Sim Card Faults - Nokia NPL-4 Series Troubleshooting Instructions

NPL-4/5/RM-104
Troubleshooting Instructions

SIM card faults

SIM card
faults
Insert SIM card faults
No
END
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Set phone to
Yes LOCAL mode.
Check X386
Measure VSIM
voltage from X386.
Is it 3V (1.8V)
Check SIM
power up sequency.
Change UPP
No
Is it OK ?
Yes
No
Yes
No
Is it OK ?
Yes
Nokia Customer Care
Check BSI line, X100,
C100, R203, C220,
R206.
If OK change UEMEk
Check VSIM
line,X386,
C203,C390,C391.
If OK change R388.
If still wrong VSIM
change UEMEk.
Check SIM lines
C392, R389. If OK
change R388. If still
fail change UEMEk.
Issue 2 05/05