Stratasys J750 User Manual page 50

Stratasys J750 User Guide
UV Lamp A heat-sensitive label is fixed to the UV lamp covers as a warning against
Check overheating. Its center changes from white to black if the temperature of the
cover reaches 65°C (150°F). If this occurs, do not use the printer, and call
your service provider. As a precaution, it is recommended that you check the
label before and after printing.
Figure 4-31 Heat-sensitive label on UV lamp cover
If the UV lamp continues to overheat, and the temperature around the lamp
reaches 90°C (194°F), a heat fuse turns off the electricity to the power to the
UV lamp and the motors for the X, Y, and Z axes. In the unlikely event that this
occurs, the printer cannot be used until it is serviced by an authorized service
engineer.
Pattern Test The pattern test is the basic verification of the printer's ability to produce
quality models, since it demonstrates the condition of the nozzles in the print
heads. Make sure, therefore, that you perform this test weekly, and whenever
you suspect a printing problem.
To perform the pattern test:
1. Make sure that the build tray is empty.
2. Prepare a sheet of pink paper, A-4 or Letter size.
3. In the printer, tape the pink paper to the surface left of the build tray.
4. Press F3, or open the Options menu and select Pattern Test.
DOC-08040 Rev. E
4 Operating and Maintaining the Stratasys J750 3D Printer
4-29