Kenwood NX-300S Service Manual page 95

A B C D
NX-300(S)
PC BOARD
1
TX-RX UNIT (X57-7830-11) (A/2)
Component side view (J79-0128-49 A/2)
2
3
Q504
+
L503
C542
4
R538
C533
C534
R534 R566
R531
L530
1 5
5
R550
IC503
+
R532
3 4
R536
R535
C563
6
+
R515
R586
C520
R504
7
R574
C500
R501
C502
R570
8
R500
R935
C508
C503
C501
C505
R955
C504
9
C509
C710
C711
C506
10
R958 R956
C703
11
J79-0128-49 A/2
Ref. No. Address Ref. No. Address Ref. No. Address
IC404 10G IC700 8H Q504
12
IC500 9B IC701 9E Q604
IC501 7C IC702 7K Q605
IC502 7E IC900 4P Q607
IC503 5C IC901 9O Q608
13 IC504 7H IC902 5N Q610
IC600 4J Q503 6C Q704
14
E F G
C630
C987
C543
L504
R523
C523
R506
R522
C522
6 1
C562
7 25
C514 C600
C512
1 8
R547
12 19 IC504
13 18
R567
4 5
C555
C513
L599 C561
R712 R704
C717 R705
R724
C728
CF701
1 24 C727
R717
R738
C735 C736 R735
R727
R726
1 8
R721
IC404
C760
12 13 4 5
R795
R725
C724
C713 C729
Ref. No. Address Ref. No. Address
4B Q900 9P D604 7J
6J Q901 7N D605 6I
3I Q902 7M D611 8I
4I Q904 9O D700 6L
4J Q905 4N D900 8P
5I D501 7C D901 5M
6L D505 4C D902 5P
H I J K
C646
C640 R648
R652 R651
R653 C641
R641
R654
Q607
R655 C636
Q608
C653 R659
S
D
R660
G
R657
R664
R658
+
F900
C631 + Q604
R633
C761
D605
C626
D604
R635
C602
R758
R600
C601
R629 C622
D611
C693
S
C902
C947
R951
C942
L M N O
PC BOARD
TX-RX UNIT (X57-7830-11) (A/2)
Component side view (J79-0128-49 A/2)
1
PTT
GND
C945
Side_G
Side_1
C971
C943
Side_2 5
C913
R921
Q905 R922
C964
D901
R755
D700
C957
Q704
C955
R906
R910
Q902
R913
S D
G G
R918
D S
R907 R909
C948
+
C950
L901
C904
C949
R589
1
Q904
CN900
3
C974
C973
C907
C967 R926 C972
R925
R934
P Q R S
NX-300(S)
TX-RX UNIT
C976
(X57-7830-11) (B/2)
TXO
5V
RXEO
OPT9
R908
D902
RXEI
DTI
C951
TXI
OPT8
OPT6
OPT11
POW
OPT7
OPT1
R902
OPT5
OPT2
OPT4
DGND
OPT3
AGND
5
OPT10
J79-0128-49 B/2
4
Component side
Layer 1
Layer 2
Layer 3
Layer 4
Layer 5
Layer 6
Foil side
1
2
3
4
5
6
7
8
9
10
11
12
13
14