Kenwood NX-720 Service Manual page 125

Vhf digital transceiver
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A
B
C
D
NX-720
PC BOARD / 印刷电路板
1
TX-RX UNIT (X57-8230-11) Foil side view (J79-0343-09)
2
Ref. No. Address Ref. No. Address
IC1
7R
Q502
3O
IC301
11M
Q503
3N
IC304
3
12H
D4
10H
IC401
8M
D5
10I
IC405
7O
D6
8I
L114
IC406
9M
D7
10H
IC407
8P
D8
10J
4
IC408
8N
D9
10H
IC501
11P
D10
10H
IC502
9P
D11
C163
10J
IC503
11Q
D12
10I
IC504
12Q
D13
8I
5
IC506
9N
D14
9J
IC507
10N
D15
10J
R148
C158
IC508
11M
D16
8H
R142
IC513
8L
D17
8H
IC514
8L
D103
6E
6
R134
IC516
7M
D104
5C
R136
Q4
9J
D105
6E
Q5
8I
D106
6E
Q6
9I
D107
8E
C184
7
Q7
9J
D108
10L
Q8
9I
D109
10L
Q9
9I
D111
7F
Q10
9H
D112
8F
Q11
8H
D113
8F
8
Q102
7K
D114
8F
Q106
7I
D204
9D
Q201
10G
D205
9E
Q202
R247
9D
D206
9E
C253
Q303
10K
C247
D207
9E
9
C250
Q305
11F
D401
6Q
Q401
6Q
D403
6P
C246
Q403
L212
5R
D405
9M
Q407
8O
D406
7N
Q409
9L
D407
10
7O
Q410
8O
D408
11L
Q414
11L
D409
11L
Q415
11L
D504
8L
Q416
11L
D705
5N
11
Q418
5Q
D706
5N
Q501
11M
Component side
12
Layer 1
Layer 2
Layer 3
Layer 4
Layer 5
13
Layer 6
Foil side
14
E
F
G
R171
R139
R154
C191
R152
R176
C161
R161
C151
D111
C177
L116
D114
C205
D107
C86
L26
C234
L232
CN204
C233
CN206
C208
C212
L216
C214
C258
C293
R207
C215
C251
C216
L16
C210
Q201
C209
C207
C201
CN203
R245
R205
R201
R203
D10
L317
C357
L202
C358
C360
C370
Q305
C361
R378
R368
C369
C368
L301
R350
H
I
J
K
C119
C121
C171
C172
L130
L104
C173
R183
R103
1
6
R169
Q106
3
4
C111
D111
C102
C118
R168
C108
C103
CN11
CN10
D16
D17
R34
R39
C52
R622
D13
D6
R204
R69
L1
1
L4
C4
IC514
C37
C2
L27
4
C60
R66
R624
1
6
R70
Q8
R60
3
4
Q4
C83
C80
R64
C84
R56
R63
C81
C3
L25
Q9
D14
C58
R48
R62
C79
R57
C5
Q7
Q6
G
C76
D
C6
R55
S
R73
C74
C69
C68
R303
C77
C309
R54
L18
C63
L302
D15
C57
R307
C45
C54
R37
R38
C42
D8
L6
L7
R35
D11
L14
R36
C317
CN13
CN12
C323
R435
R308
R440
R358
1
6
CF1
IC304
3
4
R351
C348
C351
L
M
N
O
PC BOARD / 印刷电路板
TX-RX UNIT (X57-8230-11) Foil side view (J79-0343-09)
C632
5
4
8
1
Q502
15
14
13
9
10
5
4
3
D706
D705
C788
C434
L106
C433
C628
C629
8
1
IC516
C457
R425
9
16
R621
1
8
R417
C624
R623
IC513
Q410
4
5
8
R629
5
4
3
R413
IC401
5
1
C408
C542
C416
R411
R512
1
6
R511
IC506
D405
1
6
4
3
3
4
Q409
CN502
3
4
IC406
C541
R558
C461
5
1
R518
L506
C543
C566
C506
L508
R549
C423
C563
C553
C559
C551
D109
C558
R555
R580
D108
R557
R583
CN504
R554
C545
C462
C549
C544
1
6
C552
Q414
R599
3
4
Q415
R433
R572
C466
C548
R603
C312
R569
4
3
IC508
CP506
R568
5
1
P
Q
R
NX-720
12
11
8
7
6
2
1
R822
R667
R405
R406
C413
C471
4
1
Q403
Q401
5
8
C409
C430
I
IC1
G
D
C437
C438
R438
CN416
Q407
CP510
CP507
CP513
R541
C519
CN503
R531
C521
R501
R524
C531
R526
C536
C530
R508
C527
C533
C508
C509
C535
R516
J79-0343-09
S
1
2
3
4
5
6
7
8
9
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