Nokia 3105 Servicehandbuch
CCS Technical Documentation
Troubleshooting — BB
RH-48
Issue 1 11/2003
© 2003 Nokia Corporation Confidential
Page 35
Phone is totally dead
Phone is
dead
Phone current is
zero or too high?
Phone current is
<=30 mA
Phone current is
35 mA
Is phone in Local
Mode?
Change UEM
Repair
OK restart
Check BSI line X103,
R202, R206, C100,
C111, C240. Are they
OK?
Phone is
jammed
Flash
faults
¾ If current is zero, check X103 and make sure
Vbatt connector makes contact.
¾ If current is too high, check for shorts.
¾ 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.
VFlash1, and VR3). See phone's top view
diagram for test points.
¾ Make sure the System Clk is 19.2MHz and that
the Sleep Clk is 32KHz
¾ Make sure PURX and SleepX signals are high
(1.8V)
YES
NO
YES
YES
NO
NO
NO
YES
NO
YES
YES
NO
Is phone flash
programming OK?