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Nokia NPM-6 Series Troubleshooting Instructions

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NPM-6 Series Transceiver
Troubleshooting Instructions
ãNokia Corporation
Issue 1 01/03

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  • Page 1 NPM-6 Series Transceiver Troubleshooting Instructions ãNokia Corporation Issue 1 01/03...
  • Page 2 Troubleshooting Instructions CCS Technical Documentation [This page left intentionally blank] ãNokia Corporation. Page 2 Issue 1 01/03...

  • Page 3: Table Of Contents

    Synthesizer troubleshooting diagram ..............22 Pictures of synthesizer signals .................23 Baseband Troubleshooting................... 25 FM Radio troubleshooting ...................46 FM Radio component layout ..................46 FM Radio troubleshooting diagram ................48 Notes to "FM Radio troubleshooting diagram" ............48 ãNokia Corporation. Issue 1 01/03 Page 3...

  • Page 4: Rf Troubleshooting

    When using RF probe usually a good way is to use metallic tweezers to connect probe ground to PWB ground as close to measurement point as pos- sible. ãNokia Corporation. Page 4 Issue 1 01/03...

  • Page 5: Rf Key Component Placement

    CCS Technical Documentation Troubleshooting Instructions RF Key component placement Figure 1: Component placement 1 ãNokia Corporation. Issue 1 01/03 Page 5...

  • Page 6: Rf Measurement Points

    Troubleshooting Instructions CCS Technical Documentation RF Measurement points Figure 2: Component placement 2 ãNokia Corporation. Page 6 Issue 1 01/03...

  • Page 7: Egsm900 & Gsm1800 Transmitter

    - Select band "EGSM900" or "GSM 1800" or "GSM1900" (Default = "EGSM900") - Set Active unit to "Tx" (Default = "Rx") - Set Operation mode to "Burst" (Default = "Burst") - Set Tx data type to "Random" (Default = "All1") ãNokia Corporation. Issue 1 01/03 Page 7...
  • Page 8 - Set Rx/Tx channel to 37 on EGSM900 band or 700 on GSM1800 band or 661 on EGSM1900 (Defaults) - Set Tx PA mode to "Free" (Default) - Set power level to 5 (Default = 19) on EGSM900 or to 0 (Default = 15) on GSM1800 or GSM1900 ãNokia Corporation. Page 8 Issue 1 01/03...

  • Page 9: Transmitter Troubleshooting Diagram

    Base levle ~160...190 Major differences ? Check with oscilloscope: Check control loop Replace HELGA PA ctrl voltage dead components >1.5V peak OK ? OK ? Replace PA & ant switch faulty troubleshooting component(s) ãNokia Corporation. Issue 1 01/03 Page 9...
  • Page 10 -3760 MHz (GSM1900) Level >-10dBm (* Level >-10dBm OK ? *(When 1kOhm passive probe is used, correct the measurement result by +26dB Check modulator output components Replace HELGA dead OK ? Replace faulty component(s) ãNokia Corporation. Page 10 Issue 1 01/03...
  • Page 11 - VTXB = 2.8 V pulsed VANT lline components - VTxLO_GSM = 0V (GSM900) (EGSM900) OK ? OK ? Replace Replace faulty component(s) Check components around PA Replace HELGA OK ? Replace faulty component(s) ãNokia Corporation. Issue 1 01/03 Page 11...

  • Page 12: Pictures Of Transmitter Signals

    VANT_2 / GSM1800 TX at C835 VANT_3 / GSM1900 TX at C805 OV ( no signal/ Flatline on Oscilloscope screen) 500mV/div MTB 100us/div 500mV/div 100us/div VTXB_900 at C713 TXP at J504 VTXB_1800_1900 at C714 ãNokia Corporation. Page 12 Issue 1 01/03...
  • Page 13 C E N T E R 8 9 7 . 4 0 0 M H z S P A N 2 . 0 0 0 M H z Tx out signal, 900 band, burst mode, channel 37 ãNokia Corporation. Issue 1 01/03 Page 13...

  • Page 14: Egsm900, Gsm1800 And Gsm1900 Receiver

    For continuous mode: - Set Operation mode to "Continuous" - Set AGC to "12: FEG_ON + DTOS_ON + BB_30=Vgain60” (maximum gain setting used in normal mode) (Default = "14: FEG_ON + DTOS_ON + BB_42=Vgain72") ãNokia Corporation. Page 14 Issue 1 01/03...
  • Page 15 (channel 37) measured from testpoint RXI or RXQ with 942.467 MHz signal, input level –90dBm at RF-connector. Correct signal amplitudes approximately: • EGSM900~170mVpp • GSM1800~140mVpp • GSM1900~160mVpp Signal part frequency 67.7kHz sine. ãNokia Corporation. Issue 1 01/03 Page 15...
  • Page 16 Trace2: With wider time scaling both monitoring and own RX bursts are seen, 1 burst (shorter) is monitoring and 2 burst (longer) is own RX burst. Trace1: External LNA VCC supply voltage at burst mode, input level –90 dBm. Measured from testpoint LNA_VCC. ãNokia Corporation. Page 16 Issue 1 01/03...
  • Page 17 RXI and RXQ simultaneously. Used channel 37, input signal 942.467 MHz, level –90 dBm at antenna port, AGC setting Phase difference should be 90 degrees between RX I and Q signals at all bands. ãNokia Corporation. Issue 1 01/03 Page 17...

