Fuser installation in an imaging device

An imaging device, comprising:

• a fuser assembly for fusing toner to a sheet of media, the fuser assembly including a heat transfer member, a backup roll engaged therewith to define a fusing nip, and a drive gear connected to the backup roll such that the backup roll rotates when the drive gear rotates, the fuser assembly being removable from the imaging device;
• a drive gear assembly having at least one gear which operatively engages with the drive gear of the fuser assembly when the fuser assembly is in an operable position, the at least one gear rotating due to engagement with the drive gear of the fuser assembly during insertion of the fuser assembly into the operable position;
• a drive motor coupled to the drive gear assembly to rotate the at least one gear and in turn to rotate the drive gear and the backup roll of the fuser assembly to feed the sheet of media through the fusing nip;
• a sensor arrangement configured about the drive motor to sense rotation of the drive motor and based thereon provide at least one sensor output signal, when the fuser assembly is inserted and moved toward the operable position, the drive gear of the fuser assembly engages the at least one gear of the drive gear assembly and in turn causes rotation of the drive motor;
• and
• a controller to receive the at least one sensor output signal to determine whether or not the fuser assembly is fully inserted into the operable position and to initiate a message to a user of the imaging device indicating same.