Designjet 500/800 Series System error 21:10
System error 21:10 is usually a Service Station failure. Error 21:10 may be seen on the LCD display of the following models: DesignJet 500, DesignJet 510 and DesignJet 800. The first thing you could try is “Turn the printer off and allow a few minutes for printer to cool, then turn the printer back on … Read more