Rf Unit - Icom IC-T81E Service Manual

11-2 RF UNIT

50T:3.1
50R:0.4
R874 C863 R341
C342
10 K 0.22 390 K 0.001 C344
MOD
0.001
C862
R342
0.001
2.7 K Q341
R344
56 K
2SC4215-O
50T:0.6
+3
50R:0.4
D341
R802
1SV288
100 K C805
C345
100 P 0.001
R821 L341 C343 PLST1
L342
6.8 K 2.2 100 P
+ 10 nH CK
C825 PDA1/UL
0.1
C845 C341 L343 C806
0.01 0.29 H
0.001 47 P
C808 C807
+3 Q804
47 P 47 P
R815
2SK880 Y 3.3 K
R817 C821
270 0.001
C822
R816
+5V 0.01
6.8 K
R818
+
R820 10 K
+
10 K C823
1.5
R819
+
10 K
C817 Q805
C824
C844 +
10 1.5
2SC4117 BL 0.22
R875
22 K
MOD
VLV
7
GND
R876
6
ULV
2.7 K C864
5
0.22
MOD
4
SHIFTC SHIFT
3
GND
2
C866
12LV
0.001 1
R877
R862
+
47 K
6.8 K C851
C865 Q817
0.1
0.001
UN9211
+3
C749
0.001
R870
12VCO3 L806 C857
100 P 47
5.6 nH
L804 6 5
4.7 H XIN STB C860
+5V C856
7 DATA 4
VCC 2 P
0.001
8 3
LD
CLK
9 2
C861 R871
BS GND
10 1 0.001 15 K
FIN
CP C858
C835 C836 0.001
0.001 0.001
IC802
R872
TB31242FN Q816
12 K
2SC4228 R45
Q825
UN921E
PLST2
Q826
UN911D
R805
R869 R804
4.7 K
1 K 4.7 K
+3
PDA2/UL
Q827
R806
R857
4.7 K Q828
UN921E
560 C850
0.1 UN911D
R807
+
47 K CK
C849
6.8
Q829
UN921E
J4
AXK5S40045P
C704
IFIN
1 0.001 R702
40
2NDLO
470
GND
2
39 GND
C702
PSET R701
0.1
3 100 K
38 THERM
L701
GND
1.8 H
4
37 IOST
+3C
5
36 DATA
PDA2/UL
6 C705
35 CK
0.001
VCC
7
34 AGC
VCC
8
TUNE
33
LOCKV
9 T:0.6 R610
32 VHVCO
R:2.5 C717 4.7 K
PLST1
0.001
10
31 UVCO
PDA1/UL
11 D602
30 TXC Q701
1SS364
R614
BDET 2SC4215 O
12 4.7 K
29 12VCO
GND
13
WFM
28
MOD
14 IC2
AM
27
GND BU4094BCFV
15
26 GND
PLST2 IOST 1 16
16 STRB VDD
25 R+3 DATA 2 15
DATA OENA
HV CK 3 14
17 Q5
CHGC CLK
24 VHVCO 4 13
Q1 Q6
HV VLVCO 5 12
18 Q2
6MVCO Q7
23 6MVCO 6 11
Q3 Q8
FSET SHIFTC 7 10
19 Q4 Q'S
GND
22 8 9
VSS QS
EURDEV
20
21 DC-DC
C997 C995
C994 0.001 0.001
IC3
100 P
+5V
BU4094BCFV
+ L65 +
C85
C991 330 H
IOST
C993 0.001 1
100 P
STRB VDD
0.001 2
DATA OENA
C87 C86
CK 3
C992 22 22 CLK
300 4
100 P Q1
800 5
Q2
AM 6
Q3
WFM 7
Q4 Q'S
8
VSS QS
VCC
+3C
COMPLETE VIEW
L802
4.7 H 1 20
VCC1 GND1
2 19
IN1 IN2
3 18
ENB VCC2
4 IC801 17
CLK XB
5 16
XI
DATA UPD3140GS
6 15
R803 T1 XO
7 14
10 K LOK GND2
8 13
CP1 CP2
9 12
FI2
FI1
10 11
FO1 FO2
W:2.1 R304 220 R303 47
SHIFT
VT:3.3
C305
VR:0
2 P
R305
UT:3.3
C309
6.8 K
UR:0 C306
0.001
12T:3.3 C307
0.001
0.3 P
12R:0
Q302
L302
L301 R307
W:1.8
0.82 H 80 nH R306 100 2SC5195
VLV 6.8 K
R316
GND
220
ULV
C301 Q301
D301 C308
MOD 0.001 C304
1SV282 0.001
2SC5195
SHIFT 2 P
R317
GND
68 K
R311 W:0.7 R312 50R, VC:2.2
12LV 47
220
C312
C316
0.001
0.3 P
C314
1 P R313
C315 6.8 K
L311 VU: 0.9 Q312 50R, VC, W:0.8
L313 L312
