Toshiba e studio 351c need firmaware

Attached link is your manual in PDF. maybe you can find trouble shooting information in these docs.

try replacing the ram

press 1+3 +star mc on

Developer must be replaced by a technician. Old developer has to removed and new installed. Then there are software adjustments and counters to be reset as well.

clear very well the paper path especially if there is bridge who trasfer the paper to the finisher and check the sensor inside it or check if there is any load at the main motor

There is a sensor just behind the waste toner box that sends beam through the water toner box to see if reaches the other side. If it does not, then the sensor thinks that the box is full. So you need to clean the waste toner box with some liquid cleaner so that it looks white from outside. Once the box is dry, try again. This should work now. Otherwise, there is problem with the sensor.

Your copier is likely trying to print to a different thickness of paper (ie thick 1/thick 2) then you have in whatever tray it is trying to print from. You will either have to change what is in that drawer via user functions or delete the job and try it again with a different paper type.

Press "clear" and "8" simultaneously and hold, this should display the error code...what is the error code?

You need to post the error code (top right hand corner of the screen

what model if is Toshiba e-35 or e-350 all this machine is B & W you only can print in colour with e-3511 or 351C or 2500/3500 machine