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PAMS Technical Documentation NPM-5 Troubleshooting 7DEOH RI &RQWHQWV Troubleshooting...................................................................................................1 Abbreviations used......................................................................................................... 7 CMT Troubleshooting..........................................................................................8 Baseband Testpoints ....................................................................
NPM-5 Troubleshooting PAMS Technical Documentation General instructions for Synthesizer troubleshooting ................................................46 26 MHz reference oscillator ( VCTCXO ) ................................................................46 Measuring on the VCTCXO component................................................................. 46 Measuring on the VCTCXO buffer......................................................................... 47 VCO ....................................
PAMS Technical Documentation NPM-5 Troubleshooting Fig 9 Jammed phone. ...........................................................................................................16 Fig 10 MCU Self Test window............................................................................................17 Fig 11 Phone not registering to network..............................................................................19 Fig 12 SIM error 1 ....................................................................
NPM-5 Troubleshooting Fig 57 Fig 58 Fig 59 Fig 60 Fig 61 Fig 62 Fig 63 3DJH PAMS Technical Documentation FM recording not possible........................................................................................84 Stereo audio malfunction..........................................................................................85 Stereo headset microphone malfunction ..................................................................86 Mono headset malfunction .....................................
PAMS Technical Documentation NPM-5 Troubleshooting $EEUHYLDWLRQV XVHG BB Baseband CMT Cellular Mobile Telephone DC Direct Current ESD Electro Static Dicharge f: Frequency of signal (measured with Spectrum Analyzer) LF: Low frequency (measured with oscilloscope) LO Local Oscillator P: Power of signal in decibels (dB) (measured with Spectrum Analyzer) PA Power Amplifier PCB Printed Circuit Board PLL Phase Locked Loop RF Radio Frequency RX Receiver T: Time between pulses TX Trans
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NPM-5 CMT Troubleshooting PAMS Technical Documentation 7URXEOHVKRRWLQJ &KDUWV IRU &07 3KRQH LV 'HDG 3KRQH LV GHDG PHDQV WKDW WKH SKRQH GRHV QRW WDNH FXUUHQW ZKHQ WKH SRZHU VZLWFK LV SUHVVHG RU ZKHQ WKH ZDWFKGRJ GLVDEOH SLQ :'',6; LV JURXQGHG 1RPLQDO VXSSO\ YROWDJH WR WKH SKRQH LV 9 9EDW YROWDJH ,I WKH EDWWHU\ YROWDJH LV EHORZ 9 WKH &&217 SUH YHQWV WKH SKRQH IURP SRZHULQJ XS )LJXUH 'HDG SKRQH The phone is dead The voltage at C404, C202, C226, C227, C228 is = 3,6V No Failiure in
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NPM-5 CMT Troubleshooting PAMS Technical Documentation )ODVK SURJUDPPLQJ GLDJUDP )LJXUH )ODVK SURJUDPPLQJ WURXEOHVKRRWLQJ Flash programming doesn’t work If fault information from Prommer is: a) MCU doesn’t boot b) Serial dataline failure c) Serial clock line failure No See section: (2) Yes Connect R224 (towards N201) (WDDISX) to GND. Yes C211 towards N201 (VBB) = 2.8 V C518 towards C506 (VXO) = 2.8 V when PWR switch is pressed. No See section: "Phone is dead" Yes R308 (PURX) = "1" (2.
NPM-5 CMT Troubleshooting PAMS Technical Documentation )ODVK SURJUDPPLQJ GLDJUDP )LJXUH )ODVK SURJUDPPLQJ WURXEOHVKRRWLQJ Flash programming doesn’t work External RAM error Yes Check for activity on control lines for SRAM : J323 (RAMSelX) Yes Defective SRAM (D302) No Defective MAD2 (D300) or short circuit under the SRAM No Algorithm file or alias not found.
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NPM-5 CMT Troubleshooting PAMS Technical Documentation 3KRQH GRHV QRW UHJLVWHU WR QHWZRUN )LJXUH 3KRQH QRW UHJLVWHULQJ WR QHWZRUN Phone doesn’t register to a network or the phone is unable to make a call C207 (Vcobba) > 2,7V No Check CCONT (N201) Yes Vref at C201 =1,5V Check C210, R509 and C536.
