This is the Minimoog keyboard assembly.

Notice the irregular key heights and spacing in the heavy traffic area of the keyboard.

This will be fixed during this repair.

Here, we've taken the plastic key caps off all the white keys.  The caps are attached using small, self-tap screws.

Take out the screws, then slide the caps forward to release them from the keys.

We removed all the key caps and gave them a good cleaning.

Notice how a tab on the front of white keys slides into a slot on the underside of the cap.

In this photo, the "D" cap is locked onto the key but the "E" and "C" caps aren't.

When reinstalling a cap, be sure the key's tab sticks through the slot in the cap, as shown here.

You may need to jiggle the cap to coax it onto the key.

If a key and its cap aren't interlocked, their mounting holes won't align, as seen on these white keys. 

When reinstalling a key cap, align the two holes.

Next, we remove all the key springs at the back of the keyboard.

On the Minimoog, blue springs go on the white keys and red springs go on the black keys.

Different synthesizer models use different color assignments.  The Arp Odyssey uses red and blue springs oppositely, for example.

Then, we remove the keys.  They attach to pivot tabs at the back of the keyboard.

Twist the tabs to a 45° angle, as shown here, so they clear the square holes in the keys.

Use pliers to twist the tabs.

Then, lift each key off its pivot tab, slide it forward, and remove it from the keybed.