Ricoh M5 Service Manual page 69

Rest Position
1.
When the Start key is pressed, the main motor turns on and the slider solenoid stays off. Since the
slider solenoid is off, the reverse pawl engages the ratchet ring of the reverse clutch. The reverse
clutch then engages and the slider moves from the rest position towards home position.
2. Home Position
Upon reaching the home position, cam C on the underside of the slider disengages the reverse pawl,
At the same time,
and the slider stops.
CPU is continua Ily monitoring the home
position.
3. Forward
The CPU energizes the slider solenoid which
of the forward clutch. The forward clutch
4. Return Position
As the slider reaches the return position, cam B disengages the forward pawl.
5. Reverse
Soon after that, the solenoid turns off.
The reverse clutch engages and the slider moves in the reverse direction.
reverse clutch.
6. Home Position
As the slider reaches the home position again, cam C disengages the reverse pawl
and cam A actuates the home position switch.
7. Forward
The CPU energizes the slider solenoid which engages the forward pawl with the forward
clutch. This causes the slider to move forward.
8. Rest Position
A the slider reaches the rest position, the CPU first turns off the main motor. After 0.3 second,
S
the CPU then turns off the slider solenoid.
the home position switch is actuated by cam A. Since the
position switch, it determines that the slider is now in home
causes the forward pawl to engage with the ratchet ring
then engages and starts driving the slider forward.
The reverse pawl, then engages with the ratchet ring of the
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