Ricoh Di-C1.5a Manual page 191

Toner Near-end Detection Method
SP3045 002
0: Pixel counter, motor rotation counter, and toner
end sensor
1: Toner end sensor only
Slide 191
If set to 1, there is no toner in the toner cartridge at the near end condition. The
customer can change the bottle immediately.
If the setting is 0, there may still be toner in the bottle when near-end occurs.
Some toner is wasted if the customer changes the bottle immediately. However,
the customer has some time to get a new toner cartridge.
Default is 0.
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Di-C1.5 Training