There are no specific instructions published to replace the keypad membrane on the CO Series locks.
However, the CO993 installation instructions shows how to gain access to the keypad for that model.
This document although not official is an excerpt from the coin cell replacement guide, and includes instructions to gain
access to the keypad for other the CO100 models that are keypad only.
You must remove the reader and cover from baseplate and then swap out the keypad.
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