Every effort has been made to ensure that the information in this document is complete, accurate, and up-to-date. Oki Printing Solutions assumes no responsibility for the results of errors beyond its control. Oki Printing Solutions also cannot guarantee that changes in software and equipment made by other manufacturers and referred to in this guide will not affect the applicability of the information in it.
OTES CAUTIONS AND WARNINGS NOTE A note provides additional information to supplement the main text. A caution provides additional information which, if ignored, may result in equipment malfunction or damage. A warning provides additional information which, if ignored, may result in a risk of personal injury. CAUTION! WARNING! Notes, cautions and warnings >...
NTRODUCTION Congratulations on purchasing this Oki Printing Solutions printer! The ML6300FB 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, 24-pin, serial impact dot matrix printing technology with advanced materials and superior construction to provide high performance and versatility in a desktop sized unit.
> On-line Help: on-line information accessible from the printer driver and utility software. LINE USAGE This guide is intended to be read on screen using an Adobe Acrobat Reader. Use the navigation and viewing tools provided in Acrobat.
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.
Installation Safety booklet supplied with your printer. ETAINING PACKING MATERIALS After setting up your printer according to the instructions in the Set-up Guide, retain your packing materials and container in case you ever need to ship or transport your printer.
Page 10
Power Switch: to turn the printer power ON/OFF. Platen Knob: turn to move or eject the paper. Paper Tray: to hold cut sheet paper for use by the printer (one sheet at a time). Paper Guide: can be adjusted as required to locate the left edge of cut sheet paper.
USB connector: connect to USB interface cable. Parallel connector: connect to parallel interface connector. Pin Tractor: to load and feed continuous forms. Power connector: connect to printer power cable. Rear Cover: open and close for access, for example when loading continuous forms. (To remove completely, see “Appendix A –...
OCATING YOUR PRINTER > Select a firm, solid surface on which to site your printer. > Allow enough space around your printer (e.g. at least 60 cm from any wall) for easy access to the Platen Knob and the various paper feed paths.
OWERING ON YOUR PRINTER Ensure that your printer Power Switch is set to OFF. Connect the power cable connector (1) to the power connector (2) on the printer. Connect the power cable to a 220/240 V AC power outlet and switch on the outlet power.
RODUCING A TEST PRINT To check that your printer is operational, produce a test print on a sheet of 80 gsm A4 paper (for example) as follows: Allow at least 5 seconds between turning the printer ON after turning it OFF. A shorter time interval between turning ON/OFF operations may cause printer power failure.
ONNECTING TO A COMPUTER In this section you will interconnect your printer and computer, install the printer driver in your computer and print a test page. NTERCONNECTING PRINTER AND COMPUTER NTERFACES Your printer is equipped with two data interfaces: Do not use both parallel and USB printing together.
Turn ON the printer and then turn ON the computer. NSTALLING THE PRINTER DRIVER Insert the Drivers CD into your computer and follow the on- screen instructions to install the printer driver for use with your printer. RINTING A TEST PAGE As an example, using Windows XP: Use Start >...
RINTING FROM A COMPUTER When printing to your printer from, for example, a Windows application on your computer, make your printing selections from the driver windows that appear on screen. These driver windows have been designed to be easy to use and intuitive while supplementary on-line help is available by clicking each window Help button .
OADING CUT SHEET PAPER Ensure that the printer is turned ON. NOTE If there are any continuous forms in the printer, eject them as described in Ensure that the Pin Tractor covers (1) are closed to avoid the possibility of paper jams.
Page 19
With the printing side upwards and the left edge aligned with the Paper Guide (1), carefully insert the paper on the Paper Tray (2) into the printer until it is gripped. Paper handling > 19...
If required, add another sheet for the printer to continue printing from where it left off. To eject a cut sheet left in the printer, carry out the following: Press the SEL button to put the printer off-line.
