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Nokia 6265 Rf Description And Troubleshooting
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Nokia 6265 Rf Description And Troubleshooting

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

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Summary of Contents for Nokia 6265

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

  • Page 2: Table Of Contents

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting Contents Page Mobile Terminal Components ........................5 Preliminary RF Troubleshooting........................7 Mobile Terminal Cannot Make a Call ....................7 Tx Power Low ..............................7 Transmitter RF Troubleshooting ......................... 8 Transmitter Block Diagram ........................9 Transmitter Schematics ...........................10...
  • Page 3 6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Tx UHF LO Schematic ..........................61 Tx UHF LO (Tx IC) Troubleshooting .......................62 UHF PCS Tx LO (3700 ~ 3819.90)/2MHz Typical Spectrum ............63 UHF CELL Tx LO (3296.16 ~ 3395.88)/4MHz Typical Spectrum ...........64 GPS Troubleshooting...........................
  • Page 4 6265/6265i/6268 (RM-66) RF Description and Troubleshooting Nokia Customer Care This page intentionally left blank. ©2005 Nokia Corporation Page 4 Company Confidential Issue 1 11/2005...

  • Page 5: Mobile Terminal Components

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Mobile Terminal Components The mobile terminal includes two PWB boards, the main PWB and the UI PWB. Following are the components of the PWB. Antenna connector pad RF connector GPS connector...
  • Page 6 6265/6265i/6268 (RM-66) RF Description and Troubleshooting FM Radio production test points RX I/Q signal test points Figure 2: PWB - RF component layout - bottom ©2005 Nokia Corporation Page 6 Company Confidential Issue 1 11/2005...

  • Page 7: Preliminary Rf Troubleshooting

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Preliminary RF Troubleshooting The following sections identify steps to troubleshoot some common RF issues. Mobile Terminal Cannot Make a Call Verify the following if the mobile terminal cannot make a call: 1.

  • Page 8: Transmitter Rf Troubleshooting

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting Nokia Customer Care Transmitter RF Troubleshooting Following are the main Tx RF components. Tx IC PCS Tx SAW filter PCS PA C7317 PCS Duplexer PCS Coupler Diplexer Cell coupler Cell Tx SAW filter Cell PA...

  • Page 9: Transmitter Block Diagram

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Transmitter Block Diagram Following is the block diagram for the Tx RF system. RF_BUS_CLK (19.2 MHz ) RF_BUS_ENABLE ( SIO from TIKU) Tx IC RF_BUS_DATA Antenna N7000 PWROUT VCC_PA PA_BIAS Div 4...

  • Page 10: Transmitter Schematics

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting Nokia Customer Care Transmitter Schematics The following schematics are for general reference only. See the Schematics chapter for detailed versions. N7000 Tx IC Cell Tx filter Tx LO lock voltage PCS Tx filter Loop filter Figure 5: Transmitter schematic 1 ©2005 Nokia Corporation...
  • Page 11 6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting PCS duplexer PCS PA Diplexer Antenna Sense Line Couplers Cell PA Power detector Cell duplexer DC-DC Converter Thermistor Figure 6: Transmitter schematic 2 ©2005 Nokia Corporation Issue 1 11/2005 Company Confidential...

  • Page 12: Transmitter Troubleshooting Setup

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting Transmitter Troubleshooting Setup Use the following sets of procedures to troubleshoot the transmitter using Phoenix. Due to the compact layout of the mobile terminal, some of the major test points are not accessible without destroying the shield frames and the LED lamp. To minimize effort, check the following in order: 1.
  • Page 13 6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting 5. Click the LOCAL button in the Phone State area to put the mobile terminal into Local Mode. Figure 7: Phone Control dialog box 6. Open the Troubleshooting menu, point to AMPS, and click AMPS Control.
  • Page 14 6265/6265i/6268 (RM-66) RF Description and Troubleshooting 12. Configure the spectrum analyzer using the following values: • Center Frequency = 836.52 MHz • Span = 100 MHz • Amplitude = 20 dBm • Attenuation = Auto • BW = Auto Table 1: RF PDM Values at Power Level 5...

