Page 2 - Energy Star
Every effort has been made to ensure that the information inthis document is complete, accurate, and up-to-date. Okiassumes no responsibility for the results of errors beyond itscontrol. Oki also cannot guarantee that changes in softwareand equipment made by other manufacturers and referred toin thi...
Page 3 - Help Guide; English; Safety
i Help Guide English • The printhead can get quite hot when it has been printing fora length of time. Do not touch the printhead until it has had achance to cool off. • Do not use your printer near water, or spill liquid of any kindinto it. • Be certain that your power source matches the rating list...
Page 4 - ii; The power cable or plug is frayed or damaged.
English ii ML3320/21 rating. Generally, the total ratings of all equipment pluggedinto any one power line should not exceed 13 amperes. Donot exceed this unless you know that the power line yourequipment is plugged into has a rating above 13 amperes. • Do not poke anything into the ventilation slots...
Page 5 - Contents
iii Help Guide English Contents Safety .................................................................................. i Maintenance ....................................................................... 1 Replacing the Ribbon Cartridge ........................................ 1 Clearing Paper J...
Page 6 - iv
English iv ML3320/21 3390hlp2.pm6 22/03/96, 16:04 4
Page 7 - Maintenance; Replacing the Ribbon Cartridge; Remove and discard the used ribbon cartridge.
Help Guide 1 English Maintenance Replacing the Ribbon Cartridge Note: For the best results, use genuine Oki ribbons. 1. Make sure the printer is turned OFF. 2. Centre the printhead ( ➊ ). Caution! The printhead may be HOT! 4. Unpack the new ribbon cartridge. ➊ 3. Remove and discard the used ribbon c...
Page 8 - ) in the direction of the arrow to take up; Clearing Paper Jams; Turn the printer OFF and use the platen knob to back the
2 ML3390/91 5. Install the new ribbon cartridge. 6. Turn the knob ( ➊ ) in the direction of the arrow to take up any ribbon slack. Clearing Paper Jams Rear-Feed Jams 1. Turn the printer OFF and use the platen knob to back the paper all the way out. 2. Open the access cover, and remove the pull-up ro...
Page 9 - M N
Help Guide 3 English 6. Turn the printer on. 7. Press FF/LOAD. 3. Remove any torn pieces of paper. 4. Replace the pull-up roller assembly, and close the access cover. 5. Reload paper. FF/LOAD M N ITEM Micro Feed Up 3390hlp3.pm6 22/03/96, 16:05 3
Page 10 - Correcting Repetitive Rear-Feed Jams; Fold some continuous-form paper over three times to
4 ML3390/91 QUIET PARK TEAR FF/LOAD LF SEL SEL POWER ALARM MENU GROUP EXIT ITEM SET PRINT MENU SHIFT TOF Micro Feed Up Micro Feed Down PRINT QUALITY CHARACTER PITCH HSD NLQ UTL SSD 10 12 15 17 20 PROP Correcting Repetitive Rear-Feed Jams If the paper keeps jamming, you probably have bits of paperstu...
Page 11 - Remove the paper pieces, and use the platen knob to back
Help Guide 5 English 5. Remove the paper pieces, and use the platen knob to back the paper out. 6. Swing the paper separator over, reload regular paper, and lower the paper separator back into place. 7. Replace the pull-up roller assembly, and close the access cover. 8. Turn the printer on. 9. Press...
Page 13 - Cleaning the Housing; Note: Never use solvents or strong detergents on the
Help Guide 7 English Cleaning the Housing You should clean the printer every six months (or after about300 hours of operation). Note: Never use solvents or strong detergents on the cabinet: they could damage the housing. 1. Turn the printer off, and remove any paper from the path. 2. Open the access...
Page 14 - Troubleshooting; Nothing happens when I turn on the printer.
8 ML3390/91 Troubleshooting Problem: Nothing happens when I turn on the printer. Solution: Check the power cable connection the outlet andto your printer. If you are using a power strip,make sure it is turned on, and that the fuse hasnot blown nor the circuit breaker tripped. Problem: The printer do...
Page 15 - The ALARM light is blinking.
Help Guide 9 English Problem: My word processor files don't print the way Ihave the menu and front panel set. Solution: Before sending a file to the printer, many wordprocessors send either an “initialization string”or an I-Prime signal to the printer. The initialization string contains codes thatov...
Page 17 - Using Your Printer; Print Mode: Indicator Lights; out of paper if no other lights are blinking
Help Guide 11 English Using Your Printer Print Mode: Indicator Lights ➎ ALARM ... Glows = error condition exists: ➤ out of paper if no other lights are blinking ➤ paper jam if 15 cpi light is also blinking ➤ paper lever is set to wrong position if 10 cpilight is also blinking. Blinks = error conditi...
Page 18 - Print Mode: Control Panel Keys; engages the Menu Mode.
12 ML3390/91 Print Mode: Control Panel Keys ➎ PRINT QUALITY ........... Selects the print quality and font. ➏ FF/LOAD ......................... Loads/ejects single sheet of paper; moves continuous-form paper toprint position. ➐ TEAR ................................ Moves continuous-form paper up for...
