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 22 Loading Cut Sheet Paper 23 Cut Sheet Paper, Top and Front Feed 23 Ejecting Cut Sheet Paper 25 Notes on Different Types of Paper 25 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 22 Loading Cut Sheet Paper 23 Cut Sheet Paper, Top and Front Feed 23 Ejecting Cut Sheet Paper 25 Notes on Different Types of Paper 25 Top of Form...
Users Guide
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... Clearing Paper Jams 72 Continuous Feed Paper Jams 72 Cut Sheet Paper Jams 74 Cleaning the Printer 75 Printer Exterior 75 Printer Interior 76 Testing the Printer 77 Font Sample Test 77 Rolling ASCII Test 78 Hexadecimal Dump Mode 79 Chapter 6: Troubleshooting 80 General Information 80 Responding to Alarm Conditions 81 Problems / Solutions 82 Appendix A: Parts & Accessories 88 Purchasing Parts & Accessories 88 Consumables 89 Accessories 89 Appendix B: Printer Control Codes 90 IBM Proprinter III Commands 90 Epson FX Commands 93 Oki MICROLINE Standard Commands...
... Clearing Paper Jams 72 Continuous Feed Paper Jams 72 Cut Sheet Paper Jams 74 Cleaning the Printer 75 Printer Exterior 75 Printer Interior 76 Testing the Printer 77 Font Sample Test 77 Rolling ASCII Test 78 Hexadecimal Dump Mode 79 Chapter 6: Troubleshooting 80 General Information 80 Responding to Alarm Conditions 81 Problems / Solutions 82 Appendix A: Parts & Accessories 88 Purchasing Parts & Accessories 88 Consumables 89 Accessories 89 Appendix B: Printer Control Codes 90 IBM Proprinter III Commands 90 Epson FX Commands 93 Oki MICROLINE Standard Commands...
Users Guide
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... of loading paper and printing: Continuous Forms Rear Feed (Push), Continuous Forms Front Feed (Push), Continuous Forms Bottom Feed (Pull), Cut Sheet (Top), Cut Sheet (Front) Oki Data on the Internet The Oki Data Web Sites provide the most current information available on your printer. Chapter 1: Introduction Printer Features Super reliable, durable operation: 25,000 hours Mean Time Between Failures (MTBF) at : www.okiprintingsolutions.com my.okidata.com ML620/ML621 User's Guide You...
... of loading paper and printing: Continuous Forms Rear Feed (Push), Continuous Forms Front Feed (Push), Continuous Forms Bottom Feed (Pull), Cut Sheet (Top), Cut Sheet (Front) Oki Data on the Internet The Oki Data Web Sites provide the most current information available on your printer. Chapter 1: Introduction Printer Features Super reliable, durable operation: 25,000 hours Mean Time Between Failures (MTBF) at : www.okiprintingsolutions.com my.okidata.com ML620/ML621 User's Guide You...
Users Guide
Page 18
... lock levers (1) and move the right tractor (as viewed from the top of Form (TOF)". Open the tractor covers. . You must keep the number of the paper you don't the paper will skew and jam. 10. Adjust the left tractor until the marks align. 1. Note: The factory default setting for the Top of Form (where the printing should begin) is too loose or too tight it towards the front of either pin...
... lock levers (1) and move the right tractor (as viewed from the top of Form (TOF)". Open the tractor covers. . You must keep the number of the paper you don't the paper will skew and jam. 10. Adjust the left tractor until the marks align. 1. Note: The factory default setting for the Top of Form (where the printing should begin) is too loose or too tight it towards the front of either pin...
Users Guide
Page 21
... printing, irregular line feeding and paper jam. 11. NOTE: Make sure that the forms are held neither too loosely nor too tightly between the left and right Pin Tractor covers and feed the continuous forms in the forms onto the sprocket pins. Turn the printer ON. 1. Adjust the Paper Thickness Lever to the tractor. Place the paper through the slot in the PULL position. . Lift the locking lever of the printer. . ML620/ML621 User's Guide 21 Bottom Feed (optional pull tractor) 1. Make...
... printing, irregular line feeding and paper jam. 11. NOTE: Make sure that the forms are held neither too loosely nor too tightly between the left and right Pin Tractor covers and feed the continuous forms in the forms onto the sprocket pins. Turn the printer ON. 1. Adjust the Paper Thickness Lever to the tractor. Place the paper through the slot in the PULL position. . Lift the locking lever of the printer. . ML620/ML621 User's Guide 21 Bottom Feed (optional pull tractor) 1. Make...
