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Gear return spring
Play Mode to Stop Mode (Fig.5-7)
7. lilhen switching to stop mode, solenoid P is
deactivated (in direction (D ) and the cam gear
stopper released (D. The cam gear rotates to
the stopper position (@, O), and the operat-
ing lever is lowered ( (D) bV the operating lever
return spring, thereby restoring the mechanism
to the original stop mode status.
1 Gear return spring
I
C a m q
Flywheel assembly
Capstan
Lever
spring
assembly
Solenoid P
o
Fig. 5-4 STOP + PLAY mode I
5. Once the cam gear engages the capstan gear,
the motor and flywheel rotational momentum
continue to drive the cam gear @ until the
stopper reaches the PLAY position 0). ln
this position, the operating lever is pushed up
@due to the shape of the cam.
6. At the same time, the operating lever shaft
is raised 0,
thereby pushing the HB drive
spring attached to the head base upwards to
force the head base into the PLAY position.
And since the pinch pressure spring is also
elevated, the pinch roller is pressed against
the capstan for start of play.
Flywheel assembly
I
Cam gear
Gear lever
Lever
Solenoid p
assembly
Fig. 5-7 PLAY + STOP mode
Tape Transport Mode Switching
Pins 1, 2, 3 and 5 of IC402 (8A834) are the
input pins for PLAY, STOP, FF and REW. When
any pin is switched to L level, the tape deck
is switched to the conesponding transport mode.
For example, when 52 and S3 are switched on,
pins 1 and 2 of. IC404 are switched to L level,
resulting in the OR gate output pin 3 also being
switched to L level. This is followed by pin 1
of.1C402 being switched to L level, thereby switch-
ing the deck to play mode. Likewise, SB and 54
are switched on for fast forward mode, 52 and Sb
for rewind mode, and 54 and 55 for stop mode.
I
;
Gear return spring
I
Cam gear
Solenoid P
Solenoid P
El
Gear lever
Fig. 5-5 STOP -' PLAY mode tl
return spring
Gear lever
Lever spring
Stooær
Q
o
f 6 1 5 t 4 t 3 t 2 { t t o 9
tc4o2
8A843
1 2 3 4 5 6 7
Fig. 5-8 Tape transport mode switching
Fig. 5-G STOP-+ PLAY mode lll
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