HP Designjet 3D Service Manual page 126

1. Filament Tail Left at Liquefier
Inlet
- Broken Filament
- Undetected EOF
1. Verify that filament tube is connected at all
junctions.
2. High pull force on the material spool.
a. Verify spool lid is inserted properly and
not rubbing on carrier.
b. Remove any debris from bottom of
carrier.
c. Filament is tangled on spool. Replace
spool.
3. High pull force in filament tubes.
a. Inspect filament tubes and Y block for
debris. Remove debris.
b. Inspect for kinked filament tubes.
Replace filament tubes.
c. Check for twisted feed tubes in energy
chain. If twisted, replace filament
tubes.
4. System did not detect end of filament (EOF).
Cycle power. If repeats, verify FP switch
functions properly. Replace material bay if
defective.
-110