Audio And Visual System - Sound Quality Is Bad Only When Cd Is Played (Volume Is Too Low) Replace the CD with another one and recheck.
Audio And Visual System - Pressing Power Switch Does Not Turn On System Check that conditions in the cabin are not likely to cause condensation.
Audio And Visual System - Noise Occurs Check in which direction the noise comes from (front left or right, or rear left or right).
Dtc 63-7D Disc Cannot Be Played Insert a disc with a playable file and check if the disc can be played correctly.