havig probs myself. the reset for the dl620 is as follows. switch off at socket. wait for a couple of minutes. before you turn on again turn the on/off button to the off position. turn socket back on. now on my machine there is a `P` button. i press and hold it whilst pressing the on/off switch/button. keep `P` held down for a few seconds. a few beeps are heard. release. turn of and on again. this resets my machine if yours is different then all i can suggest is experimenting with whatever buttons are on your model. hope this helps
dave g
February 2008