Kenwood TS-950S Service Manual

Also see for TS-950S Digital: Instruction manual Instruction manual Instruction manual Instruction manual Service manual

TS-950S/SDDESCRIPTION OF COMPONENTSComponents Use/Function Operation/Condition/CompatibilityIC13PLLO(MAINLO2}|2,3,4:Dividedratiosettinginput.5:10MHzinput.7:LOCKvoitageoutout.i|8:UNLOCKoutput,whenunlocked""H'"".12:64.22MHzinput.iCi4|AVA10V{intheAFunit),ee1C15 AVR 5V {in the AF unit). aa aQi AFT amplifier 80kHz + SOkHz.Q2 Switching On when DSP installed.Q3 Switching | On in FSK or SSB mode.Q4 Switching { On in AF VBT operationas Switching On in CW made.Qs Muting On when no sidetone output.Q7 Muting On when insert a key plug into jack.Q8 Muting On in transmit, MABK and SQ mode (MAIN mute).ag Muting On in transmit, SABK and SQ mode (SUB mute).Qi0 AF amplifier MAIN REC OUT.Qu AF amplifier SUB REC OUT.Qi2 Muting When power switch is turned on or off, mute in TX/RX.a3 Switching On for instant when power switch is turned on.Qi4 Switching On in CW and FSK mode.Q15 AF amplifier For sub-toneQ16 Muting On in receive mode (Muted to FM MOD line when receive mode).Q17,18 Switching On in FM NARROW mode.aig Switching On in FM modeQ20 AF amplifier FM MIC signal.Q21 Switching On in FM mode.022 Switching On in FM mode.Q23 Switching On in FM mode.Q24 Switching VCO select (10kHz~7.5MHz : on).Q25 Switching VCO select (7.5MHz~14.5MHz : on).Q26 Switching VCO select (14.5MHz~21.5MHz : on).Q27 Switching VCO select (21.5MHz~30MHz : on).Q28 Switching UNLOCK detection (PLLO, 1).Q29-31 PLL1 low-pass filter Active filter (Reference frequency 500kHz).Q32 VCO1 output amplifier 73.08MHz~103.05MH?2033 MIX1 input buffer 73,06~103.05MHz.034,35 MIX1 output buffer 38MHz~68MHz.Q36 MIX1 input buffer 35.085MHz~35.55MHz (MAIN LO7).Q37 MAIN LO1 output buffer 73.06Mtiz~103.05MHz,Q38 REF buffer 10MHz (Reference of PLL, IC).Q39 MAIN LO2 output buffer 64.22MHz.Q40 Buffer 8.83MHz for MAIN NB.041,42 Amplifier 8.83MHz for MAIN NB.Q43 AGC amplifier | 8.83MHz for MAIN NB.Q44 Amplifier 8.83MHz for MAIN NB.Q45 Buffer MAIN NB1.Q46 Switching MAIN NB2.047,48 Switching MAIN NB1,Q49 Switching MAIN NB2. 7Qs0 Switching On in MONITOR operation. _Q51 Switching On in CW mode (CWB). +5Q52Switching OninCWmode.eb71