Icom IC-R3 Service Manual

10 - 2
10-3 VOLTAGE DIAGRAM
DET1
CP1
CP2
SBATT+
SBATT–
TANSHI BOARD
MAIN BOARD
CHGOUT
BATT–
DET1
BAT+
R1
0.15
1
2
3
4
5
6
7
8
9
J1
DET2
5V
CONT
1
2
3
4
5
6
7
8
9
WS2
THD
R2
ERT-D2FHL103S
RL1
A-5W-K
D1
1SS53
C1
0.047
BATT+
BATT–
DET2
CP3
CP4
CP5
CP6
Q1
2SB1184Q
D1
SB20-3P
L1
HK-08S050-2010
R19
0.15
Q7
2SJ377
F2
S-N5051
F3
S-N5051
F1
FGB 2A
J1 DC INPUT 8-16V
D6
SB20-03P
C7
0.22
C8
100
C1
0.22
C2
470
R18
1 k
R17
680
C12
470
R15
150 k
R16
47 k
CS
1
ES
2
CT
3
GND
4
INVIN
5
V+
6
SI
7
CD
8
IC2
NJM2360M
C9
0.22
C10
0.001
D2
SB20-03P
C3
470 P
R23
10
C4
470
Q5
DTA114EE
Q6
DTA114EE
R5
10 k
C5
0.01
CP1
DS1
VRPG3349S-734
R6
120 k
R3
560
R21
560
C13
0.001
C6
0.1
IC1
MM1433EVBE
R2
150
C36
4.7
C15
0.001
D3
MA2S111
CHGOUT
C14
0.001U
C22
0.1
C24
0.1
C25
0.001
C26
0.1
C27
0.001
1
2
3
4
5
6
7
8
9
C16
0.15
C23
0.001
BATT+
BATT–
DET1
C28
0.1
C29
0.001
C30
0.1
C31
0.001
C33
0.001
DET2
CONT
THD
5V
C32
0.1
C18
0.1
Q3
UN9214
R11
12 k
R22
56 k
C19
0.1
C20
0.001
R12
2.7 k
R9
220 k
D5
DWA010
Q2
DTA114EE
Q4
DTA114EE
D4
MA132WK
C21
47
Q8
DTC114EE
C34
0.1
C35
0.001
1 2 3 4 5 6 7 8 9
10 11 12
24 23 22 21 20 19 18 17 16 15 14 13
OSC FB
OSC OUT
LED R
LED G
VOUT
ADJ5
VCC
CNT
CFB
CS
BAT2 BAT1
CHGSW REST TP1 TP2 VREF GND1 GND2 ADJ1 ADJ2 ADJ3 ADJ4 THD
R14
100 k
G
B
R
5.4 V
5.1 V
CHG ON: 1.2 V
CHG OFF: 0 V
CHG ON
RL1 ON: 0 V
RL1 OFF: 5.1 V
5.2 V
1.77 ms
3.0 Vpp
0.5 Vpp
CHG OFF

Icom IC-R3 Specifications

General

Brand	Icom
Model	IC-R3
Category	Receiver
Language	English