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Kenwood TH-D74E Service Manual page 53

144/430mhz dual bander
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BLOCK DIAGRAM
DDR_A[0]~DDR_A[13]
DDR_BA[0],DDR_BA[1]
512Mbit
DDR_CAS,DDR_CKE,DDR_CLKN
mDDR
DDR_CLKP,DDR_CS
18M
IC701
DDR_DQM[0],DDR_DQM[1]
DDR_RAS,DDR_WE
DDR_DQS[0],DDR_DQS[1]
10
DDR_D[0]~DDR_D[15]
33M
256Mbit
/CS_F
NOR FLASH
IC705
/FRST
/OE,/WP,/WR
18AD
ADD[0]~ADD[23]
DATA[0]~DATA[15]
CN702
E40-6962-05
40C
LCD
18M
9
30M
FILTER
DC,/CS,/RD,/WR
/CS4,/OE,/WR,ADD[23]
FL700-FL704
DATA[0]~DATA[15]
BD00~BD15
1.74inch
L79-1984-05
240x180dots
Color LCD
40C
AND SW
LEDA
IC709
IC710
18M
LEDK1~LEDK3
BD1754HFN
TC7SZ08FE
/RESET
/RESET
Q703
LCD_RST
SSM3K15AMFV
FROM OMAP
LCD_BLC
KEY
33M
8
CN1
CN705
E41-3377-15
E41-3377-15
/KEY_IO_INT
21KEYS
I/O Expander
KEYI1~KEYI4
KEYI1~KEYI4
S700-S720
IC730
KEYO0~KEYO3
KEYO0~KEYO3
S70-0519-05
I2CCK,I2CDT
KEY BACK LIGHT
D801-D812
SML-D12D8WQR
40C
LAMPB
LAMP B
6.8V
Q708
EM6M2
LAMPGND
LAMPS
7
SP+
SPEAKER
SP-
CN707
VOLUME
EC720AA-0506A
ENCODER
ENC2
ENC2
ENC1
ENC1
33M(Vol_I)
VOL_V(Vol_O)
KEY_O4
MONI
6
S722
S70-0514-05
KEY_I0
31BU
Po SWI
POWER SW
S723
S70-0514-05
RST
AND SW
PWR
IC728
TC7SZ08FE
33M
Po SWO
SIDE KEY
TO TX-RX
PTT
33M
PTT
S721
S70-0514-05
TH700
CHG_TH
5
GND2
GND1
COMMON
/SD_DET
CD
SD1_CLK
DAT1
microSD
DAT0
SD1_CMD
VSS
SD1_DAT[0]~SD1_DAT[3]
J701
CLK
VDD
CMD
CD/DAT3
DAT2
33SD
GND
33M
microUSB
NC
(B type)
DP
VBUS SW
J700
DM
Q712
E58-0566-05
VBUS
EMD12
40C
D721
B30-2278-05
4
PY
RLED
GREEN
SW
Q711
EM6K34
BR
TLED
RED
LAMPS
PTT
MIC_DET
MC880
T9B-0043-00
+
3
MIC
-
33M
PTT
MIC
INT_MIC
33M
EXT
MIC
MIC_DET
33M
SPG
REM
REM
TO A/D CONV
NC
EXT
SP
Q881 , Q883
INT_SP
SSM3K324RF
2
SP
MUTE
J880
E11-0703-05
SPMI
1
A
B
C
GPS MODULE
33M
18M
12M
Bluetooth
GPS
2400-2483.5MHz
1575.42MHz
OMAP
RF
IC702
AMP
CN931
E0E-0012-00
30GPS
SAW
SAW
FL932
FL931
L79-1987-05
33BT
18BT
18BT_HCI_TX,18BT_HCI_RX
RXD1,RXD2,TXD2
18BT_HCI_CTS,18BT_HCI_RTS
RTS2,CTS2
