Stratasys J850 Manual page 91

➢ If the replacement head was not calibrated by Stratasys, remove the head
and replace it with another one.
Contact your Stratasys service provider about the uncalibrated head.
The level of UV radiation from the lamps used for curing models can change
over time. To ensure optimum curing of models during printing, a pop-up
message reminds you to test the lamps and calibrate the level of UV radiation
after every 300 hours of printing. You do this by running the UV Calibration
Wizard.
To measure the UV radiation, you need:
• Stratasys TOL-03005-S (UV sensor and cable)
or—
• a stand-alone UV radiation meter, approved for use with the printer
The wizard compares the measured radiation to the recommended radiation
level for each of the lamps, at each printing mode—High Speed /
High Quality.
When calibrating the lamps, the wizard attempts to adjust the radiation level,
if necessary.
• If the reading is within the acceptable range, the wizard continues to the
next phase.
• If further adjustment is necessary, the current phase is repeated.
• If the level of UV radiation is too low to be properly adjusted, the wizard
continues to the next phase, but the final wizard screen indicates that the
lamp's radiation for the printing mode is unacceptable.
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