ML 620 - Dot Matrix Printer OKI - Free user manual and instructions

Product Type	Dot matrix printer
Brand	OKI
Model	ML 620
Print Technology	Impact dot matrix
Number of Pins	9 or 24 (depending on version)
Resolution	360 x 360 dpi (max)
Print Speed	Up to 600 characters per second
Max Paper Width	Up to 420 mm (A3 landscape format)
Interfaces	Parallel, USB, network (via OkiLAN 6130 card)
Power Supply	230 V AC, 50/60 Hz
Power Consumption	Standby: ~15 W, Printing: ~80 W
Dimensions (W x D x H)	Approx. 400 x 250 x 200 mm
Weight	Approx. 5 kg
Main Functions	Printing forms, invoices, labels, multi-part documents
Maintenance and Cleaning	Clean print head with appropriate kit, replace ribbon regularly
Safety	Unplug before any maintenance, avoid liquids near printer
Spare Parts and Repairability	Ribbons, print heads, network cards available
General Information	Compatibility with common operating systems, long consumable life

Frequently Asked Questions - ML 620 OKI

How to install the OkiLAN 6130 network card on my ML 620 printer?

Turn off the printer, unplug the power cord and interface cable. Remove the removable panel near the interface connector, insert the OkiLAN 6130 card by sliding it on the rails. Reconnect the UTP cable, then the power cord. Turn on the printer: the red and green LEDs flash then the green stays lit if installation is successful.

How to configure the IP address of the network card?

Download and install the ExtendView utility from the OKI website. Launch the application, select your printer, then choose the configuration options. In the 'Server Configuration' box, click 'Set Permanent' and modify the IP address, subnet mask or gateway. Click OK to save.

How to print a configuration sheet?

Press the Test button on the front of the OkiLAN 6130 card. An ASCII configuration sheet prints, containing the current network settings.

How to reset the network card to default settings?

Turn off the printer, then turn it back on. Wait 30 seconds. Press and hold the TEST button for 20 seconds until the LEDs flash. Release the button: the card resets to factory values and restarts.

What types of paper can I use with the ML 620?

The printer accepts continuous paper (forms, invoices) and single sheets up to A3 format (420 mm wide). Use standard quality paper for dot matrix printing.

How to replace the printer ribbon?

Open the front cover, remove the old ribbon by disengaging it from the print head. Insert a new compatible OKI ML 620 ribbon following the guides. Close the cover and perform a test print.

What to do in case of a paper jam?

Turn off the printer. Open the cover and gently remove the jammed paper by pulling forward. Avoid tearing the paper. Check that the paper path is clear before closing and restarting.

How to clean the print head?

Use a cleaning kit for dot matrix printers (alcohol-impregnated sheet). Insert the sheet and run a short print cycle. You can also clean manually with a cotton swab soaked in isopropyl alcohol, after unplugging the device.

Where to find drivers for the ML 620 printer?

Download drivers and utilities from the official OKI Data website (www.okidata.com). Select your model ML 620, then the 'Drivers' section for your operating system.

The printer is not printing, what to check?

Make sure the printer is on, the cable is properly connected, the ribbon is installed correctly, and the paper tray has paper. Check that no error message appears. Refer to the configuration sheet for network settings.

USER MANUAL ML 620 OKI

The OkiLAN 6130 Print Server enables Ethernet network users to connect to a network-configured printer. It supports 10/100-megabit networks, TCP/IP Direct Printing and Server-Based Printing.

Note: The OkiLan 6130 can only be used be used without a parallel cable being connected.

Installing the OkiLAN 6130 Network Card

1. Turn off printer power.
2. Unplug the power cord.
3. Detach the interface cable from the rear of the printer.

Note: Your printer may look like either example below.

1. Pry off the breakaway panel next to the interface connector with a screwdriver

1. Insert the OkiLAN 6130 by sliding it along the rails in the recess of the printer, until it is plugged into the socket in the rear of the recess.

1. Attach the 10/100Base-T UTP cable to the receptacle on the back of the OkiLAN 6130. Attach the other end of the cable to the Network.

1. Plug the power cord into the power outlet (if provided).

Powering On the OkiLAN 6130

Turn printer power on. The red and green indicators on the OkiLAN 6130 blink during self-test. When self-test completes successfully, the red indicator goes off and the green indicator stays on.

Printing a Configuration Sheet

To print configuration information, press and hold the Test button on the front of the OkiLAN 6130 for five seconds.

Note: By default, the configuration sheet prints in ASCII text.
The content of the configuration sheet depends on your printer and system setup.

Configuring Your Print Server

Using OKI's ExtendView Utility to Configure Your IP Address

First, download the ExtendView utility from OKI Data's website at http://www.okidata.com – navigate to the page for your specific product, then click on Drivers, then Utilities, to locate the software.

Next, install the ExtendView utility and launch the application.

1. In the ExtendView utility, highlight the device you are going to configure.

1. Choose the configuration option from the dropdown menu.

1. From the Server Configuration box, click Set Permanent. Then, if you wish to change the IP address, Subnet Mask and Default Gateway, you may do so.

When the desired options have been set, click OK. The Print Server will automatically be reset at this point, and your options will have been saved.

(If you have network configuration questions, please contact your network administrator.)

Proceed to the instructions for Installing Your Driver.

Using Your Print Server's Built-In Web Page to Configure Your IP Address (Alternate Method)

First, open your browser. Then, type the IP address of your Print Server into the browser's address bar. (If the IP address is unknown, you can obtain it by pressing and holding the Test Button on the front of the OkiLAN 6130 for five seconds)

1. Log into the Print Server as Admin. (Username: admin Password: OkiLAN)

2. Select the TCP/IP option from the Network Connection menu to launch the TCP/IP Configuration menu.

1. From the TCP/IP Configuration Menu, click Set Permanent under the IP Address Resolution option. Then, if you wish to change the IP address, Subnet Mask and Default Gateway, you may do so.

When the desired options have been set, click Submit Changes. The Print Server will automatically be reset at this point, and your options will have been saved.

(If you have network configuration questions, please contact your network administrator.)

Proceed to the instructions for Installing Your Driver.

Installing Your Driver

From the CD or OKI Data website - follow the installation instructions.

Entering the Printer IP Address

While installing the printer driver for TCP/IP using the CD supplied with your printer.

When you come to the screen requesting the IP Address for the printer, you must select "IP Address" (instead of the default "Search address") and type in the printer's IP Address before clicking Next. If you need help, please contact your Network Administrator for the IP Address to use.

LPR

Make sure there are no error conditions in the printer (e.g., paper jam) before you use LPR to discover the printer. The product driver utility is available from OKI Data's website at http://www.okidata.com

Resetting to Factory Defaults

1. Turn off the printer.
2. Turn on the printer and wait for the print server to boot up (about 30 seconds).
3. Press and hold the Test button on the front of the OkiLAN 6130 for 20 seconds. The lights will flash briefly after releasing the button, then the card will reset.

Note: Your printer may look like either example below.

OR

1. Release the TEST button.

The print server resets to the factory default settings and reboots.