Text preview for : 09-npm5-trouble.pdf part of Nokia 5510 Service Manual, Part, Variant, Tools, Troubleshooting, Schematic, ecc. (MA4, MU4) - File 13
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7DEOH RI &RQWHQWV Troubleshooting...................................................................................................1 Abbreviations used......................................................................................................... 7 CMT Troubleshooting..........................................................................................8 Baseband Testpoints ...................................................................................................... 8 Power Schematic - Plots ............................................................................................10 CPU Schematic - Plots ...............................................................................................11 Troubleshooting Charts for CMT ................................................................................ 12 1. Phone is Dead ........................................................................................................12 2. Flash Programming Does Not Work ....................................................................13 2.1 Flash programming diagram (1)....................................................................... 14 2.2 Flash programming diagram (2)....................................................................... 15 3. Phone Stays On or is Jammed ...............................................................................16 3.1 Troubleshooting diagram,ad.3........................................................................... 16 4. Display Information : "Contact Service" ..............................................................17 5. No network found, No Call established .................................................................18 6. Phone does not register to network .......................................................................19 7. Sim Related Errors ...............................................................................................20 7.1 "Insert SIM card" error...................................................................................... 20 7.2 "SIM card rejected" error ................................................................................. 21 8. Audio Faults.......................................................................................................... 22 9. Charging Error .......................................................................................................24 RF Troubleshooting.......................................................................................... 25 RF Key Component Placement.................................................................................... 26 RF Component Locations ............................................................................................ 27 GSM900 Receiver Troubleshooting ............................................................................ 29 General instructions for GSM900 RX troubleshooting .............................................29 10.Troubleshooting chart for GSM900 receiver ........................................................31 GSM900 Signal path ..................................................................................................31 RX/TX Switch......................................................................................................... 31 Front-end ................................................................................................................. 32 Hagar ....................................................................................................................... 32 GSM1800 Receiver Troubleshooting .......................................................................... 33 General instructions for GSM1800 RX troubleshooting ...........................................33 11. Troubleshooting chart for GSM1800 receiver .....................................................35 PCN Signal path ........................................................................................................36 RX/TX Switch......................................................................................................... 36 Front-end ................................................................................................................. 36 Hagar ....................................................................................................................... 37 GSM900 Transmitter ................................................................................................... 37 General instructions for GSM900 TX troubleshooting .............................................37 Troubleshooting for GSM900 transmitter .................................................................39 Troubleshooting in output power ............................................................................ 39 Troubleshooting modulation ................................................................................... 41 PCN Transmitter .......................................................................................................... 43 12. General instructions for PCN TX troubleshooting ..............................................43 13. Troubleshooting chart for PCN transmitter .........................................................44 Synthesizer ................................................................................................................... 45
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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 ...........................................................................................................................47 14. Troubleshooting chart for PLL Synthesizer ........................................................48 14.1 Dead phone troubleshooting............................................................................ 49 Frequency lists ...........................................................................................................50 Hagar and serial interface ............................................................................................ 63 UI Module Troubleshooting ..............................................................................66 Troubleshooting method .............................................................................................. 66 Display Module .........................................................................................................67 LCD/Keyboard Backlight ..........................................................................................67 LCD Backlight ........................................................................................................ 67 Keyboard Backlight................................................................................................. 67 Keyboard/Hotkeys Functions ....................................................................................67 Music Player Function ...............................................................................................68 Line-In Recording Function ......................................................................................68 FMR Function ............................................................................................................69 FMR Recording Function ..........................................................................................70 Phone Audio Routing Function .................................................................................71 USB Connectivity Function .......................................................................................72 Appendix A: UI Module Voltages And Current Consumption ................................... 73 Appendix B: Signals on oscilloscope screen ............................................................... 74 Appendix C: Troubleshooting flow charts................................................................... 