Introduction
Replacing the Focus Knob and adding a small amount of WD-40 are a few easy solutions for a Focus Knob that is jammed in place or ineffective.
Tools
Parts
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            Hold Clock so the screen is facing away from you. 
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            Using your thumbs, push up on battery cover to remove. 
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            With your other hand, pull down on the A/C Adapter jack to remove. 
 
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            Remove batteries by pushing a battery toward the spring. 
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            Lift battery out at an angle. Repeat with second battery. 
 
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            Use a Phillips #00 Screwdriver to remove the four (4) screws from the back of the projection arm. 
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            Once screws are removed, lift the back up and off of the projection arm. 
 
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            Use a plastic opening tool to pry apart the front of the projection arm casing. Start at the top of the projection arm. 
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            Once top is partially open, use a spudger to pry at the side of the projection arm. 
 
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            Turn the clock on its side. Slide the Focus Knob forward with your thumb. 
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            The Focus Knob Component should now be free of Projection Arm. 
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            Hold the Component in one hand and lift the Projection Beam up and away from the Focus Knob. 
 
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            Loosen Focus Knob by turning the Focus Knob counterclockwise with your fingers. 
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            If needed, add a SMALL amount of WD-40 to the base of the knob and continue turning Focus Knob. 
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            Place replacement Focus Knob in socket and turn clockwise to secure. 
 
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To reassemble your device, follow these instructions in reverse order.