Damaged Rf Feed Or Ground Pins; Damaged Ihf Speaker Pogo Pins; Wrong Internal Antenna Installed - Nokia RH-66 Troubleshooting Manual

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Damaged RF Feed or Ground Pins

The main antenna and the GPS antenna have pins (spring clips) that must properly touch
the PWB.
• If the main antenna's RF feed pin does not touch the PWB, the antenna gain
degrades by more than 25 dB and the GPS antenna is detuned.
• If the ground pin of the main antenna does not touch the PWB, the antenna gain
degrades from 5 to 10 dB and the GPS antenna is detuned.
• If the GPS antenna's RF feed pin does not touch the PWB, then the GPS antenna
gain degrades by more than 20 dB.
• If the ground pin of the GPS antenna does not touch the PWB, the GPS antenna
gain may degrade by more than 5 dB.
• If either the RF feed pin or ground pin are broken or bent such that either pin
does not touch the PWB, replace the internal antenna.
• If either the RF pin or ground pin springs appear damaged, replace the internal
antenna.

Damaged IHF Speaker Pogo Pins

In Figure 3, the two pogo pins on the back of the internal antenna must properly touch
the PWB. If not, the PCS gain of the internal antenna can degrade by 2 dB and no audio
will emit from the speaker.

Wrong Internal Antenna Installed

The internal antenna is mechanically similar to the one used in the 2112 mobile terminal.
Following are important differences between these antennas:
• The slot pattern is different.
• The feed/ground leg locations are different.
Issue 1 03/2005
Main antenna
RF feed pin
Main antenna
ground pin
IHF mini speaker pogo pins
Figure 3: Back view of the internal antenna
©2005 Nokia Corporation
2115i/2116/2116i (RH-66)
Antenna Description and Troubleshooting
GPS antenna
ground pin
GPS antenna
RF feed pin
Company Confidential Page 5