LG KT520 Service Manual page 62

3.3.6 MP3 (Audio Player)
This section provides a detailed description of the MP3 file functions.
MP3 function supports PCM 44/48KHz sampling rate.The PCM44/48 RX-path is intended to be used
as a audio amp and one speaker.
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Only for training and service purposes
Figure 3-3-7. MP3 Scheme
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3. TECHNICAL BRIEF
LGE Internal Use Only