SLV-KA177PK, SLV-KA177PL, SLV-KA200PL, SLV-KF300PL, SLV-XA127PK, SLV-XA127PL, SLV-XF247PL - Sony VCR Service Manual (repair manual). Page 17

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5-2
5-3.
SYSTEM  CONTROL  –  MECHANISM  BLOCK  INTERFACE  (MA-308  BOARD  IC401)
Pin No.
MA-308
IC401
MA-308
IC401
MA-308
IC401
@•
MA-308
IC401
MA-308
IC401
MA-308
IC401
MA-308
IC401
MA-308
IC401
MA-308
IC401
MA-308
IC401
7
MA-308
IC401
6
Signal
LOAD
MODE 1
MODE 2
MODE 3
MODE 4
REC PRF
T REEL
S REEL
END LED
T SENS
S SENS
I/O
O
I
I
I
I
I
I
I
O
I
I
EJECTED
5
L
H/L
H/L
L
3
3
CASSETTE
LOADING
H
1
H/L
H/L
3
3
3
CASSETTE
UNLOADING
L
1
H/L
H/L
3
3
3
TAPE
THREAD-
ING
H
1
H/L
2
3
4
4
TAPE
UNTHREAD
-ING
L
1
H/L
2
3
4
4
REW
5
H
H
L
H
1
2
2
3
4
4
STOP
5
H
H
H
L
1
H/L
H/L
3
4
4
PB
5
H
L
L
L
1
2
2
3
4
4
FF
5
H
H
L
H
1
2
2
3
4
4
REC
5
H
L
L
L
1
2
2
3
4
4
1.
“H” when erasing protection tab is bent. “L” 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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