Nokia 2125 Troubleshooting Manual page 6

2125/2125i/2126/2126i/2128i (RH-71)
Antenna Description and Troubleshooting
• Models 2125i, 2126i and 2128i include a GPS antenna. Models 2125 and 2126 do
not.
Note: GPS is functional only in the Models 2125i, 2126i and 2128i.
• The main radiators for the 2125i, 2126i and 2128i include markings that begin
with an "F". The 2125 and 2126 markings begin with a "C".
2125i, 2126i, 2128i
Figure 4: Top view of the
Installing the 2125, 2126 antenna in the 2125i, 2126i, 2128i is not compliant with
Nokia's FCC submission because the 2125, 2126:
• Use a single-band (no PCS)
• Do not have a GPS antenna
• Are not tuned correctly for the 2125i, 2126i, 2128i mechanics
• Do not make contact with the feed/ground pads on the PWB
Use the following to troubleshoot the internal antenna:
• If the wrong antenna is installed, install the correct one.
• If the slot in the radiator has a significantly different shape, install the correct
internal antenna. Be aware that the shape of the slot can vary slightly. The length
of the horizontal slot and the opening of the vertical slot can vary by a few
millimeters because the antennas are tuned for each batch of plastic frames.
• If there are other obvious damages to the radiator (e.g., dents and corrosion),
replace the antenna.
• If the pin is stuck or has excessive friction with the plastic tube/guiding feature,
the spring will not work properly. Replace the antenna.
Page 6
GPS antenna
2125i, 2126i, 2128i
©2005 Nokia Corporation
2125, 2126
(left) and (right) internal antennas
2125, 2126
Company Confidential ISSUE 1 08/2005