LEVEL CONVERTER
18BT_AUD_OUT,18BT_AUD_IN
BT_AUD_DI,BT_AUD_DO
IC930 IC936 IC937
,
,
33BT
74AVC4TD245GU
Bluetooth
WCLK,BCLK
18BT_AUD_FSYNC,18BT_AUD_CLK
GPS
18GPS_RX,18GPS_TX
3.3V
1.8V
IC935
18BT
/GPS_SHUTDOWN,/BT_SHUTDOWN
32.768kHz
33M
PULL UP SW
19.2MHz
TCXO
CLK
IC733
X930
X931
CE
XC8102AA07-G
L77-3123-05
L77-3121-05
18BT
40CS
TCXO_CLK_REQ
SW
Q930 EM6M2
32.768kHz
RTC
33BT
X'tal
X700
L77-1802-05
33M
/BINT
SW
/BINT DET
Q701
IC704
+B1
EM6K34
XC61CC5002N-G
19.2MHz
MCLK
TCXO
33M
CONTROL
X701
L7H-0067-00
12.288MHz
AMCLK
TCXO
33AD
X702
L7H-0054-00
CN706
CN661
TO CODEC
E40-6421-15
E40-6422-15
SCPU_TXD,SCPU_RXD,/S_RST
/RST
31BU
AND SW
VINOK
VINOK
IC719
TC7SZ08FE
33M
31BU
33M
47C
Q707
VDCIN
LTC043ZEBFS8
VBAT
VDCIN
REM
VBAT
21REF
VOL_V
VRef
BAT_DET
PMO
VOX
IC721
CURR
BU7242FVM
PMO
VERDET
IC726
/ADC
TCMBL3125CFT
SQA
31BU
31BU
18M
18M
SQB
SDI0
SMA
RSTLEVEL
IC732
31/RST
/RST
SMB
TC7S66FUF
CONVERTER
IC703
IC715
DET1
S-80135ANPFG
SCK0,SDO0
74AVC1T45GW
BAT_DET
DET2
CURR
16ch 8bit
A/D Converter
DAC
IC725 ADS7961SRHB
VIN1
VOL
AGCA/APC
VOL
AGCB
VOL
BPFR
MODAMP
VOL
BPFB
VOL
Freq
VOL
MOD
VOL
VCO MOD
IC720
NJM2904CRB1
VIN8
VOL
BPFA
LEVEL CONVERTER
IC675
,
IC676
,
IC677
SCK0,SDO0,/EVCS
/EVCS
TC7SET125FUJC
8bit D/A
3.3V
4.7V
Converter
8ch 8bit
SCK1,SDO1,SDI1
AUD_DI,AUD_DO
D/A Converter
WCLK,BCLK,/CODEC_CS
IC671 R2A20178NP
MICB
AMP
VOX
D882
TO A/D CONV
33AD
18AD
RB531SM-30
IC881
NJM2904CRB1
CODEC IC707
MICB
Analogue
MIC
Mic
DAC L
ADC L
AMP
LOUT
Mux/PGA
IC881
-1
ADC/
NJM2904CRB1
Record
OUTPUT
Digital
DSP
Digital
MIXERS
Filters
Core
Filters
-1
ROUT
Analogue
MOD
ADC R
Mic
DAC R
Mux/PGA
AF PA
AFB
AMCLK
IC880
TA7368FG
12.288MHz
X702_L77-1802-05
IC711 TC7WU04FKFT
POWER
MIC/PKD
AMP
33M
33RAD
B-Band 76-108MHz
OMAP
BCLK,WCLK
AND
BCLK,WCLK
IC673
TC7WH08FKJC
33RAD
BFMS
FM TUNER
D673,D674
IC
FMI
RF
BPF
BBY65-02V
OMAP
TU_AUD_DI
AMP
IC674
Si4704
Q675
2SC5661/NP/
I2CDTR,I2CCKR
BPFR
SUB
/RST_R,BFMS,RAINT
CPU
RCLK
32.768kHz
33RAD
OSC
X671_L77-1802-05
