Sony PS-X7 - Page 31

PS-X6/X7 | | PS-X6/KXK7F PS-X6/X7
3.
System
Control
Circuit
3-1.
Operation
when
POWER
Switch
is
turned
on.
3.
Q206
is
turned
on,
so
a
voltage
is
not
applied
3-2.
«
*
(See
Fig.
3-1)
to
the
@
input
terminal
of
ICI-1
(route
_).
:
The
system
control
circuit
is
composed
of
the
W
following
four
sections:—
1.
When
the
power
switch
(S1)
is
turned
on,
C409
4.
Q207
is
turned
off,
so
a
voltage
is
not
applied
(S5)
is
1.
Flip-flop
for
start/stop
operation
(Q408,
Q409)
charges
up,
and
Q410
is
turned
on
(routes
to
the
©
input
terminal
of
ICI-1
(route
_).
2.
Flip-flop
for
motor
operation
(Q411,
Q412)
&
).
5.
ICl-1
does
not
operate,
and
the
motor
does
not
:
(
3.
Flip-flop
repeat
operation
(Q415,
Q416)
2.
Once
Q410
is
turned
on,
all
three
flip-flops
are
turn.
a
Rerlcep
Osten
eae
pirat
;
;
reset
by
D407,
D406,
and
D409
to
the
follow-
6.
Since
Q406
is
turned
on
(by
the
charge
voltage
i
The
control
ereun
is
thus
responsible
for
turning
ing
stable
states
(routes
:
&
).
if
C405),
0407
will
turn
off,
thereby
prevent:
,
the
motor
and
solenoid
(PM)
on
and
off
to
drive
ie
1.
Q408.....
off,
Q409.....
on
ing
the
solenoid
(PM)
from
being energized.
é
mechanical
system,
and
activates
the
automatic
2.
Q411.....
on,
Q412.....
off
ae
3
lead-in,
return,
and
repeat
operations.
3.
Q415.....
off,
Q416.....
on
ar
,
3.
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Fig. 3-1.
SONY-00830 / DRUCK 15