Kenwood NX-720 Service Manual page 127

TX-RX UNIT (X57-8230-11)
33M 33M
IC501 IC503
Flash
SRAM
ROM
SB
50C
MIC
ME
POWER,EMG
RLED,GLED
50C
IC511
TC74VHCT244AFK
LCDCL,LCDCE,LCDDI
LCDDO
BUCNT2
33M IC509(2/2) IC716(2/2)
TC7WH126FU-F
TC7WH126FU-F
MKEYO
HOOK
HOOK_RXD1
IC509(1/2)
TC7WH126FU-F
50C
MKEY TC7WH126FU-F
MKEYI
33M
PTT
MBL,BLC,BLED
SP+
Ext SP JACK
SP
J701
IC515
50C
IC512
PCA9535BS
TC7WBD125AFK
FNC5,FNC6 LEVEL SHIFT
SCL,SDA
3.3V/5.0V
Q502
I/O
LTC014TEBFS8 Expander
HORN
F1CNT
F2CNT
Q503
HR1 MTM981400BF F34CONT
DC SW
HR2 50C
5V_TXD2
D_RXD2
FNC1,FNC2,FNC3,FNC4
50MC
SB
50MC
RS-232C
DATAI(DI_MI2)
Driver
DETO(DEO_AFO)
IC516
Q504 ADM202EARNZ
LTC014TEBFS8
IGN
/IGN
SB
SPAF
SP2
AF
AMP
PAAF
SP
IC714
LA4600
INAMT
DC SW
PA
Q709
SSM6N37FE
33M
IC506
SM5023CNDH-G
BUFF
/PCS_DSP
PSCK_DSP
PLL MOD 33A 15M 33M
33M
DSP
15M
IC502
/DRST,/HDS2,/HRDY,
/SYMTIM,/DINT,FSDET,
/HINT,/DWUP
MCDIAF,/MCSCKAF,/MCCSAF,
MCDOAF,MCDICN,/MCCSXCN,
HOST_RDY,DSP_ST,MCSCKCN
A0-20,D0-15,/WR,/RD
/CS0,/CS2,/CS3
SCKO,LCDCS,SDDO
SDIO
HOOK_RXD1
BUCNT1 MKEYO
MKEYI
IC716(1/2) 50C
TXD1
MPU
D511
IC507
DB2S310 /PTT
CV,THP1,THP2,FWD,REV,
DI,FLDM,TEMP,/OVRB,
/WP,BLVL,MRSW,/INT15P,/EVCS,/BINT
I2CCK,I2CDT
5V_TXD2
TXD2
5V_TXD2
IC511
TC74VHCT244AFK
/IGN
F1CNT
IC513
TC7WH126FU-F
FNC1,FNC3
TXDO,RTSO
33M
50M F34CONT
FNC2,FNC4 RXDO,CTSO
IC514
TC7WH126FU-F
F2CNT
MM,MM2,/FRST,INAMT,PA,
BUCNT1,BUCNT2,/SAVE,BSCAN
Q4 2SC5383-T111
D14 DA2S101
X501
Rippple
L77-3015-05
50CS
Filter
VCTCXO
33M
18.432MHz
IC2
SKY72310-362
33C
Loop
X1 50C
Filter
16.8MHz
33C TCXO
IC3(1/2)
BD7542FVM
PLL
PLD
CV
SD01
PLL MOD
VCO MOD
150C
IC508
/PCS_DSP
ASSIST
TC7SH08FU-F
/PCS_RF 50C
/PCS
IC3(2/2)
BD7542FVM
SCK1
P_SCK1
Fin
TX:272 - 348MHz
IC301
PSCK_DSP
RX:371.9 - 447.9MHz
TC7SH08FU-F
/T_R
Q303
2SC5108(Y)F
IC504
BPF
X3
BD5329FVE
RESET 33M
CF1
450kHz
50R
BPF
50R
CF2
450kHz
IF IC
IF_DET
BPF
IC303
TK10931VTL-G
33A_2
IC304
BU7445HFV
RSSI
TXC,RXC,/T_R,/H_L,HSW,DSW,
DDCLK,ASSIST,ASTSW,SBC
GPSC
GPS_ALM
D512
DB2S310
G_RXD2
D513
RXD2 DB2S310
D_RXD2
D703,704
IC703(1/2)
DA3S101F
BU7462NUX
Q703 2SA1832(GR)F DI
LPF
Q704 2SC4738(GR)F
33A_2 MM2