  • Page 18: Troubleshooting Diagram For Egsm900 Receiver

    * ** DC–level of RXI/RXQ in Spectrumanalyzer continuous mode will decrease 4G VCO out Synthesiszer trou- slowly. 3769.6MHz bleshooting The original level can be resto- ∼–30 dBm (* red by rewriting gain set. Check HELGA N500 ãNokia Corporation. Page 18 Issue 1 01/03...

  • Page 19: Troubleshooting Diagram For Gsm1800 Receiver

    4G VCO out Synthesiszer trou- * ** DC–level of RXI/RXQ in 3769.6MHz bleshooting continuous mode will decrease ∼–30 dBm (* slowly. The original level can be resto- red by rewriting gain set. Check HELGA N500 ãNokia Corporation. Issue 1 01/03 Page 19...

  • Page 20: Troubleshooting Diagram For Gsm1900 Receiver

    4G VCO out Synthesiszer trou- 3685.6MHz bleshooting * ** DC–level of RXI/RXQ in ∼–30 dBm (* continuous mode will decrease slowly. The original level can be resto- red by rewriting gain set. Check HELGA N500 ãNokia Corporation. Page 20 Issue 1 01/03...

  • Page 21: Synthesizer

    - Set Active unit to "Rx" (Default = "Rx") - Set Operation mode to "Continuous" (Default = "Burst") - Set Rx/Tx channel to 37 on EGSM900 band, 700 on GSM1800 band, 661 on GSM1900 band (Defaults) ãNokia Corporation. Issue 1 01/03 Page 21...

  • Page 22: Synthesizer Troubleshooting Diagram

    VCO pin solder joints 0V ? OK ? Replace faulty component(s) Check with oscilloscope: Check VCO control VCO control voltage loop components from VCO pin OK ? >4.0 V ? Replace ãNokia Corporation. Page 22 Issue 1 01/03...

  • Page 23: Pictures Of Synthesizer Signals

    CCS Technical Documentation Troubleshooting Instructions Pictures of synthesizer signals Figure 15: 26MHz at G501 pin out Figure 16: 26MHz RFCLK at R420/C420 Figure 17: 1800 TX, channel 512, burst mode ãNokia Corporation. Issue 1 01/03 Page 23...
  • Page 24 34.0 d B R B W 10 kH z VB W 10 kH z SW P 50 m s C EN TER 3. 685600 G H z SPA N 1. 000 M H z ãNokia Corporation. Page 24 Issue 1 01/03...

