Icom IC-2800 Service Manual page 46

Dual band fm transceiver
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D75
DA202U
R545
1k
81
SC4081
R358
R357
6.88
2.2k
1M
VAF
C401
R360
R359
0.1
22k
10k
7.87
Q84
2SC4081
R379
C413
470k
0.001
R380
1k
C414 1
R378
4.17
2.2k
7.87
Q86
2SC4081
R390
C422
470k
0.001
R391
1k
C423 1
R389
4.2
2.2k
UDET
R404
R403
2.2k
6.88
1M
Q87
2SC4081
C433
R406
R405
0.1
22k
10k
UAF
R440
100
4.08
IC23A
NJM4558M
C446
C451
0.1
10
8
+
C447
3
0.0027
+
1
2
438
R439
C450
4
2k
100p
82k
C449
82p
48
3.88
0p
R441
10k
MW/N
R443
47k
2
MOD
[EUR], [ITA] only
R], [ITA] only
D68
IC27A
RB706F-40
NJM4558M
R456
47k
8
3
1
+
1.94
2
R454
R455
4
82k
82k
4.92
1.27
UAFO
VAFO
PSEL
R272
10k
C284
PSQL
1
Q73
DTC144EU
PSQL
CLONE
8V
HV
Q1 2SC4081
VTX
R1
4.7k
+
D1
C1
VSHIFT
1SS355
10
C3
R3
C5V
1
82k
R2
100k
C4
0.001
VMMUTE
R4
10k
STB
DATA
CK
PLSTB
VUNLK
UUNLK
R50
470k
Q13
R49
DTC144EU
470k
R51
Q14
100
DTB123EK
Q17
7.91
2SC4081
UTX
C123
C124
R77
0.001
0.001
4.7k
+
D19
C122
1SS355
LV
100
Q19 2SC4213
C125
1
R79
82k
R78
C126
R80
100k
0.001
10k
UMMUTE
Q34
5
1RX
1
C499
2
0.001
4RX
3
4
W8
Q37
1
5
2
3
4
Q34, 37: UMG9N
Q35, 36, 38, 39: DTB123EK
POWC
VDET
C475
0.001
R139
270
C213
0.001
W7
3LB
C248
0.001
R190
220
VR 4.66
R191
560
VR 4.74
IC28
C249
TA31136FN
0.1
D40
MA8047
X2
CDB450C24
VR 0.97
R203
1.5k Other
3.3k [EUR], [ITA ]
+
VR 0.98
C250
R204
47
10k
C252
C251
0.047
0.022
VDET
VR 0.75
VSQL
VSOUT
C5V
Q3 DTC144EU
C2
R6
C9
0.001
10k
0.001
Q2
2SC4213
L1
C6
0.82 H
0.1
C8
C5
+
R5
C7
0.001
0.001
2.7k
0.001
R56
R52
R58
3.9k
2.7k
2.7k
C73
0.001
R54
C473
+
+
+
2.2M
0.22
C74
C77
C76
0.1
0.047
0.22
Q18
2SK880
R528
1k
R81
R530
NTCCM16084LH
1.2k
Q99
C200
2SC3324
0.001
R529
820
C128
0.001
C477 10
+
+
C476 10
Q35
UR 7.87
VR 7.87
D28
C201
C202
Q36
1SS355
0.001
0.001
D29
Q38
DAN202U
Q39
C203
C204
C205
0.001
0.001
0.001
C215
R143 100
L46
VR 7.51
82p
1.2 H
C216
0.001
C214
Q40
R140
0.001
2SC4215
100k
C218
VR 1.02
0.001
R142
C217
33k
0.001
C500
R141
D30 MA133
W9
0.001
270
VR 3.50
R194
VR 4.37
C517
39k Other
VR 4.37
100p
22k [EUR], [ITA]
[EUR], [ITA] only
VR 0.67
C261 0.1
R195
NTCCM16083NH221KC
C263
390p
R197
W19
12k
R192
except
220k
[EUR], [ITA]
R196
C264
C265
10k
330p
390p
VR 0.65
R193
560
R199
C259
470
1
Q54
R200
