Nokia RM-14 Rf Troubleshooting And Manual Tuning
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Nokia RM-14 Rf Troubleshooting And Manual Tuning

Nokia RM-14 Rf Troubleshooting And Manual Tuning

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Nokia Customer Care
6(b) - RF Troubleshooting
Instructions
6(b) RF Troubleshooting
and Manual Tuning
ISSUE 1 11/04
Copyright © 2004 Nokia. All Rights Reserved.

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  • Page 1 Nokia Customer Care 6(b) - RF Troubleshooting Instructions 6(b) RF Troubleshooting and Manual Tuning ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 2 RM-14 Nokia Customer Care RF Troubleshooting and Manual Tuning [This page left intentionally blank] COMPANY CONFIDENTIAL ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 3: Table Of Contents

    Bluetooth / FM Radio Troubleshooting ............16 Bluetooth troubleshooting ................17 FM radio troubleshooting ................. 18 Service Tool Concept for RF Tunings ............. 19 Service concept for RM-14 RF tunings ............20 Receiver Tunings....................21 RX channel select filter calibration..............21 RX calibration....................22 EGSM900 band .....................
  • Page 4 Fig 10 RX 1800 troubleshooting................14 Fig 11 RX 1900 troubleshooting................15 Fig 12 Bluetooth/FM ....................16 Fig 13 Bluetooth troubleshooting ................17 Fig 14 FM radio troubleshooting ................18 COMPANY CONFIDENTIAL ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 5: Introduction

    Nokia Customer Care Introduction This document is the troubleshooting guide for RM-14. On the following pages you will find a step-by-step fault finding procedure and reference measurements at the relevant signal points. Note! Most test points are not accessible unless shielding cans are cut open.

  • Page 6: Helgo / Synthesizer Troubleshooting

    RM-14 Nokia Customer Care RF Troubleshooting and Manual Tuning Helgo / Synthesizer Troubleshooting Figure 1:Helgo/Synthesizer Figure 2:PA/TX COMPANY CONFIDENTIAL ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 7: N500 Helgo Troubleshooting

    - RfBusClk at J501 - RfBusEna1 at J502 - Reset at J503 - RfBusData at J509 All measured in Burst Mode Logic high level = 1,8V. Check baseband. ISSUE 1 11/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.

  • Page 8: Synthesizer Troubleshooting

    VCO does not work or = 2.8 V OK ? the control loop is open Replace VCO Check C503, R501, R502, Check R502, C503, C504 C504, C505 R501 and C502 COMPANY CONFIDENTIAL ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 9: Tx Troubleshooting

    RM-14 RF Troubleshooting and Manual Tuning Nokia Customer Care Tx Troubleshooting Figure 3:Helgo/Synthesizer Figure 4:PA/TX ISSUE 1 11/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.

  • Page 10: Tx 900 Gmsk Troubleshooting

    Measure Z800 antenna switch control signal voltages a) VANT_1 = 2.7 V at C811 b) VANT_2 = 0 V at C809 c) VANT_3 = 2.7 V at C810 COMPANY CONFIDENTIAL ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 11: Tx1800/1900 Gmsk Troubleshooting

    Measure Z800 antenna switch control signal voltages a) VANT_1 = 0 V at C811 b) VANT_2 = 2.7 V at C809 c) VANT_3 = 2.7 V at C810 ISSUE 1 11/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.

  • Page 12: Rx Troubleshooting

    RM-14 Nokia Customer Care RF Troubleshooting and Manual Tuning Rx Troubleshooting Figure 7:Helgo/Synthesizer Figure 8:PA/TX COMPANY CONFIDENTIAL ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 13: Rx 900 Troubleshooting

    VANT_1 = 0V (C811) b) VANT_2 = 0V (C809) c) VANT_3 = 0V (C810). go to “Helgo/Synthesizer troubleshooting” Measure RF level = -55 dBm at Helgo input (C808, both terminals). ISSUE 1 11/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.

  • Page 14: Rx 1800 Troubleshooting

    VANT_1 = 0V (C811) b) VANT_2 = 0V (C809) c) VANT_3 = 0V (C810). go to “Helgo/Synthesizer troubleshooting” Measure RF level at Helgo input (C807, not assembled, both terminals). COMPANY CONFIDENTIAL ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 15: Rx 1900 Troubleshooting

    Measure a) V800 LNA supply voltage LNA_P = 2.8 V (V800 pin 4) and b) LNA control voltage LNAB_P = 2,8 V (R801) Measure RF level at N500 Helgo input (L807). ISSUE 1 11/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.

