User Guide

CCS Technical Documentation Troubleshooting — Antennas
RH-17
Issue 1 04/2003 Nokia Corporation Confidential Page 9
Obstructed Whip Stopper
Figure 9: Whip stopper as shown when the whip is fully retracted
If the whip stopper is corroded or blocked by the whip straw, then the whip assembly
needs to be replaced. If the whip stopper is obstructed or dirty, then the obstruction
and/or dirt needs to be removed. If the whip stopper doesn't properly contact the bot-
tom antenna clip, then the internal antenna gain will degrade by about 4-5 dB in the RX
portion of CELL band.
Grounding of Display Frame
Figure 10: Display assembly
Note that the display frame is grounded to the PWB through the two ground clips. The
grounding of the display frame will impact the radiation performance of the phone. If
the clips are not touching the PWB, or are corroded, or obstructed, then the display
frame should be replaced.