Ricoh C252 - Drum Drive Mechanism

DRUM
C252 6-18 SM
6.6.2 DRUM DRIVE MECHANISM
Mechanism
Main motor [A] (dc motor)
↓
Belt [B]
↓
Gears [C]
↓
The drum only rotates in one direction (CW, viewed from the front of the machine).
NOTE:
1) The main motor encoder sends pulses to the main motor control board
(1000 pulses = 360 degrees).
2) The CPU monitors the pulses and controls the drum speed and stop
positions.
3) The drum has two sensors;
• Master eject sensor [D] (master eject position and drum home
position)
• Feed start timing sensor [E]
4) The drum has two stop positions;
• Master eject (drum home) position
• Master feed position (feed start timing sensor + 111 pulses)
C252D016.WMF
[A]
[B]
[C]
[D]
[E]