Icom IC-U82 Service Manual page 29

PLLSW
VCC
VCC
T5 T5
R5 R5
PSVCO
PSVCO
SW5V SW5V
R515
C489
100
0.001
VCC
C429
C477
1 1 16
0.001 R
OSCI
2 15
D71 OSCO P
R402
3 14
1SS400
JPW VP L/F
SW5V 4 13
VCC ZC
5 12
DO PS
6 11
C430
GND LE
0.01 7 10
XFIN DAT
8 9
FIN CLK
IC24
C521
S-812C36AMC R460 0.001
18k
C54 C486 R489 R457
A C487
0.001 0.1 22k 10k
47p
Q22
PS5
2SA1576A D64
UNLK
1SS400
T5
C293 C488
R260
0.1 470p
22k
PLLCK
R141
PLLDATA
C398
2.2k
4.7 PLLSTB
C162
PLPS
0.01
FC
R185 C496
0.01
1k Q34
2SK1069
C234 CP1
C497
0.001
5p
LVIN
Q81
C233 R186 2SC4116
0.001 47k
MOD
R5
RMOD
MODIN
C387 3p
R85 L51
1.5k 0.82µH
FI2
ALFY450F=K
O I
IC2
TA31136FN
C421
0.1 1
OSCIN
2
OSCOUT
3
MIXOUT
C422
4
VCC
0.1 5
IFIN
6
DEC
7
FILOUT
8
FILIN
R86
C121
C122
47k
220p 220p
C120 C118 C119
R88 0.1 0.01 1
R87
33k 2.2k
VCC
O/I4
O/I3
CPU5
C304
C132
CPU5
0.047 0.0056
MIC R131
MIC
MIC C154
1.8k
15
C209
R137
0.1
PTT R104 R105
100
100k 470
I/O1
C147 R130 Q17
0.047 100k
UNR911FJ
R266
15k
C133
MIC
0.1
DET
DET
R5
VOLOUT
SW5V
VOLIN
SQLIN
SW5V
IC10
R150
470 M62363FP
24
1
VIN1 VIN8
T1
2 23
VOUT1 VOUT8
22
T2 3
VOUT2 VOUT7
4 21
VIN2 VIN7
5 20
VDD GND
DASTB 6 19
RESET
LD
DACK 7 18
CLK VDAREF
DADATA 8 17
DO
DI
9 16
VIN3 VIN6
T3
10 15
VOUT3 VOUT6
11 14
VOUT4 VOUT5
13
12
VIN4 VIN5
C244 C236
0.01 0.01
DTCS
MODIN MODIN
MOD MOD
RMOD RMOD
FC FC
B
+5V
+5V
23
VCC
T5
R5
PSVCO
4.80V
SW5V Q11
XP4601
R337
R441
1.5M
2.2M
IC19
C463 4 3
MB15E03SLPFV1
0.001
5 2
C465
0.001
1
6
R30
C461
1.8k R440
0.3p
100k
R504 R528 4.00V
22k 10k C301 C50
0.001 10 D61
1SV286
R442
R459 R487
4.85V 1k L44
10k 22k
15nH
C493 C471
0.001 0.1
R458 R488
10k 22k
R465
C476
1k
R514
0.001
R517 IC20
R50
100
330k
270k
SN74AHC1G
1 4
R444
VCON VCC 66HDBVR
R49 120k
R48
2 3
JPW
150k
GND OUT R443
C509 22k
X4
C523 C522 0.001
R463 R449
L55 R518 C70 CR-783
1 1
680k 0.22µH 150k 0.001 (15.3 MHz) 22
R469
R448
1k
680
MOD
RX: 3.50V
RX: 3.60V
R84 C111
C492 4p R81
TX: 0.00V TX: 0.00V
390
470 0.01
X3
C386 C491
7p 56p CDBCB450KCAY24
L50 R80 C482
0.56µH 100k 0.001
R82
C115
3.9k FI1
C117 RX: 0.70V
R244 0.001
FL-335
TX: 0.00V
100k 0.001
(46.350 MHz)
C479 R79
Q14 0.01 180
2
16
MIXIN
2SC5006
15 4 GND
GND
C116
14
N-REC
82p D63
13
N-DET C417
DA221
12
RSSI 0.1
11 R387
IFOUT
3.3k
10 R456 R455
QUAD
9 JPW 100k
AFOUT
R83
470
R388
