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NPM-6 Series Transceiver

Issue 1 01/03 ãNokia Corporation

Troubleshooting Instructions

Summary of content (52 pages)

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NPM-6 Series Transceiver Troubleshooting Instructions Issue 1 01/03 ãNokia Corporation
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Troubleshooting Instructions CCS Technical Documentation [This page left intentionally blank] Page 2 ãNokia Corporation.
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CCS Technical Documentation Troubleshooting Instructions Table of Contents Page No RF Troubleshooting .......................................................................................................4 Introduction to RF troubleshooting .............................................................................4 RF Key component placement .....................................................................................5 RF Measurement points ...................................................
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Troubleshooting Instructions CCS Technical Documentation RF Troubleshooting Introduction to RF troubleshooting Measurements should be done using Spectrum analyzer with high-frequency highimpedance passive probe (LO-/reference frequencies and RF power levels) and Oscilloscope with a 10:1 probe (DC-voltages and low frequency signals) The RF-section is built around one RF-ASIC (HELGA N500). For easier troubleshooting, this RF troubleshooting document is divided in to sections.
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CCS Technical Documentation Troubleshooting Instructions RF Key component placement Figure 1: Component placement 1 Issue 1 01/03 ãNokia Corporation.
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Troubleshooting Instructions CCS Technical Documentation RF Measurement points Figure 2: Component placement 2 Page 6 ãNokia Corporation.
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CCS Technical Documentation Troubleshooting Instructions EGSM900 & GSM1800 Transmitter General instructions for Tx troubleshooting Kindly refer to the Service Software Section, Service Concept dagram (p.40) Connect test jig to computer with DAU-9S cable or to FPS-8 Flash Prommer with XCS-4 modular cable. Make sure that you have PKD-1 dongle connected to computers parallel port. Connect DC power supply to module test jig with FLC-2 cable.
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Troubleshooting Instructions CCS Technical Documentation - 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 Page 8 ãNokia Corporation.
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CCS Technical Documentation Troubleshooting Instructions Transmitter troubleshooting diagram Figure 3: Transmitter troubleshooting TX troubleshooting TX OK Yes Check output signal level: (EGSM900 Yes +32...+33dBm @897.4 MHz (GSM900) +29...+30dBm @1747.
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Troubleshooting Instructions CCS Technical Documentation Figure 4: HELGA IC troubleshooting HELGA troubleshooting Check with oscilloscope: -TXI/TXQ signals -VR1, VR2, VR4, VR5, VR6 = 2.8V -VrefRF01 = 1.35 V -HELGA serial interface -TXP & TXC signals OK ? Check with RFRF probe: Check with probe: -4GVCO outout signal -4G VCO signal - 3589.6 MHz (GSM900) -3589.6MHz (EGSM900) -3495.6MHz MHz (GSM1800) -3495.
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CCS Technical Documentation Troubleshooting Instructions Figure 5: PA and Antenna Switch troubleshooting PA & ant switch troubleshooting Yes *(When 1kOhm passive probe is used, correct the measurement by +26dB Check with RF probe signal level on PA input >=0dBm (* OK ? Yes Yes Check with oscilloscope: -VANT_1 (GSM900) -VANT_1 (EGSM900) -VANT_2 (GSM1800) -VANT_2 (GSM1800) -VANT_3 (GSM1900) -VANT_3 (GSM1900) Replace ant. switch OK ? No Check with oscilloscope: -VBATT ~4V - VTXB = 2.
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Troubleshooting Instructions CCS Technical Documentation Pictures of transmitter signals Figure 6: Transmitter signals TXI VPC 200mV/div 1 100us/div 200mV/div VPCTRL _900 power level high at R703/C703 VPCTRL_1800/1900 power level high at R704/C704_ TX I/Q at R516/517 power level high Random data 1 500mV/div VTXB_900 at C713 VTXB_1800_1900 at C714 100us/div VANT_1,VANT_2,VANT_3 500mV/div 500mV/div 100us/div Page 12 500mV/div 100us/div VANT_1 / EGSM900 TX at C804 VANT_2 / GSM1800 TX at C835
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CCS Technical Documentation Troubleshooting Instructions Figure 7: TX OUT signal G S MP O W REF 4 1 . 0 1 0 d B/ d Bm ATT 4 0 T u e Se p 2 5 1 3 : 4 8 : 5 9 2 0 0 1 dB A_ wr i t eB_ b l a n k REF OF S 11. 0 dB RBW 10 0 VBW 10 0 S WP 2. 0 k Hz k Hz s CENT ER 8 9 7. 4 0 0 MH z SPAN 2 . 0 0 0 MH z Tx out signal, 900 band, burst mode, channel 37 Issue 1 01/03 ãNokia Corporation.
