How do you replace print head on okidata 8480

The machine needs to be cleaned.

Unplug power, look down on printhead some have a chrome metal clamp that swings out and then you pull up on print head. Some models have two screws that hold print head in. Then the print head pulls up.

If heads are really clean, then it's time for a replacement printer.

Menu Light flashing is a printhead thermister overheat problem.
Power off the printer and try reseating the print head; if this fails you'll need to replace the print head!

It would help if you said where the paper jam was. However the fact that it was ok until you cleared the jam indicates you have knocked something out of place. Its just possible one of the high voltage contact springs that touch the drums has stuck in and no longer makes contacts with one of the drums. Make sure all the semi circular springs move in and out freely. Also check the led heads in the top cover. Make sure all the cables are seated in the heads ok. Make sure all the heads are in the same position and one has not turned around. Retrace your steps as your drums seem to be problem.

The problem your having is a spacer motor. It's located under the carriage that holds the ribbon/printhead. The part number is 56513701. Available at Seattle Platen - Dale 1800-221-2388.

Here's a free copy of the Okidata 320T service manual that will walk you through testing and verfying before ordering the replacement part.

If this helped you, please hit me up with a FIXYA. Thanks.

http://www.feedroller.com/Store/Service%20Manual/SER320T.PDF

Yes quite possible pin broke on head, check ribbon is fitted correctly and has plastic sheild on front of it intact

Your printhead is in correctly but not aligned, Please loosen the 2 screws that holds the printhead.Remove ribbon(all this while the printer is powered off) Now look on the right side there is a lever that makes the printer go closer to the ribbon ,move the lever to number 9 and move the head over to the left side of the printer.push the head forward slightly towards the black roller and tighten the 2 screws again ,install the ribbon and move the blue lever to 1 and try printing again.
Hope this helps.Dezzi

Well, I had that problem once. What I did was that I used the printers cleaning tools. You can acces them by entering Printers in the ControlPanel. Then right click on your printer and select Settings. Look through there. Worked for me.