Explaining the "PBC" (Playback Control) function, which allowed for primitive interactive menus—a precursor to the sophisticated DVD and Blu-ray menus of the future. Maintenance:
– Use only the supplied AC adapter (often 12V DC, center positive). Using the wrong adapter can damage the unit. Vcd 2000 Manual
inside the Vcd 2000. The manual explicitly states that the input attenuator is sealed and any solvents will destroy the precision resistors. Explaining the "PBC" (Playback Control) function