Kenwood TH-K2AT Service Manual

Also see for TH-K2AT: Service manual Instruction manual Instruction manual

TH-K2AT/K2E/K2ET40ANTANTANTM ICEncoder[M ENU]Encoder[M ENU][M ENU]LCDLCDVR6VR5WriteWriteWriteCheckCheckBy tuning theVR6, adjustthe modulationw ave untilif becomes thesquare w ave.4.2kHzAccording to thelarger +, –.0.5W ±0.05W0.8A or lessAll segmentsare lighted.■■■■■■■■■4 to 6 seg-ments arelighted.■■■■ ~■■■■■■±0.1kHzItem Condition M easurement Adjustment Specifications/Test equipment Unit Terminal Unit Parts M ethod RemarksLow pow er3.BatteryterminalreferencevoltageAdjust/Check4.DCSmodulationbalance5.M AX DEV8) LCD display: P13C,Frequency: 145.000M HzPTT: ON9) LCD display: P13H,Frequency: 145.995M HzPTT: ONSw itch to Adjustment modeand carry out the operationsfor adjustment item B.(Refer to page 28)TX pow er: Low1)LCD display: BATFrequency: 145.000M Hz(E, E3)Frequency: 146.000M Hz(K, K2, M , M 2)PTT: ONBattery terminal voltage: 7.5VTo exit from the AdjustmentM ode, turn the transceiverpow er OFF and then ON.2)Frequency: 145.000M Hz(E, E3)Frequency: 146.000M Hz(K, K2, M , M 2)PTT: ONBattery terminal voltage: 6.4VSw itch to Adjustment modeand carry out the operationsfor adjustment item L.(Refer to page 32)Detector: +P, –PHPF: OFF LPF: 3kHzDe-emphasis: OFFTX pow er: Low1)LCD display: DCS.BALFrequency: 145.000M Hz(E, E3)Frequency: 146.000M Hz(K, K2, M , M 2)PTT: ONTo exit from the AdjustmentM ode, turn the transceiverpow er OFF and then ON.M IC terminal inputAG: 1kHz/80mVDetector: +P, –PHPF: OFF LPF: 15kHzDe-emphasis: OFFTX pow er: LowPow er meterAm meterDC pow er supplyDVMLinear detectorOscilloscopeLinear detectorAGOscilloscopeTX-RX(A/3)TX-RX(A/3)ADJUSTM ENT(Adjust the output voltage from DC pow er supply until the voltage at thebattery terminal becomes 7.5V w hile the transceiver is transmitting.)(Adjust the output voltage from DC pow er supply until the voltage at thebattery terminal becomes 6.4V w hile the transceiver is transmitting.)