PHOTOCONDUCTOR UNIT
SM 6-43 G104
Detailed
Descriptions
6.5.7 PCU DETECTION (DEVELOPMENT UNIT DETECTION)
Unit Set Detection Pins
Each PCU has a connector [A]. The machine uses this to detect if the PCUs and
development units are in the machine. Each PCU is detected through this
connector when the drum positioning plate is closed.
New Unit Detection
Each PCU also has a circular hook [B]. The machine uses this to detect when a
new PCU is installed.
On a new unit, the hook holds up the terminal [C]. This hook turns a switch on, and
the machine detects that the unit is new.
When the unit is driven for the first time, the hook turns and releases the terminal
and the switch turns off. The hook cannot pick up the terminal again. Because of
this, the machine detects that this PCU is not new.
G105D109.WMF
[A]
[B]
[C]
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