Connect an oscilloscope to the RF or "EFM" test point on the player’s main board.
Navigate to the "Video" menu. Select SMPTE Color Bars . sony dvd test disc
The resulting waveform on the oscilloscope looks like a series of overlapping diamond shapes—the "Eye Pattern." Connect an oscilloscope to the RF or "EFM"
A detailed report using a Sony test disc typically includes several technical benchmarks: Signal Quality sony dvd test disc
You might be thinking, "Can't I just download test patterns from YouTube?"