[Arco] Chroma Kit Trouble Shooting

While using the multi-color printing module (Chroma Kit), you may encounter various issues. Each situation typically corresponds to different causes and solutions. Below is a breakdown of common problems and recommended self-check procedures.

1. Feeding Timeout

Possible Causes:

• Spool Jammed: Deformed edges prevent rotation, or the spool is too wide and falls into the roller gap. 
  
• Filament Wear: Excessive resistance causes repeated grinding, thinning the filament and preventing successful feeding. 
  
• Filament Obstruction: PTFE tube, Chroma Kit outlet, or the 4-way splitter may block filament movement.

Solutions:

• Replace the filament, realign the spool, and check for tangling.
• Check if the buffer unit at the Chroma Kit outlet is functioning properly. 
  
• Inspect if the cutter has fallen off and is blocking the feed path.
• Manually retract the filament, trim worn sections, and clean debris from the gear at the Chroma Kit inlet.

2. Retraction Timeout

Possible Causes:

• Filament Not Cut: Cutter is worn or deformed and cannot cut the filament. 
  
• Spool Jammed: Deformed edges or misalignment cause retraction issues.
• Filament Breakage: Filament breaks during retraction and remains in the PTFE tube or extruder, triggering sensor errors. 
  
• Special Filament: Rough surface or high resistance prevents smooth retraction.

Solutions:

• Check the cutter condition and replace if necessary.
• Replace the filament, realign the spool, and confirm if the spool is empty.
• Manually push a full filament through the Chroma Kit inlet to check for broken pieces and extrude them.

3. Filament Cannot Be Extruded

Solutions:

• Ensure the firmware is up to date.
• Check the channel indicator color for correct status. 
  
• Identify the current position of the filament end.
• Use the front viewing window to confirm the filament has entered the extruder feed path.
• Remove the front cover of the extruder to clear any remaining filament.