  • Page 16: Bluetooth / Fm Radio Troubleshooting

    RM-14 Nokia Customer Care RF Troubleshooting and Manual Tuning Bluetooth / FM Radio Troubleshooting Figure 12:Bluetooth/FM COMPANY CONFIDENTIAL ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 17: Bluetooth Troubleshooting

    Measure RF level = -15 dBm at a TX_A and TX_B, Check L6031, L6032. If passive componen (C6046) at both terminals OK, replace N6030 Measure RF level = -18 dBm at Z6030 SAW filter output. Replace Z6030 ISSUE 1 11/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.

  • Page 18: Fm Radio Troubleshooting

    Measure CPOUT voltage = 0.9 V @ 100 MHz (C6162). R6160, C6162 and C6157 Visual inspect C110, C111 and L1103 Measure RF level at antenna input (C6176). (all bottom side) and C6179, C6176, C6178 and L6176 COMPANY CONFIDENTIAL ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 19: Service Tool Concept For Rf Tunings

    Nokia Customer Care Service Tool Concept for RF Tunings All RF tunings for RM-14 phones must be carried out in MJ-34 Module Jig. Power to MJ-34 should be supplied from an external DC power supply, not FPS-8 prommer. MJ-34 input voltages: •...

  • Page 20: Service Concept For Rm-14 Rf Tunings

    RM-14 Nokia Customer Care RF Troubleshooting and Manual Tuning ■ Service concept for RM-14 RF tunings Table 1: Item Type Description Product code MJ-34 Module jig 0780346 PCS-1 DC power cable 0730012 XRF-1 Modular cable 0730085 DAU-9S Service MBUS cable...

  • Page 21: Receiver Tunings

    If the “Save to Phone” tick box is not checked, the values are not saved to the phone when you stop the tuning or exit the dialog. Tuning values should be 0…31. Select “Stop”. Close the “RX Channel Select Filter Calibration“ dialog to end tuning. ISSUE 1 11/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.

  • Page 22: Rx Calibration

    AFC tuning is carried out while EGSM (GSM900) band RX Calibration is performed. Remember to take jig and cable attenuations into account! Select Tuning => Rx calibration EGSM900 band Press "Start" to begin. COMPANY CONFIDENTIAL ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 23 RSSI 1 RSSI 2 RSSI 3 RSSI 4 RSSI 5 RSSI 6 RSSI 7 RSSI 8 RSSI 9 RSSI 10 RSSI 11 RSSI 12 RSSI 13 RSSI 14 ISSUE 1 11/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.

  • Page 24: Gsm1800 Band

    RSSI 1 RSSI 2 RSSI 3 RSSI 4 RSSI 5 RSSI 6 RSSI 7 RSSI 8 RSSI 9 RSSI 10 RSSI 11 RSSI 12 RSSI 13 RSSI 14 COMPANY CONFIDENTIAL ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 25: Gsm1900 Band

    RSSI 1 RSSI 2 RSSI 3 RSSI 4 RSSI 5 RSSI 6 RSSI 7 RSSI 8 RSSI 9 RSSI 10 RSSI 11 RSSI 12 RSSI 13 RSSI 14 ISSUE 1 11/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.

  • Page 26: Rx Band Filter Response Compensation

    You will be asked to supply 9 different RF frequencies to the phone on each band. The tuning begins from EGSM900 band and continues the same way for GSM1800 and GSM1900 bands. COMPANY CONFIDENTIAL ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 27: Egsm900 Band

    Nokia Customer Care EGSM900 band Set first required frequency and level => OK Set 2nd required frequency and level => OK Set 3rd required frequency and level => OK ISSUE 1 11/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 28 RF Troubleshooting and Manual Tuning Set 4th required frequency and level => OK Set 5th required frequency and level => OK Set 6th required frequency and level => OK COMPANY CONFIDENTIAL ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 29 Set 7th required frequency and level => OK Set 8th required frequency and level => OK Set 9th required frequency and level => OK Tuning values and ADC readings will be shown. ISSUE 1 11/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.

