SpectroDens Absolute White Calibration Error
When getting Absolute White Calibration error message on the SpectroDens, here are steps for troubleshooting before sending the unit back to TECHKON:
- Making sure each device uses its own base with white tile (matching serial number between the base and the device).
- Clean the white tile with Isopropyl alcohol and inspect if any duct or contamination in the device aperture. Q-tip and can-air (non-oil type) are safe to use to clean the device.
- Verify if Aperture setting is correct based on the actual aperture size installed on the device. The SpectroDens has two options for aperture: 3mm and 1.5mm. This must be set correctly in the device settings.
- Go to the Device Voltages under system settings (two-gear icon) on the SpectroDens and press Enter. If you lift up your device, you should see the device LED stays on with a circle illuminating the desk. If so, please Exit the Device Voltages and try the absolute white calibration again on the same base.
- Press and Hold the 3-key combination for 8 seconds to reboot the device. The key combination is Enter (arrow pointing left) + Exit (red radio button) + Measure (green button on the side). The device screen will turn off and back on after the reboot.
- Make a device hard reset. Go to Device System Settings (two-gear icon) and go down the list to find Reset option.
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