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Kenwood TM-642A Service Manual page 37

144/220 mhz fm multl bander
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j
--------------------------.
l.u
AMP
AODfA
I
~
I
C
B
I
Ml C
---------~---
L
N
0
XS4
-
31 30-1
I
0
I SPLAY UNIT
A/3
r---------------------------------------------------------
X54- A/3
I C1
IC2
ON
/
SV
OFF/OV
H040471'3A32H
L78LR058-FA
Q2
Q3, ... 5
,
101
01
'5
'
2581
1 1
'I
(5)
OTC114EU
'-4A1 1
2
IC1
H040471'3A32H
03, ..
0101-105
ICJ.-&
·
TC4S11F
or
SC14511F
02
-
MA720
Q1
2SA1
H5
(6.
7)
i-
-,:;;-o:--
i
I
(X52~s3u1-~0-00
)
I
I
I
I
I
TX-RX
UN
I
T
A
.--------------------
1
I
I
OP
TI
ON
T
X-R
X U
N
I
T
·-
~~~~~~~~,~-=-=~:-:-~~~
51
830-2025-05
830-2048-05
830-2053-05
p
R
T
SCHEMATIC DIAGRAM
TM-642A
XS4-31 30- I
I
DISPLAY UNIT
C/3
~------------------------------------------------------------------,
I
C201
MSMS2&SGS-V1K
IC202
MSM52E.SGS-V1K
r---------,
TlC-AX UNIT
C
~~~0
~~~-~·
i:
-<:--------------------
220MHz
TX-AX
U
NIT
I
X~7-38
1
0
-1
0
)
'
._
~.;....:;...;..:::-~~~~~
X54-
C/3
IC201, 202
IC203, 206
I C204
IC205
LCD
-
M.SMS 26 SGS-V1
K
-
TC451 1 F or SC14S11F
TC74HC73AF
-
NJM78L05UA
SIGNAL
LINE
COMMON DC LINE
2
4
6

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