2.2 - Remove the upper assembly - CTS v2
Turn the rotating assembly in order to provide clear access to the small retaining bolts.
Using a 3mm hex key (do not use ball ended drivers), loosen and unscrew the four small retaining bolts. The bolts are secured with Loctite and will be resistant to movement.
The bolts are captive but when they are all properly released, carefully lift off the upper assembly from the turntable.
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Care point - Inspect the plastic lens or metal dish on the rotating assembly for dirt and debris. Clean any debris away using a soft dry brush.