0.001
0.82 H
54 nH 50 nH
2SC5195
R314
50R, VC:1.9
6.8 K
C311 D311
C333
C313
0.001 MA2SV05 C329
0.001 R315
1 P
100 0.001
C302
0.001
D302 C317
MA2S077 0.001
Q311
VC:0.8
R308 C330
2SC5195 0.001
2.2K
C334
0.001
R301 C325 R323
UC:2.1
270 K 1 P 68 R329
68 K
R302 C327
R324
C303 1 K 0.5 P
2.7 K
0.001 UC:0.9
C326
0.001
UC:0.8
L321 L322 Q322
0.82 H 15 nH Q323
R325
2SC5195
UC:1.9
2.7 K 2SC5195
C324
1 P
C322
C321
47 P
22 P R326
47
D322 Q321
UC:0.8 C328
HVU350
0.001
2SC5195
D321
R321
MA2S077
1 K
C323
0.001 R369
R365
C361 C368 C389 R368
10 47
0.001 0.1
0.001 82
C372
L331
0.001
10 H
C369
7 P
L332
R366
33 K 15 nH C374
12C:2.8
Q350 3 P
L360 C364 L330 C366 2SC5006
C371
10 H 12 P 22 nH 7 P
6 P
12C:3.0
C373
R363
C363
D351 1 P R367
180
0.01
1SV270 C365 12 K Q351
R361
2 P 12C:0.7
2SC5195
22 K
R364
C367 +
2.2 K
D352 0.001
C362
MA2S077
0.001 R360 C360 R362 C370
10 K 0.1 2.7 K 22
R611
330
R+3 4 3
5
Q602 2
6
XP4315 1
WFM
WFM-H
WFM-L
+3C
1200
UHF
UVCO
12VCO
+3C
R13
NTCCF20124AH 473KCT
THERM
VCC
R14
47 K
Q2
C:3.3 C:12.6
16 IC6
XP1501 AB
15 +3C
S-81332HG-KC
14 EURDEV
Q5
13 VHF 1
Q6 I O
G
12 6M + +
R1 C91 2
Q7 C89 C90 C92
11 W3
4.7 K 0.001
Q8 0.001 10 4.7
10 R3
3
4.7 K
9
C:0.1
Q1
+3C
2SD2216 S
R2
C88 C989
10 K
0.001 0.001
C:0.6
C93 R4
10 K
0.001
11 - 2
R343
47
R345 R838
100 1 K
R346
C347 R347
220
0.01 82 K
R351
C348
15
3 P
C818 C346
50T:2.4
33 P 0.3 P
50R:0.4
Q342
50T:0.7
50R:0.4
2SC4215 O
W:50R, VC:3.2
W:3.2
L801
4.7 H
C310 C801
C803 C802
0.001 0.001
0.001 0.001
D312
1SS364
R319
100
C320
0.001
C318
0.001 R841 330
VLVCO3
C319 10 R842 330
R318 VHFOUT VHFOUT
0.001 9
15
GND GND
8
R844 330
VHVCO3
7
UVCO3
50R, VC, W:1.6
6 R845 330
UHFOUT
5
Q313
GND GND
4
R847 15
2SC5195
12VCOOUT
3
12VCO3
2 R848 15
W:3.2
GND GND
1
R322
47
J302
IMSA-9230B-1-10Z057-T C896
3 P
C332
R327
0.001
100
12C:3.1
R328
150
C331 R330
0.001
15
UC:2.3
R373
100
C387
0.001
L338
8.2 nH
R371
R374
100
100 K
C388
C386
2 P 3 P
Q354
2SC5195
R372
100 K C375
0.001
L333
6.8 nH
C376 C378
C380 L336 L337
4 P 1.5 P 3 P 4.7 nH 6.8 nH
C381
Q353 C377 C379 1.5 P
8 P 24 P
2SC5195 C384
0.5 P
L334 L335
5.6 nH
6.8 nH
C382 C383 C385
1 P 3 P 2 P
VCO BOARD
Q818
XP1116
12VCO3
+ 4 3
C867 C868
0.001 15 2
6MVCO3 1
5
+
C869 C870
0.001 15
Q819
VHVCO3 XP1116
+
4 3
C871 C872
0.001 15
2
VLVCO3 5
1
+
C873 C874
0.001 15
UVCO3
+
C875 C876
0.001 Q820
15
UN9116
R609
4.7 K
FI601
C610
0.001
FL-299
C603
1.5 P
2 1
D601
Q3
R951
C609 1SS364
C608 330
2SB1132 R 0.001 2 P
5
R615
270
C:3.3
4 C612
R613 0.1
+
4.7 K FI602
R616
C94
560 R612
SFECV13.35MA
0.001 C95
4.7 K
2.2
