Kenwood NX-900 Service Manual page 114

TX-RX UNIT (X57-806)
DCin CN401
+B
(13.6V)
F401
F53-0328-05
CN402
DCDC
GND 50M
Converter
IC402
IC405
XC6204B332P-G
LT1616ES6-PBF
3.3V AVR
IC408
XC6204B332M-G
3.3V AVR 33A
Q416 2SA1955A-F
SSM6L05FU-F
Q412
DC SW
2SA1955A-F SBC_2 DC SW 33A_2
DC SW 50MC
D408
MC2848-T111
2SA1955A-F
33M
SBC_2 DC SW
IC409
XC6205B152P-G
1.5V AVR 15M
Q404
2SJ645
DC SW SB
RESET
SBC_2
XC6119C29ANR
8V AVR 80C
IC403 Q407
Detect /BINT 12A02CH
NJM78M08FA-ZB
IC401
DC SW 80T
XC6118C23CMR
TXC
Q408
Protect
SBC_2
12A02CH
D401
DC SW 80R
UDZW18(B)
Q401
SBC
RT1N141U-T111
RXC
5V AVR 50C
IC404
TA7805F-NQ
Q409
12A02CH
E41-1682-05
DC SW
CN403
/IGN
1
Q403
2
RT1N140U-T111
3.3V AVR
IC406
TK71733S
3.3V AVR
IC407
XC6204B332M-G
SCTAM1 33M
SCBSY
SCRXD 33M 15M
SCTXD
IC717
DSP
IC509
TC7WT125FUF
BER_CLK
BUFF
BER_DATA
/BER_EN
33M
IC501
FLASH MEMORY
33BU
IC503
SRAM
33C
IC1
LM73CIMKX-0
I2CCK TEMP
I2CDT SENSOR
Q11
X1
33C 33C
L77-3016-05 2SK3737-5
33M
VCTCXO
VC BUFF
19.2MHz
Q405
D21
RN142S
SCTAM1
SW
/BINT
Q411
PLD
33BU
CN405
/PCS_RF
/RST
PLL_MOD
Buckup Battery
P_SCK1
/RST
SDO1
IC506
50R
2SC5636
D201
DAN235E
50R
33C
RXC
SW
33C
W_/N
W_/N
33GPS
33M 15M
IC508 X502
SM5023CNDH-G L77-3015-05
VCTCXO
Main_CLK BUFF
18.432MHz
BSHIFT
SCBSY
Main_CLK
/SYMTIM,FRM_DET,/DWUP,/DINT
DSP_ST,/MCCSXCN,HST_DRY,MCDICN
/MCCSAF,MCDOAF,MCDIAF,MCSCKAF
/PCS
to PLL
IC511
TC7SH08FU-F
CE
IC718
TC7SH08FU-F
CLK
SCK1
MCSCKCN
A[0-20],D[0-15],/RD,/WR
/CS0,/CS2,/CS3,/HRDY,/WP
/FRST,/DRST,/HINT,/HDS2
/RINT
32K
I2CCK.I2CDT
33BU
IC504
RTC
RV5C386A
X501
32.768kHz
/RST
L77-1802-05
80C 50C
Q1 Q4
2SC5383-T111 2SC5383-T111
Ripple Ripple
FILTER FILTER
/T_R
T/R SW
Q7
ASSIST
BUFF SSM6L05FU-F
50C
Q8
IC4 SSM3J05FU-F
XC221A1200MRG
50C
IC3 VCO
LOOP
PLL Q5,Q6 BUFF AMP
FILTER
SKY72310-362 MCH3914(8)-H
Q9 Q10
2SC5636 2SC5636
IC5(1/2)
TC75W51FK(F)
CV
IC5(2/2)
TC75W51FK(F)
VCO_MOD
Fin
2nd Local
BPF
50C
Q203
50R
IF
AMP
CF201 (Wide) Q204
L72-1027-05 2SC3356(R23)
D202
DAN235E IC203(1/2)
TC75W51FK(F)
IF IC
CF CF
VAGC
IC202
SW SW
TK10931VTL-G
IC203(2/2)
TC75W51FK(F)
RSSI
CF202 (Narrow)
FM_DET
L72-1041-05
Q201 RT1P141U-T111 CF203
Q202 RT1N441U-T111
SW CD
Q212 CD201
L72-1040-05
EMD9 L79-1850-05
Main_CLK /RST
RFAGC,ASSIST,DSW
/T_R,W_/N,W_/V,/H_L
SCK1,SDO1
CV,THP,RSSI,ASQDET
VAGC,PLD,MPL,BLVL 33A_2
450k
BUFF
IC704
MCP6021-E/0T
MOD_REF
IC703(1/2) IC703(2/2) IC719(8/8)
TC75W51FK(F) TC75W51FK(F) R2A20178NP
ASQAPC
LPF LPF DAC
APC
/EVCS,SCK0,SDO0
AI IC710
TC7W53FK(F) OPT10SEL
TONE
OPT9 VREF
STSW
IC711(2/2)
IC701 IC707 TC75W51FK(F)
