How to clean Microtek ScanMaker 5900 glass

Loosen the screws on the serial port by turning them counter clockwise by hand.

After loosening the screws, pull the serial port out.

Lift lid to its vertical position.

Pull lid straight up to remove it from the scanner.

Push the plastic opening tools into the crack between the top and the bottom of the chassis.

After placing one plastic opening tool into the slit, slide other plastic opening tools along the slit to detach the top from the bottom of the chassis.

Go all the way along the chassis until you can lift the upper lid.

Do this by grabbing the upper lid from the sides and rotating it ninety degrees so it is perpendicular to the bottom lid.

Grab the ribbon cable and gently pull it out of its slot with your fingers.

The upper lid can now safely be removed from the bottom lid.

Using a soft lint-free cloth clean the surface glass of dust, finger prints and other debris.