  • Page 30: Gsm1800 Band

    Typical values and limits in Rx Band Filter Response Compensation GSM1800: Table 6: Input Typical value Low limit High limit Channel frequency [dB] [dB] [dB] [MHz] 1802.2677 1805.2677 1809.8677 1824.0677 1842.8677 1861.0677 COMPANY CONFIDENTIAL ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 31: Gsm1900 Band

    Typical values and limits in Rx Band Filter Response Compensation GSM1900: Table 7: Input Typical value Low limit High limit Channel frequency [dB] [dB] [dB] [MHz] 1927.0677 1930.2677 1935.2677 1945.0677 1960.0677 1975.0677 1986.6677 1989.8677 1994.8677 ISSUE 1 11/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 32 Nokia Customer Care RF Troubleshooting and Manual Tuning Tuning will be completed when you press “Save & Continue”. Close the “RX Band Filter Response Compensation” dialog to end tuning. COMPANY CONFIDENTIAL ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 33: Transmitter Tunings

    • GSM1900 PA High Mode with EDGE off • GSM1900 PA High Mode with EDGE on Select Tuning => Tx power level tuning Remember to take jig and cable attenuations into account! ISSUE 1 11/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.

  • Page 34: Egsm900 Pa High Mode With Edge Off

    The tuned power level can be chosen by using up and down arrows or mouse. The current power level is shown with inverse colors. The tuning value can be adjusted with “-“ and “+” keys. COMPANY CONFIDENTIAL ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 35: Egsm900 Pa High Mode With Edge On

    When tuning values are correct, choose “Save & Continue”. If all coefficients are within specified limits, tuning will continue on the EGSM900 PA low mode with EDGE on. ISSUE 1 11/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.

  • Page 36: Gsm1800 Pa High Mode With Edge Off

    If all coefficients are within specified limits, tuning will continue on the GSM1800 PA high mode with EDGE on. Typical values: Table 10: Power level GSM1800 EDGE off 0.600 … 0.750 0.130 … 0.190 0.110 … 0.150 Base 0.090 … 0.130 COMPANY CONFIDENTIAL ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 37: Gsm1800 Pa High Mode With Edge On

    0.260 … 0.360 0.240 … 0.330 0.220 … 0.310 0.210 … 0.300 0.200 … 0.280 0.180 … 0.260 0.170 … 0.250 0.160 … 0.240 Base 0.090 … 0.160 ISSUE 1 11/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.

  • Page 38: Gsm1900 Pa High Mode With Edge Off

    If all coefficients are within specified limits, tuning will continue on the GSM1900 PA high mode with EDGE on. Typical values: Table 12: Power level GSM1900 EDGE off 0.600 … 0.750 0.130 … 0.190 0.110 … 0.150 Base 0.090 … 0.130 COMPANY CONFIDENTIAL ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 39: Gsm1900 Pa High Mode With Edge On

    0.090 … 0.160 If values shown are within limits select “Save & Continue”, values are saved to phone memory. Close the “TX Power Level Tuning” dialog to end tuning. ISSUE 1 11/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.

  • Page 40: Tx I/Q Tuning

    Set spectrum analyzer to required settings => OK The tuning is carried out by setting each of the sliders to desired value. The sliders can be changed only when the tuning is ongoing. COMPANY CONFIDENTIAL ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 41 Tune LO leak to minimum with TXI/TXQ DC offset control (f0 on spectrum analyzer screen). Tune the wrong sideband to minimum using Amplitude/Phase difference controls (f0+68kHz on spectrum analyzer screen). Table 14: Before tuning After tuning ISSUE 1 11/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.

  • Page 42: Egsm900 Band With Edge On

    Repeat the same tuning steps as for the EGSM900 band above. Tuning will automatically move to the next step, EGSM1900 with EDGE on when you press “Save & Continue”. COMPANY CONFIDENTIAL ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 43: Gsm1900 Band With Edge On

    Repeat the same tuning steps as for the EGSM900 band above. Tuning will be completed when you press “Save & Continue”. Choose “OK” to close the “TX I/Q Tuning” dialog. ISSUE 1 11/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 44 RM-14 Nokia Customer Care RF Troubleshooting and Manual Tuning [This page left intentionally blank] COMPANY CONFIDENTIAL ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.

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