Kenwood TK-2302 Service Manual page 45

TX-RX UNIT (X57-7570-20)
PLL_CLK
C41
PLL_DAT
4p(B)
CP1 2.86V
RK75HA1J101J C33 L8 C47 L12
PLL_STB
18n 33n
470p 15p
PLL SYSTEM IC
Q3 C51
IC1 2SC5636
MB15A02PFV2E1
RF AMP 10p
RECTIFICATION
Q1
CV
KTC4075E(Y,GR)
R7 5.0V
0 4.92V
R12 R15 R18 R20 L9
C6
220 560 680 0
0.01u
4.92V
TXCO
4.48V
F301 X1
L77-3042-05 R13
F53-0324-05
2.5A
L301 R1 R2 R3 C3 1 4 100
BATT VCoNT VCC
22k 10k 47k 1u
BATT 2 3 0.66V
GND oUTPUT
L2 R9 C16 R11 C26 C31
12.8MHz 4.7u 2.2k 330k 2p(B) 0.01u
REVERSE 47p Q2
VOLTAGE
2SC4774
PROTECTION
TRIPLER
5C
B
QTTCXO
PLL_UL
PLL_STB
CN301 PLL_DAT
PLL_CLK
1 B R393 B
2 SB 0
3 AFVOLIN
4 AFVOLOUT R302 0
5 AFVOLGND R303 100
6 EN1
7 EN2 EN1
8 GND EN2
9 EN3 EN3
10 EN4 EN4
11 EN5 EN5
DC SW/5T
Q304
DTB723YE T:5.0V
R:3.78V
T:3.47V
R301
470k(D)
DC SW/5R
Q303
5.0V RT1P141U R:4.84V
L302
VOLTAGE PTT
REGULATOR/5V SIDE1
SIDE2
IC303 PTT
XC6209B502PR GND
Side1
VOLTAGE
REGULATOR/5V
IC304 Side2
RECTIFICATION T:7.35V XC6209B502MR
T:7.22V 5.03V
R:7.6V
T:7.45V D302 1 5
VIN VoUT
2
HRC0203C
VSS
3 4
CE NC
LR LG
R306
D303 D304 180k
B30-2315-05 B30-2314-05
RED COLOR LED
GREEN COLOR LED
IC301
BD4840FVE
Q301 Q302 VOLTAGE
ON:4.88V ON:5.02V
OFF:0V RT1N441U RT1N441U OFF:0V DETECTOR/
RESET
R304
DC SW DC SW 330k
/RED COLOR LED /GREEN COLOR LED
R:3.42V
D3,6
L18 R36
FREQUENCY
CONTROL 270n 100
/RX VCO VCO (RX)
0.75V
C63
L11 D6 C52 L16 5p(B) C70
180n 120p 22n 0.5p
1SV325F
VCO/RX (B)
Q4
2SK1875-F(V)
DC SW/
RX VCO
Q7
RT1P430U
R19 R21 C44 R27 R30 R32
22k 10k 1u 820k 100k 680k
C45 R26
T:3.03V
1u 27k
L17 R33 Q8
D4,8
RT1P430U
FREQUENCY 270n 100
DC SW/
CONTROL VCO (TX)
TX VCO
/TX VCO
C64
L10 D8 C53 6p(B) C71
L15
180n 33n
1SV325F 180p 0.5p
VCO/TX (B)
Q5
2SK1875-F(V)
2ND_LO 2ND_LO
Q6
D9
1SV278F KTC4075E(Y,GR)
RECTIFICATION
MODULATOR
5C 5C
5T 5T
QTTCXO QTTCXO
PLL_UL PLL_UL
PLL_STB PLL_STB
PLL_DAT PLL_DAT
PLL_CLK PLL_CLK 2ND_LO
B B
5R 5R
AFVOLIN AFVOLIN
AFVOLOUT AFVOLOUT
MOD
5M 5M R394
47k
EN1 EN1
R391
EN2 EN2
1k
EN3 EN3
EN4 EN4
EN5 EN5
PTT PTT
SIDE1 SIDE1
SIDE2 SIDE2
PTTSW
61
EN2
62
BATT BATT
EN1
63
DEST1
64
DEST2
65
LD PLL_UL
66
BATT
EEPROM 67
IC305 RSSI
68
BR24L16F-W
BUSY
