Read Sony CFD-44 Service Manual online
– 16 –
Pin No.
Pin name
I/O
Description
70
B/L-CONT
O
Back light control output.
71
A-MUTE
O
Audio mute output.
72
V
DD
–
Power supply. (+5V)
73
REC
I
REC input. “H” : REC, “L” : PB
74
FWD/RVS
I
FWD/RVS input.
75
RADIO
O
Function select signal. (RADIO)
76
C-SCOR
I
SCOR input from IC702 (DSP).
77
CD
O
Function select signal. (CD)
78
PCON
O
Power ON/OFF control.
79
REG OFF
I
Regulator OFF detect.
80
TC-PLAY
I
TAPE play detect.
––––––––––––
81
OSC 1
O
Main clock output. (4.19MHz)
82
OSC 0
I
Main clock input. (4.19MHz)
83
D-GND
–
Digital ground.
84
TX
I
Input clock for TUNER. (32,768kHz)
––––––
85
TX
O
Output clock for TUNER. (32,768kHz)
86
CLOSE-O
O
Loading motor (M703) control output. (Close)
87
OPEN-O
O
Loading motor (M703) control output. (Open)
88
CLOSE-I
I
CD tray IN detector input.
89
OPEN-I
I
CD tray OUT detector input.
90
REG CHK
I
Regulator check input.
91
R-DATA O
O
Data output to IC3 (PLL).
92
R-CONT
I
Data input from IC3 (PLL).
93
R-CLK
O
Clock output to IC3 (PLL).
–––––––––
94
RST
I
System reset input.
95
GND
–
Ground.
96
NC
–
Not used. (Open)
97
VDDL
I
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
98
V
DD
1
I
LCD driving output.
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
99
V
DD
2
I
100
V
DD
3
I
LCD driving output.
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