Nokia 3220 Instruction De Maintenance
RH-37
6(a) - BB Troubleshooting Instructions
Nokia Customer Care
Page 12
Nokia Corporation
Issue 1 07/04
Phone is jammed 1
Measure
32.8 kHz Sleep Clk
from C2241.
Is it OK?
Yes
No
No
Yes
Yes
Phone
is
jammed
Check
VBATT1-6, VIO,
VCORE, VFLASH1,
VANA,
VR3 lines.
Are they ok?
Check L2200,
C2239,
BSI/BTEMP lines
and VBATT lines
Check BSI/BTEMP
lines. If OK UEM
regulators are not
working. Change
UEM.
Check B2200,
C2210, C2241.
Change UEM
Measure
32.8kHz
32.8kHz
Sleep Clk
from testpoint J2802.
Is it OK?
Measure
VIO, VCORE,
VFLASH1,
VANA, VR3 voltages.
Are they
OK?
Yes
No
No
See Waveform 3
See Waveform 4
Retest
Goto Part
2
Retest
Waveform 3
Waveform 4