Nokia NSB-9 Troubleshooting Instructions Download Page 40

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NSB-9

Troubleshooting Instructions

CCS Technical Documentation

Page 40



Nokia Corporation

Issue 1 04/03

Figure 44: FM radio testpoints

AUDIO AMPLIFIER

HSEAR R

VFLASH2

FM RADIO R

FM RADIO L

HSEAR L

J357, FMCTRLCLK

J358, FMWREN

J356, FMCTRLDA

J359, FMCLK

J104, HSEAR P

J103, HSEAR R N

J105, FM RADIO

ANTENNA INPUT

Summary of Contents for NSB-9

Page 1: ...CCS Technical Documentation NSB 9 Series Transceivers Issue 1 04 03 Nokia Corporation Troubleshooting Instructions ...

Page 2: ...NSB 9 Troubleshooting Instructions CCS Technical Documentation Page 2 Nokia Corporation Issue 1 04 03 This page left intentionally blank ...

Page 3: ...ng 6 Phoenix commands 6 TX1900 TROUBLESHOOTING 9 Phoenix commands 9 RX850 troubleshooting 12 Phoenix commands 12 RX1900 Troubleshooting 15 Phoenix commands 15 Figures of signals and voltages in testpoints 18 FM Radio Troubleshooting 35 Introduction 35 EQUIPMENT NEEDED 35 FM RADIO SCHEMATICS 36 FM Radio layout 39 REFERENCE MEASUREMENT RESULTS 42 Baseband Troubleshooting 45 PWB Test points 45 Troubl...

Page 4: ... 3 9 VDC 3A Radio Communication Tester with GSM850 1900 option Spectrum analyzer and probe with frequency range up to 4 GHz Digital multimeter DMM Oscilloscope with 10 1 probe PC with Phoenix software USEFUL HINTS Sometimes it is difficult to get reliable measurement results at high frequencies 500 4000 MHz because of probe properties etc If measurement results of faulty phone don t correspond to ...

Page 5: ...nes In this case Hagar shall be replaced RX AM Suppression Calibration RX AM Suppression Calibration limits LOPI LOMI LOPQ and LOMQ are so wide that the calibration results can t exceed the limits Instead RSSI value measured after tuning may be too high Also in this case replacing Hagar may improve the result RX Band Filter Response Compensation If RX Calibration results are ok but this compensati...

Page 6: ...ctions CCS Technical Documentation Page 6 Nokia Corporation Issue 1 04 03 shall be checked TX 850 Troubleshooting Phoenix commands RF Controls Band GSM 850 TX Burst mode Channel 190 TX Power Level 10 TX PA Mode Free TX Data Random ...

Page 7: ...eband troubleshooting UEM Check TX IQ signals at TP21 9 8 Start baseband troubleshooting UEM Check TX modulator output signal at TP24 836 6 MHz 9 8 Check Hagar ASIC supply voltages at TP4 TP5 TP6 TP8 2 78 VDC 3 TP10 1 35 VDC 2 TP1 4 75 VDC 3 2 8 Start baseband troubleshooting UEM 9 Check SHF VCO output signal at TP40 3346 4 MHz 8 Check VCO supply voltage at TP7 2 78 VDC 3 9 8 9 Check VCO control v...

Page 8: ...P9 VBATT 3 9 VDC 8 9 8 Check VBATT path from battery connector to PA Check PA control voltage at TP27 8 9 Change PA N700 Check TXC signal at TP23 9 Check coupler output signal at TP61 836 6 MHz 8 9 Change coupler L750 Check TX output signal at TP30 836 6 MHz 8 9 Check antenna switch control signal at TP62 2 78 V squarewave Change antenna switch Z500 9 8 Change Hagar ASIC N600 TX is ok 9 Change Hag...

Page 9: ...ntation Troubleshooting Instructions NSB 9 Issue 1 04 03 Nokia Corporation Page 9 TX1900 TROUBLESHOOTING Phoenix commands RF Controls Band GSM 1900 TX Burst mode Channel 661 TX Power Level 10 TX PA Mode Free TX Data Random ...

