Icom IC-R3 Service Manual page 59

12-5 RF UNIT
1.0 V 2.3 V
C2 D2 C10 L6
0.1 1SV308 0.1 56 H R1 330
ANT
ATT
D12 C81 C6 OFF: 0.1 V
R7 C5
1SV308 0.1 0.001 1: 1.9 V
1 k 0.001
L1 R8 2: 2.0 V
C9
3.3 nH 1 k D13 3: 2.2 V
0.001
C11 1SV308 4: 2.4 V
0.001 f 1150 MHz L7 56 H R2 330
D909 1.8 v R3
1SV308
680
D1
R959
1SV252 R4 R5
R960 4.7 k C7 C82 C8 0.001
1 k
4.7 k C963 0.001 0.1 Q1 1 k D4 MA2S077
1.5 P C3 2SC4081
0.1
C932 2 P C934 1.5 P C936 2 P
R6
NTCCM16084BH 472KC
R3V
C933 C935 C964
15 P 4 P 3 P
R862
R864
47 k D5
L911 L912 L914 1 k C332
6.8 nH 8.2 nH 12 nH C977 MA2S077 0.01
470 P
Q859 R861 10 k CONVC
2SC4081 C335 C336
R225
D861 0.01 0.039
2.2 k
C944 470 P R865 MA2S111
D862
22 k L86
R962 1 k MA2S111 L85
3.9 H
C342 3.9 H
C939 0.001 C941 0.001 6
C978 0.1
4 1 D911 Q860
0.1
1SV308 2SA1588 R863
5 470
3 2 C389 D6 C326
IC14 0.1 L82 0.33 H 220 P
D3 1SV308 L81 0.27 H MA2S077
UPC2749TB
R965
1 k C321 33 P C322 12 P R222
2.2 k
IC13 UPC2758T R961
C945 4.7 k
3 4
LO PS 470 P
2 5
GND VCC
1 6
RFI IFO
C323 C324 C325 C331
R963 C946 D912 C4 0.1
82 P 150 P 100 P 0.1
1.2 k 0.001 MA2S077
f 1150 MHz
1.1 V
CONLO
D805 L806 8.2 nH L807 12 nH
1SV308 470—600 MHz: 2.9 V 470—600 MHz: 0.7 V
R804
C813 C815 220 k
C808 C811
1 P 0.3 P L804
470—600 MHz: 3.0 V 0.001 0.001
10 nH
Q801
C812 C814 C816 470—600 MHz: 1.9 V
3SK293
3 P 5 P 3 P
L803 R806 C809
0.1 H 470 15 P L805
4.7 nH
D803 C801 L802 C803
C802
MA2S077 0.001 6.8 nH 0.001
15 P C806 D802
0.001 R807 R808 1SV286
R800
22 100 k
27 k R802
R809 L801
47 k
2.2 k 4.7 nH D801
R801
1SV286 C804 C817 C805 R805 C807 C810
100 k
0.001 0.001 0.001 100 0.001 0.001
D853
MA2S077
C818
600—800 MHz: 2.9 V
180 P L854 5.6 nH C861 0.001 D854 1SV308
R854 Q851
220 k
C853 600—800 MHz: 3.0 V 3SK293 C858
C851 L853
L852 4.7 nH C859
0.001 8 P 0.1 H 0.001 L855
600—800 MHz: 10.7 V 10 P
3.3 nH
C852
600—800 MHz: 1.9 V
R859 10 P R858
C856 D852
2.2 k R850 R857 100 k R860
0.001 1SV286
27 k 22 2.2 k
L851 R852
D851
3.3 nH 47 k
R851
1SV286 R855 C857 C860
100 k C854 C855
0.001 0.001
0.001 0.001 100
L8 L9
D33
18 nH 22 nH C395 C396 C43
1SV308
