Remove four screws using a Philips #1 screwdriver as shown.
Carefully remove metal plates as shown in second photograph
Step 7
Starting with the three screws located under the fan assembly, unscrew a total of twelve screws on the outer edge of the unit using a Phillips #2 screwdriver.
Finish removing the top half of the drive assembly, be careful as this piece is where the two wires that should not be removed are attached to (unless you want to do some soldering).
Step 17
Remove three final screws near the bars of the lens assembly. Once this is done the lens assembly can be removed.