Nokia NPL-4 Series Troubleshooting Instructions Download Page 22

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NPL-4/5/RM-104

Company confidential

Troubleshooting Instructions

Nokia Customer Care

Page 22

Issue 2 05/05

- Check if AGC calibration is within limits

- Check if SNR reading is OK.

- Use an Oscilloscope to check levels of “RXI” and “RXQ”.

The RF ASIC generates only single ended I and Q signals (RXI, RXQ). As the A/D converter
in UEM requires two differential signals, an artificial mid voltage is generated from
VrefRF02.

The BB part is used to measure those signals by means of RSSI reading. This works only if
correct calibration has been carried out in production.

RSSIreading [dBm] = 20log(U

LSB

) - AGC

calibrated

If both RX

and

TX path seem to be faulty it has to be checked if the synthesizer is work-

ing.

Figure 12: Receiver Fault Chart 1

Make sure that

Synthesizer is working

see

Synthesizer Fault
Finding Tree

Rx chain is functional

and calibrated

Selected band is working and
calibrated.
Are all 3 bands measured?

Yes

Signal Generator:

Level:

–80dBm

Frequency: calculated

from

P 67.71kHz

Phoenix:

Phone:

local mode

Open

RF Controls

Active Unit:

Op. Mode:

Burst

Rx/Tx channel:

default (mid)

All 3 bands

Phoenix:

Open

RSSI reading

Check RSSI Level = -80dBm

Yes

Next band

Execute

Rx Calibration

in selected

band
Are calibration results within limits?

Yes

Are all 3 bands measured?

Yes

Receiver
Fault Chart 1.

Summary of Contents for NPL-4 Series

Page 2: ...NPL 4 5 RM 104 Companyconfidential Troubleshooting Instructions Nokia Customer Care Page 2 Copyright 2005 Nokia Corporation All rights reserved Issue 2 05 05 This page left intentionally blank ...

Page 3: ...ue RX I Q signals using oscilloscope 20 Fault finding chart of the receiver 21 Rx signal paths 25 Antenna switch RX TX switch 25 Rx front end 26 RX paths of RF ASIC 27 Transmitter 28 General instructions for transmitter troubleshooting 28 Transmitter troubleshooting 28 Antenna switch TX RX switch 28 GSM850 transmitter 29 General instructions for GSM850 TX troubleshooting 29 GMSK 29 EDGE 30 Fault F...

Page 4: ...00 54 GSM1800 55 GSM1900 57 DC Supply Current Check 59 Baseband Troubleshooting 60 BB measurement points 60 Troubleshooting diagrams 62 Phone is dead 63 Phone is jammed 1 64 Phone is jammed 2 65 Flash faults 1 66 Flash faults 2 67 SIM card faults 68 Charger faults 69 Display faults 1 70 Display faults 2 71 Audio fault1 72 Audio fault 2 73 Audio fault 3 74 Keyboard faults 1 75 Keyboard faults 2 76 ...

Page 5: ... Receiver Fault Chart 2 23 Fig 14 Receiver Fault Chart 3 4 5 23 Fig 15 Receiver Fault Chart 6 24 Fig 16 Receiver Fault Chart 7 24 Fig 17 Receiver Fault Chart 8 25 Fig 18 Receiver Fault Chart 9 25 Fig 19 Block Diagram of Antenna Switch Left Input Port Antenna and Right Output Ports Rx Tx 26 Fig 20 RF Controls 30 Fig 21 RF Controls 32 Fig 22 Band Selection 35 Fig 23 RF Control Values 36 Fig 24 RF Co...

Page 6: ...out 98 Fig 41 FM radio troubleshooting diagram 100 Fig 42 Oscilloscope screen shot Audio output 101 Fig 43 FM radio clock from test point J359 32 kHz frequency clock signal when radio is on 102 Fig 44 FM frequency from FM radio pin 37 the other end of L358 with FM test signal 102 Fig 45 VCO frequency from FM radio pins 3 and 4 the other ends of V356 and V357 with FM test signal 102 ...

Page 7: ... change Most RF semiconductors are static discharge sensitive So ESD protection must be taken care of during repair ground straps and ESD soldering irons Helgo and PA are moisture sensitive so parts must be pre baked prior to soldering Apart from key components described in this document here are a lot of discrete compo nents resistors inductors and capacitors which troubleshooting is done by chec...

Page 8: ... RM 104 Companyconfidential Troubleshooting Instructions Nokia Customer Care Page 8 Copyright 2005 Nokia Corporation All rights reserved Issue 2 05 05 RF Key component placement Figure 1 Component placement 1 ...

Page 9: ...kia Corporation All rights reserved Page 9 RF Test Points The RF power supplies are generated in the UEM and can be measured either in the Small Signal Chamber or in the Baseband Chamber On the drawings below small points show the locations of the test points Figure 2 Picture of the Assembled PWB with Chambers ...

Page 10: ...NPL 4 5 RM 104 Companyconfidential Troubleshooting Instructions Nokia Customer Care Page 10 Copyright 2005 Nokia Corporation All rights reserved Issue 2 05 05 Receiver Figure 3 Receiver Test Points ...

Page 11: ...Troubleshooting Instructions Company confidential NPL 4 5 Issue 2 05 05 Copyright 2005 Nokia Corporation All rights reserved Page 11 Transmitter Figure 4 Transmitter Test Points Synthesizer Figure 5 Synthesizer Test Points ...

Page 12: ...nstructions Nokia Customer Care Page 12 Copyright 2005 Nokia Corporation All rights reserved Issue 2 05 05 RF in General Figure 6 RF Block Diagram RF block diagram consisting of RF front end module Power amplifier module RF ASIC VCTCXO module VCO module ...

