Pc Board; Tx-Rx Unit (X57-8130-Xx) - Kenwood TM-281A Service Manual

A B
TM-281A
1
2
3
4
5
6
7
8
IC715
9
10
11
12
J79-0316-09 A/2
13
30
14
C D

PC BOARD

TX-RX UNIT (X57-8130-XX) (A/2): TX-RX SECTION
-10: K -21: M2 -22: M3 -23: M4
Component side view (J79-0316-09 A/2)
R820
Q713
BSB
1
TD1
RD1
R777
R842
R844
TXD
RXD
R823
EPM
Q715
C824
C809
10
CN702
E F
F701
+B
C826
FB
R821
C828
C833
Q707
D712
D710
R762
O
IC712
R756
I
Q703
Q702
G
1 8 C766 C764
X701
C772 R759
4 5
C771
R754
25
26
SCLK
BUSY
IC707
CE
50
51
R815 C769 C765 R760 R755
C805 C768
ADJ
GND
GND
POWER
G H
1
GND
C815
UL
1
RESET
100
CNVSS
L702
R748
5M
R751
R750
76
75
C777
DTMFIN
I J
2
C
R336 C
C338
C
TEMP1 R828
TEMP2 R829
8T
8C
5C
R2
R3
R4
R786
R787
C783 R792
Q706
C
C789
R791
SQIN
R793
C848