Nokia 3105 Servicehandbuch
RH-48
Troubleshooting — Antenna
CCS Technical Documentation
Page 4
©
2003 Nokia Corporation Confidential
Issue 1 11/2003
Internal Antenna Missing
Figure 3: RH-48 chassis assembly
If the internal antenna is missing, install one. If the radiator looks obviously damaged,
then replace the internal antenna.
then replace the internal antenna.
If no internal antenna is installed, the antenna gain will be degraded by more than
25dB.
25dB.
Damaged RF Feed Pin or Ground Pin
Figure 4: Top and bottom views of the RH-48 internal antenna
If either the RF feed pin or ground pin are broken or bent such that either pin will not
touch the PWB, then the internal antenna must be replaced. If the springs for the RF or
ground pin appear damaged, then the internal antenna must be replaced. If the slot in
the radiator has a significantly different shape, then the correct internal antenna must
be installed. If there is any other obvious damage to the radiator (dents, corrosion), then
the antenna should be replaced. If the pin gets stuck or has excessive friction in the plas-
tic tube/guiding feature, then the spring will not work properly and the antenna should
be replaced.
touch the PWB, then the internal antenna must be replaced. If the springs for the RF or
ground pin appear damaged, then the internal antenna must be replaced. If the slot in
the radiator has a significantly different shape, then the correct internal antenna must
be installed. If there is any other obvious damage to the radiator (dents, corrosion), then
the antenna should be replaced. If the pin gets stuck or has excessive friction in the plas-
tic tube/guiding feature, then the spring will not work properly and the antenna should
be replaced.