Page 19 - Selecting the Print Quality and Font; Important! Front panel settings for print quality and; Courier: LQ and Courier lights on
Help Guide 13 English Selecting the Print Quality and Font Important! Front panel settings for print quality and character pitch can be overridden by softwarecommands. The lights will always reflect theprinter's state. Press PRINT QUALITY to select: LQ: Letter Quality • Highest quality, slowest spee...
Page 21 - Entering and Exiting the Menu Mode; To reset the Menu to the standard settings:; Printing the Menu Settings; Make sure paper is loaded in the printer.; Changing the Menu Settings; Use the GROUP, ITEM and SET keys to make your; Important! If you turn the printer off without first exiting
Help Guide 15 English Entering and Exiting the Menu Mode To enter or exit the Menu Mode, hold SHIFT while pressingSEL. Resetting the Menu To reset the Menu to the standard settings: 1. Turn the printer off. 2. Press SEL + LF while turning the printer on. Printing the Menu Settings 1. Make sure paper...
Page 22 - Summary of Menu Settings
16 ML3390/91 Summary of Menu Settings 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 groups or entries will only appear when a specific emulation is engaged, as noted. Group Item Setting Printer Control E...
Page 25 - Explanations of Menu Items; Character Set. Choose IBM Set I or IBM Set II.
Help Guide 19 English Explanations of Menu Items Auto CR (IBM). If you want the printer to automatically adda carriage return when a Line Feed is received at the end of aline, change the setting to Yes. Auto LF. If your printout is consistently double spaced, selectNo; if it overprints, select Yes. ...
Page 27 - Using the Printer's Features; Tear Feature; TEAR; Note: The Tear Feature can not be used when the optional; Forms Tear-Off Feature; Important! Never engage Forms Tear-Off when printing
Help Guide 21 English Skip Over Perforation. Change to Yes if you want the printerto go to the next page when it comes within 1" (25 mm) ofthe bottom of the page. Keep it set to No if your software hasits own page formatting controls. Slashed Letter O. If set to Yes, capital and lower case slash...
Page 28 - Note: Some programs pause occasionally while sending; Paper Park Feature; REAR FEED
22 ML3390/91 This feature is normally turned off. To activate it: Note: Some programs pause occasionally while sending data. If the pause is too long, the paper will advanceto the tear-off position until more data is received.This extra paper movement can cause uneven printregistration in graphics. ...
Page 29 - Specifications; Impact dot matrix
Help Guide 23 English Specifications Print Method Impact dot matrix Printhead 24 pins, 0.20 mm diameter, thermal protection Print Speed Characters per Line (CPL) Setting ML 3390 ML 3391 10 cpi 80 cpl 136 cpl 12 cpi 96 cpl 163 cpl 15 cpi 120 cpl 204 cpl 17.1 cpi 137 cpl 233 cpl 20 cpi 160 cpl 272 cpl...
Page 30 - Resident Fonts; Size; Print Modes; Mode; Bar Codes
24 ML3390/91 Resident Fonts Mode/Font Size LQ Courier 10 cpi, 12 cpi, Superscript/subscript LQ Roman 10 cpi, 12 cpi, Superscript/subscript LQ Swiss 10 cpi, 12 cpi, Superscript/subscript LQ Prestige 10, cpi, 12 cpi LQ Orator 10, cpi, 12 cpi LQ Letter Gothic 10 cpi, 12 cpi LQ Swiss Bold 10, cpi, 12 cp...
Page 31 - Reliability; Parameter; Paper Width; Paper Type Feed
Help Guide 25 English Reliability Parameter Reliability Mean Time Between Failures 10,000 hours at 25% duty (MTBF) cycle and 35% page density Mean Time to Repair 15 minutes (MTTR) Printhead Life 200 million charactersaverage in 10 cpi draft modeat 25% duty and 35% pagedensity Ribbon Life (on average...
Page 32 - Weight; Electrical Requirements
26 ML3390/91 Paper Specifications (continued) Paper Type Feed Weight Width Range* Envelopes, Top Only 90 g/m² max. 165.1 - 241.3mm single feed (24 lb.) (6.5" to 9.5") Envelopes, Bottom 90 g/m² max. 165.1 - 241.3mm continuous feed, Only (24 lb.) (6.5" to 9.5") non-overlap Card stock B...
Page 33 - Index
Help Guide 27 English Index Continuous-form paper jams, clearing .............. 2-5specifications ................ 24 Control panel ................ 11-14Cut sheet specifications .... 25 D Defaults, menu ........... 116-18 resetting ........................ 15 Decollator menu setting ..................
Page 35 - Oki Systems Company
Help Guide 29 English Oki Systems Company Oki Systems (UK) Limited550 Dundee RoadSlough Trading EstateSloughBerks. SL1 4LE Tel: 01753-819819Fax: 01753-819899 3390hlp3.pm6 22/03/96, 16:05 29
