Audio Concept; Av Connector - Nokia 2700c-2 Service Manual

Audio concept

This phone has a conventional solution on earpiece and vibra. Both are handled by AVILMA N2200. Integrated
handsfree speaker is driven by an additional amplifier also handled by AVILMA. The microphone has a digital
interface and its RF-filtered lines are directly connected to RAP D2800 for processing.
This phone has an external PA N2000 for external headset directly connected to AVILMA N2200.
The Plug detector (PLUG_DET) in the AV connector enables the external microphone, when the phone function
is used.

AV connector

The AV connector is used to connect headsets both in the handsfree phone function and for using the phone
as a media player (see the audio concept heading). The six pins are used in accordance with the table below.
A connected male connector is detected on pin 6 (PLUG_DET).
Note: Only use an approved cable for connecting to the AV connector ( e.g. headset HS-125).
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Figure 28 Audio block diagram
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