Page 13: ...rsion transceiver Using direct conversion no intermediate frequencies are used for up or down conversion Figure 7 RF Power Supply Configuration GSM 869 894 MHz 925 960 MHz DCS 1805 1880 MHz PCS 1930 1990 MHz f f f 4 f 4 f f Helgo f 2 f 2 PLL 3296 3980 MHz I signal Q signal RX I signal Q signal TX PCS 1850 1910 MHz DCS 1710 1785 MHz GSM 824 849 MHz 880 915 MHz Buffer VCTCXO 26 MHz 26 MHz VCTCXO AFC...

Page 14: ...50 1910 MHz Output Power GMSK GSM850 5 33 dBm 3 2 mW 2 W GSM900 5 33 dBm 3 2 mW 2 W GSM1800 0 30 dBm 1 0 mW 1 W GSM1900 0 30 dBm 1 0 mW 1 W Output Power 8 PSK GSM850 5 27 dBm 3 2 mW 0 5 W GSM900 5 27 dBm 3 2 mW 0 5 W GSM1800 0 26 dBm 1 0 mW 0 4 W GSM1900 0 26 dBm 1 0 mW 0 4 W Duplex Spacing GSM850 45 MHz GSM 900 45 MHz GSM 1800 95 MHz GSM 1900 80 MHz Number of RF Channels GSM 850 124 GSM 900 174 G...

Page 15: ...are Troubleshooting Instructions Company confidential NPL 4 5 Issue 2 05 05 Copyright 2005 Nokia Corporation All rights reserved Page 15 Frequency Error static channel 0 1 ppm RMS Phase Error 5 0 Peak Phase Error 20 0 ...

Page 16: ...Start Phoenix Service Software and open FBUS connection Select Scan Product Ctrl R Wait until phone information NPL 4 or NPL 5 is shown in the lower right corner of the screen Follow the instructions below Measuring RX I Q Signals using RSSI Reading Start Phoenix Service Software and open FBUS connection Select Scan Product Ctrl R Wait until phone information is shown in the lower right corner of ...

Page 17: ...l generator Frequencies GSM 850 869 26771 MHz channel 190 67 710 kHz offset GSM 900 942 46771 MHz channel 37 67 710 kHz offset GSM 1800 1842 86771 MHz channel 700 67 710 kHz offset GSM 1900 1960 06771 MHz channel 661 67 710 kHz offset 2 RF power level 60 dBm the antenna connector of the phone test jig Remember to compensate for the cable and jig attenuation Click on Read now in RSSI reading The re...

Page 18: ...een Set operating mode to local mode Select Testing RF Controls Select Band GSM 850 or GSM 900 or GSM1800 or GSM1900 Active unit RX Operation mode Burst RX TX Channel 190 or 37 or 700 or 661 Select Testing SNR Measurement Select Measuring mode Fast SNR Radio Button Press Start The window Signal Measurement pops up informing on frequency and power level of the signal generator to be set Press ok an...

Page 19: ...vels using spectrum analyzer Spectrum Analyzer SA level values depend on the probe type and shall be verified by a properly working phone sample Start Phoenix Service Software and open FBUS connection Select Scan Product Ctrl R Wait until phone information is shown in the lower right corner of the screen Set operating mode to local mode Select Testing RF Controls Select Band GSM850 or GSM 900 or G...

Page 20: ...evel 60dBm Start Phoenix Service Software and open FBUS connection Select Scan Product Ctrl R Wait until phone information is shown in the lower right corner of the screen Set operating mode to local mode Select Testing RF Controls Wait until the RF Controls window is popped up Select Band GSM 850 or GSM 900 or GSM1800 or GSM1900 Active unit RX Operation mode continuous RX TX Channel 190 or 37 or ...

Page 21: ...hase difference should be 90 degrees between RX I Q signals at all bands Fault finding chart of the receiver During fault finding the calibration procedure is used to find out whether all bands are affected error in common part of the Rx chain or only one band error in a Rx part of the failed band Take care not to save calibration values to the phone memory which are out of limits Find the error f...

Page 22: ...n carried out in production RSSIreading dBm 20log UBB ULSB AGCcalibrated If both RX and TX path seem to be faulty it has to be checked if the synthesizer is work ing Figure 12 Receiver Fault Chart 1 Make sure that Synthesizer is working see Synthesizer Fault Finding Tree Rx chain is functional and calibrated Selected band is working and calibrated Are all 3 bands measured Yes No Yes Signal Generat...

Page 23: ...5 C549 Oscilloscope Check reference voltages of RF part VrefRF01 1 4V Yes Oscilloscope Check reference voltages of RF part VrefRF02 1 4V Yes No Check supply filter components R421 R423 C421 C422 and UEM Receiver Fault Chart 4 Spectrum Analyzer 1 Check Rx Tx Switch Diplexer Depending on selected band check GSM850 900 output Rx1 GSM1800 output Rx2 GSM1900 output Rx3 Level at Z809 output 75dBm Yes Ch...

Page 24: ...SIC Helgo Yes No Receiver Fault Chart 6 Yes Signal Generator Level 92dBm Frequency calculated from Phoenix Phoenix SNR measurement ok SNR 18 37dB No Front end is ok Phoenix open SNR Measurement Meas Mode Fast SNR Press Measure Single band fault finding Select faulty band in Phoenix and continue measurements on dedicated Rx part Signal Generator Level 55dBm Frequency calculated from Phoenix no offs...

Page 25: ...h a known good sample Receiver Fault Chart 8 Signal Generator Level 55dBm Frequency calculated from Phoenix no offset Phoenix Phone local mode RF Controls Active Unit Rx Op Mode Continuous Rx Tx channel default mid AGC 12 Check Rx SAW filter of selected band GSM850 900 Z808 output both lines 80dBm GSM1800 Z807 output both lines 80dBm GSM1900 Z806 single output 74dBm Note 1 RF levels are dependent ...

