Flash Programming Does Not Work - Nokia RM-11 Series Troubleshooting Manual

RM-11
Troubleshooting - Baseband

Flash Programming Does Not Work

Flash
faults
The mobile terminal
does not set
Flashbus TXD line
high after the
startup
NO
Does the mobile
terminal set
Flashbus TXD line
No
low after the line has
been high?
Yes
Flash
faults,
page 2
©2005 Nokia Corporation
Page 44
Measure BSI pulse during
Flash programming. Is it
YES
OK?
YES
Measure FBusRXO (2.78V)
signal during flash
programming from
production pattern and
FBUSRX test point (1.8V).
Is it the same?
YES
Measure test point
FBusTx (1.8V) and
production pattern signal
FBusTxO (2.78V) during
flash programming. Are
they the same?
Change
YES
UEM
Measure MBusRx (2.78V)
and MBUS (1.8V). Are they
the same?
CC Technical Documentation
Check BSI line
X100, C230,
NO
R203, R202. Is
are they OK?
YES
Reflow or
NO
change UEM
Change UPP
NO
Is there a pulse
NO
on FBusTx?
Yes
Is there a pulse
on FBusTxO?
NO
Reflow or
NO
change UEM
Confidential
Replace bad BSI
NO
line component.
Issue 2 09/2005