78 15. General UI troubleshooting .................................................................................78 16. Display module malfunction ................................................................................79 17. No backlight in LCD or keyboard .......................................................................80 18. Keyboard or hot keys do not respond ..................................................................81 19. No audio in Music Player ....................................................................................82 20. No FM audio or manual FM tuning malfunction ................................................83 21. FM recording not possible ...................................................................................84 22. Stereo audio malfunction .....................................................................................85 23. Stereo headset microphone malfunction ..............................................................86 24. Mono headset malfunction ..................................................................................86 25. Phone speaker malfunction ..................................................................................87 26. Phone microphone malfunction ...........................................................................88 27. USB detection malfunction ..................................................................................89 7DEOH RI )LJXUHV Fig 1 Topside Components ..................................................................................................8 Fig 2 Bottom Side Components...........................................................................................8 Fig 3 Power test points.........................................................................................................10 Fig 4 CPU test points ...........................................................................................................11 Fig 5 Flash programming.....................................................................................................11 Fig 6 .Dead phone ................................................................................................................12 Fig 7 Flash programming troubleshooting...........................................................................14 Fig 8 Flash programming troubleshooting 2........................................................................15
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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 ...............................................................................................................20 Fig 13 SIM card error 2 .......................................................................................................21 Fig 14 8.1 Internal earpiece .................................................................................................22 Fig 15 8.2 Internal microphone............................................................................................22 Fig 16 External earpiece ......................................................................................................23 Fig 17 8.4 External microphone ..........................................................................................23 Fig 18 No detection of charger ............................................................................................24 Fig 19 Not Charging" message ............................................................................................24 Fig 20 RF Component Locations 1......................................................................................27 Fig 21 RF Component Locations 2......................................................................................28 Fig 22 RF Controls window.................................................................................................30 Fig 23 EGSM Faut tree ........................................................................................................31 Fig 24 RF Controls PCN......................................................................................................33 Fig 25 PCN oscilloscope screen shot...................................................................................34 Fig 26 PCN fault tree ...........................................................................................................35 Fig 27 PCN oscilloscope screen shot...................................................................................35 Fig 28 PCN Signal path .......................................................................................................36 Fig 29 RF controls window .................................................................................................38 Fig 30 Measurement points..................................................................................................39 Fig 31 Measuremet points 2.................................................................................................40 Fig 32 Oscilloscope screen shots .........................................................................................41 Fig 33 Oscilloscope screen shots, TX IQ ............................................................................41 Fig 34 Oscilloscope screen shots .........................................................................................42 Fig 35 PCN TX troubleshooting ..........................................................................................43 Fig 36 PCN TX RF control window ....................................................................................43 Fig 37 PCN TX troubleshooting ..........................................................................................44 Fig 38 VCTXO measurement points ...................................................................................45 Fig 39 VCTCXO signal .......................................................................................................46 Fig 40 VCTCXO buffer signal ............................................................................................47 Fig 41 PLL synthesizer troubleshooting1............................................................................48 Fig 42 PLL synthesizer troubleshooting 2...........................................................................49 Fig 43 SCLK clock signal....................................................................................................63 Fig 44 SENA enable signal..................................................................................................63 Fig 45 SDATA data signal...................................................................................................64 Fig 46 HAGAR _RESET_X hagar reset "on"....................................................................64 Fig 47 MCU Clock Waveform 32.768kHz.......................................................................74 Fig 48 DSP Clock Waveform 11.9952MHz .....................................................................75 Fig 49 FMR Clock Waveform 75kHz .............................................................................76 Fig 50 USB Clock Waveform 6MHz ...............................................................................77 Fig 51 General UI troubleshooting ......................................................................................78 Fig 52 Display Module - No Display,..................................................................................79 Fig 53 LCD/Keyboard LED - No Light..............................................................................80 Fig 54 Keyboard/Hotkey do not respond.............................................................................81 Fig 55 Music player - no audio ............................................................................................82 Fig 56 No FM audio or manual FM tuning malfunction ....................................................83
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FM recording not possible........................................................................................84 Stereo audio malfunction..........................................................................................85 Stereo headset microphone malfunction ..................................................................86 Mono headset malfunction .......................................................................................86 Phone speaker malfunction.......................................................................................87 Phone microphone malfunction................................................................................88 USB detection malfunction ......................................................................................89
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BB CMT DC ESD f: LF: LO P: PA PCB PLL RF RX T: TX UHF V: VCO VHF Baseband Cellular Mobile Telephone Direct Current Electro Static Dicharge Frequency of signal (measured with Spectrum Analyzer) Low frequency (measured with oscilloscope) Local Oscillator Power of signal in decibels (dB) (measured with Spectrum Analyzer) Power Amplifier Printed Circuit Board Phase Locked Loop Radio Frequency Receiver Time between pulses Transmitter Ultra High Frequency Voltage of signal (measured with oscilloscope) Voltage controlled oscillator Very High Frequency
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The phone is dead
The voltage at C404, C202, C226, C227, C228 is = 3,6V Yes Voltage on R224 = 3,6V Yes Voltage at C316= 2,8V Voltage at C243 = 2,8V when WDDISX is grounded Yes See section "Phone is unable to stay ON"
No
Failiure in Vbatt line. Check X203, R220.
