Nokia NPM-10 Series Troubleshooting Instructions
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Nokia NPM-10 Series Troubleshooting Instructions

Nokia NPM-10 Series Troubleshooting Instructions

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CCS Technical Documentation
NPM-10 Series Transceivers
Troubleshooting Instructions
Nokia Corporation
Issue 1 03/2003
Confidential

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  • Page 1 CCS Technical Documentation NPM-10 Series Transceivers Troubleshooting Instructions Nokia Corporation Issue 1 03/2003 Confidential...
  • Page 2 NPM-10 Troubleshooting Instructions CCS Technical Documentation Nokia Corporation Page 2 Confidential Issue 1 03/2003...

  • Page 3: Table Of Contents

    Phone does not register onto the network, or the phone cannot make a call .....12 SIM-related faults ......................13 Insert SIM card fault ....................13 SIM-Card rejected ....................14 Audio-related faults ....................15 Charging failure ......................17 Nokia Corporation Issue 1 03/2003 Confidential Page 3...
  • Page 4 NPM-10 Troubleshooting Instructions CCS Technical Documentation Nokia Corporation Page 4 Confidential Issue 1 03/2003...

  • Page 5: Baseband Testpoints

    In this section, fault-finding charts are provided for the most common NPM-10 errors. NOTE : Since both D200 (UEM) and D400(UPP) are underfilled, they cannot be replaced. If either D200 or D400 is defective, the entire PWB has to be discarded. Nokia Corporation Issue 1 03/2003 Confidential...

  • Page 6: Phone Is Dead

    This means that the phone does not draw any current at all when supply is connected and/or the power key is pressed. It is assumed that the voltage supplied is 3.6 VDC. The UEM will prevent any functional- ity whatsoever at battery/supply levels below 2.9 VDC. Nokia Corporation Page 6 Confidential Issue 1 03/2003...
  • Page 7 C227 C227, PWB. VR3 = 2,78VDC Else defective D200* J425 Check : 26 MHz clock min. C227, PWB. 300mVACpp, Else defective D200* probe Cin=10-13 pF/10M Check : D450 (Flash). Else defective D200* Nokia Corporation Issue 1 03/2003 Confidential Page 7...

  • Page 8: Flash Programming Does Not Work

    - Phone doesn't set FBUS_TX line low Because of the use of uBGA components, it is not possible to verify if there is a short cir- cuit in control- and address lines of MCU (UPP) and memory (flash). Nokia Corporation Page 8 Confidential...
  • Page 9 Voltage level at else defective D200 1.8VDC Try reading MCU ID Check: PWB, with Phoenix else defective D400 Reading OK? Try reading Flash ID with Phoenix Check: Replace D450 Reading OK? Reflash phone Nokia Corporation Issue 1 03/2003 Confidential Page 9...

  • Page 10: Power Does Not Stay On Or Phone Is Jammed

    Check: D450, UI functionality and keymat, lightguide, keys react to PWB. Else defective pressure? D400 J425 26 MHz clock Check: C425, C426, min. 300mVACpp, R425, R426, N600 probe Cin=10-13 pF/ (Mjoelner) Reflash phone Nokia Corporation Page 10 Confidential Issue 1 03/2003...

  • Page 11: Display Information: "Contact Service

    Check : Key is stucked A-cover, Keymat, Lightguide, PWB. Check : Flash checksum Reflash phone PWB. Else defective D450 (FLASH) ASIC version vs. compilation flag, PMM checksum PMM validity Warrenty Information State SIM-Lock Nokia Corporation Issue 1 03/2003 Confidential Page 11...

  • Page 12: Phone Does Not Register Onto The Network, Or The Phone Cannot Make A Call

    RXQP/N (R603) = 0-1,45VDC R610, R611 Check : Check analog signals during R610, R611,PWB. GSM-frame (TX slot): Else defective D200* TXIP/N (R610) = 1-1,75VDC or D400* TXQP/N (R611) = 1-1,75VDC Check RF Nokia Corporation Page 12 Confidential Issue 1 03/2003...

  • Page 13: Sim-Related Faults

    X387, R386, PWB. during power-up. Else defective D200* (See illustration below) SIM Interface OK Check for SIM voltage during power-up Ch1 : VSIM Ch3 : CLOCK Ch2 : RESET Ch4 : DATA Nokia Corporation Issue 1 03/2003 Confidential Page 13...

  • Page 14: Sim-Card Rejected

    SIM data pin. SIM Interface OK For reference a picture with normal SIM power-up is shown below. Normal SIM power-up sequence Ch1 : VSIM Ch3 : CLOCK Ch2 : RESET Ch4 : DATA Nokia Corporation Page 14 Confidential Issue 1 03/2003...

  • Page 15: Audio-Related Faults

    R165, C168, PWB. R165 towards UEM (bias) Else defctive D200* = 2,1V R153 Check : Check voltage level on R153, R157,C151, C152, R153 towards mic-lines (bias) C153, C154, PWB. = 1,0V - 1,4V Nokia Corporation Issue 1 03/2003 Confidential Page 15...
  • Page 16 R166, R151, C171 = 1,0V - 1,4V R152, R165, R168, C155, C156, C172, Replace : C170, C173, C174, Defective component Z101 Check XMIC line to UEM (D200) Error still present Defective D200* Nokia Corporation Page 16 Confidential Issue 1 03/2003...

  • Page 17: Charging Failure

    Phone is ON or OFF - battery nominal voltage (~3,6VDC) and no current from charger when connected Check : L100 F100, L100, V101, C100, VCHAR > 3,6VDC R200, System-connector. Defective D200 or D400* Nokia Corporation Issue 1 03/2003 Confidential Page 17...
  • Page 18 Voltage on R200 towards R200, PWB. D200 same as VBAT voltage Else defective D200* R200 Check : Voltage rises slowly on PWB. R200 towards D200 when Else defective D200* charger is connected. Check : Nokia Corporation Page 18 Confidential Issue 1 03/2003...

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