Rf Unit - Icom IC-R2 Service Manual

• RF UNIT

CHASSIS
UNIT
0.495-1.9M
ON: 0
ON: 0
ON: 0 OFF: 3.0
OFF: 1.91 D66 MA2S077
OFF: 1.91
C541 0.1
R327 1.5 k
R235
C667
C542 0.1
1.5 k
0.01
R238
100 k
R234 82
C563
D69
R232 0.001
6 5 4 C545
MA2S077
D68 330
0.01
D65
1SV172
C540
MA2S077
0.1
ON: 3.08
R233 R237 1 2 3
OFF: 1.15
R236 2.7 k
82
10 k Q508
Q507
XP4312
C543
2SC5277 D2
0.001
C544
C558
0.001
ON: 0.79 0.001
OFF: 0
C546
0.1 L81 0.27 H L82 0.33 H
D73 1SV308
C511 C512
15-30M
33 P 12 P
15-30M: 1.89
15-30M: 1.15 C515
C513 C514
100 P
82 P 150 P
D74 C416
L57 L58 L59
1SV308
47 nH 56 nH L14 56 nH 27 P
56 nH
C9 2.5 P C10 1.5 P
118-175M: 1.89 C11 C67
C8
33 P
18 P 22 P
175M LPF
R216
C548
VHF
2.2 k
0.001
118-175M
118-175M: 1.19
D75
1SV308
330-470M: 1.91
118-175M: 0.49
C216
D3 L3 L4
L5
1SV308 12 P 22 nH
22 nH 15 nH
C19
C20 C218
12 P
33 P 1 P
L2
33 nH
C21 C22 C23
R239
3 P 7 P
5 P
2.2 k
C54
0.001
C32 L8
C33 C36
0.001 33 P 10 P 5.6 nH
D11 1SV308 R95
2.2 k C35
10 P
C37
C39
470-833M: 1.88 L7
2.5 P
4 P
27 nH
833-1300M: 0.53
Q36 2SC5231 C8
D13 L9 L10 C665 C43
1SV308 100 P 100 P
33 nH 22 nH
C666
R98
390 P
R99 R18
2.2 k
1 k C42
C40 C41 15 k
15 P 3.5 P 5 P
L92
C141
C55 0.39 H
0.01
833-1300M: 1.23 0.001
C45
0.01 R106
D31 47 k
MA132WK
C5
C46 C49 L13
3 P 3 P 5.6 nH 470 P
C47
C48
6 P
6 P
C50
C51
1 P
3 P
L11 L12
10 nH
15 nH
0.495-1.9M: 1.99
B1_3V
0.495-1.9M: 1.99
C536
Q506
R227
0.1
L88 L89
1 k
DTA144EE
3.3 H 3.3 H
0.495-1.9M: 2.9
D67 MA2S077
C534
C657
330 P 680 P
1.9-15M
1.9-15M: 1.88
C535 C658
1.9-15M: 2.05
0.001 0.0022 R229
47 k
C522 C523 C524
L86 L87 L90
0.01
0.0015 0.01 0.47 H 0.68 H D70
100 H
MA2S077
0.495-30M: 0.34
R230
C525 C526 C537 10 k
0.01 0.039 0.1
C527 C528
R225
R226 82 P 27 P
2.2 k L91 C531
L85 2.2 k
3.9 H 180 P Q505
3.9 H
C529 C530
150 P 330 P 2SC4215 O
D63 C516 C517 C518 R228
1.9-15M: 2.91
MA2S077 220 P 180 P 0.001 D64 MA2S077
100
C532
Q504 XP1113
0.1
C519 C520
R222 B2_3V 5
0.01
2.2 k 0.0015 R223 R224
3.3 k
2.2 k
L84
L83
B3_3V 4
0.47 H 0.47 H
C521
15-30M: 2.05
0.1
118-175M: 2.12
R78
Q14 FH102 C118 15-30M: 2.91
330
0.001
118-175M: 1.1
118-175M: 3.0
C13 4 3 C16 C121
C14 C15
27 P 0.001
0.001 1 P 0.001
5
2
C243 18 P
6
1
C12
R81
47 P L28 L1
2.2 k
68 nH 47 nH R11
D2
D1
R10 47 k
HVU350 HVU350
R9 47 k
C69
6.8 k R79
L70 0.001 4.7 k
C119
0.10 h
C233
0.001
R8 0.001
15 k
R88
C134
Q35 C30 R16
330 0.001 330-470M: 3.5
0.001 0.001
PA805T
R15 C59
330-470M: 0.42 4 3 C58 C136
C28
47 k 2 P 0.001
0.001 7 P
5 2 C550
8 P
6 1
D29
L39
1SV308
L61
39 nH
R89 6.8 nH
4.7 k D4 L60 D5
R91
HVU350 6.8 nH HVU350
R14
2.2 k
6.8 k C135
0.001
C27
UHF
330-470M: 2.18
0.001
