CASSETTE CASSETTE
TAPE TAPE
Signal Pin No. I/O EJECTED
LOADING UNLOADING
THREAD- UNTHREAD- STOP FF REW PB REC
ING ING
CAM
MA-400
O M H/M L/M H/M L/M M M M M M
IC162rh
MODE 1
MA-400
IH ––L L HHHHH
IC162rs
MODE 2
MA-400
IH ––LLHHHLL
IC162ra
MODE 3
MA-400
IL ––HHHLLLL
IC162r;
MODE 4
MA-400
IL ––HHLHHLL
IC162el
REC PRF
MA-400
IL *1 *1 *1 *1 *1 *1 *1 *1 *1
IC162rd
T REEL
MA-400
I H/L H/L H/L H/L H/L H/L *2 *2 *2 *2
IC162od
S REEL
MA-400
I H/L H/L H/L *2 *2H/L*2 *2 *2 *2
IC162of
END LED
MA-400
OL L L *3 *3 *3 *3 *3 *3 *3
IC162wh
T SENS
MA-400
I *3 *3 *3 *4 *4 *4 *4 *4 *4 *4
IC1620
S SENS
MA-400
I *3 *3 *3 *4 *4 *4 *4 *4 *4 *4
IC1629
5-3. SYSTEM CONTROL – MECHANISM BLOCK INTERFACE (MA-400 BOARD IC162)
∗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.
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