Ricoh M001 Service Manual page 131

Thermistor Adj DFU
If this is "Yes", the machine automatically adjusts the charge roller voltage
2910
and transfer current in response to the temperature in the machine.
[Yes/ No]
Waste Toner Cnt
2980
Displays the waste toner count.
SM
Printer Engine Service Mode
Thermistor Adjustment
Used Toner Count
5-13 M001