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NPM-5 CMT Troubleshooting PAMS Technical Documentation 6,0 FDUG UHMHFWHG HUURU )LJXUH 6,0 FDUG HUURU "SIM card rejected" Vsim according to spec.: 2,8V min. (3V SIM card) 4,5V min.
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NPM-5 CMT Troubleshooting PAMS Technical Documentation )LJXUH ([WHUQDO HDUSLHFH Headset earpiece does not work and there are no mechanical problems Check R108, C103, C408 5HSODFH &2%%$ 1 )LJXUH ([WHUQDO PLFURSKRQH Headset microphone does not work and there are no mechanical or electrical problems 12 R105 (XMICIN line towards COBBA (N100) = 2.
NPM-5 CMT Troubleshooting PAMS Technical Documentation &KDUJLQJ (UURU )LJXUH 1R GHWHFWLRQ RI FKDUJHU Nothing happens when a charger is connected to the phone Yes The voltage at R210 towards R209 > 0,4V No Check F200, L202, R209, R210 Yes Replace CCONT (N201) )LJXUH 1RW &KDUJLQJµ PHVVDJH "Not charging" message appears in the display Yes The voltage at R220 towards C236 (BSI, N201) = 0,8V when a charger is connected.
PAMS Technical Documentation NPM-5 RF Troubleshooting 5) 7URXEOHVKRRWLQJ 7ZR W\SHV RI PHDVXUHPHQWV DUH XVHG LQ WKH IROORZLQJ ,W ZLOO EH VSHFLILHG LI WKH PHDVXUH PHQW W\SH LV 5) RU /) • RF measurements should be done with a Spectrum Analyzer and a high-frequency 500 ohm passive probe, for example HP54006A. (Note that when measuring with the 500 ohm probe the signal will be around 20 dB attenuated.
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NPM-5 RF Troubleshooting PAMS Technical Documentation 5) &RPSRQHQW /RFDWLRQV )LJXUH 5) &RPSRQHQW /RFDWLRQV Vc1 (control pin for RXTX switch) Vc2 (control pin for RXTX Switch) GSM1800 RF_out - C519 GSM_Rx (GSM900) - C556 LNA_P (GSM1800) C568 GSM 1800 RF_in L505 1st Dual SAW (GSM1800 output) 1st Dual SAW (GSM 900 output) PCN_Rx (GSM1800) 1st Dual SAW (GSM900 Input) 1st Dual SAW (GSM1800 input) ANT (anntenna output of RXTX Switch) ,VVXH 1RNLD &RUSRUDWLRQ 3DJH
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NPM-5 RF Troubleshooting PAMS Technical Documentation 7URXEOHVKRRWLQJ FKDUW IRU *60 UHFHLYHU )LJXUH (*60 )DXW WUHH EGSM Fault tree Apply -80dBm 942.667MHz signal from generator to antenna connector Yes Oscilloscope at RXI Signal 950mVpp DC offset 1,1V Frequency 67,7kHz No Change generator level to -55dBm Yes Spectrumanalyzer Spectrumanalyzer GSM LNA out No 1st Dual SAW In1 -73dBm -85dBm GSM_RX_SW -84dBm No Yes Yes Check RX/TX Switch Z502 Yes Oscilloscope LNA_G 2.4-2.8V LNAB_D 2.
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NPM-5 RF Troubleshooting PAMS Technical Documentation 7URXEOHVKRRWLQJ FKDUW IRU *60 UHFHLYHU )LJXUH 3&1 IDXOW WUHH PCN Fault tree Apply -80dBm 1842.867MHz signal from generator to antenna connector Yes Oscilloscope at RXI Signal 1.5Vpp DC offset 1,1V Frequency 67,7kHz No Change generator level to -55dBm Yes Spectrumanalyzer Spectrumanalyzer 1st Dual RX SAW V500, RFout No In2 -72dBm -92dBm PCN_RX -91.5dBm No Yes Oscilloscope LNAB_G 2.4-2.
