Front door open issue with my hp color laserjet 2320 fxi mfp

[SalmanSM]

I have fitted everything perfectly and also confirmed many times everything is ok door is closed but still printer giving front door open status on LCD also the cartridge motors are not starting when the power turns on but before opening by myself it was ok and also start the motors properly I think is due to front door open error please help me to fix it? I have also closed the door with little force one

thing I want to confirm that this problem is started after I have removed the cartridge drawer and put it back on his place. Can anyone tell me where is the sensor of front door of hp color laserjet 2320 fxi MFP which tells the system that the door is open but I have closed it completely.