Phone Is Jammed - Nokia NSB-9 Series Troubleshooting Instructions

NSB-9
Troubleshooting Instructions

Phone is jammed

Phone
is
jammed
Measure VIO,
VCORE, FLASH1,
VANA, VR3 voltages.
Are they OK?
Yes
Measure 32.6kHz
Sleep CLK from
testpoint J404. Is it
OK?
Yes
Measure 13MHz
RFClk from R420. Is it
OK?
Yes
Measure PURX signal
from testpoint J402.Is it
high (~1.8V)?
Yes
Jammed
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Check VBATT 1-6
VIO, VCORE,
FLASH1, VANA,
VR3 lines. Are they
No
OK?
Measure 32.6kHz
No
Sleep Clk from
B200. Is it OK?
Measure 26MHz
No
RFClk from C660.
Is it OK?
No
Nokia Corporation
CCS Technical Documentation
No
BSI/BTEMP lines and
Yes
No
Yes
No
Yes
Check L260-L265
C260-C265
VBATT lines
Check BSI/BTEMP
lines. If OK and UEM
regulators are not
working. Change
UEM
Check B200, C209,
C210
Change UEM
Check R661, C661,
R660, C660 and
VR3 line. If OK,
change G660.
Check R420, C420. If
OK change N600
Change UEM
Issue 1 04/03