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Nokia NHL-4J Series Troubleshooting Instructions

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Summary of Contents for Nokia NHL-4J Series

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  • Page 6 1+/- &RPSDQ\ FRQILGHQWLDO 7URXEOHVKRRWLQJ ,QVWUXFWLRQV &&6 7HFKQLFDO 'RFXPHQWDWLRQ 5) 0HDVXUHPHQW SRLQWV )LJXUH  &RPSRQHQW SODFHPHQW  9%$77 5;VDZRXW /1$3 WR DQWHQQD 9$17 3$LQ $60RXW5; 97;% 9$17 3&57/ /1$9&& $60LQ 93&75/ 97;% 9$17 3$LQ 5;LQ 5;LQ 5)%XV(Q 5;LQ 5)%XV&ON 5)%XV5HV 5)%XV'DWD 7;&...
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  • Page 8 1+/- &RPSDQ\ FRQILGHQWLDO 7URXEOHVKRRWLQJ ,QVWUXFWLRQV &&6 7HFKQLFDO 'RFXPHQWDWLRQ  6HW 5[7[ FKDQQHO WR  RQ *60 EDQG RU  RQ *60 EDQG RU  RQ *60 'HIDXOWV  6HW 7[ 3$ PRGH WR )UHH 'HIDXOW  6HW SRZHU OHYHO WR  'HIDXOW  RQ *60 RU WR  'HIDXOW  RQ *60 RU *60...
  • Page 9 &RPSDQ\ FRQILGHQWLDO 1+/- &&6 7HFKQLFDO 'RFXPHQWDWLRQ 7URXEOHVKRRWLQJ ,QVWUXFWLRQV 7UDQVPLWWHU WURXEOHVKRRWLQJ GLDJUDP )LJXUH  7UDQVPLWWHU WURXEOHVKRRWLQJ Transmitter troubleshooting diagram TX troubleshooting TX OK Check output signal level: Check Tune +32...+33dBm @897.4 MHz (GSM900) all power TX power +29...+30dBm @1747.8 MHz levels, levels, (GSM1800 &...

  • Page 10: Troubleshooting

    1+/- &RPSDQ\ FRQILGHQWLDO 7URXEOHVKRRWLQJ ,QVWUXFWLRQV &&6 7HFKQLFDO 'RFXPHQWDWLRQ )LJXUH  +(/*$ ,& WURXEOHVKRRWLQJ HELGA troubleshooting Check with oscilloscope: -TXI/TXQ signals Baseband - - VR1, VR2, VR4, VR5, VR6 = 2.8V troubleshooting -VrefRF01 = 1.35 V -HELGA serial interface -TXP & TXC signals OK ? Check with RF probe: -4G VCO out signal...
  • Page 11 &RPSDQ\ FRQILGHQWLDO 1+/- &&6 7HFKQLFDO 'RFXPHQWDWLRQ 7URXEOHVKRRWLQJ ,QVWUXFWLRQV )LJXUH  3$ DQG $QWHQQD 6ZLWFK WURXEOHVKRRWLQJ PA & ant switch troubleshooting *(When 1kOhm passive probe is used, correct the measurement by +26dB Check with Check with RF probe oscilloscope: signal level on Replace -VANT_1 (GSM900) ant.
  • Page 12 1+/- &RPSDQ\ FRQILGHQWLDO 7URXEOHVKRRWLQJ ,QVWUXFWLRQV &&6 7HFKQLFDO 'RFXPHQWDWLRQ 3LFWXUHV RI WUDQVPLWWHU VLJQDOV )LJXUH  7UDQVPLWWHU VLJQDOV 93& P9GLY XVGLY P9GLY XVGLY ÃÃÃÃÃÃÃÃÃÃà ÃÃÃÃà ÃÃÃÃÃÃà ÃÃÃÃÃà 7; ,4 DW 5 SRZHU OHYHO KLJK 5DQGRP GDWD 93&75/ B SRZHU OHYHO KLJK DW 5& 93&75/B SRZHU OHYHO KLJK DW 5& $€Wqv‰ÃÃÃÃÃ...