IC672 TC7WU04FKFT
D
E
F
G
SW
DAC
Q886
EM6M2
DACS
CN706
CN661
SW
E40-6421-15
E40-6422-15
MODAMP
Q704
EM6M2
MODS
47C
SW
MICB
Q884
EM6M2
SAW
+B1
MICBS
1.6A
F579
+B
FZA10AC-1R6
6.8V_AVR
6.8V
IC731
BD00GA5WEFJ
1.6A
F578
LAMPS
FZA10AC-1R6
6.8V_AVR
AFB
40C
IC882
BD00GA5WEFJ
AFBS
33S
33AD
3.3V_AVR
IC714
BU33TD2WNVX
1.8V_AVR
33ADS
18AD
IC708 BU18TD2WNVX
33RAD
33CA
3.3V_AVR
33M
IC712
XC6223D331G-G
33CB
1.8V_DCDC
18M
IC718
LXDC2HN18F163
Ripple Filter
Load SW
33BF
Q375
18F
IC724
XC8102AA07GR-G
1.2V_DCDC
12M
IC722
33TX
Q388
VTX1
3.1V_AVR
31BU
IC717
33C
XC6701B312E-G
1.2V_AVR
12BU
IC723
XC6215B122N-G
33BU
LITHIUM
CN703
J19-5386-05
CELL
3.0V_AVR
30M
IC713
BU30TD2WNVX
33BV
3.3V_AVR
33SD
IC700
BU33UA3WNVX
33RA
33SDS
3.0V_AVR
30GPS
IC933
BU30TD2WNVX
33RB
GPSANTS
3.3V_AVR
33BT
IC932
BU33TD2WNVX
1.8V_AVR
18BT
33IF
IC931
BU18TD2WNVX
33S
5.3V_AVR
5C
33S
IC363
33RAS
AND SW
SDATA
IC281
IC662
SCLK_A, SDATA_A
IC364
TC7WH08FKJC
33S
AND SW
IC663
SCLK_B, SDATA_B
IC284
SCLK
TC7WH08FKJC
33CBS
SUB CPU
CN401
CN401
IC661
EB770BE-0416A
33BF
EB770BE-0416A
CN400
STM32F051R8H6
EB760BE-0416A
33BF
33CB
235-325MHz
LOOP
LPF
FILTER
VCO1
AMP
AMP
Q369
MCH3914-H/8/
Q365
LF_SW
Q389
D370,D373
2SC5108FT/Y/
2SC5108FT/Y/
1SV325FT
VCO1
235-470MHz
SHIFT_B
VCO_MOD
CN400
33BV
EB760BE-0416A
325-470MHz
Divider
1/2
VCO2
IC361
1/4,1/8
MC12093MNR4G
Q368
MCH3914-H/8/
D369,D372
Pre1
Pre2
1SV325FT
VCO2
33CB
Shift_B
VCO-B
LPF
AMP
Q364
2SC5108FT/Y/
BFin
40C
RESET
158.85-
231.15MHz
33CAF
33CAF
LDA
5C
33RA
CN500
EB760BE-0416A
IC661
VCO
AMP
/PLL_A
LOOP
PLL
FILTER
Q386
MCH3914-H/8/
D381,D382
Q383
IC364 AK1541
2SC4726(P,Q)
1SV325FT
SHIFT_A
IC662
SCLK_A, SDATA_A
33CA
PLL_REF
CN501
EB770BE-0416A
LPF
19.2MHz
33C
AMP
TCXO_VCON
LPF
TCXO
Q384
2S4726(P,Q)
X362
L77-3109-05
Ripple
33CAF
Filter
Q385
IF_LO_REF
DSC9A01/T/
IC662
SCLK_A,SDATA_A
CN706
CN661
E40-6421-15
E40-6422-15
47C
OP AMP
IC661
RSTNA,/IF_CS_A
OAGCA/APC
A-BAND RSSI
SMA
OBPFA
Noise
A-BAND SQL
SQA
AMP
IC287
BU7242FVM
47C
DIS
OP AMP
CRI
