Question about Apple LaserWriter 8500 Printer

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A slight burning smell from the fuser region ...

Which of the following is the most likely cause of a slight burning smell -- heat roller, pressure roller, thermistor, thermal switch, something else? The heat roller has some scarring and the fuser assembly cover has some brown (heat?) discoloration marks, but the printer seems to work ok otherwise.


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  • dorkenenergy Apr 01, 2008

    So I should just let it burn itself out?

  • dorkenenergy Apr 01, 2008

    So I should just let it burn itself out?

  • dorkenenergy Apr 01, 2008

    Thanks -- I'll try that.



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Although a faulty thermistor could be to blame for the fuser running above target temperature, the usual explanation for a slight burning smell is a bit of paper debris stuck inside the fuser, slowly scorching away to nothing.


Posted on Mar 31, 2008

  • Alastair Macleod
    Alastair Macleod Apr 01, 2008

    If you can see any paper, it's worth seeing if you can fish it out with a pair of tweezers.

    Failing that, a good going over with a vacuum cleaner can sometimes shift previously concealed debris.

    Be careful in either case not to damage either of the two fine charger wires which are strung across the paper path (though if you're working around the fuser, neither is really likely to be close enough to be in any real danger)



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