No
Defective N201 or PCB
No
WDDISX = 0 when PWR switch is pressed Yes
No
Check power switch Check WDDISX line : PWR switch -> R402 ->R224 Ok
Defective CCONT (N201) Defective PCB
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Because of the use of ìBGA components it is not possible to verify if there is a short-circuit in any of the lines to and from the MAD2WD1 and the SRAM/flash circuits. The troubleshooting diagrams for flash programming are shown next page.
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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 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. Yes No
No
See section: (2)
No
See section: "Phone is dead"
R308 (PURX) = "1" (2.8V) after 60ms
Check C220 (SLEEPCLK) = 32KHz square wave Yes
No
Check sleepclock circuit: B200, R214,...
Yes Check buffer: V502, R559,... V502 coll. (RFC) = 13MHz clock, 700mVpp typ. Yes Check the following lines: M-BUS: X202 pin 3 -> X201 pin 4 -> V204 pin 5 FBUS_RX: X202 pin 8 -> X201 pin 2 -> V204 pin 3 FBUS_TX: X202 pin 7 -> X201 pin 1 -> V204 pin 1 GND: X202 pin 4 -> X201 pin 3 -> GND Check also pull-up and -down resistors: R304, 302, 307 Ok Defective D300 MAD2 or D301 Flash
Defective N201 CCONT or overloaded PURX line No Check G502 VCXO 26MHz Ok Defective N500 HAGAR
No
Defective PCB
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Flash programming doesn't work
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External RAM error
Yes
Check for activity on control lines for SRAM : J323 (RAMSelX) No
Yes
Defective SRAM (D302)
No
Defective MAD2 (D300) or short circuit under the SRAM Yes Check the type of the flash
Algorithm file or alias not found. No MCU flash Vpp Error
Yes
Flashing via X202 ?
No
No Voltage at R310 higher than 1,7 V when flashing ? Yes
Defective flash or flashing software has wrong version
No Defective MAD2 (D300), defective voltagemonitor (D304) or flashing software has wrong version or short circuit under SRAM
Unknown error. See section "Phone Dead"
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Phone unable to stay on or phone is jammed.
CCONT watchdog is served, J200 pulses "1" ->"0" Yes Software is able to run. Check UI (keys and display) Yes Ground the watchdog (Vbb = 2,8 V) (VXO = 2,8 V) No
See section "Phone is dead"
Yes
PURX (J374) = "1" (2,8V) after 60 msec.
No
Check sleepclk (C220) = 32 kHz square wave. Yes
No
Check sleepclk circuit (B200, R214,....)
Yes
Defective CCONT (N201) or overloads on the PURX line. No Check G502, 26 MHz OK Defective Hagar
Check RFC buffer (V502, R559, C560...)
Yes Possible defective ICs : MAD2 (D300) SRAM (D302) FLASH (D301) CCONT (N201)
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Phone doesn't register to a network or the phone is unable to make a call
C207 (Vcobba) > 2,7V Yes
No
Check CCONT (N201)
Vref at C201 =1,5V
No
Check C210, R509 and C536.
