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Nokia Customer Care

RH-47 Series Cellular Phones

Company Confidential

7 - RF Description and

Troubleshooting

Summary of content (76 pages)

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Nokia Customer Care Company Confidential RH-47 7 - RF Description and Troubleshooting Table of Contents Page No Abbreviations ............................................................................................................................................ 5 Introduction to RF ................................................................................................................................... 6 RF power supply configuration .........................................................
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Nokia Customer Care Company Confidential RH-47 7 - RF Description and Troubleshooting APPENDIX C: Component Placement with Test Points & Detailed Description.................. 59 APPENDIX D: Calibration of the DA-17/JXS-2 jig, Autotuning and BT Testing .................. 65 Requirements .......................................................................................................................................65 Calibration Problems ...............................................................
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Nokia Customer Care Company Confidential RH-47 7 - RF Description and Troubleshooting Abbreviations BB Baseband PCS GSM1900 GSM GSM850 ESD Electro Static Discharge GPRS General Packed Radio Service HSCSD High Speed Circuit Switched Data LNA Low Noise Amplifier LO Local Oscillator PA Power Amplifier PWB Printed Wired Board PLL Phase Locked Loop RF Radio Frequency RX Receiver SA Spectrum Analyzer TX Transmitter VCO Voltage Controlled Oscillator Issue 1 05/04 Copyright © 2004
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Introduction to RF The RF front-end is a dual-band direct conversion transceiver. Using direct conversion, no intermediate frequencies are used for up- or down -conversions. The VCO oscillates on the doubled respectively quadruplicated frequency of the wanted RX or TX frequency, depending on the band used. The VCO frequency is divided by either 2 or 4 and fed to the mixers (down-conversion) or modulators (up-conversion).
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care Figure 1: RF frequency scheme 869 - 894 MHz I RX Q 1930 - 1990 MHz F/4 F F/2 F 3296 - 3980 MHz PLL 26 MHz F F/2 F F/4 824 - 849 MHz Xtal 26 MHz BB clk I TX Q 1850 - 1910 MHz Mjoelner Issue 1 05/04 Copyright © 2004 Nokia Corporation Company Confidential Page 7
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care RF power supply configuration All power supplies for the RF Unit are generated in the UEM IC (D190). All RF supplies can be checked either in Mjoelner or in BB chamber. The power supply configuration used is shown in the block diagram below. Values of voltages are given as nominal outputs of UEM. Currents are typical values.
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care General specifications of transceiver RH-47 Page 10 Parameter Unit Cellular System GSM850, GSM1900 RX Frequency Band GSM850: 869 … 894 MHz GSM1900: 1930 … 1990 MHz TX Frequency Band GSM850: 824 … 849 MHz GSM1900: 1850 … 1910 MHz Output Power GSM850: +5 … +33 dBm (3.2 mW … 2 W) GSM1900: +0 … +30 dBm (1.
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Nokia Customer Care Company Confidential RH-47 7 - RF Description and Troubleshooting Introduction to RF Troubleshooting This document shall provide instructions, how to check, repair and calibrate RH-47 phones. It is assumed, that the phones are disassembled and tested within a repair jig MJ-21. The following types of measurements have to be done for repair of the phone boards: • RF measurements are made by using a Spectrum Analyzer together with a highfrequency probe (i.e.
