Ricoh G092 Service Manual page 180

PRINT PROCESS
OPC drum cleaning
The OPC drum-cleaning blade [D] (which is always in contact with the OPC drum)
removes excess toner remaining on the OPC drum after the toner is transferred to
the transfer belt. The spiral paddle shaft [E] carries the removed toner to the waste
toner bottle ( ) 6).
New PCU detection
The K PCU has a fuse as does the YMC PCU. When electricity flows through the
fuse for the first time, the PCU is seen as a new one and the PCU counter is set to
"0." The fuse automatically opens when 250 sheets are printed out. If the fuse does
not open, this symptom is regarded as an error (bits 6 and 7, SP5-994).
G081/G092 6-18 SM