4. Upgrading the Nextruder
64 Original Prusa MK4/MK3.9 to MK4S/MK3.9S upgrade
STEP 43 Connecting the extruder cables
Connect the Extruder motor cable to the connector on the top side of the
LoveBoard.
Connect the Loadcell cable coming from the right of the heatsink to the upper slot
on the right side of the LoveBoard.
Connect the filament sensor cable to the lower slot on the right side of the
LoveBoard.
STEP 44 LoveBoard: Wiring check
Before covering the electronics, check the connection of all cables. Click on high-
resolution preview in the top left corner.
Close the idler mechanism before proceeding to the next step if you haven't
already done so. Use the following sequence:
Close the extruder idler to the extruder
Close the idler-swivel and lock it over the extruder idler assembly
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