Compact Disc Player (CD): Testing and Inspection

CD AUTOCHANGER:

Testing magazines and discs
1. Confirm discs are installed correctly into the magazine (not upside down).
2. Visually inspect/compare the customer's discs with each other and other discs.
Identify any of the following conditions:
^ Discs with a large outside diameter. [Normal size is 120 mm (4.72 in).]
^ Discs with rough or lipped edges.
^ Discs with excessive thickness [Normal size is 1.2 mm (0.047 in).]
^ Discs with scratches, abrasions, or pits on the surface.
^ Discs with grease/oil, fingerprints, foreign material.
^ Discs are warped due to excessive heat exposure.
3. Slide/place the discs in and out of the various magazine positions.
Identify any discs and/or positions that require additional force for placement/ejection. If interference (sticking, excessive tensions) is found, replace the magazine or the discs.

NOTE
^ Discs which are marginally out of specification (ex. dirty, scratched and so on) may play correctly on a home stereo.
However, when used in the automotive environment skipping may occur due to the added vehicle movement and/or vibration due to road conditions. Autochangers should not be replaced when discs are at fault.
^ Use a soft damp cloth to wipe the discs starting from the center outward in radial direction. Never use chemical cleaning solutions to clean the discs.