
Stratasys J750/J735/J720 User Guide
4 Operating and Maintaining the Printer
DOC-08040 Rev. R
4-66
The printer heats and empties the print block, and prepares the printer. (This
should take up to 15 minutes.)
The following screen appears when the printer is ready for you to replace
print heads.
Figure 4-89 Printer ready for head replacement
8. Put on the protective gloves and open the printer cover.
Note:
The printer disconnects power to the heads for your safety.
Removing the Defective Head
9. On the front of the print block, loosen the screws that secure the cover
protecting the print-head driver cards.
Figure 4-90 Loosening the driver-card cover screws
10. Lift up the cover.