I’ve been out on service calls and have seen, or heard, unusual things happening in the exit area of the HP 4200/4300 printers. What I’ve noticed is that sometimes the paper feeds through normally but with a little extra clicking or snapping noise. Other times the noise is accompanied by the paper not feeding through properly.
There are two exit flags that paper has to go through as it exits out of the machine to the face-down delivery area. One right-side flag is for the face-down bin-full sensor and the left side flag is just to provide equal pressure on the paper to the right side flag. On the bottom of the top cover HP has put two dampener pads like what you see on a solenoid. Over time these pads wear out. Continue reading