Kenwood TK-3401D Service Manual page 25

SCHEMATIC DIAGRAM
TX-RX UNIT (XC1-0072-70)
PLL SYSTEM
5.0V
R775 R776
2-70 0 -
2-71 - 0 C84 0.01u
C83 100p
1
2
CPVDD
3
TEST4
TEST1
5 4
IC2
LE
5 AK1541
DATA
6
CLK
CP1
100
R51
1k
X1
L77-3128-05
3.3V
16.8MHz R10
1 VCoNT 4 100
VCC R4
L1
2 3 0 R8 C16
GND
oUTPUT 4.7u
330 0.01u
(-39)
C22
270p
C23
0.01u
1.65V
33MS
R2 R7 FREQ
330k 0
R9
R3 MOD1
0 220k
PLL_LD
PLL_DATA
PLL_LE
PLL_CLK
4
VOLTAGE PREVENTION
7.5V
L600 L602 F600 +B
B
2.5A
7.5V
GND
F601
CN600
1A
VOLUME
1 VOLOUT
2 VOLIN
R614 16.8MHz
3 SB 820k
(D)
4 BATT
5
6 B
VOLIN
7 VOLGND
8 EN2
Q603
9 EN4
SSM3K127TUT MINVOL
10 GND
11 DC SW(MIN VOL)
EN3 EN2
EN4
12 EN1
EN3
EN1
SELECTOR IC601
XC6209B502P-G
7.4V
4 VIN
CE 3
VSS 2
5 VoUT
NC 1
VOLTAGE REGULATOR(50M) 5.0V
50M
Q601 R:0V
SSM6L36FE T:5.0V
50T
5TC
R:0V
T:3.3V
DC SW(50T)
3
Q602 R:5.0V
T:0V
SSM6L36FE 50R
5RC
R:3.3V
IC606
T:0V
XC6209B332M-G
3.3V
DC SW(50R) 1 33C
VIN
2 VoUT 5
VSS
3 CE
NC 4
VOLTAGE REGULATOR(50C)
IC602
MM1856A50N
VOLTAGE REGULATOR(33R)
50C
1 VIN
VoUT 5
2 GND 5.0V 50C
3 CoNT
NC 4
50CC ON:3.3V
5CC
IC603
XC6209B502P-G
50VC ON:3.3V
4
VIN 50VC
CE 3
50V
VSS 2
5 VoUT
NC 1
5.0V
VOLTAGE REGULATOR(50V)
50V
VOLTAGE DPRO
VOLTAGE REGULATOR 33M
D600
(33M)
RB521S-30-TP 1
VIN 33M
VoUT 5
2 GND 3.3V
3 CoNT
NC 4
Q606
3.3V
SSM3J36TUT
IC604
33MS
MM1856A33N 3.3V
DC SW(33MS)
RESET
ON:0V
33MSC
R613 R616
2
100k 0
IC600
XC61CN4502N-G
IC605
BU4830F
VOLTAGE
DETECTOR(RESET)
INT
3.3V
R609
INT
1k
SB
VOLTAGE DETECTOR(INT)
7.4V
SB
GREEN
(BUSY) BLUE
RED Q605
(TX) LTC014EEBFS8
ON:3.3V
BLUELED
Q600
LTC014EEBFS8 DC SW
(BLUE LED)
GRNLED
Q604
R:0V
LTC014EEBFS8 T:3.3V
BUSY LED REDLED
ON:3.3V
DC SW (RED LED)
L601
PTT PTT/RXD
Side1 PF1
PTT
Side2 PF2
1
GND
Side1
Side2
A B
R53
470
R56
10
C86 0.01u
C87
18
PVDD 100p R28
RFINP 17 C88 2.7V
1k
RFINN
16 100p
VREF2
DVSS 15
C89
VREF1 C30 C41
0.22u L4 15n R30
14
(-71)
13 270p 10p 150k 0.5V
C90
Q2
0.22u C37
2SC5636
3p PLL FIN AMP
R:3.8V
L18 R37
T:0V
CV(A) 270n 10
(-53)
3.3V
RX VCO
R16 R17 R19 R20 RX VCO TUNE C46
L3 Q9 2SC5636
0 0 100 0 L7 D7 5p (B) L16 C60 8p (B)
C68
0.5p
180n BBY66-02V 27n
MCH3914(8)-H
(-14)
(-53)
Q5
RX
ASSIST
L19
TX VCO TUNE TX ASSIST MODULATION 270n (-53)
R38
L8 180n D9 C47 L15 C61 6p (B) 10
(-53) 4p 22n Q6
BBY66-02V
