User Guide

RH-17
Troubleshooting — Antennas CCS Technical Documentation
Page 8 Nokia Corporation Confidential Issue 1 04/2003
Obstructed RF Feed and Ground Pads for the Internal Antenna
Figure 7: PWB layout of RF feed and ground pads, and bottom antenna clip
If the RF feed pad is obstructed, removed, or covered, then the RF feed pin will not touch
the PWB and then the antenna gain will degrade by more than 25 dB. If the ground pad
is obstructed, removed, or covered, then the ground pin will not touch the PWB, and then
the antenna gain may degrade about 5 to 10 dB. If corrosion is present or the pad is
missing, then most likely the PWB and phone needs to be replaced. In either pad is
obstructed or covered, the pad should be cleared and/or cleaned.
Broken or Missing Antenna Clip
Figure 8: Bottom antenna clip
If the bottom antenna clip does not contact the whip stopper, when the whip is fully
retracted, then the internal antenna gain will degrade by about 4-5 dB in the RX portion
of CELL band. If the antenna clip is installed backwards, is damaged, or is missing, then
install a new bottom antenna clip in the correct position.