Damaged Rf Feed, Ground Pins, Or Ihf Speaker Pins - Nokia 6235 Antenna Description And Troubleshooting

6235/6235i/6236i (RM-60)
Antenna Description and Troubleshooting
An integrated hands-free (IHF) mini speaker is integrated inside the plastic.
Note: The GPS antenna is only functional on models that support the GPS engine.

Damaged RF Feed, Ground Pins, or IHF Speaker Pins

The main antenna and the GPS antenna have pins (spring clips) that must properly touch
the PWB. Positioning of these pogo pins is shown in
inserted in the black plastic module.
Main antenna
pogo pins
RF feed pin of
main antenna
Ground pin of
main antenna
• One end of the pogo pin touches the antenna; the other end touches the pad on
the PWB. If either of them is missing or damaged (i.e. get stuck in the black
plastic module or loses the inside spring force), the antenna will lose contact to
the PWB. Then the antenna module must be replaced with a good one.
• 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 about 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.
Page 4
GPS antenna
radiator (IFA)
Figure 2: Internal antenna
IHF mini speaker pogo pins
Figure 3: Back view (internal antenna)
©2005 Nokia Corporation
Main antenna
radiator (PIFA)
Figure 3. Two pogo pins are
Ground pin of
GPS antenna
RF feed pin of
GPS antenna
Company Confidential
Rubber pad
Issue 1 04/2005