Kenwood NX-320 Series Service Manual

Also see for NEXEDGE NX-320: Instruction manual Instruction manual Instruction manual Instruction manual Instruction manual

NX-32018Display unit (X54-3760-XX)Ref. No. Part Name DescriptionIC1 IC ASQ BPFIC2 IC AF LPF/MIC amplifierIC4 IC D/A converterIC6 IC VCO MOD/VREFIC8 IC LCD driverQ1 Transistor TX/BUSY LED switchQ2 FET SQL noise BW switchQ3 Transistor SQL noise amplifierQ4,5 Transistor MIC AGCQ6 Transistor KEY backlight switchQ7 Transistor KEY backlight switch controlQ8 Transistor LCD backlight switchD1 LED TX/BUSY LEDD2 Diode Noise detectorD3,4 Diode AGC detectorD7~14 LED KEY backlightD15,16 Diode KEY controlD18,19 LED LCD backlightTX-RX unit (X57-8050-XX)Ref. No. Part Name DescriptionIC101 IC OP AMP (APC)IC201 IC DC amplifier (BPF)IC302 IC FM systemIC304 IC DC amplifier (RSSI/ASQL)IC402 IC DC amplifier (Assist)IC403 IC PLL systemIC404 IC DC amplifier (CV/APC)IC501 IC Voltage regulator (33A)IC502 IC Voltage regulator (33M)IC503 IC DC/DC converter (15M)IC504 IC Voltage regulator (50C)IC505 IC Voltage regulator (33C)IC506 IC DC/DC converter (38M)IC507 IC Voltage detector (BATT)IC509 IC DC/DC converter (100C)IC601 IC Flash memoryIC603 IC DSPIC605 IC SRAMIC607 IC Voltage detector (Reset)Ref. No. Part Name DescriptionIC609 IC Buffer (Clock)IC610 IC ASICIC611,612 IC AND gate (2 input)IC613 IC Motion sensorIC901 IC AF power amplifierIC902 IC Voltage regulator (50V)IC904 IC OP AMP (Beep/voice/RX AF)Q102 Transistor Pre-drive amplifierQ103 FET Drive amplifierQ104 FET RF final amplifierQ105~109 Transistor APC switchQ110 FET PD switchQ201 FET 1st mixerQ202 FET RF AMP (RX)Q301 Transistor Tripler (2nd local)Q303 Transistor IF amplifierQ401 FET RX VCOQ402 FET TX VCOQ403 Transistor Ripple filterQ405 Transistor Buffer amplifierQ406,407 FET T/R VCO switchQ408 Transistor Buffer amplifierQ501 FET DC switch (SB2)Q502 FET DC switch control (SB2)Q503 Transistor DC switch (50R)Q505 Transistor DC switch (50T)Q506,507 FET Level converterQ509 Transistor DC/DC control (100C)Q510 Transistor DC/DC control (38M)Q511 Transistor DC switch control (50T)Q512 FET DC switch (50CS)Q602 FET DC switch (System)Q901 Transistor DC switch (AF mute)Q902 Transistor DC switch (AF PA amplifier)Q903 Transistor DC switch (AF mute)Q904,905 FET AF power muteQ906 Transistor EXT/MIC switchQ907 FET Level converterD101 Zener diode APC protectD102,103 Diode Antenna switchD105,106 Diode Antenna switchCOMPONENTS DESCRIPTION