User Guide

Issue 1 12/04 COMPANY CONFIDENTIAL 51
Copyright © 2004 Nokia. All Rights Reserved.
RAE-6/RA-4
6 - Baseband Description and Troubleshooting Nokia Customer Care
■ Accessory troubleshooting
Accessory
detection doesn't
work
Does HEADINT
(R2001) toggle (high
-> low) when
accessory is
connected?
Insert the known
working accessoryt to
the system connector .
Does phone detect
headset?
Check L2000, R2002,
R2001 and C2003 and
system connector X2021
END
NO
YES
Vout
(system connector
X2021, pin#4)
~2.8V, after an ACI
accessory has been
connected?
NO Fix defect and retest.
NO
YES
YES
Fault found.
No fault found.
Fault is in non-reworkable
component. Refer to current
BER handling guidance.
Check
X2021 and L2001.
Check also that Vout is
not shorted to GND.
retest.