Kenwood TK-2202 Service Manual page 38

TK-2202/2206
SCHEMATIC DIAGRAM
TX-RX UNIT (X57-6870-20)
R9 0
R10 0
R11 0
R5
100k
PLL SYSTEM
IC1
MB15A02
RIPPLE
C30 C40
FILTER
4.84V
D1
470p 4p
R8 C29 L8 C43
MA2S111
C4 0 470p 18n 15p
4.76V
0.01u
R15 R16
R21
220 560 680
R7
100
VR1
R12-7491-05
4.83V
X1
L77-1931-05 R17
L401 F401 R1 R2 R3 C3 1 4 100
4.72V
BATT VC VCC
22k 10k 33k 1u
12.8MHz 0.7V
2 3 R12 C17 C25
BATT L1 R14
GND oUTPUT
4.7u
2.2k 47p 330k 2p 1000p
REVERSE TXCO
Q1
PROTECTION
KTC4082
TRIPLER
CN401
1 B
2 SB
3 SP1
SP2
4
5 GND
6 EN1
7 EN2
8 GND
9 EN3
EN4
10
EN5
11
R436 R404
R:3.70V
0 470k 5T SW
R403 T:3.57V T:4.99V
(D) Q403
CPH3317
100
5V PROTECTION
IC402
XC6204B502MR
D401 5.00V Q404 R:5.01V
5R SW
RB521S-30 1 5 CPH3317
VIN VoUT
2
R:7.56V
T:7.26V VSS
3 4
IC401,402
CE NC
VOLTAGE
REGULATOR/5V
5C SW
IC401
XC6204B502MR
Q405
R:7.28V 4.96V DTA123JE
1 5
T:6.80V R:4.83V
VIN VoUT
2
VSS
3 4
CE NC
L402
VOLTAGE DETECTOR/RESET
IC403 BD4840FVE
R407 1 5
PTT SW1 SW2
VoUT VDD
330k 2
SUB
3 4
NC GND
ON:4.92V ON:4.92V
OFF:0.01V OFF:0.01V
VOLTAGE
DETECTOR/INT
IC404 LED/RED LED/GREEN
BD4845FVE
D403 D404
R405 1 5 B30-2156-05 B30-2157-05
VoUT VDD
330k 2
SUB
3 4
NC GND LED SW LED SW
/RED /GREEN
Q401 Q402
DTC114EE
DTC114EE
5C
RXAFO
T:3.42V
L19
CV R40
D4,7
FREQUENCY 220n
CONTROL
/TX VCO VCO OSCILLATION (TX)
0.72V
C64 VCO/TX
R22 L24 L10 D7 C52 L16 4p C73
0 180n 39n 0.5p
1SV325 180p Q4
2SK508NV(K52) (B)
2.73V
L9
33n
MODULATOR
C50
10p
Q2 TX MODULATION
2SC5108(Y)
PLL IC F_IN AMP
R25 R26 C45 R31 L12 R34 R36
22k 10k 1u 560k 4.7k 270k
R30
R:3.46V
12k L18
R37
220n 100
VCO OSCILLATION (RX)
C65
L11 VCO/RX
D9 C55 L17 5p C74
100n 1SV325 120p 27n Q3
2SK508NV(K52) 0.5p
D5,9
C34
FREQUENCY
CONTROL
/RX VCO
CURRENT
STEERING
QTTCXO QTTCXO
PLL_UL PLL_UL
PLL_STB PLL_STB
PLL_DAT PLL_DAT
PLL_CLK PLL_CLK
B B
5T 5T
OSCIN OSCIN
SP1 SP1
SP2 SP2
5R 5R
5C 5C
EN1 EN1
ADDITIONAL PCB
EN2 EN2
MOD OUT
EN3 EN3
EN4 EN4
EN5 EN5
RX_W/N
R447
4.7k
VCC VCC
VSS VSS
R421
51 25
52 OPTDET 24
1k
AF_CONT
53 23
DTRLOADN STD
54 QTVCO 22
DIR
55 21
TDATA/DTRCLK
56 20
DI/O
57 19
SCLK
58
18
RDF/FD
4.95V 59 17
TCLK/DTRDO
60 16
VCC VCC VCC INT
R419
