Tx-Rx Unit (X57-5630-Xx) - Kenwood TK-480 Service Manual

TK-480/481
A B
1
TX-RX UNIT (X57-5630-XX) -12, -22: TK-480
Component side view (J79-0201-19)
2
J79-0201-19
3
4
GND
SQ
D2
D1
5
OPT
5C
LOK
AAC
6
RXEMAI
RXWMAO
RXD
TXD
7
AUXRXD
AUXTXD
SB
AUDIO
BEEP
8
9
10
11
12
13
12
14
C D
PC BOARD
RXAO
RSSI
TXAI/MUTE
Ref. No. Address Ref. No. Address
IC1 IC30
4N
4G
IC2 8R Q5 9L
7F Q7 5F
IC3
IC4 5G Q22 6F
9R 9Q
IC5 D2
IC8 7I 5M
D6
IC10 7H D7 5O
6K D9
IC14 6Q
E F
-13: TK-481
R419
MONI
R420
LAMP
DEO
CN2
4
+ C123
24
G
DI9
C111
D Q7
S
C112
R98
Q22
G
D
S
1
+
C109
R86
+ C263
C58
C100 R13
R422
RXAI
R11
8
1
IC3
5
4
PTTOUT
C10 +
TXAO
R148
PTTIN
D17
D18
DI/ANI
Ref. No. Address
D10 6Q
9G
D17
D18 9F
D19 8Q
G H
R4
R5 R3
C197
+
1
C195
C11 R7 C92
13
IC4
C80
12
R161
F1
CN10
C18
B
C79
C196
R57
R32
C75
CN3
I J
C15
C60
+
+
R23
CF1