Icom COMMUNICATIONS RECEIVER IC-R3 Service Manual - page 59
DBLOFF
REF
FSET
VP
SHIFT
GND
1stLO
LV1
+3V
PCK
PDA
2ndLO
R3V
CONV
GND
LV3
CONLO
GND
1
2
3
4
PSTV
D64
MA2S077
D63
MA2S077
R128
10 k
C916
0.001
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
R134
10 k
C186
0.001
D65
MA2S077
R130
4.7 k
D66
MA2S077
C188
0.001
C187
2 P
L49
47 nH
L47
12 nH
R135
56
C150
0.001
C168
0.001
C167
0.001
C170
0.001
6
5
4
3
2
1
Q26
FH102
R139
1 k
L54
10 nH
C193
22 P
C196
2.5 P
C198
12 P
C199
39 P
R138
150
R137
68 k
L48
15 nH
L46
6.8 nH
L55
8.2 nH
R132
68 k
L50
15 nH
C190
3 P
C191
5 P
C192
22 P
C194
33 P
L52
15 nH
L53
12 nH
C189
2 P
L51
8.2 nH
C195
3 P
C197
5 P
C211
5 P
C212
2 P
C213
5 P
C214
2.5 P
C215
1.5 P
C216
2.5 P
R129
1 k
R131 47
R133
100
DBL2
DBL1
R3V
C171
0.001
C169
0.001
R140
10 k
D68
MA2S077
3
2
1
4
5
Q27
XP1114
D67
MA2S077
C151
0.001
HV
BGND
VIDEO
AFOUT
AFIN
AFIN
WFM
C925
47
FSET
DBL2
1stLO
VIDEO
AFOUT
R933
150
R934
150
Q855
2SC4081
D122
MA2S077
R124 10 k
C125 0.01
D121
MA2S077
R125
4.7 k
3
2
1
5
4
Q868 XP1114
R123
1 k
R922
100
R923
100
C919
4.7
R122 100
C122
0.01
C121
0.01
Q121
2SC4215
C123
12 P
L121
3.3 H
L122
3.3 H
C126
0.01
C124
12 P
R121
68 k
J5
To FM-TV unit J1
To VCO unit J1
To VCO unit J2
J7
To FM-TV unit
R929
220 k
R202 4.7 k
R201 47 k
C201
0.001
C202
0.001
C203
0.001
DBL1
DBL2
VIDEO
R3V
VIDEO
VIDEO
R3V
B1C
TRAC
B1C
FMTV5
AFIN
FMTV5
AFIN
TRAC
TVIF5
CONV
CONV
VP
REF
REF
SHIFT
LV1
1stLO
+3V
PSTV
LV3
2ndLO
CONLO
FMTV5
VP
REF
SHIFT
VL1
+3V
PSTV
LV3
2ndLO
CONLO
FMTV5
Q202 2SA1588
R940
47
R203
47 k
R204
47 k
Q204
2SA1588
3
2
1
5
4
Q203
XP1213
R200
10 k
D201 MA2S111
R205
2.2 k
L909
0.12 H
Q201 UN9213
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
R904 47 k
R906 150 k
R905
150 k
C307
0.01
D901
MA2S077
C904
0.01
CP6 FS
IC901 M52342FP
C927
120 P
C929
120 P
R901 4.7 k
C926
0.01
1
3
5
4
2
FI901
TSB6321D
Q857
2SC4403
C928
0.001
C902
0.1
C903
0.01
R903
39 k
C912
0.01
C901
0.01
L901
0.56 H
R926
330
Q854
2SC4081
FI905
TPSCC 5.5
R908 390 k
C911
0.47
C906
39 P
R925
1 k
1
2
3
L907
15 H
C918 4.7
C937
4.7
C923
4.7
C938 4.7
C917
4.7
L902
LS-535
C905 82 P
C922
100
R931
18 k
R924 22
R928
1 k
R927 220 k
R907 12 k
C924
47
225MC
RXC
RXC
RX
C273
0.001
225M
470M
470M
30MC
30M
65M
Q856
2SC4081
R936 150
65MC
C988
0.001
C979
0.001
3
2
1
5
4
Q52 XP1114
Q53 DTA123JE
800MC
R935 150
3
2
1
5
4
Q54 XP1114
R932
100
R930
1 k
J3
J2
AFO
INTSP
CLONE
C118
0.01
C381
0.001
1
2
3 4 5
FI2
CFWM450E
600MC
R60
100 k
C103
0.22
C104
0.01
R62
1 k
R82
10 k
R83
10 k
C274
0.001
600M
C116
0.1
C108
470 P
C109
470 P
C110
0.1
RX
IC2 TA31136FN
C95
0.01
C96
0.001
C105
100 P
FI902
SFSCC5.5MC
R910
68
C907
47 P
L903 18 H
Q41
2SC4215
C101 0.01
C97
0.001
L78
3.3 H
C920
10
R958
1.2 k
C102
10
C99 0.001
R37
470
R36
2.2 k
A/V OUT
R35
56 k
R957
2.2 k
R909 2.2 k
C909
10
R72
10 k
R76
10 k
D73
MA2S077
C90
0.01
C92
0.01
R917
10 k
R918
22 k
C908
0.47
L76
2.2 H
C91
18 P
R73
560
C910
