Kenwood TK-7160 Service Manual

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TK-716031Receiver Section1. Seisitivity 1) CH : RX low (Wide/Narrow) SSG ANT Check SINADCH : RX center (Wide/Narrow) Oscilloscope EXT. SP : 12dB or higherCH : RX high (Wide/Narrow) AF V.M2) SSG output Distortion meter: –118dBm (0.28μV) (Wide): –116dBm (0.35μV) (Narrow)Mod : 1kHzDev : ± 3.0kHz (Wide)Dev : ± 1.5kHz (Narrow)2. Squelch 9 1) CH : RX low (Wide) PC key Adjust to open the squelchCH : RX center (Wide/Narrow)CH : RX high (Wide)2) SSG output: 12dB SINAD+7dBMod : 1kHzDev : ± 3.0kHz (Wide)Dev : ± 1.5kHz (Narrow)3. Squelch 1 1) CH : RX low (Wide)CH : RX center (Wide/Narrow)CH : RX high (Wide)2) SSG output: 12dB SINAD+2dBMod : 1kHzDev : ± 3.0kHz (Wide)Dev : ± 1.5kHz (Narrow)Item Condition Test equipment Terminal Parts MethodSpecifications/RemarksMeasurement AdjustmentADJUSTMENTTransmitter Section1. Frequency 1) CH : TX center Frequency counter ANT PC key Adjust to center frequency Within ± 100Hz2) Transmit2. Maximum 1) CH : TX high Power meter VR1 28W ± 1Wpower 2) TransmitlimittingItem Condition Test equipment Terminal Parts MethodSpecifications/RemarksMeasurement Adjustment4. RF 1) CH : RX center (Wide) Tra generator ANT PC key Adjust the BPF waveformbandpass CH : RX low (Wide) Spectrum analyzer BPF to Fig. 1filter CH : RX high (Wide)2) Tra generator output : –30dBmConnect the spectrum analyzerto BPF terminal* Adjustment of TX VCO lock voltage1. Remove R517, F501, R519 and R526 (all on component side).2. Remove PCB from chassis.3. Transmit and check voltage at [CV] point.Warning : Do not transmit if step “1.” is not complete.4. Adjust of voltage can be done by tuning TC442.Item Condition Test equipment Terminal Parts MethodSpecifications/RemarksMeasurement Adjustment