parts & Accessories Before you purchase, know your printer model number (see thefront of the unit) and have the correct part number anddescription of the item. Item descriptions and part numbers areprovided in this section. • Consult the dealer w...

Page 67 - Replacement Parts; Item; Both Models

Accessories 67 Replacement Parts Item Part Number Both Models Ribbon Cartridge ( ) ------------------------------- 42377801 Platen Knob ( ) ------------------------------------- 51902220 Power Cord ( ) ------------------------------------- 56631801 Printhead ( ) -------------------------------------...

Page 68 - Option

68 Microline 420/421 User’s Guide Accessories Option Part Number Model ML420 Pull Tractor, Top-Mount ( ) ---------------------- 70030501 Push Tractor, Bottom-Mount ( ) ---------------- 70030701 Roll Paper Stand ( ) ------------------------------- 70023301 Model ML421 Pull Tractor, Top-Mount ( ) ----...

Page 69 - Appendix B: Printer Control Codes; Place the CD in your CD-ROM drive and wait for it to; IBM Proprinter III Commands; IBM Command

69 Appendix B: Printer Control Codes This section lists the most commonly used printer controlcodes. You will find a comprehensive listing of the control codes(English only), on your Printer CD. To access it: 1 Place the CD in your CD-ROM drive and wait for it to AutoPlay. 2 Select your printer mode...

Page 72 - Epson FX Commands

72 Microline 420/421 User’s Guide Epson FX Commands Epson Command ASCII Decimal Backspace BS 8 Carriage Return, Execute CR 13 Character Pitch Select 10 cpi ESC P 27 80 Select 12 cpi ESC M 27 77 Select 15 cpi ESC g 27 103 Begin 10 cpi ESC SI, or SI 27 15, or 15 Cancel Condensed Print DC2 18 Delete DE...

Page 75 - Oki MICROLINE Standard

Control Codes 75 Oki MICROLINE Standard Commands Oki Command ASCII Decimal Backspace BS 8 Carriage Return CR 13 Character Pitch Select 10 cpi RS 30 Select 12 cpi FS 28 Select 15 cpi ESC g 27 103 Select 17.1 cpi GS 29 Select 20 cpi ESC # 3 27 35 51 Character Sets Standard ESC ! 0 27 33 48 Block Graph...

Page 77 - Oki Command

Control Codes 77 Oki MICROLINE Standard Commands (continued) Oki Command ASCII Decimal Shift-In SI 15 Shift-Out SO 14 Software I-Prime ESC } NUL 27 125 0 Subscript Printing On ESC L 27 76 Subscript Printing Off ESC M 27 77 Superscript Printing On ESC J 27 74 Superscript Printing Off ESC K 27 75 Unde...

Page 78 - Appendix C: Specifications; Note: Specifications are subject to change without notice.; Print Method; Impact dot matrix; Printhead; Ethernet Print Servers:; Receive Buffer Size; Ribbon Life

78 Appendix C: Specifications Note: Specifications are subject to change without notice. Print Method Impact dot matrix Printhead 9 pins, 0.30 mm (0.0118") diameter, with thermalprotection Interfaces Standard: Centronics parallel, IEEE-1284 compliant USB 1.1 Optional: RS-232C Serial Ethernet Pri...

Page 79 - • IBM Proprinter III; Print Speed; Speed

Specifications 79 Emulations (co-resident) • IBM Proprinter III • Epson FX • Oki MICROLINE Standard Print Speed Speed Mode (Characters per Second) Super Speed Draft (SSD) 570 cps High Speed Draft (HSD) 507 cps Utility 380 cps Near Letter Quality (NLQ) 95 cps Characters per Line (cpl) Setting ML420 M...

Page 80 - Graphics Resolution; Emulation; Resident Fonts; Bar Codes

80 Microline 420/421 User’s Guide Graphics Resolution Max. Resolution Emulation Density (Dots per inch) IBM, Epson Single 60 x 216 dpi Double 120 x 216 dpi Quadruple 240 x 216 dpi Oki MICROLINE Single 72 x 72 dpi Double 144 x 144 dpi Quadruple 288 x 144 dpi Resident Fonts Print Quality Available Fon...

Page 81 - Paper Specifications: ML420; Labels

Specifications 81 Paper Specifications: ML420 Single (Cut) Sheets Feed: Top Only Weight: 14 to 24 lb. US Bond (52.6 to 90 g/m 2 ) Width Range: 7.2" to 8.5" (183 to 216 mm) Single-part, continuous forms Feed: Rear, Bottom* Weight: 12 to 24 lb. US Bond (45 to 90 g/m 2 ) Width Range: 3" to ...

Page 82 - Paper Specifications: ML421; Carbonless continuous forms

82 Microline 420/421 User’s Guide Paper Specifications: ML421 Single (Cut) Sheet Feed: Top Only Weight: 14 to 24 lb. US Bond (52.6 to 90 g/m 2 ) Width Range: 7.2" to 14.3" (182.8 to 363.2 mm) Single-part, continuous forms Feed: Rear, Bottom* Weight: 12 to 24 lb. US Bond (45 to 90 g/m 2 ) Wid...

