Icom ic-m506 Service Manual page 39

• NMEA2000 UNIT (UX-232)
LOGIC UNIT
(IC-M506)
5V
L3V +3
CTRL
Q1:KTA2015
Q2:LDTC144EE
I C F 3 CI-V
Q3:L2SA1576
Q4:L2SC4081
D1:L1SS400
NM2K DATA
• AIS UNIT (UX-231)
MAIN UNIT
J1
RF in
1 2
3 4
A I S D O A I S 8 V
5 6
X1 CR-963
TCXO
41.0583 MHz
X5 CR-869
TCXO
19.200 MHz
AIS8V
MAIN UNIT
IC2:NJU7704
RESET
C L O N E
I/F
BUFF
IC3:TC7WH14FK
IC1:STM32F103RCT6
X1
CR-984
FI1 LBT16201
Q1 3SK293
SAW
BPF
Q2 2SC4215 Q3 2SC4081
X3 AMP
123.175 MHz
IC6 TC7S08IC7 TC7S86
38.400 MHz
AMP X2
IC4 XC6202 IC5 BU4331
VDE
3.5V
REG TRESET
AVDD
REG DVDD
RFVDD
Buffer
NMEA
UART Formter
Buffer
CONNECT UNIT
CAN TX PHOTO
COUPLE
BUFF
IC6: IC5:
SN74AHCT1G04 PC410L0NIP0F
PHOTO
CAN RX
COUPLE BUFF
IC4: IC3:
PC410L0NIP0F SN74LVC1G04
FI2,3 FL-470
XTAL
BPF
38.850 MHz
2ND LO
BRF
BUFF
FI5,6 FL-473
XTAL
BPF
38.800 MHz
X3
2ND LO
BUFF
CR-968
38.350 MHz
IC3 EN25F10
J2
EEPROM
Ext.Program
Main EEPROM
clock SPI
PLL Port
HDLC NRZI GMSK
decode decode decode
HDLC NRZI GMSK
decode decode decode
9-3
IC1:TA78M05F
D1:RR264M
+5
REG
J1
1
2
3
4
LEVEL 5
CONV
IC2:HA13721FPKEL
FI4 LTWC450 JTBM450CX70
X2
CERAMIC
BPF
450 kHz IC1 NJM2591V
2NDIF FM
AMP DET
RSSI
FI7 LTWC450 JTBM450CX70
X4
CERAMIC
BPF
450 kHz IC2 NJM2591V
2NDIF FM
AMP DET
RSSI
IC8 CMX7032
AMP
MUX
AMP
2 1
5
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