R13 15 k
C151
330-470M
4 P
C150
C410
0.001
0.001
470-833M: 2.98
470-833M: 2.98
330-470M: 3.05
C214
R100 12 k
0.001
C145 L42
R102
470 P 5.6 nH 2.2 k
L40
D32
R101
8.2 nH 1SV308 470-833M
47 k
C139 10 P
470-833M: 0.54
Q24 2SC5277 D2
30-118M
175-330M: 2.78 R93 30-118M 470-833M: 2.45
C138
470 P 120 175-330M: 2.46
C142 0.001
30-118M
R105 175-330M
D34
68 1SV308
R108
L41 0.1 H 2.2 k D71
R6 1SV308
120
C664
R323
C44 0.01
0.1
120
30-118M 30-118M
175-330M: 0.37 175-330M: 2.99
C663 R325
6
0.1 100
1 4
C662
Q26 2SC5277 D2
2 3 5
0.001 R324
L43
82
4.7 nH C147 2.5 P D36 1SV308
IC11
R231 R326
L44 4.7 k UPC2746T
82
R20
C52
4.7 nH
R19 120
470 P
47 k
R112
C148 833-1300M
833-1300M: 2.24
2.2 k
470 P
R110
12 k
833-1300M: 0.58
C414
833-1300M: 2.97
0.001
11 - 2
3.12
ATT
R196
R3V C258
150
0.001
1.8
B1
C257
R197 R198
0.001
56 k
220
C256
0.001
Q509
Q43
DTA144EE
2SC5231 C8
HFC
HF3V
SHIFT
C539
0.1 Q29
3.15
DTC144EE
C562
0.001
+3S
+
C211 C162 C163
D72 1SV308
10 0.001
0.001
0.495-30M:2.97
LV1
C538
0.1
+ C423
R202 1
C107 C108
220
0.22
0.22
1 B2
2
3 B3
R64
390 R65 5.6 k
C105
20 19 18 17 16 15 14 13 12 11
C560 C561
1
0.001 0.001
C104
IC3
Q2
D25 1SV308 0.01
UPD3140GS
2SK880 Y
+
118-175M: 2.47 C655
1 2 3 4 5 6 7 8 9 10
0.047
R200
R187 5.6 k
118-175M: 3.0
2.2 k
C249
0.01
Q45
VHF3V
TRAC C2 2SC4117 GR
0.22
R5
6.8 k
TRAC
330-470M: 2.5
R201
C654 0.22
10 k
CP4
R67 C155
1.66
10 k 5 P
C656 8 P
UHF3V Q37
L20
2SC4617 S 2.4
R154 1 k 47 nH
Q6
R121 330 C81
C209
FH102
R3V 0.001
0.001
6 1
2
+ 5
C154
D53 C82
10 P
4 3
MA2S111 10
C208
47 P
R37 C207
0.89
1.5 k 33 P
R120
R1 C250
4.7 k
C80
+ L45
330 8 P
D17
10 nH 47 P
1SV305
R219
C79
C78 R205 10 k
27 R204 10 k
FM: 1.24
0.33 0.001
IC10 D58 C429 C430
C435 L73
0.001 MA2S077 0.01 1.2 H 0.01
UPC2757T-E3
3 4
1 IFO 6 R209
RFI C427 1 2
1.5 k
2 VCC 5 D59
GND C18 56 P
3 PS 4 MA2S077
LO
0.01 D61
WFM: 1.5 FI3 FL-293
MA2S077
L77
C507 R207
8.2 nH
C432 150 P 10 k
R203
0.001
10 k
WFM: 1.5
C234 C71
IC1 UPC2757T-E3
FI1 EFCH266MKQP1
4 P
0.001
6
1
RFI IFO
2 VCC 5
L56 GND C436
C153
3 PS 4
LO
6.8 nH 4 P
0.1
R220
L15
15 C206 L74
3.5 P 39 nH 39 nH
C70
0.001
R221 R4
330 330
D62 MA728
G3V
C557 C553
0.001 0.001
1stVCO
SHIFT OFF 267.2-380.0MHz
SHIFT ON 380.0-550.0MHz
2.42 C158
0.001
C166
R124
0.001
C165
L68 L62 L63 120
2 P
600 10.5 nH 7.5 nH
C156
0.5 P
1
C182 D54
R125
C180 C178
0.001 1SV286
0.001 0.001 4.7 k
0.95
Q28
D46
IC4
MA2S077 2SC5006
R104 R163
R162 UPC2746T
4.7 k
120
4.7 k
R188
C164
2.24
1 k
0.001
R160
C183
2.7 k
1.5 P C173
Q30
0.001
R123
SHIFT ON: 3.13
47 k
2SC5006
SHIFT OFF: 0.47 SHIFT ON: 1.99
D42
SHIFT OFF: 1.21
MA2S077
+ C210
0.1
DBL1,2OFF: 1.48
