User Guide

Figure 77 Internal earpiece circuitry

Internal speakers

Internal speakers are used for Internal HandsFree (IHF) call mode, ringing tones, FM-radio and music listening.

Dynamic 11x15 mm speaker is employed.

External earpiece

All galvanic accessories are connected to the system connector (Pop-Port™).

The accessory audio mode is automatically enabled/disabled during connection/disconnection of dedicated

phone accessories.

Xear lines have 22 Ω series resistors in each line.

Analogue switches (type TS5A3159) are in the Xear lines to attenuate the headset signal level in IHF mode,

when headset is inserted. The attenuation is about 15 dB.

Figure 78 External earpiece circuitry (Pop-Port connected on the right)

Vibra circuitry

Vibra is used for vibra-alarm function.

RM-86

Nokia Customer Care System Module

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