Article ID: MXB1002
Created: 20 Nov 2017
Reviewed: 10 Dec 2017
Information in this article applies to:
From time to time, the illuminator diffuser for the overview camera can become dirty or dusty and may require re-calibration or cleaning.
Dirt or dust can easily collect on the diffuser because it is a large, flat surface. Since it is translucent and white (to provide the best background for the slide overview image) any dirt or debris is clearly visible.
In cases where the debris on the diffuser is small, recalibrating the overview camera and creating a new flat-field image may be sufficient to eliminate most of the negative visual effects. Refer to the following knowledge base article for details on recalibrating the overview camera:
After recalibrating the overview camera, load a slide into the uScope and review the overview image to confirm that recalibration has improved the image.
In cases where recalibrating the overview camera is not sufficient, you may need to clean the overview diffuser.
There are a number of steps involved in cleaning the overview diffuser. To get started you must:
The following tools are required to clean the overview diffuser:
The overview diffuser is positioned in the uScope case underneath the slide tray. Follow these steps to remove the front panel and clean the overview diffuser.
Unload the uScope and remove the slide from the slide tray.
Load the empty slide tray back into the uScope. You should do that from the uScope Navigator application.
Shutdown the uScope Navigator software and disconnect the uScope USB cable from the computer.
Turn off power to the uScope and unplug the power cable.
Using the 3mm hex allen driver, remove the four stainless steel screws from the front cover of the uScope and carefully remove the unit's front panel.
Place the front panel face up or on a soft cloth to avoid marring the surface. The front panel is very rugged, but it can still be scratched or marred.
After removing the front panel, locate the slide tray and diffuser. Avoid pressing on the slide tray or attempting to move it left or right. It is fixed in place and cannot be moved by hand.
The front of the control board is exposed once the front panel is removed. Please take all necessary precautions to avoid ESD/static damage to the control board inside the uScope.
Using a cotton swab, wipe the surface of the white plastic diffuser located immediately below the slide tray.
After cleaning the overview diffuser, replace the front panel making sure to securely tighten the four stainless-steel screws.
Reconnect the uScope to your computer, reconnect the power cable, and turn the unit on. Then, relaunch the uScope Navigator software.
At this point, you must recalibrate the overview camera. Refer to Recalibrating the Overview Camera for more information.
After recalibration, the overview image should be back to normal.