Ricoh VT3500, Service Manual

Page: 48 / 330

1.7 CIRCUIT
Component
Name
In/Out Main PCB Description
CN No. Signal Level
Upper Pressure
Plate Sensor [A] In 101-23 Signal goes High when the pressure
plate is at the highest position.
Lower Pressure
Plate Sensor [B] In 101-26 Signal goes High when the pressure
plate is at the lowest position.
Full Master
Detection
Sensor [C] In 101-29 Signal goes High when the interrupter
of the pressure plate passes through
the sensor. (Master full detection in the
master eject box.)
Master Eject
Sensor [D] In TP104 Signal goes High when the sensor
detects the master. This is a pulse
signal.
Sensor LED [D] Out 101-16 Pulse signal goes to Low and the LED
lights when the main switch is turned on.
Master Eject
Solenoid [E] Out 103-10 Signal goes Low when the solenoid
turns on.
Master Eject
Motor [F] Out 103-11 Signal goes Low when the motor turns
on.
Pressure Plate
Motor [G] Out 103-12 Signal goes Low when the motor turns
on.
Master Eject
Clamper
Solenoid [H] Out 103-6 Signal goes Low when the solenoid
turns on.
Master Eject
Box Switch [I] In 101-20 Signal goes Low when the master eject
box is installed.
CN101
2
1
3
-24
-23
-22
2
1
3
-27
-26
-25
2
1
3
-30
-29
-28
-20
-21
CN103
-21
-10
-20
-11
-19
-12
-25
-6
5V
GND
5V
GND
5V
GND
GND
FU101
FU102
24V
CN101
-17
-16
-19
-18
5V
5V
LED DRIVE
SOL
M
M
SOL
24V
Main PCB
[A]
[B]
[C]
[D]
[E]
[F]
[G]
[H]
[I]
3 msec
600
µ
sec
5V
3.5V
5V
0V
5V
0V
3V
0V
24V
0V
5V
0V
5V
0V
24V
0V
24V
0V
24V
0V
1 December 1993
2-12