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Printed Wired Board RF key component placement Figure 4: RF key component placement Page 12 Description / Part Code Manufacturer’s code NMP Code Supplier Dual band PA (N801) PF08130B-TB 4350403 Renesas Mjölner RF ASIC F7 (N601) 4380013 Infineon BT202i (N430) 0700085 Murata UHF VCO (G701) ENFVJSW2S08 4350431 Matsushita UHF VCO Balun (T702) LDB213G6010C-001 4550187 Murata 1900 Tx Balun (T701) LDB21
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care 1900 Rx SAW (Z603) 4511325 Murata 850 Tx SAW (Z701) 4511317 Murata 850 Rx SAW (Z604) 4511323 Murata Antenna switch (Z601) LMZ0170 4510449 Murata Crystal (B601) TSX-8A-25850 4510337 Toyocom Tx Coupler (L801) LDC21836M19D-185 4550197 Murata Tx850 buffer (V802) BFR949T-E6327 4210171 Infineon RF test points The RF power supplies are generated in the UEM and can be measured either in the Mjoelner chamb
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Test points RF supply voltages Page 14 Copyright © 2004 Nokia Corporation Company Confidential Issue 1 05/04
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care RF test points Mjoelner chamber RF test points VCO chamber Issue 1 05/04 Copyright © 2004 Nokia Corporation Company Confidential Page 15
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care RF test points PA chamber Test points BB area J203 TXQD J201 RXQD J202 TXID J200 RXID Page 16 Copyright © 2004 Nokia Corporation Company Confidential Issue 1 05/04
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Nokia Customer Care Company Confidential RH-47 7 - RF Description and Troubleshooting Receiver Troubleshooting General instructions for RX troubleshooting Connect the phone to a PC with Phoenix dongle PKD-1CS and DAU-9S cable (RS232). Follow the instructions below. Connect the phone to a power supply (DC voltage of 3.6V) and an RF signal generator.
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care The setup should now look like this: 4 Make the following settings on your signal generator: Frequencies: GSM850: set) 881.66771 MHz (channel 190 + 67.710kHz off- GSM1900: set) 1960.06771 MHz(channel 661 + 67.710kHz off- RF power level: – 80dBm @ the antenna connector of the phone (remembering to compensate for the cable and jig attenuation). 5 In RSSI reading, click Read now.
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care Select Maintenance Testing RF Controls Alt-M T F Wait until the RF Controls window pops up. 3 In the RF Controls window: Select Band Active unit Operation mode RX/TX Channel Select Maintenance Testing GSM850 or GSM1900 RX Burst 190 or 661 SNR Measurement Select Alt-M T M Both (Radio Button) The setup should now look like this: 4 Press the Start button.
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care the generator as instructed in the window. Take care for external cable and test jig attenuation losses. 7 Switch off the external RF signal as instructed in the next pop-up window. 8 Press OK and read the SNR result.
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Nokia Customer Care Select Company Confidential RH-47 7 - RF Description and Troubleshooting Band Active unit Operation mode RX/TX Channel GSM850 or GSM1900 RX Continuous 190 or 661 Please refer to the fault-finding chart and Appendix C for proper levels at different test points. Measuring analogue RX I/Q signals using oscilloscope Measuring with an oscilloscope on “RXIINN” or “RXQINN” is recommended only if RSSI reading does not provide enough information.
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care receiver is working properly: Receiver troubleshooting The phone layout has dedicated test points for the analogue differential RX I and Q signals (RXIINP, RXIINN, RXQINP, RXQINN) from Mjoelner RF ASIC to UEM. The BB part is used to measure those signals by means of RSSI reading. It is assumed that correct calibration of RSSI reading has been carried out in production.
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care 2 Check if SNR reading is OK. Use an Oscilloscope to check levels of “RXIINN” and “RXQINN”.
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care VRX VDDRXBB VDDRXF Figure 5: Rx signal paths Rx supply filter LNA Bias SAW BIQUAD INPL RX850 RX INML LNA RXIP Pre-gain RXIM BBAMP LPF1 DCN1 AGC LPF2 DCN2 Ant Switch GSM TX BIQUAD INPM RX RX1800 INMM LNA RXQM BBAMP PCN 2 SAW 2 2 2 LPF1 DCN1 AGC LPF2 DCN2 INPH TX RX1900 INMH LNA VDDLO VANTL / VANTM 2 RXQP Pre-gain VDDDIG 1/2 1/4 2 VANTH RF Controls VDDRXBB RF Controls Mjølner
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care RX paths of Mjoelner RF ASIC The balanced RX signal is amplified by the integrated LNA and the subsequent pre-gain stage. After amplification the RX signal is down-converted. The RX paths of Mjoelner RF ASIC consist of following sub units: Separate LNAs for each of the two bands: GSM850 and GSM1900. Two PRE-GAIN amplifiers, one for GSM850 and one for GSM1900.
