Operation Manual

64 Troubleshooting
Dimension BST 768 / SST 768 User Guide
Figure 22: Removing the drive block assemblies to check for buildup
C. Set the drive block assembly on the material cartridge.
D. Remove the model drive block assembly the same way.
7. With the drive blocks removed, look through both filament
guide funnels for obstructions. If an obstruction is present,
clear the drive block obstruction:
A. Remove the filament guide funnel.
Use the 7/64” Allen wrench provided in the Startup Kit to
remove the filament-guide mounting screw as shown in
Figure 22.
B. Remove any excess material; use the needle-nose pliers if
necessary.
C. Replace the filament guide funnel.
8. With the drive blocks removed, inspect liquefier tube inlet area.
A. (For BST) Inspect the liquefier inlet tubes (see Figure 23).
CAUTION
Liquefier inlet tubes are fragile. Be
careful not to damage them when
removing material.
Drive Block Assembly
Mounting Screws
Drive Wheels
Filament Guide Funnel
and Mounting Screw
Support DriveModel Drive