Electrical Components
SM 53 D372
500-Sheet
Finisher
D372
Sensors
S2 Front Fence HP Sensor
Detects the HP of the front fence at the front of
the finisher.
S3 Output Tray Full Sensor
Located at the bottom left corner of the finisher.
When the actuator on the tray rail switches this
sensor ON, this signals tray full.
S4 Paper Height Sensor
Used to monitor the positions of the edge
depressors that press down on the trailing edge
of the stack at the end fence. When the top of
the stack pushes the depressors up, this
switches the sensor OFF and signals the tray lift
motor to lower the tray.
S5
Positioning Roller HP
Sensor
Detects the HP of the positioning roller when it is
up.
S6 Rear Fence HP Sensor
Detects the HP of the rear fence at the back of
the finisher.
S7 Stapler HP Sensor
Detects HP of the stapler at the front of the
finisher.
S8
Stapling Tray Paper
Sensor
Detects paper on the stapling tray,
Solenoid
SOL
Stack Depressor
Solenoid
When a stack is output, the tray lift motor lowers
the tray slightly. At this time, the stack depressor
solenoid switches ON and retracts the edge
depressors briefly so that the trailing edge of the
stack can fall onto the tray. The solenoid then
switches OFF and lowers the arms against the
trailing edge of the stack to keep it down against
the end fence.
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