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NPM-5 RF Troubleshooting PAMS Technical Documentation 3&1 7UDQVPLWWHU *HQHUDO LQVWUXFWLRQV IRU 3&1 7; WURXEOHVKRRWLQJ $SSO\ D 5) FDEOH WR WKH 5) FRQQHFWRU WR DOORZ WKH WUDQVPLWWHG VLJQDO DFW DV QRUPDO 5) FDEOH VKRXOG EH FRQQHFWHG WR PHDVXUHPHQW HTXLSPHQW RU WR DW OHDVW D G% DWWHQXDWRU RWKHUZLVH WKH 3$ PD\ EH GDPDJHG )LJXUH 3&1 7; WURXEOHVKRRWLQJ Measure TX power on "ANT" Power > 30.5 dBm in 50 ohm. No Measure TX power on GSM_Tx. Power ~ 8 dBm in 500 ohm No Measure TX power on "Pout".
NPM-5 RF Troubleshooting PAMS Technical Documentation 7URXEOHVKRRWLQJ FKDUW IRU 3&1 WUDQVPLWWHU )LJXUH 3&1 7; WURXEOHVKRRWLQJ Measure TX power on "ANT" No Power > 27.5 dBm in 50 ohm Measure TX power on DCS_Tx. Power ~7 dBm in 500 ohm No Measure TX power on "Pout". Power ~7 dBm in 500 ohm No Measure TX power on "Pin". Power ~-17 dBm in 500 ohm Yes Yes Yes Yes Check POGO pins, C593, L510 With Osc on RXTX switch check: Vc1 = 2.
PAMS Technical Documentation NPM-5 RF Troubleshooting 6\QWKHVL]HU 7KHUH LV RQO\ RQH 3// V\QWKHVL]HU JHQHUDWLQJ IUHTXHQFLHV IRU ERWK 5[ DQG 7[ LQ ERWK EDQGV 3&1 DQG *60 9&2 IUHTXHQF\ LV GLYLGHG E\ RU E\ LQ +$*$5 GHSHQGLQJ RQ ZKLFK EDQG LV DFWLYH )LJXUH 9&7;2 PHDVXUHPHQW SRLQWV VCTCXO: Out (26 MHz) - G502 VCTCXO: Vtcxo (2.
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NPM-5 RF Troubleshooting PAMS Technical Documentation 7URXEOHVKRRWLQJ FKDUW IRU 3// 6\QWKHVL]HU )LJXUH 3// V\QWKHVL]HU WURXEOHVKRRWLQJ From WinTesla chose: Product > Band > EGSM Testing > RF Controls > Rx continuous > Ch 60 Spectrum Analyzer VCO output ( G500 out) 3788 MHz No Oscilloscope Yes VCTCXO Power Supply (G502 Vcc) 2,7 V No Yes PLL block functional Oscilloscope Yes VCTCXO output (G502 out) 26 MHz, approx. 1.
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NPM-5 RF Troubleshooting PAMS Technical Documentation
NPM-5 RF Troubleshooting 3DJH PAMS Technical Documentation
NPM-5 RF Troubleshooting PAMS Technical Documentation
NPM-5 RF Troubleshooting PAMS Technical Documentation
NPM-5 RF Troubleshooting PAMS Technical Documentation
NPM-5 RF Troubleshooting 3DJH PAMS Technical Documentation
NPM-5 RF Troubleshooting PAMS Technical Documentation
NPM-5 RF Troubleshooting 3DJH PAMS Technical Documentation
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NPM-5 UI Module Troubleshooting PAMS Technical Documentation voltages,” on page 73) • Check pull-down resistors R701, R703, R704, R705, and network resistor R702. • Check presence of clock frequency 32.768kHz @ U301-Pin9 using oscilloscope (Figure 47, “MCU Clock Waveform – 32.768kHz,” on page 74). • Check PURX @U301-Pin58 = 2.
PAMS Technical Documentation NPM-5 UI Module Troubleshooting LQ JRRG FRQGLWLRQ IRU WKH PXVLF SOD\HU WR IXQFWLRQ SURSHUO\ • U301 MCU • U101 DSP • U201 NAND Memory • U601 Audio Codec • U602 Audio Routing Select Diagnostic Tests: • Check the Line-In jack has proper contact with the UI module.
NPM-5 UI Module Troubleshooting • PAMS Technical Documentation U801 FMR ,W LV LPSRUWDQW WKDW D VHUYLFH SHUVRQQHO KDV D OLVW RI YDOLG ¦OLYH§ )0 FKDQQHO IRU OLVWHQLQJ YHULILFDWLRQ 7KHVH GLDJQRVWLF VWHSV GR QRW UHTXLUH DQ\ VLJQDO JHQHUDWRU Diagnostic Tests: • Check the stereo headset has proper contact with the UI module since the stereo headset is used as antenna to FM signal • Check Music Player function. This will ensure the MCU, DSP, NAND, and Audio Codec are functioning.
