At time of copier installation
The first time the machine is turned on following installation, a factory-set flag informs the machine that the
PCU has not yet been initialized. The machine carries out the necessary initialization automatically.
When a replacement PCU is installed
Replacement PCUs have a special mechanism that trips when they first start, informing the machine that a
new PCU has been installed. (Preinstalled PCUs do not include this mechanism, and have two empty pins
in their connector.)
Replacement PCU ships in state [A]. Slight rotation of PCU gear [B] at power-on releases plate [C], breaking
the circuit and informing the FCU that the new PCU is a replacement unit.
Drum Charge
265
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