Nokia 2255 Manual Manual pdf 12 page image
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Nokia 2255 Manual

Also see for 2255: User guideUser guideAntenna Description and TroubleshootingBaseband Description and TroubleshootingDisassembly/Assembly

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Contents
  1. troubleshooting
  2. Table Of Contents
  3. Mobile Terminal Components
  4. Preliminary RF Troubleshooting
  5. Transmitter Block Diagram
  6. Transmitter Schematics
  7. Transmitter Troubleshooting
  8. Failed Test: Tx PA Detector
  9. Tx RF Test Points
  10. Tx AGC Tuning
  11. Receiver Troubleshooting
  12. Receiver Schematics
  13. Turning on the Rx Path
  14. Switching the Rx Gain, IF, and IP States
  16. Receiver RF Troubleshooting Test Points
  17. Receiver IF Troubleshooting Test Points
  18. Cell Receiver Check from RF to IQ
  19. Receiver Diagnostic using Signal Tracing and Call Box
  20. Rx Front-End IC (N7150) DC Troubleshooting
  21. Synthesizer Troubleshooting
  22. Synthesizer Schematic
  23. Synthesizer Troubleshooting Setup
  24. MHZ VCTCXO Reference Clock
  25. VCTCXO Manual Tuning
  26. UHF Synthesizer Test Points
  27. UHF Synthesizer Schematic
  28. Incorrect UHF Frequency
  29. Rx VHF Schematic
  30. Incorrect Rx VHF Frequency
  31. Tx VHF Schematic
  32. Incorrect Tx VHF Frequency
  33. FM Radio Troubleshooting
Nokia 2255 Manual Manual pdf 12 page image
2255 (RM-97)RF Description and Troubleshooting Nokia Customer CarePage 12 ©2005 Nokia Corporation Company Confidential ISSUE 1 10/2005Tx RF Test PointsFigure 10 and Figure 11 are the transmitter DC/RF test points. See Table 1 on page 14 fortest point descriptions and values.Figure 10: Tx DC/RF test points - PA section321 49TP12TP13TP4TP3TP11PNMICDC-DC
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2255
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