Related Manuals for Nokia NSM-2 Series
Summary of Contents for Nokia NSM-2 Series
- Page 1 PAMS Technical Documentation NSM–2 Series Transceivers Disassembly & Troubleshooting Instructions E Nokia Mobile Phones Ltd. Issue 1 12/1999...
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Page 2: Table Of Contents
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Page 3: Disassembly Of Nsm-2
Step 2. Push the slide edge outwards. NOTE: Use only numbered side 2 to release the slide. Step 3. Lift the slide up simultaneously and the slide will be released. E Nokia Mobile Phones Ltd. Page 3 Issue 1 12/1999... - Page 4 Remove A–cover, speaker screws, use 17 and power button. Ncm torque. Remove keymat module screws (2 or 3pcs de- pending on the model). NOTE: When assembling the screws, use 17 Ncm torque. E Nokia Mobile Phones Ltd. Page 4 Issue 1 12/1999...
- Page 5 NOTE: Be careful not to damage the SW/slide switch on the PCB. Parts can be separated: – lcd module – PCB – buzzer rubber – metal gasket – bottom connector – SIM connector – vibra E Nokia Mobile Phones Ltd. Page 5 Issue 1 12/1999...
- Page 6 Remove the volume key 2. Turn the phone around. Press down battery conector springs Release the latch snap. using Battery Connector Extractor Tool. Remove the latch and latch spring. Battery connector will be released. E Nokia Mobile Phones Ltd. Page 6 Issue 1 12/1999...
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Page 7: Transceiver Troubleshooting
MCU READ MAD (D200) –> COMBO MEMORY (D210) J241 MCUWRX MCU WRITE MAD (D200) –> COMBO MEMORY (D210) J242 MCUAD1 MCU ADDRESS LINE 1 MAD (D200) –> COMBO MEMORY (D210) E Nokia Mobile Phones Ltd. Page 7 Issue 1 12/1999... - Page 8 MAD (D200) –> UI–SWITCH (N310) N310 PIN 6 BUZZER_CTRL BUZZER DRIVE UI–SWITCH (N310) –> BUZZER (B301) N310 PIN 7 KBLIGHTS KEYPAD AND DISPLAY BACKLIGHT CON- TROL MAD (D200) –> UI–SWITCH (N310) E Nokia Mobile Phones Ltd. Page 8 Issue 1 12/1999...
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Page 9: Testing
A/D reading is also zero. Now the slope is known and A/D readings can be calibrated. Calibration is included in VBATT A/D reading task. E Nokia Mobile Phones Ltd. Page 9 Issue 1 12/1999... -
Page 10: Troubleshooting
– solder joints are OK Before changing anything ALL SUPPLY VOLTAGES AND SYSTEM CLOCK / SLEEP CLOCK should be checked. Clock signal 26MHz VCXO buffer G830 V800++ 13MHz HAGAR N505 C213 E Nokia Mobile Phones Ltd. Page 10 Issue 1 12/1999... -
Page 11: System Clock
Check the signal from the RF side Change the Hagar oskilator VCXO G830 output fron N505 C833. There should be 26MHz signal. IF THERE ISN’T Change the VCXO G830 System clock picture. E Nokia Mobile Phones Ltd. Page 11 Issue 1 12/1999... -
Page 12: Sleep Clock
Layout picture B signal Clk 32kHz, should be like in SLEEP CLOCK picture. IF NOT Check R100, R154, R102, C102, C101, C113 and B100 IF OK Change the CCONT N100 Sleep clock picture. E Nokia Mobile Phones Ltd. Page 12 Issue 1 12/1999... -
Page 13: Power Supplies
NSM–2 PAMS Technical Documentation Disassembly & Troubleshooting Instructions Power Supplies Measure power supplies. Test points are shown in layout picture A. Vbat Vcore Vsyn2 Vsyn1 Vcobba Vref E Nokia Mobile Phones Ltd. Page 13 Issue 1 12/1999... - Page 14 Cconts digital parts keep MAD in reset by keeping PURX down for a delay of 62ms. Here is shown the start up sequence picture. Ch1 = Vbb Ch2 = VXO Ch3 = SleepClk Ch4 = PURX (see picture B) E Nokia Mobile Phones Ltd. Page 14 Issue 1 12/1999...
- Page 15 NSM–2 PAMS Technical Documentation Disassembly & Troubleshooting Instructions CLK 32 kHz PURX Ccont int. VXO Pwr ESysResetX FBUSTx MCUAd1 MCUWrX FBUSRx MBUS ROM1SelX MCURdX E Nokia Mobile Phones Ltd. Page 15 Issue 1 12/1999...
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Page 16: Phone Is Totally Dead
MCU self tests are devided to those executed while power up (start up tests) and ones that can be executed with connected PC. The tests and included items are as follows: E Nokia Mobile Phones Ltd. Page 16 Issue 1 12/1999... - Page 17 A. Power off B. Security data C. EEPROM tune checksum D. PPM checksum E MCU download DSP F. DSP alive G. COBBA serial H COBBA parallel I. EEPROM checksum K. PPM validity E Nokia Mobile Phones Ltd. Page 17 Issue 1 12/1999...
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Page 18: Sim Related Faults
IF NOT OK Check the Vsrm (C131 RF side head) Change the CCONT N100 V5V (C108 bottom connector side head) IF NOT OK Check the regulator N600, V116, C132 and C131 E Nokia Mobile Phones Ltd. Page 18 Issue 1 12/1999... -
Page 19: Audio Faults
Check the voltage in resistor Check R266, C268, L287 and V250 R267 RF side head. Voltage should be about 2.1V Check the R268,C 274,C263,C278 Change the COBBA N250 and C262 E Nokia Mobile Phones Ltd. Page 19 Issue 1 12/1999... - Page 20 Change the COBBA N250 Headset earphone doesn’t work and there isn’t any mechanical problem Check R 257,R256, R270, L284, L283 C284, C283, C 296, C 297, C261and C255 Change the COBBA N250 E Nokia Mobile Phones Ltd. Page 20 Issue 1 12/1999...
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Page 21: Charging Fault
Display ” not charging” Check charge voltage with wintesla Check F101, V100,R104 and R103 Check charge current with wintesla IF NOT OK Check V101 and R131 Change the Chaps N101 E Nokia Mobile Phones Ltd. Page 21 Issue 1 12/1999... -
Page 22: Rf Troubleshooting
TCXO/2 (13 MHz) TX_balout(GSM) RX_GSM (balun_in) Vchp 1.35V (RX) VCO_out 1.2V (RX) RXI (filt) TCXO (26 MHz) VCO_ctrl RXQ (filt) RX I/Q (ADC) Vsynte Vtcxo Vlna +1.5V Vmod Vcobba Vrxrf E Nokia Mobile Phones Ltd. Page 22 Issue 1 12/1999...