Icom IC-R3 Service Manual

174MC
108MC
C982
0.001
C983
0.001
VP
LVC R3V
R875
15 k
Q872
2SK880
330MC
3
2
1 5
4
Q866 XP1114
Q867
DTA123JE
R3V
ATT 108M
CONVC
174M
330M
R1 330
C6
0.001
R2 330
Q1
2SC4081
R3
680
R5
1 k
C9
0.001
C81
0.1
C82
0.1
C8 0.001
C2
0.1
D12
1SV308
C7
0.001
D13
1SV308
C10
0.1
ANT
C5
0.001
D2
1SV308
R7
1 k
L6
56 H
L7 56 H
R8
1 k
C11
0.001
D1
1SV252
L1
3.3 nH
R960
4.7 k
R959
4.7 k
C3
0.1
D909
1SV308
L81 0.27 H
L82 0.33 H
C326
220 P
C332
0.01
C342
0.1
D3 1SV308
D6
MA2S077
R3V
D5
MA2S077
R225
2.2 k
CONVC
Q860
2SA1588
R861 10 k
C978
0.1
R962 1 k
R4
1 k
R6
NTCCM16084BH 472KC
R863
470
R865
22 k
D861
MA2S111
Q859
2SC4081
R862
47 k
D862
MA2S111
R864
1 k
R226
2.2 k
R227 1 k
C327
180 P
C328
0.001
C333
0.0015
C334
0.01
C337
82 P
C338
27 P
C339
150 P
C340
330 P
C341
180 P
C344
330 P
C345
0.001
C346
680 P
C347
0.0022
C371
0.1
C348
0.1
D9 MA2S077
D4 MA2S077
D7
MA2S077
L87
0.47 H
L88
0.68 H
L89 3.3 H L90 3.3 H
C335
0.01
C336
0.039
L85
3.9 H
L86
3.9 H
D8
MA2S077
R229
68 k
R230
3.3 k
HFC
R228
100
R231
2.2 k
C350
0.1
D10 1SV308
Q3
2SC4215 O
Q4
DTA144EE
L91
100 H
B1C
SHIFTC
C372
0.001
C373
0.001
CONVC
R877
470
+3V
C984
0.001
C985
0.001
Q5 DTA123JE
C351
0.1
C349
0.1
+3V
PSTB
Q869
DTA144EE
C993
0.001
C174
0.001
C175
0.001
R878
47 k
Q865
2SA1588
R876
2.7 k
R200
10 k
D201 MA2S
1
L909
0.12 H
C374
0.001
C375
0.001
TVIF5
RXC
B2C
B3C
B2C
B3C
CONLO CONLO
PDA
PGSTB
B2C
RFO
B3C
PCK
R938 15 k
D871 MA2S111
3
2
1
5
4
Q6 XP1114
R937 330
L83
0.47 H
L84
0.47 H
R223
2.2 k
B2
_
3V
B3
_
3V
R224
3.3 k
C329
0.0015
C330
0.01
R944
220
L922
10 nH
R948
10 k
R947 47 k
Q875
UN9214
R222
2.2 k
C321 33 P C322 12 P
C323
82 P
C324
150 P
C331
0.1
C325
100 P
D911
1SV308
C952
470 P
C960
470 P
R942
15
R941
82
C944 470 P
C934 1.5 P
1 4
2
3
5
IC14
UPC2749TB
C389
0.1
C977
470 P
C932 2 P
C933
15 P
L911
6.8 nH
C936 2 P
C935
4 P
L912
8.2 nH
C939 0.001 C941 0.001
C963
1.5 P
C964
3 P
L914
12 nH
D912
MA2S077
LO
3
GND
2
RFI
1
PS
4
VCC
5
IFO
6
IC13 UPC2758T
R961
4.7 k
C945
470 P
CONLO
C946
0.001
D913
MA133
C943 0.001
C947
0.001
R963
1.2 k
R965
1 k
L59 33 nH
C14 2 P
R943
68 k
C4 0.1
C951
0.001
L57 27 nH
L58 39 nH
C13
15 P
C15
18 P
C16 1 P
D11 1SV308
C12
1 P
C953
1.5 P
C959
0.001
FIN
1
GND
2
CLK
3
DATA
4
STB
5
XIN
6
VCC
7
LD
8
BS
9
CP
10
IC15 TB31242FN
Q874
2SC5195
C954
10
C955
470 P
R945
150
C956
15
C17
10 P
R950
56
C950
0.001
LO
3
GND
2
RFI
1
PS
4
VCC
5
IFO
6
IC10
UPC2757T
TRAC
C900
0.01
RFI
C957
0.1
C958
0.1
R946 6.8 k
L908
0.12 H
C305
1.5 P
R939
47 k
D901
MA2
S
C927
120 P
R901 4.7 k
C
0
Q857
2SC4403
R
1
0
D72
MA2S077
D71
MA2S077
C302
180 P
R16
47 k
R3V
C36
0.001
C39
0.001
R17
2.2 k
C38
0.001
D24
MA2S077
D23
1SV286
330M
330M
RFI
SFIOUT
IFIN
SFIOUT
IFIN
C37
0.001
