Kenwood NX-300 Service Manual page 103

IC101 IC103
Flash
DSP
SRAM
IC102
ROM
/DRST,DCLK,/SYMTIM,/RSSITIM,
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
IC703
33M
M62364FP-F(7/8)
LCDCNT
DAC
IC1
NJM2130F3-ZB
–10V
SB2 5A
12key Back Light
ASQDET
AVR
BLC
D1,2,5,6,9,10
Q101 2SA1832(GR)F
Q102 2SC4617(S)
Q103 SSM3K15TE(F)
SB2 5A
LCD Back Light
AVR
BLC
D3,4,7,8
Q1 2SA1362-F(GR)
Q2 2SC4617(S)
Q3 SSM3K15TE(F)
BL_SB
TONESW
Q415
EMD12
DC SW
SBC
Q414
EMD12
DC SW
+B
SBC
IC703
TV1 M62364FP-F (3/8,4/8)
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
X101 32.768kHz
CN710 26pin Option Board
X102
18.432MHz
SM5023CNDH-G
IC107
VC
33M
TCXO
33A 15M 33M
/DINT,/SWUP,FSDET,/HINT
TXD0
RXD0
RTS0
CTS0
DSR
/PTT
IC105
/UDET
XC6109C29ANN
RXD3
ENC1
RESET 33M
ENC2
ENC3
IF_DET
ENC4
/BINT
/PSW
IC711
TC75W51FK(F)(2/2)
BPF
VOX
VOL
BATT
ASQAPC
PFKEY
LPF
IC702
TC75W51FK(F)(1/2) TC75W51FK(F)(2/2)
BLC
ASIC
MM
SCSW
IC108
/AMT
STSW
/SCSW
EXAMT
INAMT
BEEP IC704
TC75S51FE(F)
RXAF
/MNDNU
LPF
5UC
LED-G
IC707
TC7W53FK(F)
LED-R
Q702
33A
SSM3K15TE(F)
TONE
SW
DAC
SDO0,SCK0
/EVCS
TONESW
IC706
TC75S51FE(F) TC75W51FK(F)(1/2)
MIC
LPF
/RINT
32K
I2CCK,I2CSDA
IC705
TC75W51FK(F)(2/2) TC75W51FK(F)(1/2)
MOD
/OINT
LPF
IC701
KEY Matrix
(12key)
IC404
XC6204B332D
33M AVR
IC717
XC9235A15CMN
15M DCDC
IC406
XC6204B332M
33A AVR
Q704 D705 IC711
2SC4617(S) RB706F-40 TC75W51FK(F)(1/2)
AMP Rect AMP
LPF
IC703
IC702 M62364FP-F(8/8)
DAC
Q701 2SA1832(GR)F
MUTE
AMT
IC713
TC75W51FK(F)(2/2) M62364FP-F(6/8)
SUM
STSW
OPT9
AI from VGS MUTE
IC714
TC7W53FK(F)
IC709
TC7W53FK(F)
IC710 IC712
TC7S66FUF TC75W51FK(F)(1/2)
SUM MUTE
/SCSW
D703,704 RB706F-40
Q705 2SC4738(GR)F
Q706 2SA1832(GR)F
IC705 IC710 IC703
TC75W51FK(F)(2/2) M62364FP-F(1/8)
LPF SUM DAC
DI
L401 , D406 , D405
IC407 LT1616ES6-PBF
DCDC
Converter
SBC
D408
Q402 SSM6N16FE-F
1SS301F
DCSW
/PSW
Q408 IC414
Q401 SSM6N16FE-F SB1
EMD12
XC61CC5602NR
RESET
/BINT
IC416
S-812C31BPI-G
DCSW AVR
SCTAM1
Q413 2SA1955A-F
Q412 SSM3K15TE(F)
DCSW
31BU
D412
Q409
1SS301F
2SA1955A-F
Q410
SSM3K15TE(F)
SBC
Q403 2SJ648-A
Q404 SSM3K15TE(F)
DCSW
SB2
BATT
IC708 XC6204B502PR
5A
AVR
DCDC
-10V
IC403 LM2682MMX
50U AVR
IC411
5UC
NJM2880U105ZB
ASQDET
+B Q406 2SB1132(Q,R)
Q407 UMG3N
APC
AVR
Q405
SSM6N16FE-F
DO
INAMT
EXAMT
INAMT
OPT10
IC409
TC75W66FK-F
IC703 IC703
M62364FP-F(5/8)
DAC DAC AMP
IC408
TC75S51FE(F)
EXAMT
IC715
VOX AMP
IC412
TC75S51FE(F)
TPA6201A1DRBR
D706
Rect
RB706F-40
OPT6
VOX
IC716
AO to VGS RXD3
AMP TC75W51FK(F)(2/2)
IC716 Q707 Q4 SSM3K15TE(F)
2SJ243-A Q5 2SJ347F
AMP MUTE MUTE
MM MSW
AGC
TCXO_MOD
IC703
M62364FP-F(2/8)
DAC
VCO_MOD
+B
CN403
+B Volume
SB1
33A
VOL
ENC1
ENC2
ENC3
ENC4
Selector
knob
CN23
6_KEYO2
6_KEYO1 KEY
6_KEYO0 Matrix
6_KEYI0 (6key)
6_KEYI1
6key
Back Light
BL_SB
IC413
TPA6201A1DRBR
CN405
EMC
MSW MSW
SSW
/UDET
PTT
/PTT
PFKEY PF
OPT
50U 5V
TXD
RXD
NC