User Guide

Troubleshooting Instructions CCS Technical Documentation
Page 26 ãNokia Corporation. Issue 1 01/03
Check X260-265,
C260-265, BSI/BTEMP
lines and VBATT lines
Phone is jammed
Measure VIO, VCORE,
VFLASH1, VANA,
VR3 voltages.
Are they OK ?
Measure 32kHz
SleepClk from testpoint J404.
Is it OK ?
Measure 26MHz
RFClk from R420.
Is it OK ?
Measure PURX signal
from testpoint J402.
Is it HIGH (1.8V) ?
Measure 26MHz
RFCLK from C660.
Is it OK ?
Measure 32kHz
SleepClkfrom B200.
Is it OK ?
Check VBATT1-6
VIO,VCORE,VFLASH1,VANA,
VR3 lines.
Are they OK ?
Phone is
jammed
2
Check BSI/BTEMP
lines. If OK, change
UEM
Check B200,C209,
C210
Change UEM
Check C576,
R520,C540.
If OK change G501
Check R420, C420.
If OK change N500
Change UEM
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes