Olivetti FAX System M-New Service Manual page 83

3KH
Connector Pin No.
YC1 B19
Connected B20
to the
B21
machine
B22
main PWB
B23
(via inter-
face PWB)
B24
B25
B26
B27
B28
B29
B30
YC3 A1
Connected A2
to the NCU
A3
PWB.
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A15
B1
B2
B3
B4
B5
B6
B10
B12
B13
2-2-4
Signal I/O
TXDMACKn I
D14 I
D13 I
D11 I
D9 I
D7 I
D6 I
D4 I
D2 I
D0 I
NC -
NC -
LINE1 I/O
LINE1 I/O
N.C. -
N.C. -
N.C. -
GND -
GND -
GND -
GND -
GND -
GND -
+5VDC O
+5VDC O
+5VDC O
LINE2 I/O
LINE2 I/O
N.C. -
N.C. -
N.C. -
TELSEL O
EARTH O
TELOFHKn I
DCCONT O
Voltage
5 V DC DMACK transmission signal
5 V DC Data signal D14
5 V DC Data signal D13
5 V DC Data signal D11
5 V DC Data signal D9
5 V DC Data signal D7
5 V DC Data signal D6
5 V DC Data signal D4
5 V DC Data signal D2
5 V DC Data signal D0
- Not used
- Not used
- Line signal
- Line signal
- Not used
- Not used
- Not used
- Ground
- Ground
- Ground
- Ground
- Ground
- Ground
5 V DC 5 V DC supply
5 V DC 5 V DC supply
5 V DC 5 V DC supply
- Line signal
- Line signal
- Not used
- Not used
- Not used
5 V DC TEL SEL signal
3.3 V DC Ground start control signal
(220-240 V specifications only)
3.3 V DC External line off-hook signal
3.3 V DC DC/DC converter control signal
(220-240 V specifications only)
Service Manual
Description
Y108810-2