EEDING CONTINUOUS FORMS Ensure that the printer is turned ON. NOTE If there is a cut sheet in the printer, eject it as described in “Ejecting cut sheet paper” on page Ensure the Paper Type Lever (1) is set to Continuous Forms.
Page 22
Lift the locking lever (1) of the left Pin Tractor and slide the Pin Tractor as required to adjust the paper position relative to the first horizontal character centre mark (2). Press the locking lever back down to lock the Pin Tractor in the desired position.
Page 23
Open the left and right Pin Tractor covers (1) and feed the continuous forms in the direction of the arrows, locating the sprocket holes (2) in the forms onto the sprocket pins. Ensure that the forms are properly aligned on the sprocket pins (3), then close the covers.
Press the FF/LOAD button. The continuous forms will be taken into the printer and positioned at the first line print position and the SEL indicator will illuminate. EARING OFF CONTINUOUS FORMS With the SEL indicator illuminated, press the TEAR button to eject the continuous forms onto the Paper Tray.
EMOVING CONTINUOUS FORMS Tear off the continuous forms. forms” on page 24. Press the SEL button to set the printer off-line and reposition the continuous forms in the printer. Press the PARK button to move the front edge of the continuous forms backwards to the Pin Tractors.
Open the Rear Cover by gently pulling it out horizontally to the end of its travel then swinging it upwards until it locks into position. Lift the Pin Tractor covers (1) and remove the forms. Close the Pin Tractor covers. Close the Rear Cover by gently swinging it downwards to the horizontal and then pushing it inwards until it locks into position.
Page 27
PAPER TYPE Set the Paper Thickness lever for overall paper thickness as follows: OVERALL PAPER THICKNESS 0.06 – 0.12 mm 0.13 – 0.21 mm 0.22 – 0.30 mm 0.31 – 0.39 mm 0.40 – 0.48 mm 0.49 – 0.57 mm 0.58 –...
PERATING INSTRUCTIONS ONTROL PANEL The status/alarm indicators and button switches on the control panel allow you to check printer status and control the printer. Operating instructions > 28...
QUIET Flashing POWER Flashing MEANING Printer is on-line i.e. is available to print Printer is off-line i.e. is not available to print When flashing together with the ALARM indicator, printing cannot be resumed at this stage. Turn the power OFF, verify that the carriage moves properly, then turn the power ON again.
Cut sheet manual mode Off-line Continuous Forms mode Operating instructions > 30 FUNCTION Sets the printer to off-line Sets the printer to on-line and disalarms the printer Used only in conjunction with one of the following buttons: SEL, LF, FF/LOAD, PARK, TEAR described below.
Page 31
Ineffective Saves the set paper start position (first line print position). Quieter print mode Each press of the button pair progresses the printer through Quieter print mode > High multipart print mode > Normal print mode Ineffective...
ETTING MENU VALUES The following information explains the printer settings and how you can change them. Printer items and their values are printed for reference. ONFIRMING CURRENT SETTINGS To print the current menu settings, use a cut sheet of A4 paper or continuous forms of width at least 254 mm.
To exit menu setting, press SHIFT and SEL together to save the new settings and exit menu setting mode. NOTE Switching the printer OFF does not save the new settings. ENU ITEMS AND SETTINGS In the menu settings tables below, factory default settings are shown emboldened.
Page 34
ITEM Proportional Spacing Style Size Character Set Language Set Zero Character Operating instructions > 34 FUNCTION Select whether to use proportional spacing or not. Select either font style. Select the character scale size. Select either ANK character code table. Select a language character set.
Page 35
ITEM Code Page Slashed Letter 0 Multi Pass Operating instructions > 35 FUNCTION Select a code page. Set whether to convert slashed 0 located at 9BH and 9DH in USA code page or not. Select the printing direction when double- height print data exists in a line.
Page 36
ITEM Rcv Buffer Print Suppress Effective Auto LF Auto CR *IBM PPR only SI Select Pitch (10CPI) *IBM PPR/AGM only SI Select Pitch (12CPI) *IBM PPR/AGM only Reset Inhibit Select Language Set *EPSON only Impact Mode Print Direction Command Power Save Time Operating instructions >...