Page 26: ... RX front end includes three SAW filters for GSM 850 US variant or GSM 900 EU variant Z808 and for both variants GSM1800 Z807 and GSM1900 Z806 GSM 850 900 and GSM 1800 filters are matched to the corresponding LNA inputs of the RF ASIC N500 with differential matching network LC type For GSM 1900 an external LNA V802 improves the noise figure of the receiver For conversion of the unbalanced output p...

Page 27: ...for each band and the subsequent pre gain stages The GSM 1900 signal is fed to the pre gain stage also used for the GSM 1800 signal After amplification the RX signals are down converted The RX paths of the RF ASIC consist of following sub units Separate LNAs for each of the bands GSM 850 900 and GSM1800 Two PRE GAIN amplifiers one for GSM 850 900 and one for GSM1800 and GSM1900 Two passive I Q mix...

Page 28: ...e 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 Additionally a DC block is recommended Assure not to overload or destroy the equipment Start Phoenix Service Software and open FBUS connection Select S...

Page 29: ...lid only for the NPL 4 US variant Start the preparations as described in chapter General instruction for the transmitter troubleshooting General instructions for GSM850 TX troubleshooting GMSK Select operating mode to local mode Select Testing RF Controls In the popped up window Select Band GSM 850 Active unit TX Operation mode Burst RX TX Channel 190 TX Power Level 10 TX Data Type Random The Phoe...

Page 30: ...sizer Operation chapter should detect the following output signal of the phone Pout 23dBm 836 6 MHz If this is not the case then go to the chapter GMSK for the troubleshooting Start the preparations as described in chapter Check synthesizer Operation EDGE Select operation mode to the local Select Testing RF control In the popup window common values Active unit TX Band 850 Operation mode Burst RX T...

Page 31: ...a Customer Care Troubleshooting Instructions Company confidential NPL 4 5 Issue 2 05 05 Copyright 2005 Nokia Corporation All rights reserved Page 31 Tx data type Alternate TX PA mode High TX Power level 10 ...

Page 32: ... Controls Now the measurement equipment should detect the following output signal of the phone Pout 24 dBm 836 6 MHz If this is not the case then go to the chapter EDGE for the troubleshooting Start the preparations as described in Check synthesizer Operation Fault Finding Chart for GSM850 Transmitter In the following it is assumed that the TXP signal is used as trigger signal For that a TXP test ...

Page 33: ...dc 1 1 V Base Band C530 TXQOUTP 67kHz Vac 0 4 Vpp Vdc 1 1 V C530 TXQOUTN 67kHz Vac 0 4 Vpp Vdc 1 1 V Yes Oscilloscope C713 VTXB_850 Vdc 2 88 Volt No Check VC1 CONT1 Vdc 0 Volt Helgo Serial Interface VC2 CONT2 Vdc 0 Volt Helgo VC3 CONT3 Vdc 2 76 Volt R703 VPCTRL_850 Vdc 1 3 Volt Yes Spectrum analyzer No Check C707 RFin_850 900 P 3 dBm 836 6MHz EGSM TX SAW Filter Compare with good sample Helgo Yes S...

Page 34: ...ating mode to the local mode Select Testing RF Controls Wait until the RF Controls window is popped up Select Band GSM 900 Active unit TX Operation mode Burst RX TX Channel 37 TX Power Level 10 Use Phoenix to select TX_Data Type 1 or 0 TX Power Level 10 Ch190 Ensure Vbatt 3 9 V Yes Oscilloscope C741 IREF01 Vdc 0 5 Volt Check C702 Mode Vdc 2 78 Volt No Base Band BOM1 VPCTRL_900 R703 Vdc 0 V BOM2 VP...

Page 35: ...his Figure 22 Band Selection Now the measurement equipment should detect the following output signal of the phone Pout 23dBm 897 4 MHz If this is not the case then go to the chapter GMSK for troubleshooting EDGE Select operation mode to the local Select Testing RF control In the popup window common values Active unit TX Band 900 Operation mode Burst RX TX Channel 37 In the popup window TX control ...

Page 36: ...r level 10 The setup should now look like this Figure 23 RF Control Values Now the measurement equipment should detect the following output signal of the phone Pout 24 dBm 897 4 MHz If this is not the case then go to the chapter EDGE for the troubleshooting Fault finding chart for GSM900 transmitter In the following it is assumed that the TXP signal is used as trigger signal For that a TXP test po...

Page 37: ...6 TXQOUTP 67kHz Vac 0 4 Vpp Vdc 1 1 V C536 TXQOUTN 67kHz Vac 0 4 Vpp Vdc 1 1 V Yes Oscilloscope C713 VTXB_900 Vdc 2 78 Volt No Check VC1 CONT1 Vdc 0 Volt Helgo Serial Interface VC2 CONT2 Vdc 0 Volt Helgo VC3 CONT3 Vdc 2 7 Volt R712 VPCTRL_90 0 Vdc 1 Volt Yes Spectrum analyzer No Check Z700 out R706 in RFin_850 900 P 3 dBm 897 4MHz EGSM TX SAW Filter Compare with good sample Helgo Yes Synthesizer U...

Page 38: ...SK Set the operating mode to local mode Select Testing RF Controls Wait until the RF Controls window is popped up Select Band GSM 1800 Active unit TX Operation mode Burst RX TX Channel 700 TX Power Level 5 Use Phoenix to select TX_Data Type 1 or 0 TX Power Level 10 Ch37 Ensure Vbatt 3 9 V Yes Oscilloscope R705 IREF01 Vdc 0 5 Volt Check R702 Mode Vdc 2 78 Volt No Base Band BOM1 VPCTRL_900 R703 Vdc ...

