Kenwood NX-411 Service Manual page 98

TX-RX unit (X57-8120-10) (A/2)
/SCRST,SCSCK,/
SCREQ,SCBSY,SCMOSI,SCBCK,
/SCSS,SCMISO,/SCWKUP,/SCBFS
IC303
IC305
33M
Flash
15M
SRAM DSP IC304
Memory
HD2
/DRST,DCLK,/HDS2,/HRDY,/
SYMTIM,/RSSITIM,/DINT,
/SWUP,FSDET,/HINT
IC301TC74LCX245FK
IC302 TC7WZ245FK-F
MCD1AF,/MCSCKAF,/MCCSAF,MCD0AF,
MCD1CN,/MCCXCN,/MCD0CN,/
MCCSRCN,MCSCKCN
BUS SW
D0~15,A0~20,/RD,/WR,/CS0,/CS2,/CS3,/CS4
IC3
33A
33M
R2A20178NP
5A
DAC
SDO0,SCK0
LCDCNT
/EVCS,EVRST
(7/8)
INTMIC
ME
KEYO0,KEYO1,KEYO2,KEYO3
KEYI0,KEYI1,KEYI2,KEYI3,KEYI4
/PTT,/LCDRST
SB2
Q303 2SA1832(G,R)F
Q305 2SC5383-T111
AVR Q212
SB2
EMD12
LED_G
DC SW
5A
Q3012SA1362(GR)-F
SBC
DC SW
Q302 2SC5383-T111
Q213
EMD12
AVR
DC SW
LED_R
5A
BLC TXD0
SBC
RXD0
Q304
RTS0
SSM3K15TE(F)
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
IC308
RTC
RV5C386A
I/O Expander
/OINT
IC311
PCA9535BS
X301 32.768kHz
CN321 26pin Option Board
CN923
26pin Option Board
(B/2)
Q503 2SC5383-T111
I2CCK
I2CSDA
Ripple
50C
Filter
IC502
Q505 SSM6L05FU-F
LM73CIMKX-0
X302
IC310
Q506 2SJ347F
SM5023CNDH-G 18.432MHz 33C IC503
Temp.
Sensor SKY72310-362
TCXO 33M
Loop
33A 15M
33M VC
Filter
TCXO
X501 19.2MHz Q502
2SK879-F(Y)
PLL
CV
PLD
IC505
SDO1 TC75W51FK (F) (1/2)
SCK1
VCO MOD
HD2
50C
Q501
/PCS_RF 2SC5383-T111
Ripple
/PCS Filter
IC312
ASSIST
TC7SH08FU-F
IC504
XC221A1200MRG
Q801 2SC5636
x3
IC801
MCP6021-E/OT
IF_DET
IF
AMP
IC306
XC6109C29ANN
RESET 33M
IC16 Q12 D7 IC16
TC75W51FK(F)(2/2) 2SC5381-T111 KDR731 TC75W51FK(F)(1/2)
BPF AMP Rect AMP
IC11
TC75W51FK(F)(2/2)
LPF
IC309 IC11
TC75W51FK(F)(1/2)
ASIC IC3
ASQAPC
R2A20178NP(8/8)
LPF
DAC
/SCSW
AMT
IC2 IC10
TC75S51FE(F) TC75W51FK(F)(2/2)
RXAF
LPF SUM
IC7
TC7W53FK(F)
STSW
RXEO to RXEI from
Scrambler Scrambler
Q1
OPT9
SSM3K15TE(F)
MUTE
AI from VGS
TONE
SW
IC6
TC7W53FK(F)
TONESW
IC4 IC5 IC8
TC75S51FE(F) TC75W51FK(F)(1/2) TC7S66FUF
MIC
LPF SUM MUTE
/SCSW
DTI from ANI TXO to Scrambler
TXI from Scrambler
IC1 IC1 IC5
TC75W51FK(F)(2/2) TC75W51FK(F)(1/2) TC75W51FK(F)(2/2)
MOD
LPF LPF AMP
CN6
VCO
SW
Q509
Q510 D513,D601
