Kenwood NX-740H(V) Service Manual page 31

SCHEMATIC DIAGRAM
TX-RX UNIT (XC1-0010-10 (NX-740H(K), NX-740H(V)(K)), XC1-0010-21 (NX-740(M)))
5C
R24 R25 R28 R33
0 0 390 0
3.22V
C15
0.01u
C25
C13
0.01u
100p
C26
100p
1 R21
CPVDD PVDD 18
10 C35
2
TEST4 RFINP 17
10 PLL-IC 1000p
3 C27
PLL_LE TEST1 RFINN 16
IC2
C28 100p
4 AK1541
LE VREF2 15
CP1
PLL_DATA 5 0.22u
PLL_CLK DATA DVSS 14
C29
6
VREF1
CLK
RK74HA1J101J 13
0.22u
R22
PLL_UL
PLL_PDN2 R8 10k C31
100
270p
C32
X1
0.01u
L77-3128-05
1.65V 3.14V
1 VCoNT R10
VCC 4
100
16.8MHz
L1
R11 R19 C24
2 GND
9 oUTPUT 3 4.7u
0 1.2k 0.01u
(-39)
R4 10k
C6 1000p
IC1
4 oUT R16 FREQ
IN- 3
56k
VSS 2
5 VDD
IN+ 1
TC75S51FE(F)
R5
0
R16
56k
5M
TO PANNEL PCB
8
SURGE TXRX
D705
CN700 D702 D708 PROTECTION
DA221 DA221 DA221 SB
1
2
3 SP- ASSIST VOLTAGE
DC AMP
4
5 SP+ CN1 CN2
6
CV
L700
LEDM
7
L701
8 MBL
L702
9 REDLED
L703
10 GRNLED
L704
11 BLULED
R706 0
12 KMO1
R707 0
7 13 KMO2
R708 0 KMO3
14
TO DISPLAY
15 R717 0 KMI1
UNIT
R709
16 0 KMI2 ASTC
CN1
R710 LSDO
17 0 KMI3
33MS
R711
18 0
R705 0
19 LEDI
BUCNT1
R712 0
20 LECE
TXD
21 R713 0 LECL BUCNT2
R704 LELH MKEYO
22 0
PTT
R714
23 0 LERE
5MS
24
R715
25
MIC
0
26 5M
R701
6
27 0 HOOK
28 R702 100 PTT
29 R703 1k MKEY
R976
30 R716 POWER 5M
0 47k
MKEYI
33MD
HOOK/RXD
5C
DETO
FOR OP BOARD TEST PAD
5M
5
TXAFI C743
TXAFO C738
SURGE
CN702
PROTECTION RXAFO C737
D700 D704 D707 D710
DA221 DA221 DA221 DA221 RXAFI C736
DETO
33C
CN703
CN713
FNC_1 M1MUTE
FNC_2
CN704 CN709 AGC
FNC_3
Q701
FNC_4
CN705 CN710
FNC_5
FNC_6
CN706 CN711
FNC_7
CN722
FNC_8
CN720
L705
CN719
IGN
CN718
DATAI
4 CN717 5C
DETO R734
CN716 4.7k
TXAFI
CN715
TXAFO R738
M2MUTE
CN714 1k
EMGMIC
CN712
RXAFO
CN708
ALTI ALTI
CN927
RXAFI
CN928
5MS
33MS
DATAI
TXRX
FNC_1
F704 FNC_6
C703 0.01u
5.01V F53-0317-15
3 IC700
TC7WBD125AFK
R727
1 oE1
470k I/O EXPANDER
VCC 8
2
A1
oE2 7
3 19
B2
SCL P1_2[3] 12
B1 6
4 GND 20
SDA P1_1[3] 11
A2 5
21
VDD P1_0[3] 10
IC702
/INT15P 22 PCA9555AHF
INT VSS 9
CP701
23
A1 P0_7[2] 8
I2C LEVEL
24
SHIFTER
A2 P0_6[2] 7
100k*2 CP702 100k*4
1 8
2 7
3 6
4 5
CP703
2
100k*2
HORN
3.3V LEVEL SHIFTER(RXD0/CTS0)
33MD
TC7WH126FU-F
IC701 5V LEVEL SHIFTER(TXD0/RTS0)
1 IC703 5.01V
F2CNT G1
VCC 8
2 A1 1 G1
