Kenwood NX-900 Service Manual

Also see for NEXEDGE NX-900: Function reference Instruction manual Instruction manual

NX-90024Ref. No. Part Name DescriptionIC707 IC RXAF/RXEI switchIC708 IC AF switch (TXO/TXI)IC709 IC SUM AMP(AI/TONE/MI1 MI2)/(MOD/DI)IC710 IC AF switch (AI TONE OPT9/VREF)IC711 IC SUM AMP (AF)/VREFIC713 IC AO switchIC714 IC Level shiftIC715 IC AF power AMPIC716 IC 1st mixerIC717 IC DSPIC718 IC AND (CLKX0/SCK1)IC719 IC D/A converterIC720 IC DI SMFQ1 Transistor Ripple filterQ2 FET LNAQ4 Transistor Ripple filterQ5,6 FET VCOQ7,8 FET T/R switch (VCO)Q9 Transistor Buffer AMP (VCO)Q10 Transistor Buffer AMP (RF)Q11 FET Buffer AMP (19.2MHz)Q150 FET TX pre-drive AMPQ151 FET TX drive AMPQ201,202 Transistor Switch (W/N)Q203 Transistor 2nd Local buffer AMP (x3)Q204,205 Transistor 1st IF AMPQ208 Transistor Buffer AMP (Local)Q212 Transistor Wide/Narrow switchQ401 Transistor Switch(Over DC supply protection)Q402 Transistor DC switch (SB)Q403 Transistor DC switch (IGN)Q404 FET DC switch (SB)Q405 Transistor DC switch (SCTAM1)Q406 FET DC switch (33BU)Q407 Transistor DC switch (80T)Q408 Transistor DC switch (80R)Q409 Transistor DC switch (50R)Q410 FET DC switch (50MC)Q411 Transistor DC switch (33BU)Q412 Transistor DC switch (50MC)Ref. No. Part Name DescriptionQ413 Transistor DC switch (80T)Q414 Transistor DC switch (80R)Q415 Transistor DC switch (50R)Q416 FET DC switch (50IF)Q420 Transistor RF buffer AMPQ501 FET DC switchQ701 FET SQL switch (W/N)Q702 Transistor Noise AMPQ703 FET Tone switchQ704,705 Transistor LimitQ706 FET Mute (MI1)Q707 FET Mute (MI2)Q708 Transistor OPT10 switchQ709 Transistor AF muteQ710 Transistor Audio mute switchQ901,902 Transistor DC switch (AUXO1)Q903 FET SwitchD1 Surge absorber Surge absorptionD2 Diode Bypass diodeD3,4VariablecapacitancediodeFrequency controlD7,8VariablecapacitancediodeFrequency controlD10~12VariablecapacitancediodeFrequency controlD14VariablecapacitancediodeTX modulationD21 Diode 2nd Local switchD101 Diode T/R switchD103 Diode Antenna switchD108,109 Diode TX power detectD201,202 Diode CF switch (W/N)D205 Diode T/R switchD401 Zener diode Over DC supply protectionD403 Diode Reverse current preventionD404 Surge absorber Surge absorptionD 405 Diode Reverse protectionD406 Diode Reverse current prevention (BLVL)D407 Diode DC/DC converter (50M)D408 Diode Reverse current prevention(OR 33M/SBC_2)COMPONENTS DESCRIPTION