Theory

Our photocopier at work has needed to be serviced since December. It has displayed the "time for periodic maintenance" message for months now. We keep calling Toshiba, but no-one is coming. They must be short staffed.
Well yesterday the copier showed signs of being back to normal, even though the service message is still on there. My theory is that because the copier was left long enough it "serviced" itself, much like if you don't wash your hair it also will eventually "wash" itself.
Maybe I'm crazy, but I believe that's what has happened, and I'm sticking to it!