Icom IC-T81E Service Manual page 50

50T:2.2
50T:0.8 50R:0.5
50M
50R:0.4
R881
220
L807
0.22 H
C877 C878
R882 C880
0.1 0.001
27 K 5 P
C879
3 P
Q821
C885
2SC4403 3
D802
22 P
MA2S077
R884
R134
220
10
D803 C891
R888 C886
L808
MA2S077 4.7K 0.001 0.1
0.1 H
C:12.7
C884
0.001
D804
MA2S077 Q902
T:4.1
Q903
R887 2SD2216 S R:0
4.7 K +3C 2SB1132 R
D901
MA133
C911
W:1.7
0.001
50R:1.7 R901 + C912
VC:1.7 470
2.2 Q905
TXC
50T:0.6
Q901 50T:3.3 R903
2SA1588 GR
Q822 50R:0 4.7 K
UN9211
R902
50T:4.0
2SC5107 O 6M
470
50R:0
00M Q904 VT:3.4 R905
VR:0 4.7 K
UN9211
R904
Q907
VHF 470
9
2SA1588 GR
Q906
VT:4.1
UN9211 C903 R907
VR:0
L809 0.1 4.7 K
D805
C890
22 nH
MA2S077
5 P Q909
UHF
Q908 R906 2SA1588 GR
C898
470
0.001 R892
UN9211 R909
4.7 K VT:3.3 VT:4.1
UC:2.2
4.7 K
VR:0 VR:0
1200 Q911
L810
12 nH
Q910 R908
2SA1588 GR
0 470 12T:3.4
UN9211
12R:0
R900
VCC
4.7 K
L931
0.82 H R911
D808
0.15
MA2S077 R912
Q912 Q913 1.8 K
UN9215 XP6401
L932
823 10 H
TXC
SC5107 O
C915
R913 0.001
1200M 10 K
C908
0.001
D806
L811 PSET
MA2S077
4.7 nH
Q53
D807
C897 R+3
MA2S077
6 P UN9115
1200
C63
R899 0.001 C65
R57
R897 4.7 K 0.001
1 K
95
4.7 K
K
C62
0.001
12C:2.3
Q403
C901 R+3
UN9115
0.001
Q824
C900 UHF
2 P
2SC5195 C416
C72
0.001
0.001
800
R+3
300
R414
C418
4.7 K
5 P
R511 D508
4.7 K
MA132WK
C522
C417
5 P C521
0.001
0.001
Q202
UN9115
R+3
C82
C213
0.001
0.001
C70
0.001
C71
0.001
D142
MA2S111
50TX
C183
VHFTX
0.001
C150
R138
R140
D143 C144 0.001
150 R144
MA2S111 47
0.01 3.9 K
R135
L134 R142
R141 L135
C182 47
0.82 3.9 K 47 0.18 H
0.001
L136
C145 50T:2.4 D132
C181
C141 50T:2.0 50R:0 33 nH
0.001 1SV308
0.001 0.001
50R:0 VT:2.1
VT:1.7 VR:0
C146
C149
VR:0
50T:0.8 150 P 0.001
R161
50R:0 R139
3.9 K
VT:0.7 3.3 K
VR:0
C143 R131 R143 C147
15 P
0.001 47 2.7 K
50T:0.8
Q134
50R:0
C142 R165 Q133
0.001 VT:0.7
3.3 K 2SC3356 R25
2SC4403 3 VR:0
VHFTX
UHFTX
R893 C892 C921 R147
R145 C159
C155
4.7 K 0.001 0.001 47
150 0.001 R152 0.001
UT:2.8
3.9 K
UR:0
C154 L138
VCC L139
UT:2.6 0.01 22 nH
C151 L137 5.6 nH
R132
R146 UR:0 27 nH R149
0.001
180
5.6 K 3.9 K
C156 D141
R150 C157
C153 7 P 1SV308
C161 5 P 2.7 K 10 P
UT:0.8
C152
0.001 UR:0
Q135 Q136
0.001 R166
UT:0.8
3.3 K
UR:0 2SC5107 O 2SC3356 R25
12TX
L142
C138
R898 R122 R126 L122 39 nH
C135 L143
0.001 5.6 nH
4.7 K 100 22 0.001
1.5 nH
L123
C136
50TX
12T:2.3 3 P 1.5 nH Q138
R124
12R:0
R121 L121 3.9 K MXR9745 RT1
C132 R156
R133 L125
0.001 3.9 K 3.9 nH
100
22 2.7 nH
C137
VHFTX
4 P
L124 C133
C902 2.7 nH 12T:3.3
3 P
0.001 12R:0
R160
C131 C139 R123 100 K
C163
R125
0.001 0.001 3.9 K Q132
3.3 K 0.001
Q131
2SC5454 R54
UHFTX 12T:0.7
12T:0.8
2SC5195
12R:0
12R:0
C913 Q139 Q140
0.001
UN9115 2SD2216 S
12TX
R910 C171
C899
R128
0.001 1 K 0.001
4.7 K
12T:4.1
12R:0
C415
0.001
D53
1SV308
D406
MA2S111
R510
4.7 K
C516
D507
0.001
1SV308
C519 C518
