Main Antenna; Bluetooth Antenna Functionality; Antenna Troubleshooting - Nokia RM-598 Service Manual

RM-598; RM-604
RF Troubleshooting
Figure 25 Antenna contacts
The main antenna functionality must also be checked by a GoNoGo test as described in Technical Bulletin TB
214.

Bluetooth antenna functionality

The Bluetooth antenna is an IFA type. The grounded branch is a wired line on the PWB, the other branch is
a wire on the flex. The Bluetooth antenna includes a spring clip, which establishes the contact to Bluetooth
feed via a gold plated contact area on the PWB.
Figure 26 BT antenna

Antenna troubleshooting

Main antenna

Check that the GND and feed pads take proper contact to the C-Clips on the main PWB. Also check visually that
all the matching components are soldered on the flex. In case of damage, the whole antenna module needs
to be replaced.
If only low band or high band is working properly, it may indicate a faulty matching network. Defects in the
solderings or breaks in the wiring of matching should be seen. In this case, also antenna module needs to
be replaced.
Issue 1 COMPANY CONFIDENTIAL Page 4 –31
Copyright © 2009 Nokia. All rights reserved.