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Troubleshooting Instructions CCS Technical Documentation EGSM900, GSM1800 and GSM1900 Receiver General instructions for Rx troubleshooting Connect test jig to computer with DAU-9S cable or to FPS-8 Flash Prommer with XCS-4 modular cable. Make sure that you have PKD-1 dongle connected to computers parallel port. Connect DC power supply to module test jig with FLC-2 cable. Set the DC supply voltage to 6V (test jig has internal voltage regulator of output voltage 4V).
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CCS Technical Documentation Troubleshooting Instructions - Set Rx/Tx channel to 37 on EGSM900 band, 700 on GSM1800 band or 661 on GSM1900 (Defaults) Apply 942.46771 MHz (channel 37 + 67.710 kHz offset), 1842.86771 MHz (channel 700 + 67.710 kHz offset) or 1960.06771 MHz (channel 661 + 67.71 kHz) –90 dBm signal to the RF-connector (remember to compensate for cable attenuation).
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Troubleshooting Instructions CCS Technical Documentation DC level of signal part is 1.35V. DC level can variate about +/-100mV between I and Q signals and between different bands as well. Figure 9: GSM1900 RX I or Q signal (trace2), burst mode. For GSM1900 receiver burst mode I or Q signal at ch 661 with input signal 1960.067MHz, level –90 dBm at RF-connector.
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CCS Technical Documentation Troubleshooting Instructions Figure 10: RX I&Q, phase difference 90 deg between signals. Figure 10, “RX I&Q, phase difference 90 deg between signals.,” on page 17: Detailed view of EGSM900 continuous mode RX I and Q signals measured from testpoints RXI and RXQ simultaneously. Used channel 37, input signal 942.467 MHz, level –90 dBm at antenna port, AGC setting 12. Phase difference should be 90 degrees between RX I and Q signals at all bands. Issue 1 01/03 ãNokia Corporation.
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Troubleshooting Instructions CCS Technical Documentation Troubleshooting diagram for EGSM900 receiver Phone in “Continuous” mode, AGC setting “12” Figure 11: EGSM900 receiver troubleshooting Apply –90dBm 942.46771MHz signal from generator to antenna connector Yes Oscilloscope at RX_I Signal 700mVpp DC offset 1.35V*** Frequency 67.
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CCS Technical Documentation Troubleshooting Instructions Troubleshooting diagram for GSM1800 receiver Phone in “Continuous” mode, AGC setting “12 Figure 12: GSM1800 receiver troubleshooting Apply –90dBm 1842.86771MHz signal from generator to antenna connector Yes Oscilloscope at RX_I Signal 140mVpp DC offset 1.35V *** Frequency 67.
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Troubleshooting Instructions CCS Technical Documentation Troubleshooting diagram for GSM1900 receiver Phone in “Continuous” mode, AGC setting “12 Figure 13: GSM1900 receiver troubleshooting Apply –90dBm 1842.86771MHz signal from generator to antenna connector Yes No Oscilloscope at RX_I /RXQ Signal 160mVpp DC offset 1.35V *** Frequency 67.
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CCS Technical Documentation Troubleshooting Instructions Synthesizer General instructions for synthesizer troubleshooting Connect test jig to computer with DAU9S cable or to FPS-8 Flash Prommer with XCS-4 modular cable. Make sure that you have PKD-1 dongle connected to computers parallel port. Connect DC power supply or FPS-8 to module test jig with PCS-1 cable. Set the DC supply voltage to 3.9V and set the jumper connector on test jig to "bypass" position.
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Troubleshooting Instructions CCS Technical Documentation Synthesizer troubleshooting diagram Figure 14: Synthesizer troubleshooting *(When 2.5kOhm passive probe is used, correct the measurement by +34 dB Yes Set with RF controls: Active Unti = Rx Operation mode = Continuous Yes Synthesizer OK Check with RF probe: Check with probe: -4G VCO outRF signal -4G VCO out signal -3589.6 MHz (EGSM900) - 3589.6 MHz (GSM900) -3495.6MHz MHz (GSM1800) (GSM1800) -3495.
