HP DESIGNJET 3D, Service Manual

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9. Carrier failed to load after
three tries.
1. Carrier is defective (e.g. material jammed in
carrier, worn drive wheel). Replace
2. Carrier is empty. Replace carrier.
3. Filament left in head or needs to be cleaned.
4. Load solenoid or motor not working. Check
connections to motor/solenoid.
5. Filament is being cut off too long at carrier.
Less than 1/4" should be exposed.
6. Filament guide tubes are kinked or bad.
Replace filament tubes.
7. Head filament motor not running. Verify that
motor runs though head maintenance.
8. Filament guides are out of alignment with
motor blocks. See “Liquefier Alignment” on
page 397.
10. "Load Failed" is displayed
shortly after hitting "Load"
1. Check that the Z stage is not hitting the lower
Z limit switch. Manually raise the Z stage
several inches above the lower Z limit switch.
2. Reload material.
11. Filament makes it to drive
wheel pinch point but
"Material Error" is
displayed.
1. Retry loading material
2. Perform the drive wheel alignment procedure
3. Idler wheel stuck on axle. Realign idler wheel.
If wheel remains stuck replace toggle.
4. Check that pivot block spring is mounted on
the pivot blocks, not the idler wheel shafts.
5. Check idler wheel stop adjustment.
6. Replace tips.
12. Filament makes it to drive
wheel pinch point but does
NOT purge.
1. Retry loading material
2. Perform the drive wheel alignment procedure
3. Idler wheel stuck on axle. Realign idler wheel.
If wheel remains stuck replace toggle.
4. Check that pivot block spring is mounted on
the pivot blocks, not the idler wheel shafts.
5. Check idler wheel stop adjustment.
6. Replace tips.