Rf Feed Pin/Ground Pin, Ihf Speaker Pins In C-Cover Missing Or Damaged - Nokia RH-27 Series Troubleshooting Manual

CCS Technical Documentation

RF feed pin/ground pin, IHF speaker pins in C-cover missing or damaged

IHF speaker
pogo pins
Two pogo pins are inserted in the C-cover. One end of the pogo pin touches the antenna,
the other end (in Figure 5) touches the pad on the PWB. If either of the pogo pins is
missing, or either of the pogo pins is obviously damaged (stuck in the C-cover plastic
tube, loose the inside spring force), the antenna will lose the contact to the PWB.
Replace the whole C-cover assembly with a correct new one.
If the RF feed doesn't touch the PWB, then the antenna gain will degrade by more than
25 dB. If the ground pin doesn't touch the PWB, then the antenna gain may degrade
about 5 to 10 dB.
If either of the IHF speaker pins is damaged or missing, the speaker will not connect to
PWB. Antenna PCS gain will drop 2 dB. The C-cover assembly should be replaced.
Issue 1 11/2003 Confidential
Figure 5: Inside view of the C-cover
©2003 Nokia Corporation
RH-27
Troubleshooting - Antennas
GPS antenna
RF ground
pogo pin
RF feed
pogo pin
Page 5