U2-40 error is comming in sharp Ar235, kindly help with details

You must be reset your copier.
press,# -interrupt-c-interrupt.
Press 16 press start key.Then machine is ready.

This error occurs when the toner cartridge's sensor is dirty with spilled toner. When you insert it, it tends to short the circuit it enters is thus the error U2. To reset it , clean the sensor and its area inside the copier then insert the toner cartridge and perform the following by pressing these keys in this order; #, Interrupt, C, Interrupt. The display must go off. Enter 16 and press Print key and you are done.