Page 10: ...aseband troubleshooting UEM Check TX IQ signals at TP21 9 8 Start baseband troubleshooting UEM Check TX modulator output signal at TP22 1880 MHz 9 8 Check Hagar ASIC supply voltages at TP4 TP5 TP6 TP8 2 78 VDC 3 TP10 1 35 VDC 2 TP1 4 75 VDC 3 2 8 Start baseband troubleshooting UEM 9 Check SHF VCO output signal at TP40 3760 MHz 8 Check VCO supply voltage at TP7 2 78 VDC 3 9 8 9 Check VCO control vo...

Page 11: ...TP9 VBATT 3 9 VDC 8 9 8 Check VBATT path from battery connector to PA Check PA control voltage at TP26 8 9 Change PA N700 Check TXC signal at TP23 9 Check coupler output signal at TP28 1880 MHz 8 9 Change coupler L750 Check TX output signal at TP30 1880 MHz 8 9 Check antenna switch control signal at TP29 2 78 V squarewave Change antenna switch Z500 9 8 Change Hagar ASIC N600 TX is ok 9 Change Haga...

Page 12: ...roubleshooting Instructions CCS Technical Documentation Page 12 Nokia Corporation Issue 1 04 03 RX850 troubleshooting Phoenix commands RF Controls Band GSM 850 RX Continuous mode Channel 190 AGC 8 FEG ON 46 dB ...

Page 13: ...bleshooting UEM Check RX signal at antenna switch output TP63 881 667 MHz 9 8 Change antenna switch Z500 Check RX signal at dual filter output TP64 881 667 MHz 9 8 Change dual filter Z520 Check LNA voltages at TP65 1 VDC TP67 2 6 VDC Check RX signal at LNA output TP66 881 667 MHz 9 8 8 9 Check LNA V500 and other components around it If R501 and R502 are ok change Hagar ASIC N600 Check RX signal at...

Page 14: ...4 TP5 TP6 TP8 2 78 VDC 3 TP10 1 35 VDC 2 TP1 4 75 VDC 3 2 8 Start baseband troubleshooting UEM 9 Check SHF VCO output signal at TP40 3526 4 MHz 8 Check VCO supply voltage at TP7 2 78 VDC 3 9 8 9 Check VCO control voltage at TP41 1 8 VDC 200 mV 8 9 Change Hagar ASIC N600 Change SHF VCO G650 Check SDATA at TP51 SCLK TP52 SLE TP53 8 Start baseband troubleshooting UPP 9 Change Hagar ASIC N600 Start ba...

Page 15: ...nical Documentation Troubleshooting Instructions NSB 9 Issue 1 04 03 Nokia Corporation Page 15 RX1900 Troubleshooting Phoenix commands RF Controls Band GSM 1900 RX Continuous mode Channel 661 AGC 8 FEG ON 46 dB ...

Page 16: ...roubleshooting UEM Check RX signal at antenna switch output TP31 1960 067 MHz 9 8 Change antenna switch Z500 Check RX signal at dual filter output TP32 1960 067 MHz 9 8 Change dual filter Z520 Check LNA voltages at TP34 2 6 VDC TP35 0 VDC Check RX signal at LNA output TP33 1960 067 MHz 9 8 8 9 Check LNA V550 and other components around it If R551 is ok change Hagar ASIC N600 Check RX signal at fil...

Page 17: ...P4 TP5 TP6 TP8 2 78 VDC 3 TP10 1 35 VDC 2 TP1 4 75 VDC 3 2 8 Start baseband troubleshooting UEM 9 Check SHF VCO output signal at TP40 3920 MHz 8 Check VCO supply voltage at TP7 2 78 VDC 3 9 8 9 Check VCO control voltage at TP41 3 3 VDC 200 mV Change Hagar ASIC N600 Change SHF VCO G650 Check SDATA at TP51 SCLK TP52 SLE TP53 8 Start baseband troubleshooting UPP 9 Change Hagar ASIC N600 Start baseban...

Page 18: ...oubleshooting Instructions CCS Technical Documentation Page 18 Nokia Corporation Issue 1 04 03 Figures of signals and voltages in testpoints Figure 5 TP20 26 MHz VCTCXO output signal Figure 6 TP21 TX I Q signal ...

Page 19: ...CCS Technical Documentation Troubleshooting Instructions NSB 9 Issue 1 04 03 Nokia Corporation Page 19 Figure 7 TP22 TX1900 modulator output signal Figure 8 TP23 TXC signal from UEM ASIC ...