OAGCB
OBPFB
IC288
BU7242FVM
33IF
460.8kHz
MEMS
A-BAND
X251
D-STAR/FM AUDIO out
L7H-0066-00
IN1L
B-BAND
33IF
3rdIF 10.8kHz
33IF
IN2L
3rd
B-BAND
IC286
SSB/CW/AM/IF out
Mixer
IF
BU7295HFV
BUFF
IN1R
IC285
B-BAND
TC7S66FUF
D-STAR/FM AUDIO out
IN2R
SQB
B-BAND SQL
SMB
B-BAND RSSI
IC661
RSTNB,/IF_CS_B
IC663
SCLK_B,SDATA_B
33RAD
B_RF
RF
SW
P171
G0B-0067-00
/EANTS
H
I
J
VDCIN
Q 5 8 5
LT C 0 4 3 Z E B F S 8
AND GATE
V.DETECTOR
IC587
IC591
40C
4.0V_DC/DC
TC7WH08FKJC
BU7925HFV
IC584
EN
3.3V_AVR
IC582
BU33TD2WNVX
OR GATE
Q 5 8 4
4.7V_AVR
IC592
47C
LT C043ZEBFS8
33SS
IC589 BD00GA5WEFJ
TC74VHC32FK
40C
3.3V_AVR
SW
47RA
IC581
BU33TD2WNVX
Q582
EM6M2
POSWO
40CS
33CAS
33RAS
2Q
1Q
3.1V
3.3V_AVR
SW
P.GENERATOR
3.1V_AVR
47PDT
IC578
Q9
RE1C002ZP
IC588
IC586
BU33TD2WNVX
TC74VHC123AFK
XC6701B312E-G
33CBS
Q 1 0
2B
VTX1
1B
S S M 3 K 1 5 A M F V
SW
D 2 9 , D 3 0
VINOK
DSC9A01/T
CKY
R B 5 3 1 S M - 3 0
SW
SW
144T
EM6M2
Q577
2SA1774/R/
144TS_
3.3V_AVR
144TS
SW
Q 1 3
IC580
BU33TD2WNVX
S S M 3 K 1 5 A M F V
33CS
3.3V_AVR
IC576
BU33TD2WNVX
33BUS
430T
SW
EM6M2
430TS_
Q576
3.3V_AVR
IC577
BU33TD2WNVX
430TS
33BVS
SW
ATT
Q14
EMD3
3.3V_AVR
IC579
BU33TD2WNVX
144TS
SW
D 4 0 , D 4 1
33RAS
430TS
1 S S 4 0 0 C M
3.3V_AVR
IC583
BU33TD2WNVX
+B
33RBS
VBAT
3.3V_AVR
IC593
BU33TD2WNVX
BFMS
3.3V_AVR
BU33TD2WNVX
IC590
33IFS
8V
Charge Pump
XC6201P532D
IC365
XC9801B503KR
144T,144TS
144T
430T
144T
430T
430T,430TS
33BU
33BV
47PDT
33TX
+B
VHF
Matching
Q 6
Pre
R D 0 1 M U S 1 - T 11 3
RF
Local
RF
RF
DRIVE
RF
DRIVE
Buff
SW
SW
AMP
SW
AMP
D 2 0
SW
LPF
1 S S 3 9 0
D364,D365
I C 1
Q 3 6 1
APC
D 3 9
1 S S 3 9 0
2 S C 5 1 0 8 F T / Y /
A G 3 0 3 - 6 3 G
R N 2 6 2 C S
UHF
D 2 2 , D 2 6 , D 3 1
Matching
33BV
D 3 5 - D 3 6
D 3 2 - D 3 3
R N 1 4 2 S M
Q 4 , Q 11
1 S S 3 9 0
1 S S 3 9 0
S S M 3 K 1 5 A M F V
LPF
33RB
AMP
Q363
LPF
2SC5108FT/Y/
SW
58.15-235MHz
D 3 6 1
1 S S 3 9 0
D 2 7 , D 2 8
1 S S 4 0 0 C M
144TS_
SW
430TS_
APC
OAGCA/APC
SW
158.85-
Q 8
33CA
231.15MHz
LT C043ZEBFS8
Q 7
