Ricoh C211 Service Manual page 453

6. Electrical Timing
Ist
Drum Posltlon Sensor
Main Motor (Reverse)
2nd Drum Posit Ion Sensor
Orlglnal Transport Motor
Reverse Roller Solenold
Master Feed Motor
Master Feed Clamp Solenoid
Buckle Sensor
Main Motor
Left Cutter Switch
Right Cutter Switch
Cutter Motor
Cutter Motor (Reverse)
TI :
T2:
T3:
T4:
T5:
T6:
T1
Ii
J
u
Drum Roates 220°
—1
T3
(
) )
Drum
Rotates
~~
~'
I
T2
I
1-
Orlglnal Feed 14mm .
I
I
(f
I \ ($
I
I
~@~
5+'+"
I !
I
Drum Rotates 160°
I
J~
I
*
(
120°:950
)
8
a:
220°:830
Master Feed 61mm
: Master Feed
293mm
~ : Master
Feed 84mm
(@) : Master Feed 42mm
The main motor starts rotating in the reverse direction at 30 rpm after the master
eject process is completed.
After the drum rotates 120 degrees past the point where the 2nd drum position
sensor in activated, the original transport motor turns on and starts feeding the
original. The master feed motor turns on and the reverse roller solenoid energizes
when the original has fed 14 mm.
The main motor stops and the clamper remains open when the drum rotates 220
degrees past the point where the 2nd drum poition sensor is activated.
The reverse roller solenoid and the master feed clamper solenoid are de-energized
when the master is fed 61 mm.
After the reverse roller solenoid is de-energized, the master buckles and the
master buckle sensor is activated. At the same time the main motor turns on to
wrap the master around the drum. When the master is fed to the drum, the
master buckle sensor is de-activated, and the main motor stops. The master con-
tinues to feed by repeating the above steps, controlled by the ON/OFF action of
the buckle sensor.
The main motor stops after the master paper is fed 438 mm. At the same time the
cutter motor rotates to cut the master paper.
When the cutter returns to the home position, the master feed motor rotates again
to feed the master paper 42 mm.
2-41
Rev.
8/89