Only For Training And Service Purposes - LG GD580 Service Manual

3. Technical brief
3.3.5 MIDI (Ring Tone Play)
This section provides a detailed description of the MIDI and WAV-file functions.
In Figure 3-3-6, External MIDI path is the same as Voice Loudspeaker downlink Mode, except source in
DB3150 (DSP and Audio Mixer).
MIDI : DB3150 PCM Decoder
AUDIO AMP(MAX9877)
LGE Internal Use Only
Figure 3-3-6 External MIDI path
Auxiliary audio amplifier
Speaker(8 )
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SPKRP/N Port
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Only for training and service purposes