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Oki 3400n when i first switched on the printer there is already an error blinking.

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  • ketan1y Dec 02, 2008

    Paper Jam in Fuser sat for hours. Literally fusing several sheets together to each other. was able to remove them but have damage to the fuser. But the printer should still work. Not sure what the issue is. I boot up the printer and get 1 blinking green light (as if it is initializing) but it never stops blinking. Tried resetting the machine no access to the Print Server, but know the Network port is functioning.



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First thing to do (if not yet done so) is to access the printer through the web admin interface by typing the printer's IP address in a browser. This gives a lot more information than the blinking lights.

The Status page of the web admin interface may say "toner low" or "toner empty" or "error on toner sensor" and that will tell us which color cartridge to handle.

Note that the OKI 3400n has the annoying tendency to fail when loading in a new toner cartridge: a color is low or empty, you put in a new color tube and then the printer says error on that very color! This can be fixed by pulling out the drum of that color (the drum is that entire block which includes the color tube and the container below it; avoid touching the shiny green roller), and lightly tapping on that drum to evenly distribute the new powder inside the container.

You may have noticed that the once the color tube is loaded in, what it does is to empty its content into the container below. Which means that it's no use swapping color tube once it's installed because the color tube is empty by then, and is just kept there to prevent the ink powder from spilling out of the container. The caontainer itself has 5 electrical contacts on its side used to measure the powder content and the lifetime of the drum.

Viet

Posted on Jan 22, 2009

  • Viet Le Quang Jan 26, 2009

    In fact my previous solution about banging the side of the drum to resolve the "error toner sensor" was only a fluke, because the problem re-occurred on my printer a few days later! Here is the correct handling: Pull the drum unit out and on the right hand side of the drum (when facing the front of the printer and looking at it) there are two small copper contacts, and one inch below there is a small rectangular opening of about 0.5" by 0.25". A shutter is inside that opening and when the shutter slides out, it reveals a RFID circuit behind it. This shutter may be shut and thereby prevents the sensor (on the printer frame opposite that opening) from detecting it!

    So with a paper clip slide the shutter out. You may devise something to keep it open (glue or tape as long it doesn't fall inside the drum and create some jam). Or just slide it open again if later on it shuts anew.

    The data from this RFID is recorded by the printer and the printer's internal counter then determines when the toner and drum are supposed to be replaced. Therefore if you have several drums and toner cartridges of the same color do not swap them indistinctly because that will royally confuse the printer which will indicate the wrong drum and toner lifespans. You may agree that this is not the smartest setup.

    My understanding is that the toner tube also has another RFID embedded in it as part of this setup, I have thrown away my old cartridges but will open the next empty one to verify that point.

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