Dual 1225 - Manual Start; Stop Switching

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193 180 212 209 183 214 157
Fig. 15 Muting Switch
Cam wheel at zero:
Contacts of muting switch opened
Cam wheel is turning:
Contacts of muting switch is closed
10
Moving the operating switch (33) also re-
leases the start level (208) which is pul-
led towards the main cam by means of ten-
sion spring (207). By this means the shut-
off lever 7190) is moved within the range
of the dog on the platter pinion thus dri-
ving the main cam. The change lever (209)
is also locked. To prevent malfunctions the
operating switch is locked in position du-
ring the start cycle (rotation of the main
aay Just before the main cam Teaches neu-
tral position (at the end of the change cy-
cle) the start lever is pushed clear by the
main cam and thus the operating switch and
change lever are returned to their original
positions. After installation and after mo-
ving the changer the unit should be started
with the tonearm locked on the rest. This
will automatically readjust the shut-off
lever which may have shifted out of posi-
Lions
Manual Start
When the tonearm is swung inwards by hand
the pawl (202) on the shift arm (180) en-
Gages on a square end pin fitted in the
chassis, retaining the shift arm in this
position and thus the idler wheel (152)
in engagement with the platter.
The slide (177) linked to the shift arm
actuates the power switch and sets the plat-—
ter in motion.
On reaching the run-out groove the tonearm
automatically returns to its rest position
and the unit shuts itself off. If, however,
the tonearm is lifted off the record before
completion of play and returned to the rest,
the pin of segment (245) releases the paul
(202). The tension spring then returns the
shift arm to its initial position, opening
the power switch and disengaging the idler
wheel.
Stop Switching
When the operating lever is moved to "stop"
only the starting lever (208) is drawn for-
ward. As a result, the shut-off linkage en-
gages with the main cam. The cam follower
lever remains in stop position. When the
tonearm is on its rest and the operating le-
ver is pushed to "stop", the change lever
must not jam.