Nokia 6265 Guide

Nokia Customer Care
6265/6265i/6268 (RM-66)
Mobile Terminals
Issue 1 11/2005 Company Confidential ©2005 Nokia Corporation
Antenna Description and
Troubleshooting

6265/6265i/6268 (RM-66)
Antenna Description and Troubleshooting
Page 2 ©2005 Nokia Corporation Company Confidential Issue 1 11/2005
Contents Page
Introduction ..................................................................................................................................................... 3
Main CDMA Antenna..................................................................................................................................... 3
E-cover Assembly/CDMA Antenna .........................................................................................................3
Damaged CDMA Sticker or Bezel Assembly .........................................................................................5
Missing or Damaged CDMA Antenna Pogo Pins ................................................................................5
Obstructed RF Feed and Ground Pads................................................................................................. 5
Broken or Missing Matching Circuit ................................................................................................... 6
Damaged RF Switch................................................................................................................................. 6
Auxiliary Antennas: GPS, BT and FM ........................................................................................................ 7
Disassembly for Auxiliary Antenna Removal .......................................................................................7
GPS Antenna ...............................................................................................................................................10
Possible GPS Antenna System Failure Modes................................................................................ 10
BT Antenna ..................................................................................................................................................15
Possible BT Antenna System Failure Modes................................................................................... 15
FM Antenna .................................................................................................................................................17
Possible FM Antenna System Failure Modes ................................................................................. 17
Circuit Diagrams and Chip Locations for Auxiliary Antennas......................................................... 19
UIM Card Holder .......................................................................................................................................... 24
A-cover Foil ................................................................................................................................................... 24
Missing or Damaged Foil .........................................................................................................................25
Missing or Damaged GND Pogo Pins ...................................................................................................25
HAC Coil ......................................................................................................................................................... 26
Missing or Damaged HAC Coil ...............................................................................................................26

Nokia Customer Care Antenna Description and Troubleshooting
6265/6265i/6268 (RM-66)
Issue 1 11/2005 ©2005 Nokia Corporation Company Confidential Page 3
Introduction
This troubleshooting guide addresses potential failures that affect antenna performance
of the 6265/6265i/6268, and discusses methods for correction of these failures.
Main CDMA Antenna
E-cover Assembly/CDMA Antenna
The E-cover assembly is comprised of the E-cover plastic portion, the CDMA antenna
(CDMA radiator) and the bezel assembly (camera and flash windows and the bezel). The
E-cover snaps into the D-cover assembly with 4 corner tabs of the E-cover. There is also
a snap-in feature located on the top right corner (inner side of the E-cover).
The CDMA antenna (radiator) is a flex (sticker) glued on the inside surface of the E-cover
and covered in a small area by the bezel assembly.
The E-cover is manufactured according to the following steps:
• The CDMA antenna sticker is glued to the inside of the E-cover. Its position is
controlled very accurately.
• The camera and flash bezel assembly is heat-staked on the E-cover, and covers a
small area of the sticker.
If the bezel assembly is removed, the E-cover assembly will be permanently damaged
because the bezel assembly is heat-staked onto the E-cover. Removing it will
permanently deform the heat-staking pins. It is not possible to remove the CDMA
antenna without removing the bezel assembly. Therefore, if there is any defect in the
E-cover assembly (bezel or radiator), the entire part must be replaced.
E-cover/CDMA antenna

6265/6265i/6268 (RM-66)
Antenna Description and Troubleshooting
Page 4 ©2005 Nokia Corporation Company Confidential Issue 1 11/2005
Figure 1: E-cover assembly
To remove the E-cover assembly from the D-cover, use the SRT-6 opening tool to release
the four snap-in tabs that lock the E-cover from the D-cover, as shown.
Figure 2: E-cover assembly removal
To re-install the E-cover assembly, align the E-cover above the D-cover and apply vertical
force to engage the snap-in feature in the D-cover assembly, as shown.
Figure 3: E-cover assembly installation
Flash window CDMA antenna
(radiator)
Camera window Bezel E-cover plastic
CDMA antenna
(radiator)
Bezel assembly