R14
6.8 k
R13
15 k
C30
0.001
C31
0.001
C32
0.001
C28
0.001
R11
150
D22
1SV286
C811
0.001
L60
15 nH
C27
3 P
L61
22 nH
L39
18 nH
D804
1SV308
C33
0.001
6
5
2
4
3
1
Q7
UPA805T
R12
4.7 k
R15
47 k
C401
0.001
R18
120
C35
1 P
R241
2.2 k
L5
18 nH
C808
0.001
L3
12 nH
L4
18 nH
C22
4 P
C23
3.5 P
C24
9 P
C25
1 P
C26
6 P
C19
18 P
C20
18 P
C21
18 P
L2
39 nH
L804
10 nH
D21 1SV308
R804
220 k
D805
1SV308
L807 12 nH
L806 8.2 nH
C812
3 P
C813
1 P
C814
5 P
C815
0.3 P
C816
3 P
R809
2.2 k
D853
MA2S077
L801
4.7 nH
D801
1SV286
D803
MA2S077
L851
3.3 nH
C802
15 P
R852
47 k
C852
10 P
C853
8 P
L852 4.7 nH
C851
0.001
C801
0.001
C803
0.001
R801
100 k
L802
6.8 nH
C818
180 P
C810
0.001
R854
220 k
C807
0.001
L853
0.1 H
D852
1SV286
L805
4.7 nH
D802
1SV286
R807
22
R808
100 k
L855
3.3 nH
C809
15 P
R802
47 k
C859
10 P
R800
27 k
Q851
3SK293
C861 0.001
C858
0.001
L854 5.6 nH
Q801
3SK293
R805
100
C804
0.001
C817
0.001
C805
0.001
L803
0.1 H
C806
0.001
R806
470
R810
2.2 k
D37
1SV308
AGC
AGC
RFO
D854 1SV308
C44
0.01
R116
68
C153
0.1
R71
2.2 k
LO
3
GND
2
RFI
RFO
1
PS
4
VCC
5
IFO
6
IC1 UPC2757T
R256
15
C152
0.001
C
7
0.
0
R255
330
R257
82
D51
MA6S718
C366
0.001
R113
4.7 k
R117
120
C141
0.01
Q9
2SC5231
D35
1SV308
R118
2.2 k
C142 7 P
L41
33 nH
C143
0.001
R119
39
R114
6.8 k
R115
56 k
C57
100 P
C58
0.001
R112
220
R108
220
C856
0.001
C860
0.001
R855
100
C857
0.001
R857
22
R858
100 k
C854
0.001
C855
0.001
R860
2.2 k
L10
47 nH
L9
22 nH
L8
18 nH
C41
2.5 P
C40
12 P
C42
6 P
C395
47 P
C43
47 P
C396
39 P
C74
0.001
L15
5.6nH
R110
100 k
R859
2.2 k
R102
1 k
D33
1SV308
C59
0.001
D851
1SV286
R101
2.2 k
R851
100 k
R850
27 k
D34
MA132WK
C71
0.001
W1
W3
30M
108M
GND
RFO
174M
65M
TRAC
SIFOUT
IFIN
GND
RFI
AGC
30M
108M
RFO
174M
65M
TRAC
RFI
SIFOUT
IFIN
AGC
W2
C48
6 P
L11
15 nH
C46
6 P
L12
10 nH
C55
100 P
C62
0.001
L14
3.9 nH
Q8
2SC5195
C47
3 P
C49
3 P
C51
1 P
C53
0.001
C45
3 P
C54
2 P
C52
1 P
L13
3.9 nH
R109
2.2 K
D36
1SV308
R111
15
C56 3 P
C400
2 P
R107
22
6
470M TRAC 600M 225M 800M
+
+
C200
15
J6 To FM-TV unit
To RF-B unit J3 To RF-B unit J4
1
2
3
2.3 V
ATT
OFF: 0.1 V
1: 1.9 V
2: 2.0 V
3: 2.2 V
4: 2.4 V
1.0 V
f
1150 MHz
1.8 v
1150 MHz
1.1 V
f
470—600 MHz: 3.0 V
470—600 MHz: 1.9 V
600—800 MHz: 1.9 V
800—1150 MHz: 0.8 V
225—330 MHz: 0.4 V
225—330 MHz: 1.2 V
330—470 MHz: 0.8 V
330—470 MHz: 1.6 V
330—470 MHz: 2.7 V
330—470 MHz: 3.0 V
330—470 MHz: 1.9 V
225—330 MHz: 2.6 V
800—1150 MHz: 0.1 V
600—800 MHz: 3.0 V
600—800 MHz: 2.9 V
600—800 MHz: 10.7 V
800—1150 MHz: 3.0 V
470—600 MHz: 2.9 V 470—600 MHz: 0.7 V
f<30 MHz: 3.0 V
f<30 MHz: 1.0 V
f<30 MHz: 0.3 V
TV Mode: 0.9 V
12-5 RF UNIT
COMPLETE VIEW

Icom IC-R3 Specifications

General

Brand	Icom
Model	IC-R3
Category	Receiver
Language	English