Icom IC-M803 Service Manual page 6

• MAIN UNIT
ALC AMPLIFIER
(IC5911)
J5101
METER AMPLIFIER
(IC5921)
POWER SUPPLY CIRCUIT
(Under the shield cover)
BUFFER
(IC4072)
J4071
D/A CONVERTER
(IC5051)
EXPANDER
(IC5061)
HIGH-VOLTAGE
SOURCE DRIVER
(IC4001)
HIGH-VOLTAGE
SOURCE DRIVER
(IC4002)
A/D CONVERTER
(IC5201)
J4001
D/A CONVERTER
(IC5281)
EXPANDER
(IC5063)
PRE-AMPLIFIER CIRCUIT
(for DSC receiver)
EXPANDER
(IC5064)
EXPANDER
(IC5062)
BPFs
(for DSC receiver)
BPFs
(for transceiver)
J4941
J5102
J4701
YGR AMPLIFIER CIRCUIT
J4401
FLASH ROM
(IC5104)
REAL TIME CLOCK IC
(IC5081)
J4421
2-2
REALTIME CLOCK
BACKUP BATTERY
(BT5081)
J5071
[MAINTENANCE]
CPU
(IC4901)
EEPROM
(IC5001)
J4141
[ACC]
FPGA
(IC5101)
EEPROM
(IC5001)
24.576 MHz FPGA CLOCK
OSCILLATOR CIRCUIT
AF LPF
(IC5541)
–12 V DC-DC
CONVERTER
(Under the shield cover)
D/A CONVERTER
(IC5501)
J4201
J4051
A/D CONVERTER
(IC5621)
AF LPF
(IC5521)
PRE-AMPLIFIER CIRCUIT
(for transceiver)
J4181
J4161
[EXT-SP]
AF POWER AMPLIFIER
(IC5601)