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Transmitter General instructions for TX troubleshooting Connect an RF cable between the test jig and the measurement equipment (GSM test equipment, power meter, spectrum analyzer, or similar). Make use of an adequate attenuator at the input of your measurement equipment (10dB to 20dB are recommended for a spectrum analyzer or a power meter). Assure not to overload or destroy the equipment.
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care Figure 6: Transmitter signal paths VANTL / VANTH VDDDIG 3 RF Controls VB_DET VTXLOL VTXLOH 1/4 1/2 VDDRXBB RF Controls VTXBH VTXBL PCS An t S wit ch Dir.
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Antenna switch (TX/RX switch) The antenna switch operates as a diplexer for the RX and TX signals. Moreover, it suppresses the TX harmonics generated by the PA. The antenna switch is controlled by the Mjoelner RF ASIC using the control signals VC1 and VC2. The following table shows the possible different states.
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Nokia Customer Care Company Confidential RH-47 7 - RF Description and Troubleshooting The setup should now look like this: Now the measurement equipment should detect the following output signal of the phone: Pout = +23 ± 1dBm @ 836.6 MHz If this is not the case, then go to the next chapter for troubleshooting. Troubleshooting for GSM850 transmitter In the following troubleshooting chart, the TXP signal is used as a trigger-signal.
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Use Phoenix to select TX_Data Type: "1" or "0" TX Power Level: 10 Yes Oscilloscope R612 C627 C717 C623 J614 Yes Oscilloscope R715 TXIOUTP R715 TXIOUTN R716 TXQOUTP R716 TXQOUTN VREF1 VR2 TXP VR5 VR3 Yes Oscilloscope R823 C641 (NF) VTXB_850 VC1 VC2 C640 (NF) C803 Yes Spectrum Analyzer R828 PA input VBD PA Input GSM850 Yes Use Phoenix to select TX_Data Type: Random TX Power Level: 10 Yes Spectrum analyzer L801 (B1_in) (PA N801 Po
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care GSM1900 (PCS) transmitter General instructions for GSM1900 TX troubleshooting Start the investigations as described in chapter General instructions for TX troubleshooting “General instructions for TX troubleshooting”. 1 Set operating mode to local mode: Select Maintenance Testing RF Controls Wait until the RF Controls window pops up.
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Troubleshooting for GSM1900 transmitter In the following troubleshooting chart, the TXP signal is used as a trigger-signal. For this purpose a TXP test point is provided on the PWB, refer to RF test points in the Mjoelner chamber.
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care Use Phoenix to select TX_Data Type: "1" or "0" TX Power Level: 5 Yes Oscilloscope R612 C627 C717 C623 J614 Yes Oscilloscope VREF01 VR2 R715 TXIOUTP R715 TXIOUTN R716 TXQOUTP R716 TXQOUTN TXP VR5 VR3 Vdc = Vdc = V = Vdc = Vdc = 1.35 Volt 2.78 Volt 1.8 Volt 2.78 Volt 2.78 Volt 67kHz Vac = 0.4 Vpp, Vdc = 1.1 V 67kHz Vac = 0.4 Vpp, Vdc = 1.1 V 67kHz Vac = 0.4 Vpp, Vdc = 1.1 V 67kHz Vac = 0.4 Vpp, Vdc = 1.
