Single Sim Card Troubleshooting - Nokia RM-761 Service Manual

RM-761; RM-799; RM-800
BB Troubleshooting and Manual Tuning Guide
Figure 12 No charging current

Single SIM card troubleshooting

Cannot identify SIM card
The hardware of the SIM interface from XGOLD213 (D3100) to the SIM connector (X2750) can be tested without
a SIM card. When the phone is switched on, the phone first checks for a 1.8V SIM card, and then for a 3V SIM
card. The phone will try this several times, where after it will display "Insert SIM card".
Figure 13 Cannot identify SIM card
Issue 1 COMPANY CONFIDENTIAL Page 3 – 15
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