Repair workspace

MMU Load or Unload Failure

Free visitors can keep progress on this device. Members can move proven settings and notes into Profile Vault for account-level history.

Choose another guide Open Profile Vault

Fast answer

Start here

Align the selector and filament tips, reduce path friction, calibrate sensor positions, clean drive gears, and verify reliable single-filament loading before multicolour printing.

Multi-MaterialIntermediate15 min

Progress

0 of 8 complete

Progress is stored only in this browser unless you deliberately save a member profile.

Ordered repair sequence

Step 1

Unload and inspect the filament tip shape.

Step 2

Clean and align selector, idler, gears, and channel entrances.

Step 3

Check every PTFE tube is fully seated and free of sharp bends.

Step 4

Calibrate filament sensors using the official workflow.

Step 5

Verify spool and buffer movement with minimal resistance.

Step 6

Tune unload temperature or cooling only after mechanics are correct.

Step 7

Test load and unload repeatedly with one channel.

Step 8

Add channels one at a time and confirm reliable transitions.

Private notes on this device

Save proven profile as a member Escalate to AI Doctor