ANUFACTURER Oki Data Corporation, 4-11-22 Shibaura, Minato-ku, Tokyo 108-8551, Japan MPORTER TO THE AUTHORISED REPRESENTATIVE Oki Europe Limited Blays House Wick Road Egham Surrey, TW20 0HJ United Kingdom For all sales, support and general enquiries contact your local distributor. NVIRONMENTAL INFORMATION...
OTES CAUTIONS AND WARNINGS NOTE A note provides additional information to supplement the main text. CAUTION! A caution provides additional information which, if ignored, may result in equipment malfunction or damage. WARNING! A warning provides additional information which, if ignored, may result in a risk of personal injury.
NTRODUCTION Congratulations on purchasing this printer! This printer series is designed to provide highly reliable letter quality printing and high resolution graphics for the desktop/office printing environment. It combines state-of-the- art, 9-pin (ML5520ECO/ML5521ECO) and 24-pin (ML5590ECO/ML5591ECO), serial impact dot matrix printing technology with advanced materials and superior construction to provide high performance and versatility in a desktop sized unit.
RINTING PAGES The whole manual, individual pages, or sections may be printed. The procedure is: From the toolbar, select File, then Print (or press the Ctrl + P keys). Choose which pages you wish to print: All pages, (1), for the entire manual. Current page, (2), for the page at which you are looking.
ETTING STARTED OCATION > 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. NPACKING >...
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Remove the shipping restraint from the pull-up roller assembly (1). Use the tabs (1) to lift and remove the sheet guide, then remove the shipping restraint. Reinstall the sheet guide: insert the clips on either side of the separator into the notches marked with a triangle, then press down to secure the separator in place.
NSTALLING THE RIBBON CARTRIDGE CAUTION! Make sure you have the correct replacement ribbon for your printer. The wrong ribbon will not print when installed in your printer. IBBON CARTRIDGE HANDLING > Leave unused ribbon cartridges in their packages until needed. >...
Turn the take-up knob (1) in the direction of the moulded arrow to take up any ribbon slack. Close the access cover and turn the printer ON. OWERING ON YOUR PRINTER WARNING! Operations of this equipment are not warranted when the equipment is connected to UPS (Uninterruptible Power Supply) and/or inverter.
OWERING OFF YOUR PRINTER Turn the printer power switch to OFF. Switch off the outlet power (1a) and then unplug from the power outlet (1b). Unplug the power cable connector (2) from the printer (3). OMPUTER CONNECTIONS Your printer is equipped with two standard data interfaces. CAUTION! Under no circumstances attempt to use both the parallel and USB ports simultaneously.
> For connection to a PC running Windows 2000 or above. This port requires a shielded cable 5m long confirming to USB version 2.0. Make sure the printer and computer are both turned OFF. Attach a suitable USB cable to the printer. Then attach the cable to your computer. Turn the computer and printer back on.
OADING PAPER For instructions on loading paper, see “Loading paper” on page Testing the printer > Font Sample Test > Rolling ASCII Test > Hexadecimal Dump Mode Font sample test CAUTION! Wide carriage model: ML5521ECO/ML5591ECO: If you are using 8.5 inch paper to run the tests, make sure the paper width selection in the printer menu is set to 8.5 inches.
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Rolling ASCII test CAUTION! Wide carriage Model ML5521ECO/ML5591ECO: If you are using 8.5 inch paper to run the tests, make sure the paper width selection in the printer menu is set to 8.5 inches. Otherwise, printing on the platen may damage the printer. See “Menu mode”...
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Hexadecimal dump mode When the printer is placed in the Hexadecimal Dump Mode, all data received, including text and printer commands, is printed in both hexadecimal and ASCII format. For example, the following line of BASIC code LPRINT CHR$ (27);”0”;CHR$ (30);”THIS IS AN EXAMPLE OF A HEXADECIMAL DUMP.” would print like this: NOTE In the ASCII format, all non-printable characters are represented by a period.
DIPUS The OKI DIPUS utility allows you remote access to the printer settings using the available applications. You can access DIPUS from Start > All Programs > Okidata > OKI DIPUS.
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Status monitor The Status Monitor utility allows you to view your printers’ current status for example, On- line, On-line (power saving) and so on. In the event of a printer error occurring, a warning message is also displayed. TOF setup utility Using this utility you can now set the first line of print (TOF) for each page.
