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Procedure:
First turn the mode selector (8) to SLIDE and connect (via UHER Lead
K 911) the SLIDE socket of the SG 631 LOGIC to the remote control
socket of the slide projector. Then actuate the RECORD @ , PAUSE ®
and START (13) keys, one after the other. When the projector has been
switched on and the PAUSE key @ has been disengaged to start tape
motion, press the SLIDE pushbutton ® to record the first control pulse
which, in turn, will project the first slide picture into view. After this point,
the SLIDE pushbutton © should be pressed during playback of the
sound track whenever the slide is to be changed - that is, whenever
a control pulse is to be recorded on the tape to trigger the projector to
change the slide automatically during subsequent playback. When all of
the slides have been run through, rewind the tape and return the slide
magazine to its starting point once more. Now your SG 631 LOGIC can
take over the presentation of your slides, automatically operating the
slide projector. But remember: the mode selector must be in DIA
position.
All of the recorded control pulses may be erased without affecting the
sound track if the tape is played through with the mode selector set
to DIA and the RECORD key actuated.
6.4 Recording with UHER Telephone Adapter A 261
UHER's galvanic Telephone Adapter A 261 should be connected to the
RADIO socket of the SG 631 LOGIC. Connecting the adapter to your
telephone is a matter for the postal authorities (or telephone company).
During record, the mode selector may be set at either MONO 1 or
MONO 2. It is advisable to make a "test" telephone call in order to
make a record level test, marking or remembering the setting of the
level control. The procedure for making the recording itself is described
in sec. 4.
48
6.5 Erasing Only
Whenever the recorder is operating in record mode, any previous re-
cording on the tape is automatically erased. For erasure only the SG 631
LOGIC should be operated just as for record but with the master con-
trol (5) in its middle click-position at which all input sources remain out
of circuit.
6.6 Changing Tape Head Assembly Z 401 or Z 411 (See Fig. 6)
The procedure is as follows:
1. Switch the SG 631 LOGIC to STOP so that the tape may be lifted out
of the threading slot.
2. Withdraw the front cover cap.
3. Loosen the knurled nuts (A) by rotating to the left, and remove.
4. Pull tape head mount (B) straight up and off.
5. Push the replacing tape head mount down into place; then secure
it with the knurled nuts, rotating them to the right.
6.
Replace front cover cap.
6.7 Azimuth Adjustment of Playback Head
the playback head may be tilted, within limits, to the left or right of its
normal perpendicular position so that the SG 631 LOGIC may also play
tapes recorded on machines with non-standard record head positions.
The adjustment should be made with a non-magnetizable screwdriver,
until achieving the best reproduction of high frequencies. Before
adjusting the azimuth, however, make certain that the playback head
surface is free of deposits of tape coating or dust. As poor correspon-
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