Users Guide
Page 3
... Printer Features 5 Oki Data on the Internet 5 Parts Identification: Front View 6 Parts Identification: Rear View 7 Parts Identification: Inside View 7 The Control Panel 8 Print Mode Key Functions 12 Chapter 2: Paper Handling 14 Loading Continuous Forms Paper 15 Rear Feed 16 Front Feed 19 Bottom Feed (optional pull tractor 21 Tearing Off Continuous Forms Paper 22 Aligning the Tear-Off Perforations 22 Removing Continuous Forms Paper 23 Loading Cut Sheet Paper 23 Cut Sheet Paper, Top and Front Feed 23 Ejecting Cut Sheet Paper 25 Notes on Different Types of Paper 26 Top of Form...
... Printer Features 5 Oki Data on the Internet 5 Parts Identification: Front View 6 Parts Identification: Rear View 7 Parts Identification: Inside View 7 The Control Panel 8 Print Mode Key Functions 12 Chapter 2: Paper Handling 14 Loading Continuous Forms Paper 15 Rear Feed 16 Front Feed 19 Bottom Feed (optional pull tractor 21 Tearing Off Continuous Forms Paper 22 Aligning the Tear-Off Perforations 22 Removing Continuous Forms Paper 23 Loading Cut Sheet Paper 23 Cut Sheet Paper, Top and Front Feed 23 Ejecting Cut Sheet Paper 25 Notes on Different Types of Paper 26 Top of Form...
Users Guide
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... Cut Sheet Paper Jams 75 Cleaning the Printer 77 Printer Exterior 77 Printer Interior 77 Testing the Printer 78 Font Sample Test 78 Rolling ASCII Test 79 Hexadecimal Dump Mode 80 Chapter 6: Troubleshooting 81 General Information 81 Responding to Alarm Conditions 82 Problems / Solutions 83 Appendix A: Parts & Accessories 89 Purchasing Parts & Accessories 89 Consumables 90 Accessories 90 Appendix B: Printer Control Codes 91 IBM Proprinter Commands 91 Epson FX Commands 94 Appendix C: Specifications 96 Print Method 96 Printhead 96 Interfaces...
... Cut Sheet Paper Jams 75 Cleaning the Printer 77 Printer Exterior 77 Printer Interior 77 Testing the Printer 78 Font Sample Test 78 Rolling ASCII Test 79 Hexadecimal Dump Mode 80 Chapter 6: Troubleshooting 81 General Information 81 Responding to Alarm Conditions 82 Problems / Solutions 83 Appendix A: Parts & Accessories 89 Purchasing Parts & Accessories 89 Consumables 90 Accessories 90 Appendix B: Printer Control Codes 91 IBM Proprinter Commands 91 Epson FX Commands 94 Appendix C: Specifications 96 Print Method 96 Printhead 96 Interfaces...
Users Guide
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...; my.okidata.com ML690/ML691 User's Guide You may reach Oki Data via Oki Data's Web Sites. On-line documents are available for viewing and downloading via the Internet at 25% duty cycle and 35% page density Advanced paper handling, with built-in rear push tractor and zero‑tear forms capability. Blazing print speeds, in characters per second: High Speed Draft (HSD) Mode: 480...
...; my.okidata.com ML690/ML691 User's Guide You may reach Oki Data via Oki Data's Web Sites. On-line documents are available for viewing and downloading via the Internet at 25% duty cycle and 35% page density Advanced paper handling, with built-in rear push tractor and zero‑tear forms capability. Blazing print speeds, in characters per second: High Speed Draft (HSD) Mode: 480...
Users Guide
Page 16
Make sure the printer is in the paper path, remove it before installing rear feed paper. 1 Lock Lever 2 Upper Tractor Cover 3 Pins Note: These instructions assume you do not, skip down to suit the paper. Open the access cover (1) and set the Paper Thickness lever to "Front Feed." 1. If you have any paper in the REAR feed position: 2 1 . Make sure the Paper Type lever is turned ON. . Close the cover. 1 3 ML690/ML691 User's Guide 16 Rear Feed Note: If you have ready access to the back of the printer.
Make sure the printer is in the paper path, remove it before installing rear feed paper. 1 Lock Lever 2 Upper Tractor Cover 3 Pins Note: These instructions assume you do not, skip down to suit the paper. Open the access cover (1) and set the Paper Thickness lever to "Front Feed." 1. If you have any paper in the REAR feed position: 2 1 . Make sure the Paper Type lever is turned ON. . Close the cover. 1 3 ML690/ML691 User's Guide 16 Rear Feed Note: If you have ready access to the back of the printer.
