Read Sony ICF-M760L Service Manual online
– 18 –
Pin No.
Pin Name
I/O
Function
4-3.
IC PIN FUNCTION DESCRIPTION
KEY BOARD IC201
µPD17071GB-513-1A7 (SYSTEM CONTROL)
1
INIT OUT
O
Initialize signal output
2
POWER
O
Radio power on/off output
“H”: Radio on
3
MUTE
O
Mute signal output
“L”: Mute on
4
LOCAL/DX
O
LOCAL/DX output
“H”: LOCAL
5–9
KS0–4
O
Key strobe signal output
10–13
K0–3
I
Key return signal input
14
BAND1
O
BAND data signal output
15
BAND2
16
AM IFC
O
Not used (Fixed at “L”)
17
SD
I
Signal Detect signal input
18
GND
–
Ground
19
EO
O
PLL error output
20
VCOL
I
AM VCO (LW, MW) input
21
VCOH
I
FM VCO input
22
VREG0
–
Not used
23
VDD
–
Power supply (+3V)
24
XOUT
O
Connected to the 75 kHz crystal oscillator
25
XIN
I
26
VREG1
–
Not used
27
VLCD0
–
Power supply for liquid crystal display
28
CAP
–
Connected to the power voltage capacitor for liquid crystal display drive
29
CAP1
–
30
VLCD1
–
Power supply for liquid crystal display
31–34
COM0–3
O
Liquid crystal display common signal output
35–47
LCD0–12
O
Liquid crystal display segment signal output
48, 49
–
O
Not used (Open)
50
CE
I
Reduced voltage detection
51
NC
–
Not used (Fixed at “L”)
52
BEEP
O
Buzzer signal output
53
VDET1
I
Reduced voltage warning input
54
INIT IN
55
INIT IN
I
Destination set
56
INIT IN
Receiving
BAND1
BAND2
FM
L
L
LW
H
H
MW
L
H
Tuner OFF
L
L
Initialize pin %¢ pin %∞ pin %§
M760L
L
L
L
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