Question Brother MFC-9335CDW printer says "WT Box End Soon" ?

zillah

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Dec 24, 2005
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Hi folks

I used to have a Brother MFC-9330CDW Printer since 2015.
I never replaced the Waste Toner Box. Yes, I did replace the drum once and now I have disposed of that printer.

Now I have got two almost new Brother MFC-9335CDW Printers from my friend which were sitting in his workshop storage for a while as he is using two industrial printers now.

The message that I am getting on one of these MFC-9335CDW printers is : "WT Box End Soon"

I followed these links:




Below is what I had checked on the Waste Toner Box:


Can you advise what else I am missing to check ?
Is it a false positive warning or do need to replace the Waste Toner Box ?


Thx
 
Two almost new Brother MFC-9335CDW Printers
Since I have 2 same models I swapped the WT box between the one with no error let us name it as A to the one that has an error message let us name it B ,,,,,,now both machines have the same errors
My interpretation to that the the WT box on machine B needs to be replaced and machine B has a problem as well (because error message didn't get cleared when we used good WT box ) ?