Question about OKI C5200n Laser Printer

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Check toner cartridge

Just about every time I go to print something I always get "Check toner cartridge 543:K toner sensor error" I have taken it out, cleaned it, everything I can think of and I still get the error. It is becoming a MAJOR pain in my a**. Can you help?

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Re: Check toner cartridge

Yes to non OEM's and those of you who are using them they cause heap em troubles.

It can be the drum they sit on, or toner dust on contacts of drums, machine base, and toner cart sides , also machine has eyes that get dusty, on machine frame at every toner/drum.
Pull out a tonerlook at side of handle there is a rectangle cut out silver/or black inside this lines up with "eyes" in side of printer frame, clean em.

I have also found a lot of import oki toners going around causing grief too, but fix is always sucessfull by A new gen non import toner and drum and ensuring contacts are free from toner dust.

Another thing I find customers doing is not replacing toners when machine requests them ie at REPLACE TONER, instead they find that just openning and closing lid keeps them going, but these machines hold a complete toner in the drum unit too, so all they are doing is depleting that and when they do finally provide a toner it goes straight into filling up the drum and therefore shortly will display repalce toner again.

Signgirl - your using OEM's so I suspect drum/contacts/eyes what % are t drums at and are they oem too?

Wendy - dont recommend aftermarket/refills all the money you save will be paid to someone like me to come and fix the problems they end up causing.

OKiproblem - ever use aftermarket carts/drum, and what are % of consumables?

Posted on Dec 20, 2007

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This is nearly always the fault of the toner cartridge. The previous cartridge may have left toner on the transfer roller and this may have contaminated the new toner cartridge. Take the toner cartridge out and inside the printer under where the toner cartridge goes you will see a felt roller that goes across the printer and has a gear at one end. Wipe this roller with a dry clean lint free cloth, rotating it to make sure it is completly clean.
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Hi dianabusk:
You have a bad K (Black) toner cartridge or the sensor is dirty,the sensors are located on the toner cartridge and in the machine where the toner cartridge seats. Try cleaning the sensors and/or replace the K (black) toner cartridge. The sensors are a silver color.

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Thanks for using FixYa. Toner sensor error is related to the agitator inside the toner cartridge, it occasionally falls out of its housing so it does not move the toner sensor which is the white plastic piece that moves up and down on the coloured handle, the toner sensors themselves see this white flag if it doesn’t move then the printer thinks the sensor is broken so toner sensor error is flagged and if the flag moves too quickly the machine thinks the toner is empty. To resolve the issue your printer is facing with please check that toner lock lever is in position and follow the following procedure---

Press the cover release and open the printer’s top cover fully. Make sure the Toner Cartridge in question is correctly positioned and the right hand clip is pushed back. While holding it by its top centre, lift the image drum, complete with its toner cartridge, up and out of the printer. On the Right hand side of the toner look for a sensor patch, make sure this is not dirty. If it is dirty clean it with a soft object such as cotton wool. Now look inside the printer opposite to where the sensor patch would sit. There is a black square with a sensor located inside and check that this is not dirty. Now replace the drum and toner, and close the printer cover. Try to print a test page and it will start printing normally.

Please do accept the solution if the issue is resolved or else revert for further assistance.


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