Repairing A Popped Filament Feed Tube; Printer Won't Home X/Y/Z - ORD RoVa3D User Manual

User Manual
c. Unscrew and remove the nozzle from the hotend
d. Cut a 12" piece of filament
e. Insert the filament into the top of the hotend barrel
f. Push firmly until the blockage is dislodged
2. Clear the Jam using a drill bit
a. Using a micro drill bit sized for the nozzle orifice you are attempting to clear, gently insert the
drill bit into the nozzle orifice perfectly straight (or you may break the drill bit)
b. Gently twist the drill bit clockwise and counter clockwise to dislodge the debrit
c. Gently pull the drill bit out
3. Replace the nozzle (See the Change Nozzles section).
Warning: If you break the drill bit in the nozzle you will need to replace the nozzle!

5.6. Repairing a popped filament feed tube

If you experience a jammed hotend, the pressure build up in the filament feed tube may cause the tube to pop
off one of the quick releases. If this happens you must perform maintenance on the printer otherwise it will
happen repeatedly and possibly make it impossible for you to continue printing with the affected extruder. To
repair the problem, follow these steps:
1. Release the filament feed tube from the other quick fitting
2. Check the quick fitting that the tube popped out of to ensure that the teeth are intact. If the teeth are
bent upwards (like an inside out umbrella) then replace the quick fitting
3. Using a cutting board and a straight edge razor blade, cut the frayed end off the tube on both ends.
Try to keep the cut straight up and down like a guillotine
4. Replace the feed tube

5.7. Printer won't home X/Y/Z

If your printer won't home in the X or Y or Z direction then you may have a bad optical stop. This can happened
during shipping or if an incorrectly aligned optical stop tab strikes the optical sensor during a previous homing
attempt. To determine if you have a bad sensor and how to fix it please follow these steps:
1. Push the X carriage into the middle of the bed
2. Push the print bed into the middle of the Y axis
3. Lower the Y assembly so that the Z opto tab is below the Z opto sensor
4. Press the 'Optos' button
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