Earpiece Or External Microphone Line Does Not Work; Fig 6 Fault Tree, Earpiece Fail - Nokia NPM-2NX Troubleshooting Manual

CCS Technical Documentation

Earpiece or external microphone line does not work

Earpiece doesn't
work
Run audio-loop
selftest with
phoenix
Check R157,L152,
L158,C150,C164,
C153, C165,R152,
C156,C155,R164,
R161,R153,R150,
C159,C167,V153
Check
earpiece
Change UEM
Issue 1 07/02
Figure 6: Fault tree, earpiece fail
Feed 1KHz to Xmic
Fail
OK
OK
OK
ãNokia Corporation
OK
by JBA-8 and
measure from
earpiece
Fail
Change UPP
NPM-2NX
Troubleshooting
Page 17