Page 37
ITEM PE Detection Table Print Line Spacing Page Width Form Tear-Off Skip Over Perforation Page Length (Continuous) Operating instructions > 37 FUNCTION Select whether to detect paper end or not. Set whether to divide a path or not to print on occasions when printing by the same headpin continues for 3 in or...
Page 38
FUNCTION Select the reference position for the TOF position when auto loading continuous form paper from the rear of the printer. (Up to the mid-section of characters in the first line.) “1Chr. Set Pos.” is printed if the TOF position is set by using SHIFT + PARK switches.
Page 39
Operating instructions > 39 FUNCTION Select the waiting time between setting paper on the tray and feeding it while the printer is waiting for paper to be fed in cut-paper manual feed mode. Select whether to print or clear buffer contents upon initialisation by receiving I-PRIME.
ITEM Registration Low Registration Normal Registration High1 Registration High2 LF Revise (Cut Sheet) NITIALISING MENU SETTINGS To restore the menu settings to their initial values, carry out the steps below. NOTE The values adjusted by the Adjustment menus are not initialised by the following procedure.
In cut sheet manual feeding mode, press the FF/LOAD button and place the paper on the Paper Tray. After the paper has started to be taken into the printer, continue to press the FF/LOAD button and the paper is taken into the 6.35 mm (0.25 in) position.
SHIFT and PARK buttons for 3 seconds. NOTE Do not turn the Platen Knob or switch off the printer during the above procedure. UICK PRINTER SETTINGS RINTER IMPACT MODE When switched ON, the printer enters the impact mode selected in the menu.
Page 43
NOTE If the paper on top is so thick that duplication on the paper below it fails, use emphasis printing. In emphasis printing mode, printing is carried out twice. The print may become blurred if high density characters and graphics are printed using a new ribbon. In emphasis mode, ensure that the paper is flat to avoid possible printing errors.
ROUBLESHOOTING LEARING PAPER JAMS UT SHEET PAPER JAMMED IN PRINTER Do not carry out any operations inside the printer with the Power Switch set to ON. Set the Power Switch to OFF. Open the Top Cover. Set the Paper Thickness lever to the Replace Ribbon position (position 10).
Page 45
Move the Print Head away from the paper. Rotate the Platen Knob in the relevant direction and pull the cut sheet out from the front or rear of the printer. If a paper fragment remains inside the printer: use forceps to grip and extract it or...
Rotate the Platen Knob and remove the forms from the front or rear of the printer. If a form fragment remains inside the printer, place two or three forms in a stack on the Pin Tractors and turn the Platen Knob to push the fragment out of the printer.
ESPONDING TO ALARM CONDITIONS Use the following table for guidance on how to respond to indicated alarm conditions. INDICATOR ALARM Flashing Flashing Flashing Flashing Flashing ALARM MEANINGS AND ACTIONS Paper has run out. Add paper and press the SEL button. The Paper Type lever is wrongly set for the type of paper in use.
CAUSE The power cable is not properly connected. Power outlet problem or power outage. The printer driver is not installed properly. The printer has just stopped printing. There is no paper in the printer. Inrterface cable is disconnected.
Page 49
There is contamination on the carriage shaft. The Paper Thickness lever position does not match the paper. The printer is set to print at high speed. The ribbon has reached its end of life. The ribbon cartridge is not installed correctly.
Page 50
Troubleshooting > 50 ACTION Reselect print setup for the applications according to priority. Initialise the printer. Print in hex dump mode and verify the data content. Make corrections in the application. Reconnect the cable correctly.
Page 51
Reselect line spacing correctly in the application. This is not a failure. This is not a failure. Use the printer's built-in fonts when you print important documents or bills. Load sheets with their left edges against the paper guide.
