Read Sony CDX-M730 Service Manual online
23
CDX-M730
Pin No.
Pin Name
I/O
Pin Description
50
QUALITY
I
Tuner noise detect signal input from electronic volume (IC305)
51
FM AGC
O
FM auto gain control signal output to tuner unit (TU601)
52
MPTH
I
Tuner multi-path signal input from RDS decoder (IC601) (AEP, UK, E model)
53
VSM
I
S-meter signal input from tuner unit (TU601)
54
VCC
—
Power supply pin (+5 V)
55
AMP ON
O
AMP ON control signal output to power amp (IC903)
56
NS MASK
O
Tuner nose masking signal output (AEP, UK, E model)
57
DDC ON
O
DC-DC converter control signal output
58
LOAD
O
CD loading motor control signal output to loading motor drive (IC2)
59
EJECT
O
CD eject motor control signal output to eject motor drive (IC2)
60
BUS/AUX
O
BUS/AUX audio ground select signal Not used in this set. (Open)
61
OPEN KEY
I
OPEN key signal input (LSW60)
62
NOSE SW
I
Front panel attach/detach detect signal input Connect to ground in this set.
63
VSS
—
Ground pin
64
DETACH SW
I
Front panel detach detect signal input (S1)
65
PWM
I
DC-DC converter OSC frequency count signal
66 to 68
NCO
O
Not used. (Open)
69
FLASH W
I
Flash write-in mode detect signal input
70
I2C SIO
O
I2C serial data signal output
71
I2C CKO
O
I2C serial clock signal output
72
KEY ACK
I
Key acknowledge detect signal input
73
X1A
—
Crystal oscillator (32.768 kHz)
74
X0A
—
Crystal oscillator (32.768 kHz)
75
DAVN
I
RDS data block synchro detect signal input from RDS decoder (IC601)
(AEP, UK, E model)
76
CD ON
O
CD mechanism power control signal output
77
BU IN
I
Back-up power supply detect signal input from bus interface (IC802)
78
CD PACK
I
Servo CPU CD TEXT PACK synchro signal input from servo IC (IC1)
79
RC IN1
I
Rotary commander signal input 1 from remote in jack (CNP803)
80
AD ON
O
A/D converter power control signal output
81
ACC IN
I
Accessory key ON signal input
82
FLSW PW ON
O
Flash write-in jig power control signal output
83
PW ON
O
System power control signal output
84
TEST IN
I
Test mode setting detect signal input
85
RAM BU
I
RAM reset detect signal input
86
HSTX
—
Hardware standby setting input
87
MD2
I
Operation mode setting 2 input Connect to ground in this set.
88
MD1
—
Operation mode setting 1 input Connect to VDD in this set.
89
MD0
—
Operation mode setting 0 input Connect to VDD in this set.
90
RSTX
I
CPU reset input
91
VSS
—
Ground pin
92
X0
—
Crystal oscillator (3.68 MHz)
93
X1
—
Crystal oscillator (3.68 MHz)
94
VCC
—
Power supply pin (+5 V)
95
ILL IN
I
Illumination line detect signal input
96
I DET
I
Front panel current detect signal input
97
MOT –
O
Front panel open/close motor control signal output to motor drive (IC307)
98
MOT +
O
Front panel open/close motor control signal output to motor drive (IC307)
99
CLOSW SW
I
Front panel close detect signal input (SW1001)
100
OPEN SW
I
Front panel open detect signal input (SW1001)
101
CENTER SW
I
Front panel center position detect signal input (SW1002)
102
MODEL SEL
I
Fix/Detach model select setting signal input
103
NCO
O
Not used. (Open)
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