Download Print this page

Pioneer CT-8R Service Manual page 5

Stereo cassette tape deck

Advertisement

Signal Path and other circuits
Same as STOP status. (The PAUSE LED is
illuminated however.)
7. PAUSE Mode Key ON (in PLAY status)
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
Same as STOP status.
Signal Path
Same as STOP status. (PAUSE LED is illumi-
nated however.)
8. REC/PLAY PAUSE 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
Same as STOP status.
Signal Path and other circuits
When pin 9 is high, Q621, Q311 and Q1608 are
all ON. This causes LINE OUTPUT and the head-
phone amp to be muted. If pin 11 also goes high,
Q309 is tumed ON, placing the REC AMP input at
a ground potential. When pins 12 goes low, QB02
turns OFF, stopping the bias oscillator circuit.
Pin 13 goes high, causing the REC IND to illumi
nate.
9. Direction Key ON (in STOP status)
Mechanism
Pin 7 goes low for a 275msec interval, and pin 8
goes high. This causes SOL L to turn ON for only
27[msec, and since SOL R is OFF, the mechanism
goes through a direction operation from FWD-
STOP to REV-STOP.
Motor
Same as STOP status.
Signal Path and other circuits
Same as STOP status.
P i n
N o .
F U N C I I O N '
S T O P
F F
R E W
P L A Y
R E C , / P L A Y
S T O P
P A U S €
P L A Y
REC /PLAY
P A U S E
F W D I R E V F W D I R E V
F w D I R E V
F W O
R E V
FWO R E V
F W D I R E V F w D I R E V F W O I R E V
R M .
L
L
( O F F )
L
n
L
M
L
I M
L
L
L
5
R M .
R
L
( o r '
n
L
M
M L
L
L
H E A D S W
- t
uooE
L
L
L
f,
L
L
H
7
S O L .
L
d
( O F F )
H L
H L
L
L
n
H l t -
H L
I
S O L .
R
-
( o F F )
L H
L ] H
L
L
r
L H
L I H
9
P B . I V U T E
n
( o N )
H
H
L
L
H
H
H
t o
L I N E M U T E
t
( o N )
n
H
L
L
f,
H
L
I I
R E C M U T E
H
( o N )
n
H
H
L
n
H
H
I 2
B I A S
L
( O F F )
L
L
L
n
L
L
L
t ?
R E C
L
( o r '
L
L
L
L
L
H
t 4
R E W
I N D
L
I O F F )
L
n
L
L
L
L
L
I N D
L r o r r )
H
L
L
L
L
L
L
t 6
P L A Y I N D
L , o r a ,
L
L
H
H
L
L
L
P D
o o 6
H
( O F F )
n
H
H
n
L
L
L
t 4
P A U S E I N D
5
Fig. 1-3 PM3001 Output state by mode

Advertisement

loading

This manual is also suitable for:

Ct-9r