Brother HL-1435 Won't Sleep

Hi All,

I installed a new Brother HL-1435 yesterday. The sleep mode worked as
expected. About an hour later, it woke up on its own while I was playing a
video game. I did not ask for a printout. Nothing was printed. It just
woke up. Now it seems to ignore the sleep settings. In the properties
window, I've got it set to sleep after 1 minute, but it stays fully powered
for much longer. Intially, I was using the parallel interface. I've
switched to USB and the problem remains. Uninstalling and reinstalling
doesn't help.

Is there a factory reset key combination? I'm using XP Pro with a Athlon
1700 and 512 RAM.

Any help would be appreciated.

TIA
Marc