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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 Issue 1 01/03 ãNokia Corporation.
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Troubleshooting Instructions CCS Technical Documentation Figure 18: 1900 RX, channel 810, continuous mode Figure 19: VCO output, 1800 band, RX on, continuous output REF 4. 0 dBm 10dB/ W ed Aug 21 21:23:21 2002 ATT 10 dB A_vi ewB_blank MARKER 3. 685604 GHz - 3. 97 dBm SPAN 1. 000 MHz REF OFS 34.0 dB RBW 10 kHz VBW 10 kHz SWP 50 ms Page 24 CENTER 3. 685600 GHz ãNokia Corporation. SPAN 1.
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CCS Technical Documentation Troubleshooting Instructions Baseband Troubleshooting The following diagrams describe baseband troubleshooting. Phone is dead Phone current is zero? Yes Check X100 No Phone current is <50mA Yes Is phone flash proramming OK Yes Phone is jammed No No Flash faults Is phone in LOCAL mode No Check BSI line, X100, C240,R203, C100,R206 OK? Yes Change UEM Yes No Repair Ok retest Issue 1 01/03 ãNokia Corporation.
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Troubleshooting Instructions CCS Technical Documentation Phone is jammed Measure VIO, VCORE, VFLASH1, VANA, VR3 voltages. Are they OK ? No Measure 32kHz SleepClk from testpoint J404. No Is it OK ? No Yes Yes No Yes Measure PURX signal from testpoint J402. Is it HIGH (1.8V) ? Measure 32kHz SleepClkfrom B200. Is it OK ? Measure 26MHz RFCLK from C660. Is it OK ? Yes No Check X260-265, C260-265, BSI/BTEMP lines and VBATT lines Check BSI/BTEMP lines.
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CCS Technical Documentation Troubleshooting Instructions Phone is jammed 2 Phone Shutdown after 30s Yes Measure watchdog signal CBUSDA from J414. Is it OK ? No Change UPP Yes No Retest Measure DBUSClk 1MHz signal from testpoint J413. Is it OK ? No Yes Read phone info. Is it OK ? Yes No Measure FBUSRx signal during phone info read from testpoint J412. Is it OK ? No Change UEM Yes Measure FBUSTx signal during phone info read from testpoint J411.
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Troubleshooting Instructions CCS Technical Documentation Flash faults Phone doesn't set FlashBus TxD line HIGH after the startup? Yes No Measure BSI pulse during Flash programming. Is it OK? No Check BSI line, X100, C240, R203, C100, R206 No Check FBUSTx line. If OK Change UEM Yes Measure FBusTx line during Flash programming (TP 411) Is it HIGH (1.8V)? Yes Phone doesn't set FlashBus TxD line LOW after the line has been set HIGH Yes Change UPP No Flash faults 2 Page 28 ãNokia Corporation.
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CCS Technical Documentation Troubleshooting Instructions Flash faults 2 Wrong manufacturer ID or Device ID Yes Change Flash No Phone is totally dead Yes Phone is dead No Phone doesn't start up or phone is jammed Phone is jammed Yes No Retest Issue 1 01/03 ãNokia Corporation.
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Troubleshooting Instructions CCS Technical Documentation SIM card faults Insert SIM card faults No Yes Set phone to LOCAL mode. Is it OK ? No Check BSI line, X100, C240, R203, R206. If OK change UEM No Check VSIM line,X386, C203,C370, L386. If OK change R388. If still wrong VSIM change UEM No Check SIM lines. If OK change R388. If still fail change UEM. Yes Check X386 Measure VSIM voltage from X386. Is it 3V (1.8V) Yes Check SIM power up sequency.
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CCS Technical Documentation Troubleshooting Instructions Display faults Try to change UI -module. Is it working now ? Set phone to LOCAL mode. Set VBATT to 4.2V. Start Display test with Phoenix. Set display ON No Are display light (LED) turned on ? Yes No Check CALLED1 (N300/8 and DLIGHT (V312/IN).Are they HIGH ? Yes Board to boad connector fault in displaymodule or faulty module. Retest No Check lines of CALLED1 and DLIGHT.