C613
0.001
R349 R865
120 100
50T:1.7
R867
50R:0.5
L344 50T:2.7 50T:0.8
C852 220
C350 R866
0.1 H 50R:0.5 50R:0.3 0.001
R348
0.001 47 K
82 K
L348
C353 C354 L347
R839 C349
22 P 39P 56 nH 82 nH
15
0.01
C854
0.001
R864 C853
C351
L345
50T:0.7 47P L346 100 0.001
C358
50R:0.3 82 nH 68 nH
3.5 P Q813
C352 C355 C356 C359
C357
Q343
82 P 18 P 18 P 22 P
39 P 2SC5107 O
2SC4226 R25
C833 R826
R828
C832 0.001 100
C831 220
0.001 0.001
R827
C830
D810
82 K 3 P R725
R742
Q807 MA6S121
10 K 4.7 K
W:0
2SC5107 O
C827
50, V, U, 12:1.5
3 P
C748
Q721
0.001
2SC4215 O
X1
R721 L724 L725
C731
CR-638 10
4.7 K 10 H C725 C727 C729
0.01
2 3 2 P 0.3 P
2 P
GND OUT
1 VCC 4
VCON C724 C722
L723
10 P 10 P R726
0.1 H
4.7 K
C741
Q811 R722
0.1 47 K
R849
2SK880 Y C726 C728 R727
3.3K 7 P 7 P 470
R851
1.2V W:0
270
R850 C730 50, V, U, 12:0.7
L726 L721 0.01
4.7 K
C840 C839 0.56 H 0.56 H
72.5 nS
0.001 0.001
C841
0.01
R854
10 K
R852
+
C842
1 K +
C815
2.2
10
+
C843
2.2 R853 Q803
10 K
R811 2SK880 Y
56 K
Q812
2SC4117 BL
R855
6.8K
R812
C816
82 K
0.001
R813 R814
47 K 47 K
RF UNIT
12VCO
+3
6MVCO
VHVCO
VLVCO
UVCO
IC601
UPC2757T-E3
4
3
PS LO
C602
5 2 C527
0.01 VCC GND
0.001
6 1
IFO
RFI
R608 R513 C524
4.7 K 4.7 K 7 P
C601
0.001
L507
22 nH
R512
D509
C526 10 K
0.001 MA2S077
C525
Q503 C523
0.001
0.001
UN9215
6MVCO3
50T:0.8
50R:0.4
R881
6MVCO3 220
C877 C878
R882
0.1 0.001
27 K
C879
D801
3 P
C855 MA132WK
0.001 VLVCO3
C885
D802
22 P
VHVCO3
MA2S077
R868
100 R884
220
VHF
D803
R888
L808
MA2S077
4.7K
0.1 H
C881 C882
VHVCO3 C:12.7
0.1 0.001
VLVCO3
C884
UVCO3
0.001
D804
FSET MA2S077 Q902
R887 2SD2216 S
R885
33 K 4.7 K +3C
D721 C911
W:1.7
1SS364 0.001
2NDLO 50R:1.7
VC:1.7
TXC
C883 50T:0.6
Q901
0.001
Q822
R728 UN9211
W:0.8
4.7 K 2SC5107 O
50R:0.8 6M
VC:0.8
400M Q904
50T:0
UN9211
UVCO3
VHF
R889
220
Q906
WFM-H
UN9211
L809
D805
C890
22 nH
MA2S077
5 P
UHF
C888
Q908
C898
0.001
0.001 R892
UN9211
+3 4.7 K
UC:2.2
+5V
1200
L810
12 nH Q910
R890
UN9211
39 K
R900
VCC
4.7 K
UC:0.8
D808
MA2S077
Q912
C889
0.001
UN9215
Q823
LOCKV TXC
2SC5107 O
R913
1200M 10 K
R894
150
12VCO3
D806
L811 PSET
MA2S077
4.7 nH
D807
C897 R+3
MA2S077
6 P
1200
C894
0.001 C63
R899
0.001
R897 4.7 K
R895
4.7 K
33 K
C895
0.001
12C:2.3
C901 R+3
12C:0.8 0.001
Q824
C900 UHF
2 P
2SC5195
C72
0.001
800
R+3
300
C418 R414
4.7 K
5 P
R511
4.7 K
C522
5 P C521
0.001
50T:2.2
50R:0.5
L8
0.2
Q821
2SC44
R134
10
C886
0.001
D
M
R901
470
50T:3.3
50R:0
R902
470
VT:3.4
VR:0
R904
470
C903
0.1
R906
470
VT:3.3
VR:0
R908
470
L931
0.82
Q913
XP640
C908
0.001
Q
U
C65
0.001
C62
0.001
C416
0.001
C417
0.001