User Guide

PAMS Technical Documentation Disassembly and Troubleshooting
TME-3
Issue 3 10/03 Nokia Corporation. Page 37
SIM card fault
Figure 32: SIM card fault
SIM card
Insert SIM card
faults
Set phone LOCAL mode
Is it OK ?
Yes
Check BSI line
X101, C241,
R203, C109,
R202.
If OK ->
Change UEM
No
Measure VSIM voltge
from X386
Is it 3V ?
Check VSIM line,X386,
C203, C389.
If OK -> Change R388.
If still wrong VSIM
voltage -> Change UEM
No
Check SIM
power UP sequency
(Page 35 figure 19)
Is it OK ?
Yes
Check SIM lines.
If OK -> Change R388.
If still fail -> Change UEM
No
Change UPP
Yes
END
No
Check X386
Yes