Audio System Symptom Troubleshooting - Audio sound is weak or distorted

Audio sound is weak or distorted
NOTE: Set the fader and balance position to the center.
  1. Check to see if the problem occurs regardless of discs.
Does it occur?
YES -
Go to Step 2 .
NO -
Disc failure.■
  1. Check the speakers for any damage.
Is there any damage?
YES -
Substitute the speakers and recheck.■
NO -
Faulty audio unit.■