User Guide

Nokia Customer Care Baseband Description and Troubleshooting
6255/6255i6256/6256i (RM-19)
Issue 2 05/2005 ©2005 Nokia Corporation Company Confidential Page 67
If no device is detected, proceed as follows:
USB faults
Check continuity
between system
connector pin 5 and
R1053
Check continuity
between system
connector pin 6 and
R1054
Check continuity
between system
connector pin 7 and
R1055
YES
NO
YES
NO
YES
Replace system
connector
Check continuity
between system
connector pin 8 and
phone ground
Replace system
connector
Replace system
connector
Replace system
connector
NO
NO
Yes
USB faults
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