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There are currently no product reviews.
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The purchased manual is an high-quality scan of the original JVC paper-based Service Manual. The Service Manual includes the Owner´s Manual, so you do not have to buy both of them.
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It paid to find this Service Manual, couldn't find it anywhere else. Exactly what I wanted. Received within 24 hours.
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Complete manual with clear schematic diagrams and printed circuit board layouts of two variants of the headset and the transmitter an old and a new version.
Also shows how the headset and the transmitter is opened and how transmitter and receivers can be adjusted and where to measure.
I had no problems to repair the headset using this service manual.
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Excellent printing quality. A complete and very useful manual with all details.
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This is a great site. I placed my order and by the next am it was available for download. Had some problems with some missing copy on some pages. Once I brought the error to the OMC's attention, the issue was resolved. I'll come back again.
7-4. Printer Pin Arrangement Diagram
Connection RD terminal Pin No. 1 Pin No. 15 Connection Character selective magnet column No.1 13
(Not used)
2
16
Character selective 3 magnet column No.1 2 4
17
14
18
15
3 4
5 6
19 20
16 17
5 6
7 8
21 22
Ribbon shift magnet Electromagnet (+)
Notes: 1. Column numbers match the physical arrangement of the columns on the print wheels. 2. Column numbers are assigned from 1 to 18 from the frame motor side. 3. Pin numbers are assigned from 1 to 27 from the frame motor side. 4. The spark arrestor diode is connected as shown below.
7
9
M
23
Motor power supply (+) Detector power supply (+) Timing signal Detector power supply (�)
8
10
24
Electromagnet (+)
Driver
9
11
25 26
10
12
(Example of compatible diode: 1S2075K or equivalent)
11
13
27
Motor power supply (�)
12
14
Motor power ON/OFF
*1
0.2ms max.
Timing signal
*2 8.0ms min.
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10 T11 T12
TS
T(0)
0.7ms max. 8 0.7ms max. 0.7ms max.
0.7ms max.
80.0ms min.
2.0ms min.
Character selective magnet No.n Ribbon shift magnet
(Print operation) (Normal paper feeding operation)
Typ. 285.7ms
Notes: 1. The signals in must be prepared by the user. 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. �9�
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