Read Sony HCD-SR1 / HCD-SR2 / HCD-SR3 (serv.man2) Service Manual online
48
HCD-SR1/SR2/SR3
Pin No.
Pin Name
I/O
Description
42
CLKOUT
O
Clock signal output terminal Not used (open)
43
DIP-RST
O
Reset signal output to the power drivers “L”: reset
44
DIP-OCP
I
Protect signal input from the over load detection circuit
45
ST-POWER
O
System power on/off control signal output “H”: power on
46
HP-MUTE
O
Headphone muting on/off control signal output “L”: muting on
47
AU-MUTE
O
Audio line muting on/off control signal output “L”: muting on
48
VIDEO-MUTE
O
Video muting signal output
49
PROG SW
I
SCAN SELECT switch input terminal “L”: SELECTABLE, “H”: INTERLACE
50
FM750
O
Power supply for tuner pack on/off control signal output
51
TUNED
I
Tuning detection signal input from the tuner unit “L”: tuned
52
TUN-DI
I
Serial data input from the tuner unit
53
TUN-CE
O
Chip enable signal output to the tuner unit
54
TUN-DO
O
Serial data output to the tuner unit
55
TUN-CLK
O
Serial data transfer clock signal output to the tuner unit
56
FL-MUTE
O
Reset signal output to the fluorescent indicator tube driver “L”: reset
57
FL-CLK
O
Serial data transfer clock signal output to the fluorescent indicator tube driver
58
BVDD
—
Power supply terminal (+5V) (for bus interface)
59
BVSS
—
Ground terminal (for bus interface)
60
FL-DATA
O
Serial data output to the fluorescent indicator tube driver
61
FL-CS
O
Chip select signal output to the fluorescent indicator tube driver “L” active
62
LED-CS
—
Not used
63
LED-CLR
—
Not used
64
HPSW
I
Connection detection signal input of the headphone jack “L”: no connection,
“H”: headphone connected
65
DF-RST
O
Reset signal output to the digital audio processor “L”: reset
66
PCON3
O
Standby LED control signal output
67
SW2
I
Chucking detection switch signal input
68
F-IN
O
Motor drive signal output
69
R-IN
O
Motor drive signal output
70
DVD_SEL
O
DVD select signal output
71, 72
NC
—
Not used
73
RGB_SEL
O
RGB select signal output
74
AVDD
—
Power supply terminal (+5V) (analog system)
75
AVSS
—
Ground terminal (analog system)
76
AVREF
—
Reference voltage (+5V) input terminal (analog system)
77
NC
—
Not used (fixed at “L”)
78
SW1
I
Loading out detection switch signal input
79
SW3
I
Trigger detection switch signal input
80
AREA1
I
Destination setting terminal
81
SEN2
I
Disc loading detection signal input
82 to 84
KEY0 to KEY2
I
Key input terminal (A/D input)
85, 86
NC
—
Not used (fixed at “L”)
87
MODEL
I
Model setting terminal
88
RDS-DATA
I
RDS serial data input from the RDS decoder
89
DVD-POWER
O
DVD power on/off control signal output “H”: power on
90
STOP
I
System power stop signal input
91
POWER-SW
I
AC power detection signal input
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