Ricoh M001 Service Manual page 245

Why do we need this feature?
Normally, the AIO is replaced by the user at about 15k. But some users will refill the old
AIO with toner, and use the same AIO again. If this occurs, the used toner tank will not be
emptied. So there must be a way to stop users from repeatedly filling the old AIO with
fresh toner.
If you enable SP 3923, then after a certain number of prints are made with the same AIO,
the machine prevents printing, and a completely new AIO must be installed. If you try to
print again by removing/replacing the old AIO or adding new toner, there will be no
printing.
How does the machine know if the AIO is a new one?
The AIO has serial number information on a chip. The machine checks this number when
the AIO is placed in the machine.
Why is this feature disabled?
Ricoh does not support the practice of refilling old AIOs with fresh toner, so the feature is
disabled by default. But if field service stations know that this practice occurs in their
region, or they know a customer who is doing this, then they can enable the feature.
SM 6-17
Printing Process
M001