Programmes After Market Services NSB-5 Series Transceivers Troubleshooting Instructions Issue 1 03/01 Nokia Mobile Phones Ltd.
NSB-5 Troubleshooting Instructions Page 2 Nokia Mobile Phones Ltd.
PAMS Technical Documentation NSB-5 Troubleshooting Instructions Contents Page No Troubleshooting ............................................................................................................. 5 Phone is Totally Dead ..................................................................................................5 Flash Programming Doesn’t Work ..............................................................................6 Power Doesn’t Stay on or Phone is Jammed ..........................
NSB-5 Troubleshooting Instructions PAMS Technical Documentation List of Figures Page No Figure 1: Fault Finding for Totally Dead Phone ............................................................... 6 Figure 2: Fault Finding for Flash Programming Errors ...................................................... 8 Figure 3: Fault Finding for Flash Programming Errors (Cont’d) .......................................... 9 Figure 4: Fault Finding for Flash Programming Errors (Cont’d) .............................
PAMS Technical Documentation NSB-5 Troubleshooting Instructions Troubleshooting The following hints should facilitate finding the cause of the problem when the circuitry seems to be faulty.
NSB-5 Troubleshooting Instructions PAMS Technical Documentation Phone is totally dead. Measure voltage at N101 pin 5 (VBAT) Measure voltage at V103 pin 1 Yes 3.6V 3.6V Yes No No Measure voltage at V109 pin 4 (Vbb) 2.8V C112 (VXO) 2.8V When PWR switch is pressed or WDOGDISABLE is grounded. Failure in VBAT. Check X101, X102, L710 Voltages OK? Faulty PCB Measure voltage at R413 (end towards CCONT) when pwr-switch (X400 pin 7) is pressed or WDOGDISABLE (X201 pin 11) is grounded.
PAMS Technical Documentation NSB-5 Troubleshooting Instructions The main differences between these are: • FLASH programming voltage (Vpp) is produced a different way, and • Signal routings are different. The fault-finding diagrams for flash programming are shown in Figure 2, Figure 3, and Figure 4. In cases of flash programming errors, the flash prommer can provide some information about a fault.
NSB-5 Troubleshooting Instructions PAMS Technical Documentation FLASH Programming doesn't work. Check if fault information from Prommer is one of the following: a) MCU doesn't boot b) serial dataline failure c) serial clock line failure failure is one of the above mentioned? No A Yes Check WDDIS line: X201 pin 11 -> R413 end towards N100 and R413 other end -> X400 pin 7 Connect watchdog disable (WDDIS R413 end towards N100) to GND.
NSB-5 Troubleshooting Instructions PAMS Technical Documentation B Check that the following lines are OK: FCLK (MBUS) line: X200 pin 11, X201 pin 3 -> V102 pin 5 FTX (fbus_tx) line: X200 pin 13, X201 pin 1 -> V101 pin 5 FRX (fbus_rx) line: X200 pin 12, X201 pin 2 -> V101 pin 4 Check also pull-up and -down resistors: R106, R306, R307 GND: X200 pin 14, X201 pin 7 -> GND OK? No Repair or defective PCB Yes MAD or FLASH faulty.
NSB-5 Troubleshooting Instructions PAMS Technical Documentation A External RAM fault? No ID problem? Yes Yes Check pins of SRAM (D302) Check control lines of SRAM: RAMselX ... NO MCU FLASH Vpp Error No Check type of FLASH Check soldering of FLASH (Both FLASHES) Yes Unknown fault. Try phone totally dead. Flashing from X201? No Check R302 and R303 in both ends. Voltage higher than 1.7V during flashing? Yes Check Vpp: X201 pin 10 to R303 (end towards D301).
PAMS Technical Documentation NSB-5 Troubleshooting Instructions Power Doesn’t Stay on or Phone is Jammed If this kind of fault occurs after flash programming, there may be open pins on ICs or other discrete components. Solder joints on discrete capacitors and resistors and open joints on components with pins, such as D302 (SRAM), should be checked first.
NSB-5 Troubleshooting Instructions PAMS Technical Documentation Power doesn't stay on or phone is jammed Check X400 pin 13 while X400 pin 2 is high pin 13 pulsing? Yes Software is able to run in phone. Check UI-module. If power is switched off in a few seconds, check BSI and BTEMP lines. No Connect R413 (end towards N100) to GND C308 (end away from B400 buzzer) = 2.8V and C112 (end towards N100) = 2.8V No Vbatt is correct 3.6V Yes Yes C N100 is faulty.
NSB-5 Troubleshooting Instructions PAMS Technical Documentation the display. This may indicate open solder joints on components, faulty PCB, or other damage to the phone has occurred. “Contact Service” may also indicate that the flash software has become corrupted. The phone may then require either a simple re-flash or, in some cases, a total erase and re-flash.
