Kenwood TK-3102G Service Manual page 31

F
TX-RX UNIT(X57-6030-XX)
L9 D4
3.3u MA2S376
D2,4
FREQ.
CONTROL
MOD
D1,3
FREQ.
CONTROL
D3
L8 MA2S376
100n
5R
5C
2nd Local
RX
PABC
5R
5T
B
C312
0.01u(J)
R340
120k(D)
Q300
2SC4617(S)
R:1.5V
ACTIVE
FILTER
TP3
AUDIO
MUTE SW
Q302
R:3.9V
2SK1824-A
WNRC
TIBI
5MS
TI
BUSY
APC
TXD
PTT
TO
B
WNTC
TO VOLUME
MUTE
AFCO
RX
SB
TO AF AMP
X57-6030-XX D5 L18 R25 R26 R27
-10 K,M MA360 47n 100 100 330
-11 K2,M2 1SV214-F NO 150 220 470
G
SCHEMATIC DIAGRAM
C35 L14
*
23n
D5
TX MODULATION
L10 R22
47k
L15
100n
C39
8p
* C34 L13
23n
VCO RX
Q3
T:0V
2SK508NV(K52)
R:1.0V
C305 R303
0.01u(J) 3.3k
AUDIO AMP
R317
ACTIVE FILTER
270k(D)
IC300
NJM2902V-ZB
R312
12k 1 14
C309 2 13
0.01u(J) 3 12
4 11
VDD VSS
5 10
C316 6 9
0.01u(J) 7 8
R:1.8V
R321
R:2.1V
22k
C321 C320
0.033u(J) 0.033u(J)
R326
5.6k(D)
* R508
TH501
3k
C505 R506
1u 22k
* R503
VR500
220k
R28 R503 R508 C34 C35 C37 C38 C41
22 68k 5.6k 18p(J) 7p 33p 5p 4p
82 18k 2.2k 33p(J) 6p(B) 15p(J) 2p(B) 5p(B)
H
VCO TX
Q4
2SC4228(R44)
T:1.4V
RF BUFFER AMP
R:0V
2SC5108(Y)F
C49
0.5p(B)
DC SW
Q5
2SJ243-A
R26
*
DC SW
R28
*
T:0V
R:4.0V
C47
1p(B)
CURRENT
STEERING
C301
0.018u
R304
1M
R302
5.6k
C303
0.1u
QT/DQT
R307
47k
Q303
DTA144EE
DC SW
W:5.0V
N:0V
5MS
BUSY
B
APC
TXD
PTT
ACTIVE T:3.1V
FILTER
R514
Q501
2SC4617(S)
33k
T:2.9V
C509
C507 R510 R515
2.2u4 3.3k 3300p 33k
C42 C44 C45
10p(D) 6p 10p(C)
13p(J) 5p(B) 6p(B)
I
TK-3102G
T:3.8V
R:3.8V
Q6 2SC5108(Y)F
C53 C100
6p 22p
T:1.1V
R:1.3V
Q7
UMC4N
L19
R33
1k
RIPPLE FILTER
Q8
T:4.2V
2SC4617(S)
R:4.2V
T:0.1V
R:4.3V
ACTIVE
FILTER
IC301
NJM2904V-ZB
1 8
V+
2 7
R311 3 6
0 4 5
GND
D300
DA221
R:1.8V
LIMITER
TIBI
ACTIVE
T:3.1V
FILTER
Q502 R519
2SC4617(S)
33k
C514
R520
T:2.9V
33k 0.047u
C511
C512
0.047u 3300p
DC SW
W:0V
Q500
N:5V
2SK1824-A
WNTC
J
RF AMP
Q100
C105
6p
2nd Local
PABC
5R
5T
R320
47k
R318
180k
C338
56p
R323
100k
R:1.8V
AF
5MS
TI
BUSY
B
APC
TXD
PTT
T:0.5V
R523
6.8k
MUTE
AFCO
RX
SB
TO AF AMP
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