Icom IC-PCR100 Service Manual

Also see for COMMUNICATION RECEIVER IC PCR100: Instruction manual

Contents

2 - 1SECTION 2 INSIDE VIEWS¡MAIN UNITBottom viewTop view0.01–1.8 MHz RF filter circuit1.8–15 MHz RF filter circuit15–30 MHz RF filter circuitVCO3 circuitReference oscillator(X5: CR-629 12.8 MHz)VCO1, VCO2 circuitsAGC control circuitAGC amplifier (Q45: 2SC4211)FM discriminator(X2: CDBCA450CX24)CPU(IC21: HD6433644A)IF 15 kHz filter(FI7: CFWS450E)IF 6 kHz filter(FI6: CFWS450HT)AM demodulator(D63: 1SS372)FM 3rd LO signal(X1: CR-630 12.5 MHz)150–300 MHz RF filter circuit350–700 MHz RF filter circuit700–1300 MHz RF filter circuitAF amplifier (IC23: M62429)AF power amplifier (IC25: NJM2073)0.01–1.8 MHz RF filter circuit30–50 MHz RF filter circuit50–150 MHz RF filter circuit1st mixer (IC4: μPC2721)PLL IC (IC8: MC145220)WFM demodulator IC(IC7: LA1832M)FM demodulator IC(IC10: TA31136)IF amplifier (Q29: 3SK131)EEPROM (IC20: X25020SI)2nd mixer (IC5: μPC2721)HF RF amplifier (Q12: 2SK2171)