Kenwood NXR-710 Service Manual page 98

NXR-710
IF AMP
Q301
2SC5337
194.05~
232.05MHz
MIX
58.05MHz
IC300
ADL5350ACPZ
BUFFER
IC401(A/2)
TC75W51FK(F)
RSSI
CF
IF-IC
Hz
IF IC403
IF AMP
NJM2287V
IC400
AD8051ART
IC405~408: TC7W53FK(F)
CF (Narrow)
SW SW SW
SW
IC405 IC406 IC408 IC407
CF (VNarrow)
CF (Wide)
IF AMP
IC404
MCP6021-E/0T
N802
N39
33M 15M 33A
IFR
MCU
A
IC20
AO[1~5]
T
/FRST
A[0~21], D[0~15]
/RD, /WR, /CS0, /WP
A[0~17], D[0~7]
/RD, /WR, /CS2
A[0~20], D[0~15],
D, /WR, /HRDY, /CS3,
/HDS2
ST
/DRST
/MCCSXCN, /MCCSRCN,
MCDICN, MCDOCN, MCSCKCN
MCSCKAF, /MCCSAF,
MCDIAF, MCDOAF
/SYMTIM, /DINT, /DWUP, FSDET, /HINT
DSP
BUFFER VCTCXO
IC16
X1
_CLK
BSHIFT
SM5023CNDH-G (18.432MHz)
XTAL_IN
VREF
Squelch DAC
LRCLK,
IC14
BICLK LDR
AK4386VTP
AMP
AMP AMP
IC13(A/2,B/2) IC15(A/2)
Q4
TC75W51FK(F)
TC75W51FK(F) 2SC4617(S)
98
BLOCK DIAGRAM
10MHz or 19.2MHz
D504,505
JDP4P02AT
SPSCLK0,SPSD0
RXVCOA/B,
/RXPCS_TR
1st Lo AMP
Q203
2SC5636
3dB ATT
RX
VCO/PLL
LOW PASS FILTER
X58-5070-10
57.6MHz
AGC
136~174MHz
LEVEL CONVERTOR
/485_RE1, RXD1, TXD1, 485_DE1 IC7:TC7WT125FUF
IC10:TC7SH125FU-F
LEVEL CONVERTOR
/485_RE2, RXD3, TXD3, 485_DE2 IC8:TC7WT125FUF
IC11:TC7SH125FU-F
KEYI[0~2], KEYO[0~1]
/PSW
VLI
AMP
MICADC0 IC405(C/4)
NJM2734V
PTT, TXD0, TXD2
LEVEL CONVERTOR
(3.3V→5V)
IC18
TC74VHCT244AFK
LEVEL CONVERTOR
(3.3V↔5V)
/IOINT, EPTT, HK
IC19
RXD0, RXD2
TC7MBD3245AFK
RTC
IC17
/RINT, 32K
R2023T
32.768kHz
I2CCK, I2CDA
SPSCLK1, SPSD1
TMP, HWV1, HWV2, FWD, TXASSIST, RXASSIST, TX_CV, RX_CV, AGC, TXVCOB, TXCOA, RXCOA/B, LDT, LDR
RAMP_TX
MICADC1
SPDAC AMP
IC411(D/4)
PWM1
NJM2734V
ADC1
VREF
AMP
IC411(A/4)
NJM2734V
AMP
IC411(C/4)
REF AMP
NJM2734V
IC405(B/4)
NJM2734V
/EVDSCS_EV,
VREF
SPSCLK1,
SPSD1
AMP
IC500 (B/2)
TC75W51FK(F)
DETECTOR
D503
HSM88AS-E
SW
LOW PASS FILTER
AMP
Q504
1dB ATT
LOW PASS FILTER
LDR
2SC4617(R)
REF
1dB ATT
RX_CV
CV AMP
IC200
TC75W51FK(F)
AMP RXASSIST
IC201
LMC7101BIM5
x3
Q202
2SC5636
LOW PASS FILTER
BAND PASS FILTER BAND PASS FILTER
LNA AMP
Q101
2SC5337
BUFFER AMP
IC100
LMC7101BIM5
TRANSCEIVER
IC4
ISL8485EIBZ
TRANSCEIVER
IC5
ISL8485EIBZ
AMP
IC27(A/2,B/2)
TC75W51FK(F)
SPSCLK1_DIS, SPSD1_DIS
TXD2_DIS
TXD0_RS
/FRST_IO
BUFFER
IC21
ADM101EARMZ
RXD2_DIS
RXD0_RS
IOINT_5V
I/O Expander
IC22
I2C_5V
MCP23017TE/ML
EPTT_5V
SELECTOR
/RST
AND GATE
IC26
SR_STR
TC7SET08FU-F
X SR_STR_DIS
X2
STR_SEL
SELECTOR
OR GATE
IC25
/EVDSCS
TC7SH32FU-F /EVDSCS_EV
_
STR_SEL
VREF
RD
AMP
IC406(A/2,B/2)
NJM2732V
/16_8PCS, /TXPCS, SPSCLK0, SPSD0, /EWP, /IOCS, /EVCS, SBC
AMP
IC404(A/2)
MODDAC NJM2732V
VREF
AMP
IC28 RAMP
AMP
TC75S51FE(F)
TA
IC405(A/4) TA
NJM2734V
AMP
IC405(D/4)
NJM2734V
VREF TD
TD
TD
SW
IC407
TC7W53FK(F)
TD_SW
RA
SELECTOR
AMP
IC411(B/4) NAND GATE
DAC
IC401
NJM2734V
IC412
TC7SH00FU-F
M62364FP-F
Q405
DTC363EU
SW
SW
IC402
TC7S66FUF
/AF_MUTE
AMP
IC500 (A/2)
TC75W51FK(F)
BUFFER
Q501
2SC4617(R) EXT_IN
10MHz
AGC AMP
Q503
3SK294-FP
OSC
X500
AMP
19.2MHz
Q502
2SK3737-5
LOW PASS FILTER
RX ANTENNA
136~174MHz
BUFFER AMP
IC101
LMC7101BIM5
CN5
N_SYNC
N_SYNC1_A, N_SYNC1_B
N_SYNC2_A, N_SYNC2_B
to CN40 DISPLAY
C
VLI_DIS
MIC
SR_OE_DIS
CN44
DSUB25
TXD0_RS, RXD0_RS
SC, EXT_MON
AUXIO[1~6]
AI[1~3]
B
BER_CLK_5V
BER_DATA_5V
to
LEVEL CONVERTOR
IC23
RD
TA
TD
RA
SPM
CN38 TX-RX
33A
/PCS_DSP
RXPCS_TR
/RXPCS
SELECTOR
AND GATE
IC24
TC7SH08FU-F
AMP MOD
VREF IC404(B/2)
NJM2732V
RSSI
CN41
SB
AMP
IC15(B/2)
TC75W51FK(F)
CN42
to MCU
TEST/SPKR
IC20
A
EXT_RSSI
AO[1~5]
Q6~10
AMP_B
SPO
SPI
Power
AMP
/PSW LA4422-E
CN43
SPO