  • Page 15: Cell Tx Setup

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Cell Tx Setup Use the following procedures to prepare for Cell Tx troubleshooting using Phoenix. 1. Connect an RF test connector to a call box. 2. Connect the mobile terminal to the PC via a test jig.
  • Page 16 6265/6265i/6268 (RM-66) RF Description and Troubleshooting Do NOT select this option Figure 11: CDMA Control dialog box for Cell Tx troubleshooting 9. Select the following values: State = Rho ON • Band = Cell • Radio Configuration = Mode 1: IS-95 Voice •...

  • Page 17: Pcs Setup

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Figure 12: RF PDM Control dialog box for Cell band 12. Click Read Phone to update the values. PCS Setup Use the following procedures to prepare for PCS Tx troubleshooting using Phoenix.
  • Page 18 6265/6265i/6268 (RM-66) RF Description and Troubleshooting 7. Select the following values on the RF Main Mode dialog box: Band = PCS (CDMA) • Channel = 600 • Mode = Rx/Tx • 8. Click Set. Note: Be sure that the “RF Main Mode set successfully” message appears in the status bar.

  • Page 19: Transmitter Rf Troubleshooting Procedures

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Figure 13: RF PDM Control dialog box for PCS band 14. Click Read Phone to update the values. Transmitter RF Troubleshooting Procedures After Phoenix is set up using either the AMPS, Cell, or PCS setup procedures, use the following steps to troubleshoot the transmitter.

  • Page 20: Failed Test: Tx Pa Detector

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting • If the SMD is okay, replace the N7000. 5. Probe the PA input. • If the level is low, look for an SMD issue on the Tx filter. • Reflow or replace the filter as necessary.

  • Page 21: Tx Output Spectrum

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Tx Output Spectrum Following is the correct output of the mobile terminal on a spectrum analyzer with 100MHz span. Note that if you are using the AAS-10 probe with the mobile terminal connected to the call box, the amplitude should be approximately -7dBm at the antenna test point on the top of the PWB.

  • Page 22: Tx Dc Test Points

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting Nokia Customer Care Tx DC Test Points Following are the Tx DC test points. Tx UHF LO Lock Voltage VR2: 2.76 V VR6: 2.8 V Iref_Pcs: 2.3-2.9 V VCC_PA: 0-4.6V 1.2 V PCS: 2.0 V @ <5dBm...

  • Page 23: Tx Rf Test Points

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Tx RF Test Points Following are the Tx RF test points of the PWB. PCS Frequency 1880 MHz PCS PDM: PA_DC_DC = 110 PA_Bias = 85 PCS TX IC out PCS PA in...

  • Page 24: Dc Test Points

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting DC Test Points Figure 18 shows the DC test points. VR5: 2.78 V (Rx) VR6: 2.78 V (Tx) VR2: 2.78 V (Tx) VIO: 1.8 V Vbatt: 3.2 to 4.7 V VR1B: 4.75V (Tx) VR1A: 4.75V...

  • Page 25: Receiver Rf Troubleshooting

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Receiver RF Troubleshooting The heart of the receiver is the Rx Front-end IC, which contains two LNAs and mixers. The other components are passive. There are two RF SAW filters for the Cell and PCS bands.

  • Page 26: Receiver Block Diagram

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting Nokia Customer Care Receiver Block Diagram Following is the Rx system block diagram. N7100 N7100 N7160 N7160 Figure 19: Receiver system block diagram ©2005 Nokia Corporation Page 26 Company Confidential Issue 1 11/2005...

  • Page 27: Receiver Schematics

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Receiver Schematics The following schematics are for general reference only. See the Schematics chapter for detailed versions. Cell RF SAW filter PCS RF SAW filter N7160 Rx front-end IC AMPS IF crystal filter...
  • Page 28 6265/6265i/6268 (RM-66) RF Description and Troubleshooting Nokia Customer Care Loop filter Rx LO lock voltage 1.2 to 1.7 Vdc Rx back-end IC Figure 21: Receiver schematic - 2 Rx Back-end ©2005 Nokia Corporation Page 28 Company Confidential Issue 1 11/2005...

  • Page 29: Rf Agc Status

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting RF AGC Status When configuring the values on the RF AGC Status dialog box, note the following: • The RF AGC status functionality only works in Call Mode. • In the PLL Lock Status area, bright green indicates a locked PLL and dark green indicates an unlocked PLL.

