User Guide

Nokia Customer Care Troubleshooting - Baseband
6015/6015i/6016i/6019i (RH-55), 6012 (RM-20)
Issue 1 - Revision 002 09/2004 ©2004 Nokia Corporation Company Confidential Page 27
GPS Module (6015i/6016i/6019i)
The GPS circuitry utilizes RF signals from satellites stationed in geosynchronous orbit to
determine longitude and latitude of the handset. The GPS circuitry is completely separate
of the CE circuitry and is located almost exclusively on the secondary side of the PWB
underneath the display module.
Figure 17: GPS block diagram
To troubleshoot the GPS BB:
1. Perform a visual inspection on the GPS circuitry to see if the problem is physical
(dislodged parts, corrosion, poor solder joints, etc.).
2. Put the GE and CE in the proper mode.
3. Check to make sure that necessary inputs from the CE are good (power, clock,
etc.).
4. Ensure that the inputs produce the proper outputs. Because of the large level of
integration (most functionality is contained in the two ASIC chips), the amount
of diagnostics you can perform are limited.