Block Diagram - Kenwood NX-411 Service Manual

NX-411

BLOCK DIAGRAM

TX-RX unit (X57-8120-10) (A/2)
IC303 IC305
Flash
SRAM
Memory
IC301TC74LCX245FK
IC302 TC7WZ245FK-F
BUS SW
33M
5A
LCDCNT
INTMIC
ME
KEYO0,KEYO1,KEYO2,KEYO3
KEYI0,KEYI1,KEYI2,KEYI3,KEYI4
/PTT,/LCDRST
Q303 2SA1832(G,R)F
Q305 2SC5383-T111
AVR
SB2
5A
Q3012SA1362(GR)-F
Q302 2SC5383-T111
AVR
5A
Q304
SSM3K15TE(F)
IC308
RV5C386A
CN321 26pin Option Board
CN923
26pin Option Board
(B/2)
86
/SCRST,SCSCK,/
SCREQ,SCBSY,SCMOSI,SCBCK,
/SCSS,SCMISO,/SCWKUP,/SCBFS
33M
15M
DSP IC304
HD2
/DRST,DCLK,/HDS2,/HRDY,/
SYMTIM,/RSSITIM,/DINT,
/SWUP,FSDET,/HINT
MCD1AF,/MCSCKAF,/MCCSAF,MCD0AF,
MCD1CN,/MCCXCN,/MCD0CN,/
MCCSRCN,MCSCKCN
D0~15,A0~20,/RD,/WR,/CS0,/CS2,/CS3,/CS4
IC3
33A
R2A20178NP
DAC
SDO0,SCK0
/EVCS,EVRST
(7/8)
SB2
Q212
EMD12
LED_G
DC SW
SBC
DC SW
Q213
EMD12
DC SW
LED_R
BLC TXD0
SBC
RXD0
RTS0
CTS0
DSR
/PTT
/UDET
RXD3
ENC1
ENC2
ASQDET
ENC3
VOX
ENC4
VOL
/BINT
BATT
/PSW
PFKEY
BLC
MM
SCSW
/AMT
STSW
EXAMT
INAMT
TO DSP
BEEP
TONESW
/MNDNU
5UC
/RINT
32K
I2CCK,I2CSDA
RTC
I/O Expander
/OINT
IC311
PCA9535BS
X301 32.768kHz
I2CCK
I2CSDA
IC502
LM73CIMKX-0
X302
IC310
18.432MHz 33C
SM5023CNDH-G
Temp.
Sensor
TCXO 33M
33A 15M 33M
VC
TCXO
X501 19.2MHz
PLD
SDO1
SCK1
HD2
/PCS_RF
/PCS
IC312
TC7SH08FU-F
IF_DET
IC306
XC6109C29ANN
RESET 33M
IC16
TC75W51FK(F)(2/2)
BPF
TC75W51FK(F)(2/2)
IC309 IC11
TC75W51FK(F)(1/2)
ASIC
ASQAPC
LPF
/SCSW
IC2
TC75S51FE(F)
RXAF
LPF
RXEO to RXEI from
Scrambler Scrambler
Q1
SSM3K15TE(F)
TONE
SW
TONESW
IC4
TC75S51FE(F) TC75W51FK(F)(1/2)
MIC
LPF
DTI from ANI
IC1
TC75W51FK(F)(2/2) TC75W51FK(F)(1/2)
MOD
LPF
CN6
Q503 2SC5383-T111
Ripple
50C
Filter
Q505 SSM6L05FU-F
Q506 2SJ347F
IC503
SKY72310-362
Loop
Filter
Q502
2SK879-F(Y)
PLL
CV
IC505
TC75W51FK (F) (1/2)
VCO MOD
50C
Q501
2SC5383-T111
Ripple
Filter
ASSIST
IC504
XC221A1200MRG
Q801 2SC5636
x3
IC801 CF802
MCP6021-E/OT 450kHz
IF
BPF
AMP
Q12 D7 IC16
2SC5381-T111 KDR731 TC75W51FK(F)(1/2)
AMP Rect AMP
IC11
LPF
IC3
R2A20178NP(8/8)
DAC
AMT
IC10 IC3
TC75W51FK(F)(2/2) R2A20178NP (6/8)
SUM DAC
IC7
TC7W53FK(F)
STSW
OPT9
AI from VGS MUTE
IC9
TC7W53FK(F)
IC6
TC7W53FK(F)
IC5 IC8 IC14
TC7S66FUF TC75W51FK(F)(1/2)
SUM MUTE AMP
/SCSW
AGC
TXO to Scrambler
D1,2 KDR731
Q3 2SC4738(GR)F
TXI from Scrambler
Q4 2SA1832(GR)F
IC1 IC5 IC3
TC75W51FK(F)(2/2) R2A20178NP (1/8)
LPF AMP DAC
VCO
SW
BUFF
VCO
AMP
Q508
2SC5636
Q504,507 MCH3914(8
D508,D509 HVC350B
D511,512 1SV278-F
D505,D510 HVC350B
D506,D507 1SV323F
CF801 450kHz
BPF
IF AMP
IC802
TK10931VTL-G
ASQDET
APC
INA
DAC_23
EXA
IC3
R2A20178NP (5/8)
DAC
VOX AMP
Rect
OPT6
VOX
AO to VGS
AMP
Q6
2SJ243-A
MUTE
MM
IC3
R2A20178NP(2/8
DAC