Page 83 - Environmental Requirements; Temperature; Electrical Requirements; Note: Height dimensions do not include the acoustic cover.

Specifications 83 Environmental Requirements Temperature Operating: 41 to 95°F (5 to 36°C) Storage: 14 to 122°F (-10 to 50°C) Humidity Operating: 20 to 80% RH Storage: 5 to 95% RH Electrical Requirements • 120 volts ac, (+6%, -15%) 50 or 60 Hz (±2%)58 W Typical, 10 W idle • 230 ac, (+15%, -14 %) 50 ...

Page 84 - Appendix D: Installation; Location

84 Appendix D: Installation Location • Place your printer on a firm, solid surface. • Allow enough space around the printer to easily access the platen knob and the various paper feed paths. • Make sure a suitable grounded power outlet is available nearby. Unpack • If any items are missing, contact ...

Page 85 - Remove the printhead shipping restraint.

Installation 85 1 Remove any packing tape, then grasp the tabs (1) at either end of the access cover and pivot it toward the front of theprinter as far as it will go. 2 Remove the printhead shipping restraint. 3 Remove the shipping restraint from the pull-up roller assembly (1).

Page 86 - remove the shipping restraint.; Reinstall the sheet guide: insert the clips on either side of the

86 Microline 420/421 User’s Guide 4 Use the tabs (1) to lift and remove the sheet guide, then remove the shipping restraint. 5 Reinstall the sheet guide: insert the clips on either side of the separator into the notches marked with a triangle, then pressdown to secure the separator in place.

Page 87 - Unpack the new ribbon cartridge and install it on the; arrow to take up any ribbon slack.; Close the access cover and turn the printer on.; Install the Ribbon Cartridge; • Leave unused ribbon cartridges in their packages until

Installation 87 CAUTION! The printhead may be HOT! 3 Unpack the new ribbon cartridge and install it on the printhead. Important! Do not remove the ribbon shield (1) from the ribbon! 4 Turn the take-up knob (1) in the direction of the molded-in arrow to take up any ribbon slack. 5 Close the access co...

Page 88 - Power Connection; Make sure both the printer and the computer are OFF.; Plug the power cord into the back of the printer, then into a; Computer Connections; • Printer has 36-pin socket; Turn the printer and computer back on.

88 Microline 420/421 User’s Guide Power Connection 1 Make sure both the printer and the computer are OFF. 2 Plug the power cord into the back of the printer, then into a grounded outlet. 3 Turn on the printer. Computer Connections Parallel (LPT): IEEE 1284 • Requires bidirectional cable, max. length...

Page 89 - • Printer has USB “B” receptacle.; Attach a suitable USB cable to the printer. Then attach the; cable to your computer.; Turn the computer and printer back on.

Installation 89 USB: Specification 1.1 Compliant • Requires USB 1.1 cable, maximum length 19.7 ft. (5 m), not supplied. • Printer has USB “B” receptacle. 1 Make sure the printer and computer are both turned off. 2 Attach a suitable USB cable to the printer. Then attach the cable to your computer. 3 ...

Page 90 - Testing the Printer; • Font Sample Test; Font Sample Test; Make sure paper is loaded.; key while turning the printer back on.

90 Microline 420/421 User’s Guide Testing the Printer • Font Sample Test • Rolling ASCII Test • Hexadecimal Dump Mode Font Sample Test Important! Wide carriage Model ML421: If you are using 8.5" paper torun the tests, make sure the paper width selection in theprinter menu is set to 8.5 inches. O...

Page 91 - Rolling ASCII Test; Make sure continuous forms paper is loaded.; key while turning the printer

Installation 91 Rolling ASCII Test Important! Wide carriage Model ML421: If you are using 8.5" paper torun the tests, make sure the paper width selection in theprinter menu is set to 8.5 inches. Otherwise, printing on theplaten may damage the printer. See Chapter 4: Menu Modefor more information...

Page 92 - Hexadecimal Dump Mode; represented by a period.

92 Microline 420/421 User’s Guide Hexadecimal Dump Mode When the printer is placed in the Hexadecimal Dump Mode, alldata received, including text and printer commands, is printedin both hexadecimal and ASCII format. For example, the following line of BASIC code LPRINT CHR$ (27);”0”;CHR$ (30);”This i...

Page 93 - Loading the OKI Driver; Parallel Interface; Select your printer model.; USB Interface; Turn the printer on.; The Windows Add New Hardware Wizard window displays.; Follow the on-screen instructions to install the software for; Using a Compatible Driver; Note: See your software documentation for information on how

Installation 93 Loading the OKI Driver Parallel Interface 1 Insert the CD into your CD-ROM drive. Note: If the CD does not AutoPlay, click Start → Run → Browse, then browse to your CD-ROM drive,double-click Install.exe and click OK. 2 Select your printer model. 3 When the Menu Installer window appea...

Page 94 - Index

94 A Accessories ............................................. 68Alignment problems ................................. 9ASCII Test .............................................. 91Auto Carriage return ............................... 35Auto LF (Line Feed) ........................ 31, 35Auto Select ......