Portuguese PDF of 70.8 KB on audio in LCD televisions, a short technical note rather than a model-specific service diagram, with no brand or chassis named. It likely explains how the sound stage of an LCD TV is organised, covering the audio amplifier, its supply and the signal path from the main processor to the speakers. Use it as background when diagnosing no-sound faults: check amplifier supply voltage, mute line and speaker outputs, then consult the proper schematic of the set for exact parts.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @oficinacomputadores. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.