Kenwood TM-481A Service Manual page 45

A B C D
TM-481A
PC BOARD
1
TX-RX UNIT (X57-8130-24) (A/2): TX-RX SECTION
Component side view (J79-0316-19 A/2)
2
3
4
5
6
BSB
7
1
8
TXD
R823
IC715
Q715
9
C824
10
10
11
12
J79-0316-19 A/2
13
14
E F G H
F701
+B
C826
FB
R821
GND
R820 C828
C833
Q713
Q707
D710 D712
C815
O R762
IC712
R756
I
Q703
Q702
G
1 8 C766 C764
X701
C772 R759
4 5
C771
R754
UL
25 1
26 100 RESET
TD1
CNVSS
RD1
R777
SCLK
L702
R842
BUSY
R748
5M
R844
R751
R750
IC707
RXD
EPM
CE
50 76
51 75
R815 C769 C765 R760 R755
C809
C805 C768
ADJ
GND
DTMFIN
GND
POWER
C861
C860
C859
CN702
I J K L
IC302
1 2 3
L312
C356 L313
C345
R336
C355
C348
C338 C350
L314
C354
TEMP1
L708
TEMP2 L709
C863
8T
8C
5C
R2
R3
R4
R786
R787
C783 R792
C777
Q706
CV
C858
C789
R791
SQIN
R793
C544
C848
R503
C515
R506
D502
M N O P
PC BOARD
TX-RX UNIT (X57-8130-24) (A/2): TX-RX SECTION
Component side view (J79-0316-19 A/2)
4
C835
R341
R334
1 8
R339
4 5
C70
C856
C851
PC/TV
R535
8R
Q710
R812 R840
C864
C552
R527
C559
R526
C807
C534
AFV
RSSI
C523
GND BPF
R519
Q502
Q R S
TM-481A
1
2
Ref. No. Address
ANT
IC302 3K
3
IC303 8P
IC707 9F
IC708 7E
IC711 6G
IC712 7F
4
IC715 9B
C418
Q502 11N
C417
Q506 8R
Q702 7F
D313
Q703 7F
C422
5
R378
Q704 10I
C416
Q705 10I
Q706 10I
Q707 6F
Q708 10O 6
Q710 10O
Q712 10E
C407
Q713 6D
Q714 5E
7
Q715 9D
C394
D301 7O
C395
R559
D305 8P
D313 5Q
R345
R847 R347
D314 5R
C401 R558
8
C577
D316 7Q
D501 12K
R557
D502 12K
C572
D503 11O
D504 10O
9
D710 6F
D712 6F
10
11
12
Component side
Layer 1
Layer 2 13
Foil side
14