Users Guide
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... pulled ML690/ML691 User's Guide 21 Make sure that paper is fed straight into the printer to be used. Note: The factory default setting for the Top of the printer. . NOTE: Make sure that the forms are held neither too loosely nor too tightly between the left Pin Tractor and slide the Pin Tractor as required to midway between the Pin Tractors. Lift the locking lever of Form (TOF)". Move the paper guide to adjust the paper position...
... pulled ML690/ML691 User's Guide 21 Make sure that paper is fed straight into the printer to be used. Note: The factory default setting for the Top of the printer. . NOTE: Make sure that the forms are held neither too loosely nor too tightly between the left Pin Tractor and slide the Pin Tractor as required to midway between the Pin Tractors. Lift the locking lever of Form (TOF)". Move the paper guide to adjust the paper position...
Users Guide
Page 22
... first line print position. When data is received by the printer or when the SEL key is pressed to select the printer, the continuous forms is repositioned to the tear-off position using the 1/180" line feeds (LF). - Adjust to the tractor. QVMM@USBDUPSDPWFSDMPTF" 1. Press the LF/FF key to feed paper to the desired tear-off position. . NOTE: If the TOF position shifts because of the tear-off perforations are not aligned...
... first line print position. When data is received by the printer or when the SEL key is pressed to select the printer, the continuous forms is repositioned to the tear-off position using the 1/180" line feeds (LF). - Adjust to the tractor. QVMM@USBDUPSDPWFSDMPTF" 1. Press the LF/FF key to feed paper to the desired tear-off position. . NOTE: If the TOF position shifts because of the tear-off perforations are not aligned...
Users Guide
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.... To load the cut sheet in the cut sheet position: . To load the cut sheet paper, top feed and front feed. Cut Sheet Paper, Top and Front Feed 1. When data is received by the printer or when the SEL key is turned ON. See the following pages for instruction. Make sure the printer is pressed to select the printer, the paper will retract to avoid the possibility of cut sheet in "Removing Continuous Forms Paper". . Tear off perforations have been aligned with the paper cutter...
.... To load the cut sheet in the cut sheet position: . To load the cut sheet paper, top feed and front feed. Cut Sheet Paper, Top and Front Feed 1. When data is received by the printer or when the SEL key is turned ON. See the following pages for instruction. Make sure the printer is pressed to select the printer, the paper will retract to avoid the possibility of cut sheet in "Removing Continuous Forms Paper". . Tear off perforations have been aligned with the paper cutter...
Users Guide
Page 26
... the paper feed roller or from rubbing. ML690/ML691 User's Guide 26 Notes on Different Types of Paper Narrow paper: When printing on individual sheets. never from the FRONT - if the adhesive is not strong enough labels can cause ink to "Mode1". Failure to change the Centering position (see the Menu Settings Table in paper jams. Envelopes: When printing envelopes be sure to adjust the Paper Thickness...
... the paper feed roller or from rubbing. ML690/ML691 User's Guide 26 Notes on Different Types of Paper Narrow paper: When printing on individual sheets. never from the FRONT - if the adhesive is not strong enough labels can cause ink to "Mode1". Failure to change the Centering position (see the Menu Settings Table in paper jams. Envelopes: When printing envelopes be sure to adjust the Paper Thickness...
Users Guide
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... line of your software's requirements. Note: The factory default setting for the printer. ML690/ML691 User's Guide 27 It is ON (set . Top of Form depends on , the Top of form. Top of an inch. Always shut the printer off before turning the platen knob. The first line prints at the default top of Form misaligns. If you set the Top of Form (TOF) and Forms Tear-Off Note: Your software may need to adjust the TOF...
... line of your software's requirements. Note: The factory default setting for the printer. ML690/ML691 User's Guide 27 It is ON (set . Top of Form depends on , the Top of form. Top of an inch. Always shut the printer off before turning the platen knob. The first line prints at the default top of Form misaligns. If you set the Top of Form (TOF) and Forms Tear-Off Note: Your software may need to adjust the TOF...
Users Guide
Page 47
... select a time; If your software has its original printing position. when printer is idle for ML691) Function Settings (defaults are set the printer to go to the next page when it is advanced from the current print position to its own page formatting controls, leave the default setting. MENU SETTINGS TABLE Group Rear Feed (Push) Item Form Tear-Off 5 (cont.) Skip Over Perforation Page Width 4 (only displayed for .5, 1 or 2 seconds, paper is given priority. When data...
... select a time; If your software has its original printing position. when printer is idle for ML691) Function Settings (defaults are set the printer to go to the next page when it is advanced from the current print position to its own page formatting controls, leave the default setting. MENU SETTINGS TABLE Group Rear Feed (Push) Item Form Tear-Off 5 (cont.) Skip Over Perforation Page Width 4 (only displayed for .5, 1 or 2 seconds, paper is given priority. When data...
