I purchased a 'HP LaserJet 100 color MFP M175' about 3 years ago. Since the day that I got it and set it up, it works well for all its functions.
1.) Re-calibration, about every 2 - 4 hours that system wakes and re-calibrates its self. Makes the same sounds as if its printing documents. Not a big deal unless your trying have a conference call next to the printer. Not sure why it has to do this, looked through the menus, don't see an option to disable it ?
2.) Flashing green LED on the front panel, not sure what it signifies other than the system is powered up. Again, looked through the menus and don't see an option to control it. Placed a call to tech support, they had no idea other then system on. I hate to put tape over it, but its starting to come down to it.
Any help is appreciated.