Riso GR 3770 - Page 84

DESCRIPTION OF PCBs
DRUM CONTROL PCB3
APX(II)-16GR3770
GND1
GND1
Ink sensor (HIGH with ink)
Overflow sensor (HIGH with ink)
+12V
Inking motor (LOW when activated)
+24V
GND1
N.C.
GND1
Det. A sensor (LOW when blocked)
Det. C sensor (LOW when blocked)
+5V
GND1
Drum size data signal 1 SW1
Drum size data signal 2 SW2
Drum size data signal 3 SW3
Drum size data signal 4 SW4
Ink data signal 1 SW5
Ink data signal 2 SW6
CN1
Br
Rd
Or
Yw
Gr
Bl
Vt
Gy
Wh
Bk
Br
Rd
Or
Yw
Gr
Bl
Vt
Gy
Wh
Bk
20pins
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
System PCB2
CN15
CN3 7pins
1
2
3
4
5
6
7
AGND
Temp. det. sensor
+12V
Overflow (HIGH with ink)
Ink sensor (HIGH with ink)
GND1
GND1
GND1
LOW when pressed
GND1
LOW when pressed
GND1
LOW when pressed
Vt
Vt
Vt
Vt
Vt
Vt
Vt
Drum PCB
CN6
6pins
1
2
3
4
5
6
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Br
Rd
Or
Yw
Gr
Bl
Vt
Gy
Wh
Bk
Br
Rd
Or
Yw
Gr
Bl
Vt
Gy
Wh
Bk
CN2
12pins
1
2
3
4
5
6
7
8
9
10
11
12
ADGND
Temp. det. sensor
ADVCC
N.C.
N.C.
N.C.
N.C.
N.C.
GND1
Bottle set switch SW1
Bottle set switch SW2
Bottle set switch SW3
1
2
3
4
5
6
7
8
9
10
11
12
Br
Rd
Or
Yw
Gr
Bl
Vt
Gy
Wh
Bk
Br
Rd
Br
Rd
Or
Yw
Gr
Bl
Vt
Gy
Wh
Bk
21
22
23
24
25
26
27
28
29
30
1
2
3
4
5
6
7
CN4
3pins
1
2
3
LOW in operation
+24V
+24V
M
Inking motor
Wh
Rd
SW
Bottle set
switch SW1
SW
SW
Rd
Rd
Yw
Yw
Gr
Gr
Bottle set
switch SW2
Bottle set
switch SW3
GND1
LOW when pressed
CN7
2pins
1
2
SW
Bottle set
switch
Bl
Bl