C258
C260
2SK1829
47k
0.001
0.001
R205
Q55
C254
C255
3.3k
2SJ144
100p
R208
0.001
1M
R207
C257
47k
0.1
R206
47k
Q52
C253
2SC4116
0.033
[EUR], [ITA] only
VFM 4.74
C488
C489
0.001
0.001
W/N
VAM
COMPLETE VIEW
D2 MA77
C11
8p
C13
R12
R9
C10
0.001
470
10k
R10
0.001
10k
R11
C14
33k
L2 LB-270
0.3p
D3
R7
Q4
R8
HVU350
68k
2SC5085
220
C12
C15 0.3p
0.001
IC2 M64076AGP
1
XBO
GND
2
SI
XIN
3
CPS
XOUT
4
OP2
RST
5
VCC
OP1
6
FIN1
FIN2
7
C474
LOCK1
LOCK2
8
0.22
PD1
PD2
9
VT1
VT2
10
VF
GND
C490
0.001
L29
0.82 H
Q100
2SK880
R82
+
C132
1k
0.001
C131
C130
0.001
0.047
R83
C478
220k
0.1
C484
D20
C127
C487
1
1SV284
47p
0.001
R531 1.5k
R86
R85
330
39k
R137
W5
C480
820
22p
L66
C136
L67
8.2 H
8.2 H
0.5p
Q20
2SC4228
C137 0.5p
C206
C207
22p
12p
VR 1.74
C212
C208
C210
1p
3p
0.5p
C209
L68
C211
L69
2p
1.8 H
4p
1.8 H
W10
IC6B TC4W66F
[EUR], [ITA] only
3
FI4 ALFY450F=K
2
6
5
5
W2
except [EUR], [ITA]
IC7A TC4W66F
R198
FI5 CF4WS450HT
8.2k Other
8
7
1.5k
2
1
1
[EUR], [ITA]
C266
C267
3 4 5
4
100p Other
0.1
150p
[EUR,ITA]
VR 7.86
VAM 7.08
Q56
2SC4081
R210
Q103
R209
10k
DTC144EU
10k
R211
22k
Q57
R202
2SK880
47k
R212
C269
0.001
100k
R201
1M
R217
470k
Q53
DTC144EU
R18 100
R14
R15
R13
C20
470
C18
100
33k
0.001
L3
C17
0.001
0.22 H
100p
R17
120k
C485
C19 1p
VV 0.6
1p
Q6
Q5
VV 2.2
2SC5085
2SC5085
VV 0.7
20
W14
W18
19
18
X1
C81
17
R546
33p
CR-549
16
220
CP5
15
14
C82
C83
13
20p
22p
12
C80
11
5p
R59
22k
Q102
2SK880
L30
R534
8.8nH
R84
2.2k
R535
C133
330k
1.2k
0.001
C135
R536
C483
0.001
C134
820
0.047
R539
0.75p
560k
D21
R538 2.7k
1SV284
R89
47
R90 47
R88
C140
C142
R87
330
0.001
0.001
18k
C139
R92
47p
120k
C141
C494
0.3p
0.3p
Q21
UV 2.5
Q22
UV 0.9
2SC4228
2SC5085
UV 0.7
UR 6.8
L47
C221
0.56 H
7p
C219
C220
0.001
0.001
Q41
UR 0.96
2SC5193
R144
R138
C222
R145
100k
270
0.001
270
IC6A
TC4W66F
C268
7 8
[EUR], [ITA]
0.1
1
only
[EUR], [ITA]
1
only
4
3
W3
Q58
except [EUR], [ITA]
DTA144
EU
IC7B TC4W66F
3
6
2
5
[EUR], [ITA] only
R215
C273
100
180p
L63
680 H
C272
R213
R220
0.01
100k
39k
C271
C274
C275
0.1
C270
0.01
0.01
0.1
R214
R216
47k
10k
D41
RB706F-40
C278
Q59
47
2SK880
VAM 6.59
Q60
2SC40
D79
1SS355
C491
CP-SMV
1
R219
120k
Q95
DTC144EU
C84
30p
R
3
+
C481
R14
C223
0.001
VR
USQ

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