Hold the keyboard open with one hand to extend the three cables (white, black and copper) still connecting the bottom of the keyboard to the back case.

Be sure you are prying up the hinged retaining flap, not the connector itself.

Use your fingernail to flip up the small retaining flap of each zero insertion force connector and then gently pull each ribbon cable out one at a time.

The white line on this ribbon cable marks the edge of the connection area. To reinstall, insert the cable into the connector up to this line and then close the retaining flap. If the cable doesn’t insert easily up to (or very near to) this line, it’s probably misaligned and needs to be gently removed and repositioned.