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7-4. Printer Pin Arrangement Diagram
Connection
Pin No.
RD terminal
1
(Not used)
2
3
Character selective
magnet column No.1
2
4
3
5
4
6
5
7
6
8
7
9
8
10
9
11
10
12
11
13
12
14
Motor power ON/OFF
Timing signal
Character selective magnet No.n
Ribbon shift magnet
(Print operation)
(Normal paper feeding operation)
Notes:
1. The signals in
2. The pulse is indicated by a dot-dash line (*1) is generated for continuous printing. The next print cycle can start
immediately after the leading edge of the timing signal Ts.
3. As shown by a dashed line (*2), the timing signal may go low at motor power-on or upon reception of a Print command.
M
T0
T1
T2
T3
T4
T5
*2
8.0ms min.
0.7ms max.
0.7ms max.
must be prepared by the user.
— 9 —
Pin No.
Connection
15
Character selective
magnet column No.1
16
13
17
14
18
15
19
16
20
17
21
Ribbon shift magnet
22
Electromagnet (+)
23
Motor power
supply (+)
24
Detector power
supply (+)
25
Timing signal
Detector power
26
supply (–)
Motor power
27
supply (–)
T6
T7
T8
T9
T10 T11 T12
0.7ms max.
0.7ms max.
8
Typ. 285.7ms
Notes:
1. Column numbers match
the physical arrange-
ment of the columns on
the print wheels.
2. Column numbers are as-
signed from 1 to 18 from
the frame motor side.
3. Pin numbers are as-
signed from 1 to 27 from
the frame motor side.
4. The spark arrestor diode
is connected as shown
below.
Electromagnet (+)
(Example of compatible diode:
1S2075K or equivalent)
0.2ms max.
*1
TS
T(0)
2.0ms min.
80.0ms min.
Driver
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