Page 20: ...NSB 9 Troubleshooting Instructions CCS Technical Documentation Page 20 Nokia Corporation Issue 1 04 03 Figure 9 TP24 TX850 modulator output signal Figure 10 TP25 TX1900 PA output signal ...

Page 21: ...CCS Technical Documentation Troubleshooting Instructions NSB 9 Issue 1 04 03 Nokia Corporation Page 21 Figure 11 TP 26 TX1900 PA power control signal Figure 12 TP27 TX850 PA power control signal ...

Page 22: ...9 Troubleshooting Instructions CCS Technical Documentation Page 22 Nokia Corporation Issue 1 04 03 Figure 13 TP 28 TX1900 signal at coupler output Figure 14 TP29 Antenna switch control signal in TX1900 mode ...

Page 23: ...CCS Technical Documentation Troubleshooting Instructions NSB 9 Issue 1 04 03 Nokia Corporation Page 23 Figure 15 TP30 TX850 signal at antenna pad Figure 16 TP30 TX1900 signal at antenna pad ...

Page 24: ... Troubleshooting Instructions CCS Technical Documentation Page 24 Nokia Corporation Issue 1 04 03 Figure 17 TP31 RX1900 signal at antenna switch output Figure 18 TP32 RX1900 signal at dual SAW filter output ...

Page 25: ...CS Technical Documentation Troubleshooting Instructions NSB 9 Issue 1 04 03 Nokia Corporation Page 25 Figure 19 TP33 RX1900 signal at LNA output Figure 20 TP34 TP35 RX1900 LNA control signals Burst mode ...

Page 26: ...NSB 9 Troubleshooting Instructions CCS Technical Documentation Page 26 Nokia Corporation Issue 1 04 03 Figure 21 TP36 RX1900 signal at 2nd band filter output Figure 22 TP37 RX IQ signal Burst Mode ...

Page 27: ...ation Troubleshooting Instructions NSB 9 Issue 1 04 03 Nokia Corporation Page 27 Figure 23 TP37 RX IQ signal GSM850 Continuous Mode Signal level 90 dBm Figure 24 TP37 RX IQ signal GSM1900 Continuous Mode Signal level 90 dBm ...

Page 28: ...B 9 Troubleshooting Instructions CCS Technical Documentation Page 28 Nokia Corporation Issue 1 04 03 Figure 25 TP40 SHF VCO output signal in TX850 mode Figure 26 TP40 SHF VCO output signal in TX1900 mode ...

Page 29: ...S Technical Documentation Troubleshooting Instructions NSB 9 Issue 1 04 03 Nokia Corporation Page 29 Figure 27 TP40 SHF VCO output signal in RX850 mode Figure 28 TP40 SHF VCO output signal in RX1900 mode ...

Page 30: ... 9 Troubleshooting Instructions CCS Technical Documentation Page 30 Nokia Corporation Issue 1 04 03 Figure 29 TP51 52 53 SDATA SCLK and SLE signals in GSM850 1900 mode Figure 30 TP60 TX850 PA Output Signal ...

Page 31: ... Technical Documentation Troubleshooting Instructions NSB 9 Issue 1 04 03 Nokia Corporation Page 31 Figure 31 TP61 TX850 signal at coupler output Figure 32 TP62 Antenna switch control signal in TX850 mode ...

Page 32: ... Troubleshooting Instructions CCS Technical Documentation Page 32 Nokia Corporation Issue 1 04 03 Figure 33 TP 63 RX850 signal at antenna switch output Figure 34 TP 64 RX850 signal at dual SAW filter output ...

Page 33: ...CCS Technical Documentation Troubleshooting Instructions NSB 9 Issue 1 04 03 Nokia Corporation Page 33 TP 65 67 RX850 LNA control signals Burst mode Figure 35 TP 66 RX850 signal at LNA output ...

Page 34: ...NSB 9 Troubleshooting Instructions CCS Technical Documentation Page 34 Nokia Corporation Issue 1 04 03 Figure 36 TP68 RX850 signal at 2nd band filter output ...

Page 35: ...ooting Introduction This document describes the methods of FM radio troubleshooting for Iris NSB 9 trans ceiver EQUIPMENT NEEDED NSB 9 module jig MJS 48 power and DAU 9S cables DC power supply 3 9 VDC 3A Digital multimeter DMM Audio Analyzer Oscilloscope with 1 MHz 1 1 probe PC with Phoenix software Headset HDB 4 or HDS 3 ...

