Switch To Playback Mode From Stop Mode; Operation Of Different Parts - Pioneer CT-730 Service Manual

Switch to Playback Mode from Stop Mode
(see Fig.4€)
1. Solenoid P is activated O , ild
the hook of
gear lever (F) is released from stopper (G) O .
2. Operating lever (A) is pressed down onto cam
(C) by operating lever spring (B) O , carn
gear (D) rotates @ and engages capstan gear
(H) o
S o l e n o i d P
' " '
l G t
Fig. 4-8
STOP -+ PLAY operation 1
Switch to Playback Mode from Stop Mode
(see F ig. 4-9)
3. Cam
gear (H)
continues rotating
due
to
capstan gear (H)
()
, ffid
cerm (C) pushes
operating lever (A) up O
4. After
cam (C) passes the point of maximum
Iift,
cam gear (D) disengages capstan gear
(H) @
Fig. 4-9 STOP -+ PLAY operation 2
Switch to Playback Mode from Stop Mode
( s e e F i g . 4 - 1 0 )
5. Operating lever spring (B) forces operating
lever (A)
to
press against cam (C) Q) ,
thereby tending to continue the rotationary
motion of cam gear (D), but since stopper
(G) catches the arm of gear lever (F)
@
,
cam gear (D) stops rotating and operating
lever
(A)
becomes stationary
(playback
mode).
( B )
Fig. 4-10 STOP -+ PLAY operation 3
o Operation of Different Parts
As can be seen in Fig. 4-10, ttre head base
drive pin of operating lever (A) rises during play-
back mode. This pin forces the head base up
through the action of the HB drive spring. The
pinch compressor spring is also lifted at the same
time, forcing the pinch roller into close contact
with the capstan. Furthermore, the brake plate is
lifted
to release the reel brake. Pressure is also
applied to the idler arm, resulting in the TU
idler transmitting drive gear rotation to the TU
reel base (the drive gear being belt-driven by the
capstan motor). (see Fig. 4-11).
Drive gear
TU reel base
T U i dl er
Fi g. 4-1 1 Generati on of take-up t or que
( D )
-
,n,