G2 7 VCC 8
CTS0 3 Y2 2 A1
Y1 6 G2 7 CTS
4 GND 3 Y2
A2 5 Y1 6 RTS
RXD0
4 GND
TXD0
1 CN701 CN707 C710 0.01u A2 5
CN721
TC7WT126FU-F
TXD0
A B C
RX VCO R:5.27V R:1.71V
L11 (86) C72
1p C89 6p
L4
4.7u C69 R58 C80 L31 Q5 C95 0
D12
100p 0 (14) 1p R70
1SV325F 47p
100n
R50
470
CV(A)
R51 68k
3.26V
C58 Q2
Fin Filter 15n
1000p 2SC5636 L18
L7 SSM3J15FS
(-71)
Fin AMP
20p R:7.40V
C51
Q9
KRX102U L39
R:0V
T:7.38V
TX VCO
R69
L9 (86) C91 1k
4.7u
T:3.76V T:0.96V
8p
C67 R57 D9 C75 L30 (14) C96 R71
Q7
0 150n
47p 100p 1p 0
1SV325F
100k
16.8MHz L15
R61
L28
MODULATION
CONTROL
9.06V Q10
CN941
KTC4075E(Y,GR)
RIPPLE FILTER
9CL
TRIPLER
C517
2ND LOCAL C512
39p
R513 22p
330k
L501
Q500 (-71)
3.22V 100n
KTC4080E-P
R504
IC728 560k
IC3
TC7W53FK(F)
BD7542FVM C520
7.41V
10u
Q3 CoMMoN 1
1
VCC SSM3J05FU-F 8 VCC
8 C521
INH 2
2 0.1u
- + 7 CH0
7
R54 R55 VEE 3
3 + -
6 CH1
6 R519
4 10k 0 GND 4
VEE 47k
5 A 9
5 BIAS
IC727
ASSIST FILTER C515 (D)
Q4 TC7W53FK(F) 10
R40 1k NRECTo
2SK1824-A 0.1u
C505
R510 R515 CoMMoN 1 11 NAMPo
8 VCC
100k 3.3k 12
56p INH 2 NAMPI
7 CH0
13
VEE 3 AUDIooUT
R520 1M
6 CH1
14
3.3V LEVEL SHIFTER(MKEY/HOOK) GND 4 C516 1000p DISCoUT
R595 C593 R597
5 A
15 PDoUT
220k
68k 270p 3.3k R521
RSSIoUT
16
DETAF
D721 DB2S310 R977 4.7k R975
470k CN935
DETAF
IC724 IC725
IC500
TC7WH126FU-F
TC7WT126FU-F BU7465HFV
R501
5 A2 5 A2 1 IN+
GND4 GND4 100k VDD 5
6 Y1 6 Y1 2 VSS
R:3.29V
Y2 3 Y2 3 A:3.3V
7 G2
7 G2 D:0V 3 IN-
A1 2 A1 2 oUT 4 RSSI
8 VCC
8 VCC
G1 1 G1 1 R503 0 R509 R512
C506 12k
R500 12k CN500
C973 0.1u
1500p
10
DETAF AMP
5V LEVEL SHIFTER(MKEY/PTT)
R:4.98V
Q704
DETO AMP
KTC4075E(Y,GR) R777
R:1.68V
120k C764
0.033u
R765 C761
0
4.7u
1u R745 82k
1u R764 18k
1u
1u
3.27V
R748
0 D712 D713
R802
MC2858-T111 1SS372F
0
R739 C754 MIC/AFO AMP
R747
820 1u
IC706
100 39p C753
NJM2100V-ZB
2SC4919-S
R758
1
8 AFOUT_2
R742 C746 R749 330k 2
- +
0 7
0.1u 2.2k 3 R796 C976
HSDO_0 R832
C742 R740 + - R829
6 33k
1.64V 4 1u
0.1u 22k 0
5 R800 C783 BEEP_0
33k 0.1u
C744 C759 C977
0.1u R816
0.1u C760 1u 220k 1u
MOD2_LSDI
RXAFI_0
LSDO_0
ALTI
DATAI_1 C781 DISCFB
0.1u
MIC_11
R783 Q705
MOD2
33k DATAI_0
SSM3J05FU-F MOD2
R785
0
MOD1
R827 R833
R823
100k 100k 100k
R761