Users Guide
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.... Select Mode 1 for the ML691. Select Mode 1 or Mode 2 for ML690. Change to 8 lines per inch (lpi) to limit printhead travel when printing narrow columns. Specify manual form paper advancement or select a time; MENU SETTINGS TABLE Group Item Pull Page Length (cont.) LF Revise (Continuous Paper Line Feed Adjust) Centering Position Cut Sheet Top Feed Line Spacing Form Tear-Off 5, 6 (Displayed when connected to the specified amount. When data is received, paper is advanced from the current print position to its original printing position. For continuous feed, adjusts the line...
.... Select Mode 1 for the ML691. Select Mode 1 or Mode 2 for ML690. Change to 8 lines per inch (lpi) to limit printhead travel when printing narrow columns. Specify manual form paper advancement or select a time; MENU SETTINGS TABLE Group Item Pull Page Length (cont.) LF Revise (Continuous Paper Line Feed Adjust) Centering Position Cut Sheet Top Feed Line Spacing Form Tear-Off 5, 6 (Displayed when connected to the specified amount. When data is received, paper is advanced from the current print position to its original printing position. For continuous feed, adjusts the line...
Users Guide
Page 61
... data while it feeds to the printer, change the setting to Invalid to keep the default setting of time before the interface switches to idle status when no printing commands have been received. If you always use the same Top of Form position, keep your printer will be selected after you can set to "No", the printer will automatically be deselected so that you load in bold italic) Valid, Invalid No, Yes Auto Interface, Parallel, USB...
... data while it feeds to the printer, change the setting to Invalid to keep the default setting of time before the interface switches to idle status when no printing commands have been received. If you always use the same Top of Form position, keep your printer will be selected after you can set to "No", the printer will automatically be deselected so that you load in bold italic) Valid, Invalid No, Yes Auto Interface, Parallel, USB...
Users Guide
Page 67
... TOF position of the paper you are set in 1/180" increments. Selects the length of a cut sheet paper. MENU SETTINGS TABLE Group Item CSF (Cut Sheet Feeder) Bin 1 (Appears only when the optional Cut Sheet Feeder is installed.) Line Spacing Page Width 4 (only displayed for the -30 ~ -1, 0, +1 ~ +30 reference position in regard to the top edge of the page (-) in bold italic) Change to 8 lines per inch (lpi) to print on a page. ML690/ML691 User's Guide 67 Change...
... TOF position of the paper you are set in 1/180" increments. Selects the length of a cut sheet paper. MENU SETTINGS TABLE Group Item CSF (Cut Sheet Feeder) Bin 1 (Appears only when the optional Cut Sheet Feeder is installed.) Line Spacing Page Width 4 (only displayed for the -30 ~ -1, 0, +1 ~ +30 reference position in regard to the top edge of the page (-) in bold italic) Change to 8 lines per inch (lpi) to print on a page. ML690/ML691 User's Guide 67 Change...
Users Guide
Page 69
... reversed feed back to the tear bar position. MENU SETTINGS TABLE Group Item Extension Right Margin (Cut Sheet) (cont.) Function If the printer data exceeds the width of the paper. Table Footnotes: 1 Selects both double-width and double-height character or single-width and single-height characters. 2 When "1 line" ID selected, the receiving buffer size is idle for EPSON emulation. Settings (defaults are set to 8K bytes. 3 When "Limited Operation" is selected, after exiting MENU, only. 4 Displayed only for ML691. 5 With Form Tear...
... reversed feed back to the tear bar position. MENU SETTINGS TABLE Group Item Extension Right Margin (Cut Sheet) (cont.) Function If the printer data exceeds the width of the paper. Table Footnotes: 1 Selects both double-width and double-height character or single-width and single-height characters. 2 When "1 line" ID selected, the receiving buffer size is idle for EPSON emulation. Settings (defaults are set to 8K bytes. 3 When "Limited Operation" is selected, after exiting MENU, only. 4 Displayed only for ML691. 5 With Form Tear...
Users Guide
Page 74
... tray by the tabs on the Pin Tractors and turn the platen knob to ON. 1. If a form fragment remains inside the printer with the Power Switch set to push the fragment out of the printer. . ML690/ML691 User's Guide 74 Open the access cover. . Make sure the printer is turned OFF. . Rotate the platen knob and remove the forms from the front of the printer. Clearing Paper Jams Continuous Feed Paper Jams WARNING: Do not carry out...
... tray by the tabs on the Pin Tractors and turn the platen knob to ON. 1. If a form fragment remains inside the printer with the Power Switch set to push the fragment out of the printer. . ML690/ML691 User's Guide 74 Open the access cover. . Make sure the printer is turned OFF. . Rotate the platen knob and remove the forms from the front of the printer. Clearing Paper Jams Continuous Feed Paper Jams WARNING: Do not carry out...