Page 39: ...e 24 RF Control Values Now the measurement equipment should detect the following output signal of the phone Pout 23dBm 1747 8 MHz If this is not the case then go to the chapter GMSK for the troubleshooting EDGE Select operation mode to the local Select Testing RF control In the popup window common values Active unit TX Band 1800 Operation mode Burst RX TX Channel 700 In the popup window TX control...

Page 40: ...evel 5 The setup should now look like this Figure 25 RF Control Values Now the measurement equipment should detect the following output signal of the phone Pout 21 dBm 1747 8 MHz If this is not the case then go to the next chapter for troubleshooting Fault finding chart for GSM1800 transmitter In the following it is assumed that the TXP signal is used as trigger signal For that a TXP test point is...

Page 41: ...p Vdc 1 1 V C536 TXQOUTN 67kHz Vac 0 4 Vpp Vdc 1 1 V Yes Oscilloscope C709 VTXB_1800 _1900 Vdc 2 78 Volt No Check VC1 CONT1 Vdc 2 7 Volt Helgo Serial Interface VC2 CONT2 Vdc 2 7 Volt Helgo VC3 CONT3 Vdc 0 Volt R713 VPCTRL_18 00_1900 Vdc 1 Volt Yes Spectrum analyzer No Check T700 out R710n RFin_180 0 1900 P 3 dBm 1747 8MHz T700 Balun Compare with good sample Helgo Yes Synthesizer Use Phoenix to sel...

Page 42: ... RF Controls Wait until the RF Controls window is popped up Select Band GSM 1900 Active unit TX Operation mode Burst RX TX Channel 661 TX Power Level 5 TX Data Type Random Use Phoenix to select TX_Data Type 1 or 0 TX Power Level 5 Ch700 Ensure Vbatt 3 9V Yes Oscilloscope C742 IREF_1800_ 1900 Vdc 0 5 Volt Check C702 Mode Vdc 2 78 Volt No Base Band BOM1 VPCTRL_1800 R713 Vdc 0 V BOM2 VPCTRL_1800 R713...

Page 43: ...he measurement equipment should detect the following output signal of the phone Pout 23dBm 1880 MHz If this is not the case then go to the chapter GMSK for the troubleshooting EDGE Select operation mode to the local Select Testing RF control In the popup window common values Active unit TX Band 1900 Operation mode Burst RX TX Channel 661 In the popup window TX control values EDGE ON Tx data type A...

Page 44: ...uld now look like this Figure 27 RF Control Values Now the measurement equipment should detect the following output signal of the phone Pout 21 dBm 1880 MHz If this is not the case then go to the chapter EDGE for the troubleshooting Fault finding chart for GSM1900 transmitter In the following it is assumed that the TXP signal is used as trigger signal For that a TXP test point is provided ...

Page 45: ... 67kHz Vac 0 4 Vpp Vdc 1 1 V C536 TXQOUTN 67kHz Vac 0 4 Vpp Vdc 1 1 V Yes Oscilloscope C714 VTXB_1800 _1900 Vdc 2 78 Volt No Check VC1 CONT1 Vdc 2 7 Volt Helgo Serial Interface VC2 CONT2 Vdc 2 7 Volt Helgo VC3 CONT3 Vdc 0 Volt R713 VPCTRL_18 00_1900 Vdc 1 Volt Yes Spectrum analyzer No Check T700 out R710 in RFin_180 0 1900 P 3 dBm 1747 8MHz T700 Balun Compare with good sample Helgo Yes Synthesizer...

Page 46: ...re that the GMSK is OK Use Phoenix to select TX_Data Type 1 or 0 TX Power Level 5 Ch661 Ensure Vbatt 3 9 V Yes Oscilloscope C742 IREF_1800_ 1900 Vdc xx Volt Check C702 Mode Vdc 2 78 Volt No Base Band BOM1 VPCTRL_1900 R713 Vdc 0 V BOM2 VPCTRL_1900 R713 Vdc 2 7 V Yes Spectrum analyzer Check PA N700 RF connector No Check Power Loop Pout 21 dBm 1880 MHz Yes GSM 1900 TX OK ...

Page 47: ...l R or in menu File Scan Product Wait until phone information is shown in the lower right corner of the screen Set operating mode to Local Open window RF Controls menu Testing RF Controls Set the synthesizer to the following mode Select Band GSM 1800 Active unit RX Operation mode Continuous RX TX Channel 700 The setup should now look like this To measure the supply voltage VR7 the tuning voltage V...

Page 48: ... 250MHz V The typical relation of VCO fre quency and tuning voltage is shown in the following diagram Figure 28 Typical Feature Tuning Curve for the Matshushita VCO If the frequency or the tuning voltage have other values than given above then go to chapter Fault finding chart for PLL synthesizer Reference oscillator 26 MHz VCTCXO The reference oscillator is implemented as Voltage Controlled Tempe...

Page 49: ...bration of the low band Voltage Controlled Oscillator VCO The VCO is able to generate frequencies in the range of 3296MHz to 3980MHz when the PLL is working properly The frequency of the VCO signal is divided by 2 or by 4 in the RF ASIC This allows the generation of all the frequencies in the GSM850 GSM900 GSM1800 and GSM1900 bands both RX and TX range The output frequency of the VCO is controlled...

Page 50: ...r components C295 C574 Check BB and SW G501 defective or short circuit to GND Oscilloscope VCO supply VR7 2 78V VR5 2 78V VR1 4 7V Spectrum analyzer VCO out G502 Some signal 3 4 4 GHz Change VCO Check loop filter components C503 C504 C505 R501 R502 Wrong writing on RFBus see BB part If ok change RF ASIC N500 BB not working because 26MHz missing For a failure free working of BB the 26MHz clock is n...