R769 FNC1 R798 C803 C807 C809
CN725
100 C765
0 1k 100p 100p 270p
100p
FNC6
R757
C766
470
R762 R770 100p
FNC2 25
C767 VBIAS
100 1.63V
0 26
AUDIo
R771 100p
5MS R813
27
0 C768 AUXADC1
R809 100k 28 BASEBAND IC
R772 100p FNC3 10k AUXADC2
29
100 C769 J700 AUXADC3 IC709
0 100p 3.30V 30 CMX7241
RTS_FNC3 R750 SP2 AUXADC4
6
C770 1 31
R751 0 AVDD
11
100p
HORN ALERT SW HR1 7 32
AUXDAC1
R744 R752 0 2
R773 FNC4
12 33
47k 100 C771 AUXDAC2
2SJ645 8
34
3
Q702 R774 DATO 100p AVSS2
13
35
100 C772 9 R807 AUXDAC3
4
Q703 100p 1k 36 AUXDAC4
R775 FNC5 14
C987 10
470 C773 5
LTC014TEBFS8
15
1000p 100p
DATAI
C774 D-Sub15
GND
RS232C DRIVER
R755 0
0.022u
IC704 CN724
C994
RXD
9 R2oUT 5.01V C775
SB 1000p
R2IN 8
10 TXD 100p C802
T2IN
T2oUT 7 5V LEVEL SHIFTER(TXD2) 10u
11 T1IN C747 1u 10
C800
V- 6 C796 R825 33BD
C748
12 R1oUT IC705
10u 0.1u 10
C2- 5
1u 10 C801
13 R1IN 1 INB
C2+ 4 VCC 5
C749 470p
14 T1oUT 2 INA R658
C1- 3 1u 10 3.30V
15 3
GND C750 GND 2.2k
V+ 2 1u 10 oUTY 4
16
VCC
C1+ 1 C757 0.01u
ADM202EARNZ
TC7SET08FU-F
D E F G
DRIVE AMP
T:8.92V
R:0V
2.63V T:3.37V T:2.42V
CN4
BUFFER AMP COMMON AMP (-71) (-71)
D16 L302
6.83V C301 L300 L301
2.53V
5.17V 15n 10n (-92)
2SC5108F/Y/ RN142S R:3.37V 150p 12n
0.74V C108 R80
2SC5108F/Y/ T:0V Q300
Q11 C101 C103 Q12
RD00HVS1-T113
18p 0 RN142S
18p 5p D17
T:2.42V
R73
0
22n
R:3.17V L317
T:0V
CN301
C371 C374
7p
22 (-71)
8p
R359 L316
27n
7.41V
9CL
8.11V
33MS 33MS
IC502
XC6209B332M-G
1 VIN
VoUT 5
2 VSS
3 CE
NC 4
CN502
CN937
R:2.21V
R:3.14V
R:8.75V MIXER
C527 R:2.47V
0.01u R536
XF500
R:0.64V
CN936 L71-0684-05 R542
270k
C528 100p 49.95MHz
Q503
LoIN 32 C539 R538 100 C550
C529 100p Q501
LoCAP 31 0.01u 120 0.01u
C534 1u KTC4075E(Y,GR)
AGNDIN 30 3SK318
FM-IC BUSY
C535 1u
AGNDoUT 29
AK2365A
IC501 AVSS3 28
L710 C530
VREFD 27
0.22u
DVSS
26
C531 10u
DVDD
25
C532
R540
0.1u R:0.73V
18k D500 Q504
A:3.3V
RB706F-40
D:0V C548 R546 KTC4075E(Y,GR)
0.01u
C544 0
1000p
Q502
2SC2412K
CN503
SQIN
R850 120k (D)
33MA_1
R889
TEMP_2
FM_SDATA
12k
FM_SCLK 15k
CN740
R892
FM_CSN
3.31V
FM_RSTN 3.29V
FM_PDN
ASTSW VCC
RESET
CN741
R890
0
CN727
CP705
TXD0
RXD0
CN728 SRST
1k
37
FNC_2
(RXD0)
CN729 38
SWO C843
VSS2
0.1u
CN938 39
D C844
VDD3
CN730 LSDO LSDO 1000p 40
