Stratasys J850 Manual page 67

4. When the following screen appears, place the transparency on the build
tray—next to the left and rear edges of the tray (see below).
5. Make sure that the transparency sheet is lying flat, and tape it to the tray.
6. Close the printer.
7. In the wizard screen, select the check box to confirm that the
transparency sheet is on the build tray, and click
8. If the printer is currently loaded with seven materials, (High Mix /
High Quality mode), select the mode for aligning the print heads.
.