Page 36: ...ing Instructions CCS Technical Documentation Page 36 Nokia Corporation Issue 1 04 03 FM RADIO SCHEMATICS Figure 37 Input signal connection to antenna headset cable Figure 38 Input signal single to differential conversion ...

Page 37: ...CCS Technical Documentation Troubleshooting Instructions NSB 9 Issue 1 04 03 Nokia Corporation Page 37 Figure 39 VCO components Figure 40 Connection to UPP ...

Page 38: ...NSB 9 Troubleshooting Instructions CCS Technical Documentation Page 38 Nokia Corporation Issue 1 04 03 Figure 41 Audio signal output ...

Page 39: ...1 04 03 Nokia Corporation Page 39 FM Radio layout Figure 42 Components Figure 43 Components on PWB Note Components L105 L106 L107 L108 L109 C108 C109 C110 C111 R164 R165 R166 R167 R170 and R171 are not shown in the picture Components are placed near audio amplifier N150 ...

Page 40: ...cumentation Page 40 Nokia Corporation Issue 1 04 03 Figure 44 FM radio testpoints p AUDIO AMPLIFIER HSEAR R VFLASH2 FM RADIO R FM RADIO L HSEAR L J357 FMCTRLCLK J358 FMWREN J356 FMCTRLDA J359 FMCLK J104 HSEAR P J103 HSEAR R N J105 FM RADIO ANTENNA INPUT ...

Page 41: ...ure UPP 8 Check audio signal at audio amplifier N150 input C170 and C171 Is the frequency 1 kHz and amplitude 0 5 0 8 Vpp 9 Set radio channel and RF generator to 88 1 Mhz Re check audio signal level 0 5 0 8 Vpp at C170 and C171 Re check also in 107 9 MHz 9 Audio amplifier failure N150 9 Check RF input components C108 C111 L109 C367 C378 379 and L358 Re check audio signal at C170 and C171 Is the fr...

Page 42: ...42 Nokia Corporation Issue 1 04 03 REFERENCE MEASUREMENT RESULTS Figure 46 Audio output signal Signal 1 Audio output signal at PWB test points J103 and J104 FM test signal audio volume 100 Signal 2 Audio output at FM radio pins 22 and 23 same signal as in C170 and C171 ...

Page 43: ...9 32 kHz clock signal when radio is turned on Figure 48 RF input signal FM modulated test signal at FM radio ASIC pin 37 at the other end of L358 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 ...

Page 44: ...ignal VCO frequency at FM radio pins 3 and 4 at the other ends of V356 and V357 RES BW 10 kHz VBW 10 kHz SWP 20 0 msec AT 10 dB REF 0 dBm LOG 10 dB CENTER 196 450 MHz SPAN 1 000 MHz 9 40 dB MKR 196 440 MHz MEAS UNCAL PEAK WA SB SC FS CORR 10 46 24 03 JUL 2002 SWEEP CONT SGL FREE RUN VIDEO LINE EXTERNAL SYNC CRD TV TRIG ...

Page 45: ...ting Instructions NSB 9 Issue 1 04 03 Nokia Corporation Page 45 Baseband Troubleshooting PWB Test points Figure 50 Flash programming testpoints FBUS RX FBUS TX VPP MBUS GND J1 RESET J2 RFBUSDA J3 RFBUSCLK J4 RFBUSEN1 J102 BTEMP VBAT J101 BSI ...

Page 46: ...gure 51 Baseband testpoints J410 MBUSRX J412 FBUSRX J409 MBUSTX J100 VBAT J404 SLEEPCLK J411 FBUSTX J415 DBUSEN1X J402 PURX J403 SLEEPX VFLASH2 VCORE VANA VFLASH1 VIO VBATT3 VBATT1 VBATT4 VBATT2 J417 EXTRDX J416 EXTWRX J420 FLSCSX J418 FLS2CSX J419 FLSCLK J413 DBUSCLK J414 DBUSDA J405 UEMINT VBATT6 VBATT5 ...

Page 47: ...ocumentation Troubleshooting Instructions NSB 9 Issue 1 04 03 Nokia Corporation Page 47 Figure 52 SIM testpoints J404 SLEEPCLK J407 CBUSDA J402 PURX VIO VSIM J406 CBUSCLK J408 CBUSENX VSIM SIMCLK SIMRST SIMIODA SIMRST ...

