Block Diagram - Kenwood NX-840H Service Manual

BLOCK DIAGRAM

DISPLAY UNIT X54-389 TX/RX UNIT XC1-001
POWER
5
KMO1
PLL_LE
S A <B
PLL_CLK
PLL_DATA
PLL_PDN2
KMO2
PLL_UL
CH
C>
UP
KMO3
C
VOL VOL
H
UP DN
KMI1 KMI2 KMI3
D37 IC1
HDSP-521A TCA62746AFNAG
LEDI
LED LED
LECE
4
NUMERIC OUT 0-15 DRIVE LECL
LELM
DISPLAY R
LEDM
5MS 5MS
SW
LEDM
MBL
Q5
MIC
SB
2SC3928A
ME
GND
PTT(TXD)
PTT/TXD
ME
HOOK/RXD
MIC
POWER
HOOK(RXD)
MKEY
DM
SB
MIC
5MS
SP+
Q6
SP-
2SC3928A
LEDM
MBL
LERE
SW
BLULED
LELH
SP+
LECL
3 SP- D22
LECE
B30-2321-05 LEDI
Q9
REDLED
SP 2SC3928A
5MS GRNLED
SW LED BLULED
KMO1
KMO2
KMO3
MLED
KMI1
Q1 KMI2
RT1N441U KMI3
SW
GRNLED
Q7
RT1P141U
D23
SW
E58-0536-05
B30-2151-05
LED
LED
SW
Q8
2
RT1P141U
Q2
SW
REDLED
RT1N441U
Q3 D1-15
KRA225S B30-2282-05
SW KEY BACK LIGHT
SB
SW
MBL
Q4
1
KRC102S-P
A B
Fin
AMP
Q2
2SC5636
5C
IC2
AK1541
LV/C
LOOP
Filter
PLL
IC
33C
5C 9CL
RIPPLE
9C
FILTER
Q10
16.8MHz
KTC4075E(Y,GR)
X1
16.8MHz IC3 Q3
L77-3128-05
BD7542FVM SSM3J05FU-F
MOD1
ASSIST
ASSIST
ASTC
FREQ
FILTER
Filter
TCXO
33MS
ATSTSW SW
Q4
2SK1824-A
IC709
CMX7141
IC706
NJM2100V-ZB 19.2MHz
MOD1
33BA/33BD
MOD2
BASEBAND
MIC/MOD
IC
AMP
AGC CML_SSOUT
AGC
DET CML_EPSCL
K
Q700 CML_CSN
CML_EPSI
D712 CML_SCLK
2SC4919
CML_RDATA
MC2858 CML_CDATA
M1MUTE CML_IRQN
CML_EPSO
D713
LSDI
LSDO
PTT 1SS372F
HSDI
HSDO
LEVEL TXD
APCC_TVC
BUCNT1 XIN
SHIFT
ASTC
MKE Y
3.3 5
FREQ
BUCNT2
IC724
TC7WT126FU-F
5M
LEVEL
HOOK/RXD
SHIFT
5 3.3 MKEYI
IC725
TC7WT126FU-F
33MD
IC700
IC702
D704,706,707,709,711
J700
PCA9555AHF TC7WBD125AFK
DA221
F1CNT
FNC5 SCL LEVEL I2CCK
FNC6 SDA SHIFT I2CDT
I/O 5V/3.3V
5M
Expander
F1CNT LEVEL
SHIFT
SURGE F2CNT
FNC1
5M 5V/3.3V
PROTEC F34CNT
FNC3
T
FNC1
LEVEL
FNC2
FNC3 SHIFT
GND 5V/3.3V
FNC4
FNC2
SB
IGN FNC4
RS232C
SP2 Q703 Q702
DRIVER
DETO 5MS
MTM981400BF LTC014TEBFS8
F2CNT
DATAI
IC704
5MS HORN
ALERT SW HORN ADM202EARNZ
HR1
SW
HR2
$R763
5V_TXD2
IC502 IC718
XC6221B332N-G MM1856A33N
$R793 33MD_CLOCK
AVR AVR
33MS 5M 33MD
3.3V 3.3V
RXD2
SBC
C
(No.RA011<Rev.001>) 2-9
Q5 Q11
MCH3914(7)-H 2SC5108(Y)F 2SC5108(Y)F
RX
BUFF
VCO
Q9
KRX102U
Q6
9CL
SSM3J15FS
DCS
SW
5MS
W
TX/RX
16.8MHz Tripler
TX
KTC4080E-P
VCO
Q7
MCH3914(7)-H
50.4MHz(2nd Local)
IC501
AK2365A
MOD2
IF
SQIN
DEMODULATOR
RSSI
FM_SCLK
FM_SDATA
FM_CSN
IC500 FM_RSTN
FM_PDN
BU7465HF
DC level
LSDO adjust
33MS
