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5-3. SYSTEM CONTROL – MECHANISM BLOCK INTERFACE (MA-323 BOARD IC161)
Signal
Pin No.
I/O
EJECTED
MA-323
CAM
O
Hi-Z
IC161*£
MA-323
MODE 1
I
IC161*¢
MA-323
MODE 2
I
IC161*∞
MA-323
MODE 3
I
IC161*§
MA-323
MODE 4
I
IC161*¶
MA-323
C IN REC PRF
I
IC161%∞
MA-323
T REEL FG
I
H/L
IC161*•
MA-323
S REEL FG
I
H/L
IC161*ª
MA-323
O
T/S LED
*4
IC161&¢
(O.D)
MA-323
CAP RVS
I
IC161(£
MA-323
T SENS
I
*4
IC161!™
MA-323
S SENS
I
*4
IC161!¡
∗1. Uncertainty.
∗2. "L" when erasing protection tab is bent, "H" when not bent.
∗3. Pulse of period in proportion to reel rotating speed.
∗4. Approx. 2 msec period "H" pulse.
∗5. Pulse at tape running.
TAPE
CASSETTE CASSETTE
THREAD- UNTHREAD- STOP
LOADING UNLOADING
ING
H
L
H
H
L
L
*1
H
L
L
*1
L
L
L
*1
L
H
H
*1
H
*2
*2
*2
H/L
H/L
H/L
H/L
H/L
*3
*4
*4
*4
L
H
*4
*4
*6
*4
*4
*6
TAPE
PB •
FF
REW
PB
PAUSE
ING
L
*7
*7
*7
*7
*1
H
H
H
H
H
H
H
L
*1
*1
H
L
L
L
*1
L
H
H
L
*2
*2
*2
*2
*2
H/L
H/L
*3
*3
*3
H/L
H/L
H/L
*3
*3
*3
*3
*4
*4
*4
*4
*4
L
H/L
H
L
H
*6
*6
*6
*6
*6
*6
*6
*6
*6
*6
∗6. Normally "L". 2 msec period "H" pulse when tape top or tape end is detected.
∗7. When transition to UNLOADING direction: L.
When transition to LOADING direction: H.
When CAM motor is stopped: Hi-Z.
× 2
SLOW
CUE
REVIEW
REC
*7
*7
*7
*7
*7
*7
H
H
H
H
L
H
L
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
*2
*2
*2
*2
*2
*2
*3
*3
*3
*3
*3
*3
*3
*3
*3
*3
*4
*4
*4
*4
*4
*4
H
H
H
H
L
H
*6
*6
*6
*6
*6
*6
*6
*6
*6
*6
*6
*6
REC •
PAUSE
*7
H
L
L
L
*2
H/L
H/L
*4
H
*6
*6
- Quick Links:
- General
- Error Codes
- Mechanical Adjustments
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