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Nokia 1265 Description And Troubleshooting

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Nokia Customer Care
1265 (RH-103)
Mobile Terminal
RF Description and
Troubleshooting
Issue 1 04/2006
Company Confidential
© 2007 Nokia Corporation

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  Summary of Contents for Nokia 1265

  • Page 1 Nokia Customer Care 1265 (RH-103) Mobile Terminal RF Description and Troubleshooting Issue 1 04/2006 Company Confidential © 2007 Nokia Corporation...
  • Page 2: Table Of Contents

    Rx Introduction ....................13 FTM Setup for Rx Troubleshooting..............13 Cell Receiver Check from RF to DVGA............14 Receiver DC Test Points .................15 Receiver RF Test Points .................16 Rx Path Troubleshooting .................17 Page 2 © 2007 Nokia Corporation Company Confidential Issue 1 04/2007...
  • Page 3: Component Layout

    1265 (RH-103) Nokia Customer Care RF Description and Troubleshooting Component Layout Figure 1 and Figure 2 show the main components of the 1265 mobile terminal. RF connector Figure 1: Component layout (Top) Issue 1 04/2007 © 2007 Nokia Corporation Company Confidential...
  • Page 4 1265 (RH-103) RF Description and Troubleshooting RF Antenna feed point Front end module (Duplexer/PA/Coupler) Rx Saw filter 32.768KHz Crystal QSC6010 single chip 19.2MHz XTAL Figure 2: Component layout (Bottom) Page 4 © 2007 Nokia Corporation Company Confidential Issue 1 04/2007...
  • Page 5: Tx Troubleshooting

    1265 (RH-103) Nokia Customer Care RF Description and Troubleshooting Tx Troubleshooting Tx System Block Diagram Front End Module Figure 3: Tx system block diagram Issue 1 04/2007 © 2007 Nokia Corporation Company Confidential Page 5...
  • Page 6: Tx Introduction

    The driver amplifier output is routed to the final stages of the transmit chain – power amplifier, direction coupler, duplexer, and antenna. Main Tx Component Front End Module (Duplexer/PA/Coupler) QSC6010 Single chip Figure 4: Tx components Page 6 © 2006 Nokia Corporation Company Confidential Issue 1 04/2007...
  • Page 7: Ftm Setup For Tx Troubleshooting

    14. Set “Set TX AGC” to “90”. 15. Select “ADC Channel” to Channel “4”. 16. Click “Get ADC” bottom to Power detector ADC value. Figure 5: FTM dialog box Issue 1 04/2007 © 2007 Nokia Corporation Company Confidential Page 7...
  • Page 8: Tx Dc Test Points

    0V for high gain mode 2.6V for low gain mode VREG_MSMP 2.6V VREG_RFTX 2.6V Cell: _ 0.37 < 5 dBm _ 0.5 at 15 dBm _ 0.8 V at 25 HDET_CELL Table 1: Tx DC Test Points Page 8 © 2007 Nokia Corporation Company Confidential Issue 1 04/2007...
  • Page 9: Tx Rf Test Points

    Table 2 shows the test points shown in Figure 7. Test Point Description Value U6010 output 4dBm PA input 2dBm PA output 28dBm RF connector 24dBm Table 2: Tx RF Test Points Issue 1 04/2007 © 2007 Nokia Corporation Company Confidential Page 9...
  • Page 10: Tx Dc Test Points

    2.6V ~1.3kΩ to ground U6010 Table 3: Tx DC Test Points and RF Supply Line Resistance to Ground *Note: Always measure resistance measure resistance with the phone powered off Page 10 © 2007 Nokia Corporation Company Confidential Issue 1 04/2007...
  • Page 11: Tx Path Troubleshooting

    Memory IC is underfilled and can not be replaced. • The shield case can not be reused after removal. • After using the heatgun, the domesheet needs to be replaced. Issue 1 04/2007 © 2007 Nokia Corporation Company Confidential Page 11...
  • Page 12: Rx Troubleshooting

    1265 (RH-103) RF Description and Troubleshooting Rx Troubleshooting Rx System Block Diagram Front End Module Figure 9: Rx DC troubleshooting test points Page 12 © 2007 Nokia Corporation Company Confidential Issue 1 04/2007...
  • Page 13: Rx Introduction

    Set “Connect Phone”. Set “Set FTM “. Set “RF Mode” to “CDMA800”. Set “Set Channel “to Channel “384”. Set “Set LNA Range” to whatever needed. Figure 10: FTM dialog box Issue 1 04/2007 © 2007 Nokia Corporation Company Confidential Page 13...
  • Page 14: Cell Receiver Check From Rf To Dvga

    1. Start FTM in Local Mode with only the Rx path turned on and set LNA_GAIN_STATE=0. 2. Inject a –91 dBm CW signal of 881.52 MHz. 3. Get DVGA value from FTM dialog box. The value should approximate 2200. Page 14 © 2007 Nokia Corporation Company Confidential Issue 1 04/2007...
  • Page 15: Receiver Dc Test Points

    Table 4 includes the descriptions and values for Rx DC troubleshooting test points shown in Figure 11. Test Point Description Value VREG_MSMP,c250 2.6V VREG_RFRX,c278 2.6V RBIAS LNA,r623 0.11V Table 4: Rx DC Test Points Issue 1 04/2007 © 2007 Nokia Corporation Company Confidential Page 15...
  • Page 16: Receiver Rf Test Points

    Table 5 includes the descriptions and values for Rx RF troubleshooting test points shown in Figure 14. Test Point Description Value LNA IN -28dBm RX SAW INPUT -48dBm RX SAW OUTPUT -51dBm Table 5: Rx RF Test Points Page 16 © 2007 Nokia Corporation Company Confidential Issue 1 04/2007...
  • Page 17: Rx Path Troubleshooting

    Memory IC is underfilled and can not be replaced. • The Shielding Cover can not be reused after removal. • After using the heatgun, the domesheet needs to be replaced. Issue 1 04/20 © 2007 Nokia Corporation Company Confidential Page 17...
  • Page 18 1265 (RH-104) RF Description and Troubleshooting This page intentionally left blank. Page 18 © 2007 Nokia Corporation Company Confidential Issue 1 04/2007...

This manual is also suitable for:

Rh-103