Flash Programming Doesn't Work - Nokia RH-27 Series Technical Documentation Manual

CCS Technical Documentation

Flash programming doesn't work

Flash
faults
Phone does not set
Flashbus TXD line
high after startup
NO
Change UEM
Does the phone set
Flashbus TXD line
low after the line has
been high?
YES
Flash
faults,
page 2
Issue 1 11/2003 Confidential
Measure BSI pulse
during Flash
YES
programming. Is it
OK?
Measure FBusRx
(2.78V) signal during
flash programming
from production
pattern and test
point TP03 (1.8V). Is
it the same?
Measure test point
FBusTx (TP05) (1.8V)
and production
pattern signal
FBusTxO (2.78V)
during flash
programming. Are
they the same?
NO
Measure MBusRx
YES (2.78V) and test
point TP01 (1.8V).
Are they the same?
©2003 Nokia Corporation
Troubleshooting - Baseband
NO
YES
NO
YES
NO
YES
NO
RH-27
Check BSI line X100,
C230, R203, R202
Reflow or change
UEM
Reflow or change
UPP
NO
Is there a pulse on
TP05?
YES
Is there a pulse on
FBusTx?
NO
Reflow or change
UEM
Reflow or change
UEM
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