Kenwood NX-300 Service Manual

Also see for NEXEDGE NX-300: Brochure Instruction manual Instruction manual Instruction manual Instruction manual

Contents

NX-30016COMPONENTS DESCRIPTIONTX-RX unit (X57-7370-10)Ref. No. Part Name DescriptionIC404 IC OP AMP (RSSI/VAGC)IC500 IC Temperature sensorIC501 IC DC AMP for TCXO MODIC502 IC PLL ICIC503 IC DC AMP for VCO tuneIC504 IC OP AMP (VCO MOD/APC)IC600 IC Auto power controlIC700 IC BufferIC701 IC FM ICIC702,703 IC DC AMP for BPFIC900 IC 50T controlIC901 IC DC/DC converterIC902 IC Voltage regulator (50C)IC903 IC Voltage regulator (33C)Q503 Transistor Ripple filterQ504 FET Buffer AMPQ505 Transistor Buffer AMPQ507 Transistor Ripple filterQ508,509 FET VCO oscillationQ510,511 FET T/R switchQ512,600 Transistor Buffer AMPQ601 Transistor RF AMPQ602 FET RF AMPQ603 FET RF drive AMPQ604 Transistor APC switchQ605 FET APC switchQ606 FET RF final AMPQ607 Transistor APC switchQ608 FET APC switchQ610 Transistor APC switchQ700 Transistor 2nd Local buffer AMPQ701 Transistor IF AMPQ703 FET MixerQ704 Transistor Ripple filterQ705 FET RF AMPQ706 FET RF AGCQ900 Transistor TX/RX LED switchQ901 FET SB3 switchQ902 FET 50R switchQ903 FET 50IF switchQ904 FET DC/DC converter switchQ905 Transistor 50T switchD501 Diode Ripple filterD505 Diode Bypass diodeRef. No. Part Name DescriptionD506,507, Variable Frequency controlD510,511 capacitance diodeD514~517 Variable Frequency controlcapacitance diodeD518 Diode Ripple filterD519 Variable TX modulationcapacitance diodeD600,601 Diode Local switchD604 Zener diode APC switchD605 Zener diode APC protectD606,607 Diode Antenna switchD700 Diode Ripple filterD702~704 Variable Vari-cap tunecapacitance diodeD705 Diode RF AGCD706,708 Variable Vari-cap tunecapacitance diodeD709 Diode Antenna switchD710 Variable Vari-cap tunecapacitance diodeD711 Diode Antenna switchD900 LED TX/RX LEDD901 Diode Reverse protectionD902 Diode 50T control