Nokia Customer Care Antenna Description and Troubleshooting
6265/6265i/6268 (RM-66)
Issue 1 11/2005 ©2005 Nokia Corporation Company Confidential Page 5
Damaged CDMA Sticker or Bezel Assembly
• If the CDMA sticker is damaged (scratched, cut, cracked, corroded, tabs broken),
replace the entire E-cover assembly. It is not possible to replace only the CDMA
sticker on the existing E-cover, as noted in the E-cover Assembly/CDMA Antenna
section above.
• If the bezel assembly is damaged (windows or bezel scratched, cracked), replace
the entire E-cover assembly. It is not possible to replace only the bezel assembly
on the existing E-cover, as noted in the E-cover Assembly/CDMA Antenna section
above.
Missing or Damaged CDMA Antenna Pogo Pins
The CDMA antenna is connected to the PWB by two pogo pins. These pogo pins are
located on the top left corner of the main PWB at a distance of ~5mm from each other.
• If either antenna pogo pin is damaged (stuck, broken) or missing, replace it. An
improper connection between the CDMA antenna and the PWB due to damaged
or missing pogo pins will degrade the antenna performance (more than 25dB).
Figure 4: E-cover assembly removed from D-cover
Obstructed RF Feed and Ground Pads
The CDMA antenna feed and ground pogo pins touch the main PWB on ground and feed
pads.
• If the main antenna feed pad is obstructed, removed or covered, then the CDMA
antenna feed pogo pin will not touch the PWB and the antenna gain will degrade
by more than 25 dB.
• If the CDMA antenna ground pad is obstructed, removed, covered the ground
pogo pin will not touch the PWB causing the antenna gain to degrade more than
5dB.
D-cover assembly E-cover assembly
Ground pogo pin
Feed pogo pin

6265/6265i/6268 (RM-66)
Antenna Description and Troubleshooting
Page 6 ©2005 Nokia Corporation Company Confidential Issue 1 11/2005
• If corrosion is present or the pads are missing, replace the PWB.
• If either pad is obstructed or covered, the pads should be cleared and/or cleaned.
Broken or Missing Matching Circuit
• If the CDMA antenna matching circuit is damaged or missing, replace the
component.
• If the PWB is permanently damaged (broken pad or trace), replace the PWB.
Damaged RF Switch
If the CDMA RF connector fails (does not connect RF input to RF output of the
RF connector) the antenna gain will degrade by about 25dB. Check for this failure by
testing for DC conductivity between RF input and RF output of the RF connector. Note
that 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 is disconnected from
the RF input when a cable is inserted into the RF connector. If no cable is inserted, the RF
input is connected to the RF output of RF connector.
• CDMA RF input - connects to duplexer
• CDMA 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 replace the RF connector.
Figure 5: Main PWB
Feed pad
CDMA antenna
matching network
RF switch
Ground pad

Nokia Customer Care Antenna Description and Troubleshooting
6265/6265i/6268 (RM-66)
Issue 1 11/2005 ©2005 Nokia Corporation Company Confidential Page 7
Auxiliary Antennas: GPS, BT and FM
Disassembly for Auxiliary Antenna Removal
1. Remove the battery cover.
Figure 6: Battery cover removal
2. Remove the battery.
Figure 7: Battery removal

6265/6265i/6268 (RM-66)
Antenna Description and Troubleshooting
Page 8 ©2005 Nokia Corporation Company Confidential Issue 1 11/2005
3. Remove the E-cover.
Figure 8: E-cover removal
4. Remove the four Torx screws.
Figure 9: Screw removal

Nokia Customer Care Antenna Description and Troubleshooting
6265/6265i/6268 (RM-66)
Issue 1 11/2005 ©2005 Nokia Corporation Company Confidential Page 9
5. Remove the D-cover.
Figure 10: D-cover removal
6. Remove the audio module.
Figure 11: Audio module removal