Page 48: ...e 48 Nokia Corporation Issue 1 04 03 Figure 53 Miscellanous testpoints FLIP CLOCK FLIP VBAT FLIP GND FLIP DATA N301 HALL SENSOR J306 J302 J305 J301 EARP EARN J304 J308 J303 J307 J153 CLK J152 ENB J154 DATA Audio amplifier control lines some are placed under dome sheet ...

Page 49: ...oubleshooting Instructions NSB 9 Issue 1 04 03 Nokia Corporation Page 49 J150 IHF J151 IHF VIBRA VBAT UEM VIBRA X102 PIN 1 GND VCHAR J107 MICP J106 MICN J331 HALL SENSOR OUTPUT V319 UPPER FLIP VBAT SWITCH V319 LOWER FLIP VBAT SWITCH ...

Page 50: ...V Signal Name Function Test Point Signal Characteristics Notes VSIM Power supply for SIM card C390 conn 1 8 or 3 0V Level depend on SIM card type SIMRST SIM reset C387 conn digital signal Level depend on SIM card type SIMIODAO SIM data C386 conn digital signal Level depend on SIM card type SIMCLKO SIM clock C388 conn 3 25 MHz digital clock signal Level depend on SIM card type SLEEPX Sleep mode con...

Page 51: ...8 0V digital signal EXTRDX Flash memory read enable J417 1 8 0V digital signal FLSCSX Flash memory chip select J420 1 8 0V digital signal FLSCLK Flash memory clock in burst mode J419 0 1 8V 35 MHz digital clock signal Burst mode only when read EXTWRX Flash memory write enable J416 1 8 0V digital signal Signal Name Function Test Point Signal Characteristics Notes VBAT Battery voltage for UEM power ...

Page 52: ...y seems to be faulty The instructions are divided into following sections 1 Phone is dead 2 Flash faults 3 Phone is jammed 4 Charging fault 5 Sim card fault 6 Audio faults 7 Display faults 8 Keypad fault 9 FM radio faults The first thing to do is to carry out a thorough visual check of the module Ensure in par ticular that 1 there is no any mechanical damages 2 soldered joints are OK ...

Page 53: ...4 03 Nokia Corporation Page 53 Main troubleshooting tree TOP 2 Phone is totally dead Phone doesn t start up or the phone is jammed Charging doesn t work Phone is dead Flash faults Phone is jammed Charging fault No No No No Yes Yes Yes Yes TOP Flash programming doesn t work ...

Page 54: ...e 54 Nokia Corporation Issue 1 04 03 TOP 2 Phone doesn t read SIM card Audio faults Display or LED s doesn t work Keypad doesn t work SIM card fault Audio faults Display faults Keypad faults Yes FM Radio doesn t work FM Radio faults No No No No Yes Yes Yes Yes No END ...

Page 55: ...rrent is 0mA Phone current is 26mA Is phone in LOCAL mode Phone current is 26 30mA Check BSI line X100 C114 R202 C240 R206 Are they OK Is phone flash programing OK No No Yes No Yes Yes Yes Yes Yes No No Check X100 solder Check L260 L265 and C260 C265 Check all VBAT lines Change defect part Change UEM Flash fauItIs Retest No Phone is dead OK ...

Page 56: ... programming Is it OK The phone does not set FBUSTX line low after the line has been high The phone does not set FBUSTX line high after the startup Flash faults page 2 Change UPP Check BSI line X100 C114 C240 R202 R206 Change UPP Check R109 if OK Change UEM Yes Yes Yes Yes No No No No Measure FBUSTX line during Flash programming from testpoint J411 Is it 1 8V ...

Page 57: ...uctions NSB 9 Issue 1 04 03 Nokia Corporation Page 57 Wrong manufactor ID and Device ID Phone doesn t start up or the phone is jammed Change FLASH Phone is dead Phone is jammed No No No Yes Yes Flash faults page 2 Is the phone totally dead Retest Yes ...

Page 58: ...igh 1 8V Measure 13MHz RFClk from R420 Is it OK Measure 26MHz RFClk from C660 Is it OK Measure 32 6kHz Sleep Clk from B200 Is it OK Check VBATT 1 6 VIO VCORE FLASH1 VANA VR3 lines Are they OK Check L260 L265 C260 C265 BSI BTEMP lines and VBATT lines Check BSI BTEMP lines If OK and UEM regulators are not working Change UEM Check B200 C209 C210 Check R420 C420 If OK change N600 Change UEM Check R661...

