Kenwood TK-8102 Service Manual page 47

A
TK-8102
TX-RX UNIT (X57-6920-XX)
1
R403
R402
R401
1.6V X401
VC
GND
L77-1868-15
2
3
SURGE ABSORPTION
CN2
1
2
3
4
5 FNC1
6
FNC2
7
FNC3
8 FNC4
4
9 FNC5
10
FNC6
11
FNC7
12
FNC8
CN3
1 IGN
2 DATAI
DETO
3
TXAFI
4
5 TXAFO
6 EMGMIC
7 RXAFO
ALTI
8
5
RXAFI
9
10 5C
11 8C
6
7
44
X57-692 1/3
B
SCHEMATIC DIAGRAM
1k
1k
1k
TCXO
KDC 4.9V
5C
16.8MHz
XOUT
L403
C411
10u
C412 0.1u
4.8V
10u6.3
RIPPLE
FILTER
R409
100k 4.9V
5C
D4-11
5M
SB
29
30
43
45
46
48
47
49
1
3
7
8
9
5C
8C
C
Q402,403
CHARGE PUMP
R414
0
VOTAGE
DROPPED
D402
R410
Q402
10k
HZU5ALL R418 R419
2SA1832(GR)
Q403
1k 1k
R412 2SC4738(GR)
12k
PLL IC
IC401
MB15A02
PLL SYNTHESIZER
RF AMP
6.9V
Q404
0.7V
2SC4649(N,P)
C418 R415
1000p 0
5C
TX AF
Q1
2SK1824
Scrambler
5C
5.0V
MIC MUTE
R223
5C Q202
4.7k
2SJ243 1k
R222
C210
0.1u
R209
4.9V
240k
R208
1.5k
5C
IDC
HPF
2.4V
IC201
NJM2100V
R207
MIC AMP
750k
AF AMP
C206
Q201
2SC4919 C203 1000p
0.027u
C205
0.1u
D201 D202
DAN222 1SS372
R206
R205
100
T:7.9V
820
OR GATE AGC
8C
3.42V
SB
D
D403,404
RX VCO
R:6.6V
L406 C426 L408
* D404 * *
MA2S304
CV
R421 L405
CV
1.5k
R430
D405,406 100
TX VCO
T:6.4V
D406
L411 MA2S304 * C434 L413
* *
L416 R428 D407
MODULATION
47k
R426
R425 47k
8CL
47k
UL(CPU21)
MOD
PLLE(CPU3)
DT(CPU53)
CK(CPU54)
MIC
W/NO(EVOL2)
W/NI(EVOL1)
R163 47k
IC161
M62363FP
DIGITAL
POTENTIOMETER
AFI(EVOL12)
AFO(EVOL11)
R164 1k
R165 1k
R166 1k
MICMT1(CPU73)
MICEM(CPU74)
LOCK:5.0V
R211
R212
82k 82k
MIC AMP
IC202
SPLATTER FILTER
NJM2904V
8C
C213
8.0V
3300p
R215 R214
68k 68k
C217
10u6.3
DC
BUFFER AMP
AMP
IC203
SUM AMP
NJM2902V
R217 14
1
220k
2 13
- + + -
12
1/2Vcc 3
11
8C 4
V+ GND
10
5
9
6
7 8
1/2Vcc
MOD BUFFA
R228
10k
R77
130k
(D)
BEAT
SHIFT
C90
Q87
2SK1824
R86
18p
0
R:1.2mV
E
RX VCO C430
*
R:1.0V
Q405
2SK508NV(K52) C432
0.5p
R429
2SJ243
Q407
100
T/R SW
C439
*
T:1.1V
Q406
2SK508NV(K52)
C441
0.3p
TX VCO
R227
22k
R78
1k
X86
C87 BEAT
SHIFT
18p
Q86
2SK1824