User Guide

Figure 5 Troubleshooting when the "Contact Service" message is seen

The phone does not register to the networks, or the phone can not make a call

If the phone doesn't register to the network, the fault can be in either BB or RF. Only few signals can be tested

since several signals is 'buried' in one or more of the inner layers of the PWB.

First of all check that SIM LOCK is not causing the error by using a Test-SIM card and connect the phone to a tester.

RH-70

Baseband troubleshooting Nokia Customer Care

9243364 (Issue 1, Part 2) Company Confidential Page 1–11