MIC2 LIMIT
MI2
MUTE DI_MI2
MIC
SUM MUTE MI1(MIC)
IC703(2/2)
Q705
BU7462NUX
SSM3J15FS
33A_2 MM
MOD
LPF VCO_MOD
IC701(1/2)
BU7462NUX
IC702(1/2)
IC712(3/8)
BU7242NUX
R2A20178NP
ASQAPC
DAC MP
BUFF
/EVCS,SCKO,SDOO
IC712(7/8)
R2A20178NP
LPF DAC DEO_AFO
IC702(2/2)
BU7242NUX /EVCS,SCKO,SDOO
DET
BPF
BUFF
IC705(1/2) IC705(2/2)
BU7242NUX
BU7242NUX Q702
W_/N
KTC4075E(Y,GR) PLD
SW
Q701
FK330301
ASQDET
BEEP IC712(5/8)
R2A20178NP
RXAF2
VOICE
SUM LPF DAC SPAF
IC711(2/2)
RXAF
BU7462NUX /EVCS,SCKO,SDOO
IC712(8/8)
IC711(1/2)
R2A20178NP
BU7462NUX
DAC PAAF
/EVCS,SCKO,SDOO
IC713 IC712(6/8)
TC7W53FK(F)
R2A20178NP
DAC DEO_AFO
MIC2
/EVCS,SCKO,SDOO
MRSW
Q8 EM6M1
Q9 SSM3J15FS
T/R
/T_R
SW
Q11
D16,17
2SC5108(Y)F
RKS151KJ*2
TX: 136 - 174MHz
T/R
BUFF
VCO BUFF
SW
Q10
2SC5108(Y)F
Q6,7
50CS
MCH3914(7)-H
D4,5
1SV325F
50C DC SW
D7,8,9,10,11,12
1SV282-F Q106
D15 HSW EMD5
1SV278F
LPF
Q1: LTC014EEBFS8
DC SW Q2: 2SJ648-A
D2: DZ2J091(M)
ASTSW
50CS
D6,13
1SV305F
BPF 2
Q5
150C
2SC5108(Y)F
IC201(2/2)
BD7542FVM
TV1
IC201(1/2)
BD7542FVM
TV2
Q305 Q201
XF1 3SK318
2SC4215-F(Y)
49.95MHz
1st
IF
MCF
AMP MIX
L207,209
L210,220
F503
80ANT DC SW
Q402
2SA1955A-F
DSW
80T DC SW
Q404
2SA1955A-F
TXC
DCDC
150C
Converter
Q415: 2SC4738(GR)F
Q416: 2SA1832(GR)F
DDCLK
50MC
50C 5V AVR
IC404
XC6209B502P-G
33M
50R DC SW
Q417
EMD5
RXC
33C
50CS DC SW
Q408
EMD5
/SAVE
33A
DC SW
33A_2
Q409
EM6M1
SBC2
15M
136-174 MHz
Q102
IC102
D110,111 L407CDB
2SC3357-A RA60H1317M1A
D107 RKP351KW-1P2
ANT ANT
DRIVE FINAL CPL
SW LPF
AMP AMP
D104
HSM88AS-E
80T
+B
Rev
D105 DET
HSM88AS-E
For
DET
IC103 REV
NJM12904RB1
80T
FWD
APC
MP
/H_L DC SW
Q105
FK330301
D204,205
D206,207
D202,203
1SV325F
1SV283F
TUNE TUNE
Q202
NESG240034
BPF LNA BPF
L215,216
50R
+B DCin
F401
F53-0328-05
GND
SB DC SW
Q403
SBC2 MTM981400BF
80C
8V AVR
IC1
TA7808F-NQ
/BINT Detect
IC402
XC6118C23CMR
DCDC
50M
Converter
IC405
LT1616ES6-PBF
DC SW
Q410
F502
2SA1955A-F
SBC2
D401
3V AVR DZ2J180(M)
IC401
XC6209B332M-G
/OVRB DC SW
3V AVR
Q401
IC409
LTC014EEBFS8
NJM2878F4-33
SBC2
3V AVR
IC407
NJM2878F4-33
GPSC
3V AVR
IC406
XC6209B332M-G
1.5V AVR
IC408
XC6205B152P-G