Ricoh Toscana-P1 J007 Service Manual page 246

No. Component
Maintenance HP Sen-
SN
sor
SN PFU Paper Sensor 1
Paper End Sensor –
SN
Tray 1
Temperature/Humid-
SN
ity Sensor
SN Trailing Edge Sensor
loaded arms in against the sides of the tank. Drawing the base
closer to the side of the tank forces the tip of the arm out. The ink
level sensor detects the position of the tip every time it passes
through the gap of the sensor.
An interrupt sensor mounted in the maintenance unit that controls
the operation of the maintenance motor in the print head cleaning
cycle. At the beginning of the cleaning cycle, a feeler leaves the
gap of this sensor and switches the motor on. At the end of the
cleaning cycle the feeler rotates into the gap, switches the sensor
off. This switches the motor off and the caps and wiper remain
down at the home position.
Located below the above the bottom plate of the paper cassette
in Tray 2 (the optional paper feed unit). A spring loaded bottom
plate keeps the top of the stack against the pick-up roller for paper
feed. A free-swinging feeler rests on top of the stack. After the last
sheet feeds, one end of the feeler falls down through a cutout in
the bottom plate. An actuator on the other end of the feeler swings
up and out of the gap in the paper end sensor. This signals paper
end.
Located below the transport belt. A spring loaded bottom plate
keeps the top of the stack against the pick-up roller for paper feed.
A free-swinging feeler rests on top of the stack. After the last sheet
feeds, one end of the feeler falls down through a cutout in the
bottom plate. An actuator on the other end of the feeler swings up
and out of the gap in the paper end sensor. This signals paper end.
Located inside the printer near the transport belt. The temperature/
humidity sensor constantly measures temperature and humidity
around the transport belt. The printer uses these readings to adjust
the amount of charge applied to the areas of the belt that contact
the leading edge, center, and trailing edge of the paper. For more,
please refer to Section "4. Troubleshooting".
Mounted at the right, rear corner of the printer (viewed from the
back). The feeler of this interrupt sensor is mounted in the center of
the paper path and connected to a long shaft. The end of the shaft
has an actuator that moves in and out of the sensor gap. The feeler
is pushed down by every sheet of paper and the actuator leaves
the gap, then the feeler pops up again after the trailing edge
passes and the actuator enters the gap and switches the sensor
Electrical Component Functions
Function
6
245