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Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement

Introduction

Replacement of the USB daughterboard on any Kaffelogic Nano or Nucleus Link coffee roaster with a C or N prefix serial number.

What you need

  1. Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Removing Panel Screws: step 1, image 1 of 2 Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Removing Panel Screws: step 1, image 2 of 2

    • Remove the 6x 2.5mm Hex screws on the left and right side of the roaster.

    Edit

  2. Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Lift the closure: step 2, image 1 of 2 Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Lift the closure: step 2, image 2 of 2

    • Hold the roaster steady while removing the plastic top/closure.

    • Panels may spring apart slightly once removed.

    Edit

  3. Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Remove bottom panel screws: step 3, image 1 of 3 Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Remove bottom panel screws: step 3, image 2 of 3 Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Remove bottom panel screws: step 3, image 3 of 3

    • Remove the 4x 2.5mm Hex screws on the bottom of the roaster.

    Edit

  4. Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Remove the front panel: step 4, image 1 of 3 Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Remove the front panel: step 4, image 2 of 3 Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Remove the front panel: step 4, image 3 of 3

    • Pull away the front panel carefully.

    • Take care not to damage the buttons while maneuvering the front panel.

    Edit

  5. Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Remove rear panel: step 5, image 1 of 3 Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Remove rear panel: step 5, image 2 of 3 Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Remove rear panel: step 5, image 3 of 3

    • Stand the roaster up again and pull away the rear panel from the chassis to expose the remaining components.

    • The mains cable is routed through the panel and it will remain attached, place the panel in a soft bag if you wish to protect the paint throughout the rest of your repairs.

    Edit

  7. Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Disconnect the SSR signal: step 6, image 1 of 2 Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Disconnect the SSR signal: step 6, image 2 of 2

    • Pull upwards on the SSR signal connector to remove it.

    Edit

  8. Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Disconnect the motor: step 7, image 1 of 1

    • Unplug your motor if your roaster is fitted with a connector, otherwise leave the connections in place.

    Edit

  9. Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Disconnect the ribbon cable: step 8, image 1 of 1

    • Carefully pull on the ribbon cable to remove it.

    Edit

  10. Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Remove PCB screws: step 9, image 1 of 1

    • Remove the 4x PH2 PCB screws.

    Edit

  11. Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Pull the board: step 10, image 1 of 1

    • Pull the board away from the chassis carefully, taking care with any wires still attached. We need to get to the back of the board.

    Edit

  12. Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Remove shroud screws: step 11, image 1 of 2 Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Remove shroud screws: step 11, image 2 of 2

    • Remove the 2x 1.5mm hex screws securing the plastic USB shroud.

    Edit

  13. Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Remove shroud: step 12, image 1 of 1

    • Slide the plastic shroud away from the PCB

    Edit

  14. Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Remove the daughterboard: step 13, image 1 of 2 Kaffelogic Nano 7/LINK (C-N Serial) USB Daughterboard Replacement, Remove the daughterboard: step 13, image 2 of 2

    • Pull away on the daughterboard to remove it from the main PCB.

    Edit
Conclusion

To reassemble your device, follow these instructions in reverse order.

Author

with 1 other contributor

Kaffelogic

Member since: 07/23/25

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Team

Kaffelogic Staff Member of Kaffelogic Staff

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