Tx-Rx Unit (X57-6910-Xx); Schematic Diagram - Kenwood TK-7100 Service Manual

A
TK-7100

TX-RX UNIT (X57-6910-XX)

1
R403
R402
R401
1.6V X401
VC
16.8MHz
GND
L77-1868-15
2
SURGE ABSORPTION
3
CN2
1
2
3
4
5 FNC1
6
FNC2
7
FNC3
8 FNC4
9 FNC5
10
FNC6
11
FNC7
4
12
FNC8
CN3
IGN
1
2 DATAI
3 DETO
4 TXAFI
TXAFO
5
EMGMIC
6
RXAFO
7
8 ALTI
9 RXAFI
10 5C
11 8C
5
X57-6910-XX C304 C305
-20 K,M 146-174MHz 330p 330p
-21 M2 136-162MHz 390p 390p
X57-6910-XX C388 C426
-20 K,M 146-174MHz 4p
-21 M2 136-162MHz 6p
X57-6910-XX C440 C471
-20 K,M 146-174MHz 7p
-21 M2 136-162MHz 6p
6
X57-6910-XX C605 C607
-20 K,M 146-174MHz 22p
-21 M2 136-162MHz 27p
X57-6920-XX L354 L355
-20 K,M 146-174MHz 50n
-21 M2 136-162MHz 67n
X57-6910-XX L409 L410
-20 K,M 146-174MHz 27u
-21 M2 136-162MHz 270n 270n
X57-6910-XX L415 L418
-20 K,M 146-174MHz 4.7u
-21 M2 136-162MHz 100n
X57-6910-XX R378 R410
7
-20 K,M 146-174MHz 0 8.2k
-21 M2 136-162MHz 10
42
X57-691 1/3
B

SCHEMATIC DIAGRAM

1k
1k
1k
TCXO
4.9V
KDC
5C
XOUT
L403
C411
10u
C412
0.1u
4.8V
10u6.3
RIPPLE
FILTER
R409
100k
5C
D4-11
5M
SB
29
30
43
45
46
48
47
49
1
3
7
8
9
5C
8C
C367 C369 C373 C386
100p 4p 4p 24p
150p 0.5p NO 27p
C427 C429 C434 C435
27p 8p 1p 470p 10p
12p 4p 2p 33p 5p
C516 C517 C518 C601
10p 7p 9p 8p 12p
12p NO 18p 10p 18p
D603 D604
2p XB15A709 NO
1p NO XB15A709
L356 L406 L407 L408
50n 50n 27u 27u 27n
67n 67n 270n 270n 39n
L411 L412 L413 L414
27u 27u 27u 39n 4.7u
270n 270n 68n 270n
R355 R361 R372 R374
33n 470 47 220k 180k
68n 1k 56 120k 120k
R423 TH351
220 NO
10k 330 B57331V2104J
C
Q402,403
CHARGE PUMP
R414
470
VOTAGE
DROPPED
D402 R410
*
Q402
HZU5ALL R418 R419
2SA1832(GR)
Q403
1k 1k
R412 2SC4738(GR)
10k
PLL IC
IC401
MB15A02
PLL SYNTHESIZER
RF AMP
6.9V
Q404
0.7V
C418 R415 2SC4649(N,P)
1000p 0
5C
TX AF
Q1
2SK1824
Scrambler
5C
5.0V
MIC MUTE
R223
5C Q202
4.7k 2SJ243
1k
R222
LOCK:5.0V
C210 R210
0.1u 18k
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
820
OR GATE AGC
8C
3.42V
SB
D
D403,404
RX VCO
R:6.5V
L406 C426
D404 * L408
* *
MA2S304
CV
L405
R421
CV
1.5k
R430
D405,406 100
TX VCO
T:6.4V
D406
C434 L413
L411 MA2S304 * *
*
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)
R211
R212
82k 82k
MIC AMP
IC202
SPLATTER FILTER
NJM2904V
8C
C213
3300p
R215 R214
68k 68k
C217
10u6.3
8.0V
DC
BUFFER AMP
AMP
IC203
SUM AMP
NJM2902V
R217 14
1
220k 13
2
- + + -
12
3
1/2Vcc
11
4
8C
V+ GND
5 10
9
6
8
7
1/2Vcc MOD BUFFA
R228 R227
10k 22k
R77
130k
(D)
BATT
DETECT
BEAT
SHIFT
X86
C90
Q87
2SK1824
R86
18p
0
R:1.2mV
E
C430
RX VCO
R:0.8V
5p
Q405
C432
2SK508NV(K52)
0.5p
R429
Q407
100
2SJ243
T/R SW
C439
6p
T:1.1V
Q406
2SK508NV(K52) C441
0.5p
TX VCO
R78
1k
C87 BEAT
SHIFT
18p
Q86
2SK1824