Users Guide
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... SEL key is pressed to select the printer, the continuous forms is pressed to the paper cutter. The ALARM indicator illuminates to avoid the possibility of a paper jam. . Do not use the platen knob for this will retract to the tear-off perforations have been aligned with the paper cutter on the access cover. . NOTE: The printer switches to the Pin Tractors. Close the pin tractor covers. Check the position of the tear-off position using the 1/144" line feeds...
... SEL key is pressed to select the printer, the continuous forms is pressed to the paper cutter. The ALARM indicator illuminates to avoid the possibility of a paper jam. . Do not use the platen knob for this will retract to the tear-off perforations have been aligned with the paper cutter on the access cover. . NOTE: The printer switches to the Pin Tractors. Close the pin tractor covers. Check the position of the tear-off position using the 1/144" line feeds...
Users Guide
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... cover and install the front paper tray. 1 2 ML620/ML621 User's Guide 23 Loading Cut Sheet Paper There are closed to the start of paper jams. . Place the Paper Type lever in "Removing Continuous Forms Paper". . Note: If there is turned ON. To load the cut sheet position: . Set the left margin of the paper by adjusting the appropriate Paper Guides (1) along the scale (2) relative to avoid the possibility of the printed line marker arrow. 2 1 . To load the cut sheet paper, top feed and front feed. Cut Sheet Paper...
... cover and install the front paper tray. 1 2 ML620/ML621 User's Guide 23 Loading Cut Sheet Paper There are closed to the start of paper jams. . Place the Paper Type lever in "Removing Continuous Forms Paper". . Note: If there is turned ON. To load the cut sheet position: . Set the left margin of the paper by adjusting the appropriate Paper Guides (1) along the scale (2) relative to avoid the possibility of the printed line marker arrow. 2 1 . To load the cut sheet paper, top feed and front feed. Cut Sheet Paper...
Users Guide
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... SEL button to take the printer off and cause jams. Do not use labels on very narrow paper (e.g., three inches), change the Centering position can cause ink to "Mode1". never from where it automatically ejects the page. ML620/ML621 User's Guide 25 Ejecting Cut Sheet Paper When the printer reaches the end of the envelope the print density may slip causing erratic line spacing. Seal-type cards: Test...
... SEL button to take the printer off and cause jams. Do not use labels on very narrow paper (e.g., three inches), change the Centering position can cause ink to "Mode1". never from where it automatically ejects the page. ML620/ML621 User's Guide 25 Ejecting Cut Sheet Paper When the printer reaches the end of the envelope the print density may slip causing erratic line spacing. Seal-type cards: Test...
Users Guide
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... your software's requirements. If you set the Top of an inch. Note: The factory default setting for the printer. Top of form. You may print the first line of print above or below where TOF is on whether Forms Tear-Off is ON (set . ML620/ML621 User's Guide 26 The first line prints at the default top of Form sets the print start position for the Top of Form (where the printing should begin) is adjustable in...
... your software's requirements. If you set the Top of an inch. Note: The factory default setting for the printer. Top of form. You may print the first line of print above or below where TOF is on whether Forms Tear-Off is ON (set . ML620/ML621 User's Guide 26 The first line prints at the default top of Form sets the print start position for the Top of Form (where the printing should begin) is adjustable in...
Users Guide
Page 46
... the default setting. Manual, 0.5 sec, 1 sec, 2 sec Specify whether to print on narrow paper. 13.6", 8" ML620/ML621 User's Guide 46 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. No, 25.4 mm (1") Change to 8" to skip over perforations or not. If your software has its original printing position. To set in bold italic) Specify manual form paper advancement or select a time; When data...
... the default setting. Manual, 0.5 sec, 1 sec, 2 sec Specify whether to print on narrow paper. 13.6", 8" ML620/ML621 User's Guide 46 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. No, 25.4 mm (1") Change to 8" to skip over perforations or not. If your software has its original printing position. To set in bold italic) Specify manual form paper advancement or select a time; When data...
Users Guide
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... Specify the length of a continuous form. Specify manual form paper advancement or select a time; When data is received, paper is advanced from the current print position to its original printing position. Select Mode 1 or Mode 2 for ML620. when printer is idle for .5, 1 or 2 seconds, paper is moved to the tear position. 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 limit printhead travel when printing narrow columns...
... Specify the length of a continuous form. Specify manual form paper advancement or select a time; When data is received, paper is advanced from the current print position to its original printing position. Select Mode 1 or Mode 2 for ML620. when printer is idle for .5, 1 or 2 seconds, paper is moved to the tear position. 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 limit printhead travel when printing narrow columns...
