Kenwood NX-203 Service Manual page 108

IC101 IC103
Flash
DSP
SRAM
IC102
ROM
/DRST,DCLK,/SYMTIM,/RSSITIM,
/DINT,/SWUP,FSDET,/HINT
IC401 TC74LCX245FK
MCD1AF,/MCSCKAF,/MCCSAF,MCD0AF,MCD1CN,
BUS SW
IC402 TC7WZ245FK-F /MCCXCN,/MCD0CN,/MCCSRCN,MCSCKCN
D0~15,A0~20,/RD,/WR,/CS0,/CS2,/CS3,/CS4/HDS2,/HRDY
/LCDRST
TXD0
RXD0
IC703
RTS0
33M
M62364FP-F(7/8)
CTS0
DSR
LCDCNT
DAC
/PTT
IC1 /UDET
NJM2130F3-ZB
RXD3
ENC1
–10V
ENC2
ENC3
ENC4
/BINT
/PSW
ASQDET
VOX
VOL
BATT
PFKEY
SB2 5A
BLC
LCD Back Light
MM
SCSW
AVR
BLC
D3,4,7,8 /AMT
STSW
Q1 2SA1362-F(GR)
EXAMT
Q2 KTC4075E(Y,GR)
INAMT
Q3 SSM3K15TE(F)
BEEP
BL_SB
TONESW
/MNDNU
5UC
Q415
EMD12
DC SW
SBC
Q414
EMD12
DC SW
33A
+B
SBC
IC703
M62364FP-F (3/8,4/8)
TV1
DAC
TV2
RSSI , THP , VAGC , CV , S-DET
/EMG , /PTT , Side_1 , Side_2,Side_G , IFC ,
5RC , 5TC , /DSW , /APCSW,SBC , /T_R ,
ASSIST , SDO1 , SCK1 , PLD
TO DSP
IC106
RTC
RV5C386A
I/O Expander
IC701
X101 32.768kHz
CN710 26pin Option Board
X102
18.432MHz
SM5023CNDH-G
IC107
VC
33M
TCXO
33A 15M 33M
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)
ASIC
IC108
/SCSW
AMT
IC704
TC75S51FE(F)
RXAF
LPF
LED-G
IC707
TC7W53FK(F)
LED-R
Q702
SSM3K15TE(F)
TONE
SW
SDO0,SCK0
/EVCS
TONESW
IC706 IC710
TC75S51FE(F) TC75W51FK(F)(1/2)
MIC
LPF SUM
/RINT
32K
I2CCK,I2CSDA
IC705 IC705
TC75W51FK(F)(2/2) TC75W51FK(F)(1/2)
MOD
/OINT
LPF LPF
IC404
XC6204B332D
33M AVR
IC717
Q402 SSM6N16FE-F
XC9235A15CM1
DCDC
15M /PSW
Q401 SSM6N16FE-F
IC406
/BINT
XC6204B332M
33A AVR
SCTAM1
Q413 2SA1955A-F
Q412 SSM3K15TE(F)
31BU
Q409
2SA1955A-F
Q410
SSM3K15TE(F)
SB2
BATT
5A
DCDC
-10V
IC403 LM2682MMX
50U
D705 IC711
RB706F-40 TC75W51FK(F)(1/2)
Rect AMP
ASQDET
APC
IC703
M62364FP-F(8/8)
DAC
DO
INAMT
EXAMT
IC713 IC703 IC703
TC75W51FK(F)(2/2) M62364FP-F(6/8) M62364FP-F(5/8)
SUM DAC DAC AMP
IC408
TC75S51FE(F)
STSW
IC715
AMP
VOX
TC75S51FE(F)
OPT9
AI from VGS MUTE
D706
Rect
IC714 KDR731
TC7W53FK(F)
IC709
TC7W53FK(F)
OPT6
VOX
IC716
AO to VGS
AMP TC75W51FK(F)(2/2)
IC712 IC716 Q707
TC7S66FUF TC75W51FK(F)(1/2) 2SJ243-A
MUTE AMP MUTE
/SCSW MM
AGC
D703,704 KDR731
Q705 2SC4738(GR)F
Q706 2SA1832(GR)F
TCXO_MOD
IC710 IC703 IC703
TC75W51FK(F)(2/2) M62364FP-F(1/8) M62364FP-F(2/8)
SUM DAC DAC
VCO_MOD
DI
L401 , D406 , D405
IC407 LT1616ES6-PBF
DCDC
+B
Converter
SBC
D408
1SS301F
DCSW
Q408 IC414
SB1
EMD12
XC61CC5602NR
RESET
IC416
S-812C31BPI-G
DCSW AVR
DCSW
D412
1SS301F
CN403
SBC
+B
Q403 2SJ648-A
Q404 SSM3K15TE(F) SB1
33A
DCSW
VOL
IC708 XC6209B502P-G
ENC1
AVR
ENC2
ENC3
ENC4
AVR
IC411
CN23
5UC
NJM2880U105ZB
6_KEYO2
6_KEYO1
6_KEYO0
6_KEYI0
+B Q406 2SB1132(Q,R)
6_KEYI1
Q407 UMG3N
AVR
Q405
SSM6N16FE-F
BL_SB
IC413
INAMT TPA6201A1DRBR
IC409
TC75W66FK-F
EXAMT CN405
IC412
TPA6201A1DRBR
MSW
/UDET
/PTT
PFKEY
RXD3
50U
Q4 SSM3K15TE(F)
Q5 2SJ347F
MUTE
MSW
Volume
Selector
knob
KEY
Matrix
(6key)
6key
Back Light
EMC
MSW
SSW
PTT
PF
OPT
5V
TXD
RXD
NC