User Guide

Internal earpiece

Internal earpiece is used for the HandPortable (HP) call mode. A dynamic 8mm earpiece capsule is connected

to EM ASIC’s (N2200) differential output EarP and EarN.

Note: The RM-198 can be assembled with or without the HAC (Hearing Aid Coil).

Figure 61 Internal earpiece circuitry

Internal speakers

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

The dynamic 11x15mm speaker is connected to Retu ASIC’s outputs HFSp P/N.

Figure 62 Internal speaker circuitry

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 10 Ω series resistors in each line.

RM-198

Nokia Customer Care System Module

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