A CD player wiring diagram shows the components of the electrical system and how they are interconnected. It is useful for troubleshooting and repairing electronic equipment. The diagram may show the location of fuses, resistors, capacitors, and other components.

The wiring diagram may also include a schematic diagram of the electrical circuit. A schematic diagram shows the electrical circuit in a simplified form, with the components represented by symbols.

The symbols used in a schematic diagram are usually standard electrical symbols. Some of the most common symbols are shown in the following diagram.

resistor 

capacitor 

inductor 

transistor 

diode 

light bulb …