Page 59: ...point J413 Is it OK Read phone info Is it OK Measure FBUSTX signal during phone info read from testpoint J411 Is it OK Measure FBUSRX signal during phone info read from testpoint 412 Is it OK Measure watchdog signal CBUSDA from testpoint J407 Is it OK Change UPP Change UEM Change UPP Change UEM No Yes Yes Yes No Yes No No Retest Yes Phone shutdown after 30s OK ...

Page 60: ...ture Is it 25 C 0319 Retest Yes Yes Yes No No No Yes Check X101 X102 F100 L100 V100 C100 C101 and charger line Retest Check R200 Is it OK Change defected part recalibrate charge current voltage Yes No Yes Re calibrate BTEMP and retest Change defected part Change UEM Change defect re calibrate and retest No Connect charger ACP 7 Check X100 C114 R202 C220 R207 and line Are they OK Measure charger cu...

Page 61: ...Measure VSIM voltage at X386 Is it 3 0V Check SIM power up sequence Is it OK Change defected part Change UPP Check VSIM line X386 C390 C203 If OK change R388 If still fail change UEM Check SIM lines X386 If OK change R388 If still fail change UEM Try to set phone in local mode Is it OK Check BSI line including X100 C100 C240 R202 and R206 If OK change UEM Yes Yes Yes Yes Yes No No No No ...

Page 62: ...t voltage from earpiece pads against GND Is it 1 36V Measure MICB2 voltage from XMICP X102 pin10 Is it 1 9V with headset Retest Check L150 C180 C181 R152 R153 and line If OK change UEM Check L103 R161 C163 C162 R156 R157 C158 C152 C159 and line If OK change UEM Audio faults 2 Earpiece 2 Yes Yes Yes Yes No No No No Set phone to LOCAL mode Set routing EXT IN HP OUT by using phoenix Audio Routing and...

Page 63: ...p audio signal in XMICP line and ground line to XMICN line Measure differential sine signal from earpiece pads Is it 190mVpp Measure signal from C152 XMICP Is it 110mVpp Check L150 R152 R153 C180 C181 If still fail change UEM Check L103 L104 R161 C163 C162 R156 R157 C158 C152 C159 and corresponding componenets from XMICN line Retest No Yes Yes No ...

Page 64: ...J152 J153 J154 Is it OK IHF 2 Yes No Set phone in LOCAL mode Use Phoenix Audio Routing and Test Signals test Set output path as IHF speaker 1 Check L151 L152 R162 C172 and line OK No Change defected parts No Check lines if OK change UPP If NOK change radio module TB9 Yes Yes Change N150 Try to change IHF speaker Is it working now Retest Yes No Check IHF speaker connections Is it OK No Change defec...

Page 65: ... and XAUDIO 7 line Are they OK No IHF 2 Measure differential sine signal from IHF speaker pads J150 J151 Is it 810mVpp Retest No Yes Use Phoenix Audio Routing and Test Signals test Use internal sine wave generator and set signal frequency to 1kHz and peak level to 4000 Hex Change defect part and retest Change UEM and retest Yes ...

Page 66: ...o out 2 Yes No Set phone in LOCAL mode Use Phoenix Audio Routing and Test Signals test Set output path as HP speaker Insert headset to route audio to HSEAR 2 Check X102 L103 L106 C108 C111 C115 C118 R111 R114 C165 C167 R164 R167 and line OK No Change defected parts No Check lines if OK change UPP If NOK change radio module TB9 Yes Yes Change N150 Check system connector and soldering Are they OK No...

Page 67: ...e Are they OK No Ext audio out 2 Measure differential sine signal from HSEAR P N and HSEAR R P N speaker pads Is it 60mVpp Yes Retest No Yes Use Phoenix Audio Routing and Test Signals Test Use internal sine wave generator and set signal frequency to 1kHz and peak level to 4000 Hex Change defect part and retest Change UEM and retest Yes ...

