Kenwood TH-D72A Service Manual page 90

A B C D
TH-D72A/D72E
1
TX-RX UNIT (X57-784X-XX) (A/3): CONTROL section
2
0-11: K, 2-71: E Foil side view (J79-0278-19 A/3)
CN769
NC
LCD CONTRAST
D712
C755
3
REM
CN716
33C
C708
4
C710
L701
C722 R975
1 5
IC701 R992
R991
3 4
5
C975 C717
C720
C718
R715
20 V5
R714
V4
V3
R713
V2
V1
6 C763
VDD
VSS
C764
VDD
D[7]
D[6]
D[5]
8 5 D[4]
D[3]
D[2]
IC703
D[1]
D[0]
7
1 4 /WR
A[0]
+ C746
/RES
R980 1 /CS
+ R979
C789
C729
+
C728
C719 R716
8
L708
C786
C787
9
C788
F702
10
D710
11
TX-RX UNIT (X57-784X-XX) (B/3): PTT section
0-11: K, 2-71: E Foil side view (J79-0278-19 B/3)
12
13
14
E F G
PC BOARD
C754
SPG
D713
SP
PTT C735
INT SP
R790
MIC INT MIC NC 33C
R807
R839
R851
R771
R966
C765
C976
1 6 R988
Q730 CN713
CLKC
3 4
D711
CN718
H I J K
NC
D704
RXD
R955
1 4
IC736
CP34
2 3 L706
R998
C742
28 22
R967
21
7 15
CN721
BV
8 14
R750
R749
R973 C761
CN771
C716
CN770
PSW
CN710
CN763
R724
RTS_USB /SUSPEND
CN708
TXD_USB
MAIN_WR
CN707
RXD_USB
CN724 CN725
CN709
CTS_USB
15 KEY_O4
KEY_I3
CN744
CN745
CN743
KEY_I2
CNVSS /RST
33M
LAMP B
GND
R817
PSW
CN741
MICI
CN746
THG_TH CN747
MICG
R801
33TNC_S TXD1
SPG
R740
SPI
R848
KEY_O1
KEY_I4
CN749
CN748
KEY_O0
SAVE2 RXD1
KEY_O2
1 KEY_O3
CN752
R816 CN750
KEY_O2
RTC_SCL
R843
CN719
R829
CP77
D739
R830
CN714
32K
Ref. No. Address
J79-0278-19 B/3
L M N O
PC BOARD
TX-RX UNIT (X57-784X-XX) (A/3): CONTROL section
0-11: K, 2-71: E Foil side view (J79-0278-19 A/3)
R996 R995
GND
TXD
NC
S724 S725
A B
C740
C712 C713
C711
9 7
D715
10 6
12 4
1 3
C737
C739
CP35
S717 S718
3 6
D722
C759
CP36
1 8
IC709
CP37
4 5
CN742
CN761
DC_DET
E
S714 S715
2 5
CN762
CN760
CE
_EMP
CN759
CN758
RXD
BUSY
SET
D714
CN732
CN723
CN722
CN757 CN756 EF_A
TXD
SLCK
CN753
VCC
CN755
CN754
RESET
CNVSS
S709 S710
1 4
CN764 CN711 CN767
RST_S TXD_S
+B
Ref. No. Address Ref. No. Address Ref. No. Address
IC701 5B Q710 9B D718 8Q D733
IC702 5L Q730 10G D719 5Q D734
IC703 7C D704 3J D720 8P D735
IC708 6M D705 3I D721 5P D736
IC709 7L D710 10C D722 6N D737
IC710 4K D711 10E D723 6Q D738
IC736 3H D712 3C D729 6R D739
Q701 4B D713 3E D730 10L D741
Q704 4M D714 8N D731 10L
Q708 8B D715 5N D732 10L
P Q R S
TH-D72A/D72E
J79-0278-19 A/3
S726 S723
C D
D721 D719
S719 S713
9 #
D723
S716 S712
8 0
D720 D718
S711 S708
7 *
CN766 CN736
RXD_S 33TNC
Component side
7R
10K Layer 1
Layer 2
10K
Layer 3
10J
Layer 4
10K
Layer 5
10K
Layer 6
9J
Foil side
9H
1
2
3
4
5
6
7
8
9
10
11
12
13
14