Nokia n81 Service Manual

Also see for N81: User guide Specification sheet User guide User guide User guide

Contents

Nokia n81 Service Manual Manual pdf 100 page image

Acoustics troubleshootingIntroduction to acoustics troubleshootingAcoustics design ensures that the sound is detected correctly with a microphone and properly radiated tothe 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 readiates through a single hole on the front cover (A-cover). Thesound reproduced from the IHF speakers radiates from left and right sound holes located on both sides ofthe device. 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, caremust 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-179; RM-223Baseband TroubleshootingPage 3 –50 COMPANY CONFIDENTIAL Issue 1Copyright © 2007 Nokia. All rights reserved.