5.0V (B) (-14) MCH3914(7)-H
C66
DC AMP(CV) 0.5p
IC3
CVIN
BD7542FVM
1 oUT1
TX/RX VCO
CVIN VDD 8 TX VCO
2 R31 150k DC SW
IN1-
oUT2 7
CV 3
IN1+
IN2- 6 DC SW(ASSIST)
Q8
4 VSS RIPPLE
Q1 SSM3J36TUT
IN2+ 5 FILTER
SSM3J36TUT
Q7
Q4
SSM6L36FE
Q3 KTC4075E(Y,GR) L17
R27
R24 RE1C001UN
470k 10k
C33
Q8 CONTROL
0.01u
SPEED UP
50C
Q1 CONTROL
AsstSW
+B
50T
50R
50C
R:4.8V
T:0V
C407
39p
0.6V
R400 L401
C404 (-71)
IF SYSTEM 3.2V
330k 3.2V
22p 100n
Q400
KTC4080E-P
C422
R418
R441 C493 0.01u
TRIPLER(2ND LOCAL) 47k (D) 100p
560k
9 32
C497 1ST IF AMP C426
LoIN
R404 0.1u 10 31 C492 100p
BIAS
LoCAP 0.01u
11 NRECTo 30 C491 1u
560k Q403
AGNDIN
12 NAMPo 29 C489 KTC4075E(Y,GR)
NAMPI AGNDoUT
R405 C412 R407 R460 13 1u
1M AUDIooUT AVSS3 28 BUSY
470k 56p 3.3k DISCoUT AK2365A C488
14 VREFD 27
C485 PDoUT IC400
15 DVSS 26 0.22u
1000p RSSIoUT
R449
16 DVDD 25 C487
C413 220k
0.1u
RSSI
1800p
C486
10u
DETAF
50M
MOD1
FREQ
CVADJ
VOLIN
VOLOUT
EN2
EN4
EN3
EN1
50C
50V
INTSPMT
PLL_LD
33M
IC700
EX25064ATA00A
1 8
S
VCC
2 7
Q
3 HoLD 6
D W
4 C 5
VSS
D
R977 10k D
EEPROM
C984 CN907
1000p
D
C905
0.1u C986
1000p
1 75 C911
2 0.1u
74
3 C912
73
D
4 2.2u
CN903 72
CN904 5 71 CN908
C989 6 70
VBAT MINVOL VDD5 R736
PLL_LD
D 7 100
0.1u BLUELED DCSW VSS3 69
RXD
8 R979
BSHIFT VCAP_2 68 R740
APCSW
TXD 10k 4.7k
9 SWDIO 67
INTSPMT TEST_1
OPT3 TXD
10 OPT2 66
VSS1 TEST_2
C983 1000p EN4
11
0.1u VDD1 65
C999 EN2
12
D XIN 64
IC710 EN3
13
NC 63
2F405VGT6KFAA
EN1
14 62
R710 NRST CP23
FM_PDN
15 MCU 61
1k LSDI
PF2
R709 16
HSDDEC 60
PF1
2.2k 17 47k
VOX 59
PTT
C719 1000p 18
58
OPT4 FM_SDATA
C718 0.1u VCC VREF+
19 FM_RSTN 57
VDD2
D VDDA FM_SCLK
20 CML_RDATA 56
1u VSSA
C982 FM_CSN
21 5CC CML_CDATA
C907 0.01u 55
22 CVIN CML_SCLK
C908 1u 54
C906 0.01u R960 23 EMPTT CML_CSN
53
0
R702 24 52
10k (D) 25
51
R711
10k (D)
C970
1000p
C971
0.1u
D
50VC D
33MSC D
5RC
5TC
BATT
RSSI
R901
47k
GRNLED
R902
REDLED
47k
33MA
33MD CN901 CN902
EMPTT
PF1
PF2
3.3V
R703 R777
15k 100k
3.3V
D
R903
22
R720
3.3V X2
0 33MM 19.2MHZ
IC715
L77-3129-05
MM1856A33N BSHIFT IC713
ON:3.3V 1 SM5023CNDH-G
VCoNT
1
VIN OFF:0V VCC 4 1 R905
VoUT 5 INHN
2
GND XTN 6 470k
2 GND 2 XT
3
CoNT oUTPUT 3 VDD 5 R904
C914 3 VSS
NC 4 D
D 0.01u Q 4
D 82
D
VOLTAGE REGULATOR R725
(33MD) CRYSTAL OSCILLATOR AMP D
47k
7.4V
HSDDEC/MOD2