1 8 69
A0 VCC VOX VOX
2 7 70
A1 WP QTI QT/DQT_IN
IC306
3 6 71
A2 SCL EEPCLK R5F212CCKCMA
4 5 72
GND SDA EEPDAT
R313 73
THDET TH_DET
1k 74
DTMF
R309 75
AVSS
0 76
PCTV PCTV
77
VREF
R310 78
AVCC
0 79
PLLDAT
80 PLLCLK
C413
1000p
5T_C 5T_C
5C_C 5C_C
5R_C 5R_C
RESET RESET
RESET MODE
AFCONT L303
BSHIFT ON:4.98V
INT INT OFF:0V
Q305
2SC4919
LEDRX LEDRX
LEDTX LEDTX
SB SB
4.88V
TX/RX T:0.55V R102
T:2.71V
RF SW R:0V
PRESCALER 10k C108
D10 T:1.76V
IC2 4.85V MC2858
C102
UPB1509GV RF AMP 39p
C89
RF AMP Q11
1 8 2SC5636 39p Q101
Q9 VCC1 VCC2 100p
2SC5636 C78 C81 C84 2SC4926YD
2 7 R:1.8V
IN OUT T:1.62V RF AMP
33p 15p 3 6 1000p
IN SW2
4 5
GND SW1
3.82V
R:0.58V
T:5.1V
L21
R:5.02V
T:0.58V
4.05V
L202 L203
RIPPLE VOLTAGE
FILTER 39n 39n PROTECTION
Q10 R:2.45V
C224 C227
KTC4075E(Y,GR) T:0V
6p(B) 7p(B)
5C 5C
5T 5T
TH_DET TH_DET
DC_SW DC_SW
APC_SW APC_SW
2ND_LO 2ND_LO
B B
5R 5R
AFVOLIN AFVOLIN
AFVOLOUT AFVOLOUT
MOD MOD
BUSY BUSY
DTMF DTMF
W/N W/N
MDSW R340 R342
C339
10k 10k R325
4.7k 1u
RDF/FD Q307
TCLK/DTRDO RT1N441U
SCLK
TDATA/DTRCLK W/N SW/TX
DTRLOADN MOD
DI/O
PTT
DIR R355
TXD
STD 120k
1/2_OSC
C356
R345
C364
1000p 27k C371
12p 10u
DTRLOADN
C367 R357
STD
40
1u 56k
C372
39 R323
1000p
APC_SW 38 1k
10 32
TCLK/DTRDO
LEDTX LEDRX 37 AGND
11 31
RX_SW TDATA/DTRCLK
36 RXIN
12 TCLK/DTRDo 30
TX_SW DI/O TDATA/DTRCLK
35 DI/o RXINo
R348 13 29
OPTDET RDF/FD IC308
34 RDF/FD FILTERo
1k 14 AQUA-L 28
TXDATA TXD SCLK
33 SCLK AUDIO PROCESSOR EXPoUT
15 27
RXDATA RXD DIR
DIR RXAFIN
32 16 26
NC
XoUT RXAF
MCU 31
2TONE
30
NC
C366
29
NC
0.1u
28 1/2_OSC 1/2_OSC 3.6864MHz CLK C374
NC
27
NC R398 1000p
26 AFMUTE
NC 0
25
NC
MICMUTE
24
LED_BLUE C363 C365 C383
23
AF_MUTE 82p 120p 0.1u
22 R349 R352 C369
MIC_MUTE
21 D307 1M 100k 0.1u
AUX1
LIMITER R350 R353
RECTIFICATION
120k 12k
D306
D306
RECTIFICATION D307
QT/DQT_IN QT/DQT_IN KDR731 C370
MC2850
VOX VOX C361
0.1u
W/N
1u
VOX
MIC_MUTE MIC_MUTE
C334
0.01u PTT PTT
C335 OPTDET OPTDET
TXD TXD
10u
5M 5M
X301 BEAT SHIFT SW
5M
L78-1433-05
14.746MHz Q306
C332 R319 C337 2SC4919
R321
5p 0 5p
(B) (B) 10k
BEAT SHIFT SW
SB
LEDRX
LEDTX
RSSI RSSI
PCTV PCTV
AF_CONT AF_CONT
SB SB
R:7.6V