R156
2.7 k
C167
R129
L50
0.001
C168 1 k
22 nH
0.001
DBL1ON: 2.51
Q31 FH102 C190
R133
R132
4.7 k 1.5 P
22 k 4 3
5 2
D43
+ MA2S077
R210
C186 6 1
+
0.001 33
DBL2ON: 2.51
C248
R215 DBL1ON: 1.05
1 C84
0.001 33
D44
MA2S077
R131
L51 C195
C188
22 k
15 nH
R38 R134 0.001 1.5 P
100 10 k
R135
DBL2ON: 1.07
C170
4.7 k R130
0.001
1 k
D18
X1 CR-593
HVU350
1 2
R66
3 4
22 k R39
100 k
C85
C424
18 P C1
0.01
39 P
C86
R40 0.01
100 k
C106
0.1
R41 100
R42 100
C88 R43 100
C89 C87
47 P
47 P
47 P
3.19
Q501 DTA144EE
300M3V
C90
UHF3V
C259
0.01
100 P
VHF3V
C503
C252
Q502 XP1113
8 P 0.001
R3V
G3V
C659 + C504
L69 22 nH C103 0.01 C241 0.22
10
0.001
C74
800M3V
0.001
R159
IC2
1 k
C251 C505
4 P TA31136FN 0.001
C75 0.001
16 1
MIXIN OSCIN
L17
15 2
FM: 1.24
GND OSCOUT
3.3 H
14 3
N-REC MIXOUT
13 4
N-DET VCC
R35
12 5
D60 IFIN
RSSI
15 k
MA2S077 11 6
IFOUT DEC
10 7
QUAD FILOUT
C101
9 AFOUT FILIN 8
10 P C100
R36
C102 0.1
6.8 k R60
0.001
100 k
C94
C431 CP2
R208 0.001
0.01 C99
R62
10 k
R54 R56
C247 680 P
82
2.72 470
22 k
6 P R103
10 k C98
L21 680 P
3.12
Q5 R55
LS-510
C95
3.3 k
0.001
2SC5231 C8
2.0
R59 R61
C73
R34 1.5 k 330 k
0.001
1 k
C96 C97
C242 0.01
D20 MA6S718 0.01
Q41 0.22
DTA144EE
R57
10 k R58
C93
10 k
0.001
CP1
C264
0.001
D21 MA6S718
C434
0.01
R169
470
1.71
C235
R171
0.001
220
C236
R170
0.001
6
82 k
4
Q40
R319 C244 2SC5231 C8
C160
2 3 5 10 5 P
0.001
C237
L80 5.6 nH
1.5 P
C510
2 P
C172
R128 0.001
10 k C169
D52
0.001 DBL1ON: 3.06
1SV308
Q33
R152
DBL1 XP1113
10 k
4 3 DBL1
2
+3S
C191 C192 R151
1 k 1
2 P 4 P 5 DBL2
C194 D50
C193
1SV308
22 P
8 P
L52 L53
DBL1ON: 2.84
22 nH 15 nH
C197 D47
3.5 P 1SV308
DBL2ON: 3.06
C196
C198 C199
2 P
12 P R147
6 P
1 k
DBL2ON: 2.83
L54 L55
12 nH 10 nH
C171
0.001 C402
DBL2
47 P
SDET
J1 AXK6S40445P
GND 40 1 BATRY
GND 39 2 BATRY
DBL2 38 3 GND
DBL1 37 4 GND
FSET ATT 36 5 B2
VP
SHIFT 35 6 B3
PDAUL
HFC 34 7 TRAC
PCK_IS
B1 33 8 VHFC
PSTB
GND 32 9 UHFC
+3V
+3S 31 10 GND
VP 30 11 GND
PDAUL 29 12 800MC
R3V PCK_IS
28 13 300MC
PSTB
27 14 GC
300MC
GND 26 15 GND
+3V 25 16 WFMS
5 1 UHFC
FSET 24 17 RSSI
2
R3V 23 18 SDET
4 3 VHFC
19
AMS 22 GND
WFM 21 20 AM
5 GC
1
2
4 3 800MC
Q503 XP1113
FM: 1.26
R49 R50 C221
FM: 1.27
10 FI2
10 k 0.01
CFWM450E
C239
D55
0.01 1 2
MA132WK C92
0.01
3 4 5
WFM
4 3
R172
D56
15 k 5 2
MA132WK
R199 1
R174 6
WFM: 1.74
12 k 10 k
R46
WFM: 1.16
15 k
Q46 XP4312
R3V
C65
R30
R31 0.01
1.5 k C63 R26
1 k
1.37
150 P 47 k
R177
C64
C66
100 k
15 P 4 5 6 Q4 0.01
XP6501 AB
R116 4 5 6
150 k
0.82
3 2 1
1.34
R179 3 2 1 AMS
15 k
R29
R27
470 k 22 k
Q1 XP6501 AB
R28 C61
D57
1 M 0.001
6 5 4
MA728
+
C200 C62 C60
0.01 10
0.01
1 2 3
C433
Q44
0.001
XP4312