Read Sony MDX-C670 / MDX-C670RDS (serv.man2) Service Manual online
– 14 –
Pin No.
Pin Name
I/O
Function
41
NCO
O
Not used (open)
42
PW SEL
I
Power select initial setting
43
RCIN1
I
Input of rotary commander
44
TEST
O
Not used (open)
45
AMPMUTE
O
Power AMP mute control
46
BEEP
O
Output of buzzer control
47
MUTE
O
Output of system mute control
48
VOLCE
O
Output of electronic volume serial chip enable
49
VOLSO
O
Output of electronic volume serial data
50
VOLCKO
O
Output of electronic volume serial clock
51
PLLSI
I
Input of PLL serial data
52
PLLCKO
O
Output of PLL serial clock
53
PLLSO
O
Output of PLL serial data
54
PLLCE
O
Output of PLL serial chip enable
55
SD IN
I
Input of station detector detection
“H”: SD detected
56
ST
I/O
In FM mode, stereo input, monaural output
57
DIMMER
O
Output of dimmer control
58
AD ON
O
Output of A/D converter ON control
59
RAMBU
I
Input of RAM reset detection
60
RESET
I
Input of RESET
“L”: RESET
61
SIRCS
I
Input of remote controller
62
BUIN
I
Input of backup power detection
63
DOORSW
I
Not used (connected to the GND)
64
ACCIN
I
Input of accessory power detection
65
NOSESW
I
Input of front panel remove/attach detection.
66
TELMUTE
I
Input of telephone mute detection
“H”: Mute ON
67
KEYACK
I
Key input acknowledge signal
68
VDD
–
Power supply
69
X OUT
O
Output of main ceramic oscillator (5 MHz)
70
X IN
I
Input of main ceramic oscillator (5 MHz)
71
GND
–
Ground
72
XT OUT
O
Output of sub crystal oscillator (32.768 kHz)
73
XT IN
I
Input of sub crystal oscillator (32.768 kHz)
74
AVDD
–
Power supply for A/D converter
75
AVREF
–
Reference voltage power supply for A/D converter
76
KEYIN0
I
Key input
77
KEYIN1
I
78
KEYSEL
I
Function select pin
79
VSM
I
A/D input of signal meter common to FM and AM
80
DSEL0
I
A/D input of initial setting for the destination
Click on the first or last page to see other MDX-C670 / MDX-C670RDS (serv.man2) service manuals if exist.