Abstract: A positioning assembly includes a first connecting rod with a threaded end section, a second connecting rod with a threaded end section, an adjusting member having two opposite threaded ends that threadedly engage the threaded end sections of the first and second connecting rods and an intermediate section extending between the threaded ends, and a restricting member mounted on one of the first and second connecting rods and releasably engageable with the intermediate section when said one of the first and second connecting rods rotates relative to the adjusting member in a loosening direction, thereby preventing further rotation of said one of the first and second connecting rods relative to the adjusting member.

Abstract: The present invention relates to a method for raising the success rate for compact disc (CD) recording. The method includes (1) obtaining a set of parameters of the type of CD, the set of parameters are fed to the CD burner for the recording setting, and (2) adding the set of parameters to the CD burner for future recording. With present invention, the CD burner can be used to record on CDs from different suppliers for quality results.