Page 51: ...eshooting Instructions Company confidential NPL 4 5 Issue 2 05 05 Copyright 2005 Nokia Corporation All rights reserved Page 51 Pictures of synthesizer signals Figure 29 26 Mhz at G501 Pin Out Figure 30 26 MHz RFCLK at R420 C420 ...

Page 52: ...5 RM 104 Companyconfidential Troubleshooting Instructions Nokia Customer Care Page 52 Copyright 2005 Nokia Corporation All rights reserved Issue 2 05 05 Figure 31 VCO Output 1800 Band RX on Continuous Output ...

Page 53: ...0 887 0 3368 0 3548 0 156 829 8 874 8 3319 2 3499 2 218 842 2 887 2 3368 8 3548 8 157 830 0 875 0 3320 0 3500 0 219 842 4 887 4 3369 6 3549 6 158 830 2 875 2 3320 8 3500 8 220 842 6 887 6 3370 4 3550 4 159 830 4 875 4 3321 6 3501 6 221 842 8 887 8 3371 2 3551 2 160 830 6 875 6 3322 4 3502 4 222 843 0 888 0 3372 0 3552 0 161 830 8 875 8 3323 2 3503 2 223 843 2 888 2 3372 8 3552 8 162 831 0 876 0 33...

Page 54: ...2 8 3631 2 3811 2 1002 885 6 930 6 3542 4 3722 4 28 895 6 940 6 3582 4 3762 4 90 908 0 953 0 3632 0 3812 0 1003 885 8 930 8 3543 2 3723 2 29 895 8 940 8 3583 2 3763 2 91 908 2 953 2 3632 8 3812 8 1004 886 0 931 0 3544 0 3724 0 30 896 0 941 0 3584 0 3764 0 92 908 4 953 4 3633 6 3813 6 1005 886 2 931 2 3544 8 3724 8 31 896 2 941 2 3584 8 3764 8 93 908 6 953 6 3634 4 3814 4 1006 886 4 931 4 3545 6 37...

Page 55: ... 0 1867 0 3544 0 3734 0 540 1715 8 1810 8 3431 6 3621 6 634 1734 6 1829 6 3469 2 3659 2 728 1753 4 1848 4 3506 8 3696 8 822 1772 2 1867 2 3544 4 3734 4 541 1716 0 1811 0 3432 0 3622 0 635 1734 8 1829 8 3469 6 3659 6 729 1753 6 1848 6 3507 2 3697 2 823 1772 4 1867 4 3544 8 3734 8 542 1716 2 1811 2 3432 4 3622 4 636 1735 0 1830 0 3470 0 3660 0 730 1753 8 1848 8 3507 6 3697 6 824 1772 6 1867 6 3545 2...

Page 56: ...1838 8 3487 6 3677 6 774 1762 6 1857 6 3525 2 3715 2 868 1781 4 1876 4 3562 8 3752 8 587 1725 2 1820 2 3450 4 3640 4 681 1744 0 1839 0 3488 0 3678 0 775 1762 8 1857 8 3525 6 3715 6 869 1781 6 1876 6 3563 2 3753 2 588 1725 4 1820 4 3450 8 3640 8 682 1744 2 1839 2 3488 4 3678 4 776 1763 0 1858 0 3526 0 3716 0 870 1781 8 1876 8 3563 6 3753 6 589 1725 6 1820 6 3451 2 3641 2 683 1744 4 1839 4 3488 8 36...

Page 57: ...1953 8 3747 6 3907 6 724 1892 6 1972 6 3785 2 3945 2 537 1855 2 1935 2 3710 4 3870 4 631 1874 0 1954 0 3748 0 3908 0 725 1892 8 1972 8 3785 6 3945 6 538 1855 4 1935 4 3710 8 3870 8 632 1874 2 1954 2 3748 4 3908 4 726 1893 0 1973 0 3786 0 3946 0 539 1855 6 1935 6 3711 2 3871 2 633 1874 4 1954 4 3748 8 3908 8 727 1893 2 1973 2 3786 4 3946 4 540 1855 8 1935 8 3711 6 3871 6 634 1874 6 1954 6 3749 2 39...

Page 58: ...27 6 774 1902 6 1982 6 3805 2 3965 2 587 1865 2 1945 2 3730 4 3890 4 681 1884 0 1964 0 3768 0 3928 0 775 1902 8 1982 8 3805 6 3965 6 588 1865 4 1945 4 3730 8 3890 8 682 1884 2 1964 2 3768 4 3928 4 776 1903 0 1983 0 3806 0 3966 0 589 1865 6 1945 6 3731 2 3891 2 683 1884 4 1964 4 3768 8 3928 8 777 1903 2 1983 2 3806 4 3966 4 590 1865 8 1945 8 3731 6 3891 6 684 1884 6 1964 6 3769 2 3929 2 778 1903 4 ...

Page 59: ...pply Diagram VR1 4 78 V 4 6V 4 9V charge pump VCP Tx modulator Vcc_ModOut 2 81 V 2 70V 2 86V VCTCXO VCC digital interface VDIG VR4 VR3 VR2 PLL prescaler VPRE VR5 phasing dividers of Rx VLO BB buffer VDIG VR6 Rx Front End VRF_RX 16 mA max 20 mA VCO VCC_VCO VR7 UEM Triple band PA VBAT 100 uA bias reference VB_EXT VrefRF01 TX buffer EDGE ALCs VRF_TX Bias Rx CH filters VF_RX 2 81 V 2 70V 2 86V RF cont...

Page 60: ...nfidential Troubleshooting Instructions Nokia Customer Care Page 60 Copyright 2005 Nokia Corporation All rights reserved Issue 2 05 05 Baseband Troubleshooting BB measurement points Figure 33 NPL 4 5 BB Measurement Points Top ...