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  • Page 15 &RPSDQ\ FRQILGHQWLDO 1+/- &&6 7HFKQLFDO 'RFXPHQWDWLRQ 7URXEOHVKRRWLQJ ,QVWUXFWLRQV  6HW 5[7[ FKDQQHO WR  RQ *60 EDQG  RQ *60 EDQG RU  RQ *60 'HIDXOWV $SSO\  0+] FKDQQHO    N+] RIIVHW   0+] FKDQQHO    N+] RIIVHW RU  0+] FKDQQHO    N+] ¤ G%P VLJQDO WR WKH 5)FRQQHFWRU UHPHPEHU WR FRPSHQVDWH IRU FDEOH DWWHQXDWLRQ  0HDVXULQJ ZLWK DQ RVFLOORVFRSH RQ 5;, RU 5;4 IROORZLQJ VFUHHQV VKRXOG EH VHHQ RQ D ZRUNLQJ *60  *60 RU *60 UHFHLYHU...
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  • Page 17 &RPSDQ\ FRQILGHQWLDO 1+/- &&6 7HFKQLFDO 'RFXPHQWDWLRQ 7URXEOHVKRRWLQJ ,QVWUXFWLRQV )LJXUH  5; , 4 SKDVH GLIIHUHQFH  GHJ EHWZHHQ VLJQDOV )LJXUH  ¦5; , 4 SKDVH GLIIHUHQFH  GHJ EHWZHHQ VLJQDOV§ RQ SDJH  'HWDLOHG YLHZ RI *60 FRQWLQXRXV PRGH 5; , DQG 4 VLJQDOV PHDVXUHG IURP WHVWSRLQWV 5;, DQG 5;4 VLPXOWDQHRXVO\ 8VHG FKDQQHO  LQSXW VLJQDO  0+] OHYHO ¤ G%P DW DQWHQQD SRUW $*&...
  • Page 18 1+/- &RPSDQ\ FRQILGHQWLDO 7URXEOHVKRRWLQJ ,QVWUXFWLRQV &&6 7HFKQLFDO 'RFXPHQWDWLRQ 7URXEOHVKRRWLQJ GLDJUDP IRU *60 UHFHLYHU 3KRQH LQ ¦&RQWLQXRXV§ PRGH $*& VHWWLQJ ¦§ )LJXUH  *60 UHFHLYHU WURXEOHVKRRWLQJ Apply –90dBm 942.46771MHz signal from generator to anten- na connector Oscilloscope at RX_I Change ge- Spectrumanalyzer Spectrumanalyzer Check C831,...
  • Page 19 &RPSDQ\ FRQILGHQWLDO 1+/- &&6 7HFKQLFDO 'RFXPHQWDWLRQ 7URXEOHVKRRWLQJ ,QVWUXFWLRQV 7URXEOHVKRRWLQJ GLDJUDP IRU *60 UHFHLYHU 3KRQH LQ ¦&RQWLQXRXV§ PRGH $*& VHWWLQJ ¦ )LJXUH  *60 UHFHLYHU WURXEOHVKRRWLQJ Apply –90dBm 1842.86771MHz signal from generator to anten- na connector Oscilloscope at RX_I Change ge- Spectrumanalyzer Spectrumanalyzer Check C831,...
  • Page 20 1+/- &RPSDQ\ FRQILGHQWLDO 7URXEOHVKRRWLQJ ,QVWUXFWLRQV &&6 7HFKQLFDO 'RFXPHQWDWLRQ 7URXEOHVKRRWLQJ GLDJUDP IRU *60 UHFHLYHU 3KRQH LQ ¦&RQWLQXRXV§ PRGH $*& VHWWLQJ ¦ )LJXUH  *60 UHFHLYHU WURXEOHVKRRWLQJ Apply –90dBm 1842.86771MHz signal from generator to anten- na connector Spectrumanalyzer Oscilloscope at Change ge- Spectrumanalyzer Check C831, Antenna Switch input...
