How to replace a Dwarf board (XL single-tool)

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Last updated a year ago

Difficulty

Moderate

Steps

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Step 1 Introduction

⬢This guide will take your through the replacement of a Dwarf board on the single-tool version of the Original Prusa XL.

⬢All necessary parts are available in our eshop prusa3d.com.

Note that you have to be logged in to have access to the spare parts section.

Step 2 Necessary tools

⬢For the following guide, please prepare:

⬢TX 8 Torx key

⬢Allen key 2.5mm

⬢Needle-nose pliers

⬢A cardboard box to use as a heatbed protection during the procedure. Hint: use the Prusament box.

Step 3 Unloading filament

The following step is necessary only if you have filament loaded.

⬢Unload the filament from the hotend. On the screen, navigate to Filament -> Unload Filament.

⬢Cool down the printer to room temperature. On the screen, navigate to Preheat -> Cooldown.

Wait for the printer to fully cool down to room temperature before proceeding further.

Step 4 Protecting the heatbed

⬢Before you proceed, it is recommended to protect the heatbed.

⬢Make sure the heatbed is cooled down to ambient temperature. Place the empty cardboard box approximately to the front center part of the heatbed.

Step 5 Removing covers

⬢Using the 2.5mm Allen key, loosen the M3x12 screw to open the dwarf-cover-door.

⬢Using the TX 8 key, remove the M3x8bT and open the dwarf-cover-back.

Step 6 Disconnecting cables

Each connector has a safety latch. It is necessary to press the latch before disconnecting. Otherwise, the connector may get damaged.

⬢Disconnect the main cable.

⬢Carefully slide up the dwarf-cover-base.

⬢Disconnect all the remaining connectors from the Dwarf board.

Step 7 Removing the Dwarf board

Avoid scratching the board with the divots and with the needle-nose pliers.

⬢Using needle-nose pliers, rotate the divots so that they are positioned vertically, and aligned with the holes.

⬢Carefully slide the Dwarf board out.

Step 8 Assembling the new Dwarf board

Avoid scratching the board with the divots and with the needle-nose pliers.

⬢Carefully insert the Dwarf board through the divots.

⬢Twist the divots using needle-nose pliers.

Step 9 Connecting cables

⬢Connect the E-axis motor

The main cable will be connected at a later step.

⬢The right-side area connectors have indications

⬢Connect the following cables on the first column from the left, starting from the uppermost connector:

⬢HEAT TH: heatbreak thermsitor

⬢FS: filament sensor

⬢FAN1: print fan

⬢Loadcell

Step 10 Connecting cables

⬢Connect the hotend heater cable.

⬢Connect the following cables on the rightmost column, starting from the uppermost connector:

⬢HE TH: hotend thermistor

⬢FAN0: heatsink fan

CHEESE: cheese board, not used on single-tool XL.

⬢Double-check that all cables are connected and in the correct position, apart from the main cable.

Step 11 Connecting the main cable

⬢Carefully slide the dwarf-cover-base onto the Dwarf board.

Avoid scratching or damaging the Dwarf board.

⬢Connect the main cable from the top.

⬢Double-check that all cables are connected and in the correct position.

Step 12 Re-assembling covers

⬢Using the TX 8 key, tighten the M3x8bT to attach the dwarf-cover-back.

⬢Tighten the M3x12 screw and close the dwarf-cover-door.

Avoid pinching any cables.

⬢Remove the cardboard box from the heatbed.

Step 13 Final check

⬢To check if everything is connected correctly, navigate to LCD Menu -> Control -> Calibrations & Tests. From that menu, test the following:

⬢Fan Test

⬢Loadcell Test

⬢Nozzle Heaters Test

Step 14 It's done

⬢That's it! You successfully replaced the Dwarf board on your single-tool Original Prusa XL.

How to replace a Dwarf board (XL single-tool)

How to replace a Dwarf board (XL single-tool)

Step 1 Introduction

Step 2 Necessary tools

Step 3 Unloading filament

Step 4 Protecting the heatbed

Step 5 Removing covers

Step 6 Disconnecting cables

Step 7 Removing the Dwarf board

Step 8 Assembling the new Dwarf board

Step 9 Connecting cables

Step 10 Connecting cables

Step 11 Connecting the main cable

Step 12 Re-assembling covers

Step 13 Final check

Step 14 It's done

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