TC-TX5 - Sony Audio Service Manual (repair manual). Page 8

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Pin No.
Pin Name
I/O
Function
47
FWD
O
Control output to FWD (
·) LED (D851)
48
49
50
51
52
53
54
55
56
Not used (Open)
57
58
59
60
61
62
63
64
65
TYPE I
O
Tape type output
“H”: Normal position
66
TYPE II
O
Tape type output
“H”: High position
67
(TYPE IV)
O
68
Not used (Fixed at “L”)
69
70
71
SOLENOIDE
O
Plunger (PM901) drive output
“H”: On
72
CAP.MOTOR
O
Capstan/reel motor (M902) drive output
“H”: On
73
VCC
Power supply (+5V)
74
VEE
Ground
75
AVSS
Ground for A/D converter
76
VREF
Reference voltage (+5V) for A/D converter
77
HALF
I
Cassette half detection input from S905
78
AMS IN
I
AMS input
79
LIMIT SW
I
Loading detection input from S901
Open: “L”, Close: “M”, COM: “H”
80
PULSE
I
Rotary detection input from PH901
Voltage
Input port
0 V
0.45 V
1.19 V
2.19 V
3.2 V
3.98 V
4.48 V
5.0 V
Pin 4, KEY-X
Open/Close
STOP
PAUSE
FWD
REV
CD
Not key input
§
π
·
ª
SYNC
Pin 3, KEY-Y
POWER
REW
FF
REC
DIRECTION
DIRECTION
ON/OFF
0
)
r
A
a
*
1 Key Input
*
2 Loading Motor
IN
OUT
CLOSE !£
H
L
OPEN !¢
L
H
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