Kenwood TK-7180 Service Manual page 54

A B C
TX-RX UNIT (X57-6980-10) (A/3) Foil side view (J72-0930-19 A/3)
14
26
GND
1 NC
D703
Q701
Ref. No. Address
Q701
Q702
D701
D702
D703
TX-RX UNIT (X57-6980-10) (C/3)
Foil side view (J72-0930-19 C/3)
D E
SB AUXO2 AUXO1 AFO GND
AUX
RXD1 TXD1 DI MI2
I/O9
D708
D702
R705
Q702
C701
D701
C702 C704 C703
Ref. No. Address Ref. No. Address
6C D704 7G D711
6D D705 7F D712
7D D706 6G D713
6D D707 6G
6C D708 6E
R300
C299 +
1 5
IC302
3 4
R331
J72-0930-19 C/3
F G
PC BOARD
J701
AUX AUX AUX AUX
DEO
I/O5 I/O4 I/O3 I/O2
AUX
GND TXD2 RXD2 GND
I/O8
D713 D707 D706
R713 R704 R703
D705 D704
R702 R701
J72-0930-19 A/3
6H Layer 1
Layer 2
6H
Layer 3
6F
Layer 4
Ref. No. Address
IC302
Component side
Layer 1
Layer 2
Layer 3
Layer 4
H I
TK-7180
AUX
25
ME
I/O1
27
GND
AUX AUX
13
I/O7 I/O6
D712 D711
R712
R711
Component side
Foil side
11E
Foil side
J
1
2
3
4
5
6
7
8
9
10
11
12
13
53
14