Nokia 3155i Troubleshooting Manual page 33

Nokia Customer Care
• Verify communication signals
• If no signals are present: (1) check contacts on Sim connector are correct, (2)
check ESD chips are correct, and (3) check the UEMEK is correct. Replace
damaged parts if necessary.
SIM Connector
SIM ESD
Protection
ISSUE 1 07/2005
Figure 32: Commuication signals
Figure 33: Vsim check
©2005 Nokia Corporation
3155/3155i (RM-41), 3152 (RM-61)
Baseband Description and Troubleshooting
Company Confidential Page 33