Ricoh C211 Service Manual page 411

3. Electrical Timing
(One Original)
Insert
(1) One Original 'rig'nal
TI :
T2:
T3:
T4:
T5:
T6:
T7:
2nd Drum Position Sensor
o
/ ( n
Master Making Key
(Start Key :830)
Ist Original Sensor
+,: ~
Fluorescent Lamp
1
I
,
t
ADF Drive Motor
T2
t T7
f i
-
,
Original Pressure Solenoid ~
,
I
!--V
I
1
2nd Original Sensor
~
,
425msec ,
~( :
I
!
,Orl Qlnal Feeds
Original Registration Sensor
I
>>;
I
1
T4
Original Transport Motor
a-*
(
)
Master Feed Motor
~ ~-Y;%J 'eeds+
Read Command
~+----J
L
— TA
"(
220°:830
120°:950
)
25mm
Orlglnal
1
1
m'
Exposure Glass
Guide Plate
12mm Orlglnal Stop Posltlon
lf5mm Scanning Posltlon
When
When
starts
originals are inserted in the ADF unit, the 1st original sensor is activated.
the Master Making key (Start key : 830) is pressed, the ADF drive motor
rotating and the pull-out roller and original feed roller feed the 1st original.
At the same time, the original pressure solenoid is energized and the pressure
plate presses the originals against the pull-out rollers.
When the 2nd original sensor detects the original, which is separated by the
separation blade and the original feed roller, the original transport motor starts
rotating and the transport rollers start rotating.
One original is fed and when the original registration sensor detects the original,
the original transport motor stops the original in the position shown above-right.
After the master eject process is finished and the second drum position sensor is
activated, the drum rotates 220 degrees more and then the original transport
motor turns on.
After the original is fed 14 millimeters, master feeding and master making start.
The ADF drive motor and the original pressure solenoid are turned off 425
mseconds after the 2nd original sensor detects the original.
* If the 2nd original sensor is not activated within 2.3 seconds after pressing the
Master Making key (Start key : 830), the Original Misfeed indicator ( A + ~ ) will
start blinkina.
2-3