Read Sony ICF-C1200 Service Manual online
6
ICF-C1200
Pin No.
Pin name
I/O
Description
1-4
COM1-4
O
LCD common output.
5-26
S1-S22
O
LCD segment output.
27
HOLD SW
I
HOLD switch input. ON:L OFF:H
28-30
KR1-3
I
Key return input.
31
VDD
—
Power supply terminal.
32-34
KR1-3
O
Key souce output.
35
POWER
O
Power ON control signal output. ON:L OFF:H
36
BEEP
O
Beep signal output.
37
MUTE
O
Mute signal output.
38
WAKE UP
O
Alarm output at volume control min. ON:L OFF:H
39
LCD
I
LCD check test mode setting input.
40
BAND
O
Band select signal output. AM:H FM:L
41
TEST
—
Not used (Fixed at "L").
42
HOLD
—
Not used (Fixed at "L").
43
INTR1
I
1.9V voltage detection terminal. Radio OFF :L
44
INTR2
I
1.1V voltage detection terminal. All OFF :L
45
—
Not used (OPEN).
46
—
Not used (OPEN).
47
GND
—
Ground terminal.
48
FM IN
I
FM local oscillator signal input.
49
AM IN
I
AM local oscillator signal input.
50
VDD
—
Power supply terminal.
51
D01
—
Not used (OPEN).
52
D02
O
Tuning voltage control output.
53
VREG
—
Regulator output for phase compalator.
54
—
Not used (OPEN).
55
AL SW1
I
ALARM switch input (OFF).
56
AL SW2
I
ALARM switch input (RADIO).
57
AL SW3
I
ALARM switch input (BUZZER).
58
VDET
I
2.1V voltage detection input.
59
ID
I
Destination select input.
60
ID
I
Destination select input.
61
—
Not used (OPEN).
62
SP BEEP
O
Beep signal output.
63
LIGHT
O
LCD back light ON/OFF output.
64
ST/MO
O
Stereo/Mono select output.
65-69
—
Not used (OPEN).
70
RESET
I
Reset signal input.
71
XOUT
O
Oscillator output (75kHz).
72
XIN
I
Oscillator input (75kHz).
73
GND
—
Ground terminal.
74
VDB
—
Capacitor terminal.
75
C1
—
Capacitor terminal.
76
C2
—
Capacitor terminal.
77
VEE
—
Voltage pull-up terminal.
78
C3
—
Capacitor terminal.
79
C4
—
Capacitor terminal.
80
VLCD
—
Voltage pull-up terminal.
SECTION 4
DIAGRAMS
4-1. EXPLANATION OF IC TERMINALS
• IC301 TC9328AF-SR7491
(System control, LCD driver)
(System control, LCD driver)
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