SING YOUR PRINTER OMPONENTS EAR FEED CONTINUOUS FORMS The serial number of your printer is on a label fixed to the back of the printer. 1. Sheet Guide 2. Paper Lever 3. ON-OFF Switch 4. Platen Knob 5. Control Panel 6.
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Loading rear feed paper from the back of the printer These instructions assume you have ready access to the back of the printer. If you do not, go to “Loading rear feed paper from the front of the printer” on page 25. Make sure the paper lever is forward (position marked “REAR”).
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Pivot the sheet guide forward and gently rest it against the roller assembly (2). If you push the sheet guide too hard against the roller assembly, it may dislodge it. If it does, be sure to reseat the roller assembly before continuing. From the back of the printer, locate the tractors (1).
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Open the tractor covers. Place continuous forms paper on the first two pins of either tractor. NOTE You must keep the number of paper holes engaged on either pin the same. If you don’t the paper will skew and jam. Close the right tractor cover.
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Adjust the left tractor until the holes in the paper are centered on the pins then lock the lever and close the left tractor cover. NOTE If the paper is too loose, or too tight, it can cause jams. Lower the sheet guide and slide it towards the front of the printer until the marks align.
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Loading rear feed paper from the front of the printer These instructions assume you do not have ready access to the back of the printer. If you do, go back to “Loading rear feed paper from the back of the printer” on page 21. 1.
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Grasp the tabs and lift off the sheet guide. Pull up on the lock levers to release them. NOTE The movement of the left tractor (as viewed from the front of the printer) is restricted to ensure that the paper covers the paper out sensor. Move the left tractor to the position to match your paper size and push back on the lever to lock it in place, then move the right tractor to fit the width of the paper.
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Open the tractor covers and place continuous forms paper on the first two pins of either tractor, then close the left tractor cover. 15 16 NOTE You must keep the number of paper holes engaged on either pin the same. If you don’t the paper will skew and jam.
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Reinstall the sheet feeder. Place the wire guide (1) in the sheet guide on the pull-up roller assembly. Using your printer > 28...
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 the page. To change the setting, see “Top of Form (TOF)” in the previous chapter. OP FEED SINGLE SHEETS If you have continuous form paper in the path, press PARK to remove it before loading single sheets.
Adjust the paper feed guides (1) for the width of the paper, then place a sheet of paper in the separator. The paper will feed into the printer. NOTE > If the paper does not feed in, remove it. Check the paper lever position. Make sure the ALARM light is ON: if it is flashing, hold the SHIFT key and press the CHARACTER PITCH/RESET key.
NOTE > Your software may print the first line of print above or below where TOF is set. You may need to adjust the TOF to meet your software’s requirements. > The Top of Form and Forms Tear-Off settings of your printer interact. How you set the Top of Form depends on whether Forms Tear-Off is ON (set to 500 ms, 1 sec, or 2 sec) or OFF (the factory default setting).
(TOF) ETTING TOP OF FORM CAUTION! If you turn the platen knob when the printer is not at Top of Form, the TOF will misalign. Always feed the paper to TOF before turning the platen knob. The first line prints at the red line of the plastic paper shield on the printhead. Forms Tear-off set to OFF - default With paper loaded and the printer ON and selected: Press PARK (6) to park the paper.
If the printer is ON line, press SEL|MENU (1) to take the printer Offline. The SEL light goes out. Press and Hold SHIFT, then: > Press LF|Micro Feed Down (3) to set the TOF higher (the paper moves down). > Press FF/LOAD|Micro Feed Up (4) to set the TOF lower (the paper moves up).
When printing stops, Forms Tear-Off automatically moves the paper to align the perforation with the tear bar (located under the access cover), after the time interval which you selected through the menu. Paper remains in the tear-off position until the printer receives more data. Then, the paper moves back down for printing.
ANUAL FORMS TEAR If you don’t wish to engage the Forms Tear-Off feature, you can advance: > rear-feed continuous forms loaded on the built-in tractor > bottom-feed continuous forms loaded on the optional push tractor up to the tear-off position manually, by pressing TEAR (5). APER PARK CAUTION! Never park labels.
Move the paper lever (1) to the middle position marked “TOP.” Adjust the paper guides (1) for the size of paper you are using, then place a sheet of paper in the sheet guide. INGLE SHEETS TO CONTINUOUS FORMS Press FF/LOAD to remove the single sheet paper. Lower the sheet guide into the continuous forms position.
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Move the paper lever to the appropriate position. > Rear feed: > Bottom feed: > If necessary, load continuous form paper. Press FF/LOAD. Using your printer > 37...
