Use the correct power cable for your printer type!
⬢Signal cable (1x)
Note the signal cable has two different connectors! One is smooth without safety latch and the other one has a latch. Use the latch for the MMU2S board.
⬢Prepare the MMU2S unit and the electronics assembly like in the picture. Position the side with two motors to the left and signal cable to the left as well.
⬢Place the electronics on the MMU2S unit. The connectors must be facing towards you.
⬢Secure the electronics assembly with two M3x18 screws.
Make sure the selector with SuperFINDA is all the way to the side as in the picture!
⬢We will do the cable management starting from the SuperFINDA sensor and proceed counter-clockwise. Note the arrows.
Tighten the cables firmly, but gently at the same time. You can damage (break) the wires.
⬢Carefully guide the cable from the SuperFINDA sensor and couple it with the cable from the Selector motor. Use the first zip tie.
⬢Continue with the cable bundle and add the Pulley motor cable. Tighten these three cables using a second zip tie near the edge of the printed part (idler-body).
⬢Place the rear-PTFE-holder on the top of the PTFE tubes. Notice the printed part has thicker side, which must be facing out.
⬢Secure the rear-PTFE holder using four M3x18 screws. Tighten the screws fully only after you ensure proper alignment of the printed part! Otherwise, you risk squishing the tubes and future filament jams.
While the MMU2S unit is turned upside down, be EXTRA careful with the SuperFINDA cable, which can get broken, if you tilt the unit on the SuperFINDA sensor.
⬢Turn the MMU2S unit upside down like in the first picture. Locate the four holes for the M3 screws. Make sure there are nuts in them.
⬢Place both frame-holder parts on the MMU2S unit. The longest inclined part should be in the direction of the PTFE tubes.
⬢Ensure once again the correct orientation of the frame holders.
The MMU2S unit should be placed in the middle on the top part of the aluminium frame (next to the Prusa logo).
⬢Place the unit on the frame, do not try to fix it for now.
⬢Look from behind the printer, there are "clamps" on the MMU2S unit, which must be snapped (locked) to the frame. Don't do it now, wait for the next step!
⬢Make sure once more the unit is in the middle of the frame, once we engage the clamps, you won't be able to move it!
⬢Using both hands, apply equal pressure along the top part of the MMU2S unit. Press downwards and slightly towards the frame. Press until the clamps lock to the frame.
⬢Check on the front side of the frame, both clamps of the holder are fully engaged.
Connecting MMU2S unit to the printer differs depending on the printer you have. For the MK3S/+, please use this step. For the MK2.5S please skip to the next.
⬢MMU2S Signal cable (upper row of the pins, brown wire in the connector facing left)
Make sure the signal cable is properly connected to all pins!
⬢Power cable (add it to the first two clamps from the left, leave the PSU cables connected). Red wire is positive and in the first slot, black wire is negative and in the second.
⬢The power cable connector "fork" has bended ends, make sure they point up, see the picture.
Make sure the power cables are tightened firmly!
Use the Philips screw-driver to release the screws on the EINSY Rambo board.
If you have a question about something that isn't covered here, check out our additional resources. And if that doesn't do the trick, you can send an inquiry to [email protected] or through the button below.
