Icom IC-91A Service Manual page 46

12-3 RF UNIT
RF UNIT
AR3C
TTEMP
VCC
T6
VAVCOC
J800
3.37V
ULV
UAVCOC
LOOUT
UVCO3
VCO3V
PLLOUT PLLOUT
MOD MOD
3.44V
to VCO
unit J1
BCVCO3
BCVCOC
VLV R811 0
VSHIFT VSHIFT
Q801
VVCO3
UNR9115J
BCLV R815 0
+5.5V
+3V
C838 C826
470P 47P L801
VCC
1U
R801
Q803
R823
C834 2SB1132 10K
4.7K
0.001
D800
MA2S728
Q804
C807
2SD2216J
0.01
D801
C832 C833
MA2S111
0.001 22 R800
10K
R824
2.2K C836
C835
22
0.001
R802
APLLSTB
PLLDATA
CK
UNLK
R805
1K
REF
LV
VCC PLLOUT
J1001
REF REF
RFB RFB
VCO3V VCO3V
AAGC AAGC
+5.5V +5.5V
+3V +3V
VCC
RFR3 RFR3
HV HV
CK CK
MOD L900 0.1U MOD
DATA DATA
to MAIN
T6 T6
unit J703
PLLDATA PLLDATA
CHG CHG
APLLSTB APLLSTB
REFC REFC
300M800MC 300M800MC
TTEMP TTEMP
AR3C AR3C
UNLK UNLK
VBUAC VBUAC
IOSTB1 IOSTB1
BAGC BAGC
DASTB1 DASTB1
LV LV
IFA IFA
Q652
XP1115
R621 10
VBUAC
1 5
2
C620
D606
R624 0.001
1SV308
VAUBC 3 820
C672 C671
220P 0.001 C627
4P C623
1P
D605 D604
L606
L607
HVC376B HVC376B
+5.5V 15N 22N
R980
C625
100K C622
15P A 435M
R623 R622
15P
47K 47K RX: 0.63V
R981 TX: 0V
150K
5
3
4
TUNEA2 1
IC955 C626
R982 2
TC75S51FU 0.001
150
R659
10
R662
820
C668 C664
4P 1P
D654
L654
15N HVC376B
R976 D655
100K 1SV308
C666
15P R661
R660
R977
47K 47K
150K 5
3
4
TUNEB2 1
C667
R978 2 IC954
0.001
150
TC75S51FU
R901
2.2K
VCC
J1000
EP1001
DC-IN
D1001
C1002
RB060L
D1000
0.001
MA2S728
R1000 0
EP1000
Q1000
HAT1026R
EP1002 R1001
CP1001
BATT + 8 1 100K
D S
7 2
D S
from C1004 C1005 6 3
D S
0.001
battery 0.001 5 4
D G
pack
CP1002 C1008
BATT -
0.001
EP1003
Q800
XP1115
1 5
2
C803 C840
Q105
47P
0.001
XP4315
3 4
C802
4 3
0.001
5 2
R807
C804 C839 3.3K
0.001 220P 6 1
C822 C821 C820
0.1
3.3 0.33 C132
0.001
C806
R808
0.001
1.2K
D100
1SV308
C810
C811
R830 100P 0.01 R831 R832
18 18 18
C808 C809 C858 C812 C813 C814
100P 0.01 10P 0.01 100P 22
R806
470
C851
0.001 L850
C823
R851
17 1 10N
NC NC 0.22
68K
16 2
VUC CPO
15 3
CE GND
14 IC800 4
C852
1K GND FIN C853
13 LMX2313 5
FINB 2P 5P
LE C837
12 6
OSCIN 0.001
DATA
11 7 Q850
R803 NC NC
1K 2SC5006
C854
0.001
C819
C818
100P 0.001
R804 D850
R820
1K
1SV308
10K R855
2.2K R854
C830 3.3K
220P
R818
100
R821 L851
56K Q802 4.7N
2SK880
C831 R822
0.001
82K
C857
2P
D503
MA2S111
R513
10
C515 C506
L503
R515 0.001 0.001
R512 10N R503 R500
2.2K 56K 33K 2.2K
L507
15N
L502
C517 10N
C514 C510
15P 12P 2P
Q501 R504
C519
