Power Doesn't Stay On Or The Phone Is Jammed - Nokia RH-27 Series Technical Documentation Manual

RH-27
Troubleshooting - Baseband

Power doesn't stay on or the phone is jammed

Phone is
jammed,
page 2
Phone shutdown
after 32 seconds
NO
Measure DBusClk
(9.6MHz), Data, and
EnX signals at TP13,
TP11, TP09. Is it OK?
YES
Read phone info. Is
it OK?
YES
Retest
Page 46
Has the phone been
YES
flashed?
Measure watchdog
signal Cbus from
test points TP15,
NO TP08, TP05. Is it OK?
Reflow or
change
UPP
Measure FBusRx
signal during phone
NO
info read from test
point TP03. Is it OK?
Measure FBusTx
signal during phone
info read from test
point TP05. Is it OK?
©2003 Nokia Corporation
CCS Technical Documentation
NO
YES
NO
YES
NO
YES
NO
YES
Confidential
Flash the phone
Reflow or change
UPP and re-flash
Reflow or change
UEM and re-flash
Reflow or change
UEM
Reflow or change
UPP
Reflow or change
UEM
Issue 1 11/2003