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Troubleshooting Instructions CCS Technical Documentation Display faults Try to change UI -module. Is it working now ? Set phone to LOCAL mode. Set VBATT to 4.2V. Start Display test with Phoenix. Set display ON No Are display light (LED) turned on ? Yes No Check CALLED1 (N300/8 and DLIGHT (V312/IN).Are they HIGH ? Yes Board to boad connector fault in displaymodule or faulty module. Retest No Check lines of CALLED1 and DLIGHT.
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CCS Technical Documentation Troubleshooting Instructions Display faults 2 Does the display start ? No Yes Try to change UI -module. Is it working now ? Yes Board to boad connector fault in display module or faulty module. Retest No Check lines of VFLASH1 and VIO. If lines are OK change UEM No Check lines of display control. If OK change UPP No Measure VDDI/J301 (2.78V) and VDD/J300 (1.8V).Are they OK ? No Check signals RESX/J306, SDA/J305,SCLK/J307, CSX/J304.
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Troubleshooting Instructions CCS Technical Documentation Audio faults Is earpiece working ? Yes No Try to change UImodule. Is it working now ? Check earpiece contact springs from old UI-module and change earpiece and foam to old UI-module. Retest. Yes No Change old UI -module back.Set phone to LOCAL mode. Using Phoenix Audiotest set EXT IN, HP OUT, LOOP ON Measure DCoffset voltage from J310/ J311 and GND pads. Is it ~1.38V ? No Check L150, C155, R151 and line.
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CCS Technical Documentation Troubleshooting Instructions Audio faults 2 Is microphone working ? No Try to change new C-cover assembly. Is it working now ? Yes No Check mic contact springs from old C-Cover assembly. If not OK change PopPort assembly to old C-cover. Retest. Yes Restore old C-cover. Set phone to LOCAL mode. Using Phoenix Audiotest set HP IN, EXT OUT, LOOP ON Measure MICB1voltage from J110 pad. Is it ~1.38V ? No Check L101,L108, C151, C152, C153, R156, R157, R176.
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Troubleshooting Instructions CCS Technical Documentation Earpiece 2 Connect EXT audio signal 1kHz(sine, 200mVpp) between XMICP and XMICN pads (X101, 11/12) Measure sine signal from earpiece pads (J310,J311). Is It ~880mVpp ? Yes No Measure sine signal from UEM (R151,R152). Is it ~130mVpp ? Yes Change UEM No Check R151,R152, C155, L150 and lines. Change UPP Retest Page 36 ãNokia Corporation.
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CCS Technical Documentation Troubleshooting Instructions Audio faults 3 IHF speaker working ? No Yes Yes Yes END Try to change new C-cover assembly IHF speaker or contact springs fault. Restest Restore old C-cover Set phone to local mode with Phoenix. Set buzzer ON, vol "9" and freq. to 1kHz. No Check C173, C174, C175, L151, L152, C170, C171, C172 and IHF PA output lines. Retest. Measure DClevel between IHF pads J156/J157 to GND. Is it ~1.8V ? Yes Measure AClevel between IHF pads (J156,J157).
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Troubleshooting Instructions CCS Technical Documentation Keyboard faults Is the powerkey working? Yes No Measure voltage from S302. Is it HIGH? Yes Check R306, C310, S302 and POWERONX line. If OK change UEM Yes Measure voltage from S302 when powerkey is pressed. Is it HIGH ? Phone is jammed Yes Check S302. Is it OK ? No Change S302 Yes Keyboard faults 2 Page 38 Phone is dead ãNokia Corporation.
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CCS Technical Documentation Keyboard faults 2 Troubleshooting Instructions Try to change UI -module. Is it working now ? Yes UI connector pad fault in UI-board or faulty UI-module. Retest No Is UI-module keymatrix working ? No No Check ROW0-4 lines, X301. If OK change Z300. If still fails change UPP. Measure SLEEPX signal from J403 when key No pressed. Is it ~1.8V ? Check ROW0-4 lines, X301. If OK change Z300. If still fails change UPP. Measure ROW0-4 lines from X301.
