20 Most Recent OKI B4400 Digital Mono Printer - Black Questions & Answers

The chip is not reusable and needs to be replaced every time. You should be able to find a chip on the internet somewhere. I own a Cartridge World printer cartridge refilling store and I do not recommend refilling your own toner cartridges or buying super cheap ones off the internet. The toner is generally such a low grade that it degrades your drum cartridge causing you to replace a $219 drum unit before you should have to.

If all the leds are fast blinking, you have a fatal error.
Most likely something has been overlooked during re assembly (forgotten connector maybe ?) as there is no need to reset the fuser.

That is a paper jam code. Reopen the cover, and clear all paper jams. Close the cover, and then I would reset the machine by turning it off and on if the code continues. http://www.german-parts.de/oki_manual/paperjam/stau_b400_series.pdf

Open the lid. Mounted under the lid you should see a horizontal bar which is actually the laser [LED]. Once your toner cart has emitted, enough loose toner has accumulated on the laser that it can no longer draw on the page correctly. Using something soft and barely dampened with water [use a soft cotton cloth, NO PAPER PRODUCTS, no dirty rags, etc] and wipe gently from L to R to remove the loose toner. Turn to a clean section of the cloth and do it once more. GENTLY! No pressure, do not scrub it, or you can damage the laser. Close the lid and print something. You should be back to good now.

1. change cartrige if problem not solved 2. there is mechanic problem 3. or LSU optics are not clear

I have a toner bar out and cannot get it back in and the 001B code came up... any ideas on where I can go with this now?