61 VCC 15
C430
VSS VSS 62 MICROPROCESSOR 14 47k
VSS VCC
CP404 63 13
0.01u GND IC405 XIN
30622MAA-B89GP L404
64 12
GND VSS
65 11
47Kx2 XOUT
66
10 BSHIFT ON:4.95V
RESET
67 9 OFF:0V
68 8
BSHIFT
R420
69 7
GND BEAT SHIFT SW
70 6 47k
BYTE
71 5
EEPCLK
LEDTX LEDTX 72 LEDTX 4
EEPDAT
LEDRX LEDRX 73 3
LEDRX
74 2
SIDE1 SIDE1 PF1 DTMF
SIDE2 SIDE2 75 1 EEPROM
PF2 PCTV
IC406
BR24L08F-W
R415 1
A0 VCC
47k R416 C431 2
A1 WP
47k
0.01u 3
BATT BATT A2 SCL
5T_C 5T_C 4
5R_C 5R_C GND SDA
5C_C 5C_C
RESET RESET
INT INT
RXAFO RXAFO
4.96V
SB SB
PTTSW PTTSW
AF_CONT
OPTDET
5M 5M
4.74V
D101,202
T:1.11V
IC2 TX/RX
UPB1509GV RF SW
100
RF BUFFER AMP 4.6V
1 8 C87 D101 C101 R103 C104
Q6 C81 VCC1 VCC2 2.2V
2SC5108(Y) C78 15p 7 C83 R:1.65V 10p 1000p
2 HSC277 0 39p
IN OUT T:1.05V
C82 R:0.1V
33p 3 6 1000p Q9
IN SW2 2SC5108(Y) T:1.88V
1000p 4 5
GND SW1 RF AMP
3.74V
VCO 1/2 DIVIDER
L202
DC SW/TX VCO
39n
Q5 R:2.84V
DTA143TE
T:0.03V C233
R:4.97V
T:0.59V 2p
(B)
L22
4.0V
R:0.60V
T:4.95V
Q104
DTC114EE
Q7
DTA143TE
DC SW/RX VCO
APC SW
RIPPLE FILTER
Q8
2SC4617(S)
DCSW DCSW
B B
5T 5T
APCSW APCSW
OSCIN OSCIN
SP1 SP1
TH_DET TH_DET
SP2 SP2
5R 5R
5C 5C
C902 R901 MOD IN MOD MOD
1u 4.7k
Q901
2SK1824 GND
RX_W/N RX_W/N
TX_W/N TX_W/N
R316
120k
DTRLOADN DTRLOADN
STD STD
C312
12p
TDATA/DTRCLK TDATA/DTRCLK C315
DI/O DI/O
1u
STD
32
TCLK/DTRDO TCLK/DTRDO 10 DTRLOADN
AGND
TCLK/DTRDO
11 31
TDATA/DTRCLK RXIN
12 30
DI/O RXINO
R306 13 IC301 29
RDF/FD RDF/FD FILTERO
RDF/FD AQUA
1k 14 28
X2 SCLK SCLK SCLK
R422 BEAT SHIFT SW AUDIO PROCESSOR EXPOUT
L78-1411-05 15 27
DIR DIR
1k C432 7.3MHz C435 Q408 DIR RXAFIN
R423 2SK1830 26
Q407 16
XOUT RXAF
2SK1830 5p 0 5p
3.6864 MHz CLK
R426
XIN XIN
0
R301 C302 R304
EXTLIMIN EXTLIMIN
47k 560k C309 C313
0.01u
82p
120p
R310 R313
8 R308
C311 390k 100k
7 AMP3O AMP3O
0
R424 R354 R355 C354 R357
1u
6 47k
D301 10k 10k 0.1u 0
5 RB706F-40
R425 DETECTOR
47k
PCTV PCTV
TXD TXD
QT/DQT_IN QT/DQT_IN
MIC_MUTE MIC_MUTE
RXAFO RXAFO
BUSY BUSY
RSSI RSSI
SB SB
PTTSW PTTSW
AF_CONT AF_CONT
OPTDET OPTDET
5M 5M
TX DRIVE AMP TX FINAL AMP
T:1.88V R:7.68V
T:7.30V
T:4.9V
L104 C120 L107
R108 C108 R112 C110 Q103 R120 Q106
2SK2596 2SK2595