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Figure 7: Example for TXP and TXC signal waveform (PCS1900 @ PL19) Page 34 Copyright © 2004 Nokia Corporation Company Confidential Issue 1 05/04
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care Synthesizer One PLL synthesizer is generating all the required frequencies of both bands for Rx and Tx. The VCO frequency is divided by 2 or by 4 in Mjoelner depending on the active band. General instructions for synthesizer troubleshooting Connect the phone to a PC with DAU-9S cable (RS232). The PC must have Phoenix Service Software installed and a PKD-1CS dongle is required.
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care The setup should now look like this: The frequency of 3920MHz at the output of the VCO (G701) has to be measured with an RF probe and a spectrum analyzer. The tuning voltage can be easily measured at the VC input of the VCO (C712) The tuning voltage should be 3.2 .. 3.4V at fVCO = 3920.0MHz. The tuning sensitivity of the VCO is typically 240MHz/V.
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Nokia Customer Care Company Confidential RH-47 7 - RF Description and Troubleshooting necessary AFC value is written into the RefOSCAFC register in Mjoelner. VCO The VCO is able to generate frequencies in the range of 3296.8 MHz to 3979.6 MHz when the PLL is working properly. The frequency of the VCO signal is divided by 2 or by 4 in Mjoelner RF-ASIC. This allows the generation of all the frequencies in the GSM850 and the GSM1900 bands, both RX and TX.
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care Frequency lists GSM850 Channel TX RX TX VCO RX VCO Channel TX RX TX VCO RX VCO 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 824,2 824,4 824,6 824,8 825 825,2 825,4 825,6 825,8 826 826,2 826,4 826,6 826,8 827 82
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RH-47 Company Confidential 7 - RF Description and Troubleshooting GSM1900 CH 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 TX 1850,2 1850,4 1850,6 1850,8 1851,0 1851,2 1851,4 1851,6 1851,8 1852,0 1852,2 1852,4 1852,6 1852,8 1853,0 1853,2 1853,4 1853,6 1853,8 1854,0 1854,2 1854,4 1854,6 1854,8 1855,0 1855,2 1855,4 1855,6
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 1861,8 1862,0 1862,2 1862,4 1862,6 1862,8 1863,0 1863,2 1863,4 1863,6 1863,8 1864,0 1864,2 1864,4 1864,6 1864,8 1865,0 1865,2 1865,4 1865,6 1865,8 1866,0 1866,2 1866,4 1866,6 1866,8 1867,0 1867,2 1867,4 1867,6 1867,8 1868,0 1868,2 1868,4 1868,6 1868,8 1941,8 1942,0 1942,2 1942,
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care DC Supply Current Check For a quick check of DC power supplies refer to the diagram below. Voltage drops are measured at the respective resistors pads. Note, that not all currents can be checked in such a way, see the marking (not applicable) in the diagram.
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Nokia Customer Care Company Confidential RH-47 7 - RF Description and Troubleshooting Phoenix Tunings after Repairs The following tunings have to be performed after repairs: • Repairs in the TX part require "TX Power Level Tuning". • When component replacements around the modulator area (RF path from UEM via RF ASIC to RF PA) have been done, "TX IQ Tuning" is additionally required. • In RX general repairs, front-end always require "RX Calibration" and “Rx Band Filter Calibration” for all three bands.
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care APPENDIX A: FLALI Test Cases with Hints for Repair testplan aquarius_335 (Flali) Step Nr.
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care 74 Check_Channel_Select_Filte r_VIPP 8000 20000 ADC x most likely cause is defect N601 Mjölner 75 Check_Channel_Select_Filte r_VQPP 1700 4000 ADC x also check all supply voltages to N601 Mjölner and check RFDATABus functionality Tuning_GSM850_Rx Action 29 Check_GSM850_RSSI_3 75 85 ADC x Check GSM850 RX path (Z601, Z604 etc.) Heat solder joints. If RSSI 6-10 dB too low, change Z604.