  • Page 30: Turning On The Rx Path

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting Turning on the Rx Path Use the following steps to turn on the Rx path using Phoenix. 1. On the Phone Control dialog box, click the LOCAL button in the Phone State area to put the mobile terminal into Local Mode.
  • Page 31 6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Figure 24: RF Main Mode dialog box for AMPS (top), Cell (middle), and PCS (bottom) ©2005 Nokia Corporation Issue 1 11/2005 Company Confidential Page 31...

  • Page 32: Switching The Rx Gain States

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting Switching the Rx Gain States Use the RF Gen I/O dialog box to switch the gain state (Hi and Lo) for CDMA and AMPS modes. High Gain State (default) Cell AMPS Low Gain State...

  • Page 33: Checking Amps From Rf To Iq

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Checking AMPS from RF to IQ Use the following steps to check the AMPS receiver functionality from RF to IQ output. 1. Start Phoenix in Local Mode with only the Rx path turned on.
  • Page 34 6265/6265i/6268 (RM-66) RF Description and Troubleshooting present on these test points. 881.53MHz 881.53MHz 10kHz 10kHz -15kHz -15kHz +15kHz +15kHz CH384 CH384 881.52MHz 881.52MHz AMPS Spectrum AMPS Spectrum AMPS Spectrum AMPS Spectrum RX_IN RX_IP RX_QN RX_QP Figure 27: AMPS spectrum and the test points on the top side of the PWB ©2005 Nokia Corporation...

  • Page 35: Checking Cdma Cell Receiver From Rf To Iq

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Checking CDMA CELL Receiver from RF to IQ Use the following values to check the Cell receiver functionality RF to IQ output. 1. Start Phoenix in Local Mode with only the Rx path turned on.
  • Page 36 6265/6265i/6268 (RM-66) RF Description and Troubleshooting Figure 29 shows the Cell spectrum and the test points located on the top side of the PWB. All four test points should be approximately equal. WARNING: Direct current is present on these test points.

  • Page 37: Checking Cdma Pcs Receiver From Rf To Iq

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Checking CDMA PCS Receiver from RF to IQ Use the following values to check the PCS receiver functionality from RF to IQ output. 1. Start Phoenix in Local Mode with only the Rx path turned on.

  • Page 38: Receiver Diagnostic Signal Tracing

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting CH610 CH610 1960.5MHz 1960.5MHz 500kHz 500kHz -615kHz -615kHz +615kHz +615kHz CH600 CH600 1960MHz 1960MHz CDMA PCS Spectrum CDMA PCS Spectrum CDMA PCS Spectrum CDMA PCS Spectrum RX_IN RX_IP RX_QN RX_QP Figure 31: PCS spectrum and the test points on the top side of the main PWB Receiver Diagnostic Signal Tracing Use the following steps to trace the receiver signal.

  • Page 39: Receiver Rf Test Points

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Receiver RF Test Points IFA_in (to RX FE RFIC) Cell CH384 (to RF SAW) 128.1MHz -15 dBm (HG) 881.52MHz -20 dBm (HG) Cell CH384 (from Duplexer) 128.1MHz -32 dBm (LG) 881.52MHz...

  • Page 40: Receiver If Test Points

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting Receiver IF Test Points IF VHF Lo 256.2 MHz AMPS_IF_P and N (to RX IC)128.1MHz AMPS IF (to MCF)128.1MHz IF VHF Lo 256.2 MHz CELL CH384 -17 dBm (HG) 2.5 dBm (When Locked) 2.5 dBm (When Locked) CELL –23 dBm...

  • Page 41: Receiver Dc Test Points

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Receiver DC Test Points Rx RF Lo Lock Voltage Rx RF Lo Lock Voltage 1.2 to 1.7 Vdc 1.2 to 1.7 Vdc VR4 = 2.79 VDC NOTE: There is no part installed on this probe point.

  • Page 42: Receiver Logic Input Voltages

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting Receiver Logic Input Voltages Measure logic levels for Rx Front-End (N7160). Figure 35 shows the receiver logic input voltages. Figure 35: Receiver logic input voltage test points Table 6 includes the logic levels for the N7160.

  • Page 43: Rx Front-End Receiver Troubleshooting

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Rx Front-End Receiver Troubleshooting Keep the following points in mind regarding the Rx Front-end receiver: • There is a separate LNA for 800MHz (Cell and AMPS) and 1900MHz (PCS). • There is a separate RFA (inside Rx Front-end IC) for 800MHz (Cell and AMPS) and 1900MHz (PCS).
  • Page 44 6265/6265i/6268 (RM-66) RF Description and Troubleshooting IMPORTANT: You must check for both conditions before replacing the chip. If you have no LO signal, refer to "UHF Synthesizer Troubleshooting" on page 56. If you have a significant supply voltage drop on one of the supply pins, then replace the Rx Front-end...

