70
TH-D72A/D72E
SCHEMATIC DIAGRAM
X57-784 (A/3) 5/8, X57-784 (B/3) 1/1
U
V
W
X
Y
3.3V
3.0V
-t
INTRTC
MICI
VTX
RTC_SCL
LAMPB
SPI
RTC_SDA
MICG
SPG
32K_SW
KEY_I3
KEY_I2
KEY_I1
KEY_I0
KEY_IT
KEY_I4
PSW
PKD96M
33M
33C
C844
10u
R827
18k
D727
1SS388F
CN712
R799
1k
S 7 0 8
S 7 1 2
S 7 1 3
S 7 2 3
S 7 1 1
S 7 1 9
6
2
7
S
6
1
7
S
S 7 1 0
S 7 1 8
4
2
7
S
4
1
7
S
S 7 1 7
S 7 1 5
S 7 0 9
S 7 2 5
R842
1k
R841
1k
R840
1k
R836
1k
C817
0.1u
C815
4p
C816
4
p
X701
32.768kHz
1
2
4
3
R814
10k
R800
150k
R815
10k
D 7 2 9
D 7 3 0
D 7 3 1
D 7 3 2
D 7 3 5
1 S S 3 8 8 F
D 7 3 6
1 S S 3 8 8 F
D 7 3 7
1 S S 3 8 8 F
D 7 3 8
1 S S 3 8 8 F
D 7 3 4
1 S S 3 8 8 F
R835
1k
R816
1k
R 8 4 8 4 7 0 k
R801
470
R843
1k
R844
1k
D 7 3 9
1 S S 3 8 8 F
R817
1k
C N 7 1 9
1
2
3
4
5
6
CN715
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
C814
470p
Q 7 1 9
S S M 6 L 0 5 F U - F
C848
470p
R833
100k
R 8 3 4
4 7 k
C N 7 1 8
S 7 2 1
S 7 2 2
S 7 2 0
CN713
CN714
I C 7 3 5
T C 7 S 6 6 F U F
1 IN/oUT
2 oUT/IN
3 GND
4
CoNT
5
VCC
R831
47k
C852
1000p
I C 7 1 7
R 2 0 2 3 T
1
32KoUT
2
SCL
3
SDA
4
INTRB
5
VSS
6 INTRA
7 CLKC
8 oSCoUT
9 oSCIN
10 VDD
R988
47k
R989
1M
R990
1k
D741
MA2S728
C976
10u
Q 7 3 0
S S M 6 L 0 5 F U - F
R 9 9 5
R 9 9 6
R720
0
R829
100
CP77
CP78
R830
100
TH703
D 7 3 3
SP
32K
CLKC
POWER SW
PTT
LAMP
MONI
A/B
MENU
MICG
SPI
SPG
MICI
PSW
LAMP
B
KEY_I4
KEY_O0
KEY_O1
KEY_O2
KEY_O3
KEY_I2
KEY_I3
KEY_O4
SPG
GND
GND
MICG
UP
DOWN
RIGHT
LEFT
1
3
A
4
B
7
0
#
D
CHG_TH
9600 TData
FPC ASSY
BATTERY CHARGE
TEMP DET
2-71
0-11
X57-784X-XX(A/3)
D732
D729
D731
MA2S111-F
MA2S111-F
MA2S111-F
PROTECTOR
REVERSE
CURRENT
D 7 3 4 - D 7 3 8
CURRENT
D 7 2 9 - 7 3 3
REVERSE
PROTECTOR
SWITCH
ANALOG SWITCH
SWITCH
CURRENT
REVERSE
PROTECTOR
RTC
REVERSE
PROTECTOR
CURRENT
D 7 3 9
REVERSE
PROTECTOR
CURRENT
GP_BU
33C
KEY_I1
KEY_I0
KEY_O4
KEY_O4
KEY_O3
KEY_O2
KEY_O1
KEY_O0
PTT
KEY_I1
KEY_I0
KEY_O4
PTT
1
2
3
4
5
6
CHG_TH
GND
CHG_TH
CN741
9600 TData
RST_S
1200 TData
1200 TData
6
9
5
2
8
C
TX-RX UNIT(X57-784X-XX)(B/3):PTT SECTION
CHG_TH
R 9 9 5
R 9 9 6
RST_S
K
E
TH-D72A
TH-D72E
NO
NO
NO
NO
NO
0
0
NO
MA2S111F
CN770
CN771
PSW
GND
∗
∗
∗
*
∗
∗
TX-RX UNIT (X57-784X-XX) (A/3) : CONTROL SECTION