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MARTECH RCD PRO 6.5.3 Algorithm for reading code from car / navi RNS315

Initial options : unit must have 3 code tries left

Functional diagram:

  • 1.

    Remove the radio metal shields and CD drive

  • 2.

    Desolder EEPROM 95256 from mainboard

  • 3.

    With SPI_Tool Clip Portable Application version 1.2 make backup and set full memory protect – function “Protect EEPROM Area”. Note, that SPI Tools work without Expander module!

  • 4.

    Use “Read Status Register” for sure, that EEPROM has protected whole memory area.

  • 5.

    Solder protected EEPROM on board with crossed WP signal (3pin of Eeprom) to GND (4pin of EEPROM)

  • 6.

    Connect the Expander signals from the radio plate according to the diagram to the radio / navigation

  • 7.

    Assemble the radio in a way that ensures the proper functioning of the device. Turn it on, previously connect 12V power supply to the radio.

User manual

44

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