Schematic Diagram - Kenwood TH-D72A Service Manual

A
TH-D72A/D72E
1
LCD ASSY
2
3
C 7 24 0. 1u
C 7 25
C 72 6
C727
C 7 1 7
C 7 18
4
LCD CONTRAST
CN769
F 7 0 1
0.5A
J 7 0 3
Vbus
D-
D+
NC
5
GND
6
J 7 0 2
TXD
RXD
GND
COM
7
66
X57-784 (A/3) 1/8
B

SCHEMATIC DIAGRAM

C N 7 0 3
JP_WR
JP_A0
JP_D0
JP_D1
JP_D2
JP_D3
JP_D4
JP_D5
JP_D6
JP_D7
1u
1u
1u
1u
1u
3 . 3 V
I C 7 0 1
LCD OP AMP
-10V
C 7 2 3
1 0 0 p
5 . 0 V
L706
R 7 1 2 0
R 7 1 1 0
C 715
D 7 0 4
L705
1u
R S B 1 2J S 2
D 7 0 4 , 7 0 5
SURGE
PROTECTION
DC
Q 7 0 4
SWITCH
2 S J3 4 7 F
C 7 3 8
470p
3 . 3 V
C714
0.1u
C713
3
7
R710
V- T I N
2
0.1u 8
100 T o U T R o U T
R709 1
9
C 1+
R I N
100
I C 7 0 2
ADM3101E
RS-232C
DRIVER
C
TX-RX UNIT (X57-784X-XX)(A/3) : CONTROL SECTION
R 7 2 6
0
C 7 6 5
0 . 1 u
C 7 4 8
0 . 1 u
C 7 4 7
C 7 4 6
1 0 0 0 p I C 7 0 3
L M 2 6 8 2 M M X
1 C 1 -
C 7 4 5
2 . 2 u 1 6
2 C 2 +
3 C 2 -
4 V o U T
DC/DC
CONVERTER
3.3V AVR
3 . 3 V
1
D C D
2
R I
3
G N D 1
4
D +
5
D -
6
R725
V D D
7
1k
REGIN
R 9 7 2
0
I C 7 0 8 , 7 0 9
ANALOG
SWITCH
I C 7 0 9
C759
T C 7 W 5 3 F K ( F )
1 C o MM o N 0.1u
V C C
2 I N H 8
C H 0
7
3 V E E
C H 1
6
4 G N D
C P 3 5
A
5
I C 7 0 8
T C 7 W 5 3 F K ( F )
C758
1 C o M Mo N
V C C
8 0.1u
2 I N H
C H 0
7
3 V E E
C H 1
6
4 G N D
A
5
D
/LCD_RST
JP_WR R 7 6 1 0 /LCD_WR
R762 0 A[0]
JP_A0
JP_D0 R 7 5 3 0
R 7 5 4 0
JP_D1
R 7 5 5 0
JP_D2
JP_D3 R 7 5 6 0
JP_D4 R757 0
JP_D5 R 7 5 8 0
JP_D6 R 7 5 9 0
JP_D7 R 7 6 0 0
L708
2 .2 u 1 6
N C 4 . 7 V
8
C 1 +
7 R 7 3 4
V IN
6
4 7
G N D
5
LCDCNT
Vbus_DET
TXD_USB
C P 3 3
RXD_USB
CTS_USB
C P 3 4
RTS_USB
N C 1 0
2 1
N C 9
2 0
IC 7 1 0
N C 8
CP2102SX0567
1 9
N C 7
USB DRIVER
1 8
N C 6
1 7
N C 5
1 6
N C 4
1 5
C N 7 6 3
R 9 8 5
/SUSPEND
1 k
RST_USB
232B_S
TXD_EGPS
C P 3 6
RXD_EGPS
SKY_SW
TXD_COM
C P 3 7
RXD_COM
E
D[0]
D[1]
D[2]
D[3]
D[4]
D[5]
D[6]
D[7]
33C
47C
33C
33C
LAMPB