Nokia 3105 Servicehandbuch
CCS Technical Documentation
Troubleshooting — Antenna
RH-48
Issue 1 11/2003
©2003 Nokia Corporation Confidential
Page 5
If the RF feed doesn’t touch the PWB, then the antenna gain will degrade by more than
25dB. If the ground pin doesn’t touch the PWB, then the antenna gain may degrade
about 5 to 10dB.
25dB. If the ground pin doesn’t touch the PWB, then the antenna gain may degrade
about 5 to 10dB.
If either of the IHF speaker pins is damaged or if the IHF speaker is nonfunctioning, then
the antenna module should be replaced.
the antenna module should be replaced.
Wrong Internal Antenna Installed
Figure 5: Top views of the RH-19 and RH-48 antennas
Figure 6: Bottom views of RH-19 and RH-48 antennas
The RH-48 and RH-19 antennas are similar in appearance. The important visual differ-
ence in the antennas is that the slot pattern is very different. Also, the RH-48 antenna is
thicker than the RH-19 antenna and also has a spacer on its back side.
ence in the antennas is that the slot pattern is very different. Also, the RH-48 antenna is
thicker than the RH-19 antenna and also has a spacer on its back side.
If the wrong antenna is installed, install the correct one.
RH-19 antenna
RH-48 antenna
RH-48 antenna
RH-48 antenna
RH-19 antenna
RH-48 antenna