Rf Connector Failure - Nokia RH-17 Series Ccs Technical Documentation

CCS Technical Documentation
tor is installed upside down, then the pads are not soldered to the PWB and the inductor
needs to be flipped and soldered correctly.

RF Connector Failure

The RF connector could fail by not connecting the RF input to the RF output of the RF
connector. If this happens, then the antenna gain will degrade by about 25 dB. This can
be checked by testing for DC conductivity between the RF input and RF output of the RF
connector. Note the DC conductivity test must be done without any cable attached to
the RF connector. Since the RF connector is also a switch, the RF output will be discon-
nected from the RF input when a cable is inserted into the RF connector. When a cable
is inserted, the RF input is connected to the RF connector.
RF input - connector to duplexer, next to shunt inductor
RF output - connects to antenna pad through vias
RF connector - connects to coaxial cable
If the RF input is not connected properly to the RF output, then the RF connector must
be replaced.
Issue 1 04/2003
Nokia Corporation
Troubleshooting — Antennas
Confidential
RH-17
Page 13