ML 420 - Dot Matrix Printer OKI - Free user manual and instructions

Product type	Dot matrix printer
Brand	OKI
Model	ML 420
Print technology	Impact dot matrix (needles)
Print resolution	Up to 360 x 360 dpi
Print speed	Approximately 600 cps (characters per second) in draft mode
Paper format	Continuous paper (tractor) and single sheets
Interface	Parallel (Centronics), serial (RS-232C), optional OkiLAN 6130 network
Dimensions (W x D x H)	Approximately 480 x 370 x 250 mm
Weight	Approximately 11 kg
Power supply	220-240 V, 50/60 Hz
Power consumption	Approximately 80 W printing, 15 W standby
Main functions	Printing forms, labels, slips, reports
Maintenance and cleaning	Clean the print head regularly, replace the ink ribbon
Safety	Unplug before any intervention, avoid humidity
Spare parts and repairability	Print head, ink ribbon, ribbon cartridge, mechanical parts available
General information	User manual available in multiple languages, online support

Frequently Asked Questions - ML 420 OKI

How to install the OkiLAN 6130 network card on my OKI ML 420 printer?

Turn off the printer, unplug the power cord and interface cable. Remove the knockout panel near the interface connector. Slide the OkiLAN 6130 card onto the rails until it is fully inserted. Connect the UTP cable, then reconnect the power and turn on the printer.

How to configure the IP address of the OKI ML 420 printer via the ExtendView utility?

Download and install the ExtendView utility from the OKI website. Launch the application, select the device in the list, then choose 'Configuration'. In the TCP/IP tab, choose 'Set Permanent' and enter the IP address, subnet mask, and gateway. Click OK to save.

How to print a configuration sheet of the printer?

Press the 'Test' button located on the front panel of the OkiLAN 6130 print server. A configuration sheet prints automatically with network settings and system information.

How to reset the OKI ML 420 printer to factory settings?

Turn off the printer, then turn it back on. Wait about 30 seconds for the server to start. Press and hold the 'Test' button for 20 seconds until the LEDs blink, then release. The network card restarts with default settings.

What type of ink ribbon is compatible with the OKI ML 420?

Use an OKI 43000022 ink ribbon or equivalent. It comes as a cartridge that is easy to replace.

How to clean the print head of the OKI ML 420?

Turn off the printer and unplug it. Wait for it to cool down. Gently clean the print head with a lint-free cloth slightly dampened with isopropyl alcohol. Avoid touching the needles directly.

The printer does not print: what to check?

Check that the printer is powered on, the interface cable is properly connected, and the paper is correctly loaded. Also ensure there is no paper jam and that the ink ribbon is not worn out.

How to install the print driver for the OKI ML 420?

Download the driver from the OKI Data website (www.okidata.com) or use the provided CD. Start the installation. When prompted for the printer's IP address, select 'IP Address' and enter the configured address, then follow the instructions.

The printer prints strange or illegible characters, what to do?

Check that the print driver matches the model and connection (parallel, serial, or network). Ensure the emulation settings are correct (e.g., Epson FX, IBM Proprinter). Restart the printer and PC.

How to configure the IP address via the server's built-in web page?

Open a web browser and enter the current IP address of the print server (obtained by holding the Test button for 5 seconds). Log in with username 'admin' and password 'OkiLAN'. Go to TCP/IP, choose 'Set Permanent', modify addresses if necessary, then click 'Submit Changes'.

USER MANUAL ML 420 OKI

OkiLAN 6130 Network Card Installation .... 3

OkiLAN 6130 Network Card Installation

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 because it is not 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.

Close-up of a hand inserting a plastic component into a white industrial machine casing (no visible text or symbols)

OR

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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.

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OR

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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.

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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.

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OR

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1. Release the TEST button.

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

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OU

Close-up of a hand inserting a USB into a computer monitor (no visible text or symbols)

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OU

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OU

Hand inserting a CD into an open computer monitor (no visible text or labels)

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LPR

Hand inserting cables into a device casing (no visible text or symbols)

OU

Close-up of hands inserting cables into a portable electronic device (no visible text or symbols)

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O BIEN

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LPR

Hand inserting cables into a device casing (no visible text or symbols)

Close-up of hands inserting a cable into a computer monitor (no visible text or symbols)

Close-up of a hand inserting a plastic component into an open air conditioner unit (no visible text or symbols)

OU

Close-up of a hand inserting a USB into a computer monitor (no visible text or symbols)

Close-up of a hand inserting a cable into a white industrial machine component (no visible text or symbols)

OU

Close-up of a hand inserting a CD into a computer monitor (no visible text or labels)

Two-panel black-and-white photo showing hands connecting cables to an open electronic device (no visible text or symbols)

LPR

Hand inserting cables into a device casing (no visible text or symbols)

OU

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1. Solte o botão TEST.