CMT-C7NT, HCD-C7NT - Sony Audio Service Manual (repair manual). Page 81

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81
HCD-C7NT
Pin No.
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
I/O
I
O
O
O
O
O
I/O
I
I
O
O
O
O
O
I
O
O
O
O
O
O
I
I
I
I
I
I
I
I
I
I
I
I
O
I
I
I
I
I
I
I
Pin Name
PROTECT
PRE-MUTE
PWR-MUTE
REC-MUTE
HP-MUTE
SPK-RELAY
HELP
BVDD
BVSS
KBD-CHK
KBD-DATA
VOL-CE
VOL-CLK
VOL-DATA
LED
FAN-HIGH
HP-IN
IO-RST
PWR-RELAY
MD-PWR
FL-ON
ON/STANDBY
DIMMER
AVDD
AVSS
AVREF
KEY1
KEY2
KEY3
ADJ
DEST1
DEST2
DEST3
DEST4
MODEL1
MODEL2
DEVICE1
DEVICE2
KBD-CLKO
KBD-CLKI
AC-CUT
PCPON
KEY-RM
SIRCS
SCOR
RDS-CLK
IO-DI
IO-DO
IO-CLK
IO-CE
Description
Not used (fixed at “H”)
Pre-amplifier muting signal output
Not used (open)
REC muting signal output
Not used (open)
Speaker relay control signal output
I2C busy signal input/output
Power supply (bus interface)
Ground (bus interface)
PC LINE connector detection signal input
Not used (fixed at “H”)
Volume latch signal output to the sound processor
Volume clock signal output to the sound processor
Volume data output to the sound processor
LED control signal output
Voltage control signal output for the fan
Headphone connection detection signal input
Not used (open)
Power relay control signal output
Power supply control signal output to the MD section
Not used (open)
STANDBY LED control signal output
Not used (open)
Power supply (analog)
Ground (analog)
Reference terminal (analog)
Key input signal from the panel switches
Key input signal from the panel switches
Key input signal from the panel switches
Adjustment mode input (fixed at “H”)
Destination setting terminal
Destination setting terminal
Destination setting terminal
Destination setting terminal
Model setting terminal
Model setting terminal
Device setting terminal
Device setting terminal
Key board clock output (fixed at “H”)
Key board clock input (fixed at “H”)
AC cut off detection signal input
Power on detection signal input from the PC (for PC LINK)
Remote control reception signal or power key detection signal input
Data input from the remote control receiver
CD Q data request signal input
RDS clock signal input
Not used (open)
Not used (open)
Not used (open)
Not used (open)
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