0.001 0.001
D311 C315
C323 C318
1SV308 0.001
2 P 0.3 P
D309
D310
MA2SV05
R310
MA2SV05
L306
10 K
0.12 H
C319
L305
8 P
0.12 h
C320
47P
C321
R312 R311 C313
47 P
R316 100 K 100 K 0.001
4.7 K
R309
C322
D510 47
0.001 VT:0
MA6S121 VR:0.1
C314 R308
0.001 10
Q302
XP1115
C212
1 5 R210 R208 R204
0.001 C209 R205
4.7 K 100 22 K
2
C324 0.001 1 M
C211
0.001
3 4 L206 R207 0.001
W:2.7
D204 0.1 H 10 K
Q201
1SV308
3SK292
C210 L205
C73
0.001 0.001 0.1 H
W:0.6
C207
0.001 W:2.0
R209
100 K
C206
R206 R203
0.001
C208 D203 100 120 K
0.001 MA2S304
C124
0.001
L907
3225 H
C940
C173
0.1
0.001
L906
3225 H
L908
0.14
C924 C923
0.1 0.001
R925
100
Q921
MRF9745
C928
C160
0.001
0.001
C175
R157
0.001
3.9 K
R163 D134
3.9K
1SV308
R923
R924 27 K
C907 C180
100 K
0.1 0.001
C178 C172 C170
R158
5 P 0.001 0.001
3.9 K
R159
82K
R914 C930 R915
C931
10 K 0.001 10 K
0.001
C932
0.001
R917
22 K
R918
FI52
27 K
R53
LFL30-13C1270B060
82
C60
C57
0.001
0.001
C61 6 1
VCC IN
8 P 5 2
5 5 10
GND GND OUT IN
10 4 3
OUT IN
OUT GND
L59
C59
3.3 nH IC51
0.001 FI51
UPC2748T
LFL30-13C1270B060
C411 R409 UT:0
R413
0.001 150 UR:0.8
4.7 K
FI401 R410
100
EFCH435MWNP1
L404
C409
18 nH
8 P R404
2 1
33 K
C412
UT:0
IC501 D405 0.001
UR:2.4
Q401
1SV308
UPC2748T
C515 D503 C507 C506 C505 2SC5195
0.001 1SV308 2 P 1 P 2 P
6 1
VCC IN
5 2
GND GND
3
4 L501
OUT GND
L503 L502 R503
33 nH
D505
10 nH 10 nH 330
R509 1SV308 R507
2.2 K 2.2 K L505 L504
22 nH 22 nH R504
100
1 5
C511
2
R508 0.001
3 4 C509
100 K
C510 C508
Q502 1.5P
5 P 8 P
R505
XP1115 C512
4.7 K
0.001
C514
0.001
R506
C513 100 K
C517
0.001
0.001 D12
MA132WK
VT:0
VR:3.0
C310 R302
0.001 1 K
Q301
VHF
3SK291
VT:0
VR:1.5
L304 C305 D304
82 nH
0.001 1SV308
C308
D306
0.001
MA2SV05
R306 R303 R301
L303
100 K 33 nH 4.7 K 4.7 K
R304
100 K
R307
120 K C306 C307
C31
47 P 0.001
0.001
R111
C116
R113 330
0.01
4.7 K
C201
0.01 C123
C120
10 P 0.75 P
L201
R201 WFM
0.1 H D108
82 K C117
1SV308
3 P
C205 C204 D201
0.001
0.001 1SV308
C121
C119 D106
L202 0.001
C202 0.001 HVU350
0.001 0.1 H
D202 R112
MA2S304 470 K
R202 C203
D107
100 K 0.001
L110 L109
HVU350
0.47 H
0.47 H
R110
470 K
R953
R934
4.7 K
150
Q928
UN9211
R954
L912
470
107 nH
L914
0.22 H
C955
C954 15 P 0.001
C942 C943
0.001
0.0022
L913
0.40-1.4-2TL
D902
1SV271
L909 L910 C941
C944
6.8 nH 2.2 nH 0.001
3.5 P
C:13.2
R949
C945
C951 2.2
47 P
R928
0.001
33 Q922
L933 C917
2SK3075
0.5 P
L911 2.2 nH
2.2 nH C957
0.001
L916
J951
C948 23.2 nH
MM7329-2700
0.001
C961
39 P
C960
C949
56 P
R929 0.001 L919
Q923 L917
1 K 65 nH
80nH
2SD2216 S
R930
R931 C962
R932
100K C950
100K 120 P
10 K
0.001
L920
C914 0.25-1.9-13TL
0.001 C971 0.001
Q931
XP4312
1 6
C969
220 P
TXC D908
2
C970
MA2S077
5
Q932 56 P
3 4
1 8
R916 C934 2SD2216 S
1 M 0.001
7 C937
C935
2
C939 0.001 0.001
R952
3
6 0.001
470
4 5
C938
C933 R919 D919
