Read Sony TA-AV571 Service Manual online
— 22 —
Pin No.
Pin Name
I/O
Function
HALL LED
SIMULATED LED
VOL.B
VOL.A
PROTECT
SIRCS
VSS
SDA.2
SDA.1
SCL
+5V
VSS
FUNC.MUTE
BRIDGE.RY
STANDBY LED
VSS
VSS
S18—S7
VLOAD
S6—S1
NC
NC
DIG1
HALL LED drive signal output
SIMULATE LED drive signal output
Volume encoder signal input
Volume encoder signal input
Protect signal input
SIRCS signal input
Ground
Volume IC signal
Volume IC signal
Volume IC signal
+5V power supply
Ground
Line mute control output
Bridge relay drive signal output
STANDBY LED drive signal output
Ground
Ground
FL segment signal output
–28V power supply for FLUORESCENT INDICATOR TUBE
FL segment signal output
Not used
Not used
FL segment signal output
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59—70
71
72—77
78
79
80
O
O
I
I
I
I
—
I/O
I/O
I/O
—
—
O
O
O
—
—
O
—
O
—
—
O
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