Nokia RH-6 Series Baseband Description & Troubleshooting page 59

Company Confidential RH-6
CCS Technical Documentation 6 - BB Description & Troubleshooting
Earpiece 2
Connect EXT audio
signal 1kHz (Sine
200m Vpp) to
XMICP pads and
Ground on XMICN
Measure sine signal Measure sine
Yes
No
from earpiece pads. Is signal at UEM(R172) Change UEM
it ~320m Vpp? is it ~200m Vpp?
Yes
No
Check R169, R162,
Change UPP C170, C166, C174,
C173 and lines.
Retest
© 2003 Nokia Corporation.
Issue 1 10/2003 Page 59