Yes Check supply voltage during RX slot : C234 (VCP) > 4,8V C240 (VRX) > 2,7V C245, R202, C239 (VSYN_1) > 2,7V C241 (VSYN_2) > 2,7V During TX slot : C242 (VTX) > 2,7V Yes Check synthesizer lines during RX slot R300 (->D300) R301/302 (->D300) for pulsing 1<->0 Yes Check RF control lines during RX slot : R502 = 0-1,2V typ. R514 = 0-2,3V max. Yes Check analog data signals during RX slot : R507 (RxIN, COBBA) = 0-1,5V C514 (RxIP, COBBA) = 0-1,5V Recieved signals is biased to 1,2 DC, nominal amplitude = 125-450 mVpp AC Yes Check RF control lines during TX slot : J503 (TxP, MAD2) = "0"<->"1" (2,8V) R518 (TxC, COBBA) = 0-2,3V max. Yes Check analog data signals during TX slot : TxIN, COBBA TxIP, COBBA TxQN, COBBA TxQP, COBBA Transmitted signals is biased to DC, nominal amplitude = 300 mVpp, freq. = 64 kHz Yes Check RF part. No If TxC error : Check COBBA (N100) If TxP error : Check MAD2 (D300)
No
Check CCONT (N201)
No
Check MAD2WD1 (D300)
No
Check COBBA (N100)
No
If DC error : Check COBBA (N100) else : Check RF part.
No
Check COBBA (N100)
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Vsim according to spec.: 2,8V min. (3V SIM card) 4,5V min. (5V SIM card) Yes ATR data can be seen at C222 towards R213 Yes ATR data can be seen at SIMIF4 (J202) Yes J206 (SIMI/O_C line) is 1 during ATR meassage Yes Check CCONT (N201)
No
Defective CCONT (N201)
No
Check X400 and R213
No
Check CCONT (N201)
No
Check MAD2 (D300)
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Microphone does not work and there are no mechanical or electrical problems
12 C115 towards R115 (bias)= 2.1 V <(6 12
Check R107, R115, V101, C113, C115
Check mic line to COBBA: R111, C120, C121, C407
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Headset earpiece does not work and there are no mechanical problems Check R108, C103, C408
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Headset microphone does not work and there are no mechanical or electrical problems
12 R105 (XMICIN line towards COBBA (N100) = 2.1 V <(6 12 Check mic line to COBBA: R111, C120, C121, C407
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Replace COBBA (N100)
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Nothing happens when a charger is connected to the phone Yes The voltage at R210 towards R209 > 0,4V Yes Replace CCONT (N201) No
Check F200, L202, R209, R210
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"Not charging" message appears in the display Yes The voltage at R220 towards C236 (BSI, N201) = 0,8V when a charger is connected. Yes The voltage at R220 towards C236 (BTEMP, N201) = 0,5V when a charger is connected. Yes When the battery is an NI battery, then the voltage at R208 towards R200 must be app. Vb200 mV. When the battery is a LI battery, the voltage at R208 towards R200 must be Vb Yes The voltage at R208 towards R200 and CHAPS (N200) rises slowly when a charger is connected. Yes J201 performs as follows : Li battery : 0 -> Vmax-200mV PWM high ("1", 2,8V) Vmax-200mV -> Vmax PWM = 1 Hz Ni battery : PWM = 1 Hz Yes Check PCB No No No
Check X203, R221, R222
Check X203, R221, R222
No
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Check N200
No
Check N200
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· 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. The values in the following will have these 20 dB subtracted and represent the real value seen on the spectrum analyzer). LF (Low frequency) and DC measurements should be done with a 10:1 probe and an oscilloscope. The probe used in the following is 10M/8pF passive probe. If using another probe then bear in mind that the voltages displayed may be slightly different.