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RH-47 Company Confidential 7 - RF Description and Troubleshooting 48 Nokia Customer Care Check_GSM1900_RSSI_6 94 104 ADC Zocus_Calibration 0 255 ADC Check_Zocus_Cal_Current -503 -497 mA Calibrate_GSM850_Rx_Filte r Action 54 Check_GSM850_Rx_Filter_F irst -6 2 55 Check_GSM850_Rx_Filter_ N1 -3 56 Check_GSM850_Rx_Filter_ N2 57 51 MainSequence 52 53 x If one of the steps 5462 fails, change RX850 SAW Z604 dB x Also consider the RF calibration of the FLALI 1 dB x -3 1 dB x
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Nokia Customer Care Company Confidential RH-47 7 - RF Description and Troubleshooting 70 Check_GSM1900_Rx_Filter _N6 -3 1 dB x 71 Check_GSM1900_Rx_Filter _N7 -3 1 dB x 72 Check_GSM1900_Rx_Filter _N8 -6 2 dB x Set_SA_GSM850_Base_leve l_Tuning Action 77 Tune_GSM850_Base_Level -35 -25 78 Check_GSM850_Base_Level _Coef 0,1 0,2 79 Set_SA_GSM850_Tx_Power _Tuning 80 76 Seq_Tune_GSM8 50_Tx_Power x If one of the steps 7798 fails check the TX850 path from modulator dBm x output t
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RH-47 Company Confidential 7 - RF Description and Troubleshooting 105 Check_GSM1900_Tx_Coeff 0 0,75 Measure_GSM1900_MID_C h_Levels Action 107 Check_GSM1900_MID_Ch_ Tx_Lev0 28,5 30,50 dBm x 122 Check_GSM1900_MID_Ch_ Tx_Lev15 -3 3 dBm x Set_SA_GSM850_TX_IQ_Tu ning Action 124 Tune_GSM850_I_DC_Offset -6 6 mV x 125 Tune_GSM850_Q_DC_Offse t -6 6 mV x 126 Tune_GSM850_I_DC_Offset _2 -6 6 mV x 127 Tune_GSM850_Q_DC_Offse t_2 -6 6 mV x 128 Tune_GSM850_IQ_Phase_Di fference 7
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Nokia Customer Care Company Confidential RH-47 7 - RF Description and Troubleshooting 136 Tune_GSM1900_Q_DC_Offs et -6 6 mV x 137 Tune_GSM1900_I_DC_Offse t_2 -6 6 mV x 138 Tune_GSM1900_Q_DC_Offs et_2 -6 6 mV x 139 Tune_GSM1900_IQ_Phase_ Difference 70 110 deg x 140 Tune_GSM1900_IQ_Amplit ude_Difference -1,2 1,2 mV x 141 Tune_GSM1900_IQ_Phase_ Difference_2 70 110 deg x 142 Measure_GSM1900_TX_IQ Action 143 Check_GSM1900_TX_IQ_f0 -120 -35 dBc x 144 Check_GSM1900_T
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care APPENDIX B: FINUI Test Cases with Hints for Repair Table 2: testplan aquarius_440 (FinUI) Step Nr.
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care 20 Measure IHF>XMIC @800Hz -6 21 Vision: Load group Aquarius Action 22 Vision: Start LED test Action 23 Vision: Check LED test 1 24 Vision: Start LED_OFF test Action 25 Vision: Check LED_OFF test 1 26 Vision: Start PATTERN 'M' test Action 27 Vision: Check PATTERN 'M' test 1 28 Vision: Start LCD_OFF Action 29 Vision: Check LCD_OFF 1 30 Stop Vision test in phone Action 31 BlueTooth BER Test
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care 40 GSM850 BURST t=1 C=H TxL=5 -110 -30 dB X Burst template failure: Check Detector Diode V801 and Loop 41 GSM850 BURST t=2 C=H TxL=5 -70 -6 dB X components: C804, R802, C805, R801, C803. 42 GSM850 BURST t=4 C=H TxL=5 -1 1 dB X also consider components near Mjölner: R708,R707, R706, 43 GSM850 BURST t=9 C=H TxL=5 -1 1 dB X C706 or C831.
