Olivetti DF-790, Service Manual

Page: 129 / 155

3NB/3ND/3N0/3NK
2-3-2
Connector Pin Signal I/O Voltage DescrIption
YC3
1
24V1
O 24 V DC
24 V DC power output to DFFCSW
Connected to
the DF front
cover sw and
DF eject
cover sw
2
FRONT COV SIG
I 0/24 V DC
DFFCSW: On/Off
3
EJECT COV
SOURCE
O 24 V DC
24 V DC power output to DFECSW
4
EJECT COV SIG
I 0/24 V DC
DFECSW: On/Off
YC4
1
GND
- -
Ground
Connected to
machine
2
GND
- -
Ground
3
ENG RDY
O 0/3.3 V DC
Ready signal
4
ENG SEL
I 0/3.3 V DC
Select signal
5
ENG CLK
I 0/3.3 V DC(pulse) Serial communication clock signal
6
ENG DI
I 0/3.3 V DC(pulse) Serial communication data signal
input
7
ENG DO
O 0/3.3 V DC(pulse) Serial communication data signal
output
YC5
1
GND
- -
Ground
Connected to
machine
2
GND
- -
Ground
3
24V1
I 24 V DC
24 V DC power input from Machine
4
24V1
I 24 V DC
24 V DC power input from Machine
YC6
1
GND
- -
Ground
Connected to
the mailbox
main PWB
2
GND
- -
Ground
3
GND
- -
Ground
4
5V
O 5 V DC
5 V DC power output
5
24V1
O 24 V DC
24 V DC power output
6
24V1
O 24 V DC
24 V DC power output
7
MT DO
O 0/5 V DC(pulse)
Serial communication data signal
output
8
MT DIN
I 0/5 V DC(pulse)
Serial communication data signal
input
9
MT CLK
O 0/5 V DC(pulse)
Serial communication clock signal
10
MT SEL
O 0/5 V DC
Select signal
11
MT RDY
I 0/5 V DC
Ready signal
Y113480-7 Sevice Manual