Read Sony CFD-575 / CFD-577 Service Manual online
– 13 –
Pin No.
Pin name
I/O
Description
1–4
COM 1–4
O
LCD common drive.
5–28
SEG 5–28
O
LCD segment drive.
29–36
NC
–
Not used (Open).
37
A-GND
–
Connect to ground.
38
KEY 1
I
Control Key input.
39
KEY 2
I
Control Key input.
40
KEY 3
I
Control Key input.
41
KEY 4
I
Control Key input.
42
9K/10K
I
AM tuning interval select terminal.
43
NC
–
Connect to ground.
44
U/L/S
I
Destination select terminal.
45
NC
–
Connect to ground.
46
VRH
–
Power supply (+5V).
47
AVDD
–
Power supply for analog (+5V).
48
INIT
I
Version select terminal.
49
NC
–
Not used (Open).
50
NC
–
Not used (Open).
51
B/L-CON
O
Back light control terminal.
52
REG-CON
O
Power ON/STANDBY control terminal.
53
CD
O
CD B+ ON/OFF control terminal.
54
RADIO
O
Radio B+ ON/OFF control terminal.
55
TAPE
O
TAPE B+ ON/OFF control terminal.
56
TAPE-DUB
O
Dubbing control signal output.
57
D/A-DATA
O
D/A data output terminal.
58
D/A-CLK
O
D/A clock output terminal.
59
D/A-CE
O
D/A chip enable output terminal.
60
A-MUTE
O
Audio mute signal output terminal.
61
CD-OP/CL
I
CD door Open/Close input terminal.
62
C-CLK
O
CD clock output terminal.
63
C-XLAT
O
CD latch output terminal.
64
NC
–
Not used (Open).
65
C-SQSO
I
CD SUB Q signal input terminal.
66
C-SQCK
I
CD SUB Q clock input terminal.
67
RMC
I
Remote control signal input terminal.
68
C-SENCE
I
CD SENCE input terminal.
69
T-A
I
Deck-A play switch input terminal.
70
C-MUTE
I
CD MUTE signal input terminal.
71
C-XRST
O
CD reset signal output terminal.
72
VDD
–
Power supply (+5V).
73
NC
–
Not used (Open).
74
C-DATA
I
CD data input ternainal.
75
NC
–
Not used (Open).
76
C-SCOR
I
CD SCOR input terminal.
77
NC
–
Not used (Open).
78
SURROUND
O
Surround play output terminal.
79
REC
I
REC switch input terminal.
80
NC
–
Not used (Open).
SECTION 5
DIAGRAMS
5-1. EXPLANATION OF IC TERMINALS
IC801 MSM65353-025GS-BK4 (SYSTEM CONTROL)
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