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Troubleshooting Instructions CCS Technical Documentation Keyboard faults 3 Measure ROW0 line from S300. Is it ~1.8v ? Is volume up key working ? Yes No Check S300, S301 and lines. If OK change Z300. If still fail change UPP No Yes Measure COL1 from S300 when key is pressed. Is there 50us pulse ? No Check S300 and COL1 lines. If OK change Z300. If still fail change UPP Yes Change UPP Is volume down key working ? Yes No Measure ROW0 line from S301. Is it ~1.8v ? Yes Check S300, S301 and lines.
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CCS Technical Documentation Keyboard faults 4 Try to change UI -module. Is it working now ? Set phone to LOCAL mode. Set VBATT to 4.2V. Start Display test with Phoenix. Set "Keyboard lights" ON Are keyboard light (LED) turned on ? Yes Troubleshooting Instructions No Yes UI-board pads fault or faulty UI-board. Retest No Check CALLED1 (N300/8 and KLIGHT (V314/IN).Are they HIGH ? No Check lines of CALLED1 and KLIGHT.
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Troubleshooting Instructions CCS Technical Documentation Accesory if faults Non-ACI accessory detected and No working? Insert mono headset (HDB-4) Check ACI line trans.HIGH to LOW (<0.6V) ? No Check PopPort connecor pin 3(ACI) and line to systemboard, L106,R103, R109, C103. If OK change UEM. Retest. No Check PopPort connecor pin 3(ACI) and line to systemboard, L106,R103, R109, C103. If OK change UEM. Retest Yes Remove headset Check ACI line trans. LOW to HIGH.
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CCS Technical Documentation Troubleshooting Instructions Accesory if faults ACI accessory detected and working? No Insert stereo headset (HDS-3) Wait 5s Measure Vout levelPopPort connector pin 4. Is it ~2.8V No Check PopPort connecor pin 4(Vout)) and line to systemboard, L107, C102, C112, C101, R111. If ok check GENIO(0) signal on N100/VEN. If it is HIGH, change N100 No Check PopPort connecor pin 3 (ACI) and line to systemboard, L106,R103, R109, C103. If OK change UEM. Retest.
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Troubleshooting Instructions CCS Technical Documentation Flashlight faults Set phone to LOCAL mode. Set VBATT to 4.2V. Start Display test with Phoenix. Set "Flashlight" ON Check CALLED1 (N300/8 and CALLED2 (V320/IN).Are they HIGH ? Are flashlight (LED) turned on ? Yes Yes Measure voltage over C304. Is it typ. 8.6V ? No Check lines of CALLED1 and CALLED2. If lines are OK change UEM No Check C302,C303,L300,V30 0, R301, R302, R303, R325, C304.
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CCS Technical Documentation Troubleshooting Instructions 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. Issue 1 01/03 ãNokia Corporation.
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Troubleshooting Instructions CCS Technical Documentation FM Radio troubleshooting FM Radio component layout Figure 20: Component placement Page 46 ãNokia Corporation.
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CCS Technical Documentation Troubleshooting Instructions Figure 21: Trace layout. Figure 22: 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 section, near audio amplifier N150. Issue 1 01/03 ãNokia Corporation.
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Troubleshooting Instructions CCS Technical Documentation FM Radio troubleshooting diagram 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.
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CCS Technical Documentation Troubleshooting Instructions Figure 23: FM radio troubleshooting diagram Set phone into local mode. Start FM radio. NO Does the radio start ? Check C374, C375, R375, R358 and measure R372 32kHz clock signal from J359, retest starting. Start OK ? Measure voltages from pins 7 and 34, is it –2.7 V ? Retest starting. Start OK now ? NO NO YES YES YES NO YES Check R164, R165, R166, R167, L103,L104 Measure signal from J103 and J104. Is it 0.015–0.
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Troubleshooting Instructions CCS Technical Documentation Diagrams of FM radio signals Figure 24: 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 50 ãNokia Corporation.
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CCS Technical Documentation Troubleshooting Instructions Figure 25: FM radio clock from test point J359, 32 kHz frequency clock signal, when radio is on. 15:51:49 03 JUL 2002 REF -20.0 dBm PEAK LOG MKR 97.9280 MHz -71.03 dBm #AT 0 dB SWEEP CONT SGL FREE RUN 10 dB/ VIDEO LINE WA SB EXTERNAL CORR SC FS SYNC CRD CENTER 98.0000 MHz #RES BW 10 kHz SPAN 300.0 kHz #SWP 1.
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Troubleshooting Instructions Page 52 CCS Technical Documentation ãNokia Corporation.