1.5k 39p 18 1000p 27n 0 1000p 27n
RF AMP
Q102
2SC4926YD
L205
68n
C237
5p
(B)
RX LO1
5T
T:2.7V(H)
1.99V(L) R135
150k APC SW
(D)
Q109
C140 IC101 DTA144EE
TA75W01FU
100p
1 8 C146
APC PROTECT OUT1
VCC
R130 2 7 1000p
IN1- OUT-B
150k 3 6
(D) IN1+ IN2- APC SW
5
4
R131 VEE IN2+ Q108
APC SW 2SK1824
R141
Q105 150k
2SK879(Y) (D) 100k
COMPARATOR
R134 (APC)
150k (D)
Q107
DTC114EE
APC SW
5R
MCF
XF201
L71-0619-05
38.85 MHz
C231
oUT IN R219
2 1 0.01u 560
CF201
L72-0973-05
C213
0.1u
R208 C210
PCTV
C320 R319 82k
0.01u W/N SW/TX 470p
56k
Q301
FM IF
DTA114EE
SYSTEM
R322
IC201
TA31136FN
180k
R323
56k
R324 C329 C219
R329 R210 R216
100k 82k 1u 3.3k 33p 120k
R325
IF AMP
Q203
C328 100k
W/N SW/RX 2SC4649(N,P)
R211
390p Q202
DTA144EE
R321 C322 3.3k
SP2
W:0.011V
220k 0.015u
R326 N:4.98V
C325 0
0.1u
C326 R331 C331
1000p 39k 0.1u
RXAFO RXAFI
R330 C330 R446
3.3k 1u 0 ISOLATION
MICO MICI DETECTOR MIC AGC
D303
D302 Q302
R445 RB706F-40 DAN222
R318 2SC4919
0 C317 R328
1.2k
10k
0.1u
R314 C316 R332 C333
15k
10k 0.1u C310 R311 R360 0.1u
0
0.068u 12k
TXD
SB
PTTSW
AF_CONT
OPTDET
5M
ANT SW D103 L117 L118 L119
7T 7T 6T
HVC131
C151
L113 L114 L115 C144 D104 C154 C156 C159
3T 5T 3T 82p HVC131 1000p 10p 12p 7p
ANT SW
RX LO1
L110 C160
5T
56n
33p
ANT SW ANT SW
5R
BPF
R:4.98V
L206
180n
MIXER RF AMP
R220
Q205
Q204 R:2.48V
560 R:4.8V 3SK318 R:4.92V
3SK318
C238 C250 C253
C245 R227 R291 R231
R239 C263 R240 C267 C268
12p 470p 0 0 4p 4.5p 47
47
C243 (B) (B) R:0.75V 10p 0 3p 3p
R:2.48V 1000p R:1.76V (B)
(B) C271
R:0.99V
CN201
PCTV
D205,206
D203,204
RF BPF TUNING
RF BPF TUNING
C334 R343
0.1u 470k
AF AMP
IC302
SP MUTE SW
TA7368F
DC SW R:0.3V(MUTE ON) Q306
7.3V(MUTE OFF)
1 10 CPH3413 C345
Q304 T:0.3V 1 PoUT
R:7.52V
T:7.31V 2SA1362(GR) 2 9 100u6.3
VCC PW-GND
3 8
3 PRE-GND
R336 4 SP MUTE SW
SP2 7 C338 100p
VIN PHASE Q316
C339
1k 5 6 R337 CPH3413
RIPPLE NF
R334
100 10u6.3
47k
C340 Q305
DTC144EE
R:7.3V(MUTE ON) 0.1u
0.3V(MUTE OFF)
Q303
T:7.3V DC SW/SP MUTE
DTC144EE
DC SW/SP MUTE
R345 PTT/RXD
R341 10k
100
R346 100
TXD
R344 1k
SB
PTTSW
AF_CONT
OPTDET
5M L301
ANT
CN13
11p
MIC
MICIN
OPTDET
5MS
AE J301
TXD
NC
SPO
SPI
MIC301