LaserJet2100 has a burning smell when printing

[rubysky3131]

Hello,
My Laserjet 2100 when printing there is a burning [?] smell which gets stronger the more copies it does at one time. I can't figure where it's comming from and have no idea where to start smell that starts

 

[davcon]

Update the drivers.
http://h20000.www2.hp.com/bizsupport/TechSupport/SupportTaskIndex.jsp?lang=en&cc=us&taskId=130&prodSeriesId=25469&prodTypeId=18972&supportTaskId=42174
Maybe you've been hacked
http://www.extremetech.com/computing/106945-tens-of-millions-of-hp-laserjet-printers-vulnerable-to-hacking