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Christopher MedinaSep 12, 2025
What to do if the ribbon has reached its end-of-life on my Oki ML620?
- MMelissa DillonSep 12, 2025
Replace the ribbon with a new one.
What to do if the ribbon has reached its end-of-life on my Oki ML620?
Replace the ribbon with a new one.
What to do if there is no paper feed on my Oki ML620?
If there is no paper feed, sheets may be located off the paper guide. Load sheets with their left edges against the paper guide.
What to do if blanks or deformed characters appear in double-height type or other extended types on my Oki ML620?
If blanks or deformed characters appear in double-height type or other extended types, it may be due to a paper feed error caused by line feeding when printing a single character. Use the printer’s built-in fonts when printing important documents or bills.
What to do if several blank lines appear in the print-out when continuous forms are used on my Oki ML620 Printer?
If several blank lines appear in the print-out when continuous forms are used, tear-off perforation spacing may be selected. Cancel tear-off perforation spacing.
Why is my Oki ML620 Printer not printing?
If your Oki Printer isn't printing, there might be several reasons: * The printer driver might not be installed correctly, in which case you should reinstall it. * The printer may have simply stopped printing; try pressing the SEL key. * The printer might be out of paper, so ensure you load paper.
What if content of a single sheet is printed on two sheets when using cut sheets on my Oki Printer?
If, when using cut sheets, the content of a single sheet is printed on two sheets, the paper setting selected in the application does not match the physical paper size. Match the paper setting selected in the application with the physical paper in use.
What if content of a single form is printed on two forms when using continuous forms on my Oki Printer?
If, when using continuous forms, the content of a single form is printed on two forms, the paper length selected in the application does not match the physical paper length. Match the paper length selected in the application with the physical paper length in use.
How do I fix too large or small left and/or right margins on my Oki ML620?
If you have too large or small left and/or right margins, it could be that the left or right margin is not correctly selected. Select and adjust the position again depending on the paper type.
What to do if a line of print is missing on my Oki ML620?
If a line of print is missing, it may be due to broken wire pins. Contact your dealer.
How to fix broken and uneven vertical lines on my Oki Printer?
Broken and uneven vertical lines may occur in bidirectional printing. Try adjusting the Print Registration on your Oki Printer.
General| Color | - |
|---|---|
| Maximum resolution | 288 x 72 DPI |
| Mean time between failures (MTBF) | 25000 h |
| Sound pressure level (printing) | 55 dB |
| Sound pressure level (quiet mode) | 52 dB |
| Standard interfaces | USB 2.0 |
| Windows operating systems supported | Windows 2000, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Ultimate x64, Windows Vista Business, Windows Vista Business x64, Windows Vista Home Basic, Windows Vista Home Basic x64, Windows Vista Home Premium, Windows Vista Home Premium x64, Windows Vista Ultimate, Windows Vista Ultimate x64, Windows XP Home, Windows XP Home x64, Windows XP Professional, Windows XP Professional x64 |
| AC input voltage | 120 V |
| Dimensions (WxDxH) | 438 x 375 x 191 mm |
Details the printer's reliability, paper handling, and print speed capabilities.
Step-by-step guide for loading continuous paper using rear, front, and bottom feeds.
Instructions for loading single sheets of paper using top and front feed paths.
Explains how to set and adjust the initial print starting position on the page.
Guide on adjusting the lever for optimal paper feeding based on thickness.
Explains how to select and change print quality modes like Draft, HSD, SSD, and NLQ.
Details how to adjust character pitch (CPI) and select proportional spacing.
Information on changing print speed settings to Normal, High Speed, Quiet, or High Copy.
Procedure for resetting the printer to clear errors or restore default states.
Step-by-step instructions for accessing and leaving the printer's configuration menu.
Procedure to restore all printer menu settings to their original factory default values.
Detailed, step-by-step instructions for installing a new ribbon cartridge.
Procedures for safely removing jammed paper from both continuous and cut sheet feeds.
Instructions for performing diagnostic print tests like Font Sample, Rolling ASCII, and Hexadecimal Dump.
Guidance on interpreting printer indicator lights and responding to alarm states.
A comprehensive table listing common printer issues, their causes, and recommended solutions.
