Ricoh D124-17 Service Manual page 674

6. Troubleshooting
No.
2 Paper transport fan
3 Front Cover Switch: Right
4 Cutter HP Switch
5 Exit Sensor
6 Paper Exit Guide Switch
7 Front Cover Switch: Left
8 Cutter Return Switch
9 Cutter Motor
Vertical Encoder HP
10
Sensor
672
Component
The large fan mounted below the perforated platen plates.
This fan creates the suction that holds the paper on the paper
path.
One of two safety switches that disable the machine when the
front cover is opened.
Detects when the cutter has arrived at the home position on
the right and switches the cutter motor off.
Located at the paper exit of the main machine, detects the
leading and trailing edges of the paper. Signals an error if
the paper fails to arrive or leave the sensor location within the
prescribed time.
Detects when the exit guide plate on the front of the machine
is opened and closed.
One of two safety switches that disable the machine when the
front cover is opened.
Detects when the cutter has arrived at the left side of the
machine after cutting. Reverses the cutter motor, which moves
the cutter back to the home position on the right side of the
machine.
Drives the cutter to the left and right across the paper path
when cutting paper. The cutter cuts as it moves from right to
left. When the cutter reaches the left side, the cutter return
sensor reverses the motor. A guide lever falls into a lower
track that lowers the cutter so that it passes under the paper
on its return to the home position on the right.
Mounted opposite and lower than the vertical encoder sensor
on the left side of the machine, this sensor also reads the code
on the rim of the vertical encoder wheel, and detects when
the wheel reaches the home position and switches off the
vertical motor. This sets the encoder wheel at the start position
for every job.
Function