Read Sony CDX-GT929U / CDX-GT970US Service Manual online
CDX-GT929U/GT970US
41
Pin No.
Pin Name
I/O
Description
54
TEST IN
I
Test mode detect signal input Not used in this set. (Open)
55
RC IN1
I
Rotary commander shift key signal input
56
SYSRESET
O
System reset signal output
57
BUS ON
O
Bus on signal output
58
FSW OUT
O
D/D converter oscillator frequency change signal output
59
B OUT SEL
I
Black out setting signal input “H”: Black out
60
VCC2
—
Power supply pin (+3.3 V)
61
NC
O
Not used. (Open)
62
VSS
—
Ground pin
63
MOTOR ON
O
Front panel motor drive power supply switch signal output
64
MOT+
O
Front panel open/close control signal output (Motor open)
65
MOT–
O
Front panel open/close control signal output (Motor close)
66
CLOSE SW
I
Front panel close detect signal input
67
OPEN SW
I
Front panel open detect signal input
68
P SNSR
I
Drive mechanism gear rotary information signal input
69
USB ON
O
USB power supply oscillator on/off signal output
70
DST SEL1
I
Destination setting pin 1
71
DST SEL2
I
Destination setting pin 2
72
FL ON
O
Fluorescent indicator tube power supply on/off signal output
73
BU IN
I
Backup power supply detect signal input
74
FLD ON
O
Fluorescent indicator tube driver power supply on/off signal output
75
HS EN
O
USB high side switch control signal output
76
HS OC
I
USB high side switch overcurrent detection signal input
77
RE 1
I
Rotary encoder signal input 1
78
RE 0
I
Rotary encoder signal input 0
79
FP IDET
I
Front panel overcurrent detection signal input
80
TEMP TR
I
Temperature detect signal input
81
NC
O
Not used. (Open)
82
QUALITY
I
Tuner noise detect signal input
83
VSM
I
S meter voltage signal input
84
KEY IN0
I
Key signal input 0
85
SP IN
I
Spectrum analyzer signal input from electronic volume
86
RC IN0
I
Rotary commander signal input 0
87
KEY ACK2
I
Rotary commander acknowledge signal input
88
KEY ACK0
I
Key acknowledge signal input
89
NC
O
Not used. (Open)
90
DISP RESET
O
Reset signal output to display IC
91
NOSE SW
I
Front panel detect signal input
92
NC
O
Not used. (Open)
93
DISP CE
O
Chip enable signal output for display IC
94
AVSS
—
Ground pin
95
DOOR IND
O
Sub panel LED power supply control signal output
96
VREF
—
Reference voltage pin for A/D converter
97
AVCC
—
Power supply pin (+3.3 V)
98
DISP SI RX
I
Communication signal input from display IC
99
DISP SO TX
O
Communication signal output to display IC
100
DISP CKO
O
Communication clock signal output to display IC
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