Internal Speakers - Nokia n81 Service Manual

RM-179; RM-223
System Module and User Interface
Figure 76 AVILMA output
Figure 77 Connector X3800 to Flexboard
Figure 78 Connection to earpiece on slide FPC board

Internal speakers

Internal speakers are used for Internal Handsfree (IHF) call mode, Video call, ringing tones, FM radio and
music listening.
Two dynamic speakers are connected to AVILMA's outputs Xear left and right in differential mode with a
highpassfilter (C2158/R2150 and C2159/R2151) and a stereo calss D amplifier TPA2012D2 with a fixed gain
of 12dB. Amplifier is shut down if not in use.
Page 6 –36 COMPANY CONFIDENTIAL Issue 1
Copyright © 2007 Nokia. All rights reserved.