HP Jet Fusion 300 User Guide - Page 91

Random white lines, Agent mixing recoverable, Diagnostic A defect sample

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Table 14-2 Problems (continued) Problem descriptions Staggered lines in Diagnostic B or C, consistent across the page. See Staggered lines on page 87. Random white lines Table 14-3 Random white lines Problem description Lots of random missing nozzles, seen as white streaks in the area fill section of Diagnostic Page sections A or D Possible causes material blocking nozzles Recommended actions 1. Check Printhead Health Gauge Status from the UI. 2. Run Printhead recovery routine on page 88. 3. If plot is unchanged, the material is likely permanently stuck inside the nozzles. Printer has built in robustness to combat this defect and it should not affect part quality. 4. If 3D part quality is unaffected, then the printhead is OK and does not need to be changed. Diagnostic A defect sample: Agent mixing (recoverable) Table 14-4 Problems Problem description The color of the agent is wrong. Diagnostic A defect sample: Possible causes 1. Printhead crashing into material. 2. Particles on the die bridges 2 agent slots, allowing agent to transfer back and forth between slots. 3. Material buildup inside the cap touching the printhead. 4. Extended idle times. Recommended actions 1. Clean the cap thoroughly. 2. Run the Printhead recovery routine on page 88 to clear the agent mixing. 3. If the agent mixing returns repeatedly at the exact same location, then call HP support and describe repeated mixing. Random white lines 85

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Table 14-2
Problems (continued)
Problem descriptions
Staggered lines in Diagnostic B or C, consistent across the page. See
Staggered lines
on page
87
.
Random white lines
Table 14-3
Random white lines
Problem description
Possible causes
Recommended actions
Lots of random missing nozzles, seen as
white streaks in the area fill section of
Diagnostic Page sections A or D
material blocking nozzles
1.
Check Printhead Health Gauge Status
from the UI.
2.
Run
Printhead recovery routine
on
page
88
.
3.
If plot is unchanged, the material is
likely permanently stuck inside the
nozzles. Printer has built in robustness
to combat this defect and it should not
affect part quality.
4.
If 3D part quality is unaffected, then
the printhead is OK and does not need
to be changed.
Diagnostic A defect sample:
Agent mixing (recoverable)
Table 14-4
Problems
Problem description
Possible causes
Recommended actions
The color of the agent is wrong.
1.
Printhead crashing into material.
2.
Particles on the die bridges 2 agent
slots, allowing agent to transfer back
and forth between slots.
3.
Material buildup inside the cap
touching the printhead.
4.
Extended idle times.
1.
Clean the cap thoroughly.
2.
Run the
Printhead recovery routine
on
page
88
to clear the agent mixing.
3.
If the agent mixing returns repeatedly
at the exact same location, then call
HP support and describe repeated
mixing.
Diagnostic A defect sample:
Random white lines
85