2.2 - Remove the upper assembly
Turn the rotating dish assembly in order to provide clear access to the small retaining bolts.
Using a 3mm hex key (do not use ball ended drivers), loosen the four small retaining bolts and remove the fifth locking bolt. The bolts are secured with Loctite and will be resistant to movement.
When all bolts have been loosened off and the locking bolt completely released, rotate and carefully lift off the upper assembly from the turntable.
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Care point - Inspect the metal dish or plastic lens on the rotating assembly for dirt and debris. Clean any debris away using a soft dry brush.