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care 54 GSM850 SACCH 102 C=H TxL=5 4 14 - X 55 Handoff to GSM850 C=H TxL=6 0 5 sec X 56 Meas GSM850 All C=H TxL=6 0 1000 sec X 57 GSM850 POWER BURST C=H TxL=6 29 33 dBm X 58 GSM850 Tx Linearity C=H TxL=5 &6 0,5 3,5 dBm X 59 Handoff to GSM850 C=H TxL=19 0 5 sec X 60 Meas GSM850 All C=H TxL=19 0 1000 sec X 61 GSM850 POWER BURST C=H TxL=19 2 8 dBm X 62 GSM850 BURST t=1 C=H TxL=19
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care 71 GSM850 PHASE ERR RMS C=L TxL=5 0 5 deg X Check the following capacitors for correct soldering: 72 GSM850 PHASE ERR PEAK C=L TxL=5 0 20 deg X C610, C740, C741, C626, C710, C711, C712 73 GSM850 Ramping Spectra +400Khz C=L TxL=5 -90 -19 dBm X 74 GSM850 Ramping Spectra 400Khz C=L TxL=5 -90 -19 dBm X Check C715 and C716 for correct soldering 75 GSM850 Mod Spectra +400Khz C=L TxL=5 -100 -60 dB
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care 85 GSM850 Mod Spectra -400Khz C=M TxL=5 -100 -60 dBc X Handoff to PCS1900 C=H TxL=0 0 5 sec X 87 Meas PCS1900 All C=H TxL=0 0 1000 sec X 88 PCS1900 POWER BURST C=H TxL=0 28 32 dBm X 89 PCS1900 BURST t=1 C=H TxL=0 -110 -30 dB X 90 PCS1900 BURST t=2 C=H TxL=0 -70 -6 dB X 91 PCS1900 BURST t=4 C=H TxL=0 -1 1 dB X 92 PCS1900 BURST t=9 C=H TxL=0 -1 1 dB X 93 PCS1900 BURST t=11 C=H
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care 101 PCS1900 Mod Spectra -400Khz C=H TxL=0 0 15 dB X 102 PCS1900 BER 102 C=H TxL=0 0 2 % X Check antenna connection, Check Filter C742,C743 and L610 103 PCS1900 SACCH 102 C=H TxL=0 4 12 - X Check RX1900 path (Z601, Z603, C604, L608, L609) 104 Handoff to PCS1900 C=H TxL=1 0 5 sec X also look at RXIQ Signal 105 Meas PCS1900 All C=H TxL=1 0 1000 sec X 106 PCS1900 POWER BURST C=H TxL=1 26 3
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care 117 Handoff to PCS1900 C=L TxL=0 0 5 sec X 118 Meas PCS1900 All C=L TxL=0 0 1000 sec X 119 PCS1900 POWER BURST C=L TxL=0 28 32 dBm 120 PCS1900 PHASE ERR RMS C=L TxL=0 0 5 deg X Check shielding and antenna connection 121 PCS1900 PHASE ERR PEAK C=L TxL=0 0 20 deg X Check the following capacitors for correct soldering: 122 PCS1900 Ramping Spectra +400Khz C=L TxL=5 -90 -22 dBm X C610, C740
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care 132 PCS1900 Ramping Spectra 400Khz C=M TxL=5 -90 -22 dBm X 133 PCS1900 Mod Spectra +400Khz C=M TxL=5 0 15 dB X Check C715 and C716 for correct soldering 134 PCS1900 Mod Spectra -400Khz C=M TxL=5 0 15 dB X Check TX1900 MHZ path (T701 and surrounding components) EndCall Action 136 Meas Vibra (Sensor) SNR_3 16 50 137 SelfTest C 0 0 138 Sleep Mode Current 0,1 3,5 mA 139 Off Mode Current -
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Nokia Customer Care Company Confidential RH-47 7 - RF Description and Troubleshooting APPENDIX C: Component Placement with Test Points & Detailed Description See 4 pages with Synthesizer Test Points (1 page) Receiver Test Points (1 page) Transmitter Test Points (2 pages) Issue 1 05/04 Copyright © 2004 Nokia Corporation Company Confidential Page 59
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Page 60 Copyright © 2004 Nokia Corporation Company Confidential Testpoint Band Active unit Operation mode Channel DC Level Testpoint Band Active unit Operation mode Channel DC Level Testpoint Band Active unit Operation mode Channel DC Level Testpoi nt Band Active unit Mode Channel Freq. DC lev. RF Pwr (hp probe) Continuous or burst 190 2.8V VR7 GSM850 RX Continuous or burst 190 2.8V VR3 GSM850 RX Continuous or burst 190 1.
