JVC KDS597
Manual de Servicio

3.2.5 Signal processing section

Is the sound output from both channels (L, R)? YES Normal

NO

No sound from either channel. YES Is 9V present at IC101 pin (8)? YES

NO

Compare the L-ch and R-ch to locate the defective point. YES

NO

Check the vicinity of the Q981 audio power supply.

Is the audio signal (including sampling output NO components) output to IC801 pins 39 and 40 during playback YES Is the audio signal output at IC301 pins 1 and 32during playback? YES Check the muting circuit. NO

Check IC801 and its peripheral circuits

Check IC301 and its peripheral circuits

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