Kenwood TK-480 Service Manual page 21

TK-480/481
A B C D
PC BOARD
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
RSSI
AUXTXD
SB
AUDIO
BEEP
8
9
10
Ref. No. Address Ref. No. Address
IC1 IC30
4G
IC2 8R Q5
11
IC3 7F Q7
IC4 5G Q22
IC5 9R D2
IC8 7I D6
12
7H
IC10 D7
IC14 6K D9
13
14
E F G H
-13: TK-481
R419
MONI
R420
R4
R5 R3
LAMP
C197
+
DEO
CN2
4 1
C195
R7 C92
C11
+ C123
24 13
DI9 G
C111
Q7
D
S
C112
IC4
R98
Q22
G
D
S
1 12
+ C109
R86
+
C263 F1
C58
RXAO
C100 R13 R422
CN10
C18
RXAI R11
1 8
IC3
B
4 5
PTTOUT
C196
R32
C10 +
TXAO
R148
PTTIN
CN3
TXAI/MUTE
D18 D17
DI/ANI
Ref. No. Address
4N D10 6Q
9L 9G
D17
5F
D18 9F
6F D19 8Q
9Q
5M
5O
6Q
I J K
VC
C15
C60
C80
R161
+
+
R23
C79
R57
C75
CF1
C62
C55
R49
L M N O
PC BOARD
TX-RX UNIT (X57-5630-XX) -12, -22: TK-480
Component side view (J79-0201-19)
IC30
1 2 3 4
D7
L25
C160
+
C168
L20
XF1
P Q R S
TK-480/481
-13: TK-481
C175
ANT
L30
L31
C166
C40
L29 CN1
L11
+ C12
1
R17
D2
2
IC5
R2
3
C4 R1
R103
Component side
Layer 1
Layer 2
Layer 3
Layer 4
Layer 5
Layer 6
Foil side
1
2
3
4
5
6
7
8
9
10
11
12
13
14