To help you with your Sony DVD test disc needs, let me know: Are you using a or a PlayStation 2 ? What is the specific model number ?

A Sony DVD test disc is a specialized maintenance tool used primarily by service technicians to calibrate, troubleshoot, and verify the performance of DVD players and drives. Unlike standard movie DVDs, these discs contain precise technical signals and patterns designed for equipment analysis. Purpose and Functionality

Unlike a standard movie disc, a Sony DVD test disc is a standards-based, non-encrypted tool packed with diagnostic patterns, video test signals, and audio data designed to benchmark and calibrate DVD-ROM or DVD-Video players. What is a Sony DVD Test Disc?