  • Page 45: Synthesizer Troubleshooting

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Synthesizer Troubleshooting Faulty synthesizers can cause both Rx and Tx failures during tuning, in addition to the VCTCXO tuning. However, first check for the presence of various LO signals and their proper levels.

  • Page 46: Synthesizer Block Diagram

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting Synthesizer Block Diagram Rx VHF LO 256.2MHz N7100 UHF LO 1009.62MHz (Cell ch. 384) 2088.1MHz (PCS ch. 600) N7160 N7200 Tx UHF LO 3395.88MHz 3819.90MHz D2800 N7000 Figure 37: Synthesizer block diagram ©2005 Nokia Corporation...

  • Page 47: Synthesizer Schematics

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Synthesizer Schematics The following schematics are for general reference only. See the Schematics chapter for detailed versions. VCTCXO with AFC control UHF PLL IC Loop filter components Figure 38: Synthesizer schematic ©2005 Nokia Corporation...

  • Page 48: Synthesizer Troubleshooting Setup

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting Synthesizer Troubleshooting Setup Use the following steps to troubleshoot the synthesizer using Phoenix: 1. On the Phone Control dialog box, click the LOCAL button in the Phone State area to put the mobile terminal into Local Mode.

  • Page 49: Incorrect Pll Frequencies

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Incorrect PLL Frequencies Following are some possible causes for incorrect PLL frequencies: • Power supplies to PLL portion • Control line to VCO • Loop filter or resonator components missing or incorrectly installed •...

  • Page 50: Vctcxo Troubleshooting

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting VCTCXO Troubleshooting • VCTCXO frequency is 19.2MHz. Without 19.2MHz, the mobile terminal does not power up. This signal goes to the N7100, N7000, D2800, and the UHF PLL. Check the test points in Figure 41 for the presence of the 19.2MHz signal.
  • Page 51 6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting VCTCXO: VCTCXO: 19.2 MHz clocks: 19.2 MHz clocks: -9 dBm -9 dBm to UHF PLL to UHF PLL CLK19M2_TIKU CLK19M2_TIKU to BB to BB F_REF_RX F_REF_RX to RX to RX Back-End IC...

  • Page 52: Afc Voltage Troubleshooting

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting AFC Voltage Troubleshooting Use the following steps to monitor the AFC voltage. 1. In Phoenix, open the RF PDM dialog box. Figure 42: RF PDM dialog box for AFC troubleshooting Figure 43 shows a partial schematic of the R7201.

  • Page 53: Vctcxo Manual Tuning

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting VCTCXO Manual Tuning The VCTCXO can be manually tuned to verify when a mobile terminal is tuned incorrectly or if mobile terminal cannot make a call. Monitor the RF signal at the mobile terminal’s output.
  • Page 54 6265/6265i/6268 (RM-66) RF Description and Troubleshooting Tx Output for CELL CH384 @ 25C Trace A Trace B Trace C Trace A 836.508200 MHz -18.8300 dBm Trace B 836.519550 MHz -18.8300 dBm Trace C 836.530450 MHz -18.6600 dBm -100 Centre: 836.520000 MHz Span: 30.000000 kHz...

  • Page 55: Uhf Synthesizer Schematic

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting UHF Synthesizer Schematic UHF PLL IC Dual band VCO Lock Voltage Loop filter components Figure 46: UHF Synthesizer Schematic ©2005 Nokia Corporation Issue 1 11/2005 Company Confidential Page 55...

  • Page 56: Uhf Synthesizer Troubleshooting

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting UHF Synthesizer Troubleshooting The UHF LO frequency varies with the channel and can be calculated using the Frequency Calculator dialog box in the Phoenix RF component. Use the following steps to troubleshoot the UHF LO frequency.

  • Page 57: Pcs Uhf Lo Ch600 Typical Spectrum

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting PCS UHF LO CH600 Typical Spectrum Offset TX VHF LO for PCS Band 50kHz Trace A Trace A 2.088100 GHz -10.6600 dBm Trace A 30.000000 kHz -84.3400 dB Trace A 50.000000 kHz -87.3400 dB...

