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AM-FM Stereo Tuner F-120D (Pioneer)

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

Fig.1 F-120D

• Pulse count detector.
• Double conversion system.
  10.7MHz-->doubler-->21.4MHz
  -->2nd Mix.-->1.26MHz-->PCD
• THD=0.009% @1kHz Stereo

Trouble	Cause	Repair
Station call buttons didn't work.	Sponges btween buttons and switches were all melted out.	Attatched elastomer sheets on the top of these switches instead of sponges.