Have a strange one. Customer called because the waste toner was full and did not give them a warning. After checking this out by swapping an empty bottle with part of a towel stuffed into the waste toner bottle neck, the machine does not indicate a full waste toner bottle. Swapped out the retaining section with a working one, and still had the issue. Pulled out the waste toner bottle and box and the machine did not give a "no waste toner bottle" message. Replaced the engine PWB and updated firmware and still have the issue. I was able to print out 2 status pages without the waste toner bottle in the machine. I tested the customer's retaining section with a machine at the shop and it works as it's supposed to. Tried tech support and got no help.
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