For MK2.5 there is a redesigned RAMBo cover case and door. In the following steps we will remove the older parts completely. Proceed with caution, as you might break the cables.
MAKE SURE you won't mix old and new parts!!! Their design is sometimes similar.
⬢Using 2.5mm Allen key, remove the M3x10 screw together with the upper hinge.
⬢Remove to the RAMBO cover door.
⬢Using 2.5mm Allen key, remove the M3x10 screw together with the lower hinge.
⬢In order to match the wrapping style of the printer, an extra textile sleeve is included for the X-axis motor cable. You can remove the spiral wrap and replace it with the textile sleeve, or leave the wrap in place. It is up to you, this step is optional ;)
⬢For the following step, please prepare:
⬢Textile sleeve 6 x 300 mm (1x)
⬢Zip tie (1x)
⬢Wrap the sleeve around the X-axis motor and endstop cable. The sleeve is shorter, than both cables.
⬢Secure the sleeve using a zip tie, you have to tighten the zip tie firmly and it is only a temporary fix until the Einsy case is assembled, but you can leave the zip tie in place afterwards.
Note the rest of this chapter was photographed with the spiral wrap, but the assembly procedures are the same for the textile sleeve.
⬢Cable bundles are held in place by cable clips, which HAVE DIFFERENT SIZES of the inner cutout. Please ensure you are using the CORRECT CLIP for each cable bundle!
⬢RAMBo-heatbed-cable-clip is used for a smaller cable bundle, therefore its opening is smaller.
⬢RAMBo-extruder-cable-clip is used for a bigger (thicker) cable bundle, therefore its opening is bigger.
⬢Original Prusa i3 MK2.5 upgrade brings several improvements from the MK3, however, there are not enough pins on the on RAMBo 13a(10a) board's connectors. Using v-cables we will split one cable into two connectors.
⬢Take v-cable for the PINDA V2 probe and connect it to the PINDA probe cable from the Extruder.
⬢Take v-cable for the Left hotend fan and connect it to the Left hotend fan cable from the Extruder.
Quick check: PINDA probe is using 4 wires, therefore, you need to connect v-cable with 3+1 wires.
⬢Press the cable bundle from the Extruder in the hole on RAMBo-cover-base. Make sure the spiral wrap is partly in.
⬢The nylon filament stays as a part of the bundle. No need to separate it as on the older versions of the RAMBo cover.
⬢Connect the cables from the extruder to the RAMBo board:
⬢P.I.N.D.A. probe (v-cable, 4 wires)
⬢Left hotend fan (v-cable, 3 wires)
⬢Extruder motor (yellow label with "E")
⬢Extruder heater
⬢Extruder thermistor (yellow/green heat shrink, orientation does not matter)
⬢Front print fan (red heat shrink, ensure that the red wire is closer to the extruder thermistor connector)
⬢Filament sensor cable (use the correct row of pins in the connector and ensure the red and blue wires are facing the outside of the board) In the third picture, the RAMBo board is facing with the USB port towards you.
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.