( TF09E00J10300000000FAAT08 )
Audio System Symptom Troubleshooting - Volume does not change

Volume does not change
NOTE: Set the fader and balance positions to the center.
  1. Turn on the audio unit, and listen for sound from the speakers.
Is the sound normal?
YES -
Go to Step 2 .
NO -
  1. Operate the volume knob to see if the volume changes.
Does the volume change?
YES -
Operation is normal at this time.■
NO -