JVC KDS71R
Instrukcja Serwisowa

KD-S73R/KD-S71R

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 Is the audio signal (including sampling output components) output to IC521 pins ^and | during YES Is the audio signal output at IC101 pins 1 and7during playback? YES Check the muting circuit.

NO

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

NO

Check the vicinity of the Q981 audio power supply.

NO

Check IC521 and its peripheral circuits

NO

Check IC101 and its peripheral circuits

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