Tascam 122 Service Manual page 7

l
122
3-1-2 Block diagram
I
F. FWD
IN
REW
IN
STOP
IN
MEMO
REC
IN
AR
PAUSE
IN
PLAY
IN
~3
5
.---­
S
or­
15
~
4
[ """ R
6
/ , - ­
~~
D~
~
14
13
7
9
r1->
6
I
J
.---­
s
0
.J.
)R
6
1'0<
I
.---­
] \.
s
0
....-4
.L
::r
)R
6
J,
' - ­
r -
S 0
..L
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)~
T
J
10
II
12
---<­
16
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M54410P
Fig. 3-2 Block diagram
3-1-3 Input signals and resulting modes
F. FWD
OUT
FAST
OUT
REW
OUT
REC
OUT
PAUSE
OUT
PLAY
OUT
+8
GNO
~
I nput signal
I
REC PAUSE PLAY REW FAST F. FWD
Operating mode
PLAY
L L
H
L
L
L
PLAY mode
STOP L L L L L L
STOP mode
F.FWD L L
L
L H H
F.FWD mode
REW L
L L
' H
H L
REW mode
PAUSE L H L L L L
PAUSE mode
REC and PLAY H L H L L L
REC/PLAY mode
REC and PAUSE H
H L L L L
REC/PAUSE mode
Notes 1. The mode is set at the decaying edge of the input signal waveform.
2. The output retains the ,current mode until an input signal indicating a different mode is received.
3. Output REC remains at Las long as input AR is l.
4. 0 utput R EW remains at Las long as input MEMO is l.
7