H machine;patient on and running,set blood pump display to 400,display bounces between 380 to 410 but yet when machine is brought back into tech area,can never duplicate;set it at 400 and it stays locked on 400.new blood pump motor has also been installed.dont see the point in replacing LP341 and/or LP342 boards if pump display is locked in at 400 with no bouncing.talked with a fellow tech and he believes that a bad blood pump rotor could be a cause.simple enough to swap out,just what to look for with the rotor in comparison to a new one,not seeing anything

did you do the entire calibration with the old rotor?

yes