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M S C I R C U T
REEL MOTOR CIRCUIT
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R E C B I A S M U T E M U T E
A U T O R E S E T
C I R C U I T
H E A D
P H O N E S
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MOTOR & MECHANISM PATH
R E A L T I M E C O U N T E R
T A P E R U N C I R C U T T
Signal Path and other circuits
When pin 9 goes low, Q621, Q311 and Q1603
turn OFF, enabling sound to be output from
LINE OUTPUT and at the headphone jack. When
pin 16 goes high, q324 tums ON and the time
constant of the blank detector circuit enters the
PLAY mode. Pins 11, pin 12 and pin 13 are in the
same state as STOP key ON.
3. FF Mode Key ON
Mechanism
Pin 7 goes high and pin 8 goes low. This turns
SOL L OFF and SOL R ON, placing the mecha-
nism in a PAUSE status.
Motor
Pin 4 goes low and pin 5 goes high, placing RM
L in a STOP status and causing RM R to turn.
Signal Path and other circuits
Same as in the STOP status.
4. REW Mode Key ON
Mechanism
Pin 7 goes high and pin 8 goes low. This turns
SOL L OFF and SOL R ON, placing the mecha-
nism in a PAUSE status.
Motor
Pin 4 goes high and pin 5 goes low. This turns
RM L ON and places RM R in a STOp status.
Signal Path and other circuits
Same as in the STOP status.
5. REC/PLAY Mode Key ON
Mechanism
Same as PLAY Mode Key ON.
Motor
Same as PLAY Mode Key ON.
Signal Path and other circuits
When pin 9 is low, Q621, Q311, and Q1603 are
turned OFF enabling output from LINE OUTPUT
and the headphone jack. If pin 11 also goes low,
muting is lifted from the REC AI\4P allowing the
signal to be recorded on the tape. When pins 12
and 13 go high, Q302 is turned ON activating the
bias oscillator and applying erase current to the
erase head and bias to the recording head. The
REC IND (LED) is also illuminated.
6. PAUSE Mode Key ON (in STOP status)
Mechanism
Pin 7 and 8 both go high, turning SOL L and R
OFF and placing the mechanism in a STOp status.
Motor
Same as STOP status.
P A 2 0 0 9
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P M 3 O O 1 ( E X P A N S I O N I C )
CLOCK
CAPSTAN MOTOR CIRCUIT
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