6265/6265i/6268 (RM-66)
Antenna Description and Troubleshooting
Page 10 ©2005 Nokia Corporation Company Confidential Issue 1 11/2005
GPS Antenna
GPS antenna is a printed trace on a flex that adheres to the plastic audio module. It
connects to two pogo pins soldered (SMD) to the main PWB. On the back of the PWB
(the side with the battery connector and camera), the GPS SMD pogo pins (3.8mm high)
are located in the upper right corner, or upper right from the SMD flash pogo pins
(5.5mm high). The GPS flex wraps around the side of the plastic audio module with the
end near the audio port at the top of the module. On the audio chamber the GPS flex
wraps clockwise, to the right where the GPS pogo pins are located, half way on the right
of the audio module. The GPS flex wraps downward and under the audio chamber with a
tab connecting to the GPS SMD pogo pins on the main PWB. Two chip cellular-blocking
components are found on the main PWB close to the GPS antenna pogo pin pads. An RF
switch or connector is used to test the GPS RF components directly. See images below.
Possible GPS Antenna System Failure Modes
Table 1 shows possible GPS antenna system failure modes and their solutions.
Table 1: GPS antenna system failure modes
Failure Solution
Solder bridge of the two GPS pogo pin pads on
the main PWB.
Remove and clean solder bridge.
The GPS, SMD pogo pins are misaligned. Properly align and solder pins.
The GPS, SMD pogo pins do not operate freely
or easily in their sleeves.
Use good GPS pogo pins.
Wrong pogo pins are soldered at the GPS SMD
pogo pin location. Note that the flash pogo pins
are 5.5mm high while the GPS SMD pogo pins
are 3.8mm high.
Use proper GPS pogo pins.
The GPS, SMD pogo pins are improperly
soldered to their pads (cold solder joint, cracked
solder joint, insufficient solder, excessive solder
causing tilting).
Properly align and solder pins.
The GPS flex antenna shows damage to the
pogo pin pad (pressure tearing, hole, cracking,
corrosion, bubbles).
Replace with good GPS/audio module.
The GPS flex antenna shows damage to the flex
(tearing, cracking, corrosion, bubble).
Replace with good GPS/audio module.
The GPS flex antenna shows damage to the
audio outer gasket or screen (permanently
creased, indented, torn, dislodged, distorted, or
pressed to the side, abnormal shape, texture,
coloration).
Replace with good GPS/audio module.
The GPS flex antenna trace shows damage, or
contamination. (Cracking, discoloration,
corrosion, bubble).
Replace with good GPS/audio module.

Nokia Customer Care Antenna Description and Troubleshooting
6265/6265i/6268 (RM-66)
Issue 1 11/2005 ©2005 Nokia Corporation Company Confidential Page 11
1. Push the audio module to the right to unlock the inner corner catches.
2. Carefully remove the audio module away from volume switch located by your
thumb.
If the GPS cellular blocking chip elements are
believed to be incorrect, then replace with
correct chips.
Replace with good GPS chip components.
If the GPS cellular RF switch or connector is
defective, replace the RF switch (make sure
orientation is correct)
Replace with good, properly oriented, GPS RF
switch.
Table 1: GPS antenna system failure modes(Continued)
Failure Solution
Note:
Try not to
dislodge.

6265/6265i/6268 (RM-66)
Antenna Description and Troubleshooting
Page 12 ©2005 Nokia Corporation Company Confidential Issue 1 11/2005
3. The GPS antenna feed tab at the bottom of the audio module.
4. The GPS antenna starts on right side.
5. The GPS antenna ends at the audio port. (Note the black, audio, outer gasket.)

Nokia Customer Care Antenna Description and Troubleshooting
6265/6265i/6268 (RM-66)
Issue 1 11/2005 ©2005 Nokia Corporation Company Confidential Page 13
6. The image shows the GPS/audio module - top side. The GPS trace starts at the
right side and wraps around to the audio gasket at top of the picture.
7. The audio module must be carefully installed under the small ledge inside the top
of the D-cover.
Caution: Do not damage the outer, audio port gasket.

6265/6265i/6268 (RM-66)
Antenna Description and Troubleshooting
Page 14 ©2005 Nokia Corporation Company Confidential Issue 1 11/2005
8. The audio module must be carefully pressed forward to first clear, and then
engage the catches near your thumbs.
9. The image below shows a properly installed GPS/audio module, locked in place by
the catches and small ledge.

