Missing Gps Antenna, Damaged Gps Feed/Ground Pin Or Damaged Heatstick - Nokia RH-27 Series Troubleshooting Manual

RH-27
Troubleshooting - Antennas
Antenna
radiator
Figure 3: RH-27 (6225) antenna cap with and without radiator
If the antenna cap is missing or there is a cap but it has no radiator, install a new
antenna cap with radiator. If the radiator looks obviously damaged (dents, corrosion) or
the slot in the radiator has a significantly different shape, then install a new antenna cap
with correct radiator.
If no antenna or no radiator is installed, the antenna gain will be degraded by more than
25 dB.

Missing GPS antenna, damaged GPS feed/ground pin or damaged heatstick

GPS antenna
Heat stake of
GPS antenna
Figure 4: Back view of RH-27 (6225) C-cover with GPS antenna assembled
RH-27 GPS antenna is heat-staked to the C-cover. If any of the following events occurs,
the entire C-cover assembly should be replaced with a new one:
1 GPS antenna is missing
2 GPS antenna looks obviously damaged
3 Any of the three heat stakes appears damaged; the GPS antenna will be loose
4 Any of the three heat stakes are over-heated and GPS antenna melts into the
C-cover; antenna will look distorted and bent
5 Either GPS antenna feed or ground leg is broken or bent so that either pin will
not touch the PWB.
Page 4
©2003 Nokia Corporation
CCS Technical Documentation
Confidential
GPS
ground pin
GPS
feed pin
Issue 1 11/2003