: Clean the underside of the scanner glass where the carriage parks; if it can't see the white calibration strip, it won't stop moving. Cable Check
Look at the bottom or side of the scanner unit. Some models feature a physical switch designed to lock the scanner head during transit. Ensure it is set to the "Unlocked" position. samsung printer scx 4300 scanner error solution patched
The scanner lamp fails to light up or the mirrors are too dusty to calibrate. : Clean the underside of the scanner glass
