User Guide

CCS Technical Documentation Troubleshooting — BB
RH-48
Issue 1 11/2003 © 2003 Nokia Corporation Confidential Page 43
Audio
faults,
page 3
Audio
faults,
page 4
Is internal handsfree
speaker (IHF)
working?
Select a ring tone
and measure signals
at L150 and L151. Is
signal OK?
Change B301
Measure GenIO28. Is
it OK (1.8V)?
Check N150, R154,
C165, C155, C164,
R157, C168, C167,
R156. Are they OK?
Repair
Change the UEM
NO YES
NO
YES
YES
Change UPP
NO
YES
NO