Page 61: ...Nokia Customer Care Troubleshooting Instructions Company confidential NPL 4 5 Issue 2 05 05 Copyright 2005 Nokia Corporation All rights reserved Page 61 Figure 34 NPL 4 5 BB Measurement Points Bottom ...

Page 62: ...artup or the phone is jammed Charging doesn t work Phone doesn t read SIM card Audio doesn t work Keypad doesn t work No Display doesn t work Accessory doesn t work Flashlight doesn t work Compass doesn t work FCI doesn t work Camera doesn t work No No No No No No No No No No No Phone is dead Flash faults Phone is jammed SIM card fault Charger fault Audio faults Keypad faults Yes Yes Yes Yes Yes Y...

Page 63: ...a Corporation All rights reserved Page 63 Phone is dead Phone is dead Phone current is zero Phone current is 50mA Is phone in LOCAL mode Is phone flash proramming OK Check X100 Change UEMEk Repair Ok retest Check BSI line X100 C100 R203 C220 R206 OK Phone is jammed Flash faults Yes No Yes No No Yes Yes No Yes No ...

Page 64: ...SleepClk from testpoint J404 Is it OK Measure 26MHz RFClk from R420 Is it OK Measure PURX signal from testpoint J402 Is it HIGH 1 8V Measure 26MHz RFCLK from G501 out Is it OK Measure 32kHz SleepClkfrom B200 Is it OK Check VBATT1 7 VIO VCORE VFLASH1 VANA VR3 lines Are they OK Phone is jammed 2 Check BSI BTEMP lines If OK change UEMEk Check B200 C209 C210 Change UEMEk Check C574 R520 C540 If OK cha...

Page 65: ...med 2 Phone is jammed 2 Phone Shutdown after 30s Read phone info Is it OK Measure DBUSClk 1MHz signal from testpoint J413 Is it OK Measure FBUSRx signal during phone info read from testpoint J412 Is it OK Measure FBUSTx signal during phone info read from testpoint J411 Is it OK Change UPP Change UPP Change UEMEk Retest No No Yes No Yes Yes No Change UEMEk No Yes No ...

Page 66: ...ts Phone doesn t set FlashBus TxD line HIGH after the startup Measure BSI pulse during Flash programming Is it OK Phone doesn t set FlashBus TxD line LOW after the line has been set HIGH Measure FBusTx line during Flash programming TP 411 Is it HIGH 1 8V Check BSI line X100 C100 R203 C220 R206 Check FBUSTx line If OK Change UEMEk Change UPP Flash faults 2 Yes No Yes No No Yes Yes No ...

Page 67: ... 5 Issue 2 05 05 Copyright 2005 Nokia Corporation All rights reserved Page 67 Flash faults 2 Flash faults 2 Wrong manufacturer ID or Device ID Phone is totally dead Phone doesn t start up or phone is jammed Change Flash Phone is dead Phone is jammed Retest Yes No Yes No Yes No ...

Page 68: ...IM card faults Set phone to LOCAL mode Is it OK Measure VSIM voltage from X386 Is it 3V 1 8V Check SIM power up sequency Is it OK Check BSI line X100 C100 R203 C220 R206 If OK change UEMEk Check VSIM line X386 C203 C390 C391 If OK change R388 If still wrong VSIM change UEMEk Check SIM lines C392 R389 If OK change R388 If still fail change UEMEk Change UPP END Check X386 Yes No No Yes No Yes No Yes...

Page 69: ...ults Connect ACP 7 charger Battery bar doesn t scroll Measure voltage over TVS V100 Is it 3 0V Read BTEMP value Compare 25C temp ambient value 290 330 Remove fuse F100 and measure current Is it 350 390mA Retest Retest Check X101 whole PopPort assembly V100 C106 C110 F100 L100 and lines Check R110 C120 C240 R207 and lines Check R200 if ok change UEMEk No No No Yes Yes Yes Yes No ...

Page 70: ...ure voltage between J303 and J302 Is it typ 7 2V Set phone to LOCAL mode Set VBATT to 4 2V Start Display test with Phoenix Set display lights ON Fault in display module Retest Check CALLED1 and DLIGHTlines If they are OK change UEMEk Check C302 C303 L300 V30 0 R310 R302 R300 C304 If OK change N300 Check V311 V314 R311 R312 R366 V319 Retest Check CALLED1 N300 8 and DLIGHT V314 IN Are they HIGH Meas...

Page 71: ...y faults 2 Does the display start Try to change Display module Does it work now Check signals RESX J306 SDA J305 SCLK J307 CSX J304 Are they OK Fault in display module Retest Check lines of VFLASH1 and VIO If lines are OK change UEMEk Check display control lines If OK change UPP Change X302 Measure VDDI J301 2 78V and VDD J300 1 8V Are they OK No Yes No No END Yes No Yes Yes ...

Page 72: ...ule back Use Phoenix audio test Set EXT IN HP OUT LOOP ON Check L150 C155 R151 R152 and lines If OK change UEMEk Retest Check L102 C116 C150 R153 R154 R172 and lines If OK change UEMEk Check earpiece contact springs from old UI module and change earpiece to old UI module Retest Audio faults 2 No Yes No No No Yes Yes Connect EXT audio signal 1kHz sine 200mVpp between XMICP and XMICN Measure sine si...

Page 73: ...y Is it working now Measure MICB1 voltage from J110 pad Is it 2 2V Restore old C cover Set phone to LOCAL mode Using Phoenix Audiotest set HP IN EXT OUT LOOP ON Check L101 R156 R150 C152 R171and lines If OK change UEMEk Check mic contact springs from old C Cover assembly If not OK change PopPort assembly to old C cover Retest No No No Audio faults 3 Check C153 C151 R157 and lines If OK change UEME...