C114
C303 C113 C112
0.033 47k
0.001 0.001 0.001 Q65 R389 C418
47k 0.1
2SC4116
VCC
IC3 IC4
LMV324IPWR CD4066BPWR
R177
10
1
1k
8
2
C125
9 3
0.0022
C217 4
R95
R397 C126
0.1 5
1.8k 0.0027 1.5M
6
6
C134 220p 7
Q67 7
C124
5
UMG2N 0.01
R108 220k
C423
IC3 R257
1 R176
R93 R94
3.9k JPW
4 3 27k 1M LMV324IPWR
2
5 1
MIC
DET
R5
VOLOUT
SW5V
C123
0.001
+5V
C532 R497
0.001 2.2M
Q82
R498 R499 C530
2SC4116 C529
82k 82k 1
330p
C528
R496
0.001
15k
+5V
23
11 - 2
VCC
T5
R433
C518 R422
47
3.40V
0.001 3.20V 100
3.70V
C459
C449
0.001
R426 0.001
100
C458
2.20V
0.001 C442
R434 0.001 L40
R423
3.3k 22nH
C460 10k
C450 R427 C447 L41 C540
5p 0.001 10k 3p 39nH 47p
0.75V
C446 C444
4p
4p
R436 Q76
C457
5.6k
D59 12p 2SC5231C8
HVC375BTRF
R430 R424
C448 22 3.9k
Q75
0.5p
D60
2SC5231C8
C456 R435 R428
HVC375BTRF L46
0.70V Q74
12p 270 3.9k
0.47µH
2SC5231C8
C451
3p
1.50V
R420
R21
C300 2.2k
2.2k
0.001
C519
0.33
MP1
L42 R20 C32
56nH 22k 0.001
L43 C453
18nH 47p
R445
R447 1.8k
C454
1.2k 3p
R68
R69
C474
C473 100 4.7k
R446
0.1
0.22 R432 C455 C452 R431
470 0.70V
1.5M 5p 4p 27k
R184
C99
1M
C472
0.001
Q5
10
C475
0.001 2SC5006
PS5
R5
R5
RX: 4.40V
TX: 0.00V
R77
100
R525 C545 C102
0.001 8p
JPW
L29
C108 C107 C106 R71 L20 R522 R523 C546
0.15µH
0.01 0.001 18p 470 0.56µH 120k 100k 0.001
C504 C503
6 C478
0.75p 1p
R262
3 0.001
OUT GND
10
1
IN C538
Q13 D65
22p
HVC350BTRF
5
3SK318YB
C533 C351 R75 C105 C104 R72 R70 C507 L57 C505 R467
22p 4p 220 0.01 0.001 180k 120k 4p 10nH 12p 220k
C506
0.001
PS5
VCC
R115
R97
220k 120k
C212 R98
0.01 150k
TONE
C131
R44 R107
0.01 C213
10k 150k
2.2
14
I/O1 VDD
13
O/I1 CONT1 C128 C214 R113
12 R114
O/I2 CONT4 0.1 0.033 68k
18k
11
I/O2
I/O4
10
CONT2 O/I4 Q68
9
CONT3
O/I3
8 R112 UNR9213J
R169 R170 C136
VSS I/O3
1M
0.0056
39k 10k
SW5V
PS5 PS5
R320 R321
15k 10k
C249
0.01
R336
100k
R326
68k
C369 4 3
MAIN UNIT
0.033
Q53
5 2
XP4601
R318 R319
6 1
68k 68k
Explanatory notes
VOLTAGE LINE
R323 R327
C373 C370
10k 100k
TX LINE
0.0068 0.0018
RX LINE
R324 R325 C372 C374
1.2k 68k 0.022 0.0022
COMMON LINE
C443 C441
C535
47p
0.001 470p
C20
0.001
RX: 0.00V
RX: 0.00V
EP12
R13 TX: 3.00V R506
R15 TX: 3.80V
100 22
100
C445
C439 C19 C14
3p
L5
0.01 470p 0.01
22nH
C24
0.001 L59 C534
C26 R14
8.2nH 0.001 L6
4.7k
0.001 1nH
Q1
2SK3476
C440
8p L7
C23
R12
8.2nH
7p