Page 68: ...Ext out Measure sine signal from HSEAR and HSEAR R lines Is it 160mVpp with headset Check R154 C150 and line If OK change UEM Yes No Check microphone connector Is it OK Change defect part and retest No No Measure MICB1 voltage from MICP J107 Is it 2 1V Check L110 C153 R155 C154 and line If OK change UEM Retest Yes Yes No Connect external 1kHz sine 30mVpp audio signal in MICP line and ground line t...

Page 69: ...es No Check if external audio device is OK Retest with undamaged ext audio device No Yes Measure MICB2 voltage from XMICP X102 pin 10 Is it 2 0V with headset Check L103 R161 C163 C162 R157 C158 and line If OK change UEM Retest Yes Yes No Connect external 1kHz sine 200mVpp audio signal in XMICP line and ground line to XMICN line Measure signal from C152 Is it 110mVpp Check C159 If OK change UEM Yes...

Page 70: ...D s turned ON Try to change display module Is it working now Measure signal from X300 pin 10 Is it 10 14V Check R306 If OK measure VBAT from N300 pin 1 Is it OK Check LED driver control signal from N300 pin 8 Is it high Retest Check X300 Check control signal line If OK change UEM Check C300 and VBAT line Check N300 C301 V300 L300 C302 R318 and change defect componenet Check X300 Display faults 2 N...

Page 71: ...splay faults 2 Does the display start Measure VDD 2 78V and VDDI 1 8V Are they OK Measure XRES XCS SI Are voltage levels 1 8V Try to chance the display module Is it working now Check C305 C306 and lines If OK change UEM Check X300 and lines If OK change UPP Check X300 Retest END Yes Yes Yes Yes No No No No ...

Page 72: ...03 Keypad faults Keypad faults Is the power key working Measure voltage from S336 Is it high Measure voltage from S336 when key is pressed Is it high Check S336 Is it OK Check R317 C311 S336 and line If OK change UEM Change S336 Phone is dead Keypad faults 2 Phone is jammed Yes Yes Yes Yes No No No No ...

Page 73: ... they OK Measure Flip VBAT voltage between J301 and J307 Should be same as engine VBAT voltage Change flip Is it OK now Yes No Measure voltage levels from flip data J303 and clock J305 Is it 1 8V Check with oscilloscope that data is flowing data shape and levels are OK Retest Yes Yes Yes Change defected part either flip or A cover Retest Flip faults 1 Yes No No No No Yes No Check R300 R302 Z300 ge...

Page 74: ... they OK Measure Flip VBAT voltage between J302 and J308 Should be same as engine VBAT voltage Change flip Is it OK now Yes No Measure voltage levels from flip data J304 and clock J306 Is it 1 8V Check with oscilloscope that data is flowing data shape and levels are OK Retest Yes Yes Yes Change defected part either flip or A cover Retest Flip faults 2 Yes No No No No Yes Check L310 L312 R300 R302 ...

Page 75: ...e UPP Change defect part Measure voltage of keypad ROW where faulty key is located Is it 1 8V Check keypad COLUMN where faulty key is located Is there a pulse sequency every 50ms when faulty key is pressed down Change UPP Check switch and lines of faulty key In case of column 4 or 5 check also R330 R331 R315 If OK change Z301 If still not OK change UPP Check keypad switch and lines R330 R331 R315 ...

Page 76: ...s Check VBAT line C201 C202 If not OK change defect part and retest Check voltage N301 pin3 Flip closed 2 75V Flip open 0V OK Change defect part and retest Yes Check line between N301 pin3 and V320 pin5 Is it OK No Change TB9 module Yes Retest No Check voltage N301 pin1 is it 2 75V Yes Check R202 and KEYB1 line Are they OK Check R309 C309 C205 and VFLASH1 line OK Change defect part Change N301 Cha...

Page 77: ...s Check VBAT line C201 C202 If not OK change defect part and retest Check voltage N301 pin3 Flip closed 2 75V Flip open 0V OK Change defect part and retest Yes Check line between N301 pin3 and UEM KEYB1 line Is it OK No Change TB9 module Yes Retest No Check voltage N301 pin1 is it 2 75V Yes Check R202 and UEM KEYB1 line Are they OK Check R309 C309 C205 and VFLASH1 line OK Change defect part Change...

Page 78: ...NSB 9 Troubleshooting Instructions CCS Technical Documentation Page 78 Nokia Corporation Issue 1 04 03 FM Radio doesn t work See page 35 FM Radio troubleshooting ...

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