User Guide

NPM–9
Troubleshooting Instructions
PAMS Technical Documentation
Page 8
Issue 1 02/2002
 Nokia Corporation
Flash programming doesn’t work
Flash
faults
The Phone does
not set Flashbus TXD line
high after the startup.
Measure BSI pulse
during Flash
programming.
Is it OK ?
Yes
Check BSI line
X101, C241,
R203, C109,
R202
No
Measure FBUSTX
line during Flash
programming
from testpoint J411
Is it High (1.8V) ?
Yes
Check R102
If OK –>
Change UEM
No
Change UPP
Yes
The Phone does not set
Flashbus TXD line low after
the line has been high.
No
Yes
Change UPP
Flash faults
page 2
No