User Guide

CCS Technical Documentation Troubleshooting Instructions

NSB-9

Issue 1 04/03 Nokia Corporation Page 65

Check C174,

C179, C178, R163

and XAUDIO(7)

line. Are they OK?

IHF 2

Measure

differential sine

signal from IHF

speaker pads

J150, J151. Is it

~810mVpp?

Retest

Yes

Use Phoenix “Audio Routing and

Test Signals” test. Use internal

sine wave generator and set

signal frequency to 1kHz and

peak level to 4000 Hex

Change defect

part and retest

Change UEM

and retest

Yes