T:1.21V T:6.95V
C110 L102 R114 C120 L105 L108
R106
47n 22n
18 1000p 0 1000p 3T
Q105
Q102
RQA0004PXDQS RD07MVS1BT122
TX FINAL AMP
TX DRIVE AMP
T:4.89V(H)
T:2.58V(L)
5T 5T
R118
2.2k R127
330k(D)
APC
DC SW
C131 IC101
BA2904FVM Q108
100p RT1P441U
5 4
+IN2 VEE
R125 6 3
-IN2 +IN1
150k 7 2
(D) oUT2 -IN1
DC SW
8 1
Q103 R124 VCC oUT1 Q107
2SK1824-A
RT1N441U R132 PCTV
150k
DISCHARGE SW
(D) 100k
C136
B
470p
DC SW
Q106
RT1N441U
5R 5R
AFVOLOUT
MCF
C385 R372
XF201
L71-0619-05
0.1u 0 38.85 MHz
R213 C217 R214 oUT IN R215 C225
180k 0.01u 470 390 0.01u
Q202
2SC4774
C386 IF AMP
0.01u
CF201
L72-0973-05
450 kHz
C208
0.1u
PCTV
C381
R204 C207
390p
R364 R369 C390 82k 560p SB
100k 82k 1u
R363
IC201
100k
TA31136FNG
R361 FM SYSTEM IC
BUSY
0 C382 R367 R373 R207
3.3k
0.015u 39k 220k C215
RSSI
W/N 2p(B)
R365
R209
3.3k
3.3k
Q201
R366 C384 RT1P441U
W/N SW/RX
150k 0.1u
R368 W:0V
C377 N:5V
R356 0
4.7k 0.068u R374 C392 L305
MIC
D308 R370 12k 0.033u
KDR731 Q310
1k 2SC4116(GR)F
MIC MUTE
D308,309
D309 MIC MUTE
KDR731
R371 Q311
2SA1586(Y,GR)F
2.7k
RECTIFICATION
Q308
MIC MIC
KTC4075E(Y,GR)
PTT PTT
OPTDET OPTDET
TXD TXD
5M 5M
RSSI
PCTV
AF_CONT AF_CONT
SB SB
L113 L114 L116
ANT SW 7T 7T 6T
L109 L110 C145 D103 C150 C153 C155 C158 CN13
ANT
5T 7T
82p HSC277 1000p 10p 12p 7p(B)
L115
L112
8T 12n
ANT SW ANT SW
L210
BPF
R:4.82V Q204
LOW NOISE AMP
L206 R:2.41V
Q203 R:4.7V
3SK318
180n R:4.8V
C238 R220 R222 R223 C247 C249 R225 R:1.7V
MIXER
1000p 56 0 0 3p 2.5p 47 C257 R229 C260 C262
C236 (B) (B)
R:0.94V R:2.41V
R216 1000p Q204 39p 10 4p 4p
(B) (B)
3SK318
560
C265 R230
R:0.73V
30p 0
D202,203
RF BPF TUNING
PCTV
D204,205
RF BPF TUNING
SB
R380
470k
AUDIO AMP
MUTE SW
IC309
R:0.25V(MUTE ON) TA7368FG
R:7.73V 7.55V(MUTE OFF) Q315
DC SW
T:9.2V T:0.35V 1 10 2SK3577-A C404
Q313 NC1
PoUT
2SB1694 2 9 100u6.3
VCC
PW-GND MUTE SW
3 8
NC2 Q316
PRE-GND
C396 R379 4 7 C399 2SK3577-A
VIN
PHASE
0.1u 1k 5 6 R381 100p
RIPPLE
NF
150 C400
R377 10u
47k R:7.7V(MUTE ON)
GND
0.16V(MUTE OFF)
T:-1.45V
C402
0.1u
Q314
RT1N441U
MUTE SW
Q312 GND
RT1N441U
DC SW
R388
J301
100 PTT/RXD
MIC
MICIN
CP304
OPTDET
RK75HA1J102J 5M
AE
TXD
NC
SPO
SPI
R385
100
MIC301