Oki ML 420 Mac issues.

You need to go on your mac and download the driver and install it on your mac.
https://www.usa.canon.com/internet/portal/us/home/support/details/printers/support-inkjet-printer/ip-series/pixma-ip6000d
Assuming printer only has UBS interface Mac should recognise the printer is connected to it once you install the driver .
If it has an internet protocol ip address tcp/IP then give printer an ip address in the range of the MAC and it will be detected by the mac.

This error is almost always caused by a corrupt print job or driver. If the machine was working fine it may be as simple as canceling the print job and restarting everything (computer and printer).
Before sending the job to print again, it would be worthwhile to print a test page. If you can, you know the issue is specific to whatever you're trying to print. If you cannot, you know it's a most likely a driver issue.

Other possibilities:
- a recent OS update/upgrade killed the driver. This happened to a fair number of Windows 8 users.

-You're attempting to print from MAC but don't have the printer/driver setup for postscript. Weird but true, even in 2015 PCs and MACS still use different protocols to print to laser printers. (Not an issue for ink jets)

If this is the issue, here are the directions to setup the printer and MAC to work on your network. Notice the printer (wireless or not) should be wired for config-

PRINTER SETUP:
(1) Connect printer to the ethernet port
(2) On the controler of the printer, select menu
(3) with the cursors (down) select Admin Menu, and press ok (the center key)
(4) the text "wired network" will appear. Press OK
(5) Move the coursor down to tcp/ip. Press ok
(6) "get IP address" will appear. Press ok
(7) select panel. Press ok
(8) press "menu" and repeat (1) to (5)
(9) "get IP address" will appear. Move the cursor down to "IP Address". Press OK
(10) with the coursor select write the IP address among the margins of your Router. The Gateway numbers shlould be the same as the ip number of your router. MAsK is always 255.255.255.0
(11) press menu and restart the printer

IN YOUR MAC
(1)Install the 3110cn modules version 2.1.3 Build 5 (usually in the CD, or in DELL site download area)
(2) Open Setup Print Utility and select "Add a printer"
(3) Select IP printer (any of the possibilities you are offered are ok), WRITE THE ADDRESS YOU WROTE IN YOUR PRINTER
(4)In printing using select Dell

You can move the printer to wireless, just keep the IP address the same.

Hope this helps!

Go to "IP" in the add printer section. It is a "globe" at the top of the page. In address put the address of your printer there and name the printer at the bottom. Worked for me.

Check you firewalls. Sometimes you will have to allow certain mac addresses or certain ip addresses (may be less secure than the mac address), then change sharing level to full, before things begin to work.

Please post back and let me know if this helps!

NO AVAILABLE DRIVERS FOR MAC
http://my.okidata.com/PP-ML420.nsf?opendatabase
at the manufacterer website
contact mac - they rock - should help yah out - might be on the phone a while.
hope this helped da404

Good Day Joromich,

Sounds like your problem is just an IP address conflict. The easiest way to fix this is going to be through the front panel of the printer. You will need to configure the NIC to DHCP AUTO. This will allow the switch/router to configure the printer to the IP address schema your network is using.

You should also check you switch/router settings to ensure if you are using MAC address filtering (this has nothing to do with your Mac computer). The MAC address is the physical hardware address of any NIC device. It is the "permanent" device identifier that the manufacturer has assigned to the NIC. If your switch/router is configured to use MAC address filtering you will need to know this address. It will be a series of HEX values similar to this:

AE:02:4F:3B:55:2F

And is usually located on a sticker on the outside of the NIC adapter, if not you might need to remove the card from the printer to check it, however you should be able to obtain a NIC configuration page from the printer through the control panel. If you are using this additional level of network security (helps to prevent rogue devices from attaching to the network), you will need to add the MAC address to the switch/router filtering table. Most home network users do not use this additional layering of security, but when using wireless access points/routers, every extra bit of network security helps.

Once you have reconfigured the printer for you network IP schema through the use of DHCP, the network should now see the device. If you are configuring your printer drivers to print to the IP address of the device, you should disable the DHCP AUTO setting once everything is working. Otherwise the switch/router will replace the printer IP address once the lease is expired then causing your printer not to be accessible again.

Once the switch/router has provided the new printer with an IP address, you will be able to access the internal web page of the printer through your Internet browser. At this point you can then change the IP address configuration to DHCP OFF. This will prevent the printer NIC from making an IP address request and keep the IP address that has been assigned as a STATIC address.

Configuring the printer driver on the Mac is easy, once the device has been added to the network, the Mac Add Printer Utility will see the IP address of the printer and you can use this to print directly to it rather than using AppleTalk. As for problem of not having the orignal install CD, not a problem as the printer is listed within the Mac OS printer table. If you want to use the Oki OEM driver follow the link listed here:

http://my.okidata.com/pp-C5300n.nsf/openingdrivermenu?OpenFrameSet

Select the one you want and install it as usual. Hope this helps get you going.

Cheers, Happy New Year!

Keith
USA

To print via IP on MAC  type IP address in queue type print ,name the printer and  the correct driver/ fy...35/

When I send a job to the printer via Ethernet, nothing happens on the printer. I only get a solid red light. Why?
This is an indication of a media size mismatch. Make sure that the correct media size is set on the tray to which you are printing, and try the job again.
(from http://www.xante.com/support/aw1200/)

Good luck!
John
(Xante ASA)

Check the receive buffer on the Oki. I usually set it to the highest (88k or 128k). You might also check the print head gap if you are printing multi part invoices. If the print head is too close it may overheat and stop printing. If you have a different printer, swap it out and see if it prints correctly. It may be a problem with the JetDirect 170x, not the printer.