D34 47 P 39 P 47 P
R101
W3 MA132WK
2.2 k C40 C41 L10
C42
W2 12 P 2.5 P 47 nH
R102 6 P
1 k
W1
C59 C71
0.001 0.001 C74
0.001 R110
100 k
L15
5.6nH
800—1150 MHz: 0.8 V
R109
C45 C47 C49 L13 C53 L14 2.2 K
3 P 3 P 3 P 3.9 nH 0.001 3.9 nH
800—1150 MHz: 3.0 V
Q8
30M C54
C46 C48
108M 2SC5195
6 P 6 P 2 P
GND L12 C51 C52
L11
RFO 10 nH 1 P 1 P
15 nH
174M C62 C55 R111
65M 0.001 100 P 15
TRAC
GND
RFI
AGC
SIFOUT
1
2
IFIN
3
LEFT SIDE
R3V
Q866 XP1114
174M 4
C982
0.001
ATT 108M 5
C983
0.001
CONVC 330M
Q4 Q867
+3V
DTA144EE DTA123JE
L89 3.3 H L90 3.3 H R227 1 k
B1C
C984
C372 0.001
C371 Q865
0.001
0.1 Q5 DTA123JE R877
C346 D7 2SA1588
C344 470
680 P MA2S077 HFC CONVC
330 P C345 C347
0.001 0.0022 R878
C349 C985
C373 47 k
R229 0.1 0.001
C333 C334 L87 L88 D8 L91 R231 0.001
68 k Q869
0.0015 0.01 0.47 H 0.68 H MA2S077 100 H 2.2 k
DTA144EE
SHIFTC
C350
C338
C337 R230 0.1 D10 1SV308
82 P 27 P 3.3 k PSTB
C348
R226 0.1
f<30 MHz: 3.0 V
2.2 k Q3
C340 C341
C339 2SC4215 O
330 P 180 P f<30 MHz: 1.0 V
150 P f<30 MHz: 0.3 V
R228 C351
C327 C328
100 0.1
180 P 0.001 D9 MA2S077
C329 C330 Q6 XP1114
R223 R224
0.0015 0.01
3.3 k B2_3V 4 3 B2C B2C
2.2 k
L83
L84 2 C374
0.47 H
0.47 H 0.001
B3_3V 5 1 B3C B3C
C375
0.001
CONLO
C943 0.001 C947 R941
D913
0.001 82
MA133
C960
R944
470 P
C952 220
R942 470 P
15
D804
L922
1SV308 C953
10 nH IC15 TB31242FN
1.5 P
R943 1
FIN
68 k 2 GND
3 CLK
4
C950 DATA
5
C951 0.001 STB
R810
0.001
2.2 k Q874
R950
2SC5195
56
D11 1SV308 L57 27 nH
L58 39 nH L59 33 nH
AGC
D35 C14 2 P C16 1 P
1SV308 RFO
D37
C12 C13 C15
1SV308 D21 1SV308
1 P 15 P 18 P
R116 C44
R115 68 0.01 330—470 MHz: 0.8 V
56 k
R118
L41 2.2 k
C143 C28 R11
33 nH Q7
0.001 C142 7 P 0.001 150
R114 UPA805T
6.8 k
R119 225—330 MHz: 2.6 V C19 C21 L3 L4 L5 L39 4
39 18 P 18 P 12 nH 18 nH 18 nH 18 nH
5
225—330 MHz: 1.2 V
C23 C27 6
C25
C20 3.5 P
1 P 3 P
225—330 MHz: 0.4 V Q9 18 P 330—470 MHz: 3.0 V
2SC5231 R241
2.2 k L2
C141 R117
C22 C24 C26 R14
0.01 120 39 nH
4 P 9 P 6 P 6.8 k
R13 C30
330—470 MHz: 1.6 V 15 k 0.001
330—470 MHz: 2.7 V
C31
0.001
C57 C58 R112 R108
100 P 0.001 220 220
