Ricoh A156 - Roller Drive and Control

5. ROLLER DRIVE AND CONTROL
The roller drive motor (a stepper motor) [A] drives the proof tray exit rollers
[B], vertical transport rollers [C], bin transport belts [D], bin transport rollers
[E], and bin exit rollers [F] via the front and rear roller drive belts [G and H],
pulleys, and gears, as shown above.
The roller drive motor turns on when the copier signals the S/S CPU to
switch the motor on. When the proof tray exit sensor [I] (in the normal mode)
or the bin exit sensor [J] (in the sort/stack/staple mode) detects the trailing
edge of the final copy, the S/S CPU informs the copier through the fiber
cable and the interface PCB. Then the copier signals the S/S to stop the
roller drive motor.
The S/S CPU monitors the roller drive motor speed by counting pulses from
the timing disc [K] through the roller drive timing sensor [L].
[G]
[E]
[J]
[D]
[F]
[I]
[B]
[K]
[A]
[H]
[L]
[C]
A156/A160/A162 6-12 STM