User Guide

CCS Technical Documentation Troubleshooting — BB
RH-48
Issue 1 11/2003 © 2003 Nokia Corporation Confidential Page 39
Phone is
jammed,
page 2
Phone shutdown
after 32 seconds
Has the phone been
flashed?
Flash the phone
Reflow or change
UPP and reflash.
Read phone info. Is
it OK?
Retest
YES NO
YES
Measure watchdog
signal at CBus
interface at test
points J406, J407,
and J408. Is it OK?
Reflow or change
UEM and reflash.
Measure DBusClk
9.6MHz and Dbus
interface signals at
test points J413,
J414, J415. OK?
Reflow or
change UPP.
Measure FBusRx
signal during phone
info read from test
point J412. Is it OK?
Measure FBusTx
signal during phone
info read from test
point J411. Is it OK?
Reflow or change
UEM.
Reflow or change
UPP.
Reflow or change
UEM.
NO
NO
YES
NO NO
YES
NO
YES
NO
YES