RINTHEAD GAP The printhead gap is the distance between the printhead and the platen. CAUTION! Make sure the printer is turned OFF before you open the access cover. To adjust the gap, open the access cover and move the coloured lever (1) to the recommended setting from the table.
RINTER RESET Clearing some error conditions requires that you reset (reinitialise) the printer. To do this: Press and release SEL (1) to take the printer off line. The SEL light goes out. Press and hold SHIFT (2), then press the RESET/CHARACTER PITCH key (5). NOTE Pressing SHIFT and RESET reinitialises the printer, but does not affect any menu settings and does not reset the printer to the factory defaults.
ENU MODE In Menu Mode, use the front panel keys to change the defaults for the printer parameters. The changes made in the Menu Mode are automatically saved when you exit the Menu Mode and are retained, even when the printer is turned off. NOTE Please print the current Menu Mode settings before you reset or change them.
RINTING ALL MENU SETTINGS To print out a listing of the settings for all menu items, regardless of the emulation selected or the accessories installed: Make sure paper is loaded in the printer. Press and hold SHIFT, then press SEL to enter the Menu Mode. Press and hold SHIFT, then press PRINT QUALITY.
ENU SETTINGS The table following shows the items which may appear in the menu. Settings which are engaged at the factory (defaults) are set in bold. Some groups or entries will only appear when a specific emulation is engaged, as noted. GROUP ITEM FUNCTION...
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GROUP ITEM FUNCTION SETS ML5520ECO/ ML5590ECO/ ML5521ECO ML5591ECO Symbol Character Set Select character code Set I Set I Sets table. Set II (Epson and Set II IBM mode) Standard (ML mode only) Line Graphics (ML mode only) Block Graphics (ML mode only) Language Set Select a language...
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GROUP ITEM FUNCTION SETS ML5520ECO/ ML5590ECO/ ML5521ECO ML5591ECO Symbol Code Page Select a code page. Sets cont. Canada French Canada French Multilingual Multilingual Portugal Portugal Norway Norway Turkey Turkey Greek_437 Greek_437 Greek_869 Greek_869 Greek_928 Greek_928 Greek_437 CYPRUS Greek_437 CYPRUS Polska Mazovia Polska Mazovia Serbo Croatic I Serbo Croatic I...
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GROUP ITEM FUNCTION SETS ML5520ECO/ ML5590ECO/ ML5521ECO ML5591ECO Rear Feed Line Spacing Select line feed pitch. 6 LPI Change to 8 lines per 8 LPI inch (lpi) to get more lines per page. Form Tear-Off When printer is idle (0.5, 1.0 or 2.0 sec), paper is 0.5 sec advanced from the...
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GROUP ITEM FUNCTION SETS ML5520ECO/ ML5590ECO/ ML5521ECO ML5591ECO Bottom Line Spacing Select line feed pitch. 6 LPI Feed 8 LPI Form Tear-Off When printer is idle (0.5, 1.0 or 2.0 sec), paper is 0.5 sec advanced from the 1.0 sec current print position to 2.0 sec the tear position.
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GROUP ITEM FUNCTION SETS ML5520ECO/ ML5590ECO/ ML5521ECO ML5591ECO Top Feed Line Spacing Select line feed pitch. 6 LPI 8 LPI Form Tear-Off When printer is idle (0.5, (Displayed when 1.0 or 2.0 sec), paper is 0.5 sec IBM emulation is advanced from the 1.0 sec selected.)
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GROUP ITEM FUNCTION SETS ML5520ECO/ ML5590ECO/ ML5521ECO ML5591ECO Set-up Graphics Select the printing Uni-directional direction when double- Bi-directional height print data exists in a line. 7 or 8 Bits Select to change Graphics graphics settings. (Displayed only for ML Emulation) Receive Buffer Select size of the 1 Line...
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GROUP ITEM FUNCTION SETS ML5520ECO/ ML5590ECO/ ML5521ECO ML5591ECO Set-up Auto LF Select whether to cont. perform auto LF operation or not upon receiving a CR code. If your print out is consistently double spaced, select No, if it overprints, select Yes. Auto CR Select Yes to add a (Displayed only for...
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GROUP ITEM FUNCTION SETS ML5520ECO/ ML5590ECO/ ML5521ECO ML5591ECO Set-up Centering Position Used to limit printhead DEFAULT cont. travel when printing Mode 1 narrow columns. Select Mode 2 Mode 1 for the narrow carriage printer. Select Mode 1 or Mode 2 for the wide carriage printer.