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Issue 1 05/04 Copyright © 2004 Nokia Corporation Company Confidential 0.8V Band RX/TX Mode AGC Channel Inp. Pwr Inp. Freq Probe Pwr (hp) DC Level LNA bias Testpoint RXIINN (J607) RXIINP (J606) RXQINN (J609) RXQINP (J608) 0.8V INPL INML GSM1900 RX Continuous 14 661 -60dBm 1960.0677 -72 r 3 RXQINP (J608) RXQINN (J609) RXIIINP (J606) RXIINN (J607) 850 and 1900 RX Continuous 14 190 or 661 -80dBm 881.6677 or 1960.0677 MHz 1.2Vpp 1.35Vdc 67kHz INPL INML GSM850 RX Continuous 14 190 -60dBm 881.
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Page 62 Copyright © 2004 Nokia Corporation Company Confidential Channel DC Level Testpoint Band RX/TX Mode VREF1 GSM850 TX Continuous or burst 190 1.35V Channel DC Level Testpoint Band RX/TX Mode TXP TXC TXQOUTP TXQOUTN Transmitter Test Points (1/2) yp VR3 VR3 GSM850 RX Continuous or burst 190 2.8V Vref1 TXIOUTP TXIOUTQ Testpoint Band RX/TX Mode Channel PCL Power (hp) VC1 VC2 VR5 VR2 Burst 190 5 32.5 r 2 Ant 850 VPD_1900 yp TX 661 0 29.
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Issue 1 05/04 Copyright © 2004 Nokia Corporation Company Confidential PCL 15 PCL 10 VDET PCL 0 Band Graph PCL 19 PCL 15 VDET PCL 5 Testpoint Band RX/TX Mode Graph GSM1900 VDET GSM850 TX Burst Transmitter Test Points (2/2) VPD 1900 1900 TX Burst TXP TXC TXQOUTP TXQOUTN PCL 5 (0) PCL 15 (10) PCL 19 (15) GSM1900 (850) Testpoint Band RX/TX Mode Graph Vref1 TXIOUTP TXIOUTQ VR3 VC1 VC2 VR5 VR2 VPD_1900 VPD_850 850 TX Burst Ant VBD DET Pout_ 850 Pout_ 1900 Pin_ 850 Pin_ 1900 VPD_850
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care APPENDIX D: Calibration of the DA-17/JXS-2 jig, Autotuning and BT Testing Requirements • U.S. AMS requirement is to align/check the phone completely assembled (in addition to the alignment in the MJ-21 repair jig which is still possible). • RF couplers must be used because there is no RF connector on RH-47.
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care placed in the MJ-21 which is connected via Fbus to the Phoenix PC. The phone is in local mode and VCC = 3.6V The attenuation values for all components are known: MJ-21: • 0.2dB (850) • 0.6 dB (1900) Cable (in this case): • 6.9dB (850) • 7.8dB (1900) Note that attenuation values are equal for all channels on each band.
