Just about every day in the middle of the day, the scanner on my 8560 MFP starts to "hunt".
The lamp stays lit and moves about 2 inches then back again. This continues until I lift the lid and keep it open for awhile.
Is there an overheating issue with this printer?
There is a sensor in the scanner that is picking up the sun light coming in through a window, which activates the "hunt". I had this happen to me at a certain time of day when the sun was beaming in through the window.