Sony PS-X7 - Page 33

SONY-00830 / DRUCK 17
1 (switch: ON)
START/STOP : 0
switch (S5) i 7 fin version)
start/stop : ‘ (D1 lights up)
flip-flop . ——— (inversion)
(motor rotates)
motor flip-flop
|
REPEAT Der earars a res rea 0
|
|
switch (S6)
repeat
flip-flop
Se
ee
ee
(switch:
ON)
play switch ee ees | See ee 0
(S3) | | pel 1 (switch: ON)
return switch : ( (0)
(S4) | | I ——7—+— 1 (during solenoid operation)
\7
solenoid sl Oe a 0
operation
i
:
I
Ty
1
(0410:
ON)
reset (0410) 0
(S5START) | (S5 STOP)
( lead-in has net) ee operation
completed. has been completed.
Fig. 3-3.
Fig. 3-1. | Operation when the POWER switch is turned on
Fig. 3-2. Operation during auto-start
Fig. 3-3. Operation if START/STOP switch is touched during play
PS-X6/X7 PS-X6/X7 |
Q201 2SC633A
BUFFER AMP
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Q413,414 2SC633A
OC AMP
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C410
0.01
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Q202 2SC633A
SWITCHING
(SAWTQ0TH WAVE’)
PRODUCE
0401~403 1T40
3-
3. Operation if START/STOP Switch (S5) is
touched during Play (See Fig. 3-4)
1. If S5 is touched during play, a negative pulse
iw)
will be generated on the collector of Q404.
This pulse inverts the operation of the Q408/:
Q409 flip-flop circuit. Namely, Q408 is turned
off, and Q409 is turned on.
Once Q408 is turned off, the start indicator
(LED) D1 is turned off.
3. On the other hand, a positive’ pulse is generated
Q403,404 2SC633A
TRIGGER PU see
RATOR
on the collector of Q403, turning Q407 on,
and thereby passing a current through the
solenoid (PM). The auto-return mechanism is
thus activated, and the tonearm is returned to
the arm rest.
404,405 _
IT40
a
Due to the operation of the auto-return
mechanism, the return switch (S4) is turned on
mechanically, thereby discharging C414.
When the tonearm returns to the arm rest, this
switch again turns off.
While C414 is recharging, Q410 is turned on.
Consequently, all flip-flops are reset, and the
motor stops rotating.
The circuitry is thus restored to its original
status.
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0402
0403
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408,409 2SC633A —-Q410_ 2SC633A Q411,412 2SC633A 2SC633A
START/STOP FLIP-FLOP RESET MOTOR DRIVE FLIP-FLOP 4 SWITCHING
R442
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0415,
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: R440 Calg 0415
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Q415,416 2SC633A
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RETURN
R430 C4i2 C413
101 V/50V__1/50V
0410~413 IT40