C56 3 P
R107
D36
C400
22 1SV308
2 P
800—1150 MHz: 0.1 V
R113
4.7 k
D51
C366 MA6S718
0.001
RFO
30M
108M
174M
65M
TRAC
AGC
RFI
SIFOUT
IFIN
3 174MC
2
Q872
1 108MC
2SK880
330MC
R875
15 k
C993 R876
0.001 2.7 k
C174 C175
0.001 0.001
Q202 2SA1588 R204
47 k
R203
47 k
TVIF5 R201 47 k
+3V
D201 MA2S111 R202 4.7 k
RXC 1 5
C200 R200
2
15 10 k
C201
0.001 3 4
Q201 UN9213
Q203
R937 330 XP1213
RFO
R938 15 k
CP6 FS
R940 C928 R906 150 k
B2C R939 L909
47 0.001
47 k 0.12 H
TV Mode: 3.8V
Q857
R904 47 k
2SC4403
B3C
C305 C901
1.5 P C900 0.01
0.01
C912 R903
C903
C929 0.01
CONLO FI901 39 k 0.01
L908 C927 120 P R905
TSB6321D
PGSTB 0.12 H 120 P 150 k
1 3
PDA
2
C904
R947 47 k
TV Mode: 0.9 V C926 4 5 IC901 M52342FP 0.01
C902
0.01
0.1
Q875 1 24
R948 DELAY EQ
2 23
UN9214 10 k AFT APC FIL
R901 4.7 k 3 22
L901 AGC VIDEO
4 21
0.56 H VIF REG
5 20
D871 MA2S111 D901 VIF REG
6 19
PCK IC10 MA2S077 GND VCO
7 18
UPC2757T GND VCO
8 17
R946 6.8 k GND VCC
CP 10 1 6 9 16
RFI IFO SIF VCC
BS 9 2 VCC 5 10 AGC FIL QIF 15
R945 + GND C307 11
LD 8 C959 C957 C958 PS 4 NBF SW 14
150 3 LO 0.01 R909 2.2 k 12 13
VCC 7 0.001 0.1 0.1 AFO LIM
XIN 6
R3V C910 R917
+ + 470 P 10 k
C909
+ C302
C954 C955 C956 10 C962 + C961 +
180 P
10 470 P 15 33 10
C908
0.47
RFI
R72
10 k FM, AM Mode: 0.9 V FM, AM Mode: 1.1 V R76
10 k
FI3
D71 L76 R73 C92
FL-319 R36
MA2S077 2.2 H 560 0.01
C17 2.2 k
10 P
330—470 MHz: 1.9 V C90
C91
0.01 D73
18 P C95
C401 MA2S077
WFM: 1.1 V WFM: 1.8 V 0.01
0.001 TRAC
C87 L77 FI4 C93
0.01 1.2 H SFECV13.25MAS 0.01
C39
R16
0.001
R15 47 k D74
3 D72 R77
47 k C88 MA2S077
MA2S077 3.3 k R74
2 R18 C33 C35 C36 C37
100 P 10 k
120 0.001 0.001
1 1 P 0.001
R71 R75
D24
2.2 k 10 k
MA2S077
L61 R78 10 k
R12 D23
22 nH
1SV286 R17
4.7 k C94
2.2 k
D22 L60 0.01
1SV286 15 nH
C32
C38
0.001
0.001 D907 MA2S077
SFIOUT C913
0.001
IFIN D906 MA2S077
330M
C942
180 P
C153 IC1 UPC2757T C234 R912
FI904
0.1 0.001 4.7 k L906
1 6 LFSC25N11B0240B
RFI IFO
2 VCC 5 33 nH
GND 1 2
3 PS 4
LO
D902 C914
C70 C930
C152 R914 0.001 3 4 5 6 7 8
MA2S077 8 P
0.001 0.001 4.7 k
RFO
R256
R255 15 R257
330 82
RFI
