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AM-FM Stereo Tuner KT-1100 (TRIO-Kenwood)

[Outline] [Front view] [Inside view] [Trouble-shoots]

Fig.1 Front view

• FM 5-gang AM 3-gang front end
• Pulse Count Detector
• Sample & Hold MPX
• THD = 0.04% @1kHz Stereo
• Double convert circuit on FM band
  ( 1st. IF=10.7MHz , 2nd IF=1.96MHz )
• Linear frequency scale on AM band
• IF band width selector on FM & AM band
• Muting level control on FM & AM band
• Tuning meter for FM & AM band
• 73,800yen in 1982

Trouble	Cause	Repair
No audio signal output on FM band.	No oscillation signal at 2nd local oscillator for 10.7MHz to 1.96MHz down converter.	Replace a capacitor at the LC tunk circuit of 2nd local oscillator.
Can't demodulate stereo signal.	Unlock VCO for stereo demodulator.	Adjust VCO free-run frequency trimmer.