Icom IC-M23 Service Manual page 6

Vhf marine transceiver
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TX POWER AMP
(Q54)
TX POWER AMP
(Q55)
PRE-DRIVE AMP
(Q53)
VCO
PLL IC
(IC1)
REFERENCE FREQUENCY
OSCILLATOR
(X1)
EEPROM
(IC340)
CPU CLOCK
(X360)
• MAIN UNIT
(BOTTOM VIEW)
2 - 2
WET SENSING JACK
(J602)
5 V REGULATOR
(IC602)
CHARGING CONTROL SW
(Q602)
AF POWER AMP
(IC362)
1ST IF FILTER
(FI150)
1ST IF FILTER
(FI151)
IF DEMODULATOR IC
(IC170)
2ND IF FILTER
(FI170)
NOISE AMP
(IC365)
DISCRIMINATOR
(X170)
AF LPF/LIMIT AMP/AF AMP
(IC200)
D/A CONVERTER
(IC190)
CPU
(IC360)
3 V REGULATOR
(IC220)
FLASHING LED
(DS247)

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