Audio System Symptom Troubleshooting - CD skips

CD skips Insert the disk to see if the symptom can be duplicated. Is it duplicated?
YES | - | Go to Step 2 .
NO | - | Operation is normal.■
Check the disc for contamination, scratches or other damages. Is there contamination or any damages?
YES | - | Go to Step 4 .
NO | - | Go to Step 3 .
Check the system that it occurs. Does the symptom only occur or rough roads?
YES | - | Compare to a similar vehicle under the same conditions.■
NO | - | Replace the audio unit.■
Try a known-good disc. Does the symptom recur?
YES | - | Replace the audio unit.■
NO | - | The disc is faulty.■