C
(No.RA012<Rev.001>) 2-3
TH_DET
TX(UHF)
PRE-DRIVE AMP
R210 R212
1k 1.8k
D14,D15
C79
R:0V
TX RX SW
8p T:2.47V C216 R217 C219
2.5V
R:2.12V 5p 18 270p
2.1V T:2.09 Q201
RF AMP L26
2SC5455-A
BUFFER AMP 6.8n C81 D15 R254 R202 C202 C207 C208
Q10
2SC5636
C72 C74
(-71) 10p
1SS390 0 0 270p 5p 15p
33p 15p
R:0V
(B) (B)
T:1.7V
R40
150k
4.98V
R:0V
T:4.9V
50T
3.5V
OVER VOLTAGE PROTECTION
DISCHARGE SW
Q203
LTC014TEBFS8
R:0V
T:3.9V
R:0V
T:3.3V
R:3.4V
T:0V
R860
0
R422 L405 L407
4.7k 12n 12n
(-71) (-71)
C439
3p BPF
R:5.0V RX(UHF)
T:0V
50R
XF400
0.6V
L71-0684-05 C442
1p
49.95MHz
R419 R420 C432 L406
220n
120 100 0.01u
1ST
(-53)
MIXER
C447 C450 C452 C456 C458
R423 BB506CFS-E 270p 3p 1p 1p 1.5p
R429
Q404
2.2k
0
0.96V
C444
270p
C437
12p
(G)
2.25V 4.09V
RX BPF RX BPF
TUNING TUNING
R824
BPF1
1k
R970
0
5.0V
C736
270p
3.2V
DC AMP(BPF TUNE)
C853 0.1u
IC717
BU7465HFV
1 IN+
VDD 5
2
VSS
3
IN-
oUT 4
R850 R852
R853
0 12k 12k
C852 1500p
AUDIO BUFFER AMP
R737
100
PTT/RXD
EXTSPMT
EMPTT
INTSPSW
OPTDET
50M
VOLIN
33M
VOLOUT
CP24
$R985
RXI
R983 R984 $R986
1k 3.2V
0 0
C741
10u
R768 C756
C740
VOLTAGE REGULATOR(33B) 10k 1u
0.1u
IC703
7.4V C742
1 R765
VIN MM1856A33N
VoUT 5 270p
27k
2 GND
3 CoNT
NC 4 3.3V
Q707
Q703
UM6K34N SSM6N17FU
37 24 R766
330k LEVEL SHIFT(RXD)
38 23
C725 0.01u 39 DVSS3 22
MoD2 LEVEL SHIFT(TXD) MIC AGC AMP
40 VDEC2
MoD1 21 C763 0.047u R789
MIC
L701 41 XTALN XTAL/CLK R773
R744 AVSS1 20 AF DETECTOR(MIC)
DVDD MICFB LSCR523UBFS8
15 10k D700
42 IC705 19
CDATA RB706F-40 R784 Q705
CMX7141 ALTFB R770 C758 C760
R748 43 18
RDATA 12k
BASEBAND SYSTEM ALT 0.47u
C734 0 44 17 120k 4.7u
SSoUT
SCLK DISCFB
10u TXENA R826 100k
45 DVSS4 DISC 16
SYSCLK2 C761 R785
DVSS2
46 CSN 15
12k
SYSCLK1 R769 0.47u
47 14 Q706
100k
D701 LSAR523UBFS8
48 13
RB706F-40
MIC AGC AMP
AF DETECTOR(MIC)
D703 MC2850
R786
EPSI_CML
EPSCLK_CML 100k
C743 R760 Q704
EPSO_CML R787 1M
47k KTC4075E(Y,GR)
0.01u
C772 47p
MIC MUTE SW
C744 C746
10u C769 4
270p oUT
R774 IN- 3
D 100 0.47u
VSS 2
LSDO 5
D702 VDD
1SS372F IN+ 1
AF DETECTOR(VOX) IC706
BU7465HFV
CML_IRQ
C774
HSDENC
MIC_MT
VOX 270p
33M
PTT/RXD
SB
D E
2-3 (No.RA012<Rev.001>)
D203,D204
ANT SW
FINAL AMP R250 C268 D203 C272 L218 L219 L220
strip line
DRIVE AMP Q208 0 470p RN141S 30p 4T 5T 4T
Q206 C228 RD02MUS1BT112
