Nokia NSD-1 Disassembly & Troubleshooting Instructions
  1. Manuals
  2. Brands
  3. Nokia Manuals
  4. Cell Phone
  5. NSD-1 SERIES
  6. Disassembly & troubleshooting instructions
Nokia NSD-1 Disassembly & Troubleshooting Instructions

Nokia NSD-1 Disassembly & Troubleshooting Instructions

Hide thumbs Also See for NSD-1:
Table of Contents

Advertisement

Quick Links

Download this manual
PAMS Technical Documentation
NSD–1 Series Transceivers
Disassembly /
Troubleshooting
Instructions
E Nokia Mobile Phones Ltd.
Issue 2 09/00

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the NSD-1 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Nokia NSD-1

Summary of Contents for Nokia NSD-1

  • Page 1 PAMS Technical Documentation NSD–1 Series Transceivers Disassembly / Troubleshooting Instructions E Nokia Mobile Phones Ltd. Issue 2 09/00...

  • Page 2: Table Of Contents

    ........E Nokia Mobile Phones Ltd.

  • Page 3: Disassembly

    Press strongly towards arrow direction Carefully remove A–cover Note snap fixings ! Remove back cover screws (4 pcs) Remove C–cover NOTE! When assembling the B cover screws, use 17 Ncm torque. E Nokia Mobile Phones Ltd. Page 3 Issue 2 09/00...
  • Page 4 Remove UI–module Remove UI–module screws (2 pcs) and frame Remove engine module screw (1 pc) NOTE! When assem- bling the screw use 17 Ncm torque. Remove engine module Remove microphone E Nokia Mobile Phones Ltd. Page 4 Issue 2 09/00...

  • Page 5: Trouble Shooting

    Vref should switch to 1.251V. Check Vref at TP2. Valid voltages are 1.478 – 1.523V and 1.244 – 1.258V, respectively. Linear Regulators 1. Vbb E Nokia Mobile Phones Ltd. Page 5 Issue 2 09/00...
  • Page 6 EAD (accessory detection). These readings can be accessed through the service software. Check for shorts or opens on the resistor networks con- nected to these signals if the flash align test software reports that they are out of range. E Nokia Mobile Phones Ltd. Page 6 Issue 2 09/00...
  • Page 7 The second regulator is used to power the data cable accessory, so out- put is enabled only when a data cable accessory is detected. This regu- lator is also 2.8V nominal and can be checked at TP42 (shares SGND). E Nokia Mobile Phones Ltd. Page 7 Issue 2 09/00...

  • Page 8: Clocks

    (AMPS) signals. CAFE also acts as a clock squaring circuit and CDMA clock generator. Microphones The internal microphone is biased using transistor V201, which is pow- ered by VR1_SW (TP11 2.75VDC). Check also the output of V201). E Nokia Mobile Phones Ltd. Page 8 Issue 2 09/00...

  • Page 9: Mad4

    LCD functions, etc.) and mode control. The DSP sends control signals to the RF via PDMs. In order to control RF parameters such as TX_VCO_CAL or TX_LIM_ADJUST, a continu- E Nokia Mobile Phones Ltd. Page 9 Issue 2 09/00...

  • Page 10: Failures

    Check the power circuitry. This includes VBAT, Vref, and all of the linear regulators, as well as the Penta regulators. Verify also that the external regulator that powers MAD4 (LEADVCC) is functional. E Nokia Mobile Phones Ltd. Page 10 Issue 2 09/00...

  • Page 11: Flash Align

    Manual for more detail on RXD bus usage. The Rx voice data then goes back to CAFE on CAFESIO (0), and then to the earpiece or XEAR. CAFESIO (2) must also be active. E Nokia Mobile Phones Ltd. Page 11 Issue 2 09/00...
  • Page 12 ACP–9 : 4.3VDC to 8VDC Note: Lower VBAT = lower Vin levels Chrg_Ctrl 0 / 2.8 V From MAD4 to CHAPS Chrg_Ctrl 0 / 2.8 V From MAD4 to CHAPS E Nokia Mobile Phones Ltd. Page 12 Issue 2 09/00...
  • Page 13 Analog data (voice) From CAFÉ to RF section Address (23:0) 0 / 2.8 V From MAD4 to Flash and RAM Data (15:0) 0 / 2.8 V From MAD4 to Flash and RAM E Nokia Mobile Phones Ltd. Page 13 Issue 2 09/00...
  • Page 14 NSD–1 PAMS Technical Documentation Disassembly / Troubleshooting Instructions E Nokia Mobile Phones Ltd. Page 14 Issue 2 09/00...