SWCLK
LSDO
HSDO 41
HSDO
CN731 SWDIO R879 0 42
33CC
43
R880 0
5CC
CN732 44
R836 SQIN R877 1k
SQIN
45
33k 100k JTAG RSSI R878 1k
RSSI
BATT 46
BATT
CVIN 47
CVIN
48
BOOT_1
R973 HSDO
49
TEST_1
0 50
TEST_2
51
C845
VSS3
0.1u
52
R848 R857 C833 D C846
MOD2_LSDI HSDI VDD4
PLL_DATA 1000p 53
0 0 0.1u
PLL_DATA
PLL_LE 54
PLL_LE
PLL_CLK 55
PLL_CLK
56
PLL_PDN2
PLL_PDN2
PA R933 57
0
PA
AMP_SW 58
AMP_SW
LSDO_0 59
9TC
BEEP_0
BSFT 60
BSFT
61
C847 VSS4
0.1u
D C848 62
VDD5
R873 1000p 63
KMO3
KMO3
0
R865 R881 64
R859 R863 KMO2
LSDO KMO2
0
0 0 47k KMO1 R883 65
KMO1
0
KMI1 R884 66
0 KMI1
GPIoB 12
KMI2 R885 67
R846 47k KMI2
0
GPIoA 11
KMI3 R886 68
KMI3
RXENABLE CN726 C829 R864 R868 0
10 BEEP 69
TXD2
2.2k 3.3k TXD2
VDEC1 9 0.068u
70
RXD2
RXD2
IRQN 8
C851 71
VCAP_1
RESET 7
2.2u
72
CP704 D
BooTEN2 6 CML_IRQ VDD6
BooTEN1 5 XIN
X700
47k
L77-3129-05 D
EPSCSN 4
R997 100 1 VCoNT 4
EPSo 3
VCC
R998
100 19.2MHZ
EPSCLK
2
R999 100 3
2 GND
EPSI 1 oUTPUT D
3.29V
100 C831
0.01u 3.31V
R840
L706 IGNITION
Q706
LTC044TUBFS8
33BD 19.2MHz AMP
IC710 D
IC713
3 VoUT
SM5023CNDH-G
VSS 2
1 INHN BATT
XTN 6
DETECT
2 XT
VDD 5 R897
4 VIN R872
3 VSS
CE 1
Q 4 82 R891 F53-0317-15 1k
XC6221B332N-G 1M
D F703
C990
CML_XTAL R855 D
0.01u 82
H I J
VHF(HK)
(-92) 0-10
(-92) 136-174M
L303 (Ver2)
L305 C313
VHF(M)
8.2n 47n 136-174M
150p 0-21
(Ver2)
IC300
*R980
0-10
(136-174MHz)
(Ver2)
0-21 *R983
(136-174MHz)
POWER MODULE (Ver2)
R310
4.7
COUPPLER
* L310
3216
C339
0.1u
APC
C340
IC301
BA10358F 1000p
1 R329
VCC
8
2 0
- +
7
3
+ -
6
4
VEE
5
R334
100k
R322 R325 R327 R330 D301
0 47k
0 0 1SS355
R:9.04V
LNA
R564 R565
CN504
6p 1p
0 0 R570 CN505
C562
R557 R562 C571 C573 C577 L510 56
Q506 R:7.6V
1000p (-92) 22n
82 0 470p
R:8.47V
R:0.91V
C585
R:2.28V 3SK318 R579
470p
0
CP706
R558
47k
9C
82k
IC503
R:9.06V
9
DVDD BA10358F
VIN1 4
10 1
Q505 VSS VoUT1
IC715 3 VCC
TV1_IN 8
LTC014EEBFS8 11 AK2331 2
AVDD VoUT0 R571
2 - +
7
R908 12 150k 3
VREF VIN0 1 + -
6
47k
4
R909 VEE
5
47k
C872
EVOL/DAC
1u
R912 AFO
0
SP2
TEMP_2
TEMP_1
CN926
D
R952
C900 82k
1u
R:3.29V
CN943
D R928
R949
SP_MUTE
10k
4.7k
CN747
VDD12 144
C898 R953
NC
143
CML_IRQ
D 1u 82k
CML_IRQ 142
BATT_INT R:3.29V
CN944
BATT_INT 141
R927 POWER
