BE–104 BODY ELECTRICAL SYSTEM – AUDIO SYSTEM 21 CD Player SOUND JUMPS Does sound jump only during strong vibration? Yes → Jumping caused by vibration. No Is CD player properly installed? No → Install properly. Yes Functions OK if different CD installed? Yes → CD faulty. No Has sudden temperature change occurred inside cabin? Yes → Formation of condensation due to temp. change. No CD player faulty. 22 CD Player SOUND QUALITY POOR (VOLUME FAINT) Functions OK if different CD installed? Yes → CD faulty. No Is radio operating normally? Yes → CD player faulty. No Is speaker properly installed? No → Install properly. Yes Temporarily install another speaker. Functions OK? Yes → Speaker faulty. No Radio assembly or CD player or power amplifier faulty.