User Guide

NPL-4/5 Company confidential
Troubleshooting Instructions Nokia Customer Care
Page 84 Copyright © 2004 Nokia Corporation. All rights reserved. Issue 1 05/04
Flashlight faults
Flashlight
faults
Are flashlight
(LED) turned on ?
Measure
voltage over C304.
Is it typ. 9.1V ?
Measure
voltage V317/3 .Is it
typ. 5.0V ?
Set phone to LOCAL mode. Set
VBATT to 4.2V. Start Display
test with Phoenix.
Set "Flashlight" ON
Check lines of
CALLED1 and
CALLED2. If lines are
OK change UEMEk
C302,C303,L300,V30
0, R310, R302,R300,
C304.
If OK change N300
Check V320, V317,
R315, R316, R318
Check CALLED1 (N300/8
and CALLED2 (V320/IN).Are
they HIGH ?
No
Change V318 and/or
R318
Yes
No
Yes
No
Display faults
2
Yes
Yes