Block Diagram - Kenwood NX-720 Service Manual

NX-720(G)/720
TX-RX UNIT (X57-8230-1X)
SB
50C
MIC
ME
LCDCL,LCDCE,LCDDI
LCDDO
33M IC509(2/2)
TC7WH126FU-F
HOOK
HOOK_RXD1
50C
MKEY
PTT
MBL,BLC,BLED
SP+
Ext SP JACK
SP
J701
FNC5,FNC6
Q502
LTC014TEBFS8
Q503
HR1 MTM981400BF
DC SW
HR2
5V_TXD2
D_RXD2
SB
50MC
DATAI(DI_MI2)
DETO(DEO_AFO)
Q504
LTC014TEBFS8
IGN
/IGN
SP2
SP
78

BLOCK DIAGRAM

33M 33M
Flash
SRAM
ROM
IC503
IC501
POWER,EMG
RLED,GLED
50C
IC511
TC74VHCT244AFK
BUCNT2
IC716(2/2)
TC7WH126FU-F
MKEYO
IC716(1/2)
IC509(1/2)
TC7WH126FU-F
TC7WH126FU-F
MKEYI
33M
CV,THP1,THP2,FWD,REV,
DI,FLDM,TEMP,/OVRB,
/WP,BLVL,MRSW,/INT15P,/EVCS,/BINT
IC515
50C
IC512
PCA9535BS
TC7WBD125AFK
LEVEL SHIFT
SCL,SDA
3.3V/5.0V
I/O
Expander
HORN
F1CNT
F2CNT
F34CONT
50C
FNC1,FNC2,FNC3,FNC4
50MC
RS-232C
Driver
FNC2,FNC4
IC516
ADM202EARNZ
SB
SPAF
AF
AMP
PAAF
IC714
LA4600
INAMT
DC SW
PA
Q709
SSM6N37FE
/PCS_DSP
PSCK_DSP
PLL MOD
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
50C
TXD1
D511
DB2S310 /PTT
I2CCK,I2CDT
5V_TXD2
TXD2
5V_TXD2
IC511
TC74VHCT244AFK
/IGN
F1CNT
IC513
TC7WH126FU-F
FNC1,FNC3
TXDO,RTSO
33M
50M F34CONT
RXDO,CTSO
IC514
TC7WH126FU-F
F2CNT
MM,MM2,/FRST,INAMT,PA,
BUCNT1,BUCNT2,/SAVE,BSCAN
33M
X501
L77-3015-05
IC506
SM5023CNDH-G
VCTCXO
BUFF
18.432MHz
33A 15M 33M
33C
PLD
SD01
PLL MOD
IC508
/PCS_DSP
TC7SH08FU-F
/PCS
SCK1
IC301
PSCK_DSP
TC7SH08FU-F
IC504
BD5329FVE
RESET 33M
IF_DET
RSSI
TXC,RXC,/T_R,/H_L,HSW,DSW,
DDCLK,ASSIST,ASTSW,SBC
MPU
IC507
GPSC
GPS_ALM
RXD2
MIC2
MIC
MOD
LPF
IC701(1/2)
BU7462NUX
ASQAPC
W_/N
SW
Q701
FK330301
ASQDET
BEEP
VOICE
SUM
RXAF
IC711(1/2)
BU7462NUX
33M
IC2
SKY72310-362
33C
X1 50C
16.8MHz
TCXO
PLL
/PCS_RF
P_SCK1
T
R
Q303
2SC5108(Y)F
33A_2
IC304
BU7445HFV
D512
DB2S310
D513
DB2S310
D_
D703,704
DA3S101F
DI
Q703 2SA1832(GR)F
Q704 2SC4738(GR)F
3
LIMIT
SUM
IC703(2/2)
BU7462NUX
3
VCO_MOD
IC702(1/2)
IC712(3/8)
BU7242NUX
R2A20178NP
DAC
BUFF
/EVCS,SCKO,SDOO IC7
R2A
LPF DA
IC702(2/2)
/EVCS,SC
BU7242NUX
BPF D
BUFF
IC705(1/2) IC7
BU7242NUX Q702 BU72
KTC4075E(Y,GR)
PL
IC712(5/8)
R2A20178NP
RXAF2
LPF DAC
IC711(2/2)
BU7462NUX /EVCS,SCKO,SDO
IC712(8/8)
R2A20178NP
DAC
/EVCS,SCKO,SDO
IC713
TC7W53FK(F)
MIC2
MRSW