Block Diagram - Kenwood NX-203 Service Manual

NX-203
Control unit (X53-4590-14)
IC101
Flash
ROM
IC401 TC74LCX245FK
BUS SW
IC402 TC7WZ245FK-F
/LCDRST
33M
M62364FP-F(7/8)
LCDCNT
IC1
NJM2130F3-ZB
–10V
LCD Back Light
D3,4,7,8
BL_SB
EMD12
EMD12
+B
TV1
TV2
5RC , 5TC , /DSW , /APCSW,SBC , /T_R ,
ASSIST , SDO1 , SCK1 , PLD
92

BLOCK DIAGRAM

IC103
SRAM DSP
IC102
/DRST,DCLK,/SYMTIM,/RSSITIM,
MCD1AF,/MCSCKAF,/MCCSAF,MCD0AF,MCD1CN,
/MCCXCN,/MCD0CN,/MCCSRCN,MCSCKCN
D0~15,A0~20,/RD,/WR,/CS0,/CS2,/CS3,/CS4/HDS2,/HRDY
IC703
DAC
ASQDET
SB2 5A
AVR
BLC
Q1 2SA1362-F(GR)
Q2 KTC4075E(Y,GR)
Q3 SSM3K15TE(F)
TONESW
/MNDNU
Q415
DC SW
SBC
Q414
DC SW
SBC
IC703
M62364FP-F (3/8,4/8)
RSSI , THP , VAGC , CV , S-DET
/EMG , /PTT , Side_1 , Side_2,Side_G , IFC ,
TO DSP
IC106
RTC
RV5C386A
I/O Expander
X101 32.768kHz
CN710 26pin Option Board
SM5023CNDH-G
IC107
33A 15M 33M
/DINT,/SWUP,FSDET,/HINT
TXD0
RXD0
RTS0
CTS0
DSR
/PTT
/UDET
RXD3
ENC1
ENC2
ENC3
ENC4
/BINT
/PSW
VOX
VOL
BATT
PFKEY
BLC
MM ASIC
SCSW
IC108
/AMT
STSW
EXAMT
INAMT
BEEP
5UC
LED-G
LED-R
33A
DAC
SDO0,SCK0
/EVCS
/RINT
32K
I2CCK,I2CSDA
/OINT
IC701
X102
18.432MHz
VC
33M
TCXO
IC105
XC6109C29AN-
RESET 33M
IF_DET
IC711 Q704
TC75W51FK(F)(2/2) LTC4072E(Y,GR)
BPF AMP
ASQAPC
LPF LPF
IC702 IC702
TC75W51FK(F)(1/2) TC75W51FK(F)(2/2)
/SCSW
AMT
IC704
TC75S51FE(F)
RXAF
LPF
IC707
TC7W53FK(F)
Q702
SSM3K15TE(F)
TONE
SW
TONESW
IC706 IC710
TC75S51FE(F) TC75W51FK(F)(1/2)
MIC
LPF SUM
IC705 IC705
TC75W51FK(F)(2/2) TC75W51FK(F)(1/2)
MOD
LPF LPF
AI fro