SFIOUT
IFIN
1stLO
CONV
VP
REF
VIDEO
SHIFT
VL1
C244 0.001 R169 15
+3V
PSTV
LV3
TVIF5
2ndLO
CONLO
FMTV5
Q204 C203
2SA1588 0.001
DBL1
TV Mode: 4.8 V
C150
0.001
R205 R923
2.2 k
100 TV Mode
2.8 V R133
DBL1: 0.7 V 100
Q855 L50
R130
TV Mode: 3.3 V 2SC4081 15 nH
4.7 k
C202
R929
0.001 Q26
220 k C168
DBL1: 2.5 V FH102
R922 0.001 R132
100 C919 D65 C186 68 k 4
L49
4.7 MA2S077 0.001
C937 47 nH 5
R907 12 k R933
4.7 R934
R131 47
R930 150 150 6
TV Mode: 3.3 V C918 4.7 C187
1 k DBL2: 3.0 V DBL2: 0.8 V
2 P
R924 22
R926 L907
330 15 H R927 220 k
TV Mode TV Mode
C923 D66 L47 R137 L51
4.6 V R931 4.5 V C188 C994
Q854 4.7 MA2S077 12 nH 68 k 8.2 nH
18 k 0.001 0.001
C917 2SC4081
C938 4.7
4.7 R135 C189 C170 R138
R134
56 2 P 0.001
Q856 10 k 150
DBL2
TV Mode: 2.7 V TV Mode: 3.2 V DBL2
2SC4081
R928 TV Mode
FI905
R925 1 k 2.5 V
TPSCC 5.5
1 k
WFM: 1.5 V
R908 390 k C905 82 P
L902 R932 R122 100
C122
LS-535 + C911 100 L121
C906 0.01
0.47 3.3 H C123
C124
39 P 12 P C125 0.01
C907 R957 R121 12 P
47 P 2.2 k 68 k
R910 C121
68 0.01
L903 18 H L122
D121
WFM: 0.7 V 3.3 H
Q121 MA2S077
FI902 2SC4215
R918
SFSCC5.5MC
22 k
C126
D122
0.01 Except WFM: 1.4 V
MA2S077
RX
+
C96 L78 C99 0.001 C102 C103
IC2 TA31136FN Except WFM R82 R83 C118
0.001 3.3 H 10 0.22 R62 1.1 V
10 k 0.01
16 1 1 k 10 k
C101 0.01 MIXIN OSCIN
R35 15 2
GND OSCOUT
56 k C97 14 3 FI2
N-REC MIXOUT Except WFM: 1.1 V
0.001 13 4 CFWM450E
N-DET VCC C116
12 5 1 2
RSSI IFIN
11 6 0.1
IFOUT DEC D76 MA132WK C117
1.0 V 3.0 V 10 QUAD FILOUT 7 3 4 5 R124 10 k
9 AFOUT FILIN 8 0.1
C109
R60
Q41 C108 470 P Q46
0.2 V C106 100 k R84
2SC4215 470 P XP4312
C105 10 P CP1 D75 15 k
C107
100 P QUAD MA132WK 4 3
R54 R55 0.001 R86
22 k 3.3 k R59 R61 WFM: 1.0 V R85 15 k 5 2
C110
47 k
C98 R37 1.5 k 0.1 10 k
R34 R81 6 1
Q42
68 0.001 470 C111 15 k
DTA144EE 0.01
R57 15 k R64 10
R56
C112
470
L21 0.01 AM: 0.7 V
C66 R31
LS-510 C114 R58
0.01
C115 0.22 C113 680 1 k R177 C63
0.001 47 k 0.001
0.001
AM: 1.0 V
C992 R973
C65
0.1 15 k 6 5 4 6 5 4
0.01
C990 0.1
C915 R972 15 k Q44
XP6501
0.001 R53 10 k
6 5 4 AM: 0.5 V
R969 1 2 3 1 2 3