Page 74: ...l mode with Phoenix audio control Set buzzer ON vol 9 and freq to 1kHz Measure signal level from IHF pads to GND Is it rectangular wave from 0V to VBatt Check L186 L187 IHF PA output lines Retest Measure AC level C173 C174 Is it 200 mVp p Measure shutdown DC level from J150 Is it 1 8V Change new C cover IHF speaker or contact springs fault Retest Change UPP D400 Retest Change UEMEk D200 Retest Cha...

Page 75: ...eserved Page 75 Keyboard faults 1 Keyboard faults Is the powerkey working Measure voltage from S302 Is it HIGH Check S302 Is it OK Check R306 C310 S302 and POWERONX line If OK change UEMEk Change S302 Phone is dead Measure voltage from S302 when powerkey is pressed Is it HIGH No No No Keyboard faults 2 Yes Yes Yes Yes Phone is jammed No ...

Page 76: ...orking now Measure SLEEPX signal from J403 when key pressed Is it 1 8V When keypad is pressed the LED s are turned on Faulty UI module Retest Check ROW0 4 lines X301 If OK change Z300 If still fails change UPP Check ROW0 4 lines X301 If OK change Z300 If still fails change UPP Check ROW0 4 lines X301 If OK change Z300 If still fails change UPP Measure ROW0 4 lines from X301 Are they HIGH No Yes No...

Page 77: ...still fail change UPP Check S300 and COL0 lines If OK change Z300 If still fail change UPP Measure COL0 from S300 when key is pressed Is there 50us pulse No Yes No No Change UPP Yes Measure ROW1 line from S301 Is it 1 8v Check S300 S301 S303 and lines If OK change Z300 If still fail change UPP Check S301 and COL4 lines If OK change Z300 If still fail change UPP Measure COL0 from S301 when key is p...

Page 78: ...05 05 Keyboard faults 4 Keyboard faults 4 Is PTT key working Measure ROW4 line from S303 Is it 1 8v Check S303 S300 S301 and lines If OK change Z300 If still fail change UPP Check S300 and COL0 lines If OK change Z300 If still fail change UPP Measure COL0 from S300 when key is pressed Is there 50us pulse No Yes No No Change UPP Yes Yes Keyboard faults 5 ...

Page 79: ...g now Measure voltage over C304 Is it typ 9 1V Measure voltage at X301 pin 15 Is it typ 7 2V Set phone to LOCAL mode Set VBATT to 4 2V Start Display test with Phoenix Set Keyboard lights ON UI board failure Retest Check CALLED1 and KLIGHT lines If lines are OK change UEMEk Check C302 C303 L300 V30 0 R310 R302 R300 C304 If OK change N300 Check V313 V314 R313 R314 Check CALLED1 N300 8 and DLIGHT V31...

Page 80: ...ine trans HIGH to LOW 0 6V Check ACI line trans LOW to HIGH Is it OK Audio OK Insert mono headset HDB 4 Check PopPort connecor pin 3 ACI and line to systemboard L106 R103 R102 R109 C103 If OK change UEMEk Retest Remove headset Check PopPort connecor pin 3 ACI and line to systemboard L106 R103 R102 R109 C103 If OK change UEMEk Retest Check C107 C108 L103 C114 C119 R105 R106 R164 R165 C157 Audio fau...

Page 81: ...connected insertion removal resistor connect to ACI line 1a phone gets HeadInt interrupt after 20ms check that ACI line is still low Vhead min 2 Connect MBUS with HeadInt line MBUS switch 3 The 20 ms timer elapsed and no transition has been on HeadInt line 3a Disconnect MBUS from HeadInt line 4 Accessory is removed Phone gets HeadInt interrupt from ACI line low to high transition 4a If no HeadInt ...

Page 82: ... 2 8V Ref picture below Is the start up sequency like it Audio OK Insert stereo headset HDS 3 Wait 5s Check PopPort connecor pin 4 Vout and line to systemboard L107 C112 R103 and C290 If ok change UEMEk Retest Reinsert headset Check PopPort connecor pin 3 ACI and line to systemboard L106 R103 R102 R109 C103 If OK change UEMEk Retest Check C107 C108 C109 C117 L103 L104 C113 C114 C118 C119 R105 R106...

Page 83: ...w Vhead min 2 Connect MBUS with HeadInt line MBUS switch 2a If the phone detect a HeadInt interrupt from low to high transition in 20ms timeframe then an advanced accessory is connected 3 ACI chip reset 3000 4000us 4 Power up delay 50 400us 5 Start bit 50us 6 Learning sequence 567 1700us 7 ACI communication 8 MBUS is disconnected from HeadInt line MBUS switch After every communication 9 Accessory ...

Page 84: ...ltage over C304 Is it typ 9 1V Measure voltage V317 3 Is it typ 5 0V Set phone to LOCAL mode Set VBATT to 4 2V Start Display test with Phoenix Set Flashlight ON Check lines of CALLED1 and CALLED2 If lines are OK change UEMEk C302 C303 L300 V30 0 R310 R302 R300 C304 If OK change N300 Check V320 V317 R315 R316 R318 Check CALLED1 N300 8 and CALLED2 V320 IN Are they HIGH No Change V318 and or R318 Yes...

Page 85: ... 5 Issue 2 05 05 Copyright 2005 Nokia Corporation All rights reserved Page 85 Self tests Self tests If any self test is failed contact service information will be shown on display Set phone to LOCAL mode Use Phoenix BB Self Tests Run All Self test show now what test are failed ...

