Read Sony MHC-W77AV / STR-W77 Service Manual online
– 9 –
36
VOL IN A
I
Volume encoder input.
37
JOG IN A
I
JOG dial encoder input.
38
RDS CLK
I
Not uset.
39
AUB IN
I
Audio bus output.
40
VSS
–
Ground.
41
RDS DATA
I
Not uset.
42
D 3
I/O
System control data signal input / output.
43
D 2
I/O
System control data signal input / output.
44
D 1
I/O
System control data signal input / output.
45
D 0
I/O
System control data signal input / output.
46
VDD
–
Power supply +5V.
47
SIRCS IN
I
SIRCS signal input.
48
VOL IN B
I
Volume encoder input.
49
JOG IN B
I
JOG dial encoder input.
50
ST FM
O
BAND select output.
51
ST MUTE
O
52
EMG OUT
O
Urgent signal standby output. “H” : standby
53
EMG IN
I
Urgent signal start input. “H”
n “L” : start
57 – 78
P 32 – P 8
O
Segment output to FL501.
79
VG
–
Power supply for fluorescent indicator tube.
80 – 86
P 7 – P 1
O
Segment output to FL501.
87 – 100
14 G – 1 G
O
Grid output for FL501.
Pin No.
Pin name
I/O
Description
FM Receiving
AM Receiving
MUTE
%º pin
H
L
H
%¡ pin
L
L
H
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