Ricoh G147 Service Manual page 341

the up position for the remainder of the service life of the PCU, regardless of how many
times the PCU is removed and reinstalled in the machine.
When a new PCU is removed from its box, handle it carefully to avoid hitting the trip
lever and moving it accidentally out of its down position.
If the trip lever on a new PCU is not down when the PCU is inserted in the machine
for the first time, the machine will not detect the PCU as a new unit and the
initialization sequence will not occur.
SM 6-19 G147