NSB-5 Troubleshooting Instructions PAMS Technical Documentation 1 init initialize dsp constants download patch code download MAD2WD1 pin D8 (DSPXF) initializatio done J314 Figure 7: The states of DSP after power on 2 PSW search last PSW OK channel scan starts synchronizatio OK MAD2WD1 pin D8 (DSPXF) J314 Figure 8: The states of DSP after power on 3 send RACH RACH OK go SDCCH imediate OK MAD2WD1 pin D8 (DSPXF) J314 Figure 9: The states of DSP after power on Page 14 Nokia Mobile Phones L
NSB-5 Troubleshooting Instructions PAMS Technical Documentation Phone doesn't register to the network or phone doesn't make a call Analog supply voltage to COBBA is > 2.7V? (C201) No Check N100 Yes Analog reference to COBBA is 1.5V? (C200) No Check R200, C140, C167 Yes Check: Supply voltage Vcp (C126) > 4.8V Supply voltage VRX_1 (C108) > 2.7V Supply voltage VRX_2 (C137) > 2.7V Supply voltage VSYN_2 (C136) > 2.7V during the receiving slot Supply voltage VTX (C141) > 2.
NSB-5 Troubleshooting Instructions PAMS Technical Documentation D RF control lines: AGC (R610) 0->2.3Vmax during receiving slot AFC (C720) 0- 1.2V typ. during receiving slot OK? No Check N200 Yes Analog data signals: RxIP & RxIN (C640, C641) 0->1.5V DC during receiving slot Recieved signal is biased to DC, amplitude 50mVpp nominal and frequency 13MHz OK? No Check N200 if DC fail or RF part Yes RF control line: TxC (C524) 0->2.
PAMS Technical Documentation NSB-5 Troubleshooting Instructions SIM Card is Out of Order The hardware for the SIM interface from MAD2WD1 (D300) to the SIM connector (X100) can be tested without a SIM card. When the power is switched on and if the BSI line (X102;1) is grounded by a resistor, all of the used lines (VSIM, RST, CLK, DATA) rise up to 5V four times. Thus, “Insert SIM card” faults can be found without a SIM card.
NSB-5 Troubleshooting Instructions PAMS Technical Documentation Insert SIM card fault Voltage < 1.5V on top of R123 when BSI resistor is connected Yes Check X102, R115, R123, C119 No VSIM (C143), DATAO (C131), SIMRSTO (C130) and SIMCLKO (C129) lines rise up to 5V after power on Yes Check X100, R120 No SIMPWR (J318), DATAA (J303), SIMRSTA (J315), SIMCLK (J316), SIMIOC (J317) rise to 2.
NSB-5 Troubleshooting Instructions PAMS Technical Documentation Card rejected fault VSIM according to spec. 2.8Vmin (3V card) 4.5Vmin (5V card) No Faulty PCB, N100 Yes ATR data can be seen at C131 No Check X100, R120 Yes ATR data can be seen at J303 No Check N100 Yes SIM_IOControl line (J317) is "1" during ATR message No Check D300 Yes Check D300 Figure 13: Fault Finding for Rejected SIM Card Issue 1 03/01 Nokia Mobile Phones Ltd.
NSB-5 Troubleshooting Instructions PAMS Technical Documentation Audio failure: Uplink (microphone) and downlink (earphone) are broken Uplink and downlink are broken Voltage over C113 (HOOKDET) is 2.8V without external audio devices No Check R113, R112, C113, C176 Yes Voltage over C110 (HEADDET) is 2.
NSB-5 Troubleshooting Instructions PAMS Technical Documentation Audio failure: Uplink (microphone) is broken Uplink is broken Voltage at E101 is 1.8V Voltage at E100 is 0.3V during call No Check: microphone connections (through slide) micbias components (V111, R148, R116, R119, V100) Micbias control line (one side of R149) during call Yes Voltage on COBBA side of C117 & C121 is 1.
NSB-5 Troubleshooting Instructions PAMS Technical Documentation Audio failure: Downlink (earphone) is broken Downlink broken Voltage on C203 & C204 is 1.
NSB-5 Troubleshooting Instructions PAMS Technical Documentation Charger Failure Nothing happens when charger is connected Voltage level at R104 is higher than 0.4V when charger is connected No Check X200, F100, R101, L100, C111, C101, R103, R104 Yes Check N100 Figure 17: Fault Finding for Charger Failure Issue 1 03/01 Nokia Mobile Phones Ltd.
NSB-5 Troubleshooting Instructions PAMS Technical Documentation Display information: Not charging Voltage at C119 is about 0.8V, power on, BSI value 39k No Check X102, R115, R123, C119 Yes Voltage at C120 is about 0.