2SC5006 10K C500
12P D500
5P
C509 C507
D506 1SV308
L504 18P 0.001
D508
HVC375B
1SV308 6.8N
Q500 C504 4P
2SC5006
D502
C516 R514 L500
220 D504 HVC375B
0.001 6.8N
MA2S077
R506 C505
220 0.001
R516 C502
R502 18P
47K
D501
R508 47K L501
MA2S077
C512 3.9K 15N
R511 220P
C513
10K
0.001
C503
0.001 R501
10K
D509
1SV308
R609 10
C603
L602 1
27N
A 435M
R604 R602
RX: 3.26V
47K
TX: 0V 180K
435M
C608 RX: 3.29V
L609
5P
TX: 0V L601 C602 C600 C630
27N
68N 6P 12P
5P
435M
RX: 0.65V C601 C631
Q600
TX: 0V 27P 18P
3SK318
L600 L608
C616
1 R616 22N 27N
22K
D603
L605 R619
MA2S111
1K
47N
C621
10P
R614
R617
22K 180K
C634
47P
C615 C611 C609 R610
Q601 5P 100
0.5P 2P
3SK318
D602
D601
R615 L603 R611
HVC376B HVC376B
180K 15N 100
L604
C612 2P
15N
R620
220 C610
B 435M C613
RX: 3.25V 15P R612 15P
TX: 0V 47K
C614
0.001
C661 C657
0.001 L652 R657 1 R652
47N
1K 180K
D652 MA2S111
C662
10P
C652 C650
2P
0.5P
R655
L653 22K
C656
22N
5P
D651 D650
L651 L650
Q651 HVC376B HVC376B
15N
15N
3SK318
C663
15P
C653
B 435M R653 C654 2P C651
180K 15P R651 R650 12P
RX: 0.63V
TX: 0V 47K 47K
R658
220
C655
0.001
EP900
C903 4 3
LO
L901 PS
0.01 5 2
0.22U VCC GND
6 1
IFO RFI
C900
C909 C901
IC900 0.01
27P 0.001
UPC2757TB
C951
R962 C965 0.1
IC950 0.1
47
M62366GP C966 0.1
IC951
VDD VCC CD4094BPWR
C960 0.1
10 11
AO10 AO11
9 12 1 16
AO9 AO12 STR V+
8 13 2 15
AO8 DO D OE
C961 0.1 7 14 3 14
CLK
AO7 LD Q5
C962 0.1 6 15 4 13
AO6 CLK Q1 Q6
C963 0.1 5 16 5 12
AO5 DI Q2 Q7
C967 0.1
4 17 6 11
AO4 AO1 Q3 Q8
C964 0.1
3 18 7 10
AO3 AO2 Q4 Q'S
2 19 8 9
VSS GND GND QS
1 20
R162
NTCG16
RX: 0V
TX: 2.96V C176
0.001
R167
220K R165
EP104 C172 C173 R163 C177
NTCG10 D101
220P 220P 22K 0.001
C175 MA132WK
470P
R161
0.15 R113 150 EP105
RX: 0V
TX: 5.23V
R114 150
IC100
UPC2762TB
C123 C122
0.1
3 4 0.001 L109
GND OUT
0.47U
2 5
GND GND C121 C137
1 6
IN VCC 0.001 22P
R108
12K
C125 R111 L111 C124
47P 47 18N
15P
Q102 L112
2SC4226 39N
R112 R110 C131 C130
C129
82 82 6P 6P
8P
R105
C167
Q104 47K
0.001
UNR9215J
R168 0 R154
R169 0 R158
C164 C163 Q151
1.8K
0.001 UNR9215J
0.001 C158
R850 0.001
47
C162 C166
0.001 0.001
C850
0.001 C159
0.001
R160
10K
R157
R852 D851 Q150
220K
MA2S111 XP6401
1.2K
R159
C170 0.001
10K
R853 DSET
2.2K PSET
UHFC
VHFC
D202
MA2S728 R200 2.2K
C856 RFR3
3P
C211
BCC 0.1 R201
C209
L204 47K
100P
Q201
100U
C213
UNR9115J
0.001
C214
C257
