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HA-W500RF (EG)/(EK)
2.Schematic diagram
ANT1
C75
0.01u
L2
15nH
Test-1
X4
C8
L1
R49
863 MHz
100 p
15nH
27K
L3
12nH
IC1 7201-15
C5
3
1
1u
VI
VO
C52
TC1
R1
0.01u
1.5-3p
18k
C51
22P
Q1
C20
5094
2P(N)
C3
C1
5p6
3p*
X1
C2
R4
C17
R24
R2
3P*
470
3P*
1K
39k
D1
V809
Test-10
R25
C46
1k
0.1u
C39
1000p
VR2
100k
R30
VR4
1k
5k
C48
100 0 p
C47
R26
100 0 p
1k
!
!
JX1
CHARGE OUTPUT
TERMINAL
S1a SW SPDT
C59
10u
Use of Circuit Diagram
Notes:
1. The thick line (
2. This circuit diagram is the r eference diagram. Cir cuits and constans ar e subject to change without notice for
improvement.
3. Values printed in red show the voltares of each section measured by the tester (inter nal resistance 20 kOhms/V),
with the power switch ON.
4. Parts marked with
designated parts to ensure safety.
4 (No.70270)
C19
R50
C80
R54
0.001u
330
0.01u
330
C874p
C881000p
L9
C84
C76
C81
100p
0.01U
15nH
0.01u
R53
27K
C83
Q9
Q11
10p
5508
5508
C77
1p
*
N750
R56
0
C78
1p
R29
C45
+ C44
100
0.1u
10u
R27
1k
VR3 795.1Mhz
VR3
VR4 791.5Mhz
5k
R28
1k
!
R47 18k
SW SPDT
S1b
Q8
ON
3904
OFF
D2A RED
+
BATTERY
D2B GREEN
-
2.4V
!
R13
1k5
R37300
D3 4148
R38
R46 82K
R42
R35
100k
100k
50K
IC4A
LM393 or
3
5
NJM2903M
+
+
2
6
-
1
-
R40
R41
R36
C73
R39
1M
0.1u
75k
100k
68k
Test-11
) is the B (+) power supply.
(in the shaded area
!
C41
1u
T1
C40
Test-3
1u
L8
0.33uh
C10
C53
10p
56P
26
18
7
2
2
21
20
X3
10.7M
IC2
CXA1538M
R11
13
16
6
5
2
3
9
100
R12
+
330
C27
1U
X2
10.7MHz
R31
+
+
2K2
C26
C28
C29
1U
4U7
33U
R15
C34
C35
0.015u
3k3
0.015u
Test-8
R18
C43
C42
10
D4
4148
+
220 u
0.1u
SPK1
32ohm
IC5
78L06
1
3
VO
VI
SPK2
32ohm
C60
C61
47u
10u
Q6 8550
R434k7
R4510k
R4410k
Q7
3904
IC4B
LM393 or
NJM2903M
7
) are safety parts.When replacing these, be sure to use only the
T2
C22
C21
+
12p
12p
C23
C24
10U
0.1U
C49
7p
C254U7
R14
100K
23
10
11
30
17
4
Test-9
25
8
15
28
27
29
1
R34
2k2
+ C32
0.47u
R33
+
+
2K2
+
R32
VR5
C33
3K3
5K
4U7
C30
C31
C54
0.01U
10U
2u2
Rout
Lout
C55
2u2
R16
3k3
C73
R21
IC3
Test-5
220u
100K
LM4809
Rout
1
2
OUT1
IN1
(C74)
5
3
MUTE
BY PASS
Lout
C32
7
6
OUT2
IN2
220u
Test-6
R23
R22
+
C72
27k
27k
4U7
Test-7
Test-1 High RF in
Test-3 Low RF in
Test-5 R out
Test-6 L out
Test-7 GND
Test-8 VCC
Test-9 STEREO
Test-10 VT
TEST-11 REF V
VR1b
VR1a
100k
100k
+ C38
C36
C37
100u
2U2
2U2
R19
2k7
R20
2k7
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