Buffer
LEDI EEP_DATAO
33MD
E
LECE EEP_SCLK
ROM
LECL EEP_CS
EEP_WP
LELH
LERE BUCNT1
ACR_SW BUCNT2
EVOL_DACCE SBC
33MA
EVOL_SCLK MKEYO
EVOL_DATA 9RC
BEEP ASTSW
FNC_1 FM_RSTN
LSDO FM_SCLK
HSDO FM_CSN
3CC FM_PDN
5CC TXD
MCU
PLL_DATA TXRX
PLL_CE HORN
IC714
PLL_CLK CMLEPSO
SMT32F405ZGT6
PLL_PDN2 LEDM
PA MBL
AMP_SW 33BC
9TC MIC1MUTE
KMO3 MIC2MUTE
KMO2 SP_MUTE
KMO1 SWO
IC703
TXD2 SRST
TC7WH126FU-F
CML_CSN BLULED
TXDO
CML_SCLK GRNLED
RTSO
CML CDATA REDLED
5M
PCBVER
KMI1 CML_SSPUT
F34CNT
IFDET
KMI2
CML_EPSCL
RXDO DISC_DC KMI3
K
RESET
CTSO RXD2 CML_EPSI
LSDI
CML_RDATA SIM1
33MD
HSDI
EEP_DATAI SIM2
IC705
IC701 TEMP1
MKEY1
IGNIN
TC7SET08FU-F
TC7WH126FU-F
TEMP2 PLL_UL
POWERKEY
LEVEL SQIN
PLL BATT_INT
TXD2
RSSI
5V_TXD2 SHIFT HOOK CML_IRQ
BATT
5V/3.3V 5M RXD
CVIN
IC710 IC726
XC6221B332N-G
XC6221B332N-G
AVR AVR
5M 33BD 5M 33C 5M
3.3V 3.3V
BATT_INT
33BC 33CC
D E
2-9 (No.RA011<Rev.001>)
Q12 Q300 IC300 TX
9T 9R
450-520MHz
RD00HVS1-T113 RA60H44521101
COUPPLER
COM TX/RX DRIVE POWER
POWER
AMP SW AMP MODULE
DET
D16,17
RN142S
VGG
9C
Power
RX 1st LOCAL
RECTIFIER
400.05-470.05MHz
Q500
APC
CONTROL
9T
Q503
Q501 XF500 Q506
3SK318
KTC4075E(Y,GR) L71-0684-05 3SK318
IF
MCF
MIX BPF LNA BPF
AMP 49.95MHz
33MS 9R 9R
RF BPF RF BPF
TUNE TUNE
D502,503
33MS
1SV305F
TVC
IC706
5C
NJM2100V-ZB
3C
EVOL
Audio
HSD
AMP/
SPMUTE
Buffer IC715
AK2331
2 IC716
P EVOL_SCLK
33C
M95512-RDW6TP
EVOL_DATA
EVOL_DACCE
EEP_SCLK
EEP_DATAO
EEP_CS
EEP_DATAI
EEP_WP
9C
I2CDT
I2CCK
Q717
/INT15P
TA4809BF
Q710
FM_SDATA
2SB1694
SWDIO
AVR
SW
9T
9V
Q708
LTC014EEBFS8
9TC SW
Q709
2SB1694
SW
9R
19.2MHz
Q707
5M
LTC014EEBFS8
9RC SW
IC723
5C
XC6120N302N-G
RESET RESET 33M
33MA
LTC014EEBFS8
Q706
IC720
LTC044TUBFS8 Q717
SSM3J05FU-F XC6221B332N-G
IGNIN SW IGN
AVR
33BA SW 5M 5MS
3.3V
Q713
LTC044TUBFS8
SW Q723
SW
FB LTC014EEBFS8
LTC014EEBFS8
OVER VOLTAGE DET 33BC
F
D305,306 : L407CDB
D309,D310 :
ANT
LPF
ANT
SW
D307,308
RB706F-40
APC
IC301
HA17358BFEL-E
BEF
IC503
HA17358BFEL-E
D504,505
1SV305F
9C
DC
AMP
TVC
APCC_TVC
Q714
5C SB
SSM3K05FU SP+
SW
IC719
LA4600
AF
AMP
SP2
EXT SP
SP-
SW
Q715
SW
SSM3K05FU
Q720
PA
LTC014EEBFS8
AMPSW
SB FB
Q719
2SJ645
SW
+B
GND
Q718
KTC4075E(Y,GR)
SBC SW
IC722
BD4740G
BATT_INT INT
IC721
TA7805F-NQ
AVR
SW
5V
Q716
SSM3J05FU-F
SW
Q711
5CC
SW
Q721
SSM3J05FU-F
SW
Q722
SBC
G