15k Q2
R520 C15
RD01MUS1
R524 39p
JPW
JPW
R5
C25
D3 10
R16 C22 C536 R516 C469
10p
1SV308
JPW 15p 27p 4.7
2p
Q3 Q83
RX: 0.00V
2SC5107
2SC4226
TX: 0.60V
C13 R341 R340
D4
R7
0.001 27k 27k
MA2S077
RX: 0.00V 220
TX: 2.10V
R417
JPW
R357
C17 R358 15k C298 C18
R11
0.001 27k 4.7 0.001
3.3k
R519
6.8k
R419
RX: 0.00V
1k
C511
TX: 3.20V
0.001
C438
R418
JPW 0.001
RX: 4.88V
TX: 0.00V
R503
2
100
1
RX: 4.60V
3
R61 TX: 0.00V
47
IC3
LMV324IPWR
C90
0.001
L18 C499 C500 R222 R258
10nH 4p 1 47k 180k
C94 C502 C89 C277 L56
1p 1p 0.001 22p 47nH
RX: 3.75V
TX: 0.00V
D12 C92
HVC350BTRF
12p
RX: 1.80V
Q12 TX: 0.00V
C97 L19 C96 R66 R64 R187
3SK318YB
4p 10nH 12p 220k 220k 100k
R259
R252
220k
120k
D11 HVC350BTRF
C95 C93 C88 C87 R59 C138
C82
0.001 0.01 100 0.001
0.001 0.001
0.001
VCC
AF ON: 7.10V
Q15
IC3 OFF: 0.00V
R413
2SB1132
JPW
LMV324IPWR
4 C179
0.01
V+
IC3
GND
LMV324IPWR
11
R99 R122
R178 C145
2.7k
180k 220k 10
C135
270p
13
R117 1.5k
14
12
R100
Q16 R123 C139
100k R120
C137 6.8k
R486 R121 1 47k
XP6501
0.033 1M C129 1.5k
R159
1.5
100k
R5
VOLOUT
C174
22
Q54 Q21
2SA1576A 2SA1576A
R328 R261
Q31
220k 47k
R329 R139
UNR9210J
10k
47k
SW5V
C375 C161
0.01
0.001 C299
470p
R174
15k
POWER SUPPLY: 7.2 V DC
IMPROVEMENT: TESTER (Inner impeadance 50 kΩ or more)
R160
R1
100
82k
L26 ANT
C288 C204
L24
EXCCL3225U1
0.001 0.001
0.82µH
D1
1SV307
C289
C21 L2 L1
C8
0.001
4.7 14nH 17.5nH
0.001
D72
1SV307
C4
L32 L47
L4 C205 2p
C2
0.40-0.9-2TL 0.40-0.9-2TL
0.001
0.40-0.9-2TL 0.5p
C1
C5 C3
C281 3.5p 8p 4p
0.001 C287 C278
4p 4p
C544
MP5 0.5p
R2
C543
C284 C466 C510
0.5p JPW
39p 10p 10p
D33 D32
RX: 0.00V
MA742 MA742
TX: 1.60V
R162 R161
C251
22k C252
0.001 22k
0.001
C10
0.001
Q37
UNR9113J
PS5
C512 R210
0.001 3.9k
R52 C73
150k 0.1 C243
R53
0.001
6.8k
R163
C75 R251 R54
0.1 330k 180k 3.3k
C79 L58 L15
0.001 15nH 17.5nH
D2
MA77
D50 D8 C52
C516 C76
4p
MA728 MA77 5p
3p
C153
100p
1 1 8 8
2 2 7 7
3 3 6 6
C547 4 4 5
0.0047
R128
R513 IC5 10
68k
NJM2070M
R127
C171 33
C152
0.1
0.047
C150
1
C149
R126 0.01
Q73
120k
2SC4617
R406
C399
100k
0.0033 R405
100k
C432 C431
1 0.001
MIC
AFOUT
J3
EXT SP
C169
0.001
SW5V
C168 C167
0.001 47p
J6 W5 SP1
1 3
2
2 4
1
D27
MA742
C164
0.001
MIC
MC1
KUC3523-040245
R144 C163
D34
0.001
22k
MA8056
S3
J2
R132
EXT MIC
470
OPT
MIC
C165 C166
EP5
0.001 0.001