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GROUP ITEM FUNCTION SETS ML5520ECO/ ML5590ECO/ ML5521ECO ML5591ECO Parallel I-prime Select whether to print Invalid or clear buffer contents Buffer Print upon initialisation by Buffer Clear receiving I-PRIME. Auto Feed XT If your system uses pin Valid (Displayed only for 14 of the parallel Invalid EPSON emulation)
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GROUP ITEM FUNCTION SETS ML5520ECO/ ML5590ECO/ ML5521ECO ML5591ECO CSF Bin 1 Line Spacing Select line feed pitch 6 LPI 8 LPI (Display- ed when Bottom Margin Change to Invalid if you Valid Single-bin want the printer to Invalid Cut-sheet ignore the bottom feeder is margin setting.
AINTENANCE EPLACING THE RIBBON CARTRIDGE Make sure you have the correct replacement ribbon for your printer. The wrong ribbon will not print when installed in your printer. Look for the printer model number on the ribbon package. IBBON CARTRIDGE HANDLING >...
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Unpack the new ribbon cartridge and install it. Do not remove the ribbon shield (1) from the ribbon! Turn the take-up knob (1) in the direction of the arrow to take up any ribbon slack. Close the access cover and turn the printer back on. CAUTION! >...
LEANING YOUR PRINTER To keep your printer in good operating condition, you are advised to clean it regularly. WARNING! Set the printer Power Switch to OFF and disconnect the power cable from the printer before cleaning the printer. RINTER EXTERIOR CAUTION! Keep the access cover closed to avoid the possibility of detergent entering the printer.
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Open the access cover (1) and remove the pull-up roller assembly (2). Use a clean, dry cloth to dust around the carriage shaft and platen. Remove any loose bits of paper. CAUTION! > When you clean the interior of the printer with a vacuum cleaner, do not attempt to clean any parts smaller than the suction nozzle.
ROUBLESHOOTING LEARING PAPER JAMS EAR FEED JAMS Turn off the printer. 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 access cover. Open the access cover (1) and remove the pull-up roller assembly (2).
Lower the sheet guide, then install the pull-up roller assembly and close the access cover. Turn ON the printer and press FF/LOAD. EAR FEED REPEATING PAPER JAMS If the paper keeps jamming, you may have: > defective paper > misaligned paper >...
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Open the access cover (1) and remove the pull-up roller assembly (2). Then grasp the tabs (3) on the sheet guide (4) and lift it off the printer. Remove any torn pieces of paper. Fold some continuous form paper over three times to make a page four sheets thick. Then, load it on the tractors and close and lock the covers.
Install the sheet guide, then install the pull-up roller assembly and close the access cover. Turn the printer on and press FF/LOAD. INGLE SHEET PAPER JAMS Turn off the printer. Use the platen knob to back the paper out. Open the access cover (1) and remove the pull-up roller assembly (2). Remove any torn pieces from around the carriage.
Does the paper being used meet the specifications for this product? > Is the paper properly installed? > Is the ribbon properly installed? > Is an Oki ribbon being used? > Is the printhead gap correctly set? > Are the correct printer drivers being used for the printer? NOTE >...
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PROBLEM SOLUTION Ink smears on the paper This may be caused by excessive printhead travel from the when I print narrow centering position. Enter the Menu and set the Centering Position columns. to MODE 1. See “Using Your Printer, Menu Mode.” For the wide-carriage printer, if MODE 1 doesn't work, try setting the Centering Position to MODE 2.
ARTS AND ACCESSORIES Purchasing Parts & Accessories Before you purchase parts and accessories, make a note of your printer model number (see the front of the unit) and have the correct part number and description of the item you wish to purchase.
PECIFICATIONS MODEL MODEL NUMBER ML5520ECO D22900B ML5521ECO D22910B ML5590ECO D22920B ML5591ECO D22930B ITEM SPECIFICATION Print Method Impact dot matrix Printhead ML5520ECO/ML5521ECO 9 pins, 0.30 mm diameter, thermal protection ML5590ECO/ML5591ECO 24 pins, 0.20 mm diameter, thermal protection Dimensions (W x D x H) (Without platen knob, acoustic cover and paper separator) ML5520ECO/ML5590ECO...
NDEX Centering printhead position Testing the printer . 63 Clearing paper jams font sample test ....15 rear feed hexadecimal dump mode ......58 . 17 single sheets rolling ASCII test ..... 61 ....16 Computer Connections Top of Form ..
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