User Guide

Troubleshooting Instructions CCS Technical Documentation
Page 42 ãNokia Corporation. Issue 1 01/03
Accesory if
faults
Non-ACI
accessory detected and
working?
Check ACI line
trans.HIGH to LOW
(<0.6V) ?
Check ACI line
trans. LOW to HIGH. Is
it OK ?
Audio OK ?
Insert mono
headset
(HDB-4)
Check PopPort
connecor pin
3(ACI) and line to
systemboard,
L106,R103, R109,
C103. If OK
change UEM.
Retest.
Remove
headset
Check PopPort
connecor pin
3(ACI) and line to
systemboard,
L106,R103, R109,
C103. If OK
change UEM.
Retest
Check C107,
C108, L103, C114,
C119, R105, R106,
R164, R165, C157
Audio fault
3
No No
Yes
No
Yes
No
Accessory if
fault
2