Having trouble installing a new toner cartridge in a Sharp 168D.

Much sorry. You should peacefully understand. On cassette there is hole with toner, he locked or plastic by bolt or film in either event you first install the cassette on image prezhney. usually she is fixed in slots by thereby that after you will open the way a toner, he falls downwards. So tuba with toner is made thereby that under got up tuba хвостик film remains is sat and available to his(its) pash on itself and push off, this can be a plastic bolt or film. Not it is difficult her(its) find, besides, on box is always enclosed instruction or she there is beside you in documentation, usually drawings with methods place on inner face of the front lid. Do Not hurry, all easy. Good luck!

please sir you saw a cartridge instalation guide thaks

green labeled facing you when you install the toner in the machune there is a wute tape on it