Kenwood TK-701S Service Manual page 28

Synthesized fm two-way radio
Table of Contents

Advertisement

TK-701S
RX Signal Path Diagram
UI3
230mV RMS
MC3359P
RF INPUT SIGNAL
Ql4
IF DET. Mix.SQ
MODULATED+3KHz
2Sc1sis(Y)
To J23-6
J23-10
| BY 1000Hz TONE
NOISE
AMPLIFIER
Te
asa
CD10
Dil
ot2
NSO
845
ci
lox
'S#555
INGOA
INGOA
.
390K
0033p
.
Wy
pt
=
i4-+-44
J23-1
Ql
Ql2
7OmV RF WITH
2 3
ovs
4]
ox,
ty
1
m
NS!
28kl25~-4
2SK241 (GR) -1
SmV RF AT ANT
oT a p39
GOS See ees
ios
oO bY
6
if
MIXER
21.4MHz IF AMPLIFIER
oe
a
47K
oe
1
2
o
eh
we
Or
,
4
UIT
°
co4
moo
uPCl242H
ao
8
ag
CRYSTAL FILTER
L30
0047 tn
f
R40 SO
C108 | Be
Q2)
AUDIO
POWER
AMPLIFIER
21.4MHz
3
WA
f{Peot
Ri
cii2
2SCIBI5(Y)
21F ISB
| 2a
24V
3.7V
OOln
TS 10y I6V
H.P.F
ca
8.0V
7.8V
4
18
7
sy
n>
228
1
ols
is}
ial
13
235
Ps
x
{
20v}
Ov
ov
oO6yy 2.4
\
avn
z
°
3
'
ca
aa
OV
1.9V
13V
OV
OV
67V12.4V 13.4V
a
=f
| NOISE
DETECTOR |
©
oS CI39
f
2
4
5
6
7
8
ba
i]
-
cue
s*
© 7 10
16V
¥
nN
+
=
¢
ion lev Jo
-—}
N
>
To J23-3
bp 3
s
5|
x
»
18
&
&
)
Ul3
+1
x
Ss 3% 2
Reg ,c!28
3
cizs}
|
33
SB
oy
ro)
we
S o
,
I
&
ey
oO
rq
a
ay |
;
S
:
x
a9)
*
2
LIMITE
4
s
t
8
[ar
3
'
mn
0
$s
14
RM.
a
t+
re
e|
&
«
al]
27
a
ey
OSCILLATOR
1.8K
Toy
<
2
RF INPUT SIGNAL
220 vs
Se AION
FAR
2
S
oto
e
of
#
eaves
we
«
r50 7 cls,
PUDLUNIT ci3q |
ci36
MODULATED + 3KHz
= Tres €'26) 9a
[unio Power
in
ca2
BY
8.4y! 6.5Y
5,
Loy
390K | 1 25V
bok
»
0047»
BY 1OOOHz TONE
'
a4
§
Joutpur-4awatts
n
0. in
woe
Sap Tov]
4] >
ee
Oey
C29 027
2.2
iy
4v RMS/40
= bp
z31
o =
=
OTS
4.0v
"Fl ag
Box
|S
|Goem
aev
7
"4
ca4
Q20
z
a
3
w
|[.0047y
3.6VE-
584 | [asomv Re
2SC1815(BL)
:
BP
eT
af
®
=
RS
i
BUSY
SW.
535,
-[
ek
520mV RMS
8
favo
SP901 (42)
&
ef s
ts
ar)
RF INPUT SIGNAL
is)
H
VY
to uor-1
GND
INTERNAL
ais
aig
ov
a
o|
&
ra] as
on
MODULATED * 3KHz
|
!
B2
SPEAKER
cas
2SCISI5(BL)
2SCI8I5(BL)
th
CH
BY 1OO0H2 TONE
328
-
18
00471
AVR
AVR
6
6.3
R54
CFV455D
ci00 22u 25V
ms!
20
WA
4
oaen
220
e288
s25
C1Ot 047
1
44
_
-
.
mV RMS
8 T oS
.6V
]
ime
[od
901
yy
O18
|
RE INPUT SIGNAL
J4 (PLL UNIT)
MODULATED
+ 3KHz
ou
vy PSY
pay
2] Gno
aC)
LAMP
clo2
2SC1815(Y)
H
BY IOOOH2 TONE
3) ESP-H
OPTIONAL
C62
"
"4
_,
AUDIO
AMPLIFIER
|
Volume
contro}
]
EXTERNAL
LSP
ri
2
Q201
L
J26
.0047n
|
[yelume control]
i
L> || ESP-L SPEAKER
8
m7y| a|
2SCtsis(BL)
TS i} com
[>]
L--____.—_
4
]
«
5
CAL
Sw.
adesy
| >
4
D901 | BUSY (GREEN)
PLL UNIT
wo
vires
2
IE
Leal car | 4 ---y g-2903) CALL (YELLOW)
)
b> 4) TX
>
CR NO.
sl
ono
[Xyg 0902]
D902]
TX (RED)
UNIT NO"
C38 { C40}
C41) C42/
C43] cel} c63|
c65|
ces!
ces| ces! c76{c77]
c79|
ca0| cz!
ce3
150 ~1
xe11200 "7
18P | 20P|
43P| 39P|
20P}
I2P|
i2P]
sP
josPe{
—j
ap | 5p
}—]|—|4ap}]—]
5p
ee beat
t2P}
20P | 43P)
39r | 20P|
HP]
P|
ap | — | — | 3p | ae | —|—J1
3p
losp|
ap
J23~-3
J23-4
To
To
8
162 ~ 169 MHz
38
KEY
u200 u200
X61.1200-12
(oP | (6P|
33P] 33r]
16P}
HIP]
VIP | 4P | —JosPi
2P | 3p
jose| —|
3e | —|
4p
168 ~
M
Reris00 nS
SP]
t6P | 33P|
33P|
16P|
IOP;
1oP | 3P | — | — | 2p | 3p | —]|—]|
2p
losp!
ap

Advertisement

Table of Contents
loading

Table of Contents