0.001 R202
D203 10P
10K D255
L253
1SV308 1SV325
0.18U
L252
Q200
1U
2SC4215
C210
1
R518
47K
L254 C254
0.15U
0.01
C518
C212 R203
0.001
0.1 680
C260
33P
C258
D256
0.01
1SV308
R517
3.3K
C256
C261
0.1 C265
47P
50MC 1 5 R258 47P
2.2K
2
B1C 3 4
Q251
C264 Q304
C501 47P XP1115 C262 UNR9115J
0.001 47P
C334
0.001
80MC
B2C
D404 MA2S111
L610
R420
0.39U C425 C418
10
0.001
R423 0.001
Q451 820
D405 C420
XP1115
1SV308
0.5P
UHFC 1 5
C633 D600
1SV308 C423
8P
2
9P
D403
L404
HVC376B
VHFC 3 4 68N
L611
C471 C470 R715
56N C421
47P 47P 47K C422 33P C419
100P 100P
C469 R422 R421
47K 47K
0.001
C424
0.001
D453
MA2S111
VAUBC 1 5
R459
2 C461
10 B 145M
0.001
R462
RX: 3.26V
VBUAC 3 4 2.2K
TX: 0V
Q452
C466 C462
XP1115
0.5P
6P
D454
1SV308
L452 D452
HVC376B
68N
C724
C463
300M800MC 0.001 C465
33P
100P
Q703
UNR9115J
AAGC
BAGC
C464
220P
1 5
Q704
2
UNR9215J
B2C 3 4
C721 Q702 C720
0.001
XP1115 47P
5.54V
+5.5V
R973
100K
RFR3
R974
R970 150K 5
R900 3
C904 100K
0.001 2.2K 4
1
R971
AR3C IC953
150K 5 R975 2
3 TC75S51FU
150
Q900 4
UNR9115J
TUNEA1 1
IC952
R972 2
RX: 3.34V TC75S51FU
150 R983
TX: 0V
1k
TUNEB1
ATT
R166
C174
22K
470P
EP100
RX: 7.40V
TX: 7.17V
C110
L104
0.001 C109 C108
1 0.001 24N
D2
C102 C101 C100
9P 39P 1SV307
10P
L107
95N
C114 L105 Q100
L106
2SK3476
0.001 3.9N 1.5N
L100 L12
Q101 19.5N 0.82U Q1
C103
RD01MUS1 UNR9211J
C112 15P
RX: 7.39V
R100
47P L101
TX: 7.20V
22 3.7N
C44
C22
0.001 D4
R104 R3 0.001
1SV271
100
39
R102
R4 1K
1.5K R101
C113
0.001 6.8K
R2
C25
390
R106 Q2 220P
RX: 0V
XP1114
1.5K C26
TX: 5.77V
1 5 0.001
EP102
2
3 4 R6
1M 145M
1K
R150 1M RX: 5.05V
IC150
C155 NJM3404AV
435M
0.047 L103
1 8 R151 RX: 5.33V
15N L102 15N
C150 1
2 7 10K
3 6
4 5 C107
Q3 75P
R153
UNR9215J
220K
C32 C30
C154
0.001 0.001
0.01
R156
C168
330K
R152
0.001
100K R8 D7
2.2K 1SS362
D150
MA2S728
Q4
UNR9215J
C171
0.001
L202 0.33U L201 0.12U L200 0.1U
L203 0.33U C215 1
D201 D200
C208 8P C206 22P C203 6P C201 12P 1SV308
MA2S077
R204
R10
3.3K 2.2K
C207 C205 C204 C202
82P 56P
180P 33P
Q250
D250
2SC5006 C250
33P MA2S077
C253
10P
D252
R253 L250
1SV325
22K 0.18U
C331
R255 R250 0.001
330 2.2K
L251
R254 Q303
10K 0.15U UNR9115J
C332 R323
0.001 R313 R309
10K
1.5K 3.9K
D310
C251 MA2S728
C255 0.01
0.01
R315
C326 C318
10
0.001 0.01
C324
0.001
L310
R317
D306
2.2K 0.1U
MA2S077
R314
22K
C328 C317
L308 C319 0.001
470P
