User Guide

NSB-5
Troubleshooting Instructions PAMS Technical Documentation
Page 18 Nokia Mobile Phones Ltd. Issue 1 03/01
Figure 12: Fault Finding for “Insert SIM Card” Error
Insert SIM card fault
Voltage < 1.5V on top of
R123 when BSI resistor is
connected
Check X102, R115, R123,
C119
No
Yes
VSIM (C143), DATAO (C131),
SIMRSTO (C130) and SIMCLKO
(C129) lines rise up to 5V after power
on
Check X100, R120
Yes
SIMPWR (J318), DATAA (J303),
SIMRSTA (J315), SIMCLK (J316),
SIMIOC (J317) rise to 2.8V after power
on
No
Faulty PCB, N100
Yes
Faulty D300
No