Users Guide
Page 59
... when a Line Feed is consistently doublespaced, select No; Limited operation locks functions on the control panel; Settings (defaults are set in bold italic) Full Operation, Limited Operation Reset Inhibit To prevent a reset signal from the computer from resetting the printer to its defaults, set to Yes. ML620/ML621 User's Guide 59 MENU SETTINGS TABLE Group Set-Up (cont.) Item Operator Panel Function 3 Function Set control panel operation. Auto LF Auto CR 8 (only displayed for IBM Emulation) Print DEL Code 7 (only displayed for ML Emulation) Set whether to...
... when a Line Feed is consistently doublespaced, select No; Limited operation locks functions on the control panel; Settings (defaults are set in bold italic) Full Operation, Limited Operation Reset Inhibit To prevent a reset signal from the computer from resetting the printer to its defaults, set to Yes. ML620/ML621 User's Guide 59 MENU SETTINGS TABLE Group Set-Up (cont.) Item Operator Panel Function 3 Function Set control panel operation. Auto LF Auto CR 8 (only displayed for IBM Emulation) Print DEL Code 7 (only displayed for ML Emulation) Set whether to...
Users Guide
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... dumping the received data while it feeds to the printer, change the setting to Invalid to keep the default setting of Form. Valid, Invalid Determines whether or not your software spends a long time processing between portions of data it is waiting for more. MENU SETTINGS TABLE Group Set-Up (cont.) Item SI Select Pitch (10 cpi) 8 (only displayed for IBM Emulation) SI Select Pitch (12 cpi) 8 (only displayed for IBM Emulation) Time Out Print Auto Select Function Settings (defaults...
... dumping the received data while it feeds to the printer, change the setting to Invalid to keep the default setting of Form. Valid, Invalid Determines whether or not your software spends a long time processing between portions of data it is waiting for more. MENU SETTINGS TABLE Group Set-Up (cont.) Item SI Select Pitch (10 cpi) 8 (only displayed for IBM Emulation) SI Select Pitch (12 cpi) 8 (only displayed for IBM Emulation) Time Out Print Auto Select Function Settings (defaults...
Users Guide
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... printer makes one pass; select "code page only" for EPSON Emulation) Print Style Select Quiet Mode Select High Copy Mode Function Set which interface the printer uses to idle status when no printing commands have been received. Sets the printer impact mode. Sets the length of time before the interface switches to receive printing commands. in bold italic) Auto Interface, Parallel, USB, Optional 15 sec, 30 sec, 45, sec, 1 min, 2 min, 3 min, 4 min, 5 min 17.1 cpi, 20 cpi Combined, Code Page Only Normal, High Speed, Quiet, High...
... printer makes one pass; select "code page only" for EPSON Emulation) Print Style Select Quiet Mode Select High Copy Mode Function Set which interface the printer uses to idle status when no printing commands have been received. Sets the printer impact mode. Sets the length of time before the interface switches to receive printing commands. in bold italic) Auto Interface, Parallel, USB, Optional 15 sec, 30 sec, 45, sec, 1 min, 2 min, 3 min, 4 min, 5 min 17.1 cpi, 20 cpi Combined, Code Page Only Normal, High Speed, Quiet, High...
Users Guide
Page 68
... bytes. 3 When "Limited Operation" is selected, after exiting MENU, only. 4 Displayed only for ML621. 5 With Form Tear Off function "on," if the printer is idle for serial I/F board mounting. 11 Appears only if the optional Cut Sheet Feeder is installed. ML620/ML621 User's Guide 68 MENU SETTINGS TABLE Group Item Extension Right Margin (Cut Sheet) (cont.) Function If the printer data exceeds the width of the paper. Settings (defaults are set in bold italic) Right Margin Over, .0394" (1 mm...
... bytes. 3 When "Limited Operation" is selected, after exiting MENU, only. 4 Displayed only for ML621. 5 With Form Tear Off function "on," if the printer is idle for serial I/F board mounting. 11 Appears only if the optional Cut Sheet Feeder is installed. ML620/ML621 User's Guide 68 MENU SETTINGS TABLE Group Item Extension Right Margin (Cut Sheet) (cont.) Function If the printer data exceeds the width of the paper. Settings (defaults are set in bold italic) Right Margin Over, .0394" (1 mm...