  • Page 58: Cell Uhf Lo Ch384 Typical Spectrum

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting CELL UHF LO CH384 Typical Spectrum Offset 30kHz TX VHF LO for CELL Band Trace A Trace A 1.009620 GHz -5.5000 dBm Trace A Spur 30.000000 kHz -83.0000 dB -83dBc Trace A 50.000000 kHz -92.1600 dB...
  • Page 59 6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Rx VHF LO (Rx Back-End IC) Schematic Lock voltage Loop filter components PLL in Rx RFIC Resonator Figure 50: Rx UHF LO (Rx Front-End) schematic ©2005 Nokia Corporation Issue 1 11/2005...

  • Page 60: Rx Vhf Lo (Rx Back-End Ic) Troubleshooting

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting Rx VHF LO (Rx Back-End IC) Troubleshooting The VHF LO operates at a fixed frequency of 256.2MHz. It is the second LO for down- conversion to I and Q for baseband processing. Use the following steps to troubleshoot the VHF LO.

  • Page 61: Tx Uhf Lo Schematic

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Tx UHF LO Schematic The following partial schematic is for general reference only. See the Schematics chapter for complete detailed versions. Lock voltage Loop filter Figure 52: Tx UHF LO schematic ©2005 Nokia Corporation...

  • Page 62: Tx Uhf Lo (Tx Ic) Troubleshooting

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting Tx UHF LO (Tx IC) Troubleshooting There are two fixed LOs, 3296.16~3395.88MHz for cell band and 3700~3819.90MHz for PCS band. This is the first LO for up-conversion. Be sure to monitor the control voltage at R7001.

  • Page 63: Uhf Pcs Tx Lo (3700 ~ 3819.90)/2Mhz Typical Spectrum

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting UHF PCS Tx LO (3700 ~ 3819.90)/2MHz Typical Spectrum Chariot PCS TX LO Jupiter_PCS_LO/2 Jupiter_PCS_LO/2 1.88 GHz -4.11 dBm Jupiter_PCS_LO/2 50.00 kHz -59.93 dB Jupiter_PCS_LO/2 -50.00 kHz -56.54 dB -100 Start: 1.88 GHz Stop: 1.88 GHz...

  • Page 64: Uhf Cell Tx Lo (3296.16 ~ 3395.88)/4Mhz Typical Spectrum

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting UHF CELL Tx LO (3296.16 ~ 3395.88)/4MHz Typical Spectrum SoftPlot Measurement Presentation Jupiter CELL LO Jupiter CELL LO 836.52 MHz -1.61 dBm Jupiter CELL LO -30.00 kHz -65.83 dB Jupiter CELL LO -60.00 kHz -71.22 dB...

  • Page 65: Gps Troubleshooting

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting GPS Troubleshooting GPS RF Block Diagram Synthesizer Figure 56: GPS block diagram ©2005 Nokia Corporation Issue 1 11/2005 Company Confidential Page 65...

  • Page 66: Gps Rf Schematic

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting Nokia Customer Care GPS RF Schematic The following schematic is for general reference only. See the Schematics chapter for a detailed version. GPS TCXO GPS RF chip RF input GPS LNA 2nd RF filter...

  • Page 67: Gps Troubleshooting Setup

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting GPS Troubleshooting Setup Use the following steps to set up GPS signal using Phoenix. 1. On the Phone Control dialog box, click the LOCAL button in the Phone State area to put the mobile terminal into Local Mode. (See...

  • Page 68: Hw Self Test Failure

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting Figure 59: GPS Control dialog box 5. In the Test State field, ensure that Galvanic is selected. 6. Click select Start test. HW Self Test Failure If the test fails, repeat steps 1—6. If the test fails again, continue with the following self- test failure troubleshooting: 1.

  • Page 69: Gps Dc Test Points

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting GPS DC Test Points VDD_IO_GPS: 1.8 V TCXO Vcc: 2.8 V VRF_GPS: 2.8 V Figure 60: GPS DC test points ©2005 Nokia Corporation Issue 1 11/2005 Company Confidential Page 69...

