I opened up my HP photosmart 7660 printer to repair a broken cartridge latch. After putting it back together, it turns on but won't function due to a ("cover open") message even though the cover is closed. I did not see any parts get loose when disassemling the housing. I also can't Identify where or how the cover open sensor works or it's location. My searches online have come up with no referrences to the cover open sensor. Anyone know where it is or what it looks like. Very Frustrating.
Thank you,
tony