Nokia 6220 Service Manual
RH-20
Company confidential
CCS Technical Documentation
Page 42
Nokia Corporation.
Issue 1 10/2003
SIM card fault (Insert SIM / Card rejected)
Figure 7: SIM card troubleshooting
Start
Insert SIMor
Card rejected
fault?
Set phone to LOCAL
mode. Is it OK?
Measure VSIM voltage
from X386. Is it ~3.0V?
Check VSIM-line
(X386,C390,R386,C203).
If OK, change R388.
If still fail, change UEM.
Yes
End
No
Yes
Check BSI-line including
X100,C100,C240,R202 and
R206. If OK, change UEM.
No
Change UPP
Check SIM power-up
sequence. Is it OK?
Yes
Check SIM lines (X386). If
OK, change R388. If still fail,
change UEM.
No
Yes
No