User Guide

RAE-6/RA-4
Nokia Customer Care 6 - Baseband Description and Troubleshooting
42 COMPANY CONFIDENTIAL Issue 1 12/04
Copyright © 2004 Nokia. All Rights Reserved.
■ IR troubleshooting
Phone is in
flash jig, or
powered from
battery
Try IR connection
to pc
No
Yes ok
Look with a camera
phone viewfinder to
phones IR window
No
Try to send a
contact with
phones IR
I can see blinking light
Try again in module jig Yes
Change IR
window
IR module N4490
seems to be properly
soldered?
No
Yes
Reflash the
phone
All ok
Check if pulses can be
seen during transmission
at pins 3 and 4
Change IR
module
OMAP FAULT?
Fault is in non-
reworkable
component. Refer
to current BER
handling guidance.
Yes
Inspect R4490,
C4490 and
C4492
One is pulsing,
another is not
No
Reflash the
phone, OK
now?
No