Ricoh G133 Service Manual page 687

print black-and-white jobs only.
Toner End Recovery
The machine assumes that the toner cartridge has been replaced if either of the following
occurs when the near-end or end status exists:
The front door is opened and closed.
The main switch is turned off and on.
Then the machine starts to supply toner to the development unit. After supplying toner, the
machine clears the toner near-end or end status if the following condition is detected:
Toner end sensor detects that toner is supplied.
The machine tries to supply toner for a maximum of 5 times (SP 3-102).
SM 6-15
Process Control
G133