Sir, My copier model RICOH MP 2000Le shows error . ADD TONER & some time it shows SC 302

Hello.
That error is related to TD sensor error.
I advise you to call a trained Technician

Push clear modes 1 0 7 then stop for 5 seconds

It's a fuser overheat error enter service mode to clear, if it comes back service call ( push in sequence clear modes(yellow) 1 0 7 hold down stop for 5 or so seconds, screen will change, power down, red switch. -Carl

Enter in the service mode: Clear(yellow key) 107 press/hold Clear/Stop more 4 second,enter in the SP mode open the front cover ,turn OFF the copier,wait 1-2 minutes close the front cover and turn ON the copier.

"Unstable Fusing Temperature" Chang Fusing Thermistor.

SC:302
Charge roller current leak

Symptom: A current leak signal for the charge roller is detected.
Possible Cause:
?? Charge roller damaged
?? High voltage supply board defective
?? Poor connection of the PCU

The Ricoh Aficio MP 161 LN give error code - SC 302

Please adivse

the charge roller in the drum unit is faulty or need to be cleaned.strip the drum unit and clean the unit

possible toner pump

SC 302 has to do with you charge corona wire.  It's unrelated to the toner spill.  It could be a bad conora wire.  Sometimes it's the power supply.  There could be a lot of troubleshooting and repair to do on this one, you might want to contact a dealer in your area since the have the right tools for the right job.