Audio Internal; Earpiece/Ringer - Nokia 2650 Service Manual

Nokia Customer Care

Audio Internal

Earpiece/Ringer

The transducer used both as earpiece and ringer is the 16 mm loudspeaker called MALT. This
solution will implement polyphonic ringing tones.
UEM
EARP
EARN
HF
HFCM
UPP
GENIO14
24
Figure 5:Earpiece/ringer interface
Interface to
external audio
1u
4k7
IN-
4k7
IN+
330p
BYPASS
470 n
SHUTDOWN
COMPANY CONFIDENTIAL
Copyright © 2005 Nokia. All Rights Reserved.
10
10
Vbat
33k
Vdd
Vo1
Vo2
GND
Placed near Placed outside
UEM BB-can, near the
connections to
MALT
RH-53/54
8-System Module
XEARP
XEARN
MALT
Interface to
DC-out
Not used / NA
Issue 2 06/2005