ML 491 - Dot Matrix Printer OKI - Free user manual and instructions

Product type	Dot matrix printer
Brand	OKI
Model	ML 491
Printing technology	Dot matrix with needles
Printing speed	Up to 300 cps (characters per second) in draft mode
Printing resolution	Up to 360 x 360 dpi
Maximum paper size	Width 420 mm (A3 landscape format)
Media types	Continuous paper, cut sheets, labels, envelopes
Interfaces	Parallel (Centronics) and serial (RS-232C)
Network option	OkiLAN 6130 card for Ethernet 10/100 Mbps
Power supply	100-240 V AC, 50/60 Hz
Power consumption	Approximately 150 W operating, 10 W standby
Dimensions (W x D x H)	Approximately 589 x 544 x 218 mm
Weight	Approximately 18.5 kg
Monthly duty cycle	Up to 20,000 pages per month
Noise level	Approximately 55 dB(A) operating
Main functions	Single-sided printing, multi-part (carbon) printing, continuous paper management
Maintenance and cleaning	Regular cleaning of the print head and paper path with a lint-free cloth
Safety	Mandatory grounding, do not use an unprotected extension cord
Spare parts and repairability	Interchangeable ink ribbon, replaceable print head, parts available from the manufacturer
General information	User manual available in French, English, Spanish and Portuguese

Frequently Asked Questions - ML 491 OKI

How to install the OkiLAN 6130 network card on the ML 491 printer?

Turn off the printer, unplug the power cord and interface cable. Remove the detachable panel near the interface connector. Insert the OkiLAN 6130 card onto the rails until it is connected. Connect the UTP 10/100Base-T cable, then reconnect the power. Turn on the printer.

How to print a network configuration sheet?

Press the Test button on the front of the OkiLAN 6130 card. The configuration sheet will print in ASCII text by default.

How to configure the printer's IP address with the ExtendView utility?

Download and install ExtendView from the OKI website. Launch the module, highlight the device, select Configuration from the menu. Under Server Configuration, click Set Permanent, modify the IP, mask or gateway, then click OK.

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

Open a browser and enter the IP address of the print server (obtained by holding the Test button for 5 seconds). Log in as admin (password: OkiLAN). Select TCP/IP, click Set Permanent, modify the settings, then click Submit Changes.

What is the default password to access the print server web page?

The default password is OkiLAN and the username is admin.

How to reset the OkiLAN 6130 network card to factory settings?

Turn off the printer. Turn it on and wait 30 seconds. Press the Test button on the card for 20 seconds until the lights flash, then release. The card will restart with default settings.

What to do if the printer does not print after network installation?

Check that the printer does not show an error (paper jam, etc.). Make sure the IP address is correct and the network cable is connected. Restart the printer and the print server.

How to replace the ink ribbon of the OKI ML 491?

Turn off the printer. Open the front cover. Remove the old ribbon by releasing it from the guides. Insert the new ribbon following the arrows, then close the cover. Check that it is taut.

What types of paper are compatible with the OKI ML 491?

The printer accepts continuous paper (fanfold), cut sheets, labels and envelopes. The maximum size is A3 landscape (width 420 mm).

How to clean the print head of the OKI ML 491?

Turn off the printer. Open the cover. Use a lint-free cloth slightly moistened with isopropyl alcohol to gently clean the head's needles. Allow to dry before closing.

USER MANUAL ML 491 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.