Users Guide
Page 82
... to Alarm Conditions Use the following table for the type of paper in use. Add paper and press the SEL key. INDICATOR SEL ALARM OFF ON OFF Flashing OFF Flashing Flashing ON Flashing Flashing ALARM MEANINGS AND ACTIONS Paper has run out. Print data is received but printing does not start because no paper is set incorrectly for guidance on how to respond to alarm conditions. ML690/ML691 User's Guide 82 Problem with cut sheet. Remove the cut sheet feeding. Printing cannot...
... to Alarm Conditions Use the following table for the type of paper in use. Add paper and press the SEL key. INDICATOR SEL ALARM OFF ON OFF Flashing OFF Flashing Flashing ON Flashing Flashing ALARM MEANINGS AND ACTIONS Paper has run out. Print data is received but printing does not start because no paper is set incorrectly for guidance on how to respond to alarm conditions. ML690/ML691 User's Guide 82 Problem with cut sheet. Remove the cut sheet feeding. Printing cannot...
Users Guide
Page 83
Print position offset The horizontal printing position is no paper in not properly connected. There is offset. Re-install the printer driver correctly. Install the ribbon cartridge. You must set the Power Switch to check if it works. The printhead is illuminated but no printing takes place. Check that the power cable is powered on -line mode by pressing the SEL key. Wrong interface cable attached. The ribbon cartridge has not been installed. The start position may change the start position. Plug another appliance into...
Print position offset The horizontal printing position is no paper in not properly connected. There is offset. Re-install the printer driver correctly. Install the ribbon cartridge. You must set the Power Switch to check if it works. The printhead is illuminated but no printing takes place. Check that the power cable is powered on -line mode by pressing the SEL key. Wrong interface cable attached. The ribbon cartridge has not been installed. The start position may change the start position. Plug another appliance into...
Users Guide
Page 84
... User's Guide 84 PROBLEM Printing slows down CAUSE SOLUTION Print direction changes suddenly to normal. The print carriage does not operate. The ribbon is not installed correctly. The characters are still enabled. Replace the ribbon cartridge with a dry cloth. The ribbon has been wound incorrectly. Print Error warning When the printhead overheats, the printer automatically starts unidirectional split printing. Reinstall the ribbon cartridge correctly. Incorrect print setup for the applications according to print at high speed. Reselect print setup...
... User's Guide 84 PROBLEM Printing slows down CAUSE SOLUTION Print direction changes suddenly to normal. The print carriage does not operate. The ribbon is not installed correctly. The characters are still enabled. Replace the ribbon cartridge with a dry cloth. The ribbon has been wound incorrectly. Print Error warning When the printhead overheats, the printer automatically starts unidirectional split printing. Reinstall the ribbon cartridge correctly. Incorrect print setup for the applications according to print at high speed. Reselect print setup...
Users Guide
Page 86
... the end. correctly selected. May happen in the application. Paper with their left and right margins correctly in bidirectional printing. The LF/FF key was pressed. Eject the continuous forms and select the printer's cut sheet feed No paper feed. Improper cut sheet mode. Load sheets with wrinkles, folds, or other extended types. Use paper types specified for the printer. Change paper. Unable to the end, or they are not printed in the print-out. Cancel tear-off perforation spacing.
... the end. correctly selected. May happen in the application. Paper with their left and right margins correctly in bidirectional printing. The LF/FF key was pressed. Eject the continuous forms and select the printer's cut sheet feed No paper feed. Improper cut sheet mode. Load sheets with wrinkles, folds, or other extended types. Use paper types specified for the printer. Change paper. Unable to the end, or they are not printed in the print-out. Cancel tear-off perforation spacing.
Users Guide
Page 87
... perforation spacing does not match the physical tear-off the Pin Tractors. Use paper types specified for loose paper. Match the paper length selected in line with their left and right Pin Tractors, making for this printer. Set the Paper Type lever to tighten the paper. ML690/ML691 User's Guide 87 PROBLEM CAUSE Improper continuous forms feed No line feed, and no paper feed. Forms are loaded with their left holes in the application with the right ones. Inadequate distance between cut sheet and continuous forms modes No cut sheet mode...
... perforation spacing does not match the physical tear-off the Pin Tractors. Use paper types specified for loose paper. Match the paper length selected in line with their left and right Pin Tractors, making for this printer. Set the Paper Type lever to tighten the paper. ML690/ML691 User's Guide 87 PROBLEM CAUSE Improper continuous forms feed No line feed, and no paper feed. Forms are loaded with their left holes in the application with the right ones. Inadequate distance between cut sheet and continuous forms modes No cut sheet mode...