Nokia 6255 サービスマニュアル
6255/6255i/6256/6256i (RM-19)
Antenna Description and Troubleshooting
Nokia Customer Care
Page 8
©2005 Nokia Corporation Company Confidential
Issue 2 05/2005
Figure 8: Bottom antenna clip and matching circuit
• If the antenna clip is installed backwards, is damaged, or is missing, install a new
bottom antenna clip in the correct position.
Obstructed Whip Stopper
If the whip stopper does not properly contact the bottom antenna clip, then the internal
antenna gain will degrade by about 4-5dB at Cell band and 3-10dB at PCS band when
the whip is retracted.
antenna gain will degrade by about 4-5dB at Cell band and 3-10dB at PCS band when
the whip is retracted.
Figure 9: Whip stopper when the whip is fully retracted
• If the whip stopper is corroded or blocked by the whip straw, replace the whip
assembly.
• If the whip stopper is obstructed or dirty, remove the obstruction and/or dirt.
Bottom clip
Bottom matching
circuit
circuit
Whip stopper contaccts
the bottom antenna clip
the bottom antenna clip