Read Sony CDX-M7810 / CDX-M7815X / CDX-M7850 Service Manual online
42
CDX-M7810/M7815X/M7850
Pin No.
Pin Name
I/O
Pin Description
59
CD ON
I
Servo power supply (+3.3 V) on signal input
60
VCC2
—
Power supply pin (+3.3 V)
61
DISP RESET
O
Display microcomputer reset signal output
62
VSS
—
Ground pin
63
TEST IN
I
Test mode signal input
64
BUSON
O
BUS on signal output
65
SYSRST
O
System reset signal output
66
BUS/AUX
O
BUS audio or AUX-IN change signal output
67
NC
O
Not used. (Open)
68
ACC IN
I
Accessory check signal input
69
ILL IN
I
Illumination check signal input
70
RC IN1
I
Rotary commander signal input 1
71
CDM ON
I
CD driver power supply on signal input
72
NC
O
Not used. (Open)
73
TU ATT IN
I
Tuner attenation Zero cross signal input
74, 75
NC
O
Not used. (Open)
76
Z DET
I
Z-mute signal input “H” input: ATT on
77
EJECT OK
O
Eject ok signal output
78
OPEN REQ
I
OPEN REQ signal input
79
TEMP TR
I
Temperature detection signal input
80
QUALITY
I
Tuner noise detection signal input
81
FP IDET
I
Front panel overcurrent detection signal input
82
VSM
I
S-meter voltage signal input
83
SA IN
I
Spectrum analyzer data signal input
84
KEYIN1
I
Key signal input 1
85
KEYIN0
I
Key signal input 2
86
RCIN0
I
Rotary commander signal input 0
87
KEY ACK2
I
Key acknowledge signal input 2
88
KEY ACK1
I
Key acknowledge signal input 1
89
KEY ACK0
I
Key acknowledge signal input 0
90
DOORIND
O
Sub panel LED power control signal output
91
RAM BU
I
RAM backup signal input
92
FLD ON
O
FL driver power supply on/off signal output
93
FL ON
O
FL power supply on/off signal output
94
AVSS
—
Ground pin
95
DISP CE
O
Chip enable signal output for display microcomputer
96
VREF
—
Reference voltage for A/D convert
97
AVCC
—
Ground pin
98
DISP SI/RX
I
Communication data signal input to display microcomputer
99
DISP SO/TX
O
Communication data signal output to display microcomputer
100
DISP CKO
O
Communication clock signal output to display microcomputer
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