100p C274 C276 C279
RFM01U7P L211
3.5p 2.5p 2p
D204
4.7n
L207
(-92) (B) (B)
12n RN141S
(-71)
R:0V
T:2.5V
R:0V
T:2.1V
R:0V R:0V R:0V
T:4.9V T:1.6V
T:3.2V
R252
0
R223 R235
560 1.8k
R242 R243 10k
DC SW
470k (D)
IC200 (POWER CONTROL)
BA2904FVM ANT SW
R246
Q210
R237 C236 1 oUT1
10p VCC 8 470k LTA044EEBFS8
150k 2
-IN1
oUT2 7
(D) 3
+IN1
-IN2 6
4
VEE
R238
+IN2 5
150k
(D)
DC SW(APC)
7.5V
Q209
R:0V
DC SW(APC)
T:3.4V RE1L002SN
Q207 DC SW
LTC014EEBFS8
Q205 (POWER CONTROL)
RE1C001UN
APC CONTROL SW
L412
2.20V
C461 Q405
270p 2.70V
BB506CFS-E
C481 L420
R434
R440 C469 C473 C474 C478 6p 8.2n
68
(-71)
1.39V 4.7 270p 3.5p 3p 33p
RX BPF Q405
TUNING
RX RF AMP
RX BPF TUNING RX BPF TUNING R444
470k
RX NOTCH TUNE
C920 0.1u
RXO
CN912 CN913 CN914 CN915 CN916 CN917 CN918 CN919 CN920 CN921 CN922
C921 0.1u
RXI
C922 0.1u
TXO
C923 0.1u
TXI
R991 100
OPT1
R992 100
OPT2
*
R775
R993 100 2-70
OPT3
0
R994 100
OPT4
* R776
R995 100
OPT5 2-71
0
R996 100
OPT6
R997 100
OPT7
INTSPMT
TXO
OPTDET HIGH &
OPTDET HIGH &
MUTE OFF:5.5V
MUTE OFF:2.7V
MUTE ON:0V MUTE ON:0V
R817
0
OPTDET HIGH &
AF AMP MUTE OFF:3.3V
5.0V
MUTE ON:0V
0.1u
C791
AF POWER AMP
IC708 (INT)
Q708 BU7465HFV
IC709
LTC014EEBFS8 NJU7089KV1
1 IN+
VDD 5
2 VSS 1 SD
C795 oUTB 8
3 2
IN- BYPASS
oUT 4 GND 7
1u 3
+IN
V+ 6
4
C792 100p -IN
R809 oUTA 5
DC SW 10k
VOLOUT C786 R800 R804
(EXT PLL)
0.22u 18k 120k
C794 R813
0.068u 82k
DC SW(IC709 SB)
OPTDET HIGH &
SB
MUTE OFF:5.5V
Q714
MUTE ON:0V
2SB1132(Q,R) Q714 CONTROL
LTC014EEBFS8 OPTDET HIGH &
MUTE OFF:2.7V
Q711
MUTE ON:0V
10k OPTDET
WITHOUT 2PIN JACK:3.2V(H)
C775
INSERT 2PIN JACK:0V(L)
0.1u
TXD PTT/RXD
$R989 Q715 CONTROL
50M
R816 1k
PTT/RXD PTT/RXD
MIC MICIN
MICO
R814 27k
OPTDET
50V
J601
TXD_OUT AE
TXD
SB NC
NC
AF POWER AMP(EXT) AF SW AF SW SPO
R802
R790 (EXT (EXT
DC SW IC707 R815
470k SP) SP)
(IC707 TA7368FG
10k Q713 Q716 100
SB)
10 2SK3577-A 2SK3577-A
LIMITER 1 NC1
Q710 PoUT
2SB1694 9 C808 47u
SB 2 VCC
PW-GND
3 NC2 8 C809 47u
PRE-GND C789
4 VIN 7
DC AMP(VOX) VOLOUT R794 PHASE
5 RIPPLE 6 100p
OPTDET LOW &
NF
1.5k MUTE ON:3.2V
C781
MUTE OFF:0V
0.1u
MIC
EXTSPMT C787 0.1u
Q712
Q709 LTC044EEBFS8
LTC014EEBFS8
Q710 CONTROL POP NOISE MUTE CONTROL
OPTDET LOW &
MUTE OFF:3.3V
MUTE ON:0V
F
TP SOLDER
ANT
INT-SP
EXT-SP/MIC
INT-MIC
G