How to ready toner not recognized - Toshiba E-Studio 255, 355 and 455

Toshiba eStudio 255, 355, 455 showing Toner not recognized

Are you getting the status to Toner not recognized on your Toshiba eStudio 255, 355, 455, 250, 350 and 450 copiers? The following instructions describe how to reset maintenance code Toner not recognized for a Toshiba E Studio copier machine. We are sharing a few methods to fix the error, so check them one by one until it gets solved.

Maintenance sign means that the copier needs to be well serviced and checked if something is to be replaced. Consumables such as drum, blade, fuser rollers and developer are changed at such times. If you are sure that you have replaced the correct part or nothing is to be replaced, then you can proceed to clear the sign.

Meaning of the Toner recognized Error Code:

This indication Toner not recognized means wrong toner installed. Make sure you are using genuine toner with toner chip on it.

How to reset Toner recognized?

Follow this procedure to clear Toner recognized:

Switch off the machine while holding down “0 & 8” buttons switch the machine on. when TEST MODE shows on the display, press input “499” then press the “start button”, if the value is not 0, make sure that value is 0 and press interrupt or start, then switch off, wait a while then switch the machine On again your problem will be solve.

Even if the above fixes are shown in error codes then check these all things. Be sure to use the original toner with tone chip. You shake the toners and also check toner at the end of cartridge they are notorious for breaking.

Some possible cause:

1. Check the toner.
2. Check Toner the chip.
3. Check the Toner detection inside 6 springs.
4. Check toner motor and gear.

I hope this was helpful, don’t forget to share it via any of the share buttons on this page are highly welcomed as well.


  1. how it work on estudio 356? i search a lot and find that in 356,456 and some other models it is diffrent and it is 4 digit codes, for example error code c44 or c440 in other model like 355 solve with 0 8 and 400 code but in 356 you must use 08 and code=2002 for fix it but now i cant find code for solve problem toner not recognized in 356 model, please help me . tnx

    1. Actually I can't understand what you are saying. I am confused Is your problem is toner not recognized or the error code c440?
      If your problem is Toner not recognized,0&8 then = 499 - 0- OK (if 499 doesn't come ,check 295, or 695).
      Or if your problem is Error code C440,press 0&8= 400 - 0 - OK

    2. yes my problem is " toner not recognized" but in toshiba 256,356,456 modeles 08-499 not work and other 3digit code not work, for example for toner empty error must try 5155 code, its write on manual handbook of printer but there is no code for "toner not recognized" problem


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