Ihf - Nokia 6255 Description And Troubleshooting

6255/6255i6256/6256i (RM-19)
Baseband Description and Troubleshooting

IHF

Audio
faults,
page 3
Is IHF working?
YES
Audio
faults,
page 4
Page 58
Check IHF audio
amplifier
NO
(N2100). Is it
OK?
YES
Set the phone to Local Mode. Use
Phoenix to open Troubleshooting >
Phone Control > Phone State tab >
select Local Mode > click Execute.
Then use Audio test > HP
microphone in/ Ext speaker out >
Loop ON. Measure and check IHF
test points IHFA and IHFB.
Are they OK?
YES
Change IHF speaker.
©2005 Nokia Corporation
Nokia Customer Care
NO
Replace N2100.
Check R117,
R2118, R2119. If
NO
OK, change the
Company Confidential
UEMEK.
Issue 2 05/2005