Nokia RH-41 Series Troubleshooting Instructions page 15

RH-41
CCS Technical Documentation Troubleshooting Instructions
Microphone or XEAR line does not work
Mic rophone does n't
work
F eed 1K Hz to MIC by
R un audio loop s elf-
J B A -8 and meas ure
F ail
tes t with P hoenix
from XE A R
OK
OK
C hec k R 156, C 151,
F ail
C 152, C 157, L 164
OK
C hec k mic rophone
C hange UP P
C hange UE M
Figure 5: Fault tree, microphone failure
Nokia Corporation
Issue 2 09/2003 Confidential Page 15