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Apply -80dBm 942.667MHz signal from generator to antenna connector Yes Oscilloscope at RXI Signal 950mVpp DC offset 1,1V Frequency 67,7kHz Change generator level to -55dBm
EGSM Fault tree
No
Yes
Spectrumanalyzer Spectrumanalyzer GSM LNA out No 1st Dual SAW In1 -73dBm -85dBm Yes
No
GSM_RX_SW -84dBm Yes
No
Check RX/TX Switch Z502
Yes
Oscilloscope LNA_G 2.4-2.8V LNAB_D 2.4-2.8V Yes Oscilloscope V501, RFout 2.1-2.2V V501, RFin 0.8-0.9V Yes Check V501
No
Oscilloscope VRX 2.7V Check Hagar serial interface Yes Check Hagar N500
No
Check BaseBand
Check 1st Dual RX SAW Z501
EGSM chain functional
Yes
No
Check R514, C539, V501,C541,C537, C533
Spectrumanalyzer No T501, unbal -75dBm Yes Oscilloscope VRX 2.7V Check Hagar serial interface Yes
Check C534, Z500
No
Check BB
Check Hagar N500
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Last edit 07:49 15.03.00 HDa12 RF Troubleshooting.doc
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Apply -80dBm 1842.867MHz signal from generator to antenna connector Yes Oscilloscope at RXI Signal 1.5Vpp DC offset 1,1V Frequency 67,7kHz Change generator level to -55dBm Spectrumanalyzer Spectrumanalyzer 1st Dual RX SAW V500, RFout No In2 -72dBm -92dBm Yes Yes Oscilloscope LNAB_G 2.4-2.8V LNA_P 0V Yes Oscilloscope V500, RFout 2.1-2.2V No V500, RFin 0.8-0.9V Yes Check V500 Check R503, L502, V500, C519, C521, C523, C525, L505, C510 Yes Check Hagar N500 Oscilloscope VRX 2.7V Check Hagar serial interface PCN_RX -91.5dBm Yes Check RX/TX Switch Z502
PCN Fault tree
No
Yes
No
No
No
No
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Check Z500
EGSM chain functional
Yes
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No
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Last edit 07:49 15.03.00 HDa12 RF Troubleshooting.doc
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Measure TX power on "ANT" Power > 30.5 dBm in 50 ohm. Measure TX power on GSM_Tx. Power ~ 8 dBm in 500 ohm Measure TX power on "Pout". Power ~ 8 dBm in 500 ohm Measure TX power on "Pin". Power ~ -25 dBm in 500 ohm Measure TX power "TX buffer input" Measure TX power unbal T504 Power ~ -30 dBm in 500 ohm With Osc check: VTX = 2.7V + discretes around T504
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Check POGO pins, C593, L510
With Osc on RXTX switch check: Vc1 = 0V, Vc2 = 2.7V
Check L515 (Coupler)
With Osc on PA check: Vpctrl GSM900. Vpctrl ~ 1.7Vpp (see figure ?)
With osc on TX buffer check: TXBUF = 2.7V
Check Z503
Yes
Yes
Yes
No
Check RXTX switch
Check PA N502
Check V601, V602 + discretes around No
No No No
With Osc check TXC (see figure below)
Check Hagar + Serial bus
Yes
With Osc check "Vpctrl" ~ "TXC"?
No
Check V503 + discretes around
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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 No Measure TX power unbal T503. Power ~18 dBm in 500 ohm No With Osc check: VTX = 2.7V + discretes around T503
Measure TX power on "ANT" No Power > 27.5 dBm in 50 ohm
Yes
Yes
Yes
Yes
Yes
Check POGO pins, C593, L510
With Osc on RXTX switch check: Vc1 = 2.7V, Vc2 = 0V
Check L515 (Coupler)
With Osc on PA check: Vpctrl GSM1800. Vpctrl ~ 1.5Vpp
No
With Osc check TXC (see figure ?)
Check R542, R539, R543, C566
Yes
Yes
Yes No
Check RXTX switch
Check PA N502
With Osc check "Vpctrl" = "TXC"?
No
Check V503 + discretes around
No No
Check Hagar + Serial bus
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VCTCXO: Out (26 MHz) - G502
VCTCXO: Vtcxo (2.7V) - G502
VCTCXO buffer Input - V502
RFC (13 MHz) - L511
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From WinTesla chose: Product > Band > EGSM Testing > RF Controls > Rx continuous > Ch 60
Spectrum Analyzer VCO output ( G500 out) 3788 MHz
No
Oscilloscope VCTCXO Power Supply (G502 Vcc) 2,7 V
Yes
Oscilloscope VCTCXO output (G502 out) 26 MHz, approx. 1.2 Vpp
Yes
Oscilloscope VCO Power Supply (G500 Vcc) 2,7 V
Yes
Yes
PLL block functional
No
Check CCONT, Software?? Phone not in function
No
VCTCXO is dead
No
Check CCONT, Software?? Phone not in function
Check HAGAR, wrong writting to HAGAR (SCLK,SDATA,SLE, HAGARRESET)
Yes
Spectrum Analyzer VCO output ( G500 out) Some signal between 3 and 4 GHz
No
VCO is dead
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Oscilloscope Turn the phone ON and measure power supply fo r the VCTCX ( G502 Vcc) 2,7 V
Oscilloscope
Oscilloscope
Oscilloscope
Yes
Measure the output signal of the VCTCXO ( G502 out ) approx. 1.2 Vpp, 26 MHz
Yes
13 MHz buffer input approx. 0.4 Vpp (C559)
Yes
13 MHz buffer output approx. 0,6Vpp (L511)
Yes
No
Check CCONT, phone is 'dead'
No
VCTCXO is 'dead'
No
Check HAGAR, divider by 2 in HAGAR not in function ( not enabled)
No
Buffer transistor not in function ( V500 )
Reason is something else ( Software, battery, etc. )
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· · · · · · · · · Display Module LCD/Keyboard Backlight Keyboard/Hotkeys function Music Player FMR Player Line-In Recording FMR Recording Phone Audio Routing USB Connectivity for Upload/Download
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Diagnostic Tests:
· · Replace a good display module and verify. Visual inspection of the 36-pin B2B connector.
