User Guide

NPL-4/5 Company confidential
Troubleshooting Instructions Nokia Customer Care
Page 80 Copyright © 2004 Nokia Corporation. All rights reserved. Issue 1 05/04
Accessory faults1
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,R102,
R109, C103. If OK
change UEMEk.
Retest.
Remove
headset
Check PopPort
connecor pin
3(ACI) and line to
systemboard,
L106,R103, R102,
R109, C103. If OK
change UEMEk.
Retest
Check C107,
C108, L103, C114,
C119, R105, R106,
R164, R165, C157
Audio fault
No No
Yes
No
Yes
No
Accessory if
fault
2
Yes