Phone Is Totally Dead - Nokia RH-27 Series Technical Documentation Manual

RH-27
Troubleshooting - Baseband

Phone is totally dead

Phone is
dead
Phone current is
zero or too high?
NO
Phone current is
<=30 mA
NO
Phone current is
35 mA
YES
Is phone in Local
Mode?
YES
OK restart
Page 42
YES
YES
programming OK?
NO
Check BSI line X100,
R202, R203, C230.
NO
©2003 Nokia Corporation
CCS Technical Documentation
If current is zero, check X100 solder and make
sure Vbatt connector makes contact.
If current is too high, check for shorts.
Make sure all BB regulators are at their
respective voltage levels (VANA, VIO, VCORE,
VFlash1, and VR3). See phone's top view
diagram for test points.
Make sure the System Clk is 19.2MHz and that
the Sleep Clk is 32KHz
Make sure PURX and SleepX signals are high
(1.8V)
Is phone flash
NO
YES
Are they OK?
NO
Confidential
Phone is
YES
jammed
Flash
faults
Change UEM
Repair
Issue 1 11/2003