  • Page 15: Rf Troubleshooting

    Also the loss will be different for the 1900MHz band and the 800MHz band hence sections for both. E Nokia Mobile Phones Ltd. Page 15 Issue 2 09/00...
  • Page 16 NSD–1 PAMS Technical Documentation Disassembly / Troubleshooting Instructions E Nokia Mobile Phones Ltd. Page 16 Issue 2 09/00...

  • Page 17: Testing Menu

    Channel 380 Power level 3. The transmitter power level can be set by selecting the “Power Level”. The TX_LIM_ADJ and other PDMs can be adjusted by selecting “PDM Ctrl”. E Nokia Mobile Phones Ltd. Page 17 Issue 2 09/00...

  • Page 18: Cell Band Cdma Fault Finding Setup

    “Tx Off” Box. The RX_IF_AGC is read by clicking the “Read” button. The LNA defaults to ON and OFF can be switch by ticking the “LNA” box. E Nokia Mobile Phones Ltd. Page 18 Issue 2 09/00...

  • Page 19: Pcs Band Cdma Fault Finding Setup

    Definition of Result The result of this tuning is the AFC PDM stored to eeprom which puts the VCTCXO at the correct frequency. Manual Verification Use WinTesla as follows: E Nokia Mobile Phones Ltd. Page 19 Issue 2 09/00...
  • Page 20 On SSP phones which do not have AMPS, clicking the “PCS AFC Tuning On” box will disable the CDMA modulation allowing AFC tuning to be per- formed on the RF carrier feed through. E Nokia Mobile Phones Ltd. Page 20 Issue 2 09/00...

  • Page 21: Amps Tuning Tx Power Levels

    550 otherwise the maximum allowable power may be exceeded. Definition of Result When all the power levels have been correctly tuned the values of TX_LIM_ADJ PDM are stored in eeprom RF_TUNE_AMPS_TX_LIM_ADJ_HANDLE. Manual Verification Use WinTesla as follows: E Nokia Mobile Phones Ltd. Page 21 Issue 2 09/00...
  • Page 22 L618 will have burnt out and become open circuit. Also check that the Tx VHF LO (TP105) and UHF LO (TP106) are present at the correct fre- quency and level (see below). E Nokia Mobile Phones Ltd. Page 22 Issue 2 09/00...
  • Page 23 Tx VHF LO Measured at TIF N604 Pin 3 (TP105) with a Hi Z Probe: UHF Cel LO measured at Odyssey N703 Pin 2 (TP106) with Hi Z probe when set to Channel 384: E Nokia Mobile Phones Ltd. Page 23 Issue 2 09/00...

  • Page 24: Amps Tuning Tx Modulation Index

    Check the following components in the Tx VHF VCO to see if they are damaged V501, V504, V508, V511 and L504. NOTE: If any of these components are replaced then the Tx Modulation Index must be re–tuned. E Nokia Mobile Phones Ltd. Page 24 Issue 2 09/00...

  • Page 25: Amps Tuning Rssi

    Measured at RIF Pin 17 (TP108) and the RSSI voltage at RIF N702 Pin 16 (TP109) which indicates the signal level into the receiver. Rx VHF LO Measured at RIF N702 Pin 20 (TP107) with a Hi Z Probe: E Nokia Mobile Phones Ltd. Page 25 Issue 2 09/00...
  • Page 26 NSD–1 PAMS Technical Documentation Disassembly / Troubleshooting Instructions LIM_P Measured at RIF Pin 17 (TP108) with a 10 Mohm probe: E Nokia Mobile Phones Ltd. Page 26 Issue 2 09/00...

