5-2
CASSETTE
CASSETTE
TAPE
TAPE
Signal
Pin No.
I/O
EJECTED
LOADING
UNLOADING
THREAD-
UNTHREAD-
STOP
FF
REW
PB
REC
ING
ING
CAM
MA-315
O
M
H/M
L/M
H/M
L/M
M
M
M
M
M
IC161
%•
MODE 1
MA-315
I
H
–
–
L
L
H
H
H
H
H
IC161
@ª
MODE 2
MA-315
I
H
–
–
L
L
H
H
H
L
L
IC161
@•
MODE 3
MA-315
I
L
–
–
H
H
H
L
L
L
L
IC161
@¶
MODE 4
MA-315
I
L
–
–
H
H
L
H
H
L
L
IC161
@§
REC PRF
MA-315
I
L
*
1
*
1
*
1
*
1
*
1
*
1
*
1
*
1
*
1
IC161
#º
T REEL
MA-315
I
H/L
H/L
H/L
H/L
H/L
H/L
*
2
*
2
*
2
*
2
IC161
*º
S REEL
MA-315
I
H/L
H/L
H/L
*
2
*
2
H/L
*
2
*
2
*
2
*
2
IC161
&ª
END LED
MA-315
O
L
*
3
*
3
*
3
*
3
*
3
*
3
*
3
*
3
*
3
IC161
@º
T SENS
MA-315
I
*
3
*
3
*
3
*
4
*
4
*
4
*
4
*
4
*
4
*
4
IC161
7
S SENS
MA-315
I
*
3
*
3
*
3
*
4
*
4
*
4
*
4
*
4
*
4
*
4
IC161
6
5-3. SYSTEM CONTROL – MECHANISM BLOCK INTERFACE (MA-315 BOARD IC161)
∗
1.
“L” when erasing protection tab is bent. “H” when not bent.
∗
2.
Pulse of period in proportion to reel rotating speed.
∗
3.
Approx. 2 msec period “H” pulse.
∗
4.
Normally “L” .2 msec period “H” pulse when tape top or tape end is detected.
∗
5.
Hi-Z
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