Ricoh PRIPORT VT 2000 Series Service Manual page 134

6.4 CIRCUIT
Printing Pressure Sensor
( ): VT2300/VT2500
6.5 INPUT/OUTPUT
Signal Name
Printing
Pressure Sensor
Printing
Pressure
Solenoid
6.6 ELECTRICAL TIMING
2nd Drum Position Sensor
Paper Feed Solenoid
Pressure Detecting Sensor
Print Counter
T1: When the printing pressure is applied and the printing pressure sen-
sor is not interrupted, the print counter signal is applied for 100 milli-
seconds to increase the print counter and decrease the counter on
the operation panel.
T2: When the printing pressure sensor is not interrupted and the copy
counter on the operation panel indicates "0", the paper feed solenoid
and the printing pressure solenoid turn off to stop paper feeding and
to release the printing pressure.
+5V
CN103-5
(CN102-38)
CN104-25
(CN104-28)
CN103-4 : GND
(CN104-4 : GND)
Main Control PCB
I/O
CN No.
CN104-25
I
(CN104-28)
CN102-31
O
(CN102-14)
T1
+24
CN103-1
CN102-34
(CN102-4)
CN104-6
(CN102-45)
CN102-31
(CN102-14)
Main Board
Level
7.5V
5 m sec
When the pressure is applied the
voltage at CN104-25(CN104-28)
0V
is 0 V.
When the printing pressure
24V
0V solenoid turn on, the voltage at
CN102- 31(CN102-14) 0 V.
2-107
28 February '91
C
SOL
SOL
Description
( ): VT2300/VT2500
Print Counter
Paper Feed SOL
Printing
Pressure SOL
T2