Introduction
This guide will show you how to remove, clean, and replace the button clusters on the keyboard's front black panel
Tools
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            Pull black panel away from keyboard and place face-up on keys 
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            Remove all screws from circuit panel with Phillips #1 and #2 screwdrivers in order to remove all 18 16mm and 18mm screws. 
 
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            Pull circuit panel away from black panel 
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            Set circuit panel out of the way 
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            Remove/clean button cluster 
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            Reassemble with new/cleaned button cluster 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.