Ricoh Di-C1 Manual page 194

Toner hopper unit
During reassembly, pour some carrier (8g) into the
hopper.
» A small bottle of carrier is provided with the new toner
hopper spare part as an accessory. It contains 8g of
carrier.
» Follow the procedure in the manual carefully. The shutter
comes off easily after the inner cover has been removed.
Toner end sensor
Do not replace this in the field. Replace the toner
hopper unit.
Slide 194
Do not replace the toner end sensor in the field.
This sensor is part of the toner hopper unit. Replace the complete toner
hopper unit instead. Otherwise, carrier will spill out onto the floor, and
will not be present in the hopper after reassembly.
The sensor is not supplied as a spare part anyway.
Replacement
194
Di-C1 Training