User Guide

NPL-4/5 Company confidential
Troubleshooting Instructions Nokia Customer Care
Page 82 Copyright © 2004 Nokia Corporation. All rights reserved. Issue 1 05/04
Accessory faults 2
Accesory if
faults
ACI
accessory detected
and working?
Measure Vout
levelPopPort connector
pin 4.
Is it ~2.8V
Ref. picture
below. Is the start up
sequency like it ?
Audio OK ?
Insert stereo
headset
(HDS-3)
Wait 5s
Check PopPort
connecor pin
4(Vout)) and line to
systemboard, L107,
C112, R103 and
C290.
If ok change
UEMEk.
Retest
Reinsert
headset
Check PopPort
connecor pin 3 (ACI)
and line to
systemboard,
L106,R103, R102,
R109, C103. If OK
change UEMEk.
Retest.
Check C107, C108,
C109, C117, L103,
L104, C113, C114,
C118, C119, R105,
R106, R107, R108,
R164,R165, R166,
R167, C157, C158
Audio fault
No
No
Yes
No
Yes
No
END
Yes