Ricoh PRIPORT VT 2000 Series Service Manual page 147

28 February '91
7.12 CIRCUIT:
Drum Safety SW
Drum
Rotation SW
VT2300/VT2500 Only
Master
Drum Master Detection Sensor
7.13 INPUT/OUTPUT:
Signal Name
Drum Rotation SW
Drum Master
Detection (LED):
VT2300/VT2500
Only
Drum Master
Detection (Master):
VT2300/VT2500
Only
Ink Supply SOL
Drum Lock SOL:
VT2300/VT2500
Only
Ink Detection
Main Control Board
(104-28)
102-46
+24V
(104-1)
104-39
102-11
(104-17)
COM
102-15
No 1 (104-26)
104-30
No 2 (104-7)
102-12
L-
(104-35)
L+
5V
104-34
K
LED
102-40
A
+12V
C
104-6
E
Main Control PCP
I/O
CN NO
104-30
I
(104-7)
0 104-34
I 104-6
102-16
0
(102-32)
0 102-22
104-9
I
(104-16)
+24V
102-45
(104-6)
Fuse
102-16
102
(102-32)
(5A)
104-3
(102-8)
GND
104-14
(102-18)
(102-22)
104-9
(104-16)
901-1
902-2
102-41
(104-14)
902-3
-12V
102-43
(104-12)
901-2
GND
902-1
Ink Detection Board
( ): VT2100/VT2130/VT2150
Level
When the drum rotation switch is
24V
pressed, the voltage at CN104-30
0V
(CN104-7) is 0V.
When the main switch is turned on, the
voltage at CN104-34 is 12V.
12V
0V
When the master is wrapped on the
drum, the voltage is 0.01 V at CN104-6
0.01V
0V
and 3.5V at TP101.(When no master is
on the drum, TP101 is less than 1.5V.)
When the solenoid turns on, the voltage
24V
0V
at CN102-16 (CN102-32) is 0V.
When the cover open indicator is
displayed and the 1st drum position
24V
0V
sensor is not interrupted, the voltage at
CN102-22 is 0V.
When there is no ink on the ink roller,
0V
-12V
the voltage at CN104-8 is -12V.
2-120
1
SOL Ink Supply SOL
2
5
Color Drum
6
VT2300/VT2500 Only
4
SOL
Drum Lock SOL
3
8
Ink Detecting Pin
7
Description
( ): VT2100/2130/2150