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Oki ML620 - User Manual

Oki ML620
100 pages
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User's Guide
59320101 my.okidata.com
RT322
ML620/ML621

Table of Contents

Other manuals for Oki ML620

Questions and Answers

  • M
    Mary MyersSep 18, 2025
    What to do if the TOF is not correctly selected on my Oki Printer?
    • K
      Katherine ParkerSep 22, 2025
      Initialize the printer.
  • M
    moorelaurenAug 25, 2025
    What to do if my Oki ML620 has no power?
    • A
      Alex MartinAug 25, 2025
      If your Oki Printer has no power, check these possible causes: * Ensure the power cable is properly connected to both the power outlet and the printer. * Test the power outlet by plugging in another appliance to see if it works. There may be a power outage or an issue with the outlet itself.
  • A
    Anthony HodgesAug 25, 2025
    What to do if the printhead is moving but no printing takes place on my Oki ML620 Printer?
    • B
      berrywilliamAug 26, 2025
      If the printhead on your Oki Printer is moving but no printing occurs, the ribbon cartridge may not be installed. Install the ribbon cartridge.
  • R
    Ryan BoyleAug 26, 2025
    Why is my Oki Printer printing slowly?
    • Z
      zimmermanrachelAug 27, 2025
      Your Oki Printer might be printing slowly because the printhead is overheating. When this happens, the printer automatically starts unidirectional split printing. The printer will return to its original operation when the printhead temperature drops sufficiently.
  • N
    nancygainesSep 23, 2025
    What type of paper should I use with my Oki ML620 if I have Paper not specified for the printer?
    • J
      Julie BartlettSep 23, 2025
      Use paper types specified for the printer.
  • N
    Nicole ArcherSep 23, 2025
    What to do if the LF/FF key was pressed on my Oki ML620?
    • B
      Brittany CarterSep 23, 2025
      Press the LOAD/EJECT key.
  • M
    mcdanielmandySep 10, 2025
    What to do if there is no paper feed on my Oki ML620?
    • S
      smithcharlotteSep 10, 2025
      If there is no paper feed, sheets may be located off the paper guide. Load sheets with their left edges against the paper guide.
  • C
    Christopher MedinaSep 12, 2025
    What to do if the ribbon has reached its end-of-life on my Oki ML620?
    • M
      Melissa DillonSep 12, 2025
      Replace the ribbon with a new one.
  • T
    Tina TaylorSep 3, 2025
    How do I fix too large or small left and/or right margins on my Oki ML620?
    • V
      vsmithSep 4, 2025
      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.
  • M
    Michael CookSep 1, 2025
    How to fix broken and uneven vertical lines on my Oki Printer?
    • H
      hannaaprilSep 1, 2025
      Broken and uneven vertical lines may occur in bidirectional printing. Try adjusting the Print Registration on your Oki Printer.

Summary

Chapter 1: Introduction

Printer Features

Details the printer's reliability, paper handling, and print speed capabilities.

Chapter 2: Paper Handling

Loading Continuous Forms Paper

Step-by-step guide for loading continuous paper using rear, front, and bottom feeds.

Loading Cut Sheet Paper

Instructions for loading single sheets of paper using top and front feed paths.

Top of Form (TOF)

Explains how to set and adjust the initial print starting position on the page.

Setting the Paper Thickness Lever

Guide on adjusting the lever for optimal paper feeding based on thickness.

Chapter 3: Print Settings

Print Quality

Explains how to select and change print quality modes like Draft, HSD, SSD, and NLQ.

Character Pitch

Details how to adjust character pitch (CPI) and select proportional spacing.

Print Speed

Information on changing print speed settings to Normal, High Speed, Quiet, or High Copy.

Printer Reset

Procedure for resetting the printer to clear errors or restore default states.

Chapter 4: Menu Mode

Entering and Exiting Menu Mode

Step-by-step instructions for accessing and leaving the printer's configuration menu.

Resetting the Menu to the Factory Defaults

Procedure to restore all printer menu settings to their original factory default values.

Chapter 5: Maintenance

Replacing the Ribbon Cartridge

Detailed, step-by-step instructions for installing a new ribbon cartridge.

Clearing Paper Jams

Procedures for safely removing jammed paper from both continuous and cut sheet feeds.

Testing the Printer

Instructions for performing diagnostic print tests like Font Sample, Rolling ASCII, and Hexadecimal Dump.

Chapter 6: Troubleshooting

Responding to Alarm Conditions

Guidance on interpreting printer indicator lights and responding to alarm states.

Problems;Solutions

A comprehensive table listing common printer issues, their causes, and recommended solutions.

Oki ML620 Specifications

General IconGeneral
Color-
Maximum resolution288 x 72 DPI
Mean time between failures (MTBF)25000 h
Sound pressure level (printing)55 dB
Sound pressure level (quiet mode)52 dB
Standard interfacesUSB 2.0
Windows operating systems supportedWindows 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 voltage120 V
Dimensions (WxDxH)438 x 375 x 191 mm

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