HA-W500RF (EG)/(EK)
(No.70270) 7
RX:IC3
LM4809
1
2
3
4
5
6
7
8
Output 1
Input 1
Bypass
GND
Vcc
Output 2
Input 2
Shutdown
RX:IC4
NJM2903M
LM393
1
2
3
4
5
6
7
8
Output 1
-Input 1
+Input 1
GND
Vcc
Output 2
-Input 2
+Input 2
RX:IC2
CXA1538M
5.Wiring Diagram
6.Block View Inside IC
Ni-Cd
Battery
Black lead
Red lead
Speaker
(Lch)
Red lead
Blue lead
Black
lead
Inside of the
head band
ass'y
Inside of the housing (R)
Antenna
Inside of the
head band ass'y
Natural shielded lead
Green shielded lead
Green
shielded lead
Red shielded lead
Natural shielded lead
Natural shielded lead
Speaker
(Rch)
Inside of the housing (L)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
PLL LPF1
PILOT DET LPF2
PILOT DET LPF2
ST IND/VCO CHECK
Rch OUT
Lch OUT
Vcc
RIPPLE FILTER
AGC AFC 1
AGC AFC 2
GND
TUNE IND
FM IF IN
AM IF IN
BAND SELECT
GND
PLL LPF2
MPX REG
VCO
FM DISCRI
MUTE
AM OSC
AFC
FM OSC
REG
FM RF
AM RF IN
FM RF IN
FE GND
FM/AM FE OUT