Obstructed Ihf Speaker, Rf Feed, And Ground Pads - Nokia 6235 Antenna Description And Troubleshooting

6235/6235i/6236i (RM-60)
Antenna Description and Troubleshooting

Obstructed IHF Speaker, RF Feed, and Ground Pads

The antenna module connects to the PWB at specific places. These are show in
IHF speaker
pads
Ground pad for
main antenna
RF feed pad for
main antenna
Figure 5: PWB layout of IHF speaker, RF feed, and ground pads
Check the following problems:
• If the main antenna feed pad is obstructed, removed or covered, then the internal
antenna feed pogo pin will not touch the PWB and the antenna gain will degrade
by more than 25 dB.
• If the main antenna ground pad is obstructed, removed or covered, then the
ground pogo pin will not touch the PWB and the antenna gain will degrade more
than 5 dB.
• If corrosion is present or the pads are missing, then the PWB and phone needs to
be replaced.
• If either pad is obstructed or covered, the pads should be cleared and cleaned.
• If the GPS antenna feed pad is obstructed, removed or covered, then the GPS
antenna feed leg will not touch the PWB.
• If the ground pad is obstructed, removed or covered, then the ground spring clip
will not touch the PWB.
• If the IHF (Internal Hands Free) speaker pads are obstructed, removed or covered
then the IHF speaker will not produce sound.
• If corrosion is present or the pads are missing, then the PWB and phone needs to
be replaced.
• If either IHF speaker pad is obstructed or covered, the pad should be cleared and
cleaned.
Page 6
RF feed pad for
GPS antenna
©2005 Nokia Corporation
Ground pad for
GPS RF connector
GPS antenna
Company Confidential
Figure 5.
Issue 1 04/2005