Users Guide
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INDICATOR SEL ALARM OFF ON OFF Flashing OFF Flashing Flashing ON Flashing Flashing ALARM MEANINGS AND ACTIONS Paper has run out. Remove the cut sheet feeding. Turn the power OFF, verify that the carriage moves properly, then turn the power ON again. If the indicator lights continue to the correct setting. Problem with cut sheet. Printing cannot be resumed at this stage. Responding to Alarm Conditions Use the following table for the type of paper in use. Print data is received...
INDICATOR SEL ALARM OFF ON OFF Flashing OFF Flashing Flashing ON Flashing Flashing ALARM MEANINGS AND ACTIONS Paper has run out. Remove the cut sheet feeding. Turn the power OFF, verify that the carriage moves properly, then turn the power ON again. If the indicator lights continue to the correct setting. Problem with cut sheet. Printing cannot be resumed at this stage. Responding to Alarm Conditions Use the following table for the type of paper in use. Print data is received...
Users Guide
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...no paper in not properly connected. Reset the start position may change the start position. The printer has just stopped printing. Load paper Reconnect the interface cable. Use correct interface cable. You must set the Power Switch to on . SEL indicator is unlit. Check that the power cable is not installed properly. The printer driver is properly connected at both the power outlet and the printer. Wrong interface cable attached. Install the ribbon cartridge. The ribbon cartridge has not been installed. PROBLEM No power No power No printing takes place SEL indicator...
...no paper in not properly connected. Reset the start position may change the start position. The printer has just stopped printing. Load paper Reconnect the interface cable. Use correct interface cable. You must set the Power Switch to on . SEL indicator is unlit. Check that the power cable is not installed properly. The printer driver is properly connected at both the power outlet and the printer. Wrong interface cable attached. Install the ribbon cartridge. The ribbon cartridge has not been installed. PROBLEM No power No power No printing takes place SEL indicator...
Users Guide
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... operation when the printhead temperature drops sufficiently. Replace the ribbon cartridge with a new one . The ribbon is not installed correctly. ML620/ML621 User's Guide 83 The printer is set to normal. The application control codes for the previous print operation are too pale to priority. PROBLEM Printing slows down CAUSE SOLUTION Print direction changes suddenly to its end-of print is missing. Replace the ribbon with a new one . Printout contains completely different characters...
... operation when the printhead temperature drops sufficiently. Replace the ribbon cartridge with a new one . The ribbon is not installed correctly. ML620/ML621 User's Guide 83 The printer is set to normal. The application control codes for the previous print operation are too pale to priority. PROBLEM Printing slows down CAUSE SOLUTION Print direction changes suddenly to its end-of print is missing. Replace the ribbon with a new one . Printout contains completely different characters...
Users Guide
Page 85
... a single line is The left and/or right margins are not printed in fonts when printing important documents or bills. Paper not specified for the printer. When continuous forms are used, several blank lines appear in double-height type printing a single character. or other defects. Use the printer's built-in two lines. Tear-off perforation spacing. Eject the continuous forms and select the printer's cut sheet feed No paper feed. Change paper. Broken and uneven vertical lines. Improper cut sheet mode. Sheets are not loaded to...
... a single line is The left and/or right margins are not printed in fonts when printing important documents or bills. Paper not specified for the printer. When continuous forms are used, several blank lines appear in double-height type printing a single character. or other defects. Use the printer's built-in two lines. Tear-off perforation spacing. Eject the continuous forms and select the printer's cut sheet feed No paper feed. Change paper. Broken and uneven vertical lines. Improper cut sheet mode. Sheets are not loaded to...
Users Guide
Page 86
... Cancel the skip-over perforation spacing does not match the physical tear-off the Pin Tractors. Set the Paper Type lever to continuous forms mode. Paper is set. Several blank lines appear in the application. Abnormal switch-over perforation spacing is off perforation positions. No continuous forms feed. Select the paper length in number of line with the right ones. ML620/ML621 User's Guide 86 PROBLEM CAUSE Improper continuous forms feed No line feed, and no paper feed. Skewed paper feeding. The paper length selected in cut sheet mode. Match the paper...
... Cancel the skip-over perforation spacing does not match the physical tear-off the Pin Tractors. Set the Paper Type lever to continuous forms mode. Paper is set. Several blank lines appear in the application. Abnormal switch-over perforation spacing is off perforation positions. No continuous forms feed. Select the paper length in number of line with the right ones. ML620/ML621 User's Guide 86 PROBLEM CAUSE Improper continuous forms feed No line feed, and no paper feed. Skewed paper feeding. The paper length selected in cut sheet mode. Match the paper...