User Guide

Introduction to acoustics troubleshooting

Acoustics troubleshooting

Acoustics design ensures that the sound is detected correctly with a microphone and properly radiated to

the outside of the device by speaker(s). The acoustics of the phone includes three basic systems: earpiece,

Integrated Hands Free (IHF) and microphone.

The sound reproduced from the earpiece radiates through a single hole on the front cover (A-cover). The

sound reproduced from the IHF speakers radiates through a single hole on the Antenna cap (Antenna assy).

Microphone is located at the bottom, next to the system connector.

For a correct functionality of the phone, all sound holes must be always open. When the phone is used, care

must be taken not to close any of those holes with a hand or fingers. The phone should be dry and clean,

and no objects must be located in such a way that they close any of the holes.

RM-198

BB Troubleshooting and Manual Tuning Guide Nokia Customer Care

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