  • Page 70: Gps Rf Troubleshooting Setup

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting GPS RF Troubleshooting Setup Use the following steps to troubleshoot the GPS receiver. 1. On the GPS Control dialog box, select Receiver On. 2. Click Execute. Figure 61: Turning on the GPS receiver on the GPS Control dialog box 3.

  • Page 71: Gps Rf Test Points

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting GPS RF Test Points All points are 1575.52 MHz, except TCXO GPS TCXO 16.368 MHz GPS TCXO out 16.368 MHz -3 dBm First RF filter in -62 dBm First RF filter out...

  • Page 72: Fm Radio Troubleshooting

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting Nokia Customer Care FM Radio Troubleshooting FM Radio Schematic The following schematic is for general reference only. See the Schematics chapter for a detailed version. Loop filter and VCO Audio output FM antenna matching...

  • Page 73: Fm Radio Testing - Pop-Porttm Headset And Uhj Headset

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting FM Radio Testing - Pop-port Headset and UHJ Headset Use the following steps to troubleshoot the FM radio while using a Pop-port headset. 1. Connect the Pop-port headset (HDS-3) to the Pop-port connector (bottom connector).

  • Page 74: Fm Radio Parts Layouts

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting FM Radio Parts Layouts FM Antenna matching components FM audio RF N6100 de-coupling caps FM Radio IC FM Audio output coupling caps Main PCB Bottom Side Figure 64: FM radio parts layout ©2005 Nokia Corporation...

  • Page 75: Fm Radio Test Points

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting FM Radio Test Points Use the following values when probing the LO near the VCO of the FM radio IC (N6100). Figure 65 for the location of the N6100. Table 9: FM Radio Test Point Values...

  • Page 76: Bluetooth Troubleshooting

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting Nokia Customer Care Bluetooth Troubleshooting Bluetooth Schematic The following schematic is for general reference only. See the Schematics chapter for a detailed version. Bluetooth ASIC (N6000) SAW filter Bluetooth antenna strip Supply line filtering Figure 66: Bluetooth schematic ©2005 Nokia Corporation...

  • Page 77: Bluetooth Troubleshooting

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Bluetooth Troubleshooting Use the following test steps to troubleshoot the Bluetooth component in Phoenix: Test Setup 1 • Under the BT/WLAN menu, select Bluetooth Locals. • If the Phoenix connection to the mobile terminal’s BT ASIC is ok, text such as “MCM Software”, “MM Software”...

  • Page 78: Test Setup 2

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting Test Setup 2 • After obtaining the version information, select Run to do a quick check on the BT ASIC. • The results of each self-test is displayed in the Self Tests window. If any test fails, BT ASIC is not working properly.

  • Page 79: Test Setup 3

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Test Setup 3 • After passing the self-test, setup the JBT-3, JBT-9 or a later version BT box. • Key in the BT box’s Device address into the Counterpart BT Device Address window.

  • Page 80: Test Setup 4

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting Test Setup 4 • If the mobile terminal’s BT sensitivity is not good or the setup is not calibrated (correlated) correctly, the %BER > 0.1% which results in an error. • Make sure the setup is good (correlated with a golden mobile terminal), then see Item 2 in "Bluetooth...

  • Page 81: Test Setup 5

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Test Setup 5 If the mobile terminal is placed too far or the BT Tx or the Rx has problem, one of the following error messages is visible. (See Item 2 of "Bluetooth...

  • Page 82: Bluetooth Troubleshooting Flowchart

    6265/6265i/6268 (RM-66) RF Description and Troubleshooting Nokia Customer Care Bluetooth Troubleshooting Flowchart Replace BT ASIC (N6000) when a particular row is still not ok at the end of a branch. C7204 is on the synthesizer block Figure 67: Bluetooth flowchart ©2005 Nokia Corporation...

  • Page 83: Bluetooth Dc And Rf Test Points

    6265/6265i/6268 (RM-66) Nokia Customer Care RF Description and Troubleshooting Bluetooth DC and RF Test Points Figure 68 shows the bluetooth DC and RF test points. VDDA VBAT VDDA1 DC bias for the front-end Bluetooth ASIC SAW filter VLDO_OUT Figure 68: Bluetooth DC and RF test points ©2005 Nokia Corporation...
  • Page 84 6265/6265i/6268 (RM-66) RF Description and Troubleshooting Nokia Customer Care This page intentionally left blank. ©2005 Nokia Corporation Page 84 Company Confidential Issue 1 11/2005...

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