Lock And Key Systems (PY104.16) Practice Test

Before changing a combination for a secure container, you should ensure the lock is in which position?

Open Locked Half-open Disabled

Correct Answer:

Open

Explanation:

To change a combination, you need access to the lock’s internal change mechanism. That access is only available when the lock is open. In the open position, the bolt is retracted and the internal wheels or pins can be moved to set a new combination. If the lock is closed or locked, the internal components are secured, so you can’t perform the reset. A half-open state still doesn’t expose the change mechanism, so it won’t work for reprogramming. Disabled isn’t a normal state for changing a combination. So, open is the correct position because it provides access to the parts you must adjust to set a new code.

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