  • Page 25: Baseband Troubleshooting

    Check X100 zero? Phone is Phone current is Is phone flash jammed <50mA proramming OK Flash faults Check BSI line, X100, Is phone in LOCAL C240,R203, Change UEM mode C100,R206 Repair Ok retest ãNokia Corporation. Issue 1 01/03 Page 25...
  • Page 26 Is it OK ? If OK change G501 Is it OK ? Check R420, C420. If OK change N500 Measure PURX signal from testpoint J402. Change UEM Is it HIGH (1.8V) ? Phone is jammed ãNokia Corporation. Page 26 Issue 1 01/03...
  • Page 27 Change Is it OK ? read from testpoint J412. Is it OK ? Measure FBUSTx Change signal during phone info read from testpoint J411. Is it OK ? Change Retest ãNokia Corporation. Issue 1 01/03 Page 27...
  • Page 28 Measure FBusTx line during FBUSTx line. If Flash programming (TP 411) Is it HIGH (1.8V)? Change UEM Phone doesn't set FlashBus TxD line LOW after the Change UPP line has been set HIGH Flash faults ãNokia Corporation. Page 28 Issue 1 01/03...
  • Page 29 CCS Technical Documentation Troubleshooting Instructions Flash faults Wrong manufacturer Change Flash ID or Device ID Phone is totally dead Phone is dead Phone doesn't start Phone is up or phone is jammed jammed Retest ãNokia Corporation. Issue 1 01/03 Page 29...
  • Page 30 OK change R388. If Is it 3V (1.8V) still wrong VSIM change UEM Check SIM Check SIM lines. If power up sequency. OK change R388. If Is it OK ? still fail change UEM. Change UPP ãNokia Corporation. Page 30 Issue 1 01/03...
  • Page 31 Measure Check V311, V312, voltage between J303 R311, R312. and J302 .Is it Retest typ. 7.2V ? Measure voltage between X302, Change X302. pin 9. Is it Retest typ. 7.2V ? Display faults ãNokia Corporation. Issue 1 01/03 Page 31...
  • Page 32 Measure Check V311, V312, voltage between J303 R311, R312. and J302 .Is it Retest typ. 7.2V ? Measure voltage between X302, Change X302. pin 9. Is it Retest typ. 7.2V ? Display faults ãNokia Corporation. Page 32 Issue 1 01/03...
  • Page 33 (2.78V) and VDD/J300 VFLASH1 and VIO. If (1.8V).Are lines are OK change they OK ? Check signals RESX/J306, Check lines of display SDA/J305,SCLK/J307, control. If OK change CSX/J304. Is it OK ? Change X302 ãNokia Corporation. Issue 1 01/03 Page 33...
  • Page 34 GND pads. Is it ~1.38V ? If OK change UEM Measure Check L102, C116, MICB2 voltage from C150, R153, R154 XMIC (L102 input). and line. Is it ~2.2V ? If OK change UEM. Audio faults Earpiece ãNokia Corporation. Page 34 Issue 1 01/03...
  • Page 35 C152, C153, R156, voltage from J110 pad. R157, R176. Is it ~1.38V ? If OK change UEM Check C151, R157, C105,C154 and line. If OK change UEM if still fail change UPP Audio faults ãNokia Corporation. Issue 1 01/03 Page 35...
  • Page 36 (X101, 11/12) Measure sine Measure sine signal from earpiece signal from UEM Change UEM pads (J310,J311). (R151,R152). Is It ~880mVpp ? Is it ~130mVpp ? Check R151,R152, C155, L150 and lines. Change UPP Retest ãNokia Corporation. Page 36 Issue 1 01/03...
  • Page 37 Check C161, C160,R163, Check signal in C161. C169. Is it OK ? If OK then change UEM Check IHF PA Change IHF PA controls on J152, (N150) J523,J154. Is it OK ? Change UPP ãNokia Corporation. Issue 1 01/03 Page 37...
  • Page 38 Is it HIGH? If OK change UEM Measure voltage from S302 when powerkey is Phone is pressed. jammed Is it HIGH ? Check S302. Change S302 Is it OK ? Keyboard Phone is faults dead ãNokia Corporation. Page 38 Issue 1 01/03...
  • Page 39 Z300. If still fails change Is it ~1.8V ? UPP. Check ROW0-4 lines, When keypad is X301. If OK change pressed, the LED's are Z300. If still fails change turned on ? UPP. Keyboard Display faults faults ãNokia Corporation. Issue 1 01/03 Page 39...
  • Page 40 If still fail change UPP Check S301 and COL4 Measure COL4 from lines. If OK change S301 when key is pressed. Z300. Is there 50us pulse ? If still fail change UPP Change UPP Keyboard faults ãNokia Corporation. Page 40 Issue 1 01/03...
  • Page 41 Is it typ. 8.6V ? R325, C304. If OK change N300 Measure voltage between Check V313, V314, V313/3. Is it R313, R314 typ. 7.2V ? Measure voltage X301, pin 1.Is it Check X301, R307 typ. 7.2V ? ãNokia Corporation. Issue 1 01/03 Page 41...
  • Page 42 LOW to HIGH. Is L106,R103, R109, it OK ? C103. If OK change UEM. Retest Check C107, C108, L103, C114, Audio OK ? C119, R105, R106, R164, R165, C157 Accessory if Audio fault fault ãNokia Corporation. Page 42 Issue 1 01/03...
  • Page 43 L106,R103, R109, C103. If OK change UEM. Retest. Check C107, C108, C109, C117, L103, L104, C113, C114, C118, C119, R105, Audio OK ? R106, R107, R108, R164,R165, R166, R167, C157, C158 Audio fault ãNokia Corporation. Issue 1 01/03 Page 43...
  • Page 44 C304. 0, R301, R302, R303, Is it typ. 8.6V ? R325, C304. If OK change N300 Measure Check V320, V317, voltage V317/3 .Is it R315, R316 typ. 7.2V ? Change V318,V319 Display faults ãNokia Corporation. Page 44 Issue 1 01/03...
  • Page 45 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. ãNokia Corporation. Issue 1 01/03 Page 45...

  • Page 46: Fm Radio Troubleshooting

    Troubleshooting Instructions CCS Technical Documentation FM Radio troubleshooting FM Radio component layout Figure 20: Component placement ãNokia Corporation. Page 46 Issue 1 01/03...
  • Page 47 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. ãNokia Corporation. Issue 1 01/03 Page 47...

  • Page 48: Fm Radio Troubleshooting Diagram

    - Amplitude, A, –67.0 dBm - Carrier frequency, f , 98,000 MHz - Deviation, ,f, 75 kHz - Modulating frequency f , 1,000 kHz (RF generator internal) - FM stereo, mode R=L, pilot state ON ãNokia Corporation. Page 48 Issue 1 01/03...
  • Page 49 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 ãNokia Corporation. Issue 1 01/03 Page 49...
  • Page 50 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 ãNokia Corporation. Page 50 Issue 1 01/03...
  • Page 51 TV TRIG #RES BW 10 kHz #VBW 10 kHz #SWP 20.0 msec Figure 27: VCO frequency from FM radio pins 3 and 4, the other ends of V356 and V357, with FM test signal ãNokia Corporation. Issue 1 01/03 Page 51...
  • Page 52 Troubleshooting Instructions CCS Technical Documentation ãNokia Corporation. Page 52 Issue 1 01/03...

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