helped a contractor set up a used 650c- seems to work fine other than the cutter- when printing it will go for an inch or so- then pause and cut a quarter of an inch off of the leading edge of the sheet- then resume printing- until the end of the sheet- then it does not cut? i had to use the form feed/cut button- now it works fine when doing the demo plots and such but even sending the test print from windows does it.. any thoughts? newer compaq cpu... and it is being run off of a usb port adapter... thanks- jjd