  • Page 27: Amps Tuning Rx Audio Gain

    The stored eeprom value will result in 57.4mV RMS at XEAR when using JBA4 and receiving an RF signal with 1KHz tone and 2.9KHz deviation. Manual Verification Use WinTesla as follows: E Nokia Mobile Phones Ltd. Page 27 Issue 2 09/00...

  • Page 28: 800 Cdma Tuning Tx If Agc

    Definition of Result The results of the 3 point tuning are the 16 slope and offset values, which are stored to eeprom RF_TUNE_CELL_TX_AGC_OFF- SET_SLOPE_HANDLE. Manual Verification Use WinTesla as follows: E Nokia Mobile Phones Ltd. Page 28 Issue 2 09/00...
  • Page 29 NOTE: If any of these components are damaged and are replaced then the Tx IF AGC must be retuned. Tx Output spectrum at RF Connector with 30dB attenuator on Spectrum Analyzer: E Nokia Mobile Phones Ltd. Page 29 Issue 2 09/00...

  • Page 30: 800 Cdma Tuning Lna Switch

    PDM difference to the previously computed 3–point curve fit. This delta should be between 21 and 24dB. This is stored to eeprom handle RF_TUNE_RX_GS_HANDLE. Manual Verification Use WinTesla as follows: E Nokia Mobile Phones Ltd. Page 30 Issue 2 09/00...

  • Page 31: 800 Cdma Tuning Rx If Agc

    RX_IF_AGC is noted. This process is then repeated for signal levels 2 and 3. Definition of Result The results of the 3 point tuning are the 16 slope and offset values, which are stored to eeprom RF_TUNE_CELL_RX_AGC_OFF- SET_SLOPE_HANDLE. E Nokia Mobile Phones Ltd. Page 31 Issue 2 09/00...

  • Page 32: 800 Cdma Tuning Rx If Compensation

    CAFÉ ADC. The setting of RX_IF_AGC is then read from the phone at each of the five frequencies. Definition of Result The five different values of RX_IF_AGC are stored to EEPROM. E Nokia Mobile Phones Ltd. Page 32 Issue 2 09/00...

  • Page 33: 1900 Cdma Tuning Tx If Agc

    1, when this is done the process must be repeated for Points 2 and 3. Definition of Result The results of the 3 point tuning are the 16 slope and offset values, which are stored to eeprom RF_TUNE_PCS_TX_AGC_OFFSET_SLOPE_HAN- DLE. E Nokia Mobile Phones Ltd. Page 33 Issue 2 09/00...

  • Page 34: 1900 Cdma Tuning Lna Switch

    RF connector with amplitude of dBm and off- set 300KHz from the center of the receiver. The RX_IF_AGC adjusts to make the best use of the CAFÉ ADC. The setting of RX_IF_AGC is then E Nokia Mobile Phones Ltd. Page 34 Issue 2 09/00...
  • Page 35 LNA. Check the transistor V705 and it’s collector components L710. Also check the bias circuitry V704 and L708. NOTE: If any of these components are damaged and are replaced then the Rx IF AGC must be retuned. E Nokia Mobile Phones Ltd. Page 35 Issue 2 09/00...

  • Page 36: 1900 Cdma Tuning Rx If Agc

    Definition of Result The results of the 3 point tuning are the 16 slope and offset values which are stored to eeprom RF_TUNE_PCS_RX_AGC_OFF- SET_SLOPE_HANDLE. Manual Verification Use WinTesla as follows: E Nokia Mobile Phones Ltd. Page 36 Issue 2 09/00...

  • Page 37: 1900 Cdma Tuning Rx If Compensation

    RX_IF_AGC is then read from the phone at each of the six frequencies. Definition of Result The five different values of RX_IF_AGC are stored to EEPROM. Manual Verification Use WinTesla as follows: Trouble Shooting See section 1900 CDMA Tuning Rx IF AGC. E Nokia Mobile Phones Ltd. Page 37 Issue 2 09/00...

  • Page 38: Test Point Values

    N601 Pin 6 Penta P5 0v or 2.7 from Penta P5 to Control for PCS LNA from PCS LNA for LNA OFF or ON Penta N303 Pin 9 E Nokia Mobile Phones Ltd. Page 38 Issue 2 09/00...

Table of Contents