Read Sony CFD-S01 (serv.man2) Service Manual online
36
CFD-S01
• IC801 µPD78947GC-A49-8BT-A (SYSTEM CONTROL) (MAIN BOARD (3/4))
Pin No.
Pin Name
I/O
Pin Description
1, 2
NC
I
Not used. (Open)
3 to 5
VLC2 to 0
O
LCD drive bias voltage input
6 to 9
COM1 to 4
O
LCD drive common output
10 to 26
S1 to 17
I
LCD drive segment output
27
TAPE REC
I
Tape record signal input H: REC
28
NC
I
Not used. (Pull down)
29
DOOR SW
I
CD door open/close switch input L: Close
30
NC
O
Not used (Open)
31
SIMUKE1
I
Model discrimination input
32
SIMUKE2
I
Model discrimination input
33
SIMUKE3
I
Model discrimination input
34
NC
O
Not used (Open)
35
A-MUTE
O
Audio mute output H: Mute
36
FUNC CD
O
CD power control signal output H: CD ON
37
FUNC TC
O
Tape function output H: Tape
38
AVDD
—
Power supply (+3.3 V)
39
BATT-CHK-H
I
Battery voltage check input
40
BATT-CHK-M
I
Battery voltage check input (Not used (Pull down))
41
6V-CHK
I
Power supply 6V check signal input
42
3V-CHK
I
Power supply CD 3.3V check signal input
43 to 45
KEY3 to 1
I
Key input
46
NC
I
Not used (Pull down)
47
AGND
I
Ground
48
RMC IN
I
Remote commander receiver data input (Not used)
49
TC-PLAY
I
Tape play switch input L: Tape play
50
WP/INI
I
Wake-up/Interrupt signal input
51
CD-SUBSYQ
I
CD sub code synchronous signal input
52
CD-BUSY
I
CD BUSY signal input
53
CD-DOUT
I
CD command data input
54
CD-DIN
O
CD status and SUB-Q data output
55
CD-MCK
O
CD command transfer clock output
56
TU-COUNT
I
Tuner PLL serial data input
57
TU-DATA
O
Tuner PLL serial data output
58
TU-CLK
O
Tuner PLL serial transfer clock output
59
TU-CE
O
Tuner PLL chip enable signal output
60
MIC DET
I
Not used (Pull down)
61
TU-ON
O
Not used (Open)
62
CD-R/W
O
CD command read/write signal output
63
CD-LIM_SW
I
CD optical inner limit signal input
64
CD-RESETX
O
CD system reset output
65
P-CON
O
System power control output H: Power on
66
ISS1
O
Not used (Open)
67
ISS2
O
Not used (Open)
68
M-BASS
O
MEGA BASS control signal output H: MEGA BASS on
69
ICO
I
Not used (Pull down)
70
XT1
I
Sub system oscillation input (32.768 kHz)
71
XT2
O
Sub system oscillation output (32.768 kHz)
72
VDD
—
Power supply (+3.3 V)
73
VSS
—
Ground
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