Icom IC-E7 Service Manual

Also see for IC-E7: Instruction manual Service manual Instruction manual

Contents

SECTION 2 INSIDE VIEWS2 - 1CPUCPU(IC4: M30220FCRP)(IC4: M30220FCRP)PTT detectorPTT detector(Q14: 2SA1832)(Q14: 2SA1832)D/A convertorD/A convertor(IC13: BH2220FVM)(IC13: BH2220FVM)ReferenceReferencefrequency generatorfrequency generator(X1: CR-813 7.325MHz)(X1: CR-813 7.325MHz)Reset ICReset IC(IC2: R3112N291A)(IC2: R3112N291A)CPU(IC4: M30220FCRP)PTT detector(Q14: 2SA1832)D/A convertor(IC13: BH2220FVM)CTCSS filter(IC5: LM2904PWR)Microphone amplifier(IC8: LMV324IPW)Referencefrequency oscillator(X1: CR-813 7.325 MHz)Reset IC(IC2: R3112N291A)Antenna switch circuitAntenna switch circuit+3V regulator+3V regulator(IC10: R1111N321B)(IC10: R1111N321B)PLL ICPLL IC(IC18: ADF4110BCPZ)(IC18: ADF4110BCPZ)VCO boardVCO boardAF volumeAF volume(IC7: SM6451B)(IC7: SM6451B)AF amplifierAF amplifier(IC9: NJM2070M)(IC9: NJM2070M)IF ICIF IC(IC15: TA31136FNG)(IC15: TA31136FNG)1st mixer1st mixer(IC16:(IC16: μPC2757TB)PC2757TB)Antenna switching circuit+3V regulator(IC10: R1111N321B)PLL IC*(IC18: ADF4110BCPZ)VCO board* Located under the VCO boardAF volume*(IC7: SM6451B)AF power amplifier(IC9: NJM2070M)FM IF IC(IC15: TA31136FNG)1st mixer(IC16: μPC2757TB)• MAIN UNIT (TOP VIEW)• MAIN UNIT (BOTTOM VIEW)• PA BOARDFinal amplifier*Final amplifier*(Q3: RQA003)(Q3: RQA003)Drive amplifierDrive amplifier(Q2: 2SC5998)(Q2: 2SC5998)Pre drive amplifierPre drive amplifier(Q1: 2SC5006)(Q1: 2SC5006)Power amplifier*(Q3: RQA003)Drive amplifier(Q2: 2SC5998)Pre-drive amplifier(Q1: 2SC5006)* Located bottom side of the point.