Kenwood NX-300 Service Manual page 167

A B C D
NX-300
PC BOARD / PC
1
TX-RX UNIT (X57-7370-11) (A/2)
Component side view (J79-0128-39 A/2)
2
3
Q504
+
L503 C542
4
R538
C533
C534
R566
R534
R531
1 5
5
IC503
+
R532
3 4
R536
R535
6
C563
+
R515
R586
C520
R504
7
R574
C500
R501
C502
8 R570
R500
R935
C508
C503
C501
C505
R955
C504
9
C509
C710
C711
C506
10
R958 R956
C703
11
J79-0128-39 A/2
Ref. No. Address Ref. No. Address Ref. No. Address
IC404 10G IC700 8H
12
IC500 9B IC701 9E
IC501 7C IC702 7K
IC502 7E IC900 4P
IC503 5C IC901 9O
13
IC504 7H IC902 5N
IC600 4J Q503 6C
14
E F G
板
C630
C987
L530
C543
R550
L504
R523
C523
R506
R522
C522
6 1
C562
7 25
C600
C514
C512
1
12 19 R547 IC504
13 18
R567
4
C555
C513
L599
C561
R712
C717
R724
C728
CF701
1 24 C727
R717
R738
C736
C735
R727
R726
1 8
R721
IC404
C760
12 13 4 5
C724 R725
C713 C729
Ref. No. Address Ref. No. Address
Q504 4B Q900 9P D604 7J
Q604 6J Q901 7N D605 6I
Q605 3I Q902 7M D700 6L
Q607 4I Q904 9O D900 8P
Q608 4J Q905 4N D901 5M
Q610 5I D501 7C D902 5P
Q704 6L D505 4C
H I J K
C646
C640 R648
R652
R651
R653
C641
R641
R654
Q607
R655
Q608
C653 R659
S
D
R660
G
R657
R664
R658
+
F900
+
C631 Q604
R633
C761
D605
C626
8
D604
R635
C602
5
R629 C622
R600
R704
R705
S
C902
C947
R735
R951
C942
R795
L M N O
PC BOARD / PC
TX-RX UNIT (X57-7370-11) (A/2)
Component side view (J79-0128-39 A/2)
1
PTT
GND
C945
Side_G
Side_1
C943 C971
5
Side_2
C636
C913
R921
Q905 R922
C964
D901
R755
D700
C957
Q704
C955
R906
R910
Q902
S D R913
R758
G G
R918 D S
C948 R907 R909
+
C950
C904
C949
R589
CN900
C907
C967 R926
R925
R934
P Q R
NX-300
板
TX-RX UNIT
C976
(X57-7370-11) (B/2)
TXO
5V
RXEO
OPT9
R908
D902
RXEI
DTI
C951
TXI
OPT8
OPT6
OPT11
POW
OPT7
OPT1
R902
OPT5
OPT2
OPT4
L901
DGND
OPT3
AGND
5
1
OPT10
Q904
J79-0128-39 B/2
3 4
C974
C973
C972
Component side
Layer 1
Layer 2
Layer 3
Layer 4
Layer 5
Layer 6
Foil side
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14