This manual is very useful because it presents the technical specifications of the cd player, including the manufacturer of the reader, this helps if you need to replace it. It also displays the settings and layout of the circuit.
Text excerpt from page 10 (click to view)
ssembly of FPC(Flexible PC board) onto Roller ass'y
Turn Roller ass'y by 2 times. Hook the end of Roller ass'y to the tongue. Insert the FPC into the slit of Roller ass'y then release the end of Roller ass'y and the tongue.