TC75S51FE(F) TC7W53FK(F)
RXAF
LPF
SUM
/SCSW
IC510
AMT
RXEO RXEI
ASIC
BEEP
DTI
IC706(1/2) IC706(2/2)
TC75W51FK(F) TC75W51FK(F) IC708
MIC
TC7W53FK(F)
LPF
SUM
TXI
/SCSW
IC702(2/2) IC702(1/2)
TC75W51FK(F) TC75W51FK(F)
MOD
LPF LPF
IC709(1/2)
TC75W51FK(F)
IC720
TC75S51FE(F)
DI AMP
LPF DI
TONESW,AMT,STSW,BEEP,TONE,/PRST
MM,MM2,INAMT,/SCSW,RTS0,PBSHIFT
TXD[0-3],IFC,TXC,RXC,SBC
OPT10SEL,/EVCS,SCK0,SDO0
/OVRB,/IGN,/PSW,/BINT
CTS0,RXD[0-3]
/INT25P
OPT[1-8]
OPT11
CN595
26pin Option Board
E40-6361-05
50C 80T 80T +B
D101,205 PRE-
HVC131 DRIVE DRIVE FINAL
T/R RFRF POWER
DIV BPF AMP
AMP
SW AMP MODULE
Q150 Q151
Q420 IC102
2SK3077F RD01MUS1-T113
RA45H76871101
2SC5108(Y)F
80T 50R
80T
IC719(7/8)
R2A20178NP APC
APC
MP
DAC
IC103
50R
NJM12904RB1
/EVCS,SCK0,SDO0
BPF
LPF
BUFF
Q208
2SC5636
50R
50R XF202 IC716 L907
MCF CMY210 L79-1928-05
IF 1st
AMP MIXER
L71-0649-05
Q205
2SC3356(R23)
50R
IF_DET
BUFF
TC75W51FK(F)
IC705(1/2) Q702 D703
TC75W51FK(F) 2SC5383-T111 RB706F-40
IC201
MCP6021-E/0T SW BPF AMP DET
Q701
SSM3K15TE(F)
AMP
33A_2
IC711(1/2)
TC75W51FK(F)
VREF
BUFF
DEO
SW OPT10
Q708
LEVEL SHIFT
2SA1832(GR)F
TC7WBD125AFK
Q709
RT1N141U-T111
IC719(5/8) Q710
R2A20178NP DTC363EU
I2CCK
IC514
DAC MUTE I2CDT
IC713
TC7W53FK(F)
INAMT
/EVCS,SCK0,SDO0
AO
OPT6
D704,705 RB706F-40
Q704 2SC4738(GR)F
Q705 2SA1832(GR)F
MM2
LIMIT
Q707
2SJ243-A
TXO IC709(2/2)
TC75W51FK(F) MUTE MI2
IC516
SUM MUTE MI1
TC7WH126FU-F
AI LEVEL SHIFT
Q706
TONE 50MC
2SJ243-A
MM
RXD0
IC719(1/8)
R2A20178NP CTS0
DAC TCXO_MOD(no use)
IC719(2/8)
50MC
R2A20178NP
/EVCS,SCK0,SDO0
DAC VCO_MOD
TXD0
/EVCS,SCK0,SDO0
RTS0
50MC
IC515
LEVEL SHIFT
TC7WT126FU-F
IC512
TC7SET08FU-F
TXD1
SCTXD
CN597
Display UNIT
E40-6558-05
D103
MA4PH633
806-825MHz(TX)
D925,926
RKP351KW-1P2 851-870MHz(TX/RX)
D920,921
RN142S
CM ANT ANT
COUPLER SW LPF
FWD REV
DET DET TEMP
80T
D109 D108 DET
HSB88AS-E HSB88AS-E
TH102
ERTJ0EV104H
80R
L906
L79-1928-05
LNA
Q2
RF LEVEL
3SK293-F
LIMITER
D923,924
RN142S
IC705(2/2)
BUFF ASQDET
SB
SB
SPI
IC715
CN705
LA4425A
HOR
6pin Option Connector
PA
E40-6528-05
Ext SP JACK
SPO
J701
E11-0425-05
VOLTEGE D905
MI2
PROTECT UDZW18(B)
ME
DI
BER_CLK
VOLTEGE D906
50C DEO
BER_DATA PROTECT UDZW18(B)
AFO
D901-904
SURGE
D907-908
PROTECT
D911-912
IC517 AUXIO[1-9]
VOLTEGE
I2CCK IMVERTER
I/O Expander
I2CDT PROTECT
AUXO1
PCA9535BS
Q901,Q902 D910,914
AUXO2
QSX6 UDZW18(B)
CN600-CN901 D909,913
SB
D-SUB UNIT 1SS355
IC513
50C
/INT25P TC7SET08FU-F
TXD2
TXD2 BUFF
25P_TXD2
D506,507
1SS416 RXD2
RXD2
G_RXD2
50MC
TXD0
RXD0
RTS0
IC518
CTS0
RS-232C Driver
ADM202EARNZ