Greetings. I think I know the answer to this but I hope I'm wrong. :-) Those that have this printer see the USB port on the front. I've been using it to recharge my Droid smart phone for the past couple months. But a couple of days ago, it started flashing the attention light and the display says "Front Door Open". It's not open, I haven't opened it since I got the printer to install new cartridges. I'm hoping that I didn't blow some internal fuse. But the printer won't print anything. When rebooting it, I see 5 ">" under the Hewlett, a very brief Ready, then Front door open. Ideas, suggestions?? Thanks!