Page 86: ...dow testing FC I test 2 Select M isc folder 3 D isable FC Int 4 S elect folder Pin state W rite pinstate V out high M easure Vout voltage V bat 0 2V from E320 M J 9 P hoenix W rite S D A S C L high R ead pinstates and m easure voltage level from E320 SD A SC L high 1 8V W rite SD A S C L low R ead pinstates and m easure voltage level from E320 SD A SC L low 0V YE S C hange AS IP Z301 R etest O K N...

Page 89: ... reserved Page 89 Compass Troubleshooting compass funtion start raw value readings are succesful start raw value follows phone rotating heading angle value is sensible Calibration function is successful MagIC problem Calibration problems 1 sensor problems 1 No No Yes Yes No Yes sensor problems 2 calibration problems 2 No Yes end No Yes ...

Page 90: ...stomer Care Page 90 Copyright 2005 Nokia Corporation All rights reserved Issue 2 05 05 Calibration 1 calibration place is flat calibration place is undisturbed calibration 1 Rotating speed is suitable fix and recalibrate go to start Yes Yes No No No go sensor problem 1 Yes ...

Page 91: ...orporation All rights reserved Page 91 Calibration 2 Rotate phone with compass on Heading values are linear calibration 2 Immobile phone heading value is steady and calm Set phone to flat level and recalibrate Remove external and internal activities and recalibrate No No Yes Retest go to start problems anymore Yes ...

Page 92: ...rved Issue 2 05 05 Sensor problems 1 Check capacitors C314 and C318 Exist and ok raw values of x y are on the range sensor problems 1 Check S R pulses and VBridge voltage level As specified fix the problem Change MagIC N302 Check PWB connection and if nessessary change the sensor N303 No No Yes Yes No Retest go to start problems anymore Yes ...

Page 93: ...age 93 Start calibration external undistur bance verified internal disruption removed raw values are linear start calibration values of x and y and on the range revove disrupting object or function and recalibrate recalibrate stop call charging and other intensive actions and relicalibrate No No Yes Yes No retest go to start problems anymore Yes ...

Page 94: ...1V typ 1 0V to 1 2V Magnetometer control interface testpoints Set Reset pulse J327 Vbridge J326 Figure 37 Testpoints Check calibration values x and y gain abs max min would be range of 300 to 1700 offsets not precalculated for both channels calculated as max gain 2 normal variation would be range 1000 to 1000 offset values are not precalculated ratio of x y gain would be range of 0 75 to 1 33 scor...

Page 95: ...ence of offset strap coil difference of measured values must be range of 320 to 420digit for both channels Check Set Reset pulses and VBridge voltage measure with oscilloscope S R pulses and Vbridge voltages are active only during the measurement phase Check measurement bridges output voltages Voltages referred to ground must be near 1 1V and difference signal 0 0V ...

Page 96: ...ts reserved Issue 2 05 05 Magic troubleshooting check VIO voltage is 1 8V magic Check VCOMP voltage during MagIC active is it 2 8V check UEME this is not compass functionality problem Check regulator N971 this is not compass functionality problem No No Yes Retest go to start problems anymore MagIC starts Change MagIC N302 Yes No Yes ...

Page 97: ...are Troubleshooting Instructions Company confidential NPL 4 5 Issue 2 05 05 Copyright 2005 Nokia Corporation All rights reserved Page 97 FM Radio Troubleshooting FM radio component layout Figure 38 Component placement ...

Page 98: ...ght 2005 Nokia Corporation All rights reserved Issue 2 05 05 Figure 39 Trace layout Figure 40 FM radio block layout Components L103 L104 L105 C107 C108 C109 C117 C162 C163 R164 R165 R166 and R167 are not shown in the picture Those components are placed in baseband sec tion near audio amplifier N150 ...

Page 99: ...am Notes to FM radio troubleshooting diagram Use 1MHz 1X probe when measuring Audio and clock signals with oscilloscope Use active RF probe when measuring frequencies with spectrum analyzer Note 1 RF test signal parameters Amplitude A 67 0 dBm Carrier frequency fc 98 000 MHz Deviation f 75 kHz Modulating frequency fm 1 000 kHz RF generator internal FM stereo mode R L pilot state ON ...

Page 100: ...udio signal from C162 and C163 Is it 1kHz 0 5 0 8Vp p Set Radio and RF generator to 87 5 and 108 0 MHz Measure Audio from C162 and C163 Are both cases 1 kHz 0 5 0 8 Vp p Check V356 V357 L356 L357 C357 C358 C362 R359 R360 Test again with 87 5 and 108 0 MHz Measure audio from C162 and C163 Both OK Check C107 C108 C109 C117 L105 C367 C378 C379 L358 Measure signal from C162 C163 Is it 1kHz 0 5 0 8 Vp ...

Page 101: ... Nokia Corporation All rights reserved Page 101 Diagrams of FM radio signals Figure 42 Oscilloscope screen shot Audio output Signal 1 Audio output from PWB test points J103 and J104 with FM test signal volume 100 Signal 2 Audio output from FM radio pins 22 and 23 same as in C162 and C163 with FM test signal ...

Page 102: ...uency from FM radio pins 3 and 4 the other ends of V356 and V357 with FM test signal RES BW 10 kHz VBW 10 kHz SWP 1 00 sec AT 0 dB REF 20 0 dBm LOG 10 dB CENTER 98 0000 MHz SPAN 300 0 kHz 71 03 dBm MKR 97 9280 MHz PEAK WA SB SC FS CORR 15 51 49 03 JUL 2002 SWEEP CONT SGL FREE RUN VIDEO LINE EXTERNAL SYNC CRD TV TRIG RES BW 10 kHz VBW 10 kHz SWP 20 0 msec AT 10 dB REF 0 dBm LOG 10 dB CENTER 196 450...

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