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· · · Check VBAT with DVM Replace failed LED Visual inspection of the 36-pin B2B connector.
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· · · Check VBAT with DVM Replace failed LED Visual inspection of the 36-pin B2B connector.
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· · · Check that the dome sheet is properly aligned with the keypads. Ensure that there are no foreign particles on the keypads Check side keys SW753, SW754, SW755, and SW756. Ensure they are intact. Check presence of VBAT, VBB and UC_VCC @ U501 (Table 7, "UI module
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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 = 2.8V
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· · · · U301 MCU U101 DSP U201 NAND Memory U601 Audio Codec
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· · Check the stereo headset has proper contact with the UI module. Check present of VBAT, VBB and UC_VCC, DVCC, AVCC, CVCC (Appendix A Table 2) Check operating current during play mode (Table 8, "UI current consumption in normal conditons," on page 73). Check present of clock frequency 32.768kHz @ U301-Pin9 using oscilloscope (Figure 47, "MCU Clock Waveform 32.768kHz," on page 74). Check present of clock frequency 11.9952MHz @ U101-Pin97 and U601Pin25 (Figure 48, "DSP Clock Waveform 11.9952MHz," on page 75). Connect Stereo headset and check signal line ST_DET @ U301-Pin20 (Figure 9, "Accessories connection indication," on page 73) Check for digital activities @ U601-Pin4 using oscilloscope. This check will verify that the DSP are sending music information to the Codec. Check for analog activities @ U601-Pin9 and U601-Pin10 using oscilloscope. This check will verify that the Codec decode the digital music information correctly.
·
·
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· · · · · 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. Check presence of VBAT, VBB and UC_VCC, DVCC, AVCC, CVCC (Table 7, "UI module voltages," on page 73) Check operating current during recording mode (Table 8, "UI current consumption in normal conditons," on page 73). Check presence of clock frequency 32.768kHz @ U301-Pin9 using oscilloscope (Figure 47, "MCU Clock Waveform 32.768kHz," on page 74). Check presence of clock frequency 11.9952MHz @ U101-Pin97 and U601Pin25 (Figure 48, "DSP Clock Waveform 11.9952MHz," on page 75). Connect Line-In jack and check signal line LIN_DET @ U301-Pin21 (Table 9, "Accessories connection indication," on page 73) Check the Audio Routing Select, U602-Pin10 and U602-Pin9 are routed corrected (Table 10, "Audio routing select," on page 73). Check for analog activities @ U601-Pin19 and U601-Pin20 using oscilloscope. This check will verify that the music is successfully routed to the Codec. Check for digital activities @ U601-Pin6 using oscilloscope. This check will verify that the Codec are sending digitized music information to the DSP. Verify recorded music file in the NAND using NAM.
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· · · · U301 MCU U101 DSP U201 NAND Memory U601 Audio Codec
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· 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. Check presence of VBAT, and FM_VCC (Figure 47, "MCU Clock Waveform 32.768kHz," on page 74). Check operating current during recording mode (Table 7, "UI module voltages," on page 73). Connect Stereo headset and check signal line ST_DET @ U301-Pin20 (Table 8, "UI current consumption in normal conditons," on page 73) Check the presence of 75kHz @ U801-Pin27 (Fig