Kenwood NX-300 Service Manual

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

Contents

NX-300 ADJUSTMENT3811 : GREEN (5M)TUBESCREW8 : YELLOW (PF SW)2 : RED (RX AF OUTPUT)3 : BLACK (RX AF OUTPUT)10 : BROWN (GND)6 : BROWN (MIC GND)5 : WHITE (MIC INPUT)7 : BLUE (PTT SW) GND → ONRED (2)BLK (3)100μ 10V100μ 10V8ΩWHT(5)BRN (6)BLU (7)BRN (10)PTT SW+++To transceiverAF VoltmeterAudio generator10μ 10V4. Universal connectorUse the interface cable (KPG-36/36A) for PC tuning or thelead wire with plug (E30-3287-18) and screw (N08-0535-08)for panel tuning. Connect the plug to the universal connectorof the transceiver and tighten the screw.The lead wire with plug (E30-3287-18) and screw (N08-0535-08) terminals are as follows. Numbers are universalconnector terminal numbers.Caution1. When connecting the plug to the universal connector ofthe transceiver, a short circuit may occur. To prevent this,be sure to turn the transceiver POWER switch off.2. Since the RX AF output is a BTL output, there is a DCcomponent. Isolate this with a capacitor or transformer asshown in the figure.3. Do not connect an instrument between red or black and GND.• Universal connector• Panel tuning1 : SSW3 : SP–5 : EMC7 : PTT9 : OPT11 : 5V13 : RXD2 : SP+4 : MSW6 : ME8 : PF10 : E12 : TXD14 : NC• PC tuningConnect the wires to the PCB in the connector case ofinterface cable.For output the wires out of the connector case, need toprocess the connector case.Connector caseKPG-36/36ARemove thescrewPCB layoutShieldAF voltmeterAudio generator100μ 10V100μ 10V10μ 10V+++8Ω