Kenwood TK-80 Service Manual
Also see for TK-80: Service manual
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Contents
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TK-8049Item ConditionMeasurement AdjustmentSpecifications/RemarksTest-equipment Unit Terminal PartsUnit MethodADJUSTMENTPLL and CAR Section1. Reference 1) M CH: 01 f. counter TX-RX TP501 TX-RX TC501 20.00000MHz ± 20Hzfrequency (probeadjustment 10 : 1)2. 62.35MHz 1) M CH: 01 TP506 TC502 62.35000MHz ± 20Hzadjustment3. 10.695MHz 1) M CH: 01 Oscilloscope TP503 L539 1.4Vp-p ± 0.2Vp-padjustment4. 54MHz BPF 1) M CH: 01 TP505 L513 Repeat adjustment 1.0Vp-p or moreadjustment L514 2 to 3 times as theL515 level of 26.5MHz.Level maximum5. VCO1 1) M CH: 02 D.V.M TP504 TX-RX TC503 2.0V ± 0.1Vlock voltagecheck 2) M CH: 03 Check 7.0V or less6. VCO2 1) M CH: 04 TX-RX TC504 2.0V ± 0.1Vlock voltagecheck 2) M CH: 05 Check 7.0V or less7. VCO3 1) M CH: 06 TX-RX TC505 2.0V ± 0.1Vlock voltagecheck 2) M CH: 07 Check 7.0V or less8. LO1 1) M CH: 08 RF V.M CN501 Level check –0.5~+5.0dBmlevel check Pull out CN501 (LO1). 50ΩInsert CN501 after the check. terminated9. LO2 1) M CH: 08 CN502 TX-RX (L531) Level check 0~+3.0dBm(62.35MHz) Pull out CN502 (LO2). 0dBm or less:level check Insert CN502 after the check. Maximum for L531Item ConditionMeasurement AdjustmentSpecifications/RemarksTest-equipment Unit Terminal PartsUnit MethodReceiver Section1. AGC 1) M CH: 08 D.V.M TX-RX TP2 TX-RX VR6 2.9V ± 0.03Vadjustment2. MCF 1) Pull out CN502 (LO2). Spectrum CN7 L38 Repeat adjustmentadjustment M CH: 08 analyzer L42 2 to 3 times to obtainSpectrum analyzer setting L43 a maximum gain.TG level: –30dBm Tracking CN4 Adjust the waveformCenter f.: 73.045MHz generator as shown to theFrequency span: 70kHz right.ATT: 10dBV. REF: 2dB/DIVInsert CN502 after the check.73.045 73.05273.038(MHz) |
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