39N 0.01
C333 C338 R324 R310
D253
47P 47P 10K 3.9K
MA2S111 C325
5P
Q301
2SC5006
C321
C320
2P
D308 0.001 Q300
R322
HVC375B
56K 2SC5006
C322
0.001
L403 C412
82N C416 R417 1 R414
47P
1K 22K
C417
Q302
0.001
UNR9115J
A 145M C339
C323
RX: 3.62V
220P 0.001
R419 TX: 0V
R415
100K
Q401 22K
3SK318
C411 5P C408 1.5P
R409
220
D401
R416 R413 L402
82N HVC376B
220K 180K
A 145M
RX: 0.64V
TX: 0V
C409 C468
R411
100P 0.001
47K
C410
C454 0.001 145M
RX: 3.31V
1 R453
22K TX: 0V
L451 R456
82N 1K
C459
0.001 R408
10
R454 R451 L401
22K 180K
Q450 0.22U
R458 C475 3SK318
C453 C450 R410
100K
470P
5P 1.5P 220
C407
R407
0 8P
D450
C455 R455 R452 L450
Q400
0.001 82N HVC376B
220K 180K
3SK318
B 145M
RX: 0.64V
R457
TX: 0V
220 C451
R450 100P
145M
47K RX: 0.63V
TX: 0V R406
220
C452
0.001
D705
MA2S111
R705
C717 C708
47
47P
R714 0.001 L704 R712
2.2K
10N 330 R711
22K
C718
D706 R710 C715 C711 C709
1SV308 10P 22 15P 1.5P 0.001
Q701
2SC5006
D703 L702
D704
L703
HVC375B HVC375B 2.7N
3.3N
R713 C716
220 0.001 C713 C710
27P 27P
C714
0.001
12 - 3
D1
C9 C7 L3 L2 L1 J1(CHASSIS)
1SV307 22P 22P 17.5N 12N
17.5N
1
C5 C3 C1
C8
2P 2P 2.5P
L11 22P
L10
0.82U 0.82U
C6 C4
C2
L4 2.5P 5P 5P
50N
R15
C46
150
0.01
R1
390 C23
0.01
R5
R14 C48
100
150 0.001
C45
0.001
C34
0.001 L14
0.82U
D8
C35 C43 L7 L6 L5
0.001 0.001 1SV308 0.1 60N 68N 54N
C14 C12 C10
C106
1.5P 6P 1.5P
2P
L16 L13
C13 C11
12N 18N
22P 33P
C28
R205
D11
5P
47K 1SV308
R7 1K
C31
0.001
C41 C39 L15
1 1 56N
C37
C38
18P
18P
D10
1SS362
R9 1K
C40
0.001
R320
47K
C337 C311
47P 0.001
R304
10K
R302 R301
2.2K
2.2K
C313
D303 C310 C308 C306 D302
0.01
MA2S077 22P 1SV308
12P 27P
L306 R306
0.1U 10K C309 C307
120P 47P R318
3.3K
L303 L302
L307 R307 39N 47N
39N 22K
D301 L301 L300 D300
C315 C312 C336
5P 5P MA2S077 82N 56N 1SV308 0.01
C304 C302
5P 15P
D305 R303
R321 R319
HVC375B
56K 2.2K R300 3.3K
2.2K
C305 C303 C301
22P 39P
C314 18P
0.001
R305
47K
C300
0.001
R325
10K
Explanatory notes
VOLTAGE LINE
TX LINE
RX LINE
COMMON LINE
C402
R405 1
1K
R403 R401 R400
47K 3.3K
180K
C400 L405 D400
100P 0.15U 1SV308
C401
4P
L400
0.1U
C707 C702
0.001
0.001 R703
18K
L701
0.1U R701
R706
2.2K
0
R704
27K
C700
C701 C18 C17 C16
5P 0.001 5P 1.5P 1.5P
Q700
2SC5624
C705
D700
3P 1SV308
L700 R700
L9 L8
D701
2.7N 2.2K
1SS362 15N 15N
D702
HVC375B
R702 1K
R707
C706 C703 C725
47K C704
0.001 27P 0.001 470P