Kenwood NX-700 Service Manual page 94

BS
NX-700/700H
TX-RX UNIT (X57-738X-XX) (A/2)
SB
IC715
LA4425A
13.54V
1.34V
6.38V
R831
0
PA
HOR
C810
470p
12 AIO6
C598 1000p
9
AIO6
AIO7
C599 1000p
AIO7
AIO1
C600 1000p
AIO2
C601 1000p
RXD2/DI
AIO3
C602 1000p
TXD2/AUXIO9
AIO4
C603 1000p
AIO8
C604 1000p
AIO5
C605 1000p
R654
AIO9
0
AO1
C606 1000p
TXD0
AO2
C607 1000p
RXD0
ME
MI2
DEO
C608 100p
C609 1000p
DI/RTS
AFO
C610 100p
F501
2A
9
MI1
ME
94
X57-738 (A/2) 15/16, X57-738 (B/2) 1/1
BT
SCHEMATIC DIAGRAM
CN705
1 SB
2 SPI
3 SPO
4 PA
5 HOR
6 GND
TX-RX UNIT (X57-738X-XX) (B/2): D-SUB25
D901
J701 LINE
PROTECTION
(BER CK)
EXT.SP
D902
LINE
PROTECTION
(BER DT)
CN600 CN901
30 AUXIO6/BER CK 1
29 AUXIO7/BER DT 2
28 AUXIO1 3
27 AUXIO2 4
RXD2/DI
26 5
25 AUXIO3 6
TXD2/AUXIO9
24 7
23 AUXIO4 8
22 AUXIO8 9
21 AUXIO5 10
AUXIO9/CTS
20 11
19 AUXO1 12
18 TXD0 13
17 AUXO2 14
16 RXD0 15
15 GND 16
14 ME 17
13 MI2 18
12 DEO 19
11 GND 20
A
10 50C 21
DI/RTS
9 22
8 AFO 23
7 SB 24
6 SB 25
5 SB 26
4 SB 27
3 SB 28
2 SB
29
A A
NC/RSSI
1 30
OVER DC
SUPPLY
PROTECTION
BU
D903 D907 D911
LINE LINE LINE
PROTECTION PROTECTION PROTECTION
(AUXIO1) (AUXIO3) (AUXIO8)
D904 D908 D912
LINE LINE LINE
PROTECTION PROTECTION PROTECTION
(AUXIO2) (AUXIO4) (AUXIO5)
A
R902
100
R903
100
R904
470
R905
470
R906
470
R907
470
R908
470
R909
470
R910
470
R911
470
R912
470
OVER DC
R913
SUPPLY PROTECTION
470
L901
A
A A L902
REVERSE REVERSE
CURRENT CURRENT
PREVENTION PREVENTION
A
(SB) (SB)
A
Q901
QSX6 QSX6
R901 R914
470 470
DC SW DC SW
A
(AUXO1) (AUXO1)
OVER DC
SUPPLY
PROTECTION
9
BV
13
C911 100p
12
C912 100p
24 27
C913 100p
13
23 13
25
C914 100p
25
12
10 12
C915 100p 24
24
11
22
23
C916 100p
23
10
9 10
22
C917 100p
22
9
21 9
21
C918 100p
21
8
8 8
20
C919 100p
20
7
20
19
C920 100p
19
6
4 6
18
C921 100p
5
5
17
17
3
4
C909 100p
4
16
16
3
3
2
15
C910 100p
15
2
2
14
19
6
1
26
A A
25
5
17
16
15
Q902
A
OVER DC
SUPPLY
PROTECTION
BW
J901
9
MI1
ME