User Guide

Nokia Customer Care Troubleshooting - Baseband
6015/6015i/6016i/6019i (RH-55), 6012 (RM-20)
Issue 1 - Revision 002 09/2004 ©2004 Nokia Corporation Company Confidential Page 35
Phone is
jam med,
page 2
Phone shutdown
after 32 seconds
Read phone info.
Is it OK?
Retest
YES
YES
Measure
DBusClk 9.6 MHz
and Dbus
interface signals
at test points.
Are they OK?
Measure
FBusRxO signal
during phone
info read from
test point. Is it
OK?
Reflow or
change UEM
Measure
FBusTxO signal
during phone
info read from
test point. Is it
OK?
Reflow or
change UPP
Reflow or
change UEM
NO
NO NO
YES
NO
YES
Reflow or
change UPP
NO
YES
Can ESN be read
from the phone?
Rebuild ESN at
the security
station.
NO
YES
Measure
watchdog signal
at Cbus interface
at test points.
Are they OK?
Reflow or
change UPP and
reflash
NO
Reflow or
change UEM and
reflash
YES