Nokia 6275 Antenna Description And Troubleshooting
Mobile terminals
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Also See for 6275:
- User manual (209 pages) ,
- Rf description and troubleshooting (64 pages) ,
- Baseband description and troubleshooting (48 pages)
Related Manuals for Nokia 6275
Summary of Contents for Nokia 6275
- Page 1 Nokia Customer Care 6275/6275i (RM-154) Mobile Terminals Antenna Description and Troubleshooting Issue 1 - September 2006 Company Confidential...
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Page 2: Table Of Contents
6275/6275i (RM-154) Antenna Description and Troubleshooting Nokia Customer Care Contents Page Introduction ..............................3 CDMA Antenna on the E-Cover Assembly....................4 Damaged CDMA Radiator Bezel Assembly ................... 4 Missing or Damaged CDMA Antenna and IHF Pogo Pins ..............4 IHF Module ..............................5 Obstructed RF Feed and Ground Pads .................... -
Page 3: Introduction
Antenna Description and Troubleshooting Introduction This troubleshooting guide addresses potential failures that affect antenna performance of the 6275/6275i mobile terminals and discusses methods for correction of these failures. Following are the three serviceable antennas used in the 6275/6275i mobile terminals: •... -
Page 4: Cdma Antenna On The E-Cover Assembly
6275/6275i (RM-154) Antenna Description and Troubleshooting Nokia Customer Care CDMA Antenna on the E-Cover Assembly The E-cover (or antenna cover assembly) is comprised of the E-cover plastic part, the CDMA antenna (or CDMA radiator) and the bezel assembly. The bezel assembly includes the camera, flash windows, and the bezel. -
Page 5: Ihf Module
6275/6275i (RM-154) Nokia Customer Care Antenna Description and Troubleshooting IHF Module The IHF module impacts the CDMA antenna performance. If there is any damage to the IHF module, replace the acoustic module. GPS Antenna Flex Strip on side of IHF... - Page 6 6275/6275i (RM-154) Antenna Description and Troubleshooting Nokia Customer Care Perform the DC conductivity test without a cable attached to the RF connector. Because the RF connector is also a switch, the RF output disconnects from the RF input when a cable is inserted into the RF connector.
- Page 7 6275/6275i (RM-154) Nokia Customer Care Antenna Description and Troubleshooting Figure 5: CDMA antenna matching network schematics Issue 1 - September 2006 Company Confidential Page 7...
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Page 8: Auxiliary Antennas: Gps, Bt, And Fm
6275/6275i (RM-154) Antenna Description and Troubleshooting Nokia Customer Care Auxiliary Antennas: GPS, BT, and FM See the Disassembly chapter for instructions about disassembling the mobile terminal for auxiliary antenna troubleshooting. GPS Antenna The GPS antenna is a printed trace on a flex that adheres to the plastic audio module. -
Page 9: Bluetooth Antenna
6275/6275i (RM-154) Nokia Customer Care Antenna Description and Troubleshooting • If the GPS flex antenna shows damage to the audio outer gasket or screen (e.g., permanently creased, indented, torn, dislodged, distorted, or pressed to the side, abnormal shape, texture, coloration), replace the GPS/audio module. -
Page 10: Circuit Diagrams And Chip Locations
6275/6275i (RM-154) Antenna Description and Troubleshooting Nokia Customer Care The FM antenna system has following possible failure modes: • If the chip components are bad, replace them. • If the UHJ or Pop-port connector is bad, replace connector. • If the headset is bad, replace it. - Page 11 6275/6275i (RM-154) Nokia Customer Care Antenna Description and Troubleshooting Figure 11: Matching chips for the Pop-port connector on the system connector schematic Figure 12: Matching chips for the Pop-port connector on the top PWB component layout Issue 1 - September 2006...
- Page 12 6275/6275i (RM-154) Antenna Description and Troubleshooting Nokia Customer Care Figure 13: Bluetooth matching chips on the bottom PWB component layout Page 12 Company Confidential Issue 1 - September 2006...
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Page 13: Sar Reduction Foil
6275/6275i (RM-154) Nokia Customer Care Antenna Description and Troubleshooting SAR Reduction Foil The SAR reduction feature uses three A-cover grounds through three clips on the C-cover. A-cover grounding impacts the radiation performance of the mobile terminal. If the clips of C-cover are not touching the PWB or A cover, are corroded, or are obstructed, replace the C-cover. - Page 14 6275/6275i (RM-154) Antenna Description and Troubleshooting Nokia Customer Care This page intentionally left blank. Page 14 Company Confidential Issue 1 - September 2006...