470 P
FI4
SFECV13.25MAS
C93
0.01
C961
10
C962
33
D74
MA2S077
L77
1.2 H
C87
0.01
D72
MA2S077
FI3
FL-319
D71
MA2S077
R77
3.3 k
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
1stLO
1stLO
6
IC1 UPC2757T
D902
MA2S077
C234
0.001
R912
4.7 k
C914
0.001
R75
10 k
R256
15
C94
0.01
D906 MA2S077
1
3 4 5 6 7 8
2
FI904
LFSC25N11B0240B
C913
0.001
D907 MA2S077
R78 10 k
C88
100 P
R74
10 k
C152
0.001
C942
180 P
C70
0.001
R54
22 k
R55
3.3 k
Q42
DTA144EE
C106
10 P
C107
0.001
C115
0.001
C114
0.22
R53 10 k
L21
LS-510
R972 15 k
C98
0.001
R34
68
L906
33 nH
C915
0.001
R56
470
R59
1.5 k
CP1
QUAD
C65
0.01
D75
MA132WK
R81
15 k
R85
10 k
C66
0.01
4
5
6
Q44
XP6501
C990 0.1
R969
10 k
C992
0.1
R973
15 k
C113
0.001
R84
15 k
R61
47 k
C111
0.01
C112
0.01
R57 15 k
R64 10
R58
680
WFM
C64 15 P
R179
15 k
R31
1 k
D76 MA132WK
R178
150 k
R86
15 k
C117
0.1
6
5
2
4
3
1
Q46
XP4312
4
5
6
3
2
1
3
2
1
Q45
XP6501
R30
2.2 k
C63
0.001
R177
47 k
D77
MA728
C68
0.01
C69
47
WFM
AM
R29
470 k
C60
0.01
AMAF
C303
0.001
FMAF
AFIN
3
2
1
4
5
6
Q43
XP4312
R974
15 k
C304
0.001
D914
MA132WK
C61
0.001
R28
680 k
R27
15 k
SDET
RSSI
C363
0.001
C67
0.001
C921
0.001
D52
MA6S718
R52
47 k
C931
8 P
R104
NTCCM16084BH103KC
R105
470 k
R103
120 k
R914
4.7 k
R255
330
C930
8 P
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
VSS
1
DATA
2
CLK
3
LCK
4
Q0
5
Q1
6
Q2
7
Q3
8
Q4
9
Q5
10
Q6
NC
NC
Q7
Q8
Q9
Q10
Q11
QE
VDD
R50
10 k
+
+
+
+
Q852
DTA144EE
+
+
+
+
+
+
+
C200
15
+
J4
B1C
B2C
B3C
30MC
65MC
PCK
PDA
EXPSTB
SHIFTC
DBL1
DBL2
225MC
470MC
600MC
11
12
13
14
15
16
17
18
19
20
IC5 BU2092FV
800MC
+3V
1
2
3
4
5
6
7
8
9
10
11
12
DELAY
AFT
AGC
VIF
VIF
GND
GND
GND
SIF
AGC FIL
NBF
AFO
LIM
SW
QIF
VCC
VCC
VCO
VCO
REG
REG
VIDEO
APC FIL
EQ
13
14
15
16
17
18
19
20
21
22
23
24
OSCIN
OSCOUT
MIXOUT
VCC
IFIN
DEC
FILOUT
FILIN
AFOUT
QUAD
IFOUT
RSSI
N-DET
N-REC
GND
MIXIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
R3V
EP2
J1
To LOGIC unit J1
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
+
C262
0.001
EP1
BGND
VP
FSET
GND
GND
AM
WFM
108MC
AFO
330MC
INTSP
TRAC
ATT
174MC
CLONE
DBLOFF
HFC
PGSTB
EXPSTB
SPG
SPG
DCK
DUD
DCK
DUD
+3V
PDA
AMAF
PCK
SDET
PSTB
CONVC
LVC
FMAF
TVIF5
RSSI
RXC
R3V
HV
HV
VIDEO
C261
47 P
S1
UP
E
DN
R169 15
C244 0.001
C176
47 P
C177
47 P
C173
47
+
C172
0.001
J6
To FM-TV unit
To RF-B unit J3
To RF-B unit J4
1
2
3
C994
0.001
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
FM, AM Mode: 0.9 V
WFM: 1.1 V
WFM: 1.8 V
3.0 V
1.0 V
0.2 V
FM, AM Mode: 1.1 V
TV Mode: 3.8V
DBL Through: 1.5 V
DBL2: 3.0 V
DBL2: 0.8 V
DBL1: 2.6 V
DBL2: 2.6 V
DBL2: 2.9 V
DBL1
2.9 V
DBL1: 0.7 V
TV Mode
2.8 V
TV Mode: 4.8 V
TV Mode
4.5 V
TV Mode: 3.3 V
TV Mode: 3.2 V
TV Mode: 2.7 V
TV Mode
2.5 V
TV Mode
4.6 V
TV Mode: 3.3 V
DBL1: 2.5 V
WFM: 1.5 V
WFM: 1.0 V
WFM: 0.7 V
Except WFM: 1.4 V
AM: 1.0 V
WFM: 1.0 V
AM: 1.1 V
AM: 0.7 V
AM: 0.5 V
Except WFM: 1.1 V
Except WFM
1.1 V
LEFT SIDE
RIGHT SIDE
12 - 5
12-5 RF UNIT