Kenwood TK-7180 Service Manual page 71

AJ
TX-RX UNIT (X57-6980-10) (B/3)
L9 L10 L11
5T 5T
5T
RF DETECTOR RF DETECTOR RF DETECTOR
D6
D7
HSM88AS
HSM88AS
H:2.81V
L:1.04V
8T
AM1
MI2
AFO
ME
AK
SCHEMATIC DIAGRAM
L12
5T
D8
HSM88AS
R641
TCTL
4.7k
HOR
PA
SPO
AIO6
AIO7
AIO1
AIO2
AIO3
AIO4
AIO8
AIO5
AO1
AO2
DEO
5C
SB
DI
AIO9
RXD2
RXD1EXT
TXD1
TXD2
5C
AL
AUDIO IC
1.44V
C570 R648
C566
2.2k
1u 1u
4.99V
4.41V
AF MUTE
CONTROL
Q419
D416
DTC363EU
DAN202U
AF MUTE SW
Q418
DTC114EE
AF
CONTROL SW
F401
F53-0352-05
R633
0
R636
0
R629
0
R630
0
D412
D413
D414
DA204U
DA204U DA204U
D412-414
SURGE PROTECT
AM
TK-7180
IC417
TA7252AP
6.76V
R30
0
13.61V
CN428
SB 1
SPI 2
SPO 3
4
PA
HOR 5
C583
6
GND
R654
470p
0
CN427
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
IC416
ADM202EARN
9 8
R2OUT R2IN
10 7
T2IN T2OUT
11 6
T1IN V-
12 5 C562 1u25
R1OUT C2-
13 4
R1IN C2+
14 3 1u25
C563
T1OUT C1-
15 2
GND V+
16 1
VCC C1+
LEVEL
CONVERTER
IC (RS-232C)
X57-698 8/9
AN
ANT
EXT.SP
J401
AUXIO6
AUXIO7
AUXIO1
AUXIO2
RXD2
AUXIO3
TXD2
AUXIO4
AUXIO8
AUXIO5
AUXIO9
AUXO1
TXD1
AUXO2
RXD1
GND
ME
MI2
DEO
GND
5C
DI
AFO
SB
SB
SB
SB
SB
SB
NC
67