Can't print after removing MMU2  

  RSS
tracyjon
(@tracyjon)
New Member

So after about six months of tinkering and troubleshooting with no success, I decided to remove the MMU2 from my MK3S. I simply removed the unit and the corresponding cables from the RAMBo box and then flashed with the latest firmware. Now when I go to print the MK3S does its 9 point calibration and then looks like it will do the brim to prime the nozzle along the front edge but then it lifts up, moves to the bottom right corner and beeps at me with a message to remove the filament. It does not matter if I am printing via USB or SD card and the file does not change the outcome. I am desperate to print some PPE facemasks but this has me dead in the water.

Posted : 27/03/2020 8:59 pm
karl-herbert
(@karl-herbert)
Famed Member
Posted by: @tracy-jon-s2

So after about six months of tinkering and troubleshooting with no success, I decided to remove the MMU2 from my MK3S. I simply removed the unit and the corresponding cables from the RAMBo box and then flashed with the latest firmware. Now when I go to print the MK3S does its 9 point calibration and then looks like it will do the brim to prime the nozzle along the front edge but then it lifts up, moves to the bottom right corner and beeps at me with a message to remove the filament. It does not matter if I am printing via USB or SD card and the file does not change the outcome. I am desperate to print some PPE facemasks but this has me dead in the water.

Did you use this firmware to flash the MK3S?

https://cdn.prusa3d.com/downloads/firmware/prusa3d_fw_3_8_1_MK3S.zip

Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen....
Posted : 27/03/2020 10:19 pm
Fabi
 fabi
(@fabi)
Eminent Member

Check your filament sensor and readjust it.

Or if you're desperate, just disable the filament sensor in the config menu.

Posted : 27/03/2020 10:25 pm
tracyjon
(@tracyjon)
New Member

@karl-herbert

Yes, that is the firmware that I used.

Posted : 27/03/2020 10:54 pm
karl-herbert
(@karl-herbert)
Famed Member

@tracy-jon-s2

Do a complete factory reset and flash the firmware again. You will then need to recalibrate the printer.

Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen....
Posted : 27/03/2020 11:06 pm
Share:

Please Login or Register