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care MJ-21 TX power measurement Procedure: 1 Start the phone in Local mode. 2 From the Tuning menu, choose “Tx Power Level Tuning”. The “Power Level Tuning” window opens. 3 Select the band and power level to be measured. MJ-21 GSM850 power measurement Procedure: 1 Move the cursor to PCL=5. 2 Align the phone exactly to 32.5 dBm using the “+” and “-” keys.
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care MJ-21 GSM1900 power measurement After the GSM850 power measurement is done the phone switches automatically to the GSM1900 band. Move the cursor to PCL=0 and align the phone exactly to 29.5 dBm.
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care 2 From the Testing menu, choose “RSSI Reading”. The “RSSI Reading” window opens with further settings for the RSSI reading feature. MJ-21 RSSI values Use the default settings: • Measuring mode -> Sum vector • Reading mode -> Continuous After selecting the above settings, click the Start button.
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care MJ-21 example figures P M M M M a ra m J 2 1 _ J 2 1 _ J 2 1 _ J 2 1 _ e te T X T X R X R X r _ _ _ _ 8 1 8 8 5 9 5 5 0 0 0 0 _ L O W 0 _ M ID E x a m p le v a lu e 3 2 .5 d B m 2 9 .5 d B m - 6 1 .5 d B m - 6 0 .7 d B m M J 2 1 _ R X _ 8 5 0 _ H IG H M J 2 1 _ R X _ 1 9 0 0 _ L O W M J 2 1 _ R X _ 1 9 0 0 _ M ID - 6 0 .7 d B m -6 1 d B m - 6 0 .6 d B m M J 2 1 _ R X _ 1 9 0 0 _ H IG H - 6 0 .
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care • RX RSSI level on LOW channel (GSM850, GSM1900) • RX RSSI level on MID channel (GSM850, GSM1900) • RX RSSI level on HIGH channel (GSM850, GSM1900) The cable attenuation values (incl. power splitter when used) must be taken into account in the measurement process. However, disregard the attenuation of the “black box” because this is the value to be determined.
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care The values in between are interpolated. 3 To store the data, click Save. Setting DA-17/JXS-2 calibration loss Procedure: 1 Enter the calibration factors (DA-17 values subtracted from the MJ-21 values) to the Jig column.
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Company Confidential RH-47 7 - RF Description and Troubleshooting Nokia Customer Care 2 Enter the loss values for the RX Low, Mid and High channels on both bands. 3 If the jig “DA-17” is not defined yet, you must generate it by clicking the Add button. Assign it the name DA-17. 4 Click Save. Assigning the product to the jig To make the calibration data valid, it is necessary to assign the DA-17 jig to the product “RH-47”. Procedure: 1 Click the Product tab. 2 Enter “RH-47” into the Product column.
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Procedure: 1 Connect the RF analyser and RF generator to the GPIB card. 2 Open Tools -> Options -> GPIB cards. 3 Click the Start button.
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Nokia Customer Care Company Confidential RH-47 7 - RF Description and Troubleshooting Tuning menu. 2 Click the Tune button in the Auto-Tune window and wait approximately 2 minutes before the autotuning algorithm has finished. Make sure that the “Autotune_RH47.ini” file is stored in the Phoenix directory. Bluetooth test setup DA-17 Bluetooth coupler is connected to RF I/O via a 30 dB attenuator Bluetooth testing Procedure: 1 Issue 1 05/04 From the “Operating mode” dropdown menu, choose Test.
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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care 2 From the Testing menu, choose “Bluetooth LOCALS”. 3 In the “BT Software Operational Mode” pane, choose Normal. 4 Enter the BD address of BT Box 2 on the “Counterpart BT Device Address” line. BER must be <0.1%. 5 Page 76 Click the “Run BER Test” button and wait approximately 2 seconds for the result.