Brown Streaks (Burn Marks) - HP Designjet 3D Service Manual

Brown streaks (burn marks)

Characteristics: Brown streaks in parts.
Corrective actions:
1. Part geometry's are such that the model tip sits idle for an extended
period of time. Change the part orientation.
2. Worn tip shrouds, replace tip shrouds.
3. Material build-up behind the tips, remove excess material.
4. Check brush and flicker for damage or wear. Replace brush and flicker
if needed
5. Check and adjust the brush and flicker height.
6. Tip(s) are loose, check if tip screws are loose. Tighten tip screws.
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