2SC5636 2SC5636 RN142S*2
BUFF BUFF T/R
VCO ×2
AMP AMP SW
Q508
2SC5636
Q504,507 MCH3914(8)-H
D508,D509 HVC350B
D511,512 1SV278-F
D505,D510 HVC350B
D506,D507 1SV323F
BPF LPF
CF801 450kHz
BPF
CF802 Q802 XF801 IC804
450kHz 2SC5108(Y)F 58.05MHz CMY210
IF AMP
IF 1st
BPF IC802 MCF
AMP MIXER
TK10931VTL-G
ASQDET
+B Q11 82SB1132(Q,R)
Q10 UMG3N
APC
AVR
Q7
SSM6N16FE-F
INAMT
DAC_23
EXAMT
IC17
INAMT TPA6201A1DRBR
IC15
TC7W66FK-F
IC3 IC3 IC13
R2A20178NP (6/8) R2A20178NP (5/8) TC75S51FE(F)
DAC DAC AMP
IC19
TPA6201A1DRBR
IC12 EXAMT
VOX AMP
TC75S51FE(F)
D3
Rect
KDR731
IC9
TC7W53FK(F)
OPT6
VOX IC14
AO to VGS RXD3
AMP TC75W51FK(F)(2/2)
IC14 Q6 Q8 SSM3K15TE(F)
TC75W51FK(F)(1/2) 2SJ243-A Q9 2SJ347F
AMP MUTE
MUTE
MM CTSO
AGC
D1,2 KDR731
Q3 2SC4738(GR)F
Q4 2SA1832(GR)F
IC3 IC3
R2A20178NP (1/8) R2A20178NP(2/8)
DAC DAC
VCOMOD
/EMG
D605,606,607,608
Q610 Q601 Q602 Q604 HVC131*4
2SC5636 2SK3077F RD01MUS1-T113 RD07MUS2BT112
Q607 2SC5383-T111
Pre-
Drive Final ANT
AMP Drive
AMP AMP SW
AMP
Q609
DC SW
EMD5
IC601
APC
NJM12904RB1
Q606 Q608
RT1N441U-T111
2SK1824-A IC505
DC SW Protect
Q605
SSM3K15TE(F)
TC75W51FK（F) (2/2)
/APCSW
Q804
L820 BB505CES-TL-E L830
BPF LNA BPF
Q522
3SK294-FP
50R
DI
AVR
33M
IC203
XC6204B332D SBC
IC202
Q203 SSM6N16FE-F
XC9235A15CM1
DC-DC /PSW
15M
SB1
Q204 SSM6N16FE-F
IC201
XC6204B332D /BINT
CN5
AVR
33A
SCTAM1 DC SW
SP
IC207
TK71733S
Q211 2SA1955A-F
Q209 SSM3K15TE(F)
AVR
33C
31BU DC SW
Q208 2SA1955A-F
SBC
Q210 SSM3K15TE(F)
CN4
EMC
CTS0 MSW SB2
/UDET SSW
/PTT PTT
PFKEY PF
BATT
OPT
50U 5V
5A
TXD
RXD
NC
INTMIC
50U
50C
Q205 SSM6L05FU-F
50R
CN201
Q207 2SA1955A-F
+B
50T
SB1
33A
VOL
Volume
ENC1
Selector
ENC2
ENC3
knob
ENC4
TX: 896～902MHz
RX,TX(TA):
935～941MHz
LPF
+B
APC
L212 , D206 , D207 BATT
IC206 LT1616ES6-PBF
7.5V
DCDC
+
Converter
-
D212
1SS301F
DC SW S
S_DET
IC209
Q206
EMD12 XC61CC5602NR
RESET
IC210
S-812C31BPI-G
AVR
D213
1SS301F
SBC
Q201 2SJ648-A
Q202 SSM3K15TE
DCSW
IC204 XC6209B502PR
AVR
IC18 NJM2880U105ZB
AVR
5UC
IC205
TK11250CUCB
AVR
/SAVE
DC SW
5RC
DC SW
/5TC
IC208 TC75S51FE(F)