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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