Page 52
Paper distortion or jam. Several blank lines appear in the printout. CAUSE Sheets are not loaded to the end. The printer is in the continuous forms mode. Sheets are not loaded to the end, or they are not inserted straight. Paper with wrinkles, folds or other defects.
Page 53
The paper length selected in the application does not match the physical paper length. The printer is in continuous forms mode. The printer is in cut sheet mode. The cut sheet is not ejected. Troubleshooting > 53 ACTION Match the paper length...
Do not use any flammable solvents for cleaning the printer to avoid any risk of fire or electric shock. Clean the interior of the printer every 6 months or 300 hours of operation, whichever comes first. WARNING! CAUTION! WARNING! Cleaning your printer >...
Page 55
WHERE TO CLEAN The carriage (1) and the area around it The paper travel surface (2) When you clean the interior of the printer with a vacuum cleaner, do not attempt to clean any parts smaller than the suction nozzle.
When the printed image becomes faint or incomplete, replace the ribbon cartridge. HANGING A RIBBON CARTRIDGE Only use genuine Oki Original consumables to ensure the best quality and performance from your hardware. Non-Oki Original products may damage your printer’s performance and invalidate your warranty.
Page 57
Move the carriage (1) to the cutout (2) for ribbon replacement position. Hold the ribbon cartridge (1) with your fingers pressing on its ribbon guide (2) and slope it up and out to remove it from the carriage. Consumables and accessories > 57...
Page 58
Holding the ribbon cartridge (1) close to both ends, slope it up and out until it unlocks then remove it along the direction indicated by the arrows. Dispose of the cartridge in accordance with your local guidelines. Remove the new ribbon cartridge from its wrapping and note the position of the Ribbon Guide (1), Knob (2) and Pin (3).
Page 59
In the direction indicated by the arrows, insert the pins at both ends of the ribbon cartridge (1) into the U grooves (2) in the printer until the ribbon cartridge is fully locked. NOTE It may be easier to mount the ribbon cartridge in place if you align it with the topside of the grooves.
Page 60
Close the printer Top Cover. Set the Paper Thickness lever to match the paper being used. (See “Setting the Paper Thickness lever” on page 26.) Set the printer Power Switch to ON. Consumables and accessories > 60 CAUTION!
ONSUMABLE ORDER INFORMATION ITEM Ribbon cartridge (Black) CCESSORIES The following accessories are available for your printer: > RS-232C Serial Interface > OL7120e 100BASE-TX/10BASE-T Network Interface Installation instructions are supplied with the accessories. The Network Configuration Guide on the CD that accompanies the Network Interface card provides detailed configuration information for the OL7120e.
PECIFICATIONS ITEM Model No. Print method Print head Print direction Print speed High Speed Draft (HSD) Letter Quality (LQ) Utility Line Feed (LF) time Form Feed (FF) speed Paper feed control Duplication capability Feeding direction Feeding mode Continuous forms tape tail detection method Character sets SPECIFICATION...
Page 63
Paper width Paper length Single-part Weight Pressure-sensitive Weight Number of copies Thickness Multipart-carbon-lined or multipart-interleaf Weight Number of copies Thickness Original OKI cartridge ribbon Ink color Ribbon life Print head life Dimensions Weight Power rating Voltage Frequency Power consumption Operation...
Page 64
5°C – 40°C, 30% – 85% RH (Testing condition for print precision: 15°C – 30°C, 40% – 70%RH) -20°C – 60°C, 0% – 95% RH When the printer is stored, it should be in its original packaging, with no moisture formation. 200 h/month...
A – R PPENDIX If required, the Rear Cover can be removed and refitted as described below. When removing or refitting the Rear Cover, take care not to apply excessive force. EMOVAL Remove the Rear Cover in the direction shown: Appendix A –...
EFITTING Align the Rear Cover (1) with the protruding part of the printer Top Cover (2) and insert in the direction shown: Appendix A – Rear Cover removal > 66...