Icom IC-M21 Service Manual - Section 2
Other manuals for IC-M21:
Instruction Manual, Instruction Manual
Manual is about: VHF MARINE TRANSCEIVER
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SECTION 2
INSIDE VIEWS
• MAIN UNIT
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Antenna switching circuit
(D52: 1SV307)
Power amplifier
(Q54: 2SK2974)
APC
(IC50: NJM2125F)
IF amplifier
(Q151: 2SC2714 Y)
TX/RX switch
(D50, D51: MA77)
Antenna switching circuit
D90: 1SV307
D91: 1SS375
(
)
1st mixer
(Q150: 3SK272)
VCO circuit
IF DETECTOR IC
(IC170: TA31136FN)
PLL IC
(IC1:
µ
PD3140GS)
D/A converter
(IC190: M62363FP-650C)
CPU
(IC360: HD6433844RA60H)
EEPROM
(IC340: HN58X2416TI)
Mic amplifier and
low pass filter circuits
(IC200: NJM2902V)