2 S C 4 6 1 7 / R /
SW
AUS
APCSW
45TXS
Q377_RE1C001ZP
33CA
C N 5 0 1
E B 7 7 0 B E - 0 4 1 6 A
D 3 7 8
+B1
RF
1 S S 3 9 0
LPF
AMP
AMP
SW
(+B1)
+RB
Q381
Q 3 7 6
2SC4726(P,Q)
2 S C 4 7 2 6 ( P, Q )
33CA
C N 5 0 0
E B 7 6 0 B E - 0 4 1 6 A
APC
Buff
OPAMP
SW
Q379_RE1C001ZP
Q 1 2
2 S C 4 6 1 7 / R /
I C 3
L M C 7 1 0 1 B I M 5
+FB
x2
(+B_)
LPF
RF
AMP
SW
VCO-A
Q 3 8 0
2 S C 4 7 2 6 ( P, Q )
D 3 8
33CA
352.85-
1 S S 3 9 0
Doubler
412.85MHz
33RA
IF IC(A-BAND)
47RA
IC281 AK2365A
A-BAND
1stIF 57.15MHz
33RA
450kHz
2nd
1st
Mixer
MCF
Mixer
IF
BPF
AGC
IF
57.15M
RF
BUF
AMP
AMP
SW
Q 2 8 2
2 S C 5 1 0 8 F T / Y /
X F 2 8 1
L 7 B - 0 0 1 4 - 0 0
Q 2 8 1
AUS
LIMI
B B 5 0 6 C F S - H
AMP
TER
RF
SW
33C
BUS
19.2MHz
57.6MHz
x3
IF_LO_REF
Q 3 7 8
Q 3 8 2
2 S C 4 9 1 5 - F
RF
Trippler
SW
5C
33CB
AVS
IF IC(B-BAND)
IC284 AK2400
DIV3
AMP
PLL
IF
RF
BUF
SW
33RB
AMP
B-BAND
1stIF 58.05MHz
BVS
1st
MCF
BPF
Mixer
DIS
LIMI
AGC
AGC
58.05M
CRI
AMP
AMP
TER
2nd
450kHz
Mixer
X F 2 8 2
L 7 B - 0 0 1 5 - 0 0
I C 2 8 3
U P C 2 7 5 7 T B - A
Noise
C N 1 8 1
AMP
EB760AF-0520A
RF
SW
LDB
CN182
EB770AF-0520C
BHFS
B-BAND 76-108MHz
K
L
M
J 5 7 6
E 0 3 - 0 1 7 0 - 0 5
3.15A
SW
SW
Q580
HS8K1
Q579
UT6K3
F 5 7 7
DCIN
D 5 7 7
F Z A 1 0 B Q - 3 R 1 5
11.0-15.9V
HSDRV
LSDRV
RBDRV
G N 1 G
SW
ACSN
ACSP
VIN
Charge IC
BCSP
IC585 NCP1871
VBAT
BCSN
TS
PMO
I2CDT
40C
PRHOTB
I2CCK
VINoK
SUB CPU
BATDRV
4A
SW
+BATT
Q581 UT6K3
F 5 7 6
7.4V
D 5 7 6
F Z A 1 0 B Q - 4 R 0
G N 1 G
GND
BAT_DET
S
TX-RX
TX 144-145.995MHz
430-439.995MHz
RX 0.1-524MHz
430T
+B_
430-439.995MHz
D 2 , D 3 , D 1 8 , D 1 9 ,
D 4 2 , D 4 3
LPF
HPF
LPF
UHF
RF
RN142SM
FINAL
Matching
SW
AMP
ANT
Q 2
D 11
D 8
2 S K 3 4 7 6 - F
APC
1 S S 4 0 0 S M
1 S S 4 0 0 S M
D 1 2
D 9
R N 1 4 2 S M
RN142SM
ATT
ATT
Surge
ATT
ATT
Protection
D 4 4
F 0 K - 0 1 7 5 - 0 0
LPF
LPF
144T
144-145.995MHz
D 4 , D 5
APC SW
D 1 3 , D 1 4
D 4 5
LPF
Q5
VHF
RF
RN142SM
DMA56100
Matching
SW
D 1 0 , D 1 7
E D Z V 1 8 B
VOLTAGE
DET1
SHIFT
33S
CURR
TEMP.
