Kenwood NX-300 Service Manual

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

Contents

NX-30015COMPONENTS DESCRIPTIONControl unit (X53-4260-XX)Ref. No. Part Name DescriptionIC1 IC LCD contrastIC101 IC FLASH ROMIC102 IC DSPIC103 IC SRAMIC104 IC 2 input AND gateIC105 IC ResetIC106 IC RTCIC107 IC BufferIC108 IC ASICIC109 IC 2 input AND gateIC401,402 IC Bus switchIC403 IC Voltage doubling inverterIC404 IC Voltage regulator (33M)IC405 IC Voltage regulator (15M)IC406 IC Voltage regulator (33A)IC407 IC DC/DC converterIC408 IC AF AMPIC409 IC AF switchIC410 IC IF AMPIC411 IC Voltage regulator (50U)IC412,413 IC Audio AMPIC414 IC ResetIC415 IC 2 input AND gateIC416 IC Voltage regulatorIC417,418 IC Dual bus bufferIC701 IC I/O controlIC702 IC APC LPFIC703 IC D/A converterIC704 IC RX AF LPFIC705 IC Modulation LPFIC706 IC MIC AMPIC707 IC RX AF switchIC708 IC Voltage regulator (5A)IC709 IC Sidetone muteIC710 IC MOD/MIC summing AMPIC711 IC SQL BPF/SQL DC AMPIC712 IC MIC switchIC713 IC 1.65V REF/RX summing AMPIC714 IC OPT switchIC715,716 IC VOX AMPQ1,2 Transistor LCD backlight switchQ3 FET LCD backlight switchQ4 FET MIC shift controlQ5 FET MIC shift switchQ101,102 Transistor 12key backlight switchQ103 FET 12key backlight switchQ401,402 FET Level converterRef. No. Part Name DescriptionQ403 Transistor SB2 switchQ404 FET SB2 switch controlQ405 FET AF AMP switchQ406,407 Transistor Voltage regulator (AF AMP)Q408,409 Transistor DC switchQ410 FET DC switchQ411 FET Level converterQ412 FET DC switchQ413~415 Transistor DC switchQ701 Transistor OPT switchQ702 FET Tone switchQ703 FET W/N noise switchQ704 Transistor SQL noise AMPQ705,706 Transistor MIC AGCQ707 FET MIC muteD1,2 LED 12key backlightD3,4 LED LCD backlightD5,6 LED 12key backlightD7,8 LED LCD backlightD9,10 LED 12key backlightD11 Diode LCD backlight switchD12~16 Diode Reverse current preventionD17~19 Zener diode Surge absorptionD20 Zener diode PTT RF OPT controlD21 Zener diode EMC MSW SSW controlD22 Diode RXD controlD23 Diode TXD controlD101 Diode 12key backlight switchD102 Diode Reverse current preventionD401~404 Diode 12key controlD405,406 Diode DC/DC converterD407 Diode Reverse current preventionD408 Diode DC/DC converter controlD409,410 Diode SP controlD411 Diode RTC BATT controlD412 Diode DC switch controlD413 Diode RTC BATT controlD414 Diode TX LED switchD415 Diode RX LED switchD416 Diode 33M controlD417 Diode 33A controlD701 Diode 5A switchD702 Diode PLD controlD703,704 Diode DetectorD705 Diode Noise detectorD706 Diode DetectorD707 Diode VOX