PAMS Technical Documentation • U201 NAND Memory • U601 Audio Codec • U602 Audio Routing Select • U801 FMR NPM-5 UI Module Troubleshooting ,W LV LPSRUWDQW WKDW D VHUYLFH SHUVRQQHO KDV D OLVW RI YDOLG ¦OLYH§ )0 FKDQQHO IRU OLVWHQLQJ YHULILFDWLRQ 7KHVH GLDJQRVWLF VWHSV GR QRW UHTXLUH DQ\ VLJQDO JHQHUDWRU Diagnostic Tests: • Perform test on page 68 – Line-In Recording Function to verify the recording path is good.
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NPM-5 UI Module Troubleshooting PAMS Technical Documentation 'LVSOD\ PRGXOH PDOIXQFWLRQ Figure 52: Display Module - No Display, Display Module Malfunction Replace a good display module Is the display module OK? NO Check the soldering and connection of the 36-pin B2B connector to UI board YES Change the display module with a new one ,VVXH 1RNLD &RUSRUDWLRQ 3DJH
NPM-5 UI Module Troubleshooting PAMS Technical Documentation 1R EDFNOLJKW LQ /&' RU NH\ERDUG )LJXUH LCD/Keyboard LED - No Light LCD/Keyboard LED Malfunction Ensure CMT is functioning well Measure VBAT with DVM Is the voltage of VBAT OK? NO Check the soldering and connection of the 36-pin B2B connector to UI board YES Replace with new LED 3DJH 1RNLD &RUSRUDWLRQ ,VVXH
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NPM-5 UI Module Troubleshooting PAMS Technical Documentation 1R DXGLR LQ 0XVLF 3OD\HU )LJXUH 0XVLF SOD\HU QR DXGLR Music Player No Audio Ensure the stereo headset has proper contact with UI board Check if ST_DET voltage correct NO Check resistor R607, R608 YES Check R304, R305 and B2B connection Check if VBAT, VBB voltages are correct NO Check CMT YES Check if UC_VCC(U501), DVCC(U502), CVCC(U505), AVCC(U503) voltages are correct NO Change Regulator YES Check if 32.768kHz (Y301), 11.
NPM-5 UI Module Troubleshooting PAMS Technical Documentation 1R )0 DXGLR RU PDQXDO )0 WXQLQJ PDOIXQFWLRQ )LJXUH 1R )0 DXGLR RU PDQXDO )0 WXQLQJ PDOIXQFWLRQ FMR Manual Tuning Malfunction FMR Malfunction Is MP3 functioning OK? Go to MP3 Troubleshooting section.
NPM-5 UI Module Troubleshooting PAMS Technical Documentation )0 UHFRUGLQJ QRW SRVVLEOH )LJXUH )0 UHFRUGLQJ QRW SRVVLEOH FM/Line-In Recording Malfunction Is MP3 functioning OK? NO Go to MP3 Troubleshooting section. NO Go to FMR Troubleshooting section.
NPM-5 UI Module Troubleshooting PAMS Technical Documentation 6WHUHR DXGLR PDOIXQFWLRQ )LJXUH 6WHUHR DXGLR PDOIXQFWLRQ Phone Audio Malfunction (Stereo Headset) Is MP3 functioning OK? Go to MP3 Troubleshooting section. NO Make a phone call. Ensure the line is connected.
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NPM-5 UI Module Troubleshooting PAMS Technical Documentation 3KRQH VSHDNHU PDOIXQFWLRQ )LJXUH 3KRQH VSHDNHU PDOIXQFWLRQ Internal speaker malfunction Replace a good internal speaker and test it Is the new speaker working? YES Replace the speaker NO Check B2B connector.
NPM-5 UI Module Troubleshooting PAMS Technical Documentation 3KRQH PLFURSKRQH PDOIXQFWLRQ )LJXUH 3KRQH PLFURSKRQH PDOIXQFWLRQ Internal mic malfunction Replace a good system connector and test it Is the new mic working? YES Replace the system connector NO Check B2B connector.
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