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6 TROUBLESHOOTING
GENERAL
Many printer issues can be resolved by pressing Resume in Mojo Control Panel or by cycling power.
CYCLING POWER
1. Turn the printer power switch to the OFF position.
2. The printer will shut off and the LED display will go blank.
3. Wait 20 seconds and turn the power switch to the ON position.
4. The display LEDs will blink in sequence during startup and when complete the display will turn
green indicating that the printer is in idle mode.
CLEANING HEAD TIPS
Occasionally excess material may build up on the head tips. Remove the excess material by gently scraping the
head tips using a small flat bladed screwdriver. Use care not to damage the head tips.
LOSS OF EXTRUSION
Occasionally, the head may experience a loss of extrusion. This will be evident by observing one of the
following:
• The head is moving with no material coming out of either tip.
• The height of the model and support materials are not equal.
• Structures are sagging due to lack of material.
If loss of extrusion continues to occur, replace the QuickPack Print Engine.
EXTRUSION VERIFICATION
Maintenance purge is a way to verify that a QuickPack is extruding correctly. See “Maintenance purge” on page
33.
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