IC901 0.1
0.001 4.7 K MA8062M
NJM3404AV
R31 D31 C54
3.3 K MA2S077 0.001
1200MHz
L64 C34 C35
R32 D32
3.9 nH 0.001 0.001
3.3 K 1SV308
R51
L2 C36
6.8 K
8.2 nH 0.001
C64
2 P
R58 L58 C55
L3
150 8.2 nH 0.001
8.2 nH
R33
C1
3.3 K
C56 12T:0
1 P
12R:0.9
15 P 12T:0
C2
R52 C3
12R:2.5
3 P
Q51 4.7 K 3 P C37
0.001
2SC5319
L402 L401
18 nH 18 nH
C404
0.001
R401
R403 C403 C402 C401
3.3 K
C410 3.3 K 3 P 10 P 8 P
120 P
D403 D402
L403
MA2S077 MA2S077
15 nH 400MHz
L301
C304 L302 C84
D404 56 nH
D407 C405 0.001 56 nH 56 P
MA2S077
MA2S077 0.001
Q501
D501
1SV308
2SC5195
C303 C302 C301
C24
18 P 33 P 22 P
120 P
C502 L15
UT:0 D302
D303
0.001 107 nH
UR:2.3 MA2S077
MA2S077
L102 L101
0.15 0.15
R502 R501
68 K
3.3 K C33
C504 C503
0.001
0.001 0.001
C103 C102 C101 R100
47 P 120 P 68 P 100 K
D102
D10
1SV308
MA2S111
D10
R15
MA2S111
22 K
C78
50MHz
50T:0 0.001
50R:1.5
L108
1
C114
R106
0.01
330
R103
33 K
C108 C107
Q101 0.001 0.001
C115
2SC5195
9 P
D103
MA2S077
UHFTX
Q929
2SA1588 GR
C904
C952
R933
0.001
0.001
150
C978
C953
L915 0.001 L4 L1
0.001
0.22 H 14 nH 10.5 nH
L905
C956 D906 R943
17.5 nH
8 P 1SV308 47 K C25
C326 3 P
1 P
D903
R945 Q926 C327 C325
C983
MA2S077
5 P 8 P
150 0.001
UN9215 C982
0.001
Q924
C958 C986
C977
0.001 0.001
UN9215 R936
0.001
68
R935 47 K
L924 0.82 H
C968
L923
C979
R942 L918 C967 D918
0.001 0.82 H
0.001
150 36 nH 0.001 1SV308
D909
C963 D907 1SV308
1SV271 39 P C965
R939 L922 C974
Q925
8 P
150 0.82 H 0.001
C964 C966
UN9215
10 P 10 P
C973
0.001
C980 D910
0.001 1SV271
C981 R944
R940 47 K
0.001 47 K
Q927
L921
R938
UN9215
0.82 H 33 C976 C975
0.001 0.001
C972
0.001
L926 R946
C988
C916
0.1 H 100
0.001
1 P
D913
1SV308
J952
C987
MM7329-2700 D914
0.001
1SV308
C53 L57 L56 L55 L54 C58 C45 C43 C41
2.5 P 4.9 nH 6.8 nH 5.6 nH 6.8 nH 4 P 1.5 P 2 P 3 P
C52 C51
2.5 P 2.5 P C44 C42
C49 0.001 0.001
0.5 P
D52 D51
MA2S077 MA2S077
C48 C46 L51 L53 L52
C50
3 P 2 P 6.8 nH 6.8 nH 7.5 nH
1.5 P
MP1
2135 PA HEATSINK
L925
0.22 H
C4
C8 C6 L9 L8 L7
8P
10 P 6 P 21 nH 23.2 nH 12 nH
C7 C5
D904
33 P
68 P 1SV271 C13 C9
0.5 P 0.5 P
L6 L5 C985
23 nH 19 nH 0.001
C14 C12 C10
2 P 7 P 6 P
C23 C21
L12 L11 L10
27P 47 P
54 nH 54 nH 44 nH
L13
C19 C15
0.22 H
3 P C17 3 P
C22 5 P
330 P
L14
80 nH
C20 C18 C16
L18 L17
15 P 22 P 18 P
0.25-1.9-13TL 0.25-1.9-13TL
L16
107 nH
C31
15 P C29
24 P
C27
10 P
C32 C30 C28
47P 82 P 68 P
AGC
+5V
Q9
XP4601
Q4
TUNE
C:12.8
2SB1132 R
CHGC
R8 C:13.5
22
HV
R16
C200 R9 D6
22 K
0.001 22
SB07-03C
Q5
C199 C198
D5 0.001 UN9210
0.001
MA133
D4 Q6
R10
MA2S728
HAT1024R 10 K
VCC
1 8
2 7
C194
3 6 L61
0.001
4 HF50ACC453215P-T
5
C197 C195
C196
R7
0.001 0.01
0.001 MP2
100 K C190
1903 CONTACT SPRING
0.001
+
1
BDET
2 CHG
3 -
C:13.2
L62
C:13.5 3225 H
HV
VCC
+ L63
C192 D1 C191 J3
C193
3225 H
0.001 RB060L-40 0.001 HEC2711-01-020
10
COMPLETE VIEW