Stratasys J850 User Manual page 161

Stratasys J850/J835 User Guide
Test Name
Head Voltages
Head/Block Heaters
System Voltages
UV Lamps
Axes Limits
Block Filling
Encoder Steps Count Tests the encoder's reliability by
Vacuum Test
Interlock
Version Tests
DOC-18001 Rev. H
Description
Checks the control of voltages
supplied to the print heads.
Tests the heaters in the print heads
and in the print-block body.
Checks if the following voltages are
within 5% of the required voltage:
• 40V to the print heads by the
VPP power supply
• 12V to the height thermistors by
the VDD power supply
Tests each UV lamp at the High
Quality power level.
Tests the hardware and software
limits of all axes.
Analyzes the thermistor readings
when the block is full and when it is
empty.
comparing readings from multiple
runs along the X-axis.
Tests the vacuum level in the print
block.
Tests the interlock in the printer
cover.
Checks the compatibility between
the software and component
firmware versions.
4 Operating and Maintaining the Printer
Possible Reason for Failure
Faulty print-head driver card(s).
Faulty heaters or thermistors.
• VPP power supply:
Faulty head driver.
• VDD power supply:
Faulty height thermistor.
• Faulty UV lamp.
• Faulty UV power supply.
• Disconnected UV cable.
Faulty hardware sensors.
Wrong Max Position parameter.
Faulty thermistor.
Misaligned or faulty encoder.
• Faulty vacuum sensor.
• Vacuum leakage.
• Wrong parameters.
• Failure of interlock mechanism.
• Faulty latch.
• Disconnected cable.
4-133