Kenwood TH-D72A Service Manual page 89

A B C D
TH-D72A/D72E
1
TX-RX UNIT (X57-784X-XX) (A/3): CONTROL section
0-11: K, 2-71: E Component side view (J79-0278-19 A/3)
2
R939 C951
3
75
76
4
R920
IC727
5
C918
100
1
1 8
IC724
4 5
C909 R903
6
C908
C904
C952 R945
X703
C937
7
12 1
13 48
R948 R954
IC728
8
24 37
25 36
C961
C923
R963
Q729 C964
R958
9
R950
C959
R952
R956
R962 R947
10
4
C967 C955
IC725
5
11
TX-RX UNIT (X57-784X-XX) (B/3): PTT section
0-11: K, 2-71: E Component side view (J79-0278-19 B/3)
12
S722
MONI
13
14
E F G
PC BOARD
GND
TXD
51
50
NC
R855
+ C857
C872
C858
C873
S
7 1 D
G
R982
Q720
R981 R875
IC722
26 C898
25
R869
8 14
C887
C888
C876 R873
CP80
C884 C886
R846 R847
R864 R871
C865
R874
C864
C889
12 7
C905
Q723
13 6
C877
IC721
R859
18 1
R860
C938
C899
19 24
C878
C990
R922
C892
C893 C891
R887
R884
R883
C924
C903
C906
+
L711
R977
CN731
Q726 R832
R926 R929
C949 R941
3
C942 R928
1 R923 C941 R927
Q727
TH703
S721
LAMP
H I J K
J703
NC
USB
J702
RXD
COM
1 5
IC735
C751
R794
3 4
C753 Q713
R831
C752 R793
C826 R823 R810 C812
R827 R796
Q712
R900
5 4
C818
R797
G Q714
IC716 C811
D
R828
8 1
S
Q719
C841
4 3
C840
6 1
C853
C848 CP67 CP66 CP65 CP64
L709
R833
C969
CP68
C880
128 103
1
102
CP42
R881
R882
R880
C901
38 65
39 64
C907
CP51 CP52 CP54
CP53
R892
Ref. No. Address
IC705 6P
IC712 5L
IC713 10O
IC714 7M
S720
IC715 10P
PTT
IC716
IC717 10L
J79-0278-19 B/3
IC718 7Q
IC719 8Q
IC720 6D
L M N O
PC BOARD
TX-RX UNIT (X57-784X-XX) (A/3): CONTROL section
0-11: K, 2-71: E Component side view (J79-0278-19 A/3)
J701
EXT. MIC / EXT. SP
SPG
SP
PTT
D726
INT SP
C793
33C NC INT MIC MIC
C792
5
D725
R702
R930
C987
C706
8
R968
C785
R765
C757 +
Q703
S
D702
D
R764
G
R766
R767
8 5
R718
C783 C797 R781
R748 C802
C730
IC731 1 8
IC714
C847
4 5
1 4
R804
C801
Q718
C934 C795
R733
C933
4 3
R805
Q707 C835
C836
D716
6 1
C833
Q717
R819
8 5 R747
R808
R779 R837
C837 R820 C822
IC730
C778 C838
C917
1 4
R902
R934
CN712
R918
R800 C817 C779
R799
1 10
1 5
IC713
X701
3 4
5 6
R986
Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address
IC721 7E IC733 9C Q713 4K Q723
IC722 5F IC734 5O Q714 4K Q724
IC724 6B IC735 4I Q715 7O Q725
IC725 10D IC737 8J Q716 4J Q726
IC726 8M Q702 6N Q717 8N Q727
4I IC727 4D Q703 6N Q718 7N Q728
IC728 8C Q707 8N Q719 5H Q729
IC730 8L Q709 9O Q720 5H D701
IC731 7L Q711 7O Q721 9Q D702
IC732 7B Q712 4K Q722 10Q D703
P Q R
TH-D72A/D72E
J79-0278-19 A/3
NC
REM
CN701
4
C702
R721
C734
1
R916 R763
C970 R738
R969
C772
5 R741
R736
C773
IC705
R744
1
R818
1
+
IC718
C823
5
C849
C861
C860
Q721
+ +
C870
5
1
IC715
3
4 R850
Q722
Ref. No. Address
Component side
7G D706 7N
6C D707 6O Layer 1
Layer 2
8F D709 8R
Layer 3
10E D716 8M
Layer 4
10F D717 9R
Layer 5
9B D725 4L
Layer 6
9B D726 3L
Foil side
5M D727 9M
6N D740 9Q
3Q
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14