R944
POWKEY 140 PA
1k IGNIN
IGNIN 4.7k
139
R652
BooTO
138
47k
D REDLED
REDLED
137
AMP_SW
GRNLED
GRNLED
136
BLULED
BLULED 135
SRST
SRST 134
SWO
SWO
133 CN754
9.06V 9C
NC
132
9C
VDD11 CN752
131 Q709
9R 2SB1694
VSS9 9R 2
130
R:9.06V
D
NC 129
NC 128
STM32F405ZGT6
SIM2 127
IC714 *
SIM1
126 LTC014EEBFS8
D
SP_MUTE
SP_MUTE Q707
125
9RC
M2MUTE 4.9V
MIC2MUTE
124
M1MUTE
MIC1MUTE SBC CN755
123
33BC
CN753 Q710
33BC 122
9T 2SB1694 5C
VDD10 121 9T
T:9.00V
VSS8
120
D CN750
NC
119 CP708
FNC_3(RTS0) RTS0
118
CTS0 Q708 3.3V
FNC_4(CTS0) LTC014EEBFS8
117
R934 CN751 1k MBL CN756
MBL 116 9TC R940
0
LEDM
10k
LEDM 115
NC 114
CML_EPSI 5C
CML_EPSI
113
Q711
CML_EPSO
CML_EPSO LTC014EEBFS8
112
CML_EPSCLK LTC014EEBFS8
CML_EPSCLK 5CC
111
CML_SSOUT
CML_SSOUT
110
SWCLK 33BC
SWCLK
109 33BA
SBC
33MA
5MS
5M
33MD
33MD_CLOCK
FB
BATT_INT
RXD
RESET
D
D 33MD
TXD OVER VOLTAGE
DETECT
3.1V
Q712
KTC4075E(Y,GR)
Q713
R929
47k
R930 47k
33MD
33C
R931 47k IC726
XC6221B332N-G
EEPROM
CN742
IC716 M95512-RDW6TP 33CC LTC044EEBFS8
1 CE
VIN 4
1 S
VCC 8
2 Q
HoLD 7
3
W CN933
R938 2 VSS
C 6
4 47k VoUT 3
VSS
D 5
R939
3.28V
47k
C887 1000p 33C
K L M N
R980 R983 R994
-
0 0
- 0 -
R351 R352
0 0
R350 R353
0 0
D305
C353
L407CDB C359 2p C363 4p R356
Forward Power
3216 3216
1000p
D306 C354 * L313 * L314
L407CDB 1000p
3216
Reverse Power
3216
3216 3216 3216
TEMP DETECT
9T T:0.79V
T:8.95V
Power rectifier
D307
R341 HSC277 REVP
RB706F-40
0
D304
D308
R342 R345 FWDP
RB706F-40
0 0
CN506
L516
(-92)
56n
C597
1000p
R:3.64V
C590 C592
4p 3p
C599
470p
R583
TV1_OUT
0
R582 APC
0
C588
470p
R581
22k
IC719 AF AMP LA4600
R956
2.2k
Q714
SSM3K05FU
C913
0.22u
R955
2.2k C911
0.22u
Q715
SSM3K05FU
Q720
J701
LTC014EEBFS8
C926
1000p
13.6V 13.6V F701
Q719
F53-0327-15
2SJ645
oUT IN 1
IC717
TA4809BF
Q718
R960
KTC4075E(Y,GR)
1k
5.0V
IC721
TA7805F-NQ
Q716 CN929
SSM3J05FU-F 5M
IN 1
OUT
2
R996
0
D
3.3V
SSM3J05FU-F CN757
33BA 33MA
Q717
33MD
RESET
Q723 XC6120N302N-G
Q721 5M
5MS SSM3J05FU-F
1 NC
IC722 VIN 4
BATT_INT
BD4740G
1 NC
VCC 5
2 VSS
2 SUB VoUT
3
IC723
3 GND
C961
VoUT 4
CN932
0.01u
R971
D
Q722 0
LTC014EEBFS8
33MD
IC718
MM1856A33N
L709
1 VIN
VoUT 5
2
GND
3
CoNT
NC 4
D D
D
O P Q
(No.RA028<Rev.001>) 2-1