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2A. Preparing the printer (MK4/S & MK3.9/S)

2A. Preparing the printer (MK4/S & MK3.9/S)

2A. Preparing the printer (MK4/S & MK3.9/S)
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Last updated 3 months ago
2A. Preparing the printer (MK4/S & MK3.9/S)
 Difficulty
Very easy
 Steps
18
 Available languages
PLDEITFR
Important information
Important information
This manual is fully compatible with the MK4/S printer. The pictures are of the MK4, but the assembly is the same.
Tools necessary for this chapter
Tools necessary for this chapter
Tools necessary for this chapter
Tools necessary for this chapter
For the following steps, please prepare:
2.5mm Allen key
T10 Torx key
Needle-nose pliers for cutting zip ties
Piece of cloth or fabric (at least 15x15 cm)  for covering the heatbed
Preparing the printer
Preparing the printer
Preparing the printer
Preparing the printer
Before we start with partial disassembling of the printer, proceed with the following steps:
Unload the filament from the extruder.
Turn the printer off and unplug the power cable.
Remove the steel sheet from the heatbed.
Remove the USB flash disk.
Take off the filament spool from the spool holder and remove the spool holder from the printer.
Carefully place the printer on its left side (the side with the electronics box - the xBuddy box).
Releasing the PSU cables
Releasing the PSU cables
Releasing the PSU cables
Releasing the PSU cables
WARNING: Avoid cutting the cables!
From both cable clips on the PSU side, remove all the cables guiding from the PSU.
Carefully cut the zip ties securing the cable bundle to the frame.
Carefully cut the zip tie attaching the PSU cable to the cable clip on the second short extrusion profile.
Releasing the PSU
Releasing the PSU
Releasing the PSU
Releasing the PSU
Place the printer back on its feet.
Release two screws holding the PSU-cover and remove the cover from the PSU.
Loosen two screws holding the PSU on the aluminum extrusion. Do not remove them completely! Keep them in place.
Release two round head screws from the front side of the frame securing the PSU.
If one of the screws is hidden behind the X-end, manually rotate both threaded rods at the same time to move the X-axis up or down.
Removing the PSU
Removing the PSU
Removing the PSU
Removing the PSU
Slightly lift the PSU until it can be completely released from the printer.
Remove the PSU from the printer and place it behind the back of the printer on the piece of cloth, like in the picture.
You will need to slightly lift the printer to guide the cables out of the frame.
Carefully turn the printer on the "electronics" side.
Avoid putting the printer on the LCD cables!
Guiding the cables
Guiding the cables
Guiding the cables
In the upcoming steps, please tighten all zip ties carefully, as you might pinch/break the cables.
Locate the circular holes in the frame near the Z-axis right motor.
Slide the zip tie through the circular holes in the frame to create a loop.
Guide the motor cable in the zip tie and tighten it. Be careful not to over tighten the tie as it can cut the wires. Cut the remaining part.
Guiding the cables
Guiding the cables
Guiding the cables
Continue downwards and  insert Y-axis motor cable to the current bundle.
Secure the cables to the printer frame with another zip tie. Do not overtighten the zip tie!
Guide the xLCD cable and PE cable together with the motor cables.
Secure the cable management to the printer frame with the zip tie. Do not overtighten the zip tie!
Mounting the printer frame support
Mounting the printer frame support
Mounting the printer frame support
Mounting the printer frame support
Slide the printer frame support on the screws in the aluminum extrusions (instead of the PSU).
Move the printer frame support to the frame.
Secure the printer frame support to the frame with two M4x10r screws.
Covering the PSU cables
Covering the PSU cables
Covering the PSU cables
Covering the PSU cables
From the electronics, wrap the PSU cable (including the black&white power panic cable and the green&yellow PE cable) in the textile sleeve.
Leave 2-5 cm from the electronics uncovered. Secure the end of the sleeve with the zip tie.
Wrap the entire length of the bundle and slightly twist the sleeve, not the cables.
Secure the end of the sleeve with the zip tie.
Fitting: parts preparation
Fitting: parts preparation
For the following steps, please prepare:
Fitting QSM-M5 (1x)
Starting from September 2024, you may receive a new black Fitting M5-4. The assembly and functionality remain identical to the blue one.
If you plan to use an MMU3, please skip these steps.
Haribo time!
Haribo time!
That was easy, wasn't it? Reward yourself and replenish your energy for the next chapter.
Eat the second row of the gummy bears. Leave the others!
The printer is prepared
The printer is prepared
The printer is prepared
Carefully place the PSU on the heatbed. Use a piece of cloth as protection.
Well done, the printer is prepared.
Place the printer aside for some time, we will need it later on.
Now, let's go to the next chapter: 3. Assembling the enclosure
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