Kenwood TS-990S Service Manual

Also see for SP-990: Instruction manual

Contents

TS-990S168ADJUSTMENTReceiver SectionItem ConditionMeasurement AdjustmentSpecifications/RemarksTest-equipment Unit Terminal Unit Parts Method• Perform the following in the adjustment mode. Item 7, 8, 9, 11, 12, 13 and 22~60.To terminate the adjustment menu in the middle, save your settings with Menu No. 128.*1: Do the following preparation prior to the 8.248MHz trap adjustment of the item 1 and adjustments of the item 2~5;• Remove the Preselector unit from the RX unit.• Connect CN26 and CN53 using a coaxial cable (E37-1571-15)1. MAIN RXTrap fre-quency• 1MHz1) Main display f.:14.200000MHzMode: USBP.AMP: ONSpectrum analyzer settingStart Frequency: 0MHzStop Frequency: 2MHzTG level: 0dBmDisconnect the cable fromCN1 and connect the track-ing generator output to CN1.Disconnect the cable fromCN11 and connect the spec-trum analyzer input to CN1.TrackinggeneratorSpectrumanalyzerRX(A/2)CN1CN11RX(A/2)L9 Adjust the coil to geta null point at 1MHzas shown. 1.00MHz• 11.7MHz 2) Main display f.:14.200000MHzMode: USBP.AMP: ONSpectrum analyzer settingCenter Frequency: 11.7MHzFrequency span: 2MHzTG level: -10dBmL8 Adjust the coil toget a null point at11.7MHz as shown. 11.700MHz• 15.501MHz 3) Main display f.:14.200000MHzMode: USBP.AMP: ONSpectrum analyzer settingCenter Frequency:15.501MHzFrequency span: 2MHzTG level: -10dBmAfter the adjustment, discon-nect the cable from CN11,and connect the originalcable.L7 Adjust the coil toget a null pointat 15.501MHz asshown. 15.501MHz• 8.248MHz(adjustment1) *14) Main fi splay f.: 7.200000MHzMode: USBP.AMP: ONSpectrum analyzer settingCenter f.: 8.248MHzFrequency span: 1MHzTG level: 0dBmDisconnect the cable fromCN93 and connect the spec-trum analyzer input to CN93.CN1CN93TC1TC2Adjust each trimmerto get a null point at8.248MHz as shown. 8.248MHz