Kenwood TS-480HX Operation Manual - Page 93

Kenwood TS-480HX Manual

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16 TROUBLESHOOTING Problem Probable Cause Corrective Action Page Ref. No signals are received or receive sensitivity seems poor. 1 The SQL control is fully clockwise. 2 The Attenuator function is ON. 3 Mic [PTT] is pressed. 4 The IF filter bandwidth was incorrectly set. 5 The wrong antenna connector (ANT 1 or ANT 2) was selected. 6 The preamplifier is OFF. 1 Turn the SQL control counterclockwise. 19 2 Press [ATT/PRE/ ANT1/2] until "ATT" 61 and "PRE" disappear. 3 Release Mic [PTT]. 20 4 Review "DSP FILTERS", "CHANGING 45, THE IF FILTER BANDWIDTH" and set 46 the controls accordingly. 5 Press [ATT/PRE/ ANT1/2] (1 s) to select the other antenna connector. 60 6 Press [ATT/PRE/ ANT1/2] to switch the function ON. 49 No signals are received or receive sensitivity seems poor; S-meter is reading full scale. The RF gain was set too low. Press [MIC/ 5/ RF.G] (1 s) and turn the 18 MULTI control clockwise to increase the RF gain. Received signals are totally unintelligible. The wrong modulation mode was selected. Press [MODE] or [MODE] (1 s) to select 19 the correct modulation mode. Memory Scan will 1 The SQL control was not set 1 Adjust the SQL control to just eliminate 19 not start scanning. correctly. background noise. 2 Less than 2 memory channels were 2 Unlock at least 2 memory channels. 54 unlocked. 3 Less than 2 memory channels were 3 Store data in at least 2 memory 50 programmed. channels. Memory Scan will With Group Scan selected, the channel Select the Memory Group that contains 59 not scan one of the you want to scan is in a different group. the memory channel you want to scan. stored channels; the desired channel is NOT locked out. Program Scan will The start and end frequencies are not start scanning. identical. Store different start and end frequencies. 53 AT does not finish The impedance of the coaxial cable and Adjust the antenna system to lower the 60 successfully antenna was not matched. SWR. (TS-480SAT or Tuning does not successfully finish TS-480HX with depending on conditions although the AT-300). SWR meter indicates smaller than 3:1. The internal tuner is The SWR of the antenna system is too Adjust the antenna system to lower the 60 bypassed high. SWR. immediately after tuning is started. You cannot transmit 1 The microphone plug was not 1 Turn OFF the power, ensure the MIC 6 even though you inserted completely into the MIC connector has no foreign objects in it, press Mic [PTT] or connector. then plug in the connector firmly. transmissions result 2 The Transmit Inhibit function is ON. 2 Change Menu No. 55 to OFF. 38 in no contacts. 3 CW or FSK was selected instead of 3 Press [MODE] to select a voice mode. 19 a voice mode. 4 The DSP TX filter bandwidth was 4 Adjust the settings in Menu No. 20. 38 inproperly selected. 5 The wrong antenna connector 5 Press [ATT/PRE/ ANT1/2] (1 s) to 60 (ANT 1 or ANT 2) was selected. select the other antenna connector. 85

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