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2. Play Mode
When the PLAY button is pressed, the level of
pin 5 1Pf,AY) of IC601 is switched to ,,L" level,
and the level of pin 24 (PINCH SOL) to ..H,'
level. Q603 is turned on and the pinch roller
activated. In
addition, IC60L pin 27 (LINE
MUTE) is opened 416ms after the PLAY button
is pressed, thereby releasing the line mute status
to enable play mode operations to commence.
3. Recording Mode
When a cassette half with its erasure prevention
tabs intact is loaded in the deck, pin B (AR) of
IC601 is switched to '3H" level, thereby enabling
the deck to be switched to recording mode.
When the REC button is pressed, ICO01 pin 4
tnECl is changed to "L" level. pin 20 (nnd) is
also changed to "L" while pin 19 (REC) is open.
As a result, the REC indicator lights up and the
reed relay (RYl01)
is switched off,
thereby
switching the signal path to the recording circuit.
And the IC601 pin 24 (PINCH SOL) changed to
('H"
level, tape transport is commenced,. Pin 22
(BIAS OSC) is opened 52ms after the REC button
is pressed, thereby activating the bias oscillator.
Pin 27 (LINE MUTE) and pin 28 (REC MUTE)
are opened 416ms after the REC button is pressed,
thereby releasing the line mute and recording mute
status to permit recording to start.
4. Fast Forward Mode
When the FF button is pressed IC601 pin 8
(TF) is changed to "L"
level, followed by pin
26 (FF SOL) being changed to "H" level 416ms
later. Q601 is thus turned on, activating the FF
solenoid to start fast forward operation.
5. Rewind Mode
When the REW button is pressed, IC601 pin
7 (RED
is changed to "L" level, followed by pin
25 (REW SOL) being changed to "H" level 416ms
later. Q602 is thus turned on, activating the REW
solenoid to start rewind operation.
6. Pause Mode
The pause mode in this deck is released by
pressing the PAUSE button. The pause mode is
not released by pressing the PLAY button during
play/pause mode, or the REC button during re-
cording/pause mode. Note, however, that pressing
the PLAY button during recording/pause mode
switches the deck to play/pause mode, and pressing
the REC button during play/pause mode switches
the deck to recording/pause mode.
If the PAUSE button is pressed during stop mode,
pin 2 (PAUSE) and pin 21 (PAUSE) of IC601 are
both changed to "L" level, thereby lighting up the
PAUSE indicator.
When both the PLAY
and
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