R104 10 k
C931 R52 R103
NTCCM16084BH103KC Q45
8 P 47 k 120 k
XP6501
D914
1 2 3 R29
MA132WK
470 k
Q43
R105
XP4312
470 k C304 R974 C303
C60 R27 R28 C61
D52 0.001 15 k 0.001
0.01 15 k 680 k 0.001
MA6S718
C921
C363
C67
0.001 0.001 C68
0.001
0.01
AFIN
CONV
VP
REF
REF REF
FSET
VIDEO VIDEO
VP
SHIFT SHIFT
LV1 GND
1stLO 1stLO
LV1
+3V +3V
PSTV PSTV
LV3
2ndLO
R3V
CONLO PCK
PDA
DBLOFF
2ndLO
FMTV5 R3V
C916 Q852 CONV
R128
DBL Through: 1.5 V 0.001 DTA144EE GND
10 k
LV3
CONLO
GND
C167 D63 D64 C151
+
0.001 MA2S077 MA2S077 0.001
Q27
R129 XP1114
C176 C177 C172 C173
C190 1 k
C191 C192 L48 4 3 DBL1 47 P 47 P 0.001 47
3 P 5 P 22 P 15 nH
2 R3V
C212
DBL1 D67
C193 C194 2 P 5 1 DBL2
2.9 V MA2S077
DBL1: 2.6 V 22 P 33 P
3
L52 L53 C211
2 15 nH 12 nH 5 P C213
5 P
DBL2: 2.6 V
1 AFIN AFIN
1
L46 DBL2: 2.9 V C169 FMTV5 FMTV5
C195 C196 C197 2
6.8 nH B1C B1C
3 P 2.5 P 5 P 0.001 3
TRAC TRAC
4
D68
C198 C199 MA2S077
12 P C215 R139
39 P
1.5 P 1 k
HV J4
L54 L55
10 nH 8.2 nH C214 C216 R140 BGND
2.5 P 2.5 P 10 k
C171
1stLO 0.001
VIDEO VIDEO
1
2
AFOUT AFOUT
3
R935 150
A/V OUT J3
R936 150
C922 C924
+ + +
R123 C920
100 47 C925
1 k 10
47 C261
+
47 P
Q868 XP1114 R958
WFM: 1.0 V
1.2 k
30M 4 3 30MC
2
C988 VIDEO 20
0.001 BGND 21
65M 5 1 65MC
VP 19
22
R125 C979
4.7 k 0.001 FSET 18
AM 23
4 3 RXC RXC
GND 17
RX WFM 24
2
108MC 16
225M 5 1 225MC AFO 25
C104
330MC 15
0.01
Q52 XP1114 26
INTSP
TRAC 14
ATT 27
174MC 13
470M 470M CLONE 28
DBLOFF 12
WFM Q53 DTA123JE HFC 29
R3V PGSTB 11
C273
EXPSTB 30
0.001 4 3 EP2
800MC SPG 10
+3V 31
2
GND 9
EP1
600M 5 1 600MC PDA 32
AMAF 8
Q54 XP1114 PCK 33
C274
SDET 7
0.001
PSTB 34
C64 15 P CONVC 6
LVC 35
FMAF 5
1 VSS VDD 20 +3V TVIF5 36
R30 PDA 2 DATA QE 19 RSSI 4
2.2 k PCK 3 18 800MC
CLK Q11 RXC 37
EXPSTB 4 17 600MC
LCK Q10 3
B1C 5 16 470MC
AM: 1.1 V Q0 Q9 R3V 38
B2C 6 15 225MC
Q1 Q8 HV 2
B3C 7 14 DBL2
Q2 Q7 39
65MC 8 13
Q3 NC HV 1
R178 30MC 9 12
Q4 NC 40
150 k SHIFTC 10 11 DBL1
Q5 Q6
C262
R50 IC5 BU2092FV 0.001
SPG J2
R179 10 k
15 k
CLONE
INTSP
AFO
D77
C381
MA728
0.001
S1
DUD
UP
E
DCK
DN
+
C69
47
AFIN
WFM
1stLO
RIGHT SIDE
12 - 5