Kenwood NXR-710 Service Manual

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NXR-71041ADJUSTMENTCommon SectionItem ConditionMeasurement AdjustmentSpecifications / RemarksTest-equipment Unit Terminal Unit Parts Method1. Setting 1) Connect the unit to a suitable power supply (13.6V).2) Turn the power switch on after connecting a PC and FPU cable to the radio.3) Start up the program for the adjustment.2. RX AssistvoltageAdjustFPU Test mode1) Adjust Item: [Receive Assist]2) Adjust Item: [A: Low],[A: Center], [A: High],[B: Low], [B: Center],[B: High]PCADJ3.0V ±0.1V[V] indicator on the PC win-dow shows “VCO lock volt-age”.Change the adjustment valueto get “VCO lock voltage”within the limit of the speci-fi ed voltage.Press [Apply All] button tostore the adjustment value.Confirm the VCO lock voltageapproximately 3 secondsafter the adjustment value ischanged.3) Adjust Item: [A: Low],[A: Center], [A: High],[B: Low], [B: Center],[B: High]DVM TX-RX RX_CV Check 3.0V±0.1V3. TX AssistvoltageAdjustFPU Test mode1) Adjust Item: [Transmit Assist]2) Adjust Item: [A: Low],[A: Center], [A: High],[B: Low], [B: Center],[B: High]Press [Transmit] button.PCADJ3.0V ±0.1V[V] indicator on the PC win-dow shows “VCO lock volt-age”.Change the adjustment valueto get “VCO lock voltage”within the limit of the speci-fi ed voltage.Press [Apply All] button tostore the adjustment value.Confirm the VCO lock voltageapproximately 3 secondsafter the adjustment value ischanged.3) Adjust Item: [A: Low],[A: Center], [A: High],[B: Low], [B: Center],[B: High]Press [Transmit] button.DVM TX-RX TX_CV Check 3.0V±0.1V4. Sensitivity 1AdjustBPF AdjustFPU Test mode1) Adjust Item: [Sensitivity 1]2) Adjust Item: [Low], [Low’],[Center], [High’], [High]PCADJWrite the value asfollowings (typicalvalue)[Low] = 55[Low’] = 70[Center] = 85[High’] = 110[High] = 135Press [Apply All] button tostore the adjustment value.Variable-Capacitor Tune volt-age is adjusted.(Output voltage is adjustmentof BPF)