Nokia Customer Care Antenna Description and Troubleshooting
6265/6265i/6268 (RM-66)
Issue 1 11/2005 ©2005 Nokia Corporation Company Confidential Page 15
BT Antenna
The BT antenna is a stamped, trimmed metal sheet formed with two spring contacts and
heat staked to a plastic support structure. This antenna is located to the right of the
battery with the baseband shield under it. It is inserted into the D-cover and makes
contact with two PWB pads below it. There is a hole in the top of the D-cover used to
catch a locking feature on the BT antenna plastic module. This outer catch and the catch
on the inside of the D-cover must be properly engaged. There are no antenna impedance
matching elements for BT on the main PWB.
Possible BT Antenna System Failure Modes
Table 2 shows possible BT antenna system failure modes and their solutions.
1. Release the outer catch of the in the D-cover hole that locks the BT antenna.
Figure 12: Outer catch inside D-cover
Table 2: BT antenna system failure modes
Failure Solution
The BT antenna spring clips are deformed. Replace with a good BT antenna. Exact spring
shape is required to guarantee the BT antenna's
ability to function if the mobile terminal is
dropped.
The BT antenna plastic heat stakes do not hold
the metal antenna firmly.
Replace with a good BT antenna.
The BT antenna plastic catch for the D-cover is
deformed or broken.
Replace with a good BT antenna.
The BT-antenna plastic antenna support is
deformed or broken.
Replace with a good BT antenna.
The D-cover is deformed or broken. Replace D-cover.

6265/6265i/6268 (RM-66)
Antenna Description and Troubleshooting
Page 16 ©2005 Nokia Corporation Company Confidential Issue 1 11/2005
2. Release the inner catch inside the D-cover that locks the BT antenna and the
outer catch. The spring contacts that feed the BT antenna are located to the left
of the catch.
Figure 13: BT antenna inner catch inside D-cover
3. The front of the BT antenna module shows the heat-staked metal strip, plastic
support module, plastic inner catch (lower middle) and the spring contacts (left).
The metal strip must be trimmed at the location of the last heat stake. The two
spring contacts should not be deformed, and should be the same length. These
spring contacts extend slightly beyond the plastic stopping post between them.
Figure 14: Front of BT antenna module
4. Back of the BT antenna module shows the heat-staked metal strip, plastic
support module, plastic inner catch (lower middle) and the spring contact (left).
The two spring clips should not be deformed and should be the same length.
These spring clips extend a little beyond the plastic stopping post between them.
Figure 15: Back of BT antenna module
Trim location

Nokia Customer Care Antenna Description and Troubleshooting
6265/6265i/6268 (RM-66)
Issue 1 11/2005 ©2005 Nokia Corporation Company Confidential Page 17
FM Antenna
The FM antenna uses the connection through a headset and the Universal Headset Jack
or the Pop-portTM connector to create an FM antenna of reasonable gain. The RF test
points are on the front of the main PWB at the bottom right side, near the end of the
Pop-portTM connector (on the opposite side of the PWB.) There are antenna impedance
matching chip components on the main PWB.
Possible FM Antenna System Failure Modes
Table 3 shows possible FM antenna system failure modes and their solutions.
FM antenna formed by connecting a headset to the Pop-portTM connector.
Figure 16: FM antenna - Pop-portTM connector
Table 3: FM antenna system failure modes
Failure Solution
The chip components are bad. Replace the chip components with good,
correct chips.
The connectors are bad. Replace the bad UHJ or Pop-portTM connector
with a good connector.
The headset is bad. Replace with a good headset.

6265/6265i/6268 (RM-66)
Antenna Description and Troubleshooting
Page 18 ©2005 Nokia Corporation Company Confidential Issue 1 11/2005
FM antenna formed by connecting a headset to the Universal Headset Jack (UHJ).
Figure 17: FM antenna - Universal Headset Jack (UHJ) connector

Nokia Customer Care Antenna Description and Troubleshooting
6265/6265i/6268 (RM-66)
Issue 1 11/2005 ©2005 Nokia Corporation Company Confidential Page 19
Circuit Diagrams and Chip Locations for Auxiliary Antennas.
Figure 18: UHJ FM antenna matching elements
Matching chips for UHJ

6265/6265i/6268 (RM-66)
Antenna Description and Troubleshooting
Page 20 ©2005 Nokia Corporation Company Confidential Issue 1 11/2005
Figure 19: Pop-portTM matching elements and one UHJ matching element
Matching chips for
Pop-portTM connector
FM circuit
Pop-portTM
connector
UHJ capacitor