Sony HCD-C7NT Service Manual page 81

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