PROTECTION
FTH
A-BAND 410-470MHz
47C
47C
D 1 7 3
D 1 7 1 , D 1 7 2
Q 1 7 1
Q 1 7 2
D 1 9 3
R N 2 6 2 C S
BPF
B B Y 6 5 - 0 2 V
B B 5 0 6 C F S - H
BB506CFS-H
R N 2 6 2 C S
RF
RF
RF
AMP
AMP
SW
AUS
OBPFA
OAGCA
AUS
BUS
AUS
BUS
B-BAND 310-524MHz
47C
D 1 7 9
D 1 7 7 , D 1 7 8
Q 1 9 2
BPF
R N 2 6 2 C S
B B Y 6 5 - 0 2 V
RF
B B 5 0 6 C F S - H
AMP
OBPFB
OAGCB
BUS
A-BAND 136-174MHz
47C
47C
D 1 8 5
D 1 8 2 , D 1 8 4
Q 1 7 8
Q 1 7 9
D 1 8 1
R N 2 6 2 C S
BPF
1 S V 3 2 5 F T
RF
B B 5 0 6 C F S - H
RF
BB506CFS-H
RF
R N 2 6 2 C S
AMP
AMP
SW
AVS
OBPFA
OAGCA
AB220S
BVS
AVS
B-BAND 108-310MHz
47C
D 1 8 8
1 S V 3 2 5 F T
D 1 9 2
D 1 8 9 , D 1 9 1
Q 1 9 3
D 1 8 0
BPF
HPF
R N 2 6 2 C S
B B Y 6 5 - 0 2 V
RF
B B 5 0 6 C F S - H
RF
RN262CS
AMP
SW
OBPFB
ABVS
OAGCB
BVS
D 1 9 8
D 2 0 2
Q 1 8 3 Q 1 8 5
C N 1 8 4
1 S S 3 9 0
LPF
B B Y 6 6 - 0 2 V
R E 1 C 0 0 1 U N
E B 1 7 0 B B - 2 0 0 3 A
RF
RF
B-BAND 0.1-76MHz
SW
SW
C N 1 8 3
E B 1 6 0 A G - 2 0 0 3 A
47C
47C
SWANT_S
OBPFB
SWANT_S
MWANT_S
MWANT_S
Q 1 9 1
D 1 9 9
D 1 9 7
D 2 0 4
1 S S 3 9 0
RF
2 S C 5 6 6 1 / N P /
1 S S 3 9 0
LPF
RF
RF
RF
1 S S 3 9 0
AMP
AMP
SW
SW
Q 1 9 0
BARANT
2 S C 5 6 6 1 / N P /
OAGCB
OAGCB
SWANT_S
BHFS
BHFS
BHFS
MWANT_S
BARANT
47C
Q 1 9 5
D 2 0 1
RF
2 S C 5 6 6 1 / N P /
LPF
RF
1 S S 3 9 0
AMP
SW
BFMS
MW/SW
N
O
P
Q
(No.RA044<Rev.001>) 2-3

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