  • Page 21 &RPSDQ\ FRQILGHQWLDO 1+/- &&6 7HFKQLFDO 'RFXPHQWDWLRQ 7URXEOHVKRRWLQJ ,QVWUXFWLRQV 6\QWKHVL]HU *HQHUDO LQVWUXFWLRQV IRU V\QWKHVL]HU WURXEOHVKRRWLQJ &RQQHFW WHVW MLJ WR FRPSXWHU ZLWK '$86 FDEOH RU WR )36 )ODVK 3URPPHU ZLWK ;&6 PRGXODU FDEOH 0DNH VXUH WKDW \RX KDYH 3.' GRQJOH FRQQHFWHG WR FRPSXWHUV SDUDOOHO SRUW &RQQHFW '&...
  • Page 22 1+/- &RPSDQ\ FRQILGHQWLDO 7URXEOHVKRRWLQJ ,QVWUXFWLRQV &&6 7HFKQLFDO 'RFXPHQWDWLRQ 6\QWKHVL]HU WURXEOHVKRRWLQJ GLDJUDP )LJXUH  Synthesizer troubleshooting *(When 2.5kOhm passive probe is used, correct the measurement by +34 dB Set with RF controls: Active Unti = Rx Synthesizer Operation mode = Continuous Check with RF probe: -4G VCO out signal - 3589.6 MHz (GSM900)
  • Page 23 &RPSDQ\ FRQILGHQWLDO 1+/- &&6 7HFKQLFDO 'RFXPHQWDWLRQ 7URXEOHVKRRWLQJ ,QVWUXFWLRQV 3LFWXUHV RI V\QWKHVL]HU VLJQDOV )LJXUH  0+] DW * SLQ RXW )LJXUH  0+] 5)&/. DW 5& )LJXUH   7; FKDQQHO  EXUVW PRGH 1RNLD &RUSRUDWLRQ 'UDIW   3DJH ...
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  • Page 40 1+/- &RPSDQ\ FRQILGHQWLDO 7URXEOHVKRRWLQJ ,QVWUXFWLRQV &&6 7HFKQLFDO 'RFXPHQWDWLRQ )LJXUH  )0 UDGLR EORFN OD\RXW &RPSRQHQWV / / / & & & & & & 5 5 5 DQG 5 DUH QRW VKRZQ LQ WKH SLFWXUH 7KRVH FRPSRQHQWV DUH SODFHG LQ EDVHEDQG VHF WLRQ QHDU DXGLR DPSOLILHU 1 1RNLD &RUSRUDWLRQ 3DJH ...
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  • Page 42 87.5 and 108.0 MHz. Measure audio from C162 and C163. Both OK ? Change N356. Measure signal from J103 and J104. Is it OK ? E Nokia Corporation Change OK, RETEST IN FLALI radio module TB4 1RNLD &RUSRUDWLRQ 3DJH  'UDIW  ...
  • Page 43 &RPSDQ\ FRQILGHQWLDO 1+/- &&6 7HFKQLFDO 'RFXPHQWDWLRQ 7URXEOHVKRRWLQJ ,QVWUXFWLRQV 'LDJUDPV RI )0 UDGLR VLJQDOV )LJXUH  2VFLOORVFRSH VFUHHQ VKRW $XGLR RXWSXW 6LJQDO  $XGLR RXWSXW IURP 3:% WHVW SRLQWV - DQG - ZLWK )0 WHVW VLJQDO YROXPH   6LJQDO  $XGLR RXWSXW IURP )0 UDGLR SLQV  DQG  VDPH DV LQ & DQG &  ZLWK )0 WHVW VLJQDO 1RNLD &RUSRUDWLRQ 'UDIW  ...
  • Page 44 1+/- &RPSDQ\ FRQILGHQWLDO 7URXEOHVKRRWLQJ ,QVWUXFWLRQV &&6 7HFKQLFDO 'RFXPHQWDWLRQ )LJXUH  )0 UDGLR FORFN IURP WHVW SRLQW -  N+] IUHTXHQF\ FORFN VLJQDO ZKHQ UDGLR LV RQ 15:51:49 03 JUL 2002 MKR 97.9280 MHz REF -20.0 dBm #AT 0 dB -71.03 dBm SWEEP PEAK CONT SGL...