Kenwood NX-3720, Service Manual

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A
1
2
3
4
5
B C D E F G
(No.RA054<Rev.001>) 2-10 2-10 (No.RA054<Rev.001>)
EXT SP
RF
SPG
SP+
RF POWER MODULE
DRAINBIAS
1
IC601
RFOUTPUT
4
STBY
XC1-183(UHF)
IC201
H O O K / R X D / D - 2
RFINPUT
M E
TX-RX UNIT
12
-
D M / K V L
AF AMP
IN2
8
GA
TEBIAS
R5
CN1
+
P T T / T X D
IN1
1
ANT
SUB UNIT
J1
+
S B
E
-
INT SP
GND
M I C
B L C / D + 2
XC1-182(VHF)
15
S B
J1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
13.6 V(K,K2)
13.2 V(E)
D [ 2 ]
/ K E Y I N T
6 0
I 2 C C K
6 0
S P +
D [ 0 ]
1
D [ 1 ]
1
S P G
S P G
N C
S P +
S P +
I 2 C D T
S P G
D M / K V L
G N D
P _ T E M P
/ P S W
R _ S E T 0
R _ S E T 1
R X D
U S B _ D -
T X D
G N D
N C ( I G N )
/ P T T
U S B _ D +
M E
G N D
G N D
1
J2
BT/GPS
GPS ANT
CN2
1
20
GPS_PWR GND GND GPS_ALM GPS_ANT_SW GPS_P
A_EN
/BT_SHUTDOWN WCLK BCLK BT_AUD_DI BT_AUD_DO RT
S
2
CTS2 RXD2 TXD2 BT_SW GPSBT_DET GND 54M 54M
CN1
1
20
CN5
CN7
CN5
D 7
R S T B
E S D _ G N D
/ R D
CN6
V D D I
2 3
V G
V D D
V S S
V D 1
V 0
1
LCD ASSY
XC3-050
2
1
VCC NC1
oUT2
PP
NC2
oUT1
GND
N C
G N D
G N D
G N D
G N D
S B
S B
S B
S B
D [ 3 ]
D [ 4 ]
D [ 5 ]
N C
5 4 M
N C
3 2 M
N C
1 8 M
N C
G N D
N C
M I C / V B U S
/ C S
L C D R S T
/ R D
D [ 7 ]
D [ 6 ]
/ W R
A [ 2 3 ]
R _ S E T 2
G N D
I G N
S P 2
D E TO
D ATA I
F C N 2
F C N 3
F C N 4
F C N 5
F C N 1
5 0 A C
H R 1
H R 2
G N D
F C N 6
DC Supply
D [ 1 ]
D [ 3 ]
S P G
S P G
N C
S P +
S P +
I 2 C D T
S P G
D M / K V L
E S D _ G N D
P _ T E M P
/ P S W
R _ S E T 0
R _ S E T 1
N C
R X D
N C
U S B _ D -
G N D
G N D
T X D
G N D
G N D
G N D
N C ( I G N )
S B
S B
S B
S B
N C
5 4 M
N C
3 2 M
N C
1 8 M
G N D
N C
M I C / V B U S
/ C S
L C D R S T
/ R D
D [ 7 ]
D [ 6 ]
/ W R
A [ 2 3 ]
R _ S E T 2
D [ 2 ]
D [ 5 ]
/ K E Y I N T
I 2 C C K
D [ 4 ]
S P +
/ P T T
D [ 0 ]
U S B _ D +
M E
G N D
G N D
E S D _ G N D
X V 0
V M
C S B
D 6
D 5
D 4
D 3
D 2
D 1
D 0
/ W R
A 0
E S D _ G N D
1
1 2
G N D
S 8
S 9
S 1 0
S 7
S 6
S 5
S 4
S 1
S 2
S 3
/ P S W
FLEX P
.BOARD
CN3
(KEY
P
AD)
MODULE (BT/GPS) UNIT
XC2-004
(NX-3720H(G), NX-3720(G), NX-3820H(G), NX-3820(G) only)
INTERCONNECTION DIAGRAM