Repairing Microtek ScanMaker 5900 Dirty Bulb

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.

After opening the chassis, you will see a white bulb spanning the width of the scanner.

Lift up the black piece of plastic the bulb is attached to from the left hand side until it is perpendicular with the bottom lid of the scanner.

Use tweezers to grab the plastic casing the wires are housed in.

Gently jiggle the plastic back and forth until it can be pulled from its connection.

Pull the wires out of the circuit board.

Pull the wires up and out over the top of the plastic housing.

Place the plastic housing back into the bottom lid of the scanner.

Remove the plastic panel by gently pushing on the plastic latches with a plastic opening tool.

Pull the bulb and wire out of its plastic casing.

The bulb is now free to be replaced.

After opening the chassis and removing the bulb, simply take a cloth and wipe down the bulb.