Ricoh D124-17 Service Manual page 487

3. Insert the unit slowly to avoid damaging the print head caps and suction cap wipers, and press the
maintenance lock lever (1) down as you set the unit in the machine.
4. After replacing the maintenance unit with a new one, open SP2102-001 and then touch
[EXECUTE] to reset the maintenance unit counter.
Maintenance Unit, Waste Ink Collection
485