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Switch to Stop Mode from Playback Mode
(see Fig. 4-121
1. When solenoid P is deactivated O
, the arm
of gear lever (F) is disconnected from stopper
(G) bV the action of gear lever retum spring
(E) (D
2. Operating lever spring (B) forces operating
lever (A) against cam (C) @
, resulting in
rotation of cam gear (D)
@ and lowering
of the head base drive pin
@
3. Stopper (G) catches the hook of gear lever
(F), stopping the mechanism in the condition
shown in Fig. 4-7 (stop mode).
( B )
Fig.4-12 PLAY -+ STOP operation
Fast Forward Operation
When solenoid F is activated, the drive arm is
moved to the right, and the drive gear on the arm
engages the idler g€il, resulting in rotation of the
TU reel base as shown in Fig. 4-LB (the drive gear
being belt-driven by the capstan motor). At the
same time, the pin on the branch of the drive arm
pushes the brake plate up, thereby releasing the
reel brake.
Brake shoe
Drive gear
TU reel base
Brake plate
Drive arm
Drive arm bracket pin
Rewind Operation
When solenoid R is activated (see Fig. 4-14),
the drive arm is moved to the left, and the drive
gear on the arm engages the supply reel gear result-
ing in rotation of the supply reel base. At the same
time, the pin at the tip of the drive arm pushes the
brake plate up, thereby releasing the reel brake.
Brake plate
Brake shoe
S o f e n o i d R I
I
B r a k e s h o e
Supply reel base
Brake plate
Drive arm
Fig. 4-14 Rewind operation
MS Operation (Music Search)
MS operation involves combination with fast
forward and rewind operations similar to cue and
review operations. At the beginning of MS opera-
tion, power is applied to solenoid p, resulting in
the playback operation outlined in Figs. 4-8, 4-g
and 4-LO being effected in very short period of
time, the head base being tifted by capstan torque.
During this period, power is also supplied to the
PMS solenoid. Although solenoid p is soon re-
leased, the PMS solenoid maintains the head base
through the stopper lever. Since this pMS solenoid
is designed to maintain only the head base, the
pinch roller and TU idler are released. This is
followed by power also being supplied to solenoid
F or solenoid R, resulting in cue or review opera-
tion respectively.
Note:
If MS operation
is started after fast forward
or
rewind
mode has aleady started, solenoid F or
solenoid R is released temporarily, and reactiuated
after a brief period of playbach mode (mechanically
speaking).
Brake plate
Solenoid F
F i g . 4 - 1 3 F a s t f o r w a r d o p e r a t i o n
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