User Guide

RH-4 Company Confidential

BB Description & Troubleshooting CCS Technical Documentation

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Audio Faults 3

Audio Faults 4

Is Ext ear working?

Is Ext-mic working

Set Phoenix LOCAL mode.

Select Maintenace ->

audio test. Set EXt in IHF/

EXT out ON.

Set Phoenix LOCAL

mode. Select Maintenace

-> audio test. Set EXt in

IHF/EXT out ON.

Change UEM

Check L103,

RC109, C111,

R105,C157,C156,C

181,C182,

X101,lines. If OK

change UEM

Check

R173,C150,C176,C

184,R158,

R171,L102,C107,C

108,X101,line. If ok

change UEM.

check

R169,R162,C170,C

166,C173, C174,

lines. If ok change

